STARTING THE APPLIANCE
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR HEATSLAVE EXTERNAL 12/18-18/25-25/32
8 716 113 389b (09/07)
34
C
O
MMI
S
S
IO
N
IN
G
GREENSTAR
HEATSLAVE EXTERNAL
max
flue
reset
boiler
reset
max
lockout
on
service
GREENSTAR
HEATSLAVE EXTERNAL
max
flue
reset
boiler
reset
max
lockout
on
service
GREENSTAR
HEATSLAVE EXTERNAL
max
flue
reset
boiler
reset
max
lockout
on
service
GREENSTAR
HEATSLAVE EXTERNAL
max
flue
reset
boiler
reset
max
lockout
on
service
2
1
3
4
E
D
C
D
C
D
C
E
E
E
STARTING THE APPLIANCE
Central heating:
1
Open all radiator valves.
Set room thermostat to maximum.
Set programmer to ON for CH.
Turn the DHW thermostat control (C) fully
anti-clockwise.
Turn the CH thermostat control (D) to max.
The burner should be ON with the circulating
pump. The diverter valve (E) should open to
port B for CH.
Ensure all radiators are heating up evenly
and balance the system to the temperature
difference required across the heating flow
and return relevant to the heating load.
2
Set the room thermostat to minimum.
The burner and circulating pump should be
off. The diverter valve (E) should return to
port A for DHW (default).
Domestic hot water & central heating:
3
Set the room thermostat to maximum.
Set the programmer to ON for DHW & CH.
Turn the DHW thermostat control (C) fully
anti-clockwise.
Set the CH thermostat control (D) to max.
The burner should be ON with the circulating
pump. The diverter valve (E) should open to
port B for CH.
4
Set the DHW thermostat control (C) to max.
The diverter valve (E) should move to port A
and divert the flow to the Heatslave tank.
