Installation manual
FIGURE 4B - Swivel Connectors, Option
CK10, to Suspend the Heater from 1” Pipes
Be sure the threaded swivel connectors
are locked to the heater as illustrated.
FIGURE 4A - Suspending the Heater with
Rods from the Threaded Nut Retainers
Add a 3/8 nut
and washer to
lock the hanger
rod to the heater.
3/8 threaded rod
(field supplied)
Be sure the threaded hanger rods are
locked to the heater as illustrated. Length
of threaded rod extending into the heater
MUST NOT exceed 1/2” (13mm).
Recommended maximum hanger rod
length is 6 feet (1.8M).
All piping must be in accordance with requirements outlined in the National Fuel
Gas Code ANSI Z223.1/NFPA 54 (latest edition) or CSA-B149.1 and B149.2 (See
Paragraph 2). Gas supply piping installation should conform with good practice
and with local codes. Support gas piping with pipe hangers, metal strapping, or
other suitable material; do not rely on the heater to support the gas pipe.
The heater is oriced for operation with natural gas having a heating value of 1000
(± 50) BTU per cubic ft or propane gas with a heating value of 2500 (± 100) BTU
per cubic ft. If the gas at the installation does not meet these specications, con-
sult the factory for proper oricing.
Pipe joint compounds (pipe dope) shall be resistant to the action of liqueed petro-
leum gas or any other chemical constituents of the gas being supplied.
7.0 Mechanical
7.1 Gas Piping and
Pressure
7.1.1 Gas Supply
WARNING
This appliance is equipped for a maximum gas supply
pressure of 1/2 psi, 3.5 kPa, or 14 inches water column.
Supply pressure greater than 1/2 psi requires installation
of an additional lockup-type service regulator external to
the unit.
WARNING: PRESSURE TESTING SUPPLY PIPING
Test Pressures Above 1/2 PSI: Disconnect the heater and
manual valve from the gas supply line which is to be tested.
Cap or plug the supply line.
Test Pressures Below 1/2 PSI: Before testing, close the manual
valve on the heater.
If ordered with swivel connectors, Option CK10, for 1” pipe attach the swivels at
the threaded nut retainers. Suspend with 1” pipes (FIGURE 4B).
6.0 Hanging the
Heater (cont’d)
Form I-UEAS, Page 8