CONNECTIONS – PLUMBING
28
A
¾” brass plug with an internal hex is supplied with the water heater to plug off
the unused cold water fitting. When installing the brass plug, apply thread
sealing tape or an approved thread sealant to the plug thread before
installation. Tighten the plug with the allen key supplied.
HEAT TRAP
The hot water outlet is located on top of the water heater. An external heat trap
is required be installed. The heat trap is to be within one (1) metre of the hot
water outlet, before the first hot water branch and have a vertical drop of
250 mm from the outlet of the water heater.
PIPE SIZES
To achieve true mains pressure operation, the cold water line to the water
heater should be the same size or bigger than the hot water line from the water
heater.
The pipe sizing for hot water supply systems should be carried out by persons
competent to do so, choosing the most suitable pipe size for each individual
application. Reference to the technical specifications of the water heater and
local regulatory authority requirements must be made.
TEMPERATURE PRESSURE RELIEF VALVE
The temperature pressure relief valve is shipped in the water heater carton
base. The temperature pressure relief valve must be fitted before the water
heater is operated. Before fitting the relief valve, make sure the probe has not
been bent. Seal the thread with Teflon tape - never hemp. Make sure the tape
does not hang over the end of the thread.
Screw the valve into the selected opening
labelled “Relief Valve”
(refer to the
installation diagram on page
25
)
leaving the valve outlet pointing downwards.
Do not use a wrench on the valve body - use the spanner flats provided. A
copper drain line must be fitted to the temperature pressure relief valve (refer to
"Relief Valve Drain"
on 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.
