-6-
ATC Electrical & Mechanical,
ATC House, Broomhill Drive, Tallaght, D24 EF99, Ireland
IE: 01 4678301, UK:0203 564 9164, Email [email protected]
Kit-A
1
Non Return
Valve
*
MWS
Service
Valve
*
Kit-C
1
To Drain
Pressure Release
Valve Supplied
With Unit
For Inlet water pressure up to 4.1 bar
where expansion in the mains is not
possible .
Cold in
Hot out
Kit-A
1
Non Return
Valve
*
MWS
Service
Valve
*
Kit-C
1
To Drain
1: Available as accessory
*:From Plumbing Merchant
Pressure Release
Valve Supplied
With Unit
For Inlet water pressure over 4.1 bar.
Kit-B
1
Note: If a pressure reducing
valve is used then allowing for
expansion in the pipework is
not possible. An expansion
vessel must be used.
Cold in
Hot out
5, 10 or 15 Ltr
Water heater
CLOSED SYSTEM THERMAL EXPANSION
There is a Pressure relief safety valve supplied with the water heater, the pressure relief
outlet will allow a little water to escape when heating due to expansion of the water in
the tank.
It is recommended to pipe this waste to a tun-dish (Kit-C) and then to waste. The safety
valve has been pre-set in the factory to 6 bar, please do not adjust.
The Pressure Relief safety valve should be tested by twisting the top in an anti-clockwise
direction until water flows out of the waste outlet; It is recommended that pressure relief
valves are tested at least once every six months, especially to reduce leakage caused by
the buildup of minerals and corrosion.