8.0
Commissioning the Boiler
15
8.1
Commissioning the Boiler
1. Reference should be made to BS 5449
Section 5 when commissioning the boiler.
2. Open the water supply to the boiler.
3. The system must be flushed in accordance
with BS 7593, Section 5.1 of these instructions
and the flushing agent manufacturers
instructions.
4. Turn the gas supply on and purge the system
according to BS 6891.
5. Test for gas soundness.
8.2
Checking the Burner Pressure
1. Slacken the pressure test point sealing screw
and connect a pressure gauge (Fig. 19).
2. Turn on the gas and electrical supplies to the
boiler and ensure that all external controls are
calling for heat.
3. Set the temperature control to maximum
(Fig. 18).
4. Check the burner setting pressure (see
Section 4.0 “Technical Data”).
5. If necessary adjust the pressure by removing
the gas valve governor cover and turning the
screw to achieve the required pressure (Fig. 20).
5. Turn the boiler off and reassemble in reverse
order. Tighten the pressure test point sealing
screw (Fig. 19).
Thermostat Knob
Fig. 19
Fig. 18
Fig. 20
LH View of Gas
Valve
Governor Cover Screw
Inlet Pressure Test Point
Burner Pressure Test Point
