Grasslin Towerchron QM1 Guide

Installation and user instructions
EN
TOWERCHRON QM1 and QM2
2
ON
OFF
http://waterheatertimer.org/Intermatic-timers-and-manuals.html#Talento-400

2
Safety Instructions �������������������������������������������������������������3
What is a programmer? �����������������������������������������������������4
General installation instructions �����������������������������������������5
Specications ��������������������������������������������������������������������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
Table of Contents

EN 3
Safety Instructions
• Installation must be carried out by a qualied 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�
Danger! Risk of electric shock!
 Connection and mounting must be performed by a professional electrician!
WARNING

4
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�

GBEN 5
Specications
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
Type 1 action
Micro disconnection
Type 1B
Pollution protection Normal pollution situation
General installation instructions
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�
N
Fixing
Holes
Cable
Knockout Fixing
Screw
Earth
Terminal
Terminal
Block
Backplate
L1234

6
“TOWERCHRON QM1”
Applications (QM1)
• 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”�
ON
OFF
OFF TIMED CONST.

EN 7
Programming your “TOWERCHRON QM1”
Setting time of day
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�
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
Slide switches (under drop down cover)
Pull top edge of drop down cover to gain access to slide switch�
The slide switch provide following functions:
– OFF service off completely
– TIMED service comes on between ON and OFF periods as set
on tappets on clock face
– CONST� service is on continuously
ON
OFF
OFF TIMED CONST.
OFFON
ON
OFF

8
Internal wiring diagram (QM1)
N
=~
L
OFF ON
1 2 3 4
• 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 leaet� In some cases the boilers manufacturers instructions will contain information regarding
removal of certain link wires and will always indicate the fuse rating for the mains electrical supply�
• Plug in unit and secure to the base by tightening xing screw�

EN 9
Simple circuit for for domestic central heating
boiler with gravity fed hot water supply
This diagram is correct for mains operated
systems� The link wire L-3 must be tted by the
installer�
TOWERCHRON QM1 is ideally suited for controlling combination boilers� The following basic circuit
diagrams apply for the range indicated�
Room stat conversation chart
Wiring installation instruction (QM1)
N L
D S
neutral
room stat
D = demand
S = satisfy
neutral
220/240V
50 Hz AC
main supply
boiler pump
1 2 3 4
TOWER SS
E
E
N
4
C
O
M
1
D
E
M
2
S
A
T
TOWER SSTRS E 4 1 3
ACL TS 142 E 4 1 2
DRAYTON RTE E 4 1 2 3
HONEYWELL T 6160B 2 1 3 4
LANDIS&GYR RAD 5 4 6 2
SWITCHMASTER SRT2 5 1 3 2
SUNVIC TLX2259 E 4 3 1

10
It is important that you always refer to
the Boiler Manufacturers Instructions
concerning electrical wiring before using
the information contained in this leaet�
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�
Important note:
Combination Boiler Model
Chaffoteux Celtix 2�20 OFF N PH 7 6
FIM Leblanc GVM 420 see special circuit
Glowworm Fuelsaver N L 8 7
Ravenheat N L C D
Saunier Duval SD 620 F N L 2 3
Saunier Duval SD 123C N L 2 1
Saunier Duval SD 235C N L 2 1
Saunier Duval SD 135C N L 2 1
N
D S
room stat
D = demand
S = satisfy
QM1 Terminals
220-240V AC
50 Hz
FUSED
SUPPLY
L 1 2 3 4

EN 11
Boiler Terminal Numbers
Saunier Duval SD 625M see special circuit
Vaillant VCW 20/1 T3W 1MP 2R 3 4
Vaillant VCW 25/1 T3W 1MP 2R 3 4
Vaillant VCW Sine 18 T3W 1MP
N
2R
L
3 4
Vaillant VCW GB 182 EH 1 2 3 4
Vaillant VCW GB 242 EH 1 2 3 4
Vokera 18/72 MCF N L 4 5
Vokera 21/84 MCF N L 4 5
Vokera 21/84 TURBO N L 4 5
Vokera 18/72 DMCF N L 3 4
Vokera 21/84 DMCF N L 3 4
Vokera 21/84 DC TURBO N L 3 4
Vokera 20/80 RS TURBO N L 3 4
Worcester Heatslave Senior 12 N L 2 4
Worcester Heatslave Senior 20430 N L 2 4
Worcester Heatslave Senior 6 N L 2 6
Worcester Heatslave 9-24 RSF N L 1 2
Worcester Heatslave 9-24 BF N L 1 2
Worcester Heatslave 9-24 OF N L 1 2
Worcester Heatslave High Flow BF N L 2 2
Worcester Heatslave High Flow OF N L 2 3

12
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�
Saunier Duval SD625M
Elm Leblanc GVM 420Boiler with timeswitch and room thermostat
N
D
COM�
S
room stat
D = demand
S = satisfy
COM = common
N
boiler terminals
L
50 Hz AC
220/240V
main supply
1L 2 3 4
240V 3 AMP
fused supply
240V
3 AMP
fused
supply
frost protection
thermostat (if required)
timeswitch
1
6
3
4
2
5
N
E
L
E NLBA
C
K
D H
J
thermostat
ground
boiler connection box

EN 13
“TOWERCHRON QM2”
Applications (QM2)
• 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 tted into the domestic hot
water primary circuit�
• Unit, as supplied is suitable for
gravity hot water systems� For use on
pumped primary systems, separate
the backplate from the unit by
slackening the securing screw and
remove the red pin in the back of the
programmers chassis�
ON
OFF
OFF
CH
CH
HW
HW
TIMED CONST.
OFF TIMED CONST.

