Technical data

20
Left & Right Hand Side Water Connections – EM50 Models
All Aquamax mains pressure electric water heaters are manufactured with
dual inlets and outlets. For EM50 series water heaters, the cold and hot
water supply can be connected to either side of the water heater however
they must both be connected to the same side of the water heater.
Cross connecting will significantly affect the performance of the water
heater and is not permitted. Refer to the diagram below for acceptable
plumbing connections.
A kit containing 3 x ¾” brass plugs is supplied with the water heater to plug
off the unused cold and hot water supply fittings and the unused PTR
fitting. When installing brass plugs, apply thread sealing tape or an
approved thread sealant to plug thread before installation. The PTR valve
may be connected to either PTR fitting (centre two fittings in diagram
below).
Expansion Control Valve
In some areas, local regulations may make it mandatory to install an
expansion control valve (ECV) in the cold water line to the water heater.
Refer to “Scaling Water” on page 13.
The ECV must always be installed after the non return valve and be the last
valve installed prior to the water heater (refer to the “Cold Water Supply
Plumbing Arrangement” diagram on page 19). A copper drain line must be
fitted to the ECV (refer to “Relief Valve Drain(s)” on page 21).