
Supplied By www.heating spares.co Tel. 0161 620 6677
20
221473B
JUNCTION
BOX
3 AMP
FUSE
L
N
230V~50Hz
PERMANENT MAINS
SUPPLY
230V~50Hz
ROOM STAT.
230V~50Hz
FROST STAT.
TO BOILER
RED LINK.
REMOVE WHEN
CONNECTING
SYSTEM CONTROLS
5 POLE CONNECTOR ON
MOUNTING FRAME
230V~50Hz
POTENTIAL
FROST STAT.
230V~50Hz
POTENTIAL
ROOM STAT.
(3)
(L)
(N)
(2)
(1)
JUNCTION
BOX
3 AMP
FUSE
L
N
230V~50Hz
PERMANENT MAINS
SUPPLY
230V~50Hz
ROOM STAT. USED AS LINK
230V~50Hz
FROST STAT.
TO BOILER
RED LINK.
REMOVE WHEN
CONNECTING
SYSTEM CONTROLS
5 POLE CONNECTOR ON
MOUNTING FRAME
MAINS
POTENTIAL
FROST STAT.
MAINS
POTENTIAL
ROOM STAT.
(3)
(L)
(N)
(2)
(1)
JUNCTION
BOX
3 AMP
FUSE
L
N
230V~50Hz
PERMANENT MAINS
SUPPLY
230V~50Hz
FROST STAT.
NO ROOM STAT.
TO BOILER
RED
LINK
5 POLE CONNECTOR ON
MOUNTING FRAME
MAINS
POTENTIAL
FROST STAT.
(3)
(L)
(N)
(2)
(1)
3 AMP
FUSE
L
N
230V~50Hz
PERMANENT MAINS
SUPPLY
POTENTIAL
FREE ROOM STAT. NO FROST STAT.
TO BOILER
RED LINK.
REMOVE WHEN
CONNECTING
SYSTEM CONTROLS
5 POLE CONNECTOR ON
MOUNTING FRAME
POTENTIAL FREE
ROOM STAT.
(3)
(L)
(N)
(2)
(1)
DOUBLE
POLE
ISOLATOR
JUNCTION
BOX
3 AMP
FUSE
L
N
230V~50Hz
PERMANENT MAINS
SUPPLY
230V~50Hz ROOM STAT. NO FROST STAT.
TO BOILER
RED LINK.
REMOVE WHEN
CONNECTING
SYSTEM CONTROLS
5 POLE CONNECTOR ON
MOUNTING FRAME
MAINS POTENTIAL
ROOM STAT.
(3)
(L)
(N)
(2)
(1)
5 POLE CONNECTOR ON
MOUNTING FRAME
TO BOILER
RED LINK.
REMOVE WHEN
CONNECTING ANY
HEATING SYSTEM
CONTROLS
TIME
CONTROL
CLOCK
SWITCH
CONTACTS
(3) (L)
(N)
(E)
(2)
(1)
JUNCTION
BOX
3 AMP
FUSE
ROOM
THERMOSTAT
FROST
THERMOSTAT
L
N
E
230V~50Hz
PERMANENT
MAINS SUPPLY
ELECTRICITY SUPPLY CONNECTIONS
DOUBLE
POLE
ISOLATOR
DOUBLE
POLE
ISOLATOR
DOUBLE
POLE
ISOLATOR
DOUBLE
POLE
ISOLATOR
DOUBLE
POLE
ISOLATOR
(E)
(E)
(E)
(E)
(E)
E
E
E
E
E
Diagram 9.2
EXTERNAL CLOCK
INTEGRAL CLOCK
INTEGRAL CLOCK
INTEGRAL CLOCK
INTEGRAL CLOCK
INTEGRAL CLOCK
9 Electrical Connections
5217