TFC Group Towerchron QM2 User Manual
TOWERCHRON QM1 and QM2
EN
Installation and user instructions
OFF
ON
2
Table of Contents
Safety Instructions �������������������������������������������������������������3
What is a programmer? �����������������������������������������������������4
General installation instructions ����������������������������������������� 5
Specications ��������������������������������������������������������������������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
2
Safety Instructions
Danger! Risk of electric shock!
WARNING
• Installation must be carried out by a qualied 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 xed wiring only�
• If the unit is to be surface wired:
– Remove backplate by slackening xing 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 xing holes provided�)
• For switch mounting:
– Use the centre two holes and x backplate to box using machine screws�
– To ensure clearence for the down ap, ensure that there is a minimum of 4 cm clearance under the
unit when mounted�
Connection and mounting must be performed by a professional electrician!
EN
3
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�
4
General installation instructions
Backplate
Fixing
Screw
Terminal
Block
Earth
Terminal
N
L 1 2 3 4
Fixing
Holes
Cable
Knockout
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�
GBEN
Specications
Installation double insulated
Rating 5 amps (2 amps) at 240
Fitting surface mounted or to a
Dimensions 156 x 85 x 42
Maximum ambient
temperature
Type 1 action
Micro disconnection
Pollution protection Normal pollution situation
volts 50 hertz
single gang plaster depth
socket outlet
50° centigrade
Type 1B
5
“TOWERCHRON QM1”
OFF
ON
6
Applications (QM1)
• Any simple time switching application
TIMED
OFF
CONST.
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”�
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