Worcester 12/18 Instruction Manual page 35

8 716 113 389d 30/3/10 14:01
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INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR HEATSLAVE EXTERNAL 12/18-18/25-25/32
8 716 113 389d (03/2010)
Page 35
max max
flue boiler
reset reset
C
max max
flue boiler
reset reset
max max
flue boiler
reset reset
STARTING THE APPLIANCE
Domestic hot water:
1 Set the CH/DHW programmer to OFF.
Fully open a hot water tap.
The burner should be OFF and the circulating
pump ON.
2 Close the hot water tap.
Set the DHW thermostat control (C) to
minimum as shown.
Set the programmer to DHW ON.
The burner should be ON with the circulating
pump to heat the water in the Heatslave
external tank.
When minimum set temperature is reached
the burner and circulating pump will switch
off.
on
service 3 Fully open a hot water tap. The burner
should be OFF and the circulating pump
lockout
ON.The burner will turn ON when the
GREENSTAR HEATSLAVE EXTERNAL
DHW thermostat calls for heat.
Check the water flow rate using a suitable
measuring container;
12/18KW 15 litres/min
18/25kW 18 litres/min*
25/32kW 22 litres/min*
* Manually regulate using the water main
inlet isolating valve on the boiler.
4 Fully close the hot water tap.
Check the burner and circulating pump**
switch off.
**The high limit thermostat may activate
on
pump overrun until the correct
service
temperature is restored.
lockout
GREENSTAR HEATSLAVE EXTERNAL
on
service
lockout
GREENSTAR HEATSLAVE EXTERNAL
STARTING THE APPLIANCE
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