TOWERCHRON QM1 and QM2 F Installation and user instructions OF EN ON 2
Table of Contents Safety Instructions �������������������������������������������������������������3 What is a programmer? �����������������������������������������������������4 General installation instructions �����������������������������������������5 Specifications ��������������������������������������������������������������������5 “TOWERCHRON QM1” ������������������������������������ 6 Applications (QM1) ������������������������������������������������������������6 Programming your “TOWERCHRON QM1”
Safety Instructions Danger! Risk of electric shock! ZZConnection WARNING and mounting must be performed by a professional electrician! • Installation must be carried out by a qualified electrician and conformed to current IEE Regulations! • Mains supply must be suitably fused (usually 3 amps) and provision made for Class A circuit disconnection. • Control is suitable for fixed wiring only.
What is a programmer? Programmers allow you to set ’On’ and ’Off’ time periods. Some models switch the central heating and domestic hot water on and off at the same time, while others allow the domestic hot water and heating to come on and go off at different times. Set the ’On’ and ’Off’ time periods to suit your own lifestyle. On some programmers you must also set whether you want the heating and hot water to run continuously, run under the chosen ’On’ and ’Off’ heating periods, or be permanently off.
General installation instructions Backplate N L 1 2 3 Terminal Block 4 Fixing Holes Specifications Installation double insulated Rating 5 amps (2 amps) at 240 volts 50 hertz Fitting surface mounted or to a single gang plaster depth socket outlet Dimensions 156 x 85 x 42 Maximum ambient temperature 50° centigrade Earth Terminal Cable Knockout Fixing Screw The TOWERCHRON QM1 and QM2 are both double insulated so earth protection is not required.
“TOWERCHRON QM1” Applications (QM1) OF F OFF ON 6 TIMED CONST. • Any simple time switching application up to the stated rating. • Domestic heating system where both heating and hot water services are required to switch ON and OFF at the same time. • Controlling a “combi” or “combination boiler”.
Programming your “TOWERCHRON QM1” Setting time of day OF F Rotate the minute hand of the clock until the arrowhead in clock face aligns with the correct time on the outer dial, i.e. 8 = 8.00 a.m., 14 = 2.00 p.m. ON Setting ON/OFF times Move all tappets between ON and OFF times required to outer position. The minimum switching time is 15 minutes. Set any other ON/OFF periods in a similar manner ON Slide switches (under drop down cover) Pull top edge of drop down cover to gain access to slide switch.
Internal wiring diagram (QM1) = ~ N L 1 2 OFF 3 4 ON • Carry out wiring installation using appropriate diagram as shown. • When the TOWERCHRON QM1 timeswitch is to be used with a combination boiler, always refer to the boiler manufacturers instructions concerning electrical wiring before using the information contained in this leaflet.
Wiring installation instruction (QM1) Simple circuit for for domestic central heating boiler with gravity fed hot water supply N L 1 2 3 220/240V 50 Hz AC main supply neutral E N C D S O E A M M T 4 D boiler Room stat conversation chart pump room stat S D = demand S = satisfy neutral This diagram is correct for mains operated systems. The link wire L-3 must be fitted by the installer.
Important note: It is important that you always refer to the Boiler Manufacturers Instructions concerning electrical wiring before using the information contained in this leaflet. In some cases the Boiler Manufacturers Instructions will contain information regarding removal of certain link wires and will always indicate the fuse rating for the main electrical supply. Combination Boiler Model Chaffoteux Celtix 2.
Saunier Duval SD 625M Vaillant VCW 20/1 T3W Vaillant VCW 25/1 T3W Vaillant VCW Sine 18 T3W Vaillant VCW GB 182 EH Vaillant VCW GB 242 EH Vokera 18/72 MCF Vokera 21/84 MCF Vokera 21/84 TURBO Vokera 18/72 DMCF Vokera 21/84 DMCF Vokera 21/84 DC TURBO Vokera 20/80 RS TURBO Worcester Heatslave Senior 12 Worcester Heatslave Senior 20430 Worcester Heatslave Senior 6 Worcester Heatslave 9-24 RSF Worcester Heatslave 9-24 BF Worcester Heatslave 9-24 OF Worcester Heatslave High Flow BF Worcester Heatslave High Flow OF
Saunier Duval SD625M Always use special 24V thermostat supplied with this boiler, and wire as indicated in boiler instructions substituting time switch terminals A and B for terminals 3 and 4 respectively on QM1.
