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GENERAL MAINTENANCE
All equipment must be properly maintained in order to provide optimum performance over time. Faulty maintenance can result in
the cancellation of the product guaranty. Depending on the products, maintenance operations consist in the cleaning of filters (air,
water), internal and external exchangers, casings, and the cleaning and protection of condensate tanks. Treating odours and the
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disinfection of room surfaces and volumes also contributes to the cleanliness of the air breathed by users.
• Perform the following operations at least once per year (the frequency of operations depends on the installation and
operating conditions):
- Check the composition and condition of the coolant.
- Check operating points and setpoints.
- Check the safety devices.
- Dusting of electrical boxes.
- Ensure that all electrical connections are properly tight.
- Check the ground connections.
- Check the hydraulic system (cleaning of the filter, water quality, purge, flowrate, pressure etc.).
7 - ELECTRICAL DIAGRAM
A1
Control board, zone 1
A2
Control board, zone 2
EV1
Control valve, zone 1
EV2
Control valve, zone 2
M1
Circulator, zone 1
M2
Circulator, zone 2
Q1
Circuit breaker, zone 1
Q2
Circuit breaker, zone 2
Power supply
230V / 1 / 50
PE
N
Ph
PE
Q2
XA
11
XA
N
ELECTRICAL DIAGRAM - KH2ZPC
P1
P2
A4 C
S4 C S5
12
XA
Z1
U
Z2
M2
A2
1
~
Pump
N U
Y1 N Y2
+ -
EV2
BUS
Component symbols
S4
Water temperature sensor (outgoing line, zone 1)
S41
Water temperature sensor (outgoing line, zone 2)
S5
Temperature ambiance sensor (zone 1)
Accessory
S51
Temperature ambiance sensor (zone 2)
12
Q1
11
Water probe
S41
S51
Ambiance
sensor
12
11
8
10 05 807 - 03
P1
P2
A4 C
S4 C S5
1
2
XA
XA
Z1
N
U
Z2
M1
A1
~
1
Pump
N U
Y1 N Y2
+ -
EV1
12
11
Water probe
S4
S5
Ambiance
sensor
(accessory)
BUS
12
11
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