14
WARNING:
A qualified service technician must connect heater to gas supply. Follow all
local codes.
WARNING:
This appliance requires a 3/8-inch NPT (National Pipe Thread) inlet
connection to the pressure regulator.
WARNING:
Never connect heater to private (non-utility) gas wells. This gas is commonly
known as wellhead gas.
WARNING:
Do not overtighten gas connections.
CAUTION:
Use only new, black iron or steel pipe. Internally tinned copper tubing may
be used in certain areas. Check your local codes. Use pipe of 1/2-in. diameter or
greater to allow proper gas volume to heater. If pipe is too small, undue loss of
pressure will occur.
NATURAL GAS MODELS:
CAUTION:
Check your gas line pressure before connecting heater to gas line. Gas
line pressure must be no greater than 10.5 inches of water. If gas line pressure is
higher, heater regulator damage could occur.
PROPANE MODELS:
CAUTION:
Never connect heater directly to the gas supply. This heater requires an
external regulator (not supplied). Install the external regulator between the heater and
gas supply.
CAUTION:
Avoid damage to regulator. Hold gas regulator with wrench when
connecting into gas piping and/or fittings.
CAUTION:
Use pipe joint sealant that is resistant to gas (Propane or Natural Gas).
CONNECTING TO GAS SUPPLY
Typical Inlet Pipe Diameters
Use 3/8-inch black iron pipe or greater. Installation must include an equipment shutoff valve,
union, and plugged 1/8-inch NPT tap.
Locate NPT tap within reach for test gauge hook up. NPT tap must be upstream from heater
(see Fig. 11).
IMPORTANT:
Install an equipment shutoff valve in an accessible location. The equipment
shutoff valve is for turning on or shutting off the gas to the appliance.
Apply pipe joint sealant lightly to male threads. This will prevent excess sealant from going
into pipe. Excess sealant in pipe could result in clogged heater valves
.
