Installation and Service Instructions Please file in Service Binder for use by heating contractor Vitotronic 100, Model GC1 Digital boiler control unit Vitocontrol-S, VD2 / VD2A / CT3, CM2 Model 300-K MW1 Outdoor-reset logic digital cascade control VITOTRONIC 100, GC1 VITOCONTROL-S, VD2/CT3/CM2 Certified as a component part of Viessmann boilers only 5351 340 v1.
General information Safety, Installation and Warranty requirements Please ensure that this manual is read and understood before commencing installation. Failure to comply with the issues listed below and details printed in this manual can cause product/property damage, severe personal injury, and/or loss of life. Ensure all requirements below are understood and fulfilled (including detailed information found in manual subsections).
Contents Index Page Product information ........................................................................................................................................................................................................... Heating system designs System versions 1 to 10 .................................................................................................................................................................................................
Contents Index (continued) Service scanning – Vitotronic 100 Service level summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Contents Index (continued) Coding – Vitocontrol-S, VD2/CT3/CM2 Resetting codings to the factory setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163 Coding 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Important Precautions Safety Take note of all symbols and notations intended to draw attention to potential hazards or important product information. These include ”WARNING,” ”CAUTION,” and ”IMPORTANT”. See pages 2 and 7 for details. Approvals Viessmann boilers, burners and controls are approved for sale in North America by CSA International. Codes The installation of this unit shall be in accordance with local codes. In the absence of local codes, use: CSA C22.
Important Precautions / General Information Important regulatory and installation requirements Power supply Install power supply in accordance with the regulations of the authorities having jurisdiction or, in the absence of such requirements, in accordance with National Codes. Viessmann recommends the installation of a disconnect switch to the 120 VAC power supply outside of the boiler room.
General information Summary of system versions Boiler Characteristics Page 1 Vitorond 200, VD2A With Therm-Control and 3-way mixing valve 2 Vitorond 200, VD2 Shunt pump for controlling return temperature for each boiler 10 3 Vitorond 200, VD2 Common supply pump and low-pressure manifold 12 4 Three-way mixing valve for controlling return temperature 15 5 Low loss header and three-way mixing valve for controlling return temperature 17 6 Vitocrossal 300 Several heating circuits and one low
Heating system designs System Version 1 Vitorond 200, VD2A LON LON connection (available connections with terminator) A Heating circuit with mixing valves B DHW tank Plug ! ?Flow ?M2 5351 340 v1.
Heating system designs System version 2 Vitorond 200, VD2 M3 2 20 52 146 3 17B 17A C Plug ! ? T2 146 143 29 T1 52 A1 40 90 T2 146 29 52 A1 143 LON LON 143 LON LON 90 41 40 3 17B 17A A B C D D 2 LON 40 B D LON 1 28 5 21 41 M2 2 20 52 T1 A A Boiler with Vitotronic 100, GC1 Vitocontrol-S, VD2/CT3/CM2 DHW tank Mixing valve circuit sÖM2/M3 Heating circuit pump mixing valve circuit 2 or 3 sA DHW pump sK DHW recirculation pump sL Shunt pump fÖ Power supply, 120 VAC, 60 Hz
Heating system designs System version 2 (continued) Codings must be set on every Vitotronic 100, GC1.
Heating system designs System version 3 Common supply pump and low pressure distribution manifold Vitorond 200, VD2 M2 2 20 52 LON 146 143 52 A1 90 41 T1 A A Boiler with Vitotronic 100, GC1 Vitocontrol-S, VD2/CT3/CM2 DHW tank Mixing valve circuit Outdoor temperature sensor Supply temperature sensor common heating supply ?M2/M3 Supply temperature sensor mixing valve circuit 2 or 3 § Boiler temperature sensor % DHW tank temperature sensor aJA Temperature sensor T1 sÖA1 Closing the mixing valves
Heating system designs System version 3 (continued) Coding must be set on every Vitotronic 100, GC1.
Heating system designs System version 3 (continued) Possible applications If the distribution manifold is located in a remote location (> 20 m / 65 ft). The heat transfer to the heating circuits must be able to be reduced. Temperature sensor T1 reduces or closes the mixing valves if the required minimum return temperature is not achieved. Size the common supply pump to 110% of the total flow rate of the heating system.
Heating system designs System version 4 Controlling the return temperature with a 3-way mixing valve Vitorond 200, VD2 M2 20 52 1 28 5 21 M3 2 20 52 D LON LON 146 143 LON T1 C 146 52 A1 143 29 41 90 40 3 17A 146 143 52 A1 29 41 90 40 3 17A A B C D D 2 LON LON 40 B LON 2 T1 A A Boiler with Vitotronic 100, GC1 Vitocontrol-S, VD2/CT3/CM2 DHW tank Mixing valve circuit Plug ! ? sÖM2/M3 Heating circuit pump mixing valve circuit 2 or 3 sA DHW pump sK DHW recirculation pump
Heating system designs System version 4 (continued) Coding must be set on every Vitotronic 100, GC1.
Heating system designs System version 5 Controlling the return temperature with a low loss header and a three-way mixing valve Vitorond 200, VD2 M2 2 20 52 1 28 5 21 M3 2 20 52 2 D 146 143 LON LON 40 B D LON LON LON LON E C A Boiler with Vitotronic 100, GC1 B Vitocontrol-S, VD2/CT3/CM2 C DHW tank 5351 340 v1.
Heating system designs System version 5 (continued) Coding must be set on every Vitotronic 100, GC1.
Heating system designs System version 6 Heating circuit and one low temperature heating circuit Vitocrossal 300, CT3 M3 2 20 52 146 A A E 143 156 C 52 A1 41 40 90 3 146 143 156 52 A1 90 41 3 40 D 146 143 LON LON LON D 2 LON 40 B LON 1 28 5 21 LON M2 2 20 52 E A Boiler with Vitotronic 100, GC1 B Vitocontrol-S, VD2/CT3/CM2 C DHW tank D Mixing valve circuit E Neutralizing system Plug ! ? sÖM2/M3 Heating circuit pump mixing valve circuit 2 or 3 sA DHW pump sK DHW recirculat
Heating system designs System version 6 (continued) Codings must be set on every Vitotronic 100, GC1.
Heating system designs System version 6 (continued) Possible applications Vitocrossal 300 is operated via a Viessmann boiler control unit with outdoor reset function, modulating boiler water temperature, and load-dependent sequential control – two-stage or modulating burners are controlled. Vitocrossal 300 is equipped with two return connections.
Heating system designs System version 7 Heating circuit and one low temperature heating circuit plus Vitorond with shunt pump Vitocrossal 300, CT3 Vitorond 200, VD2 D D 146 143 LON LON 2 LON LON 40 B LON 1 28 5 21 M3 2 20 52 LON M2 2 20 52 3 17B 17A T2 146 52 A1 143 29 41 90 40 146 143 41 90 40 3 T1 C A A E A Boiler with Vitotronic 100, GC1 B Vitocontrol-S, VD2/CT3/CM2 C DHW tank Plug ! ? sA sK sL fÖ DHW pump DHW recirculation pump Shunt pump Power supply, 120 VAC, 60
Heating system designs System version 7 (continued) Coding must be set on every Vitotronic 100, GC1.
Heating system designs System version 7 (continued) Possible applications The Vitocrossal 300, CT3 (lead boiler) and the Vitorond 200, VD2 (lag boiler) are operated via a Viessmann control system with outoor reset logic, modulating boiler water temperature, and load-dependent sequential control – two-stage or modulating burners are controlled. Vitocrossal 300, CT3 is equipped with two return connections.
Heating system designs System version 8 Three-way mixing valve, several heating circuits and one low temperature heating circuit Vitocrossal 300, CT3 Vitorond 200, VD2 M2 20 52 3 17A 146 143 52 A1 29 41 90 40 146 143 41 90 3 40 D 146 143 LON LON D 2 LON LON 40 B LON 1 28 5 21 M3 2 20 52 LON 2 T1 C A A E A Boiler with Vitotronic 100, GC1 B Vitocontrol-S, VD2/CT3/CM2 C DHW tank D Mixing valve circuit Plug ! ? sL fÖ Boiler circuit pump Power supply,120 VAC, 60 Hz fA Burner
Heating system designs System version 8 (continued) Coding must be set on every Vitotronic 100, GC1.
Heating system designs System version 8 (continued) Vitocontrol-S, VD2/CT3/CM2 Required coding 00: 00: 00: or 00: 3, Without system circuit A1*1 4, 7, 8 35: 1 35: 2 35: 3 Vitocontrol-S, VD2/CT3/CM2 with one Vitotronic 100, GC1 two Vitotronic 100, GC1 three Vitotronic 100, GC1 39: 1 to 39: 4 Setting up Vitocrossal 300 as permanent lead boiler 3b: 3 Autonomous series connection with supply temperature sensor *1 If required.
Heating system designs System version 9 Heating circuit and one low temperature heating circuit Vitocrossal 200, CM2 A Boiler with Vitotronic 100, GC1 B Vitocontrol-S, VD2/CT3/CM2 C DHW tank D Mixing valve circuit E Neutralizing system Plug ! ? sÖM2/M3 Heating circuit pump mixing valve circuit 2 or 3 sA DHW pump sK DHW recirculation pump fÖ Power supply, 120 VAC 60 Hz fA Burner (burner stage 1) gSA1 Motorized isolation valve gSM2/M3 Mixing valve actuator circuit 2 or 3 aVD/aVH External connections (see
Heating system designs System version 9 (continued) Codings must be set on every Vitotronic 100, GC1.
