Glow-worm Ultracom 24cx User Manual

Technical Helpline: 01773 828300
Glow-worm, Nottingham Road, Belper, Derbyshire. DE56 1JT
www.glow-worm.co.uk
0020088542-03 02.10
GAS VALVE(DUNGS)
KIT Pt. No. 2000802664
6mm white scroll incl.
Brass Flange adaptor, 4
off screws, 2 “O” rings
MODEL
24 & 30 ultracom cx
24 & 30 ultracom cxi
18 & 30 ultracom sxi
18 & 30 sxi
24 & 30cxi
MODEL
12 – 30 hxi
12 – 30 ultracom hxi
MODEL
38 cxi
38 ultracom cxi
Xtramax HE
MODEL
38 hxi
38 ultracom hxi
BG330
KIT Pt. No 2000802442
6mm white scroll
incl. Brass liner
and grommet
KIT Pt. No 2000802452
12mm grey scroll
incl. Brass liner
and grommet
KIT Pt. No. 0020018823
12mm grey scroll incl.
Brass Flange adaptor,
4 off screws, 2 “O” rings
If the burner door is removed during the gas valve
replacement a new door seal must be tted.
Burner Door Seal kit - Part No. 801635
IMPORTANT NOTES
THESE INSTRUCTIONS SUPERCEDE
THE GAS VALVE SETTING PROCEDURE CONTAINED
WITHIN THE ORIGINAL APPLIANCE LITERATURE.

Glow-worm Ultracom 24cx Specifications

General

Mounting	Wall-mounted
Output Rating	24 kW
Fuel Type	Natural Gas
ERP Rating	A
Warranty	2 years
Boiler Type	Combi
Heating Flow Temperature Range	30°C - 80°C

Summary

Gas Valve Replacement - Important Notes

Burner Door Seal Replacement Guidance

Instructions for fitting a new door seal kit when the burner door is removed during gas valve replacement.

Technical Requirements and Checks

General Inspection After Replacement

Checks after part replacement, including flue system, seals, electrical, gas, water connections, and system pressure.

Competency for Combustion Analysis

Requirements for personnel and equipment to perform combustion analysis and interpret results, referencing BS standards.

Operational Procedures and Settings

LPG Model Ignition Troubleshooting

Procedure for adjusting LPG models, including steps for troubleshooting ignition lockouts (F1) by adjusting the throttle.

Combustion and Gas Rate Adjustments

Procedures for checking CO2, CO/CO2 ratio, gas inlet pressure, and gas rate after adjustments.

Completion and Servicing Guidance

Steps for unachieved results, repeat servicing, and seeking technical advice.

Technical Data Tables

CO2 Settings and Gas Rates

Tables detailing CO2 settings, throttle turns, CO/CO2 ratios, and maximum gas rates for Natural Gas and LPG models.