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AMBIENT AIR COMPENSATION
QAC22 / QAC32 Mounting and Installation
Mounting Position
Mounting instructions are printed on the packaging however the following
points should be noted
•
The sensor is to be mounted externally, preferably at the mid point of
the house or building or heating zone, but at least 2.5 m above the
ground
The sensor must not be fitted at the following locations:
•
Above windows, doors, air extracts or other heat sources
•
Below balconies or the eave of the roof
To prevent measurement errors the sensor should:
•
Be sealed.
•
Not painted over
Connection
The ambient air sensor is connected to terminals B9 and M9 on the RWF40 thermostat
Programming
When utilising outdoor compensation it is necessary to reprogram some of the parameters within the
RWF 40 controller to recognise the outdoor sensor.
The table below details the parameters that require alteration and the new settings required.
Parameter
C111
C112
SPL
SPH
AL
HYSt
H
NOTE: Prior to altering the factory settings, advice should be sought on the function of parameters,
other than those listed above, to prevent malfunction of the RWF40 controller.
INSTALLLATION
Original Setting
9000
0000
0
95
0
0
0
25
New Setting
9030
C010
55
85
24
2
4
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