Rheem 31202519V, Owner'S Manual And Installation Instructions

Page: 34 / 40

CONNECTIONS – PLUMBING
34
•
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.
The preformed insulation
collar supplied with the
temperature pressure relief
valve
meets these
requirements and must be
placed over the body of the
valve and secured in position
with the cable tie provided
after the valve has been fitted
to the water heater (refer to the
diagram on page 34).
EXPANSION CONTROL VALVE
It is mandatory to install an expansion control valve (ECV) in the cold water line
to the water heater to comply with Clause G12 of the New Zealand Building
Code, unless the water heater is installed as a push through installation (refer to
“Push Through (Free Outlet) Installation”
on page 28).
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 the
cold water
connection diagram on page 32). A copper drain line must be fitted to the
expansion control valve (refer to "Relief Valve Drain" on page 35).
The valve, if installed within 500 mm of the water heater, 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.
preformed insulation collar
SK7673 A4
REV AD 4/15
USE TEFLON TAPE
OPEN AND FIT
SUPPLIED
INSULATION TO
VALVE AS SHOWN
TPR Valve Insulation - Electric Water Heaters