Goodman HAMFK User manual

APPLICATION
This kit is to be used for high altitude conversion of modu-
lating gas furnaces equipped with WHITE-RODGERS 36J27
SERIES GAS VALVES ONLY (Figure 1). This kit also contains
parts and instructions for conversion to L.P. This kit is not
applicable in Canada. Parts apply as shown in the table be-
low.
Natural Gas
Orifices Propane Gas Orifices
B2589907 (#49) B2589908 (#56)
Above 7,000 Feet
Table 1
HAMFK - HIGH ALTITUDE CONVERSION KIT FOR
34"MODULATING FURNACE
FURNACES EQUIPPED WITH WHITE-RODGERS 36J27 SERIES GAS VALVES
DONOTDISCARD-RETAINTHESEINSTRUCTIONSFORFUTUREUSE.
Goodman Manufacturing Company, L.P.
5151 San Felipe, Suite 500 • Houston, TX 77056
©2018 Goodman Manufacturing Company, L.P.
isaregistered trademark of Maytag Corporation or its related companies and isused under license
to Goodman Company, L.P., Houston, TX, USA. All rights reserved.
IOG-7005
December 2018
Figure 1 - 36J27 Modulating Gas Valve
Q'ty Description
1 Needle-Nose Pliers
17/16"BoxWrench
11/4"NutDriver
1 1/8" Flat Blade Screwdriver
1Manometer to read inlet and outlet pressure of the
gas valve (minimum range: 0"- 20" W.C.)
Gas leak detection solution like a soap and water
solution. Always wipe the solution from the joints
when testing is completed.
Required Tools for Conversion Kit
Only personnel that have been trained to install, adjust, service
or repair (hereinafter, “service”) the equipment specified in
this manual should service the equipment. The manufacturer
will not be responsible for any injury or property damage
arising from improper service or service procedures. If you
service this unit, you assume responsibility for any injury or
property damage which may result. In addition, in jurisdictions
that require one or more licenses to service the equipment
specified in this manual, only licensed personnel should service
the equipment. Improper installation, adjustment, servicing
or repair of the equipment specified in this manual, or
attempting to install, adjust, service or repair the equipment
specified in this manual without proper training may result in
product damage, property damage, personal injury or death.
Cancer and Reproductive Harm -
www.P65Warnings.ca.gov
PROP 65 WARNING
FOR CALIFORNIA CONSUMERS
0140M00513-A

2
HIGHALTITUDE CONVERSION
1. Shut OFF gas supply at manual shutoff and turn OFF power to the furnace.
2. Remove access door.
3. Disconnect wiring from the gas valve.
4. Remove the gas manifold assembly by removing the four screws connecting it to the burner bracket. See Figure 2 below.
Figure 2 - Gas Manifold Removal
5. Remove factory installed orifices from gas manifold using 7/16" box end wrench.
For Natural Gas Operation, complete steps 6 & 7; For L.P. Gas Operation, complete steps 8 through 13.
6. Visually inspect the high altitude Natural Gas orifices (B2589907) for damage and drill size (#49) before installation.
Install orifices and tighten with a box-end wrench, take care to avoid cross threading or over tightening.
7. Attach the gas manifold assembly to the burner bracket using the four screws removed in step 4.
8. Visually inspect the high altitude L.P. Gas orifices (B2589908) for damage and drill size (#56) before installation. Install
orifices and tighten with a box-end wrench, take care to avoid cross threading or over tightening.
9. Remove the “NAT. GAS” label from the top of the 36J27 gas valve.
10. Use needle nose pliers to place the jumper (see enclosed F92-1021 kit) on the receptacle. Make sure both pins engage the
jumper.
11. Place the “L.P.” label (see the enclosed F92-1021 kit) on the gas valve, covering the jumper installed in step 8.
12. Attach the “WARNING” label (see the enclosed F92-1021 kit) to the gas valve where it can be readily be seen.
13. Attach the gas manifold assembly to the burner bracket using the four screws removed in step 4.
GAS SUPPLY PRESSURE CHECK
Gas Supply Pressure must be verified with all appliances in operating mode. See Table 2 for the required gas pressure.
1. Turn OFF electrical power & gas supply to the unit.
2. Use 3/16"Allen wrench to remove 1/8" inlet pressure tap from the gas valve.
3. Connect a calibrated water manometer or appropriate gas pressure gauge at the gas valve inlet pressure tap.
4. Turn ON the power and gas, put the unit into heating cycle on high fire (100%) to verify proper supply pressure. If gas
supply is not within the range specified, contact your gas provider.
Manifold
Gas Valve
4 Screws

3
5. Turn OFF gas to the unit at the manual shutoff valve and disconnect manometer. Reinstall line pressure tap plug. The
pressure tap must be leak checked after resealing.
GAS TYPE MIN MAX
NATURAL 5" w.c. 10" w.c.
L.P. 11" w.c. 13" w.c.
GAS SUPPLY PRESSURE RANGE
Table 2
MANIFOLDPRESSURECHECK
Refer to table 3 for proper Natural Gas manifold pressure & table 4 for proper L.P. Gas manifold pressure. *For L.P. Gas, the
gas valve outlet pressure is automatically adjusted for LP by installation of the jumper in step 10. Only minor changes to
manifold pressure should be made by adjusting the gas valve pressure regulator. Minor adjustments may be made by
removing the access plug and turning the fine-adjustment screw with 1/8" flat blade screwdriver. Adjustment should only be
done with monitoring outlet pressure with a suitable manometer properly attached to the outlet pressure tap.
1. Turn OFF electrical power &gas supply to the unit.
2. Use a 3/16"Allen wrench to remove 1/8" outlet pressure tap from the gas valve.
3. Connect a calibrated water manometer or appropriate gas pressure gauge at the gas valve outlet pressure tap.
4. Turn ON the power and gas, put the unit into heating cycle on high fire (100%).
5. Remove the White cap located on top the gas valve next to the + &- symbols.
6. Use a 1/8" flat blade screwdriver to turn the fine adjustment screw, clockwise (+) to increase manifold pressure, counter
clockwise (-) to decrease manifold pressure.
7. After adjustment is made, turn OFF gas to the unit at the manual shutoff valve and disconnect manometer. Reinstall line
pressure tap plug. The pressure tap must be leak checked after resealing.
Natural Gas Manifold Pressure Range
Low Stage High Stage
.85" w.c. - 1" w.c. 3.2" w.c. - 3.8" w.c.
Table 3
Low Stage High Stage
2.3" to 2.7" w.c. 9.7" to 10.3" w.c.
Propane Gas Manifold Pressure Range
Table 4

4
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NOTE: SPECIFICATIONSANDPERFORMANCEDATALISTED HEREINARESUBJECTTOCHANGEWITHOUTNOTICE
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