Technical data

CONNECTIONS – PLUMBING
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 diagram on page 29).
FITTING OF RELIEF VALVE
THE TEMPERATURE PRESSURE RELIEF VALVE MUST
BE FITTED TO THE WATER HEATER AS SHOWN ABOVE.
126504 AD
USE TEFLON TAPE
FIT SUPPLIED INSULATION TO
VALVE AS SHOWN
This model water heater is supplied
with dual handed water connections.
A kit is supplied to plug off the unused
fittings. The kit contains the following
parts:
2 x R ¾ /20 brass plugs
1 x R ½ /15 brass plug
2 x large plastic insulation caps
1 x small plastic insulation cap
Plugging Off Unused Connections
Apply approved sealing tape or
compound to the thread of each plug.
1. Fit a ¾” plug to each of the unused
cold water and hot water fittings and the
½” plug to the unused TPR valve fitting.
Tighten the plugs.
2. Fit a plastic insulation cap over each
plug.
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 “Water Supplies”
on page 11).
The expansion control valve must always be installed after the non return valve
and be the last valve installed prior to the water heater (refer to diagram on
page 27). A copper drain line must be fitted to the expansion control valve
(refer to "Relief Valve Drain" on page 30).
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.