INSTALLATION - HIGH ALTITUDE ACCESSORY KIT
If the heating value of the gas being supplied is different than
the values shown in Tables 13.1 and 13.2, use the following
equation to determine the appropriate manifold pressure for the
altitude and gas heating value being supplied.
Equation 14.1 - Manifold Pressure for Derated Gas
WHERE:
MP
= Manifold Pressure (in. W.C.) at Altitude –
ACT
Manifold pressure setting for the heater being
installed
3
BTU
= BTU/ft
Content of Gas –
TBL
Obtained from Tables 13.1 or 13.2 (whichever is
applicable)
3
BTU
= BTU/ft
Content of Gas –
ACT
Obtained from the local utility company
MP
= Manifold Pressure (in. W.C.), at Sea Level –
SL
Use 3.5" W.C. for natural gas and 10.0" W.C. for
propane gas
NOTE: Only the primary manifold pressure should be adjusted
on units equipped with two-stage or modulating gas controls.
No adjustments to the low fire manifold pressure are necessary
on these units.
14
Table 14.1 - High Altitude Kits for HD/HDB
US and Canada
30
Altitude (ft)
Item Code Item Code Item Code Item Code Item Code Item Code
not
0-2,000
required
2,001-4,500
67248 67248 67248 67248 67248
4,501-5,000
67248 67248 67248 67248 67248
5001-5500
67248 67248 55950 55946 67248
5501-6000
67248 67248 55950 55946 67248
6001-6500
67248 67248 55950 55946 67248
6501-7000
67248 67248 55950 55946 68408
7001-7500
67248 67248 55950 55946 68408
7501-8000
67248 67248 55946 55946 68408
8001-8500
67248 67248 55946 55945 68408
8501-9000
67248 67248 55946 55945 68408
9001-9500
67248 55945 55946 55945 68408
9501-10000
55945 55945 55946 55945 68408
10001-11000
55945 55945 55946 55945 68409
11001-12000
55945 55945 55946 55945 68409
12001-13000
N/A
13001-14000
N/A
j For Label Only (67248) kits, Modine part number 5H0807146005 is required
to be filled out and attached to the unit by the installer.
Please contact the local Modine representative at 1.800.828.4328 (HEAT).
6-583.19
Model Size
45
60
75
100
not
not
not
not
required
required
required
required
55945 55945
N/A
68411
55945 55945
N/A
68411
j
125
not
required
67248
67248
67248
68408
68408
68408
68408
68408
68408
68408
68408
68408
68409
68409
68411
68411