“TOWERCHRON QM2” Applications (QM2) CH OFF TIMED CONST. OF F CH HW ON HW EN OFF TIMED CONST. • Fully pumped central heating systems using mid position valves, spring return valves or “power open”, “power closed” valves. • Gravity hot water, pumped heating systems with or without motorised valves fitted into the domestic hot water primary circuit. • Unit, as supplied is suitable for gravity hot water systems.
Programming your “TOWERCHRON QM2” Setting time of day OF F Rotate the minute hand of the clock until the arrowhead in clock face aligns with the correct time on the outer dial, i.e. 8 = 8.00 a.m., 14 = 2.00 p.m. ON Setting ON/OFF times Move all tappets between ON and OFF times required to outer position. The minimum switching time is 15 minutes. CH Set any other ON/OFF periods in a similar manner Slide switches (under drop down cover) ON CH OFF OFF TIMED TIMED CONST. CH CONST.
Internal wiring diagram (QM2) • Carry out wiring installation using appropriate diagram as shown. • Plug in unit and secure to the base by tightening fixing screw.
Wiring installation instruction (QM2) Gravity Hot Water / Pumped Heating - System with Room Stat to Control Pump TOWERCHRON QM2 N L 1 2 3 4 ROOMSTAT EARTH NEUTRAL LINE BOILER SWITCHED LIVE REFER TO BOILER MANUFACTURER INSTRUCTIONS N N EARTH NEUTRAL COMMON DEMAND PUMP EARTH NEUTRAL LINE • With the above system, the following combination can not be selected on the slide switches: –– Heating TIMED, hot water off –– Heating CONST, hot water off –– Heating CONST, hot water timed • Fully pumped systems –– Rem
Gravity Hot Water / Pumped Heating System - Two Port Valve in D.H.W. with Room and Cylinder Stats Note: Only valves with “change over“ end switches are suitable.
Fully Pumped System using 2 Port Spring Return 220-240V 50HZ main fused 3 AMP E TOWERCHRON QM2 N L 1 2 3 4 ROOMSTAT EARTH NEUTRAL LINE HEATING VALVE GREEN/YELLOW BLUE BROWN WHITE or GREY BLACK or ORANGE HOT WATER VALVE GREEN/YELLOW BLUE BROWN WHITE or GREY BLACK or ORANGE 18 N CYLINDERSTAT EARTH COMMON SATISFIED DEMAND N N EARTH NEUTRAL COMMON DEMAND N PUMP LINE NEUTRAL EARTH BOILER SWITCHED LIVE REFER TO BOILER MANUFACTURER INSTRUCTIONS Fully Pumped System using 3 Port Mid-Position Valve 220-24
Conversion Chart for different Room / Cylinder Thermostats Cylinder Stats Room Stats TOWER CS1 ACL HTS 2 DRAYTON CS1 HONEYWELL L641 A LANDIS&GYR RAM 21 SWITCHMASTER SCT SUNVIC SA 2451 EN RED BLK YEL E C D S O E A M M T E 1 C 1 1 E 3 2 1 2 2 1 3 2 3 3 2 TOWER SS TOWER RS ACL TS 142 DRAYTON RTE HONEYWELL T 6160B LANDIS&GYR RAD 5 SWITCHMASTER SRT2 SUNVIC TLX2259 E N C O M E 4 1 E 4 1 E 4 1 E 4 1 2 1 4 6 5 1 E 4 3 D E M 2 3 2 2 3 2 3 1 S A T 3 4 2 19
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