High Altitute Deration Chart - Winchester WG SERIES Installation Instructions Manual

Winchester Gas Furnace
HIGH ALTITUDE DERATE CHART - MAIN BURNER ORIFICE SIZE
60,000 BTU FURNACE
ELEVATION
PART NO ORIF DIA
SEA LEVEL 75AG-144 0.144
2000 75AG-1405 0.1405
3000 75AG-1405 0.1405
4000 75AG-136 0.136
5000 75AG-136 0.136
6000 75AG-136 0.136
7000 75AG-1285 0.1285
8000 75AG-1285 0.1285
9000 75AG-1285 0.1285
10000 75AG-120 0.120
ELEVATION 60,000 BTU FURNACE
PART NO ORIF DIA
SEA LEVEL 75AG-086 0.086
2000 75AG-082 0.082
3000 75AG-082 0.082
4000 75AG-082 0.082
5000 75AG-081 0.081
6000 75AG-0785 0.0785
7000 75AG-0785 0.0785
8000 75AG-076 0.076
Table shows 4% Input Reduction per 1,000 feet elevation
Reference: NFPA No. 54, ANSI Z 223.1 National Fuel Gas Code
For canadian High Alitude (2,000-4,500 feet), reduce gas pressure to burner manifold (manifold Ps.) to 3.0" W.C. for Natural Gas and 9.0 W.C. for LP (Propane) Gas
HIGH ALTITUDE ORIFICE CONVERSION KITS
KIT PART NUMBER ALTITUDE
G18HA0601 0 - 5000 FT
G18HA0602 6,000 - 10,000 FT
G18HA0701 0 - 5000 FT
G18HA0702 6,000 - 10,000 FT
G18HA0771 0 - 5000 FT
G18HA0772 6,000 - 10,000 FT
G18HA0901 0 - 5000 FT
G18HA0902 6,000 - 10,000 FT
Winchester by Mortex Products Inc. / Fort Worth, TX 76106
NATURAL GAS
70,000 BTU FURNACE
DRILL SIZE PART NO ORIF DIA
27 75AG-157 0.157
28 75AG-154 0.154
28 75AG-152 0.152
29 75AG-1495 0.1495
29 75AG-147 0.147
29 75AG-144 0.144
30 75AG-144 0.144
30 75AG-1405 0.1405
30 75AG-136 0.136
31 75AG-136 0.136
PROPANE (LP) GAS
70,000 BTU FURNACE
DRILL SIZE PART NO ORIF DIA
44 75AG-0935 0.0935
45 75AG-0935 0.0935
45 75AG-089 0.089
45 75AG-089 0.089
46 75AG-089 0.089
47 75AG-086 0.086
47 75AG-086 0.086
48 75AG-082 0.082
FURNACE INPUT
60,000
60,000
70,000
70,000
77,000
77,000
90,000
90,000
77,000 BTU FURNACE
DRILL SIZE PART NO ORIF DIA
22 75AG-166 0.166
23 75AG-161 0.161
24 75AG-161 0.161
25 75AG-159 0.159
26 75AG-157 0.157
27 75AG-154 0.154
27 75AG-1495 0.1495
28 75AG-147 0.147
29 75AG-144 0.144
29 75AG-1405 0.1405
77,000 BTU FURNACE
DRILL SIZE PART NO ORIF DIA DRILL SIZE
42 75AG-096 0.096
42 75AG-0935 0.0935
43 75AG-0935 0.0935
43 75AG-0935 0.0935
43 75AG-089 0.089
44 75AG-089 0.089
44 75AG-086 0.086
45 75AG-086 0.086
Installation Instructions
90,000 BTU FURNACE
DRILL SIZE PART NO ORIF DIA
19 75AG-173 0.173
20 75AG-1695 0.1695
20 75AG-166 0.166
21 75AG-166 0.166
22 75AG-161 0.161
23 75AG-159 0.159
25 75AG-157 0.157
26 75AG-154 0.154
27 75AG-152 0.152
28 75AG-147 0.147
90,000 BTU FURNACE
PART NO ORIF DIA DRILL SIZE
41 75AG-104 0.104
42 75AG-1015 0.1015
42 75AG-0995 0.0995
42 75AG-0995 0.0995
43 75AG-098 0.098
43 75AG-096 0.096
44 75AG-0935 0.0935
44 75AG-0935 0.0935
WG Installation Instructions
DRILL SIZE
17
18
19
19
20
21
22
23
24
26
37
38
39
39
40
41
42
42
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