Heating system designs System version 9 (continued) Possible applications Vitocrossal 200 is operated via a Viessmann boiler control unit with outdoor reset function, modulating boiler water temperature, and load-dependent sequential control – two-stage or modulating burners are controlled. Due to the LON-BUS communication between controls, a boiler supply temperature is automatically set. This temperature is based on the highest required mixing valve circuit temperature plus adjustable differential.
Heating system designs System version 10 Heating circuit and one low temperature heating circuit plus Vitorond with shunt pump Vitocrossal 200, CM2 Vitorond 200, VD2 A Boiler with Vitotronic 100, GC1 B Vitocontrol-S, VD2/CT3/CM2 C DHW tank Plug ! ? sA sK sL fÖ DHW pump DHW recirculation pump Shunt pump Power supply, 120 VAC, 60 Hz fA Burner (burner stage 1) gSA1 Motorized isolation valve gSM2/M3 Mixing valve actuator circuit 2 or 3 lÖ Burner (burner stage 2 / mod.
Heating system designs System version 10 (continued) Coding must be set on every Vitotronic 100, GC1.
Heating system designs System version 10 (continued) Possible applications The Vitocrossal 200, CM2 (lead boiler) and the Vitorond 200, VD2 (lag boiler) are operated via a Viessmann control system with outoor reset logic, modulating boiler water temperature, and load-dependent sequential control – two-stage or modulating burners are controlled. Return temperature control for Vitorond can be achieved using the shunt pump and by closing the isolation valve.
Installation – Vitotronic 100, GC1 Summary of electrical connections 145 17 B 17 A 5 3/2 15 143 146 151 21 52 A1/M1 20 A1/M1 29 50 40 90 41 150 156 156 Low voltage connections (motherboard) Line voltage connections (motherboard) § % aG sÖA1 Switched output sA No function sL Shunt pump (on site) or boiler circuit pump (on site) fÖ Power connection fA Burner (burner stage 1) gÖ Central fault message gSA1 Isolation valve or actuator for three-way mixing valve for return temperature control lÖ aBÖ
Installation Overview of Electrical Connections (VD2/VD2A/CT3 only) (continued) 5351 340 v1.
Installation 5351 340 v1.
Installation – Vitotronic 100, GC1 Inserting cables and applying strain relief Run the cables from the connection enclosure into the control unit. Apply strain relief to cables (see below). Cables with moulded strain relief clamp Connect cable and strain relief clamp. OR 5351 340 v1.4 Fasten cable to the cable lead with cable tie.
Installation – Vitotronic 100, GC1 Inserting the boiler coding card Only use the boiler coding card included with the boiler. Boiler Coding card Part no. Vitocrossal 300, type CT3 1040 7820 144 Vitorond 200, VD2 / VD2A 1020 7820 142 Vitocrossal 200, CM2 1041 7820 145 5351 340 v1.4 Insert the boiler coding card through the cut-out in the cover into slot X7.
Installation – Vitotronic 100, GC1 Setting of the fixed high limit (if required) Settings on the control unit The setting for the fixed high limit and the other settings are dependent in the safety equipment installed in accordance with applicable codes. A The fixed high limit is supplied with a factory setting of 110°C / 230°F. - On Vitotronic 100, GC1 for Vitorond 200, VD2 of 110°C / 230°F Adjustment to 99°C / 210°F - On Vitotronic 100, GC1 for Vitocrossal 300, CT3 of 99°C / 210°F - No adjustment 3.
Installation Setting of the Adjustable High Limit (if required) The adjustable high limit is supplied with a factory setting of 95°C / 203°F Adjustment to 100°C / 212°F 1. Disconnect power to control and burner. A 2. Using a suitable screwdriver, lever out and remove the selector knob ”R” behind the hinged cover. 3. 3. Using a pair of pointed pliers, break off the cams identified by the shaded areas in the Fig. from the stop dial. A 2. 75 to 1100°C 167 to 212°F 4.
Installation – Vitotronic 100, GC1 Sensor connection 17B 17A 3 15 1 2 3 1 2 3 1 2 3 1 2 3 A B C D 5351 340 v1.
Installation – Vitotronic 100, GC1 Connection of the boiler temperature sensor The sensor measures the boiler water temperature of the boiler. The boiler temperature sensor is installed at the same time as the boiler insulation. 3 Check the sensor 1. Disconnect plug § in the terminal compartment of the boiler control. 2. Measure resistance of sensor at terminals ”1” and ”2” of the plug. Boiler water temperature in °C / °F Resistance in Ω 40 / 104 50 / 122 60 / 140 578 597 616 3.
Installation – Vitotronic 100, GC1 Connection of the return temperature sensor Strap-on temperature sensor and immersion temperature sensor For measuring the supply and return temperature. 17A or 17B Electrical connection The sensor is inserted in socket ”17A” or ”17B” on the control unit. Check the sensor 1. Disconnect plug aJA or aJB in the terminal compartment. 2. Measure resistance of sensor at terminals ”1” and ”2” of the plug.
Installation – Vitotronic 100, GC1 Connection of the flue gas temperature sensor (VD2/VD2A/CT3 only) The sensor measures the flue gas temperature and monitors the selected limit value. Electrical connection The sensor is inserted in socket ”15” on the control unit. Check flue gas temperature sensor 1. Disconnect plug aG in the terminal compartment. 2. Measure resistance of sensor at terminals ”1” and ”2” of the plug.
Installation Connection of the Pumps (VD2/VD2A/CT3 only) Available pump connections sÖ Switched contact Terminals 5 - L, - G , - N sL Shunt pump, boiler circuit pump Terminals 6 - L, - G, - N. Install pumps: see manufacturer’s instructions. 120 VAC pumps 240 VAC or 3 PH pumps Note: The maximum power consumption of all pumps is 4A . Rated current: max. 2 FLA Recommended connection cable: AWG 14 Please note: Use contactor and/or motor starter to power pump.
Installation Connection of the Pumps (CM2 only) Available pump connections sÖ Switched contact Terminals 7 - L, - G , - N sL Shunt pump, boiler circuit pump Terminals 8 - L, - G, - N. Install pumps: see manufacturer’s instructions. 120 VAC pumps 240 VAC or 3 PH pumps Note: The maximum power consumption of all pumps is 4A . Rated current: max. 2 FLA Recommended connection cable: AWG 14 Please note: Use contactor and/or motor starter to power pump. For activating the contactor: Rated current: max.
Installation Connection of Boiler Return Mixing Valve or Isolation/Modulating Valve actuator (VD2/VD2A/CT3 only) 1 120V or 24V Valve Adaptor 1 120V Valve Adaptor 1 24V Valve Adaptor 2 DIN rail in connection enclosure 2 120V valve actuator 2 24V valve actuator 3 aBH Terminals 120V Valve Adaptor Rated voltage: 120 VAC Rated current: max. 0.1 FLA Recommended connection wire size: AWG 14 Part No. 7134 560 24V Valve Adaptor Rated voltage: 24 VAC Rated current: max. 0.
Installation Connection of Boiler Return Mixing Valve or Isolation/Modulating Valve actuator (CM2 only) 10 11 12 1 120V or 24V Valve Adaptor 1 120V Valve Adaptor 1 24V Valve Adaptor 2 Junction box 2 120V valve actuator 2 24V valve actuator 3 120V L out power supply 120V Valve Adaptor Rated voltage: 120 VAC Rated current: max. 0.1 FLA Recommended connection wire size: AWG 14 Part No. 7511367 24V Valve Adaptor Rated voltage: 24 VAC Rated current: max. 0.
Installation Making Space for Accessory Adaptors on the DIN Rail (CM2 only) 1. Push up on the bottom front of the DIN rail clamp to remove and set aside. 2. Using a flat head screwdriver, remove the 4 ’spare’ DIN terminals 23, 24, 25 and 26 one at a time. Place the screwdriver between the rail and the base of the terminal and turn the screwdriver clockwise . Discard the removed terminals. 3.
Installation Vitotronic 100, GC1 with 30% LTP Package (VD2/VD2A only) 50 5351 340 v1.
Installation – Vitotronic 100, GC1 Connection of external controls A B C 143 A Boiler disable B Activate boiler as last in the boiler sequence C External changeover between staged/modulating burner 146 A Boiler disable Connect dry contact at terminals “1” and “2” of the plug aVD. Contact closed: The boiler burner is disabled. It is taken out of the boiler sequence, i.e. isolation valve/return valve are closed. The shunt pump/boiler circuit pump are switched off.
Installation Connection of Low Water Cut-off Device (VD2/VD2A/CT3 only) 1. Remove jumper between terminals 12 and 15. 2. Make connection as shown in diagram. CAUTION Please note that the diagram at left is only a simplified conceptual drawing of a typical low water cut-off (LWCO) device. Refer to the manual specific to the device for interconnection details. aBH Power supply for accessories. 5351 340 v1.4 aBÖ Connection for external equipment.
Installation Connection of Low Water Cut-off Device (CM2 only) 1. Remove jumper between terminals 21 and 22. 2. Make connection as shown in diagram. CAUTION 5351 340 v1.4 Please note that the diagram shown is only a simplified conceptual drawing of a typical low water cut-off (LWCO) device. Refer to the manual specific to the device for interconnection details.
Installation Connection of Combustion Air Device (VD2/VD2A/CT3 only) Connection of the Combustion Air Device Adaptor 1. Disconnect power to control and burners. 2. Install Combustion Air Device Adaptor, Part No. 7134 563 on DIN Rail inside connection enclosure (refer to installation manual of Combustion Air Device Adaptor). 3. Remove jumper between terminals 16 and 17. 4. Make connection as shown in the diagram. IMPORTANT Wire BK2 must be connected to terminal 16 and BK3 to terminal 17 DO NOT reverse.
