7219717 - 02 (08/15)
EcoBlue Heat
39
Installation
6
6.2
Electrical Connections
Y Plan
Diverter
Valve
Cylinder
Stat
Room
Stat
Boiler
Pump
Timer
230V
50Hz
L N E
L
N
CH on
HW on
HW off
L
N E
L
N
E
b
g/y
w
o
gr
1
C 2
g/y
S Plan
Valve
Cylinder
Stat
Room
Stat
Boiler
Pump
Timer
230V
50Hz
L N E
L
N
CH on
HW on
L
N E
L
N
E
Motor
S Plan
Valve
Motor
o
o
gr
b
g/y
b
gr
br
br
Y Plan, Room Thermostat System, CH Interlocked By Room
Thermostat
At least the Radiator(s) near the Room Thermostat not TRV’d
Pump run from Switched Live
S Plan, Room Thermostat System, CH Interlocked By Room
Thermostat
At least the Radiator(s) near the Room Thermostat not TRV’d
Pump run from Switched Live
Key to colours
b - Blue
br - Brown
w - White
o - Orange
gr - Grey
g/y - Green/Yellow
Fig. 32
6.2.1 Electrical Connections of the Appliance
1. See Section 5.2.2. for details of the electrical supply. 1.3
metres of 3 core cable are supplied connected to the boiler.
2. Switched live must be connected to the brown (live) wire of
the 3 core cable.
6.2.2 Connecting External Devices
1. System Controls - This boiler operates on a switched live only.
2. To comply with Part L1 of the Building Regulations the heating
system into which the boiler is installed should include the
following:
a)
Zone Controls
b)
Timing Controls
c)
Boiler Control Interlocks (Room & Cylinder
Thermostats)
3. Such a system needs to be fully pumped and must provide
independent temperature and time control to both the heating
and hot water circuits.
4. Connection diagrams for Y and S plan systems are shown.
3 Core Cable Connection