Instructions / Assembly

14
6-583.16
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
ACT
= Manifold Pressure (in. W.C.) at Altitude –
Manifold pressure setting for the heater being
installed
BTU
TBL
= BTU/ft
3
Content of Gas –
Obtained from Tables 13.1 or 13.2 (whichever is
applicable)
BTU
ACT
= BTU/ft
3
Content of Gas –
Obtained from the local utility company
MP
SL
= Manifold Pressure (in. W.C.), at Sea Level –
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.
Table 13.3 - High Altitude Kits for HD/HDB j
US and Canada
Altitude (ft)
Model Size
30 45 60 75 100 125
Item Code Item Code Item Code Item Code Item Code Item Code
0-2,000
not
required
not
required
not
required
not
required
not
required
not
required
2,001-4,500 67248 67248 67248 67248 67248 67248
4,501-5,500 67248 67248 67248 67248 67248 67248
5,501-6,500 67248 67248 67248 67248 67248 68408
6,501-7,500 67248 67248 67248 67248 68408 68408
7,501-8,500 67248 67248 67248 67248 68408 68408
8,501-9,500 67248 67248 67248 68405 68408 68408
9,501-10,000 67248 67248 67248 68405 68408 68408
10,001-11,000 55945 55945 55945 55946 68409 68409
11,001-12,000 55945 N/A N/A 55946 68409 68409
12,001-13,000 55945 N/A N/A 55944 68411 68411
13,001-14,000 55945 N/A N/A 55944 68411 68411
j For Label Only (67248) kits, Modine part number 5H0807146005 is required
to be lled out and attached to the unit by the installer.
Please contact the local Modine representative at 1.800.828.4328 (HEAT).