Warning: If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, personal injury or death. Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance. Installation and service must be performed by a trained and certified installer, service agency or the gas supplier. Improper installation, adjustment, alteration, service or maintenance can cause injury or property damage. Refer to this manual.
| Table of contents Table of contents 1 Key to symbols and safety instructions . . . . . . . . . . . . . . . . . . . 3 1.1 Key to symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.2 Safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 FCC rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3 Appliance details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3.
Key to symbols and safety instructions | 3 If you smell gas 1 Key to symbols and safety instructions 1.1 Key to symbols Warnings Warnings in this document are identified by a warning triangle printed against a grey background. Keywords at the start of a warning indicate the type and seriousness of the ensuing risk if measures to prevent the risk are not taken. The following keywords are defined and can be used in this document: • NOTICE indicates that damage to property may occur.
| Key to symbols and safety instructions Danger from electric shock ▶ Ensure that only an authorized contractor performs electrical work. ▶ Before performing electrical work, disconnect the power and secure the unit against unintentional reconnection. ▶ Ensure the system has been disconnected from the power supply. Risk of scalding at the hot water draw-off point ▶ When the water heater is in operation, temperatures in excess of 122 °F (50 °C) can occur.
Key to symbols and safety instructions | 5 For your safety ▶ Do not store or use gasoline or other flammable, combustible or corrosive vapors and liquids in the vicinity of this or any other appliance. DANGER: Fatal accidents! Carbon monoxide poisoning. ▶ Carefully plan where you install the heater. Correct combustion air supply and flue pipe installation are very important. If a gas appliance is not installed correctly, fatal accidents can result such as carbon monoxide poisoning or fire.
| FCC rules WARNING: Installation in mobile homes. ▶ Installation in mobile homes shall conform to Title 24 CFR, part 3280 and/or CAN/CSA Z240 MH Series, Mobile Homes. 2 FCC rules FCC: This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. 3 Appliance details 3.
Appliance details | 7 3.2 Specifications (Technical data) Technical characteristics Weight Approved in US/Canada 830 ES Units pounds (kg) 830 ES 67 (30.5) Gas types Technical characteristics Capacity Units Maximum flow rate at a 25 °F (13.9 °C) rise Maximum flow rate at a 35 °F (19.4 °C) rise Maximum flow rate at a 45 °F (25 °C) rise Maximum flow rate at a 55 °F (30.6 °C) rise Maximum flow rate at a 75 °F (41.7 °C) rise Maximum flow rate at a 90 °F (50 °C) rise Maximum output GPM (l/min) 11.
| Appliance details 3.3.1 The box includes ▶ Lift front cover panel upward and remove. • • • • • 830 ES Bracket for wall hanging the heater Exhaust vent adaptor (with 4 screws and gasket provided) Combustion air inlet adaptor (with 3 screws and gasket provided) Installation manual (manual can be downloaded at www.boschclimate.us) • Product registration card Please complete and return the enclosed product registration card.
Appliance details | 9 • • • • In Canada: The Installation must conform with CSA B149.(1,2) INSTALLATION CODES and /or local installation codes. 2. Carefully plan where you install the heater. Correct combustion air supply and vent pipe installation are very important. If not installed correctly, fatal accidents can occur, such as carbon monoxide poisoning or fire. 3.
| Installation instructions 4 Installation instructions 4.1 Specialized tools The following specialized tools may be required for installation: • Manometer • Multi-meter • Combustion Gas Analyzer 4.2 Introduction Please follow these instructions. Failure to follow instructions may result in: ▶ Damage or injury. ▶ Improper operation. ▶ Loss of warranty. DANGER: ▶ The water heater must be installed by a qualified installer in accordance with these instructions.