Installation Connection of Combustion Air Device (CM2 only) Connection of the Combustion Air Device Adaptor Connection of the combustion air blower to adaptor 1. Disconnect power to control and burners. Rated voltage: 120 VAC Rating current: max 5 FLA Recommended connection wire size: AWG 14 2. Install Combustion Air Device Adaptor, Part No. 7134 563 on DIN Rail inside the boiler junction box (refer to installation manual of Combustion Air Device Adaptor). D 3.
Installation – Vitotronic 100, GC1 Connection of combustion air devices (continued) Connection of the combustion air damper See damper manual for correct installation. Ensure that the combustion air damper is suitable for this application. E 1. Disconnect power to control and burner. 2. Make connection as shown in the diagram.
Installation – Vitotronic 100, GC1 Connection of single combustion air devices on mulitple boiler system If a single combustion air device is required for a multiple boiler system, a Common Combustion Air Interface must be installed. Rated voltage: 120 VAC Rating current: max 5 FLA Recommended connection wire size: AWG 14 1. Install Combustion Air Device Adaptor on each boiler. Part No. 7134 563 2. Install Common Combustion Air Device Interface, Part No. 7134 604 as per supplied manual. 3.
Installation – Vitotronic 100, GC1 Connection of single combustion air devices on mulitple boiler system Connection of the combustion air blower A Common Combustion Air Device Interface B Combustion air device motor 120VAC, 5 FLA max. C Proving switch rated for 120 VAC D Power supply, 120 VAC ¨Safety instruction! Provide disconnect means and overcurrent protection as required by local codes. D See blower manual for current rating to correctly select the fuse.
Installation – Vitotronic 100, GC1 Connection of single combustion air damper Connection of the combustion air damper A Common Combustion Air Device Interface B Combustion Air Device Motor 120VAC, 5 FLA max. C Proving switch rated for 120 VAC D Power supply, 120 VAC ¨ Safety instruction! Provide disconnect means and overcurrent protection as required by local codes. D See damper manual for current rating to correctly select the fuse.
Installation – Vitotronic 100, GC1 Connection of the compiled failure alarm (VD2/VD2A/CT3 only) Rated voltage: 120 VAC 60 Hz Rated current: max. 2 FLA Recommended connection wire size: AWG 14 A 1. Disconnect power to control and burner. 2. Connect the compiled failure alarm as shown in the diagram.
Installation – Vitotronic 100, GC1 Plugging in the LON communication module Plug in the LON communication module in accordance with the illustration in the control unit. Making the LON connection 5351 340 v1.4 See page 71.
Installation – Vitotronic 100, GC1 Burner connection, burner control wiring (VD2/VD2A/CT3 only) For burners with plug-in connection A The burner cables are included in the standard delivery of the Vitotronic. Connect the burner in accordance with applicable codes.
Installation – Vitotronic 100, GC1 Burner connection, burner control wiring (VD2/VD2A/CT3 only) (continued) CAUTION This is a generic connection drawing only! Follow the burner manufacturer’s connection drawings for Viessmann controls. Write the terminal numbers or markings on the drawing for future reference. a b 5351 340 v1.4 Burner power supply not shown.
Installation Burner Connection, Burner Control Wiring (VD2/VD2A/CT3 only) (continued) Burner motor power supply connection (continued) For burners with 240 VAC, 1PH power supply and connection in conduit. See burner manual for correct fuse and wire gauge sizing, and specific connections for Viessmann controls. 1.Disconnect power to burner and boiler control. 2.Connect 240 VAC power to the terminals 21, 22 and 23 on the DIN rail inside the connection enclosure.
Installation Burner Connection, Burner Control Wiring (VD2/VD2A/CT3 only) (continued) Burner motor power supply connection (continued) For burners with 3PH 208, 460 or 575V power supply. See burner manual for correct fuse and wire gauge sizing, and specific connections for Viessmann controls. 1.Disconnect power to burner and boiler control. 2.Connect 3PH power to the terminals 21, 22, 23 and 24 on the DIN rail inside the connection enclosure. Provide fuseable disconnect means according to local codes. 3.
Installation Power Supply Connection, Boiler Control (VD2/VD2A/CT3 only) Legend L: Line N: Neutral G: Ground A Power supply 120 VAC, 1 PH . Provide disconnect means and overcurrent protection as per local codes B Terminals [40] C Connection enclosure 1. Ensure that the main power supply to the control contains overcurrent protection with a maximum rating of 15 A and 2 pole disconnect. CAUTION The control must be grounded. Ensure that “L”, “N” and “G” are not interchanged. 5351 340 v1.4 2.
Installation Burner Connection, Burner Control Wiring (CM2 only) For burners with plug-in connection A The burner cables are included in the standard delivery of the Vitotronic. Connect the burner in accordance with applicable codes. ATo boiler control unit BTo burner interface 1.Disconnect power to burner and boiler control. Terminal codes 2. Connect plugs fA and plug lÖ to respective counter plugs in boiler control unit.
Installation – Vitotronic 100, GC1 Installing the control unit front (VD2/VD2A/CT3 only) 1. 7. 8. 1. Position the front part of the housing and clip hinges to counter-parts on main housing. 2. Release the stay bar, open it up and lock in position at point A. 6. 3. Insert the flat cable from the Optolink into plug ”X20”. 4. Insert the plug of the programming unit into plug ”X10”. Use cable guides in cover for routing. 5. Engage the stay bar in the front housing. 6. Close the front of the housing. 7.
Installation – Vitotronic 100, GC1 Opening the control unit (VD2/VD2A/CT3 only) 1. Remove the cover of the connection enclosure. 2. 2. Unscrew the screws from the front housing. 3. Swing up the front part of the control housing. 4. Position the stay bar so that it supports the front housing. 1. 3. 5351 340 v1.4 4.
Installation Control and Junction Box Installation Instructions (for CM2 only) 1. Route cables and capillaries from control through the opening in the control panel. Guide the cables to the junction box through the opening in the rear panel and along the top rail to the control. Secure all cables to the rail with cable ties. Insert capillaries into the sensor well. Note: Never allow cables to come in contact with hot metal components. WARNING Do not bend or kink the capillaries.
Installation Mounting the Front Part of the Control Unit (CM2 only) 1. Position the front part of the housing and clip hinges to counter-parts on main housing. 2. Release the stay bar, open it up and lock in position at point A. A 3. Insert the flat cable from the Optolink into plug ”X20”. 4. Insert the plug of the programming unit into socket ”X10”. Use cable guides in cover for routing. 5. Engage the stay bar in the front housing. 6. Close the front of the housing. 7.
Installation Opening the Control Unit (CM2 only) 1. Remove the control cosmetic cover . 2. Unscrew the screws from the front housing. 3. Swing up the front part of the control housing. 5351 340 v1.4 4. Position the stay bar so that it supports the front housing.
Installation – Vitocontrol-S, VD2/CT3/CM2 Summary of electrical connections LON 52 M3 52 M2 20 M3 20 M2 2 M3 2 M2 145 145 1 17 B 17 A 5 28 2/3 21 52 A1 143 20 A1 146 29 50 40 156 5351 340 v1.
Installation – Vitocontrol-S, VD2/CT3/CM2 Summary of electrical connections (continued) 5351 340 v1.
Installation – Vitocontrol-S, VD2/CT3/CM2 Mounting of the control unit 1.Fasten metal backplate onto mounting surface with four fasteners. 1. 2.Position midplate between backplate and connection enclosure. 2. 3. 3.Install midplate and connection enclosure onto backplate. 4.Fasten connection enclosure and midplate onto backplate with two fasteners. 5.Install control rear section onto connection enclosure housing. Hook control onto backplate tabs and pivot downwards. 4. 6.
Installation – Vitocontrol-S, VD2/CT3/CM2 Inserting cables and applying strain relief Run the cables from the connection enclosure into the control unit. Apply strain relief to cables (see below). Cables with moulded strain relief clamp Connect cable and strain relief clamp. OR 5351 340 v1.4 Fasten cable to the cable lead with cable tie.
Installation – Vitocontrol-S, VD2/CT3/CM2 Sensor connection 1 17B 17A 5 2 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 A B C AOutdoor temperature sensor (not polarity sensitive) BReturn temperature sensor T2 D E CTemperature sensor T1 DDHW tank temperature sensor ESupply temperature sensor – common heating supply Installation location: North or north-western wall. In multi-storey buildings, in the upper half of the second floor. Not above windows, doors or ventilation outlets.
Installation – Vitocontrol-S, VD2/CT3/CM2 Sensor connection (continued) Outdoor temperature sensor The outdoor temperature sensor should be mounted 2 to 2.5m / 6.5 to 8 ft above ground level on the north or north-west facing wall of the building. In the case of multi-storey buildings, it should be mounted in the upper half of the second storey. Make sure that the sensor is not located over windows, doors and air vents, nor immediately beneath a balcony or guttering.
Installation – Vitocontrol-S, VD2/CT3/CM2 Sensor connection (continued) Strap-on temperature sensor and immersion temperature sensor For measuring the supply temperature. Electrical connection The sensor is inserted in socket ? on the control unit. 2 Check the sensor 1. Disconnect plug ? in the terminal compartment. 2. Measure resistance of sensor at terminal ”2” of the plug. Flow/return temperature in °C / °F Resistance in Ω 30 / 86 40 / 104 60 / 140 569 592 643 3.
