6.8.9
Connecting the outdoor unit bus
1. Connect the outdoor unit bus between the S2 and S3 terminals on the
X23 connector in the indoor unit's EHC–05 central unit PCB.
2. Position the SW8–3 switch (except for AWHP 4.5 MR) for the outdoor
unit PCB to ON.
Danger
Do not connect anything to S1.
6.8.10 Fitting the outdoor sensor
Plugs diameter 4 mm/drill diameter 6 mm
1. Choose a recommended location for the outdoor sensor.
2. Put the 2 plugs in place, delivered with the sensor.
3. Secure the sensor using the screws provided (diameter 4 mm).
4. Connect the cable to the outdoor temperature sensor.
Recommended positions
Place the outside sensor in a position that covers the following
characteristics:
On a façade of the area to be heated, on the north if possible.
Half way up the wall of the area to be heated.
Under the influence of changes in the weather.
Protected from direct sunlight.
Easy to access.
Fig.47
MW
-1001220-1
X23
S1
S2 S3
MW
-1001220-1
1
S3
S3
S2
S2
3
1 2
SW8
2
Fig.48
MW-8800N003-6
2
3
4
6 Installation
7762758 - v05 - 19082020
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