Owner`s manual

Installing Your Heater
10
Gas Supply and Piping
If you are not sure what type gas is available in your locality,
obtain this information from your local gas supply company
prior to installing the heater.
The pilot and control system of this heater will automatically
stop the gas flow to the pilot burner and main burner if the pilot
flame is extinguished. This system also generates the
electricity required to operate the thermostat system. Since no
electrical power is required from any other source, this heater
will continue to operate during a power outage, with the
exception of the optional blower kit.
If installation is for L.P. Gas, have the L.P. installer use a two-
stage regulator and make all connections from storage tank to
heater.
Use two pipe wrenches when making the connection to the
valve to prevent turning or damage to gas valve.
Piping
Gas pipe must be installed by a qualified installer. The pipe
system must comply with local codes and ordinances or with
the latest edition of the American National Fuel Gas Code
Z223.1.
1. The gas supply line must be of an adequate size to handle
the Btu/hr requirements and length of the run for the unit
being installed. Determine the minimum pipe size from
below table basing the length of the run from the gas
meter or source to the unit.
NATURAL GAS
PIPE CAPACITY - Btu/hr
(INCLUDES FITTINGS)
PIPE SIZE
LENGTH OF
PIPE-FEET
1/2
INCH
3/4
INCH
1 INCH
20
40
60
92,000
63,000
50,000
190,000
130,000
105,000
350,000
245,000
195,000
L. P. GAS
PIPE CAPACITY - Btu/hr
(INCLUDES FITTINGS)
PIPE SIZE
LENGTH OF
PIPE-FEET
1/2
INCH
3/4
INCH
1 INCH
20
40
60
189,000
129,000
103,000
393,000
267,000
217,000
732,000
504,000
409,000
2. Use new, properly reamed pipe free from chips such as
steel or black iron pipe and fittings or other approved by
local codes.
3. Do not thread pipe too far. Valve distortion or malfunction
may result from excess pipe within the control.
4. Use moderate amount of good quality compound to pipe
only, leaving 2 end threads bare. If L.P. gas installation,
use compound resistant to action of liquefied petroleum
gases.
WARNING: All gas piping and connections must
be tested for leaks after installation or servicing all
leaks must be corrected immediately.
5. Use ground joint unions.
6. Install a drip leg (sediment trap). The drip leg is required
to prevent condensate and scale particles from entering
the gas valve.
7. Install a manual shut-off valve.
8. Provide a 1/8 NPT test gauge connection immediately
before the gas supply connection to the heater.
9. Do not locate pipe joints in a concealed location where
leak detection and repairs are difficult or impossible.
IMPORTANT: Hold pressure regulator with wrench when
connecting it to gas piping and/or fittings.
1. Make sure the control of the heater is in the "OFF"
position.
2. Open the manual shut off valve. Test for leaks by applying
a liquid detergent to all joints. Bubbles forming indicate a
leak.
3. Correct any leak at once.
CAUTION: Never use an open flame to check for
leaks.