Installation instructions | 11 CAUTION: ▶ The vent system must be installed by a qualified installer in accordance with these instructions. If improperly installed, a hazardous condition such as explosion or carbon monoxide poisoning could result. Bosch Water Heating will not be responsible for improperly installed appliances. NOTICE: ▶ In areas where outside temperatures routinely come close to freezing, sealed combustion operation is required.
| Installation instructions 4.3.2 Vent specifications Install appliance as close to point of vent termination as possible. The exhaust piping must vent directly to the outside of the structure. Horizontal sections of vent must pitch upward towards termination ¼" for every foot of horizontal length, to prevent the pooling of condensate, and be supported at 4 foot intervals with overhead hangers. Exception: horizontal run between last elbow and termination must pitch down to termination 1/4" per foot.
Installation instructions | 13 Calculation example for 3" venting: Calculation example for 4" venting: Exhaust Exhaust System used Number of 90° elbows needed: Number of 45° elbows needed: Concentric 1 2 System used Number of 90° elbows needed: Number of 45° elbows needed: Table 11 Table 15 Calculation of example Max. length 90° elbow reduction sub-total = 45° elbow reduction Total = Calculation of example Max.
| Installation instructions Required direct vent terminal clearances (twin pipe / concentric penetration) Fig. 11 A Clearance above grade, veranda, porch, deck or balcony Canadian installations1) 12 in. B Clearance to window or door that may be opened 36 in. 12 in.
Installation instructions | 15 Required other than direct vent terminal clearances (single pipe penetration) Fig. 12 A Clearance above grade, veranda, porch, deck or balcony Canadian installations1) 12 in. B Clearance to window or door that may be opened 36 in.
| Installation instructions 4.3.3 Vent configuration examples Below are approved examples of vertical and horizontal venting installations. Fig. 13 Horizontal side wall venting installation (single pipe penetration) [1] [2] [3] [4] [5] [6] [7] Termination Minimum above ground or normally expected snow accumulation level Appliance Drain tee Elbow (note: minimum 1ft of straight vent pipe required) Horizontal run ¼ " per foot down to termination Hanger strap Fig.
Installation instructions | 17 Fig. 18 [LA] 3ft minimum Fig.
| Installation instructions Fig. 20 Exhaust connection ▶ Attach the combustion air inlet accessory to the top of the unit fig. 21 (position 2) using the 3 screws and gasket provided, and install 3" air intake pipe over the accessory. Fig. 21 Inlet connection Fig. 19 [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] Appliance Condensate drain Elbow Hose clamp Hanger strap Horizontal run ¼ " rise/ft May be insulated if necessary Chimney Rain cap Storm collar Flashing Silicone seal 4.3.
Installation instructions | 19 • 1. Install condensate drain on a horizontal section of the exhaust pipe as close to the heater as possible. • 2. The condensate must be disposed of according to local codes. • 3. To install condensate drain in vent system, use PVC 3" X 3" X 1.5" tee (part# 196278) and reduce for drain connection. Listed below is an additional measure designed to further limit backdraft in extreme conditions assuming all other possible causes have been addressed.
| Installation instructions 4.3.7 Venting for manufactured (mobile) homes WARNING: ▶ In a manufactured (mobile) home installation, combustion air shall not be supplied from occupied spaces. When this appliance is installed in a mobile home, it is required that the venting be installed such that all combustion air is provided from outside the structure. As such, single pipe venting installations are forbidden in mobile home installations.
Installation instructions | 21 4.3.8 Fan speed adjustment necessary adjustments to fan speed values may result in improper operation of the appliance. NOTICE: IMPORTANT INFORMATION! ▶ Natural gas heaters with installation altitudes below 2,000 ft above sea level disregard this section. Installation adjustment: After installing the tankless water heater, the fan speed values for minimum power (P2) and maximum power (P1) may need adjustment due to variations in altitude and vent pipe length.
| Installation instructions Adjusting minimum power fan speed (P2) Adjusting maximum power fan speed (P1) To select fan speed: ▶ Press ON/OFF button into ON. ▶ Press and hold simultaneously buttons + or seconds, until display reads P2. To select fan speed: and P for 3 ▶ Press ON/OFF button into ON. ▶ Press and hold simultaneously buttons + or seconds, until display reads P2. and P for 3 Fig. 27 Fig. 28 ▶ Press P to enter P2 adjustment.
