IDEAL HP290 - Figure 48. Installer Wiring Connections; Figure 47. Contactor Diagram

Section 4 - Installation
INSTALLATION
47
Installation and Maintenance
Figure 47. Contactor Diagram
4.3.6 Immersion Contactor Diagram
4.3.7 Installer Wiring Connections
241072 A01
TO IMMERSION HEATER
IMMERSION HEATER CONNECTION
REMOVE PRE-FITTED BLUE WIRE FROM CONNECTION A2,
BEFORE WIRING IMMERSION HEATER TO CONNECTION 2.
THEN RECONNECT PRE-FITTED WIRE TO A2.
A1
PE
A2
2
1
4
3
L
N
ZONE 1
ON/OFF
THERMOSTAT
ZONE 2
ON/OFF
THERMOSTAT
DHW
THERMISTOR
15
14
10
9
1
2
3
4
5
6
8
13
11
12
OUTDOOR 1
OUTDOOR 2
IMMERSION
HEATER
N
L
7
HEATING ZONE 2
N
L
HEATING ZONE 1
N
L
3-WAY VALVE
N
L
O/HEAT STAT
L
L
MAINS SUPPLY
N
L
ROOM STAT
N
L
POWER
BACKUP BOILER
sL
L
X/HA
H1
H2
EH
T1
T2
E1
Y/HB
MODBUS
INTERFACE
CH ZONE 2
THERMISTOR
Figure 48. Installer Wiring Connections (refer to Section 4.3.7.1 for description of connections)

before wiring immersion heater to connection 2.
