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Do not t any stop cocks or isolating valves within the distance required for expansion. If a pressure reducing valve is
needed, due to a mains pressure of over 3.5 bar, an expansion control kit must be tted regardless of expansion pipe
-
work installed. The expansion distances quoted are for 15mm pipes and can be approximately halved for 22mm pipes.
The appliance must not be supplied with water of hardness less than 12°F, not with especially hard water (greater than
25°F); we recommend installing a water softener, properly calibrated and controlled - do not allow the residual hardness
to fall below 15°F.
The appliance is covered under the Building Regulations and therefore it is not possible to accommodate the expansion
water within the system pipe work and consequently a set of expansion controls must be installed.
Note: The discharge from relief valves must be made in a safe and conspicuous manner.
Please note that in all cases the dielectric junctions must be connected to the heater before any other connec
-
tion is made (these prevent an electrolytic reaction).
If the supplied Dieletric Junctions are not tted this could void the warranty.
Only the use of copper pipe is recommended for connection to the heater. If any other material is used it must be
able to withstand 90°C at 7 bar pressure for long periods.
No valve must be tted between the expansion/pressure relief valve and the water heater.
All other required safety components to install the appliance are supplied as a kit with the appliance:
15mm pressure reducing valve set at 3.5bar. Expansion vessel (charge pressure set at 3.5bar)"
DISCHARGE PIPE WORK NOTE:
The following guidelines refer to Building Regulation G3. It is good practice to follow these guidlines for all relief
valve discharge pipe work.
1) The tundish must be vertical and tted within 600 mm of the temperature & pressure relief valve and must be lo
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8


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  • How to adjust the temp as it keeps returning to full temp Submitted on 13-8-2022 at 11:02

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