14
Setting time of day
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�
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
Slide switches (under drop down cover)
Pull top edge of drop down cover to gain access to slide switches�
Two switches are provided, one for heating, the other for hot water�
Depending on system installed, each switch provides following
functions:
– OFF service off completely
– TIMED service comes on between ON and OFF periods as set
on tappets on clock face
– CONST� service is on continuously
Programming your “TOWERCHRON QM2”
ON
OFF
OFF
CH
CH
HW
HW
TIMED CONST.
OFF TIMED CONST.
ON
OFF
OFF
CH
CH
HW
HW
TIMED CONST.
OFF TIMED CONST.
OFFON
ON
OFF

EN 15
Internal wiring diagram (QM2)
N L
HW
OFF
CH
OFF
HW
ON
CH
ON
1 2 3 4
220/240V
AC 50 Hz
fused 3A
• Carry out wiring installation using appropriate diagram
as shown�
• Plug in unit and secure to the base by tightening xing
screw�

16
Wiring installation instruction (QM2)
Gravity Hot Water / Pumped Heating - System with Room Stat to Control Pump
The following wiring diagrams are schematic only (for clarity the earth and neutral connections are
omitted)� We suggest when wiring systems a suitable wiring centre is used (the Tower Controls wiring
centre is purpose made and gives full information for wiring this programmer into systems using
compatible equipment)�
TOWERCHRON QM2
EARTH
NEUTRAL
LINE
BOILER
ROOMSTAT
PUMP
EARTH
NEUTRAL
COMMON
DEMAND
SWITCHED LIVE
REFER TO BOILER
MANUFACTURER
INSTRUCTIONS
EARTH
NEUTRAL
LINE
N L 1 2 3 4
N
N
• 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
– Remove red pin (see applications
TOWERCHRON QM2)

EN 17
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�
TOWERCHRON QM2
EARTH
NEUTRAL
LINE
CYLINDER STAT
VALVE
ROOMSTAT
PUMP
BOILER
EARTH
NEUTRAL
COMMON
DEMAND
EARTH
COMMON
DEMAND
GREEN/YELLOW
BLUE
BROWN
GREY
WHITE
ORANGE
EARTH
NEUTRAL
LINE
SWITCHED LIVE
REFER TO BOILER
MANUFACTURER
N L 1 2 3 4
N
N
N

18
Fully Pumped System using 2 Port Spring
Return
Fully Pumped System using 3 Port
Mid-Position Valve
TOWERCHRON QM2
EARTH
NEUTRAL
LINE
HEATING VALVE
HOT WATER VALVE
ROOMSTAT
CYLINDERSTAT
PUMP
BOILER
EARTH
NEUTRAL
COMMON
DEMAND
GREEN/YELLOW
BLUE
BROWN
WHITE or GREY
BLACK or ORANGE
GREEN/YELLOW
BLUE
BROWN
WHITE or GREY
BLACK or ORANGE
EARTH
COMMON
SATISFIED
DEMAND
LINE
NEUTRAL
EARTH
SWITCHED LIVE
REFER TO BOILER
MANUFACTURER
INSTRUCTIONS
N
E
220-240V
50HZ
main fused
3 AMP
L1234
N
N
N
N
TOWERCHRON QM2
EARTH
NEUTRAL
LINE
MID-POSITION VALVE *
ROOMSTAT
CYLINDERSTAT
PUMP
BOILER
EARTH
NEUTRAL
COMMON
DEMAND
GREEN/YELLOW
BLUE
WHITE or BROWN
GREY
ORANGE
EARTH
COMMON
SATISFIED
DEMAND
LINE
NEUTRAL
EARTH
SWITCHED LIVE
REFER TO BOILER
MANUFACTURER
INSTRUCTIONS
N
E
220-240V
50HZ
main fused
3 AMP
L 1 2 3 4
N
N
N
* TOWER MP322C
ACL 697B340
DRAYTON FLOW SHARE 2
HONEYWELL V4073A
LANDIS & GYR SK 3L
SUN VIC SD 1701

EN 19
Conversion Chart for different Room / Cylinder Thermostats
Cylinder Stats Room Stats
E C
O
M
D
E
M
S
A
T
TOWER CS1
RED
BLK
YEL
ACL HTS 2
DRAYTON CS1 E 1 2 3
HONEYWELL L641 A C 1 2
LANDIS&GYR RAM 21 1 2 3
SWITCHMASTER SCT 1 2 3
SUNVIC SA 2451 E 3 1 2
E N C
O
M
D
E
M
S
A
T
TOWER SS E 4 1 2
TOWER RS E 4 1 3
ACL TS 142 E 4 1 2
DRAYTON RTE E 4 1 2 3
HONEYWELL T 6160B 2 1 3 4
LANDIS&GYR RAD 5 4 6 2 2
SWITCHMASTER SRT2 5 1 3
SUNVIC TLX2259 E 4 3 1

Grässlin GmbH
Bundesstraße 36
D-78112 St� Georgen
Germany
Phone: [phone] / 933-0
Fax: [phone] / 933-240
www�graesslin�de
info@graesslin�de
80�10�0791�7/07/11/03 - 11/0036