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S8V2-SVX001-1A-EN
IImmppoorrttaanntt:: 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).
NNoottee:: Maximum pressure to the gas valve for natural
gas is 13.8" W.C. Minimum pressure is 5.0" W.C.
Maximum pressure to the gas valve for propane
is 13.8" W.C. Minimum pressure is 11.0" W.C.
NATURAL GAS ONLY
TABLE OF CUBIC FEET PER HOUR OF GAS
FOR VARIOUS PIPE SIZES AND LENGTHS
PIPE
SIZE
LENGTH OF PIPE
10 20 30 40 50 60 70
1/2 131 90 72 62 55 50 46
3/4 273 188 151 129 114 104 95
1 514 353 284 243 215 195 179
1–1/4 1060 726 583 499 442 400 368
This table is based on Pressure Drop of 0.3 inch W.C. and 0.6 SP.
GR. Gas
All gas fittings must be checked for leaks using a soapy
solution before lighting the furnace. DDOO NNOOTT CCHHEECCKK
WWIITTHH AANN OOPPEENN FFLLAAMMEE!!
For propane conversions on all other S-Series
Furnaces, use BAYLPSS400* conversion kit with
stainless steel burners.
ORIFICE SIZES
INPUT
RATING
BTUH
NUMBER OF
BURNERS
MAIN BURNER ORIFICE
DRILL SIZE
NAT. GAS
PROPANE
GAS
40,000
2 45 56
60,000
3 45 56
80,000
4 45 56
100,000
5 45 56
120,000
6 45 56
Combustion and Input Check
1. Make sure all gas appliances are off except the
furnace.
2. Clock the gas meter with the furnace operating
(determine the dial rating of the meter) for one
revolution.
3. Match the "Sec" column in the gas flow table with
the time clocked.
4. Read the "Flow" column opposite the number of
seconds clocked.
5. Use the following factors if necessary:
a. For 1 Cu. Ft. Dial Gas Flow CFH = Chart Flow
Reading ÷ 2
b. For 1/2 Cu Ft. Dial Gas Flow CFH = Chart Flow
Reading ÷ 4
c. For 5 Cu. Ft. Dial Gas Flow CFH = 10X Chart Flow
Reading ÷ 4
6. Multiply the final figure by the heating value of the
gas obtained from the utility company and compare
to the nameplate rating. This must not exceed the
nameplate rating.
Gas Flow in Cubic Feet Per Hour
2 Cubic Foot Dial
Sec. Flow Sec. Flow Sec. Flow Sec. Flow
10 732 31 236 52 141 86 85
11 666 32 229 53 138 88 83
12 610 33 222 54 136 90 81
13 563 34 215 55 133 94 78
14 523 35 209 56 131 98 75
15 488 36 203 57 128 100 73
16 458 37 198 58 126 104 70
17 431 38 193 59 124 108 68
18 407 39 188 60 122 112 65
19 385 40 183 62 118 116 63
20 366 41 179 64 114 120 61
21 349 42 174 66 111 130 56
22 333 43 170 68 108 140 52
23 318 44 166 70 105 150 49
24 305 45 163 72 102 160 46
25 293 46 159 74 99 170 43
26 282 47 156 76 96 180 41
27 271 48 153 78 94 190 39
28 262 49 149 80 92 200 37
29 253 50 146 82 89
30 244 51 144 84 87
FFuurrnnaaccee GGeenneerraall IInnssttaallllaattiioonn
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