Section 7, Plumbing the System
•
All plumbing lines must be run and secured so as to prevent
damage, chafing and kinking.
•
The Space Heating Module contains a distribution pump and
heat exchanger and is pre-wired and pre-plumbed for ease of
installation.
•
The WaterHeater™ by ITR should be filled and flushed prior to
operation to remove any foreign debris.
•
The WaterHeater™ by ITR is supplied with a
temperature/pressure relief valve and drain fitting. This
valve drains through the drain relief hose located at an
opening on the left front lower face of The WaterHeater™ by
ITR and is labeled “Temp/Pressure Relief Valve”. Do not
block or plug the valve or the hose. See the label attached
onto the drain relief hose for the proper utilization and
routing of this hose (see below).
•
Heater hose — PEX tubing. Slip-on foam insulation
coverings may be used over the hose fittings to reduce
heat loss. Secure all hose connections with spring clamps.
•
Air vents — Air vents for the fluid circulation system are
not supplied, but may be optionally installed to help bleed
air from the system.
NOTICE
The WaterHeater™
is supplied with a
temperature and
pressure relief valve
and drain relief
hose. This valve
drains through the
drain relief hose
located at an
opening on the left
front lower face of
the WaterHeater™
and is labeled
“Temp/Pressure
Relief Valve”. Do not
block or plug the
valve or the hose.
See the label
attached onto the
drain relief hose for
the proper utilization
and routing of this
hose.
CAUTION! THIS IS A DISCHARGE LINE!
IT IS CONNECTED TO THE COMBINATION TYPE TEMPERATURE AND
PRESSURE SAFETY RELIEF VALVE AT THE TANK. PROPER INSTALLATION IS
REQUIRED.
Discharge line should terminate through plain (unthreaded) pipe with at least a 6”
(152mm) air gap from a location where any discharge will be clearly visible. In no
case may a discharge line be directly connected to a sewer line. No reducing coupling
or other restriction shall be installed in the discharge line. The discharge line shall be
installed to allow complete drainage of both the valve and the discharge line.
Discharge line material must conform to local plumbing codes or ASME requirements.
Excessive length over 30’ (9.14m), use of more then four elbows, or reducing
discharge line size will cause a restriction and reduce the discharge capacity of the
valve. Temperature and pressure safety relief valve should be inspected at least once
every three years and replaced, if necessary. See tag attached to the valve for
additional instructions.
International Thermal Research
7-3
