Filter Air Resitance; High Altitude - Lennox G40UH(X) Unit Information

FILTER AIR RESITANCE

cfm (L/s)
0 (0)
200 (95)
400 (190)
600 (285)
800 (380)
1000 (470)
1200 (565)
1400 (660)
1600 (755)
1800 (850)
2000 (945)
2200 (1040)
2400 (1130)
2600 (1225)

HIGH ALTITUDE

1
High Altitude
Orifice Kit
G40UH−1 G40UH−1
Natural Gas Only Natural Gas Only
to −14
−045− 47M82
−070
−090 47M82
−110 47M82
−135 47M82
−155 47M82
1
High Altitude
Orifice Kit
G40UH−15 G40UH−15
Natural Gas Only Natural Gas Only
and later
all models 59M17
1
Required for proper operation at altitudes from 7501 to 10,000 ft.
in. w.g. (Pa)
0.00 (0)
0.01 (0)
0.03 (5)
0.04 (10)
0.06 (15)
0.09 (20)
0.12 (30)
0.15 (35)
0.19 (45)
0.23 (55)
0.27 (65)
0.33 (80)
0.38 (95)
0.44 (110)
High Altitude Prove
Switch Kit
4501−7500 ft. 7501−10,000 ft.
(1373− 2236m) (2287 − 3048m)
56L32
49L90
49L90
49L90
49L90
High Altitude Pressure
Switch Kit
4501−7500 ft. 7501−10,000 ft.
(1373 − 2286m) (2287 − 3048m)
NO CHANGE
Page 13
HIGH ALTITUDE
All −1 to −14
models − Pressure regulator adjustment may be
required depending on altitude. See below for proper pressure
regulator setting.
Manifold Pressure (Outlet) in. w.g. (kPa)
FUEL
0−4500 4501−5500
(0−1372) (1373−1676)
Natural Gas 3.5 (.87) 3.3 (.82)
LPG/Propane
All −15 and later models
not rquired. See below for proper pressure regulator setting.
Manifold Pressure (Outlet) in. w.g. (kPa)
FUEL FUEL
Natural Gas
LPG/Propane
0−7500 ft.
(0 − 2286m)
56L32 45L60
15M22 45L60
15M22 45L60
15M22 45L60
15M22 45L60
0−7500 ft.
(0 − 2286m)
56L32 25W20
ALTITUDE ft. (m)
5501−6500 6501−7500
(1677−1981) (1982−2286)
3.2 (.80) 3.1 (.77)
10.0 (2.49)
− Pressure regulator adjustment is
ALTITUDE ft. (m)
0 − 10,000 (0 − 3048)
3.5 (.87)
10.0 (2.49)
LPG/Propane Kit
7501−10,000 ft.
(2286 − 3048m)
47M81
47M81
47M81
47M81
47M81
LPG/Propane Kit
7501−10,000 ft.
(2286 − 3048m)
25W21