Glow-worm Ultracom 2 24cxi User Manual

Supplied By www.heating spares.co Tel. 0161 620 6677
0020085231_02 - 05/10 - Glow-worm
- 45 -
18.9.1 Spark electrode
• Disconnect the electrode inlet (3) and the grounding cable (2).
• Remove the 2 spark electrode retaining screws (4).
• Carefully remove the electrode from the combustion
chamber.
• Check that the extremes of the electrode (6) are not
damaged.
• Clean away any accumulation of dirt and check that the
distance between the two electrodes is between 3.5 and 4.5
mm.
• Check that the gasket (5) is not damaged. Replace if
necessary.
18.9.2 Dismantling the burner
b
Warning: The gasket (12) must be replaced each
time the burner is dismantled.
• Disconnect the spark electrode connector (6) from the igniter
unit.
• Remove the gas pipe (17).
• Remove the connectors from the gas valve (1) and the fan
(15).
• Remove the retaining screw of the silencer.
• Loosen the 4 nuts (7).
• Remove the burner group from the heat exchanger (11).
• The studs (8) xed to the heat exchanger must not
be damaged. Should it be damaged, replace the heat
exchanger.
• The burner gate insulation should not be damaged Replace
if damaged.
18.9.3 Cleaning the heat exchanger
• Clean the coil (19) in the heat exchanger (11) with water.
18.9.4 Burner control
• The burner (13) does not require maintenance and should
not be cleaned.
• Check that its surface is not damage. Replace the burner if
necessary.
• Following the verication or replacement of the burner,
assemble the burner group as described in the following
chapter.
18.9.5 Re-assembling the burner group
• Place the burner group on the heat exchanger (11).
• Progressively tighten the 4 nuts (7) in an alternate order.
• Reassemble the silencer.
• Connect the gas tube (17) with a new gasket to the burner
group.
• Connect the spark electrode connector (6) to the igniter unit.
• Connect the connector to the gas valve (1) and the fan (15).
• Open the appliance gas input.
• Check the watertightness of the gas connection.
18.10 Service completion
• Re-check the combustion, see chapter "Combustion check".
On completion of the service, the "Benchmark" Service Record
sould be completed.
MAINTENANCE

Glow-worm Ultracom 2 24cxi Specifications

General

Model	Ultracom 2 24cxi
Category	Boiler
Central Heating Output	24kW
Mounting	Wall-mounted
ERP Rating	A
DHW Output	24kW
Heating Flow Temperature Range	30-80°C
DHW Flow Rate at 40°C Rise	8.6 l/min
DHW Flow Rate at 50°C Rise	6.9 l/min
Warranty	2 years
Expansion Vessel	8 liters
Type	Combi Boiler