Glow-worm Ultracom2 sxi - Manual (Page 26)

0020092785_02 - 05/10 - Glow-worm
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12 Commissioning
i At the time of commissioning, complete all relevant
sections of the Benchmark Checklist located in the
centre pages of this document.
The commissioning should be carried out by a competent
person approved at the time by the Health and Safety Executive
and in accordance with the current issue of BS6798.
12.1 Switching on
• Do not operate the boiler without water.
• Make sure that the system has been thoroughly flushed out with
cold water and that all cleanser if used has been removed.
• With the gas service isolation valve closed, with no demand
from any external controls and the power supply to the boiler
switched off.
• Test for gas soundness and purge air from the gas supply.
• Press the on/off button to activate the appliance.
• Make sure that the domestic hot water and heating functions
on your appliance are not activated.
12.2 filling the CH system (Central heating)
• Make sure that the installation's cold-water inlet isolating
valve is open.
• Open the isolating valves located on the connections: they
must be positioned in the direction of the flow.
If the Central Heating (C.H.) pressure falls below 0.4 bar, the
display will flash the current pressure and the boiler will not
operate. To increase the pressure, the CH circuit requires
"Topping up".
i
When turning the 230Vac supply on to the boiler
should the water pressure be less than 0.5 bar an
automatic air vent function will be activated for a
period of 5 minutes. During this time the pressure
should be increased and air vented from the system.
During this time the burner will not fire in either CH
or DHW mode and the display will blink displaying
the current water pressure.
• Vent air from each radiator until the water flows normally,
then close the vents.
• Leave the pump's air vent open.
i
The following two operations will unblock the pump's
engine after a prolonged storage period and will
purge the air from the pumps circuit.
• Remove the screw from the pump shaft and introduce a flat
screwdriver. A trickle of water, under no pressure, should
normally come out of the pump.
• Rotate the pump shaft through several turns, then replace
the screw.
12.3 filling the Condensate Trap
A
B
C
1
1
2
Key
1 filling trap
2 Condensate trap
• Fill the trap 3/4 full with water (1).
• Activate the Heating and, if Glow-worm intelligent controls
are fitted, Domestic Hot Water functions.
• Run the appliance for at least 15 minutes, with a heating
temperature set to greater than or equal to 50°C (not
applicable for an installation with underfloor heating).
• Vent air from each radiator again until the water flows
normally, then close the vents.
• If you have difficulties in removing the air, launch the air-
removal programs in the heating circuit (see the chapter
("Technical settings for the appliance and list of parameters").
• Make sure that the pressure indicator shows a value of 0.8
bars; otherwise, fill the appliance again.
12.4 Initial lighting
12.4.1 Control
i
The combustion for this appliance has been
checked, adjusted and preset at the factory for
operation on natural gas (G20) as defined on the
appliance data label.
No measurement of the combustion is necessary.
Should the appliance require to be converted to LPG
gas ensure you follow the gas conversion section
before lighting the boiler.
• Check that the appliance has been installed in accordance
with the instructions.
• Check the integrity of the flue system and flue seals.
INSTALLATION