Installation – Vitocontrol-S, VD2/CT3/CM2 Sensor connection (continued) Strap-on temperature sensor and immersion temperature sensor For measuring the return temperature. 17A or 17B Electrical connection The sensor is inserted in socket ”17A” or ”17B” on the control unit. Check the sensor 1. Disconnect plug aJA or aJB in the terminal compartment. 2. Measure resistance of sensor at terminals ”1” and ”2” of the plug.
Installation – Vitocontrol-S, VD2/CT3/CM2 Sensor connection (continued) DHW tank temperature sensor The sensor measures the domestic hot water tank temperature. 5 Heating systems with domestic hot water heating (single-boiler systems only) Check the sensor 1. Disconnect plug % in the terminal compartment of the boiler control. 1. Install the DHW tank temperature sensor. 2. Measure resistance of sensor at terminals ”1” and ”2” of the plug.
Installation – Vitocontrol-S, VD2/CT3/CM2 Connection of the pumps Available pump connections sA DHW pump for heating up the domestic hot water tank Terminals 4 - L, - G , - N A sL Shunt pump, boiler circuit pump Terminals 6 - L, - G, - N. .. Install pumps: see manufacturer’s instructions. B 240 VAC or 3 PH pumps 120 VAC pumps Please note: The maximum power consumption of all pumps is 4A . Rated current: max.
Installation – Vitocontrol-S, VD2/CT3/CM2 Connection of modulating valve actuators Control unit 1 120V or 24V valve adaptor 1 120V valve adaptor 1 24V valve adaptor 2 DIN rail in connection enclosure 2 120V valve actuator 2 24V valve actuator 3 aBH Terminals 1. Disconnect power to control. 120V Valve Adaptor Rated voltage: 120 VAC Rated current: max. 0.1 FLA Recommended connection wire size: AWG 14 Part No. 7134 560 2. Install 120V or 24V valve adaptor on DIN rail inside connection enclosure.
Installation – Vitocontrol-S, VD2/CT3/CM2 Connection of external contacts A B C 143 A External heating program changeover or mixing valve “open” Contact closed: The manually pre-selected heating program can be changed via this contact, (see table below) enabling the mixing valves to be opened. ¨Heating circuits are no longer frost protected during mixing valve closed. A minimum boiler return temperature is not maintained during external disabling.
Installation – Vitocontrol-S, VD2/CT3/CM2 Connection of the compiled failure alarm A Rated voltage: 120 VAC 60 Hz Rated current: max. 2 FLA Recommended connection wire size: AWG 14 1. Disconnect power to control and burner. 2. Connect the compiled failure alarm as shown in the diagram. A Connect terminal strip in connection enclosure of boiler control B Visual and/or audible alarm device (120 VAC) 5351 340 v1.
Installation – Vitocontrol-S, VD2/CT3/CM2 Making the LON connection The Viessmann LON system is designed for the Line BUS topology with end of line resistors on both ends. Connection with Viessmann LON cable A A C A 7 m / 23 ft 7 m / 23 ft B C B A Control unit or Vitocom B LON cable, Part No. 7143 495 C End of line resistor (standard delivery of Vitocontrol-S, VD2/CT3/CM2) Part No.
Installation – Vitocontrol-S, VD2/CT3/CM2 Making the LON connection (continued) Connection with Viessmann LON cable, On-site cable for extensions up to 900 m / 3000 ft. A C A E E 7 m / 23 ft A E 7 m / 23 ft B B E 7 m / 23 ft 7 m / 23 ft B F C B D max. 900 m / 3000 ft. A Control unit or Vitocom B LON cable, Part No.
Installation – Vitocontrol-S, VD2/CT3/CM2 Installing the control unit front 1. 7. 1. Position the front part of the housing and clip hinges to counter-parts on main housing. 2. Release the stay bar, open it up and lock in position. 3. Insert the flat cable from the Optolink into plug ”X20”. 4. Insert the plug of the programming unit into plug ”X10”. Use cable guides in cover for routing. 8. 5. Engage the stay bar in the front housing. 6. Close the front of the housing. 6. 7.
Installation – Vitocontrol-S, VD2/CT3/CM2 Opening the control unit 1. Remove the cover of the connection enclosure. 2. 2. Unscrew the screws from the front housing. 3. Swing up the front part of the control housing. 4. Position the stay bar so that it supports the front housing. 1. 3. 5351 340 v1.4 4.
Initial start-up Steps .................................................................................................................................................................................................................................................. . 1. Checking the heating circuit allocation (Vitocontrol-S, VD2/CT3/CM2) Page .... . .......................................................................................... 91 2.
Initial start-up Further step-by-step instructions Checking the heating circuit allocation (Vitocontrol-S, VD2/CT3/CM2) 1 2 3 Boiler temperature 61 Check whether the label for heating circuit allocation has been affixed to the corresponding field of the programming unit. Press the corresponding button before commencing any adjustments. Changing the display language selection (Vitocontrol-S, VD2/CT3/CM2) 1. Press 1 2 3 . 3. Confirm with . Outside temperature 12 2.
Initial start-up Further step-by-step instructions (continued) Connecting control units to the LON system The LON communication module must be plugged in (see page 44). Please note: Data transfer via the LON system can take several minutes. Vitotronic 100, GC1 1. Setting the system type Set coding 1 to 01: 2. Coding 1, see page 154. 2. Setting the boiler number In coding 1, set the boiler number via coding address “07”. 3.
Initial start-up Further step-by-step instructions (continued) Example of a multi-boiler system Vitotronic 100 Vitotronic 100 LON Vitocontrol-S LON LON Multi boiler systems with cascade control via LON-BUS Set coding 01: 2 Multi boiler systems with cascade control via LON-BUS Set coding 0:2 Participant no. 1 Coding 77: 1 Participant no. 2 Set coding 77: 2 Boiler number 1 Coding 07: 1 Boiler number 2 Set coding 07: 2 –– Viessmann system number Coding 98: 1 Participant no.
Initial start-up Further step-by-step instructions (continued) Carrying out a participant check (Vitocontrol-S, VD2/CT3/CM2) The communication with the system devices connected to the fault manager is tested with a participant check. Preconditions: The control unit must be encoded as fault manager (coding 79: 1). The LON participant number must be encoded in all control units (see page 92). The fault manager participant list must be up to date (see page 92). Participant Check 1.
Initial start-up Further step-by-step instructions (continued) Matching coding addresses to respective system version Vitotronic 100 In coding 1, set the following coding addresses: 01 Multi-boiler system 02 Burner type 03 Oil or gas operation 07 Boiler number In coding 2, set the following coding addresses: 0C Return temperature control 0d Therm-Control 4C Function plug sÖ 4d Function plug sL 4E Function plug gS 77 LON participant number 98 Viessmann system number 9C LON participant monitoring Vitocontr
Initial start-up Further step-by-step instructions (continued) Matching the control unit to a two stage burner (Vitotronic 100, GC1) 1. Start up the burner. 2. Set the override switch to . 3. Determine the maximum burner output through the fuel consumption. Record the relevant value. 4. Set the override switch to a. 5. Press 9 and simultaneously for approx. two seconds. Relay test is activated. 6. Activate the burner stage 1 ON function with (display shows: 4). 7.
Initial start-up Further step-by-step instructions (continued) Matching the control unit to a modulating burner (Vitotronic 100, GC1) Please note: The burner must be fully adjusted. To achieve a wide modulating range, set the minimum output as low as possible (observe the chimney and flue gas system). 1. Start up the burner. 2. Set the override switch to . 3. Wait until the burner actuator is set to maximum output. 4. Determine the maximum burner output through the fuel consumption.
Initial start-up Further step-by-step instructions (continued) Checking outputs (actuators) and sensors Vitotronic 100 Relay test 1234567 1. Press 9 and simultaneously for approx. two seconds. 3. Press . 2. Select the relay outputs with or .
Initial start-up Further step-by-step instructions (continued) Vitocontrol-S, VD2/CT3/CM2 Relay test 1 2 Relay test 1. Press 9 and simultaneously for approx. two seconds. 3. Press . 3 2. Select the relay outputs with or . The following relay outputs may be selected: Output 20 ON Output 29 ON Output 52 open Output 52 ntr.
Initial start-up Further step-by-step instructions (continued) Adjusting the heating curve (Vitocontrol-S, VD2/CT3/CM2) The heating curves illustrate the relationship between the outdoor temperature and the boiler water or the supply temperature. To put it simply: the lower the outdoor temperature, the higher the boiler water or supply temperature. The room temperature again depends on the boiler water or the supply temperature. Factory default settings: Slope: = 1.
Initial start-up Further step-by-step instructions (continued) Changing slope and shift (for every heating circuit separately) 1. Call up slope with , adjustable value 0.2 to 3.5; call up shift with ; adjustable value –13 to +40°C / 8.6 to 104°F. 1 Slope 2 3 2. Change the value with 3. Confirm the set value with or . . 3.5 Supply temperature in °C / °F 110 230 B 1.4 A 0.2 +20 / 68 -20 / -4 Outdoor temperature in °C / °F 5351 340 v1.
Initial start-up Further step-by-step instructions (continued) Adjusting the normal room temperature (for every heating circuit separately) Normal room temperature: Select the normal day temperature with the set value adjuster. 1 2 3 Standard room temp. 20 Reduced room temperature: 1. Call up the reduced night temperature with tm. 1 2 3 Reduced room temp. 14 The value will be automatically transferred after approx. 2 seconds. 2. Change the value with 3. Confirm the set value with or . .
Service scanning – Vitotronic 100, GC1 Service level summary Function Entry Relay test Press the 9 and “OK” Press the “OK” button buttons simultaneously for approx. 2 seconds 98 Temperatures, boiler coding card and quick scans Press the 9 and rw Press the “OK” button buttons simultaneously for approx.