Installation instructions | 23 1. The referenced "special venting system" instructions shall be included with the appliance or equipment installation instructions; and 2. The "special venting systems" shall be product approved by the Board, and the instructions for that system shall include a parts list and detailed installation instructions.
| Installation instructions NOTICE: Risk of appliance freezing! ▶ The water in this water heater is cold and always remains cold except for the times the burner is on. In the event of power outage in conjunction with freezing temperatures, it is recommended that the heater be drained. See chapter 7.2, page 36 “Winterizing” for draining instructions.
Installation instructions | 25 6720608158-05.1AL Fig. 31 Mounting the heater CAUTION: Personal injury and property damage. ▶ Appliance must be installed vertically. 4.8 Mounting installation for manufactured (mobile) homes Fig. 32 Mounting the heater in manufactured (mobile) homes When installing this appliance in a mobile home the unit must be additionally secured at the bottom of the water heater as shown in fig. 32.
| Installation instructions 4.9 Gas piping & connections Before connecting the gas supply, check the rating plate on the right side of the heater to be sure that the heater is rated for the same gas to which it will be connected. In the United States: The installation must conform with local codes or, in the absence of local codes, the National Fuel Gas Code ANSI Z223.1/ NFPA 54. In Canada: The Installation must conform to CGA B149 INSTALLATION CODES and/or local installation codes.
Installation instructions | 27 4.9.1 FOR NATURAL GAS Maximum Capacity of pipe in Cubic Feet of Gas per Hour for Gas Pressure of 0.5 Psig or less and a Pressure drop of 0.3” in Water Column (0.75mbar).(Based on a 0.60 Specific Gravity Gas) BTU numbers given in thousands. Follow boxed numbers for piping just one 830 ES (example: ¾” B.I. Natural Gas pipe for 10 ft (3.0m) will handle 278,000 BTU/hr (81.5 kW).
| Installation instructions 4.10 Water connections NOTICE: ▶ This heater is not approved for preheated water applications exceeding 140°F (60°C). NOTICE: ▶ In applications where inlet water temperature can exceed 140°F (60ºC), a 3-way valve or mixing valve must be installed before the appliance to prevent water exceeding 140°F (60°C) from entering the appliance. ▶ When facing the heater, the ¾ ” cold connection is on the bottom right and the hot connection is on the bottom left.
Installation instructions | 29 commonly done. Contact Bosch Thermotechnology if further information is needed. 4.13 Space heating applications CAUTION: ▶ If the set point temperature is above 120°F, precautions should be taken to protect users of potable water from scalding. CAUTION: ▶ Propylene glycol may be used for freeze prevention ONLY on the space heating side of the heat exchanger. Do not use ethylene glycol (automotive antifreeze). Fig.
| Installation instructions 830ES 70 60 Pressure (Feet of Head) 50 40 30 20 10 0 0.0 1.0 2.0 3.0 4.0 Flow (GPM) 6720644936-01.1V 5.0 Fig. 38 Pressure drop curve Fig.
Electrical connections | 31 4.14 Measuring gas pressure Confirm gas pressure upon installation. Connecting manometer ▶ Shut off gas supply at installer supplied shutoff valve for this water heater. ▶ Remove front cover and locate inlet gas pressure test port (see Fig.41). ▶ Loosen screw inside left test point fitting (do not remove) and connect manometer tube to test point. Static Pressure Test ▶ Turn gas supply back on. ▶ Record static gas pressure reading in table 32.
| Operation instructions ▶ Remove the six screws from the back cover of the control unit, see fig. 44, pos. 2. ▶ Check the fuses in the printed circuit board, see fig. 44, pos. 3. 6720608643-15.1AL 1 Fig. 42 Connecting power supply cord [1] Power cord length: 3ft. Note: The outlet the appliance is plugged into should be clear from possible water damage. 5.2 Position of the fuses in control unit To check fuses, proceed as follows: ▶ Remove the front cover, see fig. 4, page 8.
