Operating instructions

Pre-commissioning
Ensure that the system has been adequately flushed.
Purge gas supply of air and test for soundness.
Carry out final electrical tests to ensure the correct polarity and
earthing continuity.
Electrical Adjustments
There are three adjustments that can be made:
1. Room thermostat options
2. Pump speed
3. Burner operating modes :
1. Room thermostat options
To gain access to the setting switch (1 fig. 13) pivot forward the
electrical box cover and remove the cover (B fig. 11)
- move the switch to the left - (factory setting). When room
thermostat is satisfied the burner switches off and the pump over
runs for 3 min.
- move switch to the right - When room thermostat is satisfied the
burner switches off and the pump continues to run until the main
selector is turned from a heating position.
2. Pump Speed Adjustment
- move switch to the left (marked GV) - pump on high speed (factory
setting)
- move switch to the right (marked PV) - pump on low speed for use
on small systems