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F F u u r r n n a a c c e e G G e e n n e e r r a a l l I I n n s s t t a a l l l l a a t t i i o o n n
Furnace in horizontal right orientation with gas piping out top
The furnace is shipped standard for left side installation of gas piping.
A cutout with plug is provided on the right side for an alternate gas
piping arrangement.
The installation of piping shall be in accordance with piping codes and
the regulations of the local gas company. Pipe joint compound must be
resistant to the chemical reaction with liquefied petroleum gases.
Important: If local codes allow the use of flexible gas appliance
connector, always use a new listed connector. Do not use
a connector which has previously serviced another gas
appliance.
Refer to the piping table for delivery sizes. Connect gas supply to the
unit, using a ground joint union and a manual shut-off valve. National
codes require a condensation drip leg to be installed ahead of the gas
valve.
The furnace and its individual shut-off valve must be disconnected
from the gas supply piping system during any pressure testing of that
system at test pressures in excess of 1/2 psig (3.5 kPa).
The furnace must be isolated from the gas supply piping by closing its
individual manual shut-off valve during any pressure testing of the
gas supply piping system at test pressures equal to or less than 1/2
psig (3.5 kPa).
Note: Maximum pressure to the gas valve for natural gas is 13.8" W.
C. Minimum pressure is 5.0" W.C.
All gas fittings must be checked for leaks using a soapy solution before
lighting the furnace. DO NOT CHECK WITH AN OPEN FLAME!
22
Ground
1/8" NPT
Union Joint
Test Fitting
Drip Leg
Main Manual
Shut-o Valve
Automatic Gas Valve
with Manual Shut-o
Furnace in horizontal right orientation with gas piping out bottom
Note: For ease of installation, optional accessory part PIP02095 is
recommended for gas piping entering the bottom of the
furnace in the horizontal right position.
NATURAL GAS ONLY
TABLE OF CUBIC FEET PER HOUR OF GAS
FOR VARIOUS PIPE SIZES AND LENGTHS
PIPE
SIZE
10
20
30
1/2
131
90
72
3/4
273
188
151
1
514
353
284
1–1/4
1060
726
583
This table is based on Pressure Drop of 0.3 inch W.C. and 0.6 SP.
GR. Gas
ORIFICE SIZES
INPUT
NUMBER OF
RATING
BURNERS
BTUH
40,000
1
60,000
1
80,000
1
100,000
1
Automatic Gas Valve
with Manual Shut-o
Ground
Union
Drip Leg
Joint
LENGTH OF PIPE
40
50
60
62
55
50
129
114
104
243
215
195
499
442
400
MAIN BURNER ORIFICE
DRILL SIZE
NAT. GAS
1 - 3.2 mm
1 - #23
1 - #15
1 - #11
L8V1-SVX001-1A-EN
Main Manual
Shut-o Valve
1/8" NPT
Test Fitting
70
46
95
179
368
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