HEATING A COOLING
58DRC,58GSC Accessory Gas Conversion Kit
Installation Instructions
Gas Conversion Kit
Propane 100% Shutoff IID-To-Natural 100% Shutoff MD
For Gas-Fired Natural-Draft Furnaces
P/N 58GSC900-031-
This instruction covers the installation of gas conversion kit P/N 58GSC900-031- in a Model 58GSC Upflow or Model 58DRC Downflow Natural-Draft Furnace with the BDP 646A or the White-Rodgers 36E Gas Valve. The kit can be used to convert propane gas 100% shutoff IID controls to natural 100% shutoff IID. It is designed for use in furnaces with 30,000thru 100,000-Btuh nominal output capacity. These furnaces are to be installed only within California.
NOTE: The definition of 100% shutoff refers to automatic shutoff of the pilot and main burner gas when the ignition source is not proven.
NOTE: Read the entire instructions before starting the installation. There are additional peirts shipped in the kit. When the installation is complete, discard the unused parts.
A CAUTION
Do not use this kit to convert 58DR and 58GS units to natural gas apphcations.
A WARNING
Improper installation, adjustment, alteration, service, maintenance, or use can cause carbon monoxide poison ing, explosion, fire, electrical shock, or other conditions which may cause personal injury or property damage. Consult a qualified installer, service agency, local gas supplier, or your Distributor or Branch for information or assistance. The qualified installer or agency must use only factory-authorized kits or accessories when modi fying this product.
A WARNING
This conversion kit is to be i Carrier factory-authorized D tributor, or other qualified a accordance with the manufa instructions and all codes an ments of the authority havin tion. A failure to foUow instr result in serious injury or pr age. The qualified agency pe work assumes responsibility conversion.
A.Installation of Pilot Orifice
1.Turn off gas and electric supplies to furnace.
2.Remove control access door.
3.Disconnect pilot gas tube from gas valve.
4.Unplug electrode wire from spark generator.
5.Remove pilot assembly from burner and furnace.
6.Using backup wrench, remove gas supply tube from pilot.
7.Remove and discard propane gas pilot orifice (silver, 5/8-in. long, 0.012-in. diameter orifice, knuHj
gas supply opening of pilot.
New NOx burners must be installed along with this kit. The burners are not supplied with the kit. Order the required number of burners for the furnace being converted. Order burner P/N 309472-751.
This kit contains the following items:
Table 1 —Kit Contents
DESCRiPTiON |
P/N |
QTY |
Naturai Conversion Kit—Reguiator Spring for |
|
|
White-Rodgers 36E Gas Vaive (Siiver, 10 |
EF39ZW037 |
1 |
Turns) |
||
Naturai Regulator Spring for BDP 646A Gas |
301248-101 |
1 |
Valve (Silver, 3-Ins. Long) |
||
Pilot Orifice (Silver, 1/2-ln. Long, 0.018-In. |
307123-701 |
1 |
Orifice Diameter) |
||
Main Burner Orifice No. 45 |
LH32DB205 |
6 |
Gas Control Conversion Label |
310148-302 |
1 |
Conversion Responsibility Label |
310167-312 |
1 |
Conversion Rating Plate |
310168-312 |
1 |
installation Instructions |
58D, G-2SI |
1 |
SECONDARY
AIR SHIELD
|
MANIFOLD |
|
MANIFOLD |
UNIT RATING PLATE |
|
SUPPORT |
CONVERSION |
|
BRACKET |
||
RATING PLATE |
||
|
||
|
CONTROL |
|
RETAINING SCREWS |
COMPARTMENT |
|
(2) EACH SIDE |
SHELF |
|
-BURNER |
A80129 |
|
LOCATING PIN |
|
Fig. 1—Gas Controls
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obiigations.
Book] 1 I4 |
PC 101 Catalog No. 565-817 |
Printed in U.S.A. |
Form 58D,G-2SI Pg 1 |
11-88 |
Replaces: 58SSB-4SI |
Tab 16a 18a |
|
|
|
|
|
8.Install new natural gas pilot orifice (silver, 1/2-in. long, 0.018-in. orifice diameter).
9.Reinstall pilot gas supply tube bn pilot. When tighten
ing pilot tube, use backup wrench and turn pilot so that it will be on the same angle as before. Do not rein stall pilot at this time.
B.Installation of Main Burner Orifices
1.Remove secondary air shield.
2.Remove main burners from manifold.
3.Remove and discard No. 55 (or field-installed per local application) orifices from manifold.
4.Install No. 45 main burner orifices provided in kit. Finger-tighten orifices at least one fxill turn so as not to
cross-thread, then tighten with wrench. There are enough orifices in each kit for the largest furnace. Dis card extra orifices.
The full input rating with No. 45 main burner natural gas orifices is approved for altitudes up to 2000 ft. The input rating for altitudes above 2000 ft must be reduced by 4% for each 1000 ft above sea level. Consult the current edition of the National Fuel Gas Code NFPA No. 54/ANSI Z223.1, Part 8.1 and Appendix F Table F-4, for input adjustment for high altitude.
A88463
Fig. 2—Pilot/Burner Relationship
5.Install new burners with N0^ reduction screens on manifold. See Figs. 2 and 3 for proper orientation of burners and pilot.
6.Reinstall pilot assembly.
7.Reconnect pilot supply tube to gas valve.
8.Reconnect electrode wire to spark generator.
9.Reinstall secondary air shield.
C. Conversion of Gas Valve and Inlet Gas Pressure
Check
1.Remove regulator seal cap. See Fig. 4 for BDP 646A or Fig. 5 for White-Rodgers 36E Gas Valve.
2.Remove adjustment screw and propane gas regulator spring (red for 646A and white for 36E).
3.Install proper natural gas regulator spring (silver) pro vided in kit, in proper gas valve. See Table 1.
4.Replace regulator adjustment screw. Do not reinstall regulator seal cap at this time.
5.Remove 1/8-in. pipe plug from inlet pressure tap on gas valve.
REGULATOR
-REGULATOR
SEAL CAP
Fig. 3—Position of Pilot Electrode to Pilot |
Fig. 5—White-Rodgers Model 36E Gas Valve |
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