Instructions / Assembly

Installation and Assembly
12 kW 240 Volt Point-of-Use Tankless Electric Water Heater
Model # AE-12
Installing the Powerstar
Warning
Do not install the Powerstar in a room where there is a chance of freezing.
IMPORTANT - Read entire instructions
Check the pressure of the main water supply. To operate correctly the unit needs the following
running pressures:-
Sink
Min: 20psi (1.4 bar)
Max: 150psi (10.3 bar)
Securing the unit to the wall
Deciding the position
• If being used in a public place, position the unit out of reach to discourage vandalism.
• Mount the unit onto a flat section of wall, well away from any potential splashes of water or spray.
• Position the unit lengthways (diagram 1.) Remember to keep the length of hot water pipe to a
minimum in order to save energy.
• If the unit is to supply a sink, you can It it either above or below the sink.
Warning
Unit must be mounted 'Lengthways' with plumbing connection pointing down. Under no circumstances
should the unit be mounted differently.
Deciding the wiring route
• You have a choice of whether to feed the electric cable through the side or through the back of the
unit,
• If it is gong to be through the side of the unit, cut out the plastic lug to expose the rubber sleeve
• If it is going through the back of the unit, cut through the grommet on the backplate with a sharp
knife. Make sure that you do not remove the grommet from the backplate.
Feed the cable through the grommet before you mount the unit to the wall. If you are using an
approved cable fitting, remove the grommet.
Mounting on the wall
• Undo the retaining screws on the cover and take the cover of the unit. Hold the backdate in position
against the wall while you mark the four mounting holes.
• Drill the holes and secure the unit to the wall using the four no. 8 wood screws supplied
WARNING - IMPORTANT
Do not install a non-return check valve within 6 feet of the inlet.
Plumbing in the unit
Fitting the pipes
• The unit should be connected directly to the main cold water supply and not to pre-heated water. The
unit should be installed with service valves on both the inlet and outlet.
• We recommend that you use ½" copper or high pressure flex connections.
• Use Teflon tape for sealing pipe threads. Do NOT use pipe dope.
• Remember to keep the hot water pipe runs as short as possible. In some cases it may be worth fitting
a second unit to serve an additional fixture.
• If the unit is to supply more than one sink, a similarly flow restricted aerator should be used at each
tap.