Installation - Immersion Heater Electrical Supply; Immersion Heater Wiring - Ecodan 150 Standard Installation And Servicing Instructions

INSTALLATION - IMMERSION HEATER ELECTRICAL SUPPLY

The pre-plumbed cylinder units are supplied fitted with an immersion heater which can be used to supplement the Air Source
Heat Pump heating input. The immersion heater is located within the controls housing. Refer to Fig 21 below for details of wiring
of the immersion heater. The mains supply circuit to the immersion heater must be protected by a suitable fuse and
double pole isolating switch with a contact separation of at least 3mm in both poles. THE IMMERSION HEATER MUST
BE EARTHED.The supply cable for the immersion heater must be aminimum of 1.5mm
DO NOT BYPASS THE THERMAL CUT-OUT IN ANY CIRCUMSTANCES
Fig 21 - Immersion heater wiring
32
FTC5 CONTROLLER
ORANGE
TO PLUG REFERENCE
CNIH ORN ON FTC-5
ORANGE
PCB
IMMERSION
HEATER TERMINAL
HOUSING
THERMAL
CUT-OUT
A
EARTH SCREW ON FTC-5
CONTROLLER BACKPLATE
1 3
ECB
2 4
RED
BLUE
1/L1 3/L2 5/L3 A1
IHC
2/T1 4/T2 6/T3 A2
BROWN BLUE GREEN / YELLOW
B
3 core HO5 VV-F sheathed.
2
GREEN / YELLOW
BROWN
BLUE
IMMERSION HEATER
MAINS SUPPLY CABLE
1.5mm 2 3 CORE
HO5 VV-F CABLE
EARTH
CONNECTION