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7. Electrical installation
Installer reference guide / Mono tank integrated type
117
To connect external inputs for zone control via thermostats (B19/B20/B21/B22/B23/B24)
• Make sure to wire the thermostats for the zone control to the correct terminals (zone1/ zone2, cooling / heating).
• Make sure the external thermostat is rated for 220-240V~ input.
• The input signal is a switched Live (L). Zone2 has a priority over Zone1. The mode of operation (cooling or heating) will
be determined by Zone2 (when two signals are simultaneously applied).
B2
B6
B10
B14
B18
B22
B4
B8
B12
B16
B20
B24
B26
B1
B5
B9
B13
B17
B21
B3
B7
B11
B15
B19
B23
B25
THERMOSTAT01_COOLING (Z1)
THERMOSTAT01_HEATING (Z1)
THERMOSTAT02_COOLING (Z2)
THERMOSTAT02_HEATING (Z2)
Neutral (N)
Live (L)
N L C1 H1
N L C2 H2
THERMOSTAT 2
THERMOSTAT 1
Description
No. of wires
Max. current
Thickness
Remark
Room Thermostat
4
22mA
>0.75mm2, H05RN-F or
HO7RH-F
Field supply
(220-240V~, Input)
CAUTION
When both cooling and heating input signals are applied for a single zone, the product will not operate.