Operation instructions | 33 6.2 For your safety read before operating your water heater DANGER: Explosion hazard! ▶ If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life. Fig. 47 Temperature indicator A. This appliance is equipped with electronic ignition for lighting the main burner. When turning the heater on, follow these instructions exactly. WHAT TO DO IF YOU SMELL GAS Fig. 48 Error indicator Fig.
| Operation instructions ▶ Press buttons + or in order to reach desired temperature. Fig. 54 Setting the water temperature The desired temperature of the hot water can be adjusted on the front control panel of the heater. The water heater has an electronically controlled gas valve that modulates the burner input in response to both varying hot water flow rates and/or changes in any incoming and outgoing water temperatures.
Maintenance and service | 35 6.6 Operation ▶ When a hot water tap is opened, main burner ignites and LCD displays indication . ▶ Press “Program” key. LCD shows pre-memorized temperature, which is now the hot water selected temperature. 6.9 Locked condition This condition is only valid for appliances with one or more remote controls installed. Fig. 57 ▶ LCD flashes until selected temperature is reached. ▶ Power bar indicates power percentage in use. 6.
| Maintenance and service Section 4.4, page 23, chapter 4.3, page 10 of this manual to verify exhaust system and combustion air supply meets manufacturer's specifications Pressure Relief • Manually open the pressure relief valve to ensure proper operation Inlet Water Filter • Verify the inlet filter screen is clean and undamaged. The inlet water filter is located on the bottom of the appliance, to the right of the cold water inlet fitting. (See Fig.35, page 28).
Maintenance and service | 37 CAUTION: ▶ One factor that may affect CO2 levels is improper gas pressure. Please see Chapter4.14 for the procedure to measure gas pressure and record your findings below: Static Gas Pressure: P1 Operating Pressure: “ WC “ WC Note: When making adjustments, make sure combustion cover is installed. CO2 range (%) Nat. Gas Max. CO level (measured) max. input P1 6.3 % - 6.9 % < 250 ppm min. input P2 2.3 % - 2.6 % < 60 ppm max. input P1 8.3 % - 8.9 % < 250 ppm min.
| Maintenance and service Fig. 65 Adjusting P1 CO2 level Fig. 66 Adjusting P2 CO2 level 7.5 Program values This section describes details on programming the appliance. For most applications the factory default values will provide robust and stable operation. Only adjust the factory settings if the installation requires changes as indicated in the appropriate section of this manual. Refer to chapter 7.6 Control board diagnostics (page 38) regarding how to access these P-modes.
Maintenance and service | 39 7. Once in the selected diagnostic mode of your choice, press and release the P button to display the diagnostic information. EXAMPLE: to read the flow rate in gallons per minute while the unit is flowing water, cycle to the '3d' mode and press the P button. A reading of 25 on the display would indicate the heater is reading a flow rate of 2.5 gallons/minute. 8.
| Troubleshooting 8 Troubleshooting CAUTION: ▶ If you are unable to perform the tasks listed below, or need additional assistance please contact your original installer or a licensed gas technician. 8.1 Introduction Many of the questions customers ask regarding operation of this unit can be answered by following the troubleshooting steps as outlined below. Visit our web site at www.bosch-climate.us for more detailed troubleshooting. For best results, perform each step before proceeding to the next.
Troubleshooting | 41 8.6 Hot water temperature fluctuates at tap 1. Hot water is very hot out of the water heater, requiring mixing in cold water in order to attain a usable hot water temperature. The addition of too much cold will overpower hot water flow from the tankless water heater. If this slows the flow through the tankless water heater below its activation point, it will shut off the burners. The end result is nothing but cold water coming out of the outlet. Consult www.boschclimate.
| Problem solving 9 Problem solving 9.1 Error code diagnostics To remove error code from the display, press the reset button. Display (Flashing) Cause Fault in the flue gas limiter. Temperature above 230°F (110 °C) inside the cabinet. Solution 1. Check continuity of the flue gas limiter (see fig. 71, page 48). Go to steps two and three to determine flue gas limiter fault and repair it. 2.