Service scanning – Vitotronic 100, GC1 Temperatures, boiler coding card and quick scans 1234567 1. Press 9 and rw simultaneously for approx. two seconds. 3. Press . 2. Select the required scan with or .
Service scanning – Vitotronic 100, GC1 Temperatures, boiler coding card and quick scans (continued) Scans F8 F8 8 8 0 N/A LON participant number Software version – communication co-processor 1 N/A Subnet address/system number Node address 2 N/A Number of LON participants Software version – LON communication module 4 N/A N/A System design 1 or 2; Software version – Display according to the programming unit coded system, see page 156 b N/A N/A Burner 0 = OFF 1 = Stage 1/basic load 2 =
Service scanning – Vitotronic 100, GC1 Scanning operating conditions 1. Press . 3. Press . 1234567 2. Select the required operating condition scan with or .
Service scanning – Vitotronic 100, GC1 Scanning and resetting maintenance displays After limits have been reached, which were set up via coding addresses “1F”, “21” and “23” (see page 159), the programming unit display flashes one of the following messages. Please note: Set coding 24: 1 and then coding 24: 0, if maintenance is implemented before a maintenance message is displayed; the set maintenance parameters for run hours and periods are then reset to 0. 12 3 4 5 67 Display indication Explanation 1.
Service scans – Vitocontrol-S, VD2/CT3/CM2 Service level summary Function Entry Exit Page Adjusting display contrast Press the “OK” and “+” buttons simultaneously; the display will darken –– –– Press the “OK” and “-” buttons simultaneously; the display will get lighter –– –– Participant check Press the w and “OK” buttons simultaneously for approx. 2 seconds Press the w and “OK” buttons simultaneously for approx. 1 sec 94 Relay test Press the 9 and “OK” buttons simultaneously for approx.
Service scans – Vitocontrol-S, VD2/CT3/CM2 Temperatures and quick scans 1 2 3 Outside temp. adj. -5 1. Press 9 and rw simultaneously for approx. 2 seconds. 2. Select the required scan with or . 3. Press The following values can be scanned subject to the actual equipment level: Slope, shift A1, M2, M3 Outdoor temperature dampened Actual outdoor temperature Boiler sequence Actual % output boiler 1 to 4 Output red. % Integral Actual boiler temp.
8 8 8 8 8 Scan 1 Display acc. to system designs (ssee coding address 00) N/A Number of KM BUS participants N/A N/A 2 Software version control unit Software version programming unit Software version mixing valve extension M2 Printed Circuit Board N/A Software version mixing valve extension M3 Printed Circuit Board Software version Plug-in adaptor for ext. safety equipment 3 Operating mode sys.
Service scans – Vitocontrol-S, VD2/CT3/CM2 Scanning operating conditions 1. Press 1 2 3 . Outside temperature 12 2. Select the required scan with or . 3. Press . The following values can be scanned subject to the actual equipment level: Participant number Holiday program with departure and return date Holiday program active Outdoor temperature Boiler sequence Common supply temperature Boiler temp.
Service scans – Vitocontrol-S, VD2/CT3/CM2 Scanning and resetting maintenance display Vitocontrol-S, VD2/CT3/CM2 displays a maintenance message if: Vitocontrol-S, VD2/CT3/CM2 has been encoded as fault manager (coding 79: 1) and a maintenance message is displayed at a connected Vitotronic 100, GC1. 1 2 1. Press . Maintenance 3 2. Scan maintenance messages with or . 3. Press . Display reads Acknowledge: Yes Confirm with . The maintenance message in the display is cleared.
Troubleshooting – Vitotronic 100, GC1 Faults displayed at the programming unit 1234567 A Call up further fault codes with or . A fault can be acknowledged . The fault message in the with display will be hidden, but red fault lamp A continues to flash. A central fault messaging device connected to plug gÖ will be switched OFF. The fault message will be re-displayed if an acknowledged fault message has not been removed by the following morning. Calling up acknowledged fault messages Press for approx.
Troubleshooting – Vitotronic 100, GC1 Faults displayed at the programming unit (continued) Fault code System characteristics Cause Remedy 0f Control mode Maintenance 0F is only displayed in the error history Carry out maintenance Please note: After maintenance, set coding 24: 0.
Troubleshooting – Vitotronic 100, GC1 Faults displayed at the programming unit (continued) Fault code System characteristics Cause Remedy b8 Control mode Flue gas temperature sensor open circuit Check flue gas temperature sensor Incorrect LON communication module Replace communication module (see page 136) bf c1 Boiler cools down External safety device Check connection on plug aBÖ and external safety equipment c4 Control mode Input Module 0 to 10V incorrectly connected Connect Input Module
Troubleshooting – Vitotronic 100, GC1 Viewing fault codes from the fault memory (error history) 1. Press rw and simultaneously for approx. 2 seconds. 1234567 2. Call up the individual fault codes with or . Order of fault codes occurred 1 .. . 10 Fault code Last fault code .. . 10th last fault code All saved fault codes can be deleted with D. 3. Press . Faults displayed at the programming unit 1 2 Fault Fr 57 Red fault indicator A flashes for all faults.
Troubleshooting – Vitocontrol-S, VD2/CT3/CM2 Faults displayed at the programming unit (continued) Fault display in plain text Ext. fault Outdoor temperature sensor Supply sensor Boiler 1 to 4 DHW tank sensor (1 or 2; display only, if a second DHW tank temperature sensor is connected) Return sensor Sensor 17A Sensor 17B Room temperature sensor Flue gas sensor Collector sensor Solar DHW sensor Participant No.
Troubleshooting – Vitocontrol-S, VD2/CT3/CM2 Faults displayed at the programming unit (continued) Fault code System characteristics 4c Cause Remedy Open circuit Supply temperature sensor of mixing valve circuit M3 50 DHW tank heating pump ON: Short circuit Set boiler temperature = set DHW DHW tank temperature sensor 1 tank temperature, priority is cancelled or With DHW tank heating system: DHW tank heating is started and stopped by DHW tank temperature sensor 2 Check DHW tank temperature sensor (se
Troubleshooting – Vitocontrol-S, VD2/CT3/CM2 Faults displayed at the programming unit (continued) Fault code System characteristics Cause Remedy 92 Control mode Only solar control unit fault codes will be displayed Short circuit Collector temperature sensor Check solar control unit sensor 93 Short circuit Collector return temperature sensor 94 Short circuit DHW tank temperature sensor 9a Open circuit Collector temperature sensor 9b Open circuit Collector return temperature sensor 9c Open c
Troubleshooting – Vitocontrol-S, VD2/CT3/CM2 Faults displayed at the programming unit (continued) Fault code System characteristics Cause Remedy bc Control mode without remote control Communication error Vitotrol remote control, System circuit A1 Check connections, cable, coding address “A0” and remote control DIP switches bd Communication error Vitotrol remote control, Mixing valve circuit M2 be Communication error Vitotrol remote control, Mixing valve circuit M3 bf Incorrect LON communicatio
Troubleshooting – Vitocontrol-S, VD2/CT3/CM2 Faults displayed at the programming unit (continued) Fault code System characteristics Cause Remedy da Control mode without room influence Short circuit Room temperature sensor, System circuit A1 Check room temperature sensor and DIP switch on Vitotrol (see page 146 and 148) db Short circuit Room temperature sensor, Mixing valve circuit M2 dc Short circuit Room temperature sensor, Mixing valve circuit M3 dd Open circuit Room temperature sensor, Syst
Troubleshooting – Vitocontrol-S, VD2/CT3/CM2 Viewing fault codes from the fault memory (error history) 1 2 3 Error history 1 18 1. Press rw and simultaneously for approx. 2 seconds. 2. Call up the individual fault codes with or . Order of fault codes occurred 1 .. . Error history F11 18 10 Fault code Last fault code .. . 10th last fault code All saved fault codes can be deleted with D. Error history . d5 5351 340 v1.4 F101 3.
Function description – Vitotronic 100 Boiler temperature control Brief description The boiler water temperature is regulated by controlling a two stage or modulating burner. The set boiler water temperature set-point is controlled by Vitocontrol-S, VD2/CT3/CM2. Coding addresses which influence the boiler temperature control 02 to 06, 08 to 0b, 13 to 1C. For a description, see the coding overview.
Function description – Vitocontrol-S, VD2/CT3/CM2 Cascade control unit Brief description The supply temperature is regulated by starting or stopping the burner or by starting/stopping individual burner stages. Depending on the type of control: The boilers will be controlled to the set boiler water temperature determined by the cascade control (stand-alone type of control) or The cascade controls the boilers by pre-setting an individual boiler output (sequential control strategy).
Function description – Vitocontrol-S, VD2/CT3/CM2 Cascade control (continued) Control sequence Stand-alone (Autonomous) type of control sequence Parallel boiler arrangement (coding 3b: 0 without supply temperature sensor or coding 3b: 1 with supply temperature sensor) With the stand-alone type of control in a parallel hydraulic boiler arrangement, the cascade control unit defaults the set boiler water temperature for all active boilers.
Function description – Vitocontrol-S, VD2/CT3/CM2 Cascade control (continued) Sequential type of control sequence (coding 3b: 4) With the sequential type of control, the cascade control unit regulates to the required set supply temperature by pre-setting the output for each individual boiler. The lead boiler can be operated in modulating mode. All other boilers are operated in two stages via a defaulted output (incl. modulating burners).
Function description – Vitocontrol-S, VD2/CT3/CM2 Cascade control (continued) Net calorific strategy 1 Conventional boilers are preferably operated at their upper output range, to reliably prevent the formation of condensate due to low return temperatures. With net calorific strategy 1, an additional boiler will only be started if the maximum output of all currently active burners is insufficient to achieve the set supply temperature.
