Installation
6
2
Plumbing Installation
Install shutoff valve above (upstream of) the
heater inlet.
Components Needed:
(2) Union 3/4"
Shutoff Valve
Pressure and Temperature Relief Valve (150 psi/10 bar)
Y-Strainer (100 mesh) or Inline Filter (150 microns)
(2) Gate or Ball Type Valves
Drain pipe
Water hammer arrestor (recommended)
Elbows, nipples and fittings as needed
CAUTION To avoid damage to the electronics or internal
wiring, do not perform any brazing or sweat
soldering inside the enclosure.
NOTICE! Failure to install proper filtration may result in a
flow switch malfunction.
NOTICE! To avoid water damage, install a drain pipe from
the pressure relief valve to an unrestricted drain.
If end use fixture is not at the highest point in the
plumbing loop, then an automatic air vent valve must
be added at the highest point in the system or at any
drop to eliminate trapped air.
Install one union on the water inlet side of the heater
and another union upstream of the 100 Mesh (150
micron) y-strainer.
Install one union on the water outlet side of the
heater and another after the T & P Relief Valve.
Install the pressure relief valve (150 psi/10 bar) and
outlet plumbing of heater per code requirements and
route relief valve discharge to drain. Make sure no
shutoff valve is between the water heater outlet and
the relief valve, as well as no shutoff valve between
the relief valve discharge and drain. Ensure plumbing
is secure and not subject to vibrations.
WARNING The heater must be lying flat to do any
soldering on the inlet or outlet tubes. Soldering on
the inlet or outlet tubes in the upright position can
damage internal components. Damage caused by
dripping solder or flux can make your heater
inoperable.
Use 3/4" hard copper tubing or pipe as needed.
Dimensions, Plumbing and Electrical Configurations
V Series heaters have 1/2" inlet and outlet and require 1/2" copper tubing.
