TOWERCHRON QM1 and QM2
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Installation and user instructions |
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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” 7 Internal wiring diagram (QM1) 8 Wiring installation instruction (QM1) 9
“TOWERCHRON QM2” 13
Applications (QM2) 13 Programming your “TOWERCHRON QM2” 14 Internal wiring diagram (QM2) 15 Wiring installation instruction (QM2) 16
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Safety Instructions
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Danger! Risk of electric shock! |
WARNING |
ZZConnection 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.
•If the unit is to be surface wired:
–Remove backplate by slackening fixing screw and separating plate and timeswitch.
–Remove the knock out from the backplate and the timeswitch.
–Screw backplate to wall with counter sunk number 8. (Wood screws using fixing holes provided.)
•For switch mounting:
–Use the centre two holes and fix backplate to box using machine screws.
–To ensure clearence for the down flap, ensure that there is a minimum of 4 cm clearance under the unit when mounted.
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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.
The time on the programmer must be correct. Some types have to be adjusted in spring and autumn at the changes between Greenwich Mean Time and British Summer Time.
You may be able to temporarily adjust the heating programme, for example, ’Override’, ’Advance’ or ’Boost’.These are explained in the manufacturer`s instructions.
The heating will not work if the room thermostat has switched the heating off.And, if you have a hot water cylinder, the water heating will not work if the cylinder thermostat detects that the hot water has reached the correct temperature.
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General installation instructions
Backplate |
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N L 1 2 3 4 |
Terminal |
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Block |
Fixing
Holes 
Earth
Terminal
Cable |
Fixing |
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Knockout |
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Screw |
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The TOWERCHRON QM1 and QM2 are both double insulated so earth protection is not required. However in the backplate a terminal for earth continuity is provided which should be used if earth conductors are present in your cable. Make sure that the earth conductors are sleeved to prevent accidental contact with live parts.
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Specifications
Installation |
double insulated |
Rating |
5 amps (2 amps) at 240 |
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volts 50 hertz |
Fitting |
surface mounted or to a |
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single gang plaster depth |
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socket outlet |
Dimensions |
156 x 85 x 42 |
Maximum ambient |
50° centigrade |
temperature |
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Type 1 action |
Type 1B |
Micro disconnection |
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Pollution protection |
Normal pollution situation |
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“TOWERCHRON QM1” |
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Applications (QM1) |
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• Any simple time switching application |
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TIMED |
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up to the stated rating. |
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CONST. |
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Domestic heating system where both |
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heating and hot water services are |
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OFF |
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required to switch ON and OFF at the |
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ON |
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same time. |
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Controlling a “combi” or “combination |
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boiler”. |
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