INSTOMAX
TM
Integrated instantaneous water heater installation, use and care manual
(Revision Sept 2013)
,
Page
7.
Replacing the relief valve will not correct the
problem. One method of preventing pressure
build-up is to install an expansion tank on the
cold
water
supply
line
between
the
INSTOMAX
TM
unit and flow check valve. Contact
your installing contractor, water supplier, local
plumbing inspector or plumbing supply house for
assistance.
3.5.6 Domestic hot water pressure relief
valve
The INSTOMAX™ is provided with a factory
installed domestic hot water pressure relief valve
factory set at 860 kPa (125 psig). Connect the
supplied relief valve outlet downward to insure
that any expelled water will be directed toward a
safe location.
Relief valve outlet pipe diameter must not be of
samller diameter than the relief valve outlet. The
end of the pipe must be visible and protected
from freezing.
3.5.7 Thermostatically controlled mixing
valve
The INSTOMAX™ is equipped with a factory
installed thermostatically controlled mixing valve.
This valve allows reducing, setting and
regulating the domestic hot water temperature at
a safe level. In order to adjust the mixing valve
to the desire temperature, create a demand for
domestic hot water, measuring the domestic hot
water temperature will indicate the adjustment
required.
3.6 ELECTRICAL
3.61 Main electrical power supply
The water heater electrical wiring and grounding
connection must be in accordance with the
National Electric Code or the local electric
installation code applicable.
It is the electrical technician responsibility to
insure that the electrical installation is in
accordance with the applicable code and
regulation.
Electrical power supply must be of a 240 volts or
208 volts single phase 60 Hz providing two
conductors (L1-L2) with a ground wire. The
installation must be protected by an appropriate
capacity breaker.
Since the INSTOMAX™ is available in different
power capacities; it is the electrical technician
responsibility to check the amperage rating
shown on the equipment identification sticker in
order to select the appropriate wiring and
breaker capacities. The wiring used can be
either of aluminum or copper, but must be rated
for a minimum of 90°C (190°F).
