EHC Comet - Troubleshooting; Safety Valve Checks

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15. Guarantee
The Comet Combi boiler comes with a 2 year parts & labour warranty and the stainless steel
vessel carries a 10 year guarantee against faulty materials or manufacture provided that:
• It has been correctly installed as per this document and all the relevant standards, regulations and codes of practice in force at
the time.
• It has not been modied in any way, other than by EHC.
• It has not been misused, tampered with or subjected to neglect.
• It has only been used for the storage of potable water and space heating.
• It has not been subjected to frost damage.
• The unit has been serviced annually.
• The benchmark service record has been lled in after each annual service.
• The guarantee period starts from the date of purchase which should be registered with EHC.
• The extended guarantee is not transferable, and rests with the original householder.
• The system is fed from a public mains water supply.
• Store temperatures do not exceed 70deg C.
• Installations are made only in the UK, Channel Islands & Republic Of Ireland.
• The water supply does not have a Chloride content greater than 250ppm.
• Units are not installed with uncontrollable heat sources (E.g. Wood Burning Stoves).
• The warranty card must be completed and sent back to The Electric Heating Company as soon as possible for registration.
• An internal Magnetic Filter is tted to the Boiler and it must be cleaned at least annually. (Note: Failure to clean the Magnetic
Filter may result in boiler shut-down). Warranty calls will not be covered for this repair
Warranty Exclusions
• Damage to the boiler from poor or incorrect installation work.
• Call out charges that have not been organised by the Electric Heating Company Ltd.
• Water leaks into the boiler. All plumbing connections must be checked at installation and commissioning.
• An internal Magnetic Filter is tted to the Boiler and it must be cleaned at least annually.(Note: Failure to clean the Magnetic
Filter may result in boiler shutdown). Warranty calls will not be covered for this repair.
• Damage caused to parts & equipment by scale build up or system debis / contamination is not covered by this warranty.
16. Troubleshooting
SAFETY VALVE CHECKS
Any water coming from either the expansion relief valve or the temperature / pressure relief valve during heat up is indicative of
a problem which needs to be identied and rectied. The temperature relief and expansion relief valves should be fully opened, one at
a time then both together allowing as much water as possible to ow through the tundish. Check that your discharge pipework is free
from debris and is carrying the water away without spillage over the tundish and release the valves and check that they re-seat properly.