Worcester Greenstar Heatslave 12/18 Instruction Manual page 34

8 716 106 252f 30/3/10 12:56
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STARTING THE APPLIANCE
Page 34
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INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR HEATSLAVE 12/18-18/25-25/32
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
tank.
When the minimum set temperature is
reached the burner and circulating pump
will switch off.
3 Fully open a hot water tap.
The burner should be OFF and the circulating
pump ON. The burner will turn ON when
the 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
pump overrun until the correct boiler
temperature is restored.
8 716 106 252f (03/2010)