These grommets are intended for
low voltage electrical wires (e.g.
NTC sensors, etc.)
These grommets are intended for
high voltage electrical wires (e.g.
boiler and pump power supply)
HeatMaster 25 C: A1003474 - 664Y7000 • B
en
22
EN
FR
NL
ES
IT
DE
PL
RU
TECHNICAL CHARACTERISTICS
ELECTRICAL CHARACTERISTICS HEATMASTER
®
25 C
230 VAC OUTPUT !
230 VAC OUTPUT !
CABLE ROUTING
HeatMaster 25C
Main Characteristics
Rated voltage
V~
230
Rated frequency
Hz
50
Electrical consumption
Max.
W
95
Min.
W
19
Electrical consumption at
30% load
W
24
Electrical consumption in
standby
W
3
Rated current (Fuse)
A
16
Class
IP 20
Key
1.
230 V power supply plug
2.
Ground
3.
ON/OFF master switch
4.
Gas valve rectified
5.
Burner power supply
6.
Terminal block for optional items
: Alarm (ERR)
: DHW circuit circulator pump (DHW)
7.
Terminal block for optional items:
: Pump (P3 and P4 terminals)
: Flame terminal (versatile connection according to configuration)
8.
Modulating pump PWM
9.
Burner PWM plug
10.
NTC5 flue gas temperature sensor
11.
NTC2 return sensor
12.
NTC1 supply sensor
13.
NTC - Low temperature circuit
For low temp circuit operation, black wires from X3, terminals 1 & 6 must be routed to
X20, terminals 3 & 4.
14.
High limit switch
15.
Low water pressure sensor
16.
PCB (Display)
17.
ACVMax programmation plug
18.
A & B Modbus (option)
19.
NTC3 DHW sensor
20.
NTC4 outdoor temperature sensor (option)
21.
Room thermostat 1 (option)
22.
0-10 Volt (option)
23.
Room thermostat 2 (option)
24.
Connection for interface control unit
25.
Ignition and ionization cable
26.
5AT slow-blow fuse (3x) for internal and optional circuits*
* 5AT slow-blow fuse (2x) for internal circuits and connection of CH, DHW and Flame 5AT slow-blow fuse (1x) for connection of
Alarm, P3 and P4 (connector P14)
2 spare 5AT slow-blow fuses are located on the back side of the electrical box, for fuse replacement, if required.
