CFEWH SERIES 1-10 /20 | INSTALLATION Manual © February 2021 MicroHeat Technologies Pty LTD
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11
of
23
CFEWH Plumbing & Electrical Installation
PLUMBING CONNECTION
Water Inlet Pressure Limiting Valve and Shutoff Valve Connection
The unit is a closed outlet water heater and is intended to operate
at the pressure of the water mains, where
the flow of water is
controlled by one or more faucets/valves in the
outlet line
.
The unit can be installed into any type of commercial or residential
construction as per the current Plumbing Standards.
However,
it is mandatory for a water pressure limiting valve and
a shutoff valve to be connected in series with the
unit’s
cold
water inlet connection
(6).
•
The unit maximum rated operating line pressure is 1 MPa / 10
bar / 145 PSI.
•
The unit minimum operating pressure is atmospheric pressure.
•
The installation of a pressure limiting valve
–
a
mandatory requirement
–
ensures that excess
water pressure applied, as result of water
hammer and/or other circumstances, does not
stress the appliance unduly.
•
The inline water pressure limiting valve must
be rated at 5.0 bar/72.5 psi/500 kpa.
•
The shutoff valve installed
must not be
a non-
return type valve.
•
If the water heater is supplying a Dishwasher
/ Washing machine, a water hammer arrestor
must be installed on the outlet side of the
water heater.
Tandem CFEWH Series 1-20 plumbing connection
IMPORTANT
MicroHeat nor its Distributors will be liable for any damages through failure to comply with the
installation and operating instructions outlined in this manual
–
specifically in this instance where
the specified water pressure limiting valve and shutoff valve type, as indicated, must be installed
with this unit. - If the unit is supplying a dishwasher or washing machine a water hammer
arrestor must be installed at the outlet side of the unit, failure to do so will void warranty.
Acceptable inlet/outlet connections
The Inlet (6) and Outlet (7) water connections are
both ½” BSP
SERIES GB. There are three options for
inlet/outlet connections with this unit:
Single CFEWH Series 1-10 plumbing connection
