Potterton Prorile Prima 30e Installation And Servicing Instructions page 18

Open Vented System
Remove the pump and flush out the system thoroughly with
cold water. Refit the pump. Fill and vent the system.
Examine for leaks.
Sealed Systems
NOTE:
The system can be filled using a sealed system filler pump
with a break tank or by any other method approved by the
Local Water Authority. Refer to 'THE SYSTEM' section Page 8
in these instructions, also BS6798 1987.
Remove pump and flush out the system thoroughly with cold
water. Refit the pump. Fill and vent the system until the
pressure gauge registers 1.5 bar (21.5 lbf/in
leaks. Raise the pressure until the safety valve lifts. This
should occur within + 0.3 bar of the preset lift pressure of 3
bar. Release water to attain the correct cold fill pressure, and
set the indicator on the water gauge to this value.
All Systems
The whole of the gas installation including the meter should be
inspected and tested for soundness and purged in accordance
with the recommendations of
BS 6891.
Test pilot unions for gas soundness as follows:- Turn boiler
thermostat to the 'O' position.
Unplug the gas control valve supply lead from the control box
and plug it into the test socket adjacent to the boiler thermostat
knob, See FIG. 23.
Turn on gas at the gas service cock.
Ensure that the time control if fitted is in an ON condition, and
that the room and/or cylinder thermostats where fitted are set
to high temperatures.
Switch on the external electricity supply to the boiler.
Gas will flow to the pilot only. It will not be ignited as the
ignition system is de-energised.
Using a leak detection fluid, check pilot unions for gas
soundness.
Turn off the external electricity supply and gas service cock.
Remove gas control valve plug from the test socket and refit
the plug into the socket on the left hand side of the control box.
See FIG. 23.
SETTING AND CHECKING OF CONTROLS
With the controls cover removed.
Fit a pressure gauge to the pressure test nipple in burner
supply pipe. See FIG. 2.
Turn on the boiler thermostat and ensure that the main burner
is alight. Check that the burner pressure is in accordance with
values stated under TECHNICAL DATA.
The burner pressure is set to the maximum Output at the
factory.
COMMISSIONING - Page 18
Refit the combustion chamber front panel.
Fit the case door into position by lifting it onto the top
hinge brackets and secure it with the lower two fixing screws.
First Lighting
WARNING: Before lighting the boiler,ensure that the CASE
DOOR HAS BEEN CORRECTLY FITTED and that the sealing
strip fitted to the case door is forming a tight seal with the main
boiler casing. Before proceeding to light the boiler, check that
the external electricity supply to the boiler is switched off and
that the boiler thermostat is in the 'O' position.
Turn on the gas service cock.
2
). Examine for Ensure that the pump and radiator isolating valves are open.
Ensure that the time control, if fitted is in an on condition, and
that the room and/or cylinder thermostats, where fitted are set
to high temperatures.
Switch on the external electricity supply to the boiler.
After installation of the appliance, preliminary electrical system
checks must be carried out. The checks to be carried out are:-
A.
B. Short Circuit
C. Polarity
D. Resistance to Earth
Refer to Fault Finding Chart FIG. 30
Turn the boiler thermostat on and to a high setting and after a
period of time the main burner will light, this can be observed
through the sight glass in the front cover of the boiler. The time
period can vary upwards of 45 seconds, depending on the
amount of air in the pipework.
Test for gas soundness around the boiler components *
using leak detection fluid.
Turn the boiler thermostat to 'O'.
NOTE:
There could be a delay in lighting if the control knob is
switched on and off and then on again rapidly.
If burner pressure adjustment is necessary proceed as follows,
referring to FIG. 25.
WHITE RODGERS GAS CONTROL VALVE
Remove the brass cover screw from the gas control valve and
turn the screw beneath, clockwise to increase the pressure or
anti-clockwise to decrease the pressure.
HONEYWELL GAS CONTROL VALVE
Turn the pressure adjustment screw anti-clockwise to increase
the pressure or clockwise to decrease the pressure.
Earth Continuity