Carrier 58GSC User Manual
58DRC,58GSC
HEATING A COOLING
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 30,000- thru 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 WARNING
This conversion kit is to be installed by a
Carrier factory-authorized Dealer, Dis
tributor, or other qualified agency in
accordance with the manufacturer’s
instructions and all codes and require
ments of the authority having jurisdic
tion. A failure to foUow instructions could
result in serious injury or property dam
age. The qualified agency performing this
work assumes responsibility for this
conversion.
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.
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
Naturai Conversion Kit—Reguiator Spring for
White-Rodgers 36E Gas Vaive (Siiver, 10
Turns)
Naturai Regulator Spring for BDP 646A Gas
Valve (Silver, 3-Ins. Long)
Pilot Orifice (Silver, 1/2-ln. Long, 0.018-In.
Orifice Diameter) 307123-701 1
Main Burner Orifice No. 45
Gas Control Conversion Label
Conversion Responsibility Label 310167-312
Conversion Rating Plate 310168-312
installation Instructions
P/N
EF39ZW037 1
301248-101 1
LH32DB205 6
310148-302
58D, G-2SI
QTY
1
1
1
1
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.
SECONDARY
AIR SHIELD
CONTROL
SHELF
UNIT RATING PLATE
CONVERSION
RATING PLATE
MANIFOLD
SUPPORT
BRACKET
RETAINING SCREWS
(2) EACH SIDE
-BURNER
LOCATING PIN
COMPARTMENT
Fig. 1—Gas Controls
MANIFOLD
A80129
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obiigations.
Book] 1 I 4 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.
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
Fig. 2—Pilot/Burner Relationship
Fig. 3—Position of Pilot Electrode to Pilot
A88463
-REGULATOR
SEAL CAP
Fig. 5—White-Rodgers Model 36E Gas Valve
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