HAMWORTHY HEATING LTD
15
Merley Boiler Sequence Controller
500001210/D
2.9 Programmable Room Unit
-
QAA 75.611
•
The room unit should be located in the main living room while giving consideration to the following points:
•
The place of installation should be chosen so that the sensor can capture the room temperature as accu-
rately as possible without getting adversely affected by direct solar radiation or other heat or refrigeration
sources (about 1.5 meters above the floor)
•
In the case of wall mounting, there must be sufficient clearance above the unit, enabling it to be fitted and
removed
When the unit is removed from its base, power is
cut off so that the unit is out of operation.
Note:
the device takes a 12V power supply from
the
RVS to operate the back
-
lit lcd function.
2.9.1 Mounting Location
•
The controller must not be exposed to dripping water
23
59
Z
25
23
59
Z
20
23
59
Z
26
23
59
Z
24
2
35
9
Z
2
1
2.9.2 Electrical Connections
Terminal
Name
QAA75 611
1
CL+
BSB data
2
CL
-
BSB ground
3
G+
Power supply DC 12 V
23
59
Z
50
4,2
56
60
56
60
100
80
42
18
5
2359Z12
10
0
82
2.9.3 Dimensions and Drilling