Protherm 100 User Instructions - page 16
16
COMMISSIONING
The commissioning and first firing of the boiler must only be
carried out by a competent person.
To gain access to the inside of the boiler undo screws securing front
panel at upper corners, remove front panel by pulling forwards and off.
Disconnect earth wire from front panel.
Gas installation
It is recommended that any air is purged from the supply at the gas
inlet test point on the gas valve, see diagram 13.
1
- Inlet test point
2
- Outlet test point
Filling the system
•
Open isolating valves (
A
,
E
and
D
) see diagram 6 and cap on au-
tomatic air vent on top of pump, see diagram 19.
•
Fill system by opening system filling loop until a pressure of be-
tween 1 and 2 bar is shown on the boiler pressure gauge.
•
Bleed each radiator until a continuous jet of water is obtained.
•
Do not close automatic air vent cap.
•
Open various hot water taps to bleed hot water circuit.
•
Make sure that pressure gauge reads between 1 and 2 bar.
Re-pressure as necessary.
Diagram 13
Important:
When venting air from boiler, do not touch the schrader valve on the expansion vessel, it is NOT a vent.
Starting the boiler
Before starting the boiler check that:
- The gas meter tap is open.
- The boiler gas service cock is open.
- The water isolating cocks are open.
- The boiler is connected to the electrical supply.
First starting up
•
Set boiler to run in central heating as described in
‘Users Instructions’
.
•
Set heating temperature control to maximum temperature and check that any external controls, if fitted, are
calling for heat.
•
Allow the temperature to rise to the maximum value, with all radiator valves open. Air contained in the water of
central heating system will be automatically released through the automatic air vent. Air trapped at the hightest
point of the system must be released by bleeding the radiators.
On reaching maximum temperature, the boiler should be turned off and the system drained as rapidly as possi-
ble whilst still hot.
•
Refill system to a pressure of 1 bar and vent as before.
•
Restart boiler and operate until a maximum temperature is reached. Shut down boiler and vent air from heating
system. If necessary, top up heating system and make sure that a pressure of 1 bar is indicated on the pressure
gauge when system is COLD.
Gas pressures
•
Shut down boiler.
•
Undo screw on gas inlet test point ‘1’ on gas valve, see diagram 13.
•
Connect a suitable pressure gauge.
•
Start boiler as described in
‘Users Instructions’.
•
Check that there is a constant pressure of 20 mbar. If the pressure is insufficient, it is necessary to check the gas
supply/pipework and correct any fault.
•
Shut down boiler.
•
Remove pressure gauge, tighten up test point screw and check for gas soundness.