PL5
+ve Gnd
Back Light
1 2 3 4 5
Diagram 1 Central Heating Only
PL5
+ve Gnd
Back Light
1 2 3 4 5
Diagram 2 Central Heating with Pump Over run
Cyl Stat
Cyl Stat
C
L
FEED RELAYS
L N E
Mains Input
E
N
L
N/C
L
N/O
E
N
L
N/C
L
N/O
E
N
L
N/C
L
N/O
C
L
Hot Water
Boiler
Central Heating
FEED RELAYS
L N E
Mains Input
E
N
L
N/C
L
N/O
E
N
L
N/C
L
N/O
E
N
L
N/C
L
N/O
Hot Water
Boiler
Central Heating
(A)
(A)
240V~3A
E E N SL BOILER
240V~3A
E E N N SL PL PO BOILER L PUMP
N L PUMP
PL5
PL5
1 2 3 4 5
+ve Gnd
Back Light
Diagram 3 Voltage Free or Combination Boiler
+ve Gnd
Back Light
1 2 3 4 5
Diagram 4 Pumped Heating Gravity Hot Water
Cyl Stat
Cyl Stat
C
L
FEED RELAYS
L N E
Mains Input
E
N
L
N/C
L
N/O
E
N
L
N/C
L
N/O
E
N
L
N/C
L
N/O
C
L
Hot Water
Boiler
Central Heating
FEED RELAYS
L N E
Mains Input
E
N
L
N/C
L
N/O
E
N
L
N/C
L
N/O
E
N
L
N/C
L
N/O
Hot Water
Boiler
Central Heating
(A)
CYLINDER STAT
240V~3A
E N PL
240V~3A
BOILER
1 1 2 1
C 3 1 C
GY B BR
HW VALVE
E E
N SL BOILER N L PUMP
Time Clock Connections
BL R
PL5
+ve Gnd
Back Light
1 2 3 4 5
Diagram 5 Central Heating & Hot Water Y-Plan
PL5
+ve Gnd
Back Light
1 2 3 4 5
Diagram 6 Central Heating & Hot Water Y-Plan + Pump Over run
Cyl Stat
Cyl Stat
C
L
FEED RELAYS
L N E
Mains Input
E
N
L
N/C
L
N/O
E
N
L
N/C
L
N/O
E
N
L
N/C
L
N/O
C
L
Hot Water
Boiler
Central Heating
FEED RELAYS
L N E
Mains Input
E
N
L
N/C
L
N/O
E
N
L
N/C
L
N/O
E
N
L
N/C
L
N/O
Hot Water
Boiler
Central Heating
(A)
(A)
240V~3A
CYLINDER STAT
1 1 2 1 C H 3 S 1 L&G ACL GY B G O W E E N SL BOILER N L PUMP
240V~3A
CYLINDER STAT
1 1 2 1 C H 3 S 1 L&G ACL GY B G O W E E N SL PL PO BOILER N L PUMP
GY GY GY GY
B B B B
G G G G
O W O W O W O W
GY GY GY GY
B B B B
G G G G
O W O W O W O W
BL R
BL R
C HM
C HM
3-PORT VALVE
3-PORT VALVE
PL5
+ve Gnd
Back Light
1 2 3 4 5
Diagram 7 Central Heating & Hot Water S-Plan
PL5
+ve Gnd
Back Light
1 2 3 4 5
Diagram 8 Central Heating & Hot Water S-Plan + Pump Over run
a By-pass Should be Used
Cyl Stat
Cyl Stat
C
L
FEED RELAYS
L N E
Mains Input
E
N
L
N/C
L
N/O
E
N
L
N/C
L
N/O
E
N
L
N/C
L
N/O
C
L
Hot Water
Boiler
Central Heating
FEED RELAYS
L N E
Mains Input
E
N
L
N/C
L
N/O
E
N
L
N/C
L
N/O
E
N
L
N/C
L
N/O
Hot Water
Boiler
Central Heating
(A)
(A)
240V~3A
CYLINDER STAT
1 1 2 1 C H 3 S 1 L&G C HM GY B BR O G
HW VALVE
GY B BR O G
CYLINDER STAT
HTG VALVE
240V~3A
1 1 2 1 C H 3 S 1 L&G ACL GY B BR O G
HW VALVE
HTG VALVE
GY B BR O G
BL R ACL
E E
N SL BOILER N L PUMP
BL R
BOILER E
E
N SL PL PO N L PUMP
C HM