Rheem Electric Domestic Water Heater Installation And Owner's Manual page 29

The valve must be insulated with closed cell polymer insulation or similar
(minimum thickness 9 mm) and the insulation installed so as not to impede the
operation of the valve. The insulation must be weatherproof and UV resistant if
exposed.
Where an insulation collar is supplied with the temperature pressure relief
valve, this must be placed over the body of the valve, prior to fitting the valve to
the water heater (refer to the
EXPANSION CONTROL VALVE
Local regulations may make it mandatory to install an expansion control valve
(ECV) in the cold water line to the water heater. In other areas, an ECV is
required if the saturation index is greater than +0.4 (refer to
on page 11).
FITTING OF RELIEF VALVE
THE TEMPERATURE PRESSURE RELIEF VALVE MUST
The expansion control valve must always be installed after the non return valve
BE FITTED TO THE WATER HEATER AS SHOWN ABOVE.
and be the last valve installed prior to the water heater
page 27). A copper drain line must be fitted to the expansion control valve
(refer to "Relief Valve Drain"
The valve must be insulated with closed cell polymer insulation or similar
(minimum thickness 9 mm) and the insulation installed so as not to impede the
operation of the valve. The insulation must be weatherproof and UV resistant if
exposed.
diagram on page 29).
USE TEFLON TAPE
FIT SUPPLIED INSULATION TO
VALVE AS SHOWN
on page 30).
29
CONNECTIONS – PLUMBING
"Water Supplies"
(refer to diagram on
This model wate
with dual handed
A kit is supplied
fittings. The kit c
parts:
2 x R ¾ /20 bras
1 x R ½ /15 bras
2 x large plastic
1 x small plastic
Plugging Off Unu
Apply approved
compound to the
1. Fit a ¾" plug t
cold water and h
½" plug to the un
Tighten the plug
2. Fit a plastic in
plug.