4BN/L6,4SN/L5 Manual
IM100310
RD: DEC 2013
RL: 1B
7
4.
GAS SUPPLY:
Gas supply to this heater requires a gas pressure regulator (not supplied).
The heater comes with a flexible hose assembly inside the post with 3/8” male flared fitting for
hook-up to a minimum 5” w.c. Natural Gas supply (7” w.c. maximum), OR minimum 11” w.c. LP
Gas (14” w.c. maximum).
The combination gas control valve in the heater has an integral pressure regulator that reduces
gas manifold pressure to the orifice and burner to 3.5” w.c. natural gas, or 10.0” w.c. propane.
Never connect an unregulated gas supply to the heater.
Only use the gas type set for operation of the heater. Do not use LP gas if the gas
valve and gas orifice are set for natural gas, or do not use natural gas if valve and
orifice are set to operate on LP gas.
Personal injury, death, and/or property damage can result from using the incorrect gas.
Gas supply to this heater requires a gas pressure regulator (not supplied).
Heaters may be connected to a regulator individually or in zones. Gas pressure regulators must be
for the correct gas type, and properly sized for each particular installation.
For your safety a complete gas tightness check of all connections and hoses must be performed at
the installation site, prior to use.
PRESSURE TESTING OF THE GAS SUPPLY PIPING
This appliance and its individual shutoff valve must be disconnected from the gas supply piping
system during any pressure test of that system at test pressures in excess of 1/2 psi (3.5 kPa)
This appliance must be isolated from the gas supply piping system by closing its individual
manual shutoff valve during during any pressure testing of the gas supply system at test pres-
sures equal to or less than 1/2 psi (3.5 kPa)
LEAK TEST MUST BE PERFORMED: refer to Leak Test procedures on page 11
Any repairs must be made by a trained and qualified gas service technician.
PRECAUTIONS:
Periodically (at least annually), or if the smell of gas is detected, check the whole system
for leaks
Follow leak test procedures on page 11
Extinguish all open flames.
Never smoke while leak testing.
If you detect a leak, turn off the gas supply and call a qualified gas service technician, or
your gas supplier.
Only replacement parts by the manufacturer are to be used for repair. Substitution can
create a safety issue and result in serious injury or death, and will void the warranty.
Do not use the heater until all connections have been leak tested and are sound !!!
NATURAL GAS or PROPANE
