37
8. Re-install the burner manifold pipe assembly
following steps 4, 5, and 6 in reverse order.
9. Remove both regulator cover screws. See
FIGURE 30.
10. Remove both regulator adjustment screws
(beneath the cover screws).
11. Remove both Natural Gas regulator springs
(colour-coded silver/plain) from regulator
sleeves.
12. Insert the L.P. regulator springs (provided in
the conversion kit and colour-coded white) into
the regulator sleeves.
CONVERSION STEPS
To convert from sea level to high altitude, from
natural gas to LP gas, or from LP gas to natural
gas, follow these steps:
1. Turn off gas supply to the furnace.
2. Shut off electrical power to the furnace.
3. Remove the front door to expose the gas train
and burner assembly.
4. Unfasten the ground joint union between the
gas valve and gas supply piping if applicable.
5. Unplug the wires connected to the gas valve.
6. Unfasten the burner manifold pipe from the
burner assembly. It is held in place by 2 screws
on either end of the manifold pipe.
7. Remove the existing orifices with a
7
/
16
” socket, box or open end wrench. Install
the replacement orifices. The orifice spuds are
brass, and do not normally require pipe dope.
A light grease may be used to lubricate the
threads. The orifice spuds have tapered threads.
DO NOT OVER-TIGHTEN!!
TABLE 6 - HIGH ALTITUDE SPECIFICATIONS
(U.S.A.)
MODEL ALTITUDE
(FT)
ORIFICE SIZE (DMS)
NATURAL
LP GAS
All
0-2000
45
55
2000-3000
48
56
3000-4000
49
57
4000-5000
50
58
5000-6000
51
60
6000-7000
52
61
7000-8000
53
62
8000-9000
54
63
9000-10000
55
65
† Gas input ratings are certified for elevations to 2000 ft. For
elevations above 2000 ft, reduce ratings 2% for each 1000 ft
above sea level.
In Canada, derate the unit 5% for elevations from 2000 to
4000 ft above sea level.
TABLE 7 - HIGH ALTITUDE SPECIFICATIONS (CANADA)
MODEL ALTITUDE
(FT)
INPUT
BTU/HR
OUTPUT
BTU/HR
ORIFICE SIZE (DMS)
QTY.
NATURAL LP GAS
60
0 - 2000
60000
57000
45
55
3
2000 - 4500
54000
51300
46
56
80
0 - 2000
80000
76000
45
55
4
2000 - 4500
72000
68400
46
56
100
0 - 2000
100000
95000
45
55
5
2000 - 4500
90000
85500
46
56
120
0 - 2000
120000
114000
45
55
6
2000 - 4500
108000
102600
46
56
† Gas input ratings are certified for elevations to 2000 ft. For elevations
above 2000 ft, reduce ratings 2% for each 1000 ft above sea level.
In Canada, derate the unit 5% for elevations from 2000 to 4000 ft
above sea level.
FIGURE 30 - WHITE-RODGERS 36G54 SPRINGS
AND REGULATORS SCREWS