Function description – Vitocontrol-S, VD2/CT3/CM2 Cascade control (continued) Control strategy example Two boiler system with modulating burner: Boiler 1: 100 kW rated output (basic load adjusted to 33 %, see page 96) Boiler 2: 100 kW rated output (basic load adjusted to 33 %, see page 96) Gross calorific strategy (coding 3C: 0) Boiler 1 Boiler 1 Rated output in kW Total Boiler 2 Switching OFF Rated output in kW Total Boiler 2 Start-up 100 66 33 0 100 66 33 0 100 100 33 0 200 200 150 150 10
Function description – Vitocontrol-S, VD2/CT3/CM2 Cascade control (continued) Net calorific strategy 2 (coding 3C: 2) Switching OFF Boiler 1 Boiler 1 Start-up 100 66 33 0 50 33 0 Rated output in kW Total Boiler 2 Rated output in kW Total Boiler 2 100 100 100 50 0 200 200 150 150 100 100 33 0 33 0 33 0 Time Time Boiler sequence 39 3A 41 42 43 44 Boiler 1, 2, 3 or 4 permanent lead boiler. Boiler 1, 2, 3 or 4 permanent last boiler. ECO threshold boiler 1. ECO threshold boiler 2.
Function description – Vitocontrol-S, VD2/CT3/CM2 Heating circuit control Brief description Time program The control unit provides control circuits for one high temperature (boiler) circuit and two mixing valve circuits. The set supply temperature of every heating circuit results from the outdoor temperature, the set room temperature, the operating mode and the heating curve. The supply temperature of the system circuit corresponds to the common system supply temperature.
Function description – Vitocontrol-S, VD2/CT3/CM2 Heating circuit control (continued) Domestic hot water temperature With priority control: The set supply temperature will be set to 0˚C / 32˚F during DHW heating. The mixing valve closes, and the heating circuit pumps are switched OFF. Without priority control: The heating circuit control unit continues to operate with the same set value. Room temperature In conjunction with remote control and room temperature input (observe coding address b0).
Function description – Vitocontrol-S, VD2/CT3/CM2 Heating circuit control (continued) The differential temperature is that minimum temperature differential by which the common supply temperature should be higher than the currently required supply temperature of the mixing valve circuit. System with only one mixing valve circuit: The common set supply temperature will be automatically held 8˚C / 15˚F above the set supply temperature of the mixing valve circuits.
Function description – Vitocontrol-S, VD2/CT3/CM2 DHW tank temperature control Brief description The DHW tank control logic is a set-point control. It is the result of starting and stopping the DHW pump. The switching differential is ±2.5˚C / 4.5˚F. During DHW tank heating, a constant boiler supply temperature will be set (20˚C / 36˚F higher than the set DHW tank temperature, adjustable via coding address 60) and space heating is switched OFF (optional DHW tank priority).
Function description – Vitocontrol-S, VD2/CT3/CM2 DHW tank temperature control (continued) Control sequence Pump delay The DHW pump continuous operation (coding 62: 10) after the DHW tank heating, until: – the actual temperature is 5˚C / 9˚F higher than the set DHW temperature or – the maximum time delay (adjustable via coding address 62) has been reached. Without the pump time-delay for DHW tank heating (coding 62: 0). Coding 55: 0: DHW heating The DHW tank goes cold (set value –2.5 ˚C / 4.
Function description – Vitocontrol-S, VD2/CT3/CM2 Components from the parts list Line voltage motherboard The main Printed Circuit Board comprises: Relays and outputs for controlling pumps, actuators and the burner. Slot for power supply unit and boiler control unit. Supplementary Printed Circuit Board When replacing the Printed Circuit Board: 1. Record the coding and adjustments made at the control unit. 2. Replace the Printed Circuit Board.
Components – Vitotronic 100, GC1 Components from the parts list LON communication module Plug in the LON communication module into the control unit. The communication interruption will be displayed. A D A A LON LON LON LON LON LON C B B C A Control unit or Vitocom 300 B Interconnecting cable for data exchange between the control units, Part No.
Components – Vitotronic 100, GC1 Components from the parts list (continued) Boiler water temperature sensor The sensor measures the boiler water temperature of the boiler. The boiler temperature sensor is installed at the same time as the boiler insulation. 3 Check the sensor 1. Disconnect plug § in the terminal compartment of the boiler control. 2. Measure resistance of sensor at terminals ”1” and ”2” of the plug.
Components – Vitotronic 100, GC1 Components from the parts list (continued) Strap-on temperature sensor and immersion temperature sensor For measuring the boiler return temperature. 17A or 17B Electrical connection The sensor is inserted in socket ”17A” or ”17B” on the boiler control. Check the sensor 1. Disconnect plug aJA or aJB in the terminal compartment of the boiler control. 2. Measure resistance of sensor at terminals ”1” and ”2” of the plug.
Components – Vitotronic 100 Flue gas temperature sensor (for VD2/VD2A/CT3 only) The sensor measures the flue gas temperature and monitors the selected limit value. Electrical connection The sensor is inserted in socket ”15” on the boiler control. Check flue gas temperature sensor 1. Disconnect plug aG in the terminal compartment of the boiler control. 2. Measure resistance of sensor at terminals ”1” and ”2” of the plug.
Components – Vitocontrol-S, VD2/CT3/CM2 Components from the parts list Line voltage motherboard The main printed circuit board comprises: Relays and outputs for controlling pumps and actuators. Slot for power supply unit. Low voltage motherboard The main printed circuit board comprises: Connection plug for sensors, communication connections and external connections. Slot for printed circuit board, LON communication module, programming unit and Optolink printed circuit board.
Components – Vitocontrol-S, VD2/CT3/CM2 Components from the parts list (continued) LON communication module The communication interruption will be displayed. A A A LON LON LON LON LON LON C B B C A Control unit or Vitocom 300 B Interconnecting cable for data exchange between the control units, Part No. 7143 495 C Terminators (standard delivery – Vitocontrol-S, VD2/CT3/CM2) D Slots for B and C D DHW tank temperature sensor 3.
Components – Vitocontrol-S, VD2/CT3/CM2 Components from the parts list (continued) Strap-on temperature sensor and immersion temperature sensor To measure the supply or return temperature. 17A or 17B Connection See page 77. Check sensor 1. Remove plug ?, aJA or aJB. 2. Check the sensor resistance at terminals 1 and 2 of the plug. Supply or return temperature in °C / °F Resistance in Ω 30 / 86 40 / 104 60 / 140 569 592 643 3.
Components – Vitocontrol-S, VD2/CT3/CM2 Components from the parts list (continued) Outdoor temperature sensor Connection See page 77. Check sensor 1. Remove plug !. 2. Check the sensor resistance at terminals 1 and 2 of the plug. 5. 1. 3. Outdoor temperature in ˚C / ˚F Resistance in Ω –10 / 14 0 / 32 20 / 68 480 500 546 3.
Components – Vitocontrol-S, VD2/CT3/CM2 Mixing valve circuit extension kit Mixing valve motor, Part No. 7133 390 A Plug in the mixing valve motor | Mixing valve motor open ~ Mixing valve motor close Test The relay test of the control unit moves the mixing valve to open and close. Manual mixing motor adjustment Lift the motorized lever up, unhook the mixing valve handle and remove plug A. For 24V actuators please refer to instructions supplied with the actuator.
Components – Vitocontrol-S, VD2/CT3/CM2 Installation examples Mixing valve insert conversion (if required), see mixing valve installation instructions. Factory supplied Mixing valve motor rotational direction Change the mixing valve motor rotational direction for these installation examples HV HV HR KV HR KV KR KR KV KV HV KR KR HV HR HR HR HR KR HV KR HV KV KV HV HV HR HR KV KR Boiler return KV Boiler supply 5351 340 v1.
Components – Vitocontrol-S, VD2/CT3/CM2 Remote control Vitotrol 200, Part No. 7133 378 (with integral room temperature sensor for room temperature feed-back in conjunction with a mixing valve circuit) Setting of: Day temperature Heating program Economy and party mode Function changes can be made via coding addresses A0, b0 to b9, C0 to C2, E1, E2 and F2 (see coding overview). Connection 2-wire cable 164 ft / 50 m Room temperature sensor connection Two-wire cable, max. 35 m / 115 ft.
Components – Vitocontrol-S, VD2/CT3/CM2 Remote control (continued) ON S6 D 1234 D Printed circuit board DIP switches (rear of the top casing) Remote control affects DIP switch setting System circuit A1 (Heating circuit selection button !) Factory setting Mixing valve circuit M2 (Heating circuit selection button ?) Specification Power supply via KM BUS. Safety class: III Protection: IP 30 Permiss.
Components – Vitocontrol-S, VD2/CT3/CM2 Remote control (continued) Vitotrol 300, Part No. 7134 452 (with integral room temperature sensor for room temperature feed-back in conjunction with a mixing valve circuit) Setting of: Normal and reduced temperature Domestic hot water temperature Heating program Holiday program Switching times Economy and party mode Function changes can be made via coding addresses A0, b0 to b9, C0 to C2, E1, E2 and F2 (see coding overview).
Components – Vitocontrol-S, VD2/CT3/CM2 Remote control (continued) D D Printed circuit board DIP switches (rear of the top casing) Remote control affects DIP switch setting System circuit A1 (Heating circuit selection button !) Factory setting Mixing valve circuit M2 (Heating circuit selection button ?) Mixing valve circuit M3 (Heating circuit selection button §) Specification Power supply via KM BUS. Safety class: III Protection: IP 30 Permiss.
