Glow-worm Xtramax - Manual (Page 24)

24 4000116705-2
13 Commissioning
I O
1.5
bar
mode
Make sure the display indicates a system pressure of between 1 and 2 bar. Re-fill
system as necessary.
9085
8
5 7 6
➜
➜
Bleed each radiator to
remove the air, re-tighten
bleed screws. Open various hot water
taps to bleed system. Leave the cap on the
pump auto air vent open.
Reg 008
Ins 061a
Ins 062a
The pressure must be between 1 and 2 bar
4
9621
Open the system filling loop and fill the
system until the pressure indicated
on the display is between 1 and 2 bar.
1.5
bar
mo
The pressure must be between 1 and 2 bar
• Adjust heating temperature to maximum .
• Check that any external controls, if fitted, are calling for heat
(set room thermostat to maximum).
• Allow the temperature to rise to the maximum value, with all
radiator valves open. The temperature rise will cause release of
the gases contained in the water of the central heating system.
• Gases driven towards the boiler will be automatically released
through the automatic air vent.
• The gases trapped at the highest point of the system must be
released by bleeding the radiators. Check the burner gas rate
required, ten minutes from lighting. Refer to Data Label on
electrical controls box. Should there be any doubt about the gas
rate it should be checked at the meter.
On reaching maximum temperature, the boiler should be turned
off and the system drained as rapidly as possible whilst still hot.
• Refill system to a pressure of between 1 and 2 bar and vent as
before.
• Restart boiler and operate until a maximum temperature is
reached. Shut down boiler and vent heating system. If necessary,
top up heating system and make sure that a pressure of at least
1 bar is indicated when system is COLD.
Flush the domestic hot water system by opening the hot water
taps for several minutes.