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5
System Set Up
5.2.2 Connecting inputs/outputs
Inputs/Outputs
Name
Connector
Item
MC
TB-U/V/W
Motor for compressor
(Mediate Power board)
63H
63H
High Pressure switch
63HS
63HS
High Pressure Sensor
FS
63L
Flow switch (Ambient loop)
TH3
TH3
Thermistor (Ref. liquid temp.)
TH4
TH4
Thermistor (Discharge temp.)
TH7
TH7/6
Thermistor (Outdoor temp.)
TH8
CN6
Thermistor (Heat sink temp.)
TH32
TH32
Thermistor (Ambient loop inlet temp.)
TH33
TH33
Thermistor (Comp. surface temp.)
TH34
TH34
Thermistor (Ambient loop outlet temp.)
LEV-A LEV-A
Linear Expansion Valve
CNM
CNM
Connection for option
6
Commissioning
Pre-commissioning exercises- sanitary/DHW circuit
Initial fill procedure:
Ensure all pipe joints and fittings are tight and secure.
Open the most distant DHW tap/outlet.
Slowly/gradually open the mains water supply to begin filling unit and DHW pipework.
Allow most distant tap to run free and release/purge residual air from installation.
Close tap/outlet to retain fully charged system.
Note: When an immersion heater is fitted, do NOT energise the heater until the DHW tank is full of water. Also do NOT ener-
gise any immersion heater if any sterilisation chemicals remain in the DHW tank as this will cause premature failure of
the heater.
Initial flush procedure:
Energise system to heat-up heat pump unit contents to a temperature of approx. 30 - 40°C.
Flush/drain the water contents to remove any residue/impurities resulting from the installation works. Use the heat pump unit drain
cock to safely discharge the warmed water to drain via a suitable hose.
On completion, close drain cock, re-fill system and resume system commissioning.
1 3
1 2
1
4
1 3
TH33
TH32
TH7/6
TH3
(YE)
(BK)
(RD)
(WH)
1 3
1 3
63L
63H
1
7
(RD)
(YE)
CNF1
(WH)
1
3
CNDC
(PK)
1
7
CN2
(RD)
CNAC
(WH)
CNS
(WH)
3 1
2 1
1 2
TH4
TH34
(WH)
(RD)
1
5
1 3
LEV-A
63HS
(WH)
(WH)
1
14
LED2
LED1
CNM
(WH)
1 2
CN4
(WH)
SV1/CH
SV3/SS
21S4
(GY)
(WH)
(GN)
1 3
1 3
1 3
1 3
CNDM
(WH)
en
46
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