Problem solving | 43 Display Cause Solution No rotational speed sensor signal from 1. Disconnect power supply cord and check wire connections on back side of fan and primary fan. the two connectors on the control board, see fig. 78, page 55. 2. Check supply voltage. It must be 120VAC and properly grounded. 3. Possible defective component in fan or defective control unit call Bosch Water Heating for further instructions. (Flashing) Water flow signal over specified maximum value.
| Problem solving Display Cause No flame ionization detected with water flow. Solution 1. Verify that all manual gas shut off valves are open. 2. Check gas type. See fig. 2, page 7. 3. Reset error code and open a water tap to cycle the heater in an effort to purge air. Cycling hot water tap on and off multiple times may be necessary. If heater still faults with EA error code, have a licensed gas technician properly purge air out of the gas line leading to the water heater. 4.
Electrical diagram | 45 10 Electrical diagram 16 20 15 13 M M 12 M E PS 11 10 19 T=104°C T=220°F 18 9 T=110°C T=230°F 8 FS 7 6 Casc. 5 input Casc. 4 output Back flow 3 2 1 17 16 21 14 ... 1 20 ... JP2 JP7 JP5 1 JP8 JP6 22 6720608158-92.1AL Fig.
| Sensor resistance charts 11 Sensor resistance charts Fig. 68 Outlet / Inlet immersion sensor characteristics Fig.
Functional scheme | 47 12 Functional scheme Fig.
| Interior components diagram and parts list 13 Interior components diagram and parts list 13.1 Interior components Fig.
Interior components diagram and parts list | 49 Fig.
| Interior components diagram and parts list 13.2 Components diagram 13.2.1 Group 1 Fig.
Interior components diagram and parts list | 51 13.2.2 Group 2 Fig.
| Interior components diagram and parts list 13.2.3 Group 3 Fig.
Interior components diagram and parts list | 53 13.2.4 Group 4 Fig.
| Interior components diagram and parts list 13.2.5 Group 5 Fig.
Interior components diagram and parts list | 55 13.2.6 Group 6 6720644956-09.1V Fig. 78 Components Diagram Item 1 2 3 4 5 6 7 8 Table 46 830 ES Description Control unit Fuse T2.5A Fuse T1.
| Protecting the environment 14 Protecting the environment Packing The packing box may be fully recycled as confirmed by the recycling symbol . Components Many parts in the heater can be fully recycled in the end of the product life. Contact your city authorities for information about the disposal of recyclable products. Saving water resources: ▶ Make sure you close all the taps after any use. Avoid leaving the taps dripping. Repair any leaking tap.
LIMITED WARRANTY FOR BOSCH THERM AND GREENTHERM TANKLESS WATER HEATERS | 57 15 LIMITED WARRANTY FOR BOSCH THERM AND GREENTHERM TANKLESS WATER HEATERS MODELS COVERED CONDITIONS OF WARRANTY This limited warranty is provided by Bosch Thermotechnology Corp. (BTC) and covers C1210ES, C1050ES, C950ES, 940ESO, 940ES, 830ES models (hereinafter referred to as "Water Heater").
| Installer Checklist to be completed by installer upon installation 16 Installer Checklist to be completed by installer upon installation Serial Number (8 digit serial number is located on rating plate on right side panel) ___ ___ ___ ___ ___ ___ ___ ___ Gas Pressure Reading 1) Static Operating Water Pressure Building Water Pressure Range if on Well system Installing Company Installer name Address Phone Table 47 1) See Chapter 4.
| 59 Notes 830 ES 6 720 644 936 (2013/01)
