Installation Manual
25
HE Series Infrared Gas Heater Installation and Operation Manual
Access to the manifold pressure test port is located on the top of the valve. A 3/16" Al-
len Key is required. A should be used to check the manifold pressure. Gauges
which measure in ounces or PSI are not accurate enough to measure or set the pressure.
Connection between the gas supply pip-
ing and the appliance must be in accord-
ance with local and national codes, ANSI
Z223.1 (NFPA 54) in the USA.
The HE Series is approved as a Vented
Overhead Heater and may be rigid piped
to the building gas supply (also see Flex-
ible Gas Connection Option, next page).
Check with local authority for locally re-
quired gas connection.
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Provide a 1/8 in (3.2 mm) NPT plugged tapping, accessible for test gauge con-
nection, immediately upstream of the gas supply connection to the heater.
The gas supply should be checked first with heater turned “OFF” followed by an-
other check with heater turned “ON”.
This appliance and its main gas valve must be disconnected from the gas supply
piping system during any pressure testing of the gas supply piping system at test
pressure in excess of 1/2 psi (3.5 kPa).
This appliance must be isolated from the piping system by closing the equipment
shut off valve (field supplied) during any pressure testing of the gas piping sys-
tem at test pressure equal to or less than 1/2 psi (3.5 kPa).
Installation of a gas line (trap) “drip leg” is required at the inlet connection tee following the
pipe drop to the heater. Failure to provide a “drip leg” could result in condensation and foreign
matter passing into the gas valve. Failure to install a “drip leg” in the gas line can cause prop-
erty damage, injury or death and will void the heater warranty.