gledhill BMA 180 HP-DEM Installation & Servicing Instructions Manual page 30

INSTALLATION
BoilerMate A-Class HP-DEM
(internal)
Internal
OWC
White
White OWC
Brown A1
Red A2
A3
Black
Yellow A4
Green A5
Blue B1
Violet B2
White B3
1
1
Mitsubishi Air Source Heat Pump
(external)
External
Outside Weather
Compensation Sensor S7
A1
A2
A3
8 core
A4
signal cable
A5
B1
B2
B3
2
2 3
Elec trical Interconnec tions Between
BoilerMate A-Class HP-DEM and Mitsubishi
Electric Ecodan air source heat pump.
8 metres of 8 core signal cable is provided pre-
terminated and labeled ready to connect to the
Gledhill BoilerMate A-Class HP-DEM appliance
as shown on page 28. This will require to be site
run and connected to the heat pump by the
installer as shown.
If any additional length is required, please
use RS Components: stock code 482 6036 (25
metres) and replace the entire length, DO NOT
JOINT. Maximum length is 30 metres. If using
Modulation
Signal
alternative cable to the above, the individual
cores must be a minimum of 0.5mm
Comfort Cooling
12V/24V
Supply
Status
Signals
External Temperature Compensation
Sensor
This is supplied connected to 10 metres of cable
which is coiled and cable tied to the pipework
at high level in the appliance and will need to
be mounted on an external wall and wired back
to the BoilerMate A-Class HP-DEM appliance
using the cable supplied. The sensor shall
be located in a position which is not unduly
affected by wind/direct sunlight etc. On this
basis a sheltered location on a north facing wall
is recommended.
Warning
When connecting the cable to the external
temperature compensation sensor, ensure the
cable inlet is facing down.
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