Installation manual

35 ©ESP Ltd. Sept 2008
UNVENTED HOT WATER STORAGE SYSTEMS AND CONTROLS
Spare Components
The Inlet Control Groups supplied by Reliance for use with Unvented Systems
have proven to be extremely reliable in field service but, in the unlikely event
of failure, the following spare components are available from the relevant
manufacturer of the Unvented System in question.
Products Illustrated
Pressure Reducing Valve cartridge - supplied at the manufacturer‟s required
setting. One piece design facilities replacement. Supplied complete with inte-
gral strainer.
Replacement Expansion Valve cartridge and seat - the unique design enables
damaged valves to be refurbished in situ without need for their removal.
Problems and Remedial Action
All manufacturers of Unvented Systems which are available in the UK today,
supply a comprehensive Instruction Manual with each unit, giving full details
of fault diagnosis and remedial action required.
Summary
There are no mysteries to Unvented Hot Water Storage Systems and their
installation. The continual development of both Unvented units and their as-
sociated controls together with the superiority of these units in comparison
to their traditional vented “cousins”, will undoubtedly see the Unvented Hot
Water Storage System as the preferred solution to Hot Water Storage
requirements in the UK.