Components – Vitocontrol-S, VD2/CT3/CM2 Remote control (continued) Connecting several remote control units When connecting several remote controls to the control unit, install a terminal box on site. Version 1 C D max. 15 m / 50 ft E max. 15 m / 50 ft max. 15 m / 50 ft B A 145 On-site connection via terminal box: Connect in accordance with the diagram. The total length of all KM BUS cables should be limited to 50 m / 164 ft. 5351 340 v1.
Components – Vitocontrol-S, VD2/CT3/CM2 Remote control (continued) Version 2 max. 15 m / 50 ft C max. 15 m / 50 ft max. E D 15 m / 50 ft F B 145 A If several remote control units and additional KM BUS participants are connected, make the connections via a terminal box (on-site) as shown in the diagram. The total length of all KM BUS cables should be limited to 50 m / 164 ft. 5351 340 v1.
Components – Vitocontrol-S, VD2/CT3/CM2 Room temperature sensor, Part No. 7133 379 The room temperature sensor measures the actual room temperature, if the remote Vitotrol unit cannot be installed in a suitable location. Connection See page 77. 600 590 Check sensor 1. Disconnect the wires from the sensor. 580 2. Check the sensor resistance at terminals 9 and 13b. 570 560 Room temperature Resistance in Ω in ˚C / ˚F 550 10 / 50 15 / 59 25 / 77 540 3.
Components – Vitocontrol-S, VD2/CT3/CM2 Input Module 0 to 10 V, Part No. 7134 561 From software version 7 of Vitocontrol-S, VD2/CT3/CM2, the Input Module can be connected (software version via scan 2: 1st digit, display ≥7). 24V 5V For external control of the boiler/supply temperature via a 0 to 10VDC signal 10 to 100˚C or 30 to 120˚F 50 to 212˚C or 86 to 248˚F or to signal reduced mode and regulate a heating circuit pump to a lower speed.
Coding – Vitotronic 100, GC1 Coding 1 Calling up coding 1 1234567 1. Press 9 and w simultaneously for approx. two seconds, until the first arrow appears in the display. 2. Select the required coding address with or ; the address flashes; confirm with , the value flashes. or ; 3. Change the value with confirm with . The value is transferred and does not flash for approx. 2 seconds. Then the display flashes again. Call up further addresses with or . 4. Press 9 and w simultaneously for approx. 1 second.
Coding – Vitotronic 100, GC1 Coding 1 (continued) Coding in the factory setting Possible change Boiler/burner 06: 87 Maximum boiler water temperature limit: 87˚C / 189˚F 06: 20 Maximum boiler water temperature limit to adjustable from 20 to 127˚C / 68 to 261˚F 06:127 Consecutive boiler number in multi-boiler systems (in conjunction with coding address 01) 07: 2 to 07: 4 Boiler 07: 1 Consecutive boiler number in multi-boiler systems (in conjunction with coding address 01) Burner (two stage/mod.
Coding – Vitotronic 100, GC1 Coding 2 Calling up coding 2 1234567 1. Press w and rw simultaneously for approx. 2 seconds, until the first two arrows appear in the display; confirm with 2. Select the required coding address with or ; the address flashes; confirm with , the value flashes. or ; 3. Change the value with confirm with . The value is saved and does not flash for approx. 2 seconds. Then the display flashes again. Call up further addresses with or . 4. Press w and rw simultaneously for approx.
Coding – Vitotronic 100, GC1 Coding 2 (continued) Coding in the factory setting Possible change Burner (mod.
Coding – Vitotronic 100, GC1 Coding 2 (continued) Coding in the factory setting Possible change Boiler 0C: 5 Isolation valve modulating independently of set boiler water temperature 0d: 2 0C: 0 No function 0C: 1 Constant control of return temperature 0C: 2 Controlled with time-delay isolation valve 0C: 3 Isolation valve controlled via boiler water temperature 0C: 4 Isolation valve modulating subject to set boiler water temperature 0d: 0 Without Therm-Control 0d: 1 With Therm-Control, affec
Coding – Vitotronic 100, GC1 Coding 2 (continued) Coding in the factory setting Possible change Burner (two stage/mod.) 16:*1 Burner offset in ˚C / ˚F: Temporary reduction of set boiler water temperature after burner start.
Coding – Vitotronic 100, GC1 Coding 2 (continued) Coding in the factory setting Possible change Boiler/burner 24: 0 No maintenance indication 24: 1 Maintenance indication in display (address is automatically set and must be manually reset after maintenance has been carried out) 26: 1 to 26: 99 Input of 0.1 to 9.9; 1 setting step = 0.
Coding – Vitotronic 100, GC1 Coding 2 (continued) Coding in the factory setting Possible change General (continued) 2C: 5 Maximum time delay of isolation valve: 5 minutes 2C: 0 No time delay 2C: 1 to 2C: 60 Time delay adjustable from 1 to 60 minutes Shunt pump control function only ON if boiler is enabled 2d: 1 Shunt pump control function ON, independent of whether boiler is enabled or not Boiler 2d: 0 General 40:125 Actuator operating time for isolation valve, three-way mixing valve or mixing v
Coding – Vitotronic 100, GC1 Coding 2 (continued) Coding in the factory setting Possible change General 4E: 0 4F: 5 Connection on plug gS: Isolation valve or three-way mixing valve for return temperature control 4E: 1 Do not adjust Time delay shunt or boiler circuit pump: 5 minutes 4F: 0 No pump time delay 4F: 1 to 4F: 60 Time delay adjustable from 1 to 60 minutes Without communication module 76: 1 With LON communication module; will be recognized automatically 76: 2 Do not adjust General
Coding – Vitotronic 100 Burner switching differential For adjustment, see coding 04 on page 156. Switching differential 4˚C / 7˚F (coding 04: 0) Burner ON Time OFF +2 Set -2 Lower heat demand Average heat demand Higher heat demand Heat demand-dependent switching differential ERB50 function (coding 0 : 1) Subject to heat demand, values between 6 and 12˚C / 11 and 22 °F result.
Coding – Vitocontrol-S, VD2/CT3/CM2 Coding 1 Calling up coding 1 1 2 3 Code 1 Cod. 1 1. Press 9 and w simultaneously for approx. 2 seconds. 2. Select the required coding address with or ; the address flashes; confirm with , the value flashes. 3. Change the value with or ; confirm with . The display briefly shows Adopted, then the address flashes again. Call up further addresses with or . 4. Press 9 and w simultaneously for approx. 1 second.
Coding – Vitocontrol-S, VD2/CT3/CM2 Coding 1 (continued) Coding in the factory setting Possible change Multi-boiler control unit 36: 0 Electronic minimum system supply temperature limit set to 0˚C / 32˚F 36: 1 Electronic minimum system supply temperature to limit adjustable from 0 to 127˚C / 32 to 261˚F 36:127 37: 80 Electronic maximum system supply temperature limit set to 80˚C / 176˚F 37: 20 Electronic maximum system supply temperature to limit adjustable from 20 to 127˚C / 68 to 261˚F 37:127 Con
Coding – Vitocontrol-S, VD2/CT3/CM2 Coding 1 (continued) Coding in factory setting Possible change General (continued) 77: 5 LON participant number 77: 1 to 77: 99 LON participant number, adjustable from 1 to 99 Please note: Allocate each number only once. A2: 0 Without DHW tank priority applicable to heating circuit pump A2: 1 A2: 3 to A2: 15 No function A5: 0 Without heating circuit pump logic function DHW priority A1 A2: 2 DHW tank priority applicable to heating circuit pump Summer econ.
Coding – Vitocontrol-S, VD2/CT3/CM2 Coding 2 The summary from page 168 lists all possible coding addresses. System design Cod. 00 The coding addresses are grouped in accordance with the adjacent sequence. Multi-boiler control unit Cod. 35 to 3F General Cod. 40 Multi-boiler control unit Cod. 41 to 49 General Cod. 4A to 4F DHW Cod. 54 to 75 General Cod. 76 to 9F System circuit A1 Cod. A0 to F2 Mixer circuit M2 Cod. A0 to F2 Mixer circuit M3 Cod.
Coding – Vitocontrol-S, VD2/CT3/CM2 Coding 2 (continued) Overall summary Coding in the factory setting Possible change System design 00: 1 See page 164 Multi-boiler control unit 35: 4 4 boilers connected to Vitocontrol-S, VD2/CT3/CM2 35: 1 to 35: 3 1 to 3 boilers connected to Vitocontrol-S, VD2/CT3/CM2 36: 0 Electronic minimum system supply temperature limit 36: 1 Electronic minimum system supply temperature to limit adjustable from 0 to 127˚C / 32 to 261˚F set to 0˚C / 32˚F 36:127 37: 80 Electron
Coding – Vitocontrol-S, VD2/CT3/CM2 Coding 2 (continued) Coding in the factory setting Possible change Multi-boiler control (continued) 3d: 1 Output balance for gross calorific strategy and net calorific strategy 1 3d: 0 No output statement Please note: Vitocontrol-S, VD2/CT3/CM2 controls only in accordance with net calorific strategy 2 3E: 0 Common supply pump ON/OFF subject to heat demand 3E: 1 Common supply pump OFF, if external disable (plug aVD) is active 3F: 0 Without DHW tank priority for
Coding – Vitocontrol-S, VD2/CT3/CM2 Coding 2 (continued) Coding in factory setting Possible change Multi-boiler control (continued) 48: 35 Only for sequential type of control: Control amplification of supply temperature set to 3.5 %/K 48: 1 Control amplification adjustable to from 0.1 to 19.9 %/K 48:199 1 setting step = 0.
