Riello NXHM - Page 36

98
ENGLISH
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P_c N
9
21
PUMP_c
CONTROL SIGNAL
OUTPUT
(For zone 2 pump)
P_o N
10
PUMP_o
CONTROL SIGNAL
OUTPUT
(For zone 1 pump or
outside circulating pump)
22
P_s
N
PUMP_s
CONTROL SIGNAL
OUTPUT
(For solar pump)
11
23
P_d
N
12
PUMP_d
CONTROL SIGNAL
OUTPUT
(For DHW tank
circulating pump)
24
Voltage 220-240VAC
Maximum running current (A) 0,2
Wiring size (mm²) 0,75
Control port signal type Type 2
Procedure
 Connect the cable to the appropriate terminals as shown in the picture.
 Fix the cable reliably.
5. For tank booster heater
N
13
16
TBH
TANK BOOST HEATER
CONTROL SIGNAL OUTPUT
Voltage 220-240VAC
Maximum running current (A) 0,2
Wiring size (mm²) 0,75
Control port signal type Type 2
Connection of the booster heater cable depends on the application. Only when the domestic hot water tank is installed will this wiring be needed.
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power to the booster heater.
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Procedure
 Connect the cable to the appropriate terminals as shown in the picture.
 Fix the cable with cable ties to the cable tie mountings to ensure stress relief.
6. For external backup heater kit (optional)
IBH1 N
14
16
IBH1
CONTROL SIGNAL
OUTPUT
Voltage 220-240VAC
Maximum running current (A) 0,2
Wiring size (mm²) 0,75
Control port signal type Type 2
7. For antifreeze e-heating tape (external)
HT N
25
29
Heating
CONTROL SIGNAL
OUTPUT
Voltage 220-240VAC
Maximum running current (A) 0,2
Wiring size (mm²) 0,75
Control port signal type Type 2
8. For unit running state output
R2 R1
26
30
Runnig state
CONTROL SIGNAL
OUTPUT
Voltage 220-240VAC
Maximum running current (A) 0,2
Wiring size (mm²) 0,75
Control port signal type Type 2