Coding – Vitocontrol-S, VD2/CT3/CM2 Coding 2 (continued) Coding in the factory setting Possible change DHW 56: 0 Setting range for DHW temperature: 10 to 60˚C / 50 to 140˚F 56: 1 Setting range for DHW temperature: 10 to 95˚C / 50 to 203˚F ¨Safety instructions! Observe the max.
Coding – Vitocontrol-S, VD2/CT3/CM2 Coding 2 (continued) Coding in factory setting Possible change DHW (continued) With Vitosolic: 3rd DHW set-point 40˚C / 104˚F Reloading suppression will be active above set temperature. DHW tank is heated only by solar heating system.
Coding – Vitocontrol-S, VD2/CT3/CM2 Coding 2 (continued) Coding in factory setting Possible change General (continued) 7b: 1 Transmitting time via LON BUS 7b: 0 No transmission of time via LON BUS 7E: 0 Without flue gas cascade or with flue gas cascade with negative draft 7E: 1 With flue gas cascade with positive draft 7F: 1 Detached house 7F: 0 Multi-occupancy house 80: 1 A fault message is issued, if a fault is active for at least 5 seconds 80: 0 Immediate fault message Automatic daylig
Coding – Vitocontrol-S, VD2/CT3/CM2 Coding 2 (continued) Coding in factory setting Possible change General (continued) 92:184 Do not adjust Address will only be displayed if 8A: 176 has been programmed.
Coding – Vitocontrol-S, VD2/CT3/CM2 Coding 2 (continued) Coding in factory setting Possible change General (continued) 99: 0 Connection to terminals 2 and 3 in plug aVD (External disable/external mixing valve close) inactive Contact affects: No function 99: 2 Mixing valve close: Mixing valve circuit M2 99: 3 No function 99: 4 Mixing valve close: Mixing valve circuit M3 99: 5 No function 99: 6 Mixing valve close: Mixing valve circuits M2 and M3 99: 7 No function 99: 8 External disable 99:
Coding – Vitocontrol-S, VD2/CT3/CM2 Coding 2 (continued) Coding in factory setting Possible change General (continued) Input aVH disabled 9b: 70 Set minimum supply temperature for external demand (input aVH): 70˚C / 158˚F 9b: 0 9C: 20 Monitoring LON participants: When there is no response from a participant, values defaulted inside control unit continue to be used for a further 20 min. Only then will a fault message be triggered.
Coding – Vitocontrol-S, VD2/CT3/CM2 Coding 2 (continued) Coding in factory setting Possible change System circuit/mixing valve circuit (continued) A4: 0 With frost protection A4: 1 A5: 5 A5: 0 With heating circuit pump logic function (economy circuit): Heating circuit pump OFF, if outdoor temperature (AT) is 1 K higher than set room temperature (RTset) AT > RTset + 1 K A5: 1 A5: 2 A5: 3 A5: 4 A5: 5 A5: 6 A5: 7 to A5: 15 No frost protection Adjustment only possible if coding A3: –9 is set.
Coding – Vitocontrol-S, VD2/CT3/CM2 Coding 2 (continued) Coding in factory setting Possible change Mixing valve circuit AA: 2 With output reduction through temperature sensor aJA AA: 0 Without output reduction AA: 1 No function b0: 1 Heating mode: With outdoor reset Reduced mode: With room temperature feed-back b0: 2 Heating mode: With room temperature feed-back Reduced mode: With outdoor reset b0: 3 Heating mode/ reduced mode: With room temperature feed-back b2: 0 No room influence b2: 1 t
Coding – Vitocontrol-S, VD2/CT3/CM2 Coding 2 (continued) Coding in factory setting Possible change Systems/mixing valve circuit (continued) b7: 0*1 With remote control unit and for heating circuit, operation with room temperature feed-back must be programmed: Without start-up optimization b7: 1 With start-up optimization: Max. offset 2 hours 30 minutes b7: 2 Max.
Coding – Vitocontrol-S, VD2/CT3/CM2 Coding 2 (continued) Coding in factory setting Possible change Systems/mixing valve circuit (continued) C8:31*1 With remote control unit and for heating circuit, operation with room temperature feed-back must be programmed: Without limiting room influence C8: 1 to C8: 30 Room influence limit adjustable from 1 to 30 K d5: 0 External heating program changeover via plug aVD: Heating program changes to constant operation with reduced room temperature d5: 1 Heating pr
Coding – Vitocontrol-S, VD2/CT3/CM2 Coding 2 (continued) Coding in factory setting Possible change Systems/mixing valve circuit (continued) F8: -5 With outdoor temperature sensor: Below an outdoor temperature of -5˚C / 23˚F, the reduced room temperature set-point is raised to an outdoor temperature dependent value according to the set heating curve (up to the temperature limit as defined in coding address F9). See example on next page.
Coding – Vitocontrol-S, VD2/CT3/CM2 Coding 2 (continued) Supply temperature in ºC / ºF Example 1 (F8:-5, F9:-14) 90/194 80/176 70/158 60/140 A 50/122 40/104 35 95 B 30 86 30/86 25 77 20 68 15 59 10 50 10 50 Set room temperature in ºC / ºF 5 41 5 41 0 32 0 32 -5 23 -10 14 -15 5 -20 -4 Outdoor temperature in ºC / ºF AHeating curve for normal room temperature operation BHeating curve for reduced room temperature operation Boiler water temperature set-point in ºC / ºF Example 2 (FA:20, F
Coding – Vitocontrol-S, VD2/CT3/CM2 Slab curing function diagram Coding, see page 180.
Connection and wiring diagrams – Vitotronic 100, GC1 Summary Low voltage motherboard Line voltage motherboard Programming unit Optolink printed circuit board/override switch A8 Supplementary printed circuit board A9 Boiler coding card A10 LON communication module A11 Power supply unit printed circuit board A12 Boiler control unit 5351 340 v1.
Connection and wiring diagrams – Vitotronic 100, GC1 A1 1 34-pin Low voltage motherboard . Boiler temperature sensor No function Flue gas temperature sensor Temperature sensor T1 Temperature sensor T2 Connection for external equipment aVG KM BUS aVH Connection for external equipment LON Interconnecting cable for data transfer between control units S3 Override switch S V1 Fault indicator (red) V2 ON/OFF indicator (green) 5351 340 v1.4 A10 A7 A2 A6 A9 A 8 .
Connection and wiring diagrams – Vitotronic 100, GC1 Line voltage motherboard sÖ sA sL fÖ fA 5351 340 v1.4 Control output DHW pump Shunt or boiler circuit pump Power supply, 120 VAC Burner, connection to DIN 4791 gÖ Compiled failure alarm gS Boiler isolation valve or Boiler return valve lÖ Burner stage 2/mod.
Connection and wiring diagrams – Vitotronic 100. GC1 5351 340 v1.
Connection and wiring diagrams – Vitocontrol-S, VD2/CT3/CM2 Summary Mixing valve extension board Low voltage motherboard Line voltage motherboard Mixing valve extension supplementary printed circuit board A5 Heating circuit selection buttons printed circuit board A6 Programming unit A7 Printed circuit board Optolink/override switch A8 Supplementary printed circuit board A10 LON communication module A11 Power supply unit printed circuit board A12 Boiler control unit 5351 340 v1.
Connection and wiring diagrams – Vitocontrol-S, VD2/CT3/CM2 34-pin Low voltage motherboard . . ! ? § % aJA aJB aVD aVG aVH LON 5351 340 v1.
Connection and wiring diagrams – Vitocontrol-S, VD2/CT3/CM2 190 250V Heating circuit pump DHW pump (accessory) DHW recirculation pump Shunt or supply pump Power supply Compiled/central failure alarm gS Control of constant return temperature aBH Power supply for accessories F Fuse K2-K7 Relays S1 ON/OFF switch 8 5351 340 v1.4 sÖ sA sK sL fÖ gÖ 6.
Connection and wiring diagrams – Vitocontrol-S, VD2/CT3/CM2 Mixing valve extension Printed Circuit Board A4 A1 ? sÖ gS K1–K6 Supply temperature sensor Heating circuit pump Mixing valve motor Relays Applicability 5351 340 v1.4 Vitotronic 100, type GC1, Order No. 7248 247, from Serial No. 7248 247 Vitocontrol-S, VD2/CT3/CM2, 300-K MW1, Order No. 7248 233, from Serial No. 7248 233 Contact your Viessmann representative for information on the Vitotronic 333.
Appendix Specification – Vitotronic 100, GC1 Rated voltage: Rated frequency: Rated current: Power consumption: Safety class: Protection: Function: 120VAC 60 Hz 2 × 6 A~ 5W I IP 20 D to EN 60529, safeguard through design and installation Type 1B to EN 60730-1 Permissible ambient temperature: During operation: . 0 to 40˚C . 32 to 104˚F . Installation in living accommodation . and boiler rooms (normal ambient . . .
Appendix Parts List VITOTRONIC 300-K MW1 Series Order No. Vitocontrol-S MW1W (shown to right) Custom Control Panels MW1S (not shown) Serial No. *1 7134 557, 7134 558 7248233 7248 234 5351 340 v1.4 Ordering Replacement Parts: Please provide product Model and Serial Number from rating plate when ordering replacement parts. Order replacement components from your Viessmann distributor. Parts 001 Hinges 008 Support arm 011 Power module (wired) 013 Front housing (with Pos.
Appendix Parts List (continued) 048 047 055 050 016 049 054 052 014 014 013 A A Rating plate *1 A 16-digit bar-coded Serial No. is printed on the front housing, below the flip-down cover. 194 5351 340 v1.
5351 340 v1.
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