American Standard BAYLPSS410B Assembly instructions

ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES
IMPORTANT — This Document is customer property and is to remain with this unit. Please return to service information pack upon completion of work.
s
WARNING
This conversion kit shall be installed by a qualified service
agency in accordance with manufacturer's instructions
and all applicable codes and requirements of the author-
ity having jurisdiction. If the information in these instruc-
tions is not followed exactly, a fire, explosion or production
of carbon monoxide may result causing property damage,
personal injury or loss of life. The qualified service agency
is responsible for the proper installation of the kit. The
installation is not proper and complete until the opera-
tion of the converted furnace is checked as specified in the
manufacturer's instructions supplied with the kit.
sWARNING
EXPLOSION HAZARD
Failure to follow this warning could result in serious
personal injury, property damage, or death. Propane gas
is heavier than air and may collect in any low areas or
confined spaces. In addition, odorant fade may make the
gas undetectable except with a warning device. If the gas
furnace is installed in a basement, an excavated area, or
confined space, it is strongly recommended to contact a
gas supplier to install a gas detecting warning device in
case of a leak. The manufacturer of your furnace does not
test any detectors and makes no representations regarding
any brand of detector.
A. GENERAL
These instructions describe converting gas furnaces from natural
gas to propane gas.
Conversion from natural gas to propane gas is a critical proce-
dure, therefore, these INSTRUCTIONS MUST BE FOLLOWED
CLOSELY.
B. INSPECTION
1. Unpack all components of the propane conversion kit.
2. Check carefully for any shipping damage. If any damage is
found, this must be reported immediately and a claim made
against the transportation company.
3. Check to be sure all components are in the package. Any
missing components should be reported to your supplier at
once and replaced with authorized components only.
s
WARNING
Replace and/or tighten all plugs removed or loosened when
adjusting gas pressure. Leak check the fittings before
placing the furnace into regular service. Failure to fol-
low this warning could result in fire, explosion or property
damage.
PROPANE ORIFICE
MODELS IN 1000's
BTUH
QUANTITY
OF ORIFICE
ORIFICE
SIZE
26 2 59
Installer’s Guide
BAYLPSS410B
Propane Conversion Kit for S8 & A8-A026 Furnaces
EACH KIT CONTAINS:
Qty Description Part Number
2 Burner D345196P02
1 Installer's Guide 18-CH98D1-2-EN
2 Orifice main burner #59 B138253P31
1 Propane Label B342003P13
1 Conversion Responsibility Label B342003P13
1 Kit Spring Conversion A138928P01
1 Pressure Tap Adapter Kit (KIT07611) A342055P01
18-CH98D1-2-EN
C. CONVERSION INSTRUCTIONS:
S-Series Furnaces
sWARNING
INSTALLATION WARNING - HIGH VOLTAGE MOVING PARTS
Bodily injury can result from high voltage electrical
components, fast moving fans, and combustible gas. For
protection from these inherent hazards during installation
and servicing, the main gas valve must be turned off and the
electrical supply must be disconnected. If operating checks
must be performed with the unit operating, it is the techni-
cian’s responsibility to recognize these hazards and proceed
safely.
Failure to follow this Warning could result in property
damage, severe personal injury, or death.
sWARNING
!
This product can expose you to chemicals, including
lead, which are known to the State of California to cause
cancer and birth defects of other reproductive harm. For
more information go to www.p65Warnings.ca.gov.
CAUTION
The gas supply shall be shut off prior to disconnecting the
electrical power, before proceeding with the conversion.
1. Turn off the gas supply and electrical power. Set the thermo-
stat to off position.
2. Remove the electrical connector from the gas valve.
Note: Failure to disconnect the connector could lead to
premature failure of the gas valve due to damage to the
connection terminals.
3. Remove screws and detach manifold pipe (item 1) from
burner box (item 2). See Figure 1 for references.
4. Remove screws and detach burner plate (item 3) from burner
box.

Page 2 18-CH98D1-2-EN
Installer's Guide
5. Remove screws and detach burner clamp (item 4) from
burner box.
CAUTION
When removing extreme right and left burners, use caution
not to break the ignitor assemblies and flame sensors.
6. Remove all burners (item 5) from the burner holder (item 6).
Discard burners.
7. Record the orifice depth prior to removing all the main burner
natural gas orifices(s) (item 7). Remove & discard the natural
gas orifices.
8. Install the #59 propane orifices to the same depth as the
orifices supplied with the equipment.
CAUTION
Check the ignitor and flame sensor alignments when replac-
ing extreme right and left burners, use caution not to break
the ignitor assemblies.
9. Install stainless steel burners supplied with kit.
10. Re-install burner clamp to burner box.
11. Re-install burner plate to burner box.
12. Re-install manifold pipe to burner box.
FIGURE 2
SINGLE STAGE GAS VALVE ONLY
Outlet Pressure Boss
1st Stage (LO) Manifold Pressure Adjustment
Inlet Pressure
Boss
Gas Valve On/Off
Toggle Switch
White-Rodgers 36J
Models using the 36J single-stage gas valve:
See Figures 2 and 3.
13. Perform the following steps to install the LP Spring:
a. Remove the 1st Stage (LO) regulator screw cap. Retain
the screw cap for reassembly.
b. Turn the plastic adjustment screw counter-clockwise
until the screw can be easily removed.
c. Carefully remove the natural gas spring with piece of
thermostat wire or similar material.
཰
ཱུ
ཱི
ུ
ྲྀ
ཱ
ི
FIGURE 1
CAUTION
Be careful not to damage the engagement threads of the
spring cavity.
d. Discard the natural gas spring and insert the "white
colored" LP spring. Center the spring within the cavity to
avoid damaging the spring or cross threading the
adjustment screw.
e. Re-install the plastic adjustment screw turning it clock-
wise approximately 4-5 turns.
FIGURE 3
14. Apply "PROPANE" label to the rating plate of the furnace.
15. Apply conversion label to the front of the furnace.
16. Fill out the Conversion Responsibility Label and apply to the
inside of the furnace door.
17. Turn on gas supply and electrical power.
18. For complete detailed sequence of operation, refer to the
installation instructions or Service Facts with the furnace.
19. Set the thermostat to call for operation.
20. Check the complete operation of the unit. Check the mani-
fold gas pressure as specified in the installation instruc-
tions of the furnace Installer's Guide.

Page 318-CH98D1-2-EN
Installer's Guide
Fuel Manifold Pressure Settings (inches w.c.)
Models Fuel Manifold Settings
S8 & A8-A026 Natural Gas 3.5" W.C.
Propane Gas 10.0" W.C.
6. Cycle the valve several times to verify regulator setting.
a. Repeat steps 5-6 if needed.
7. Turn off all electrical power to the system.
8. Remove the manometer and flexible tubing and tighten the
pressure tap screw.
9. Using a leak detection solution or soap suds, check for leaks
at the pressure outlet boss and pressure tap test screw.
10. Turn on system power and check operation of the unit.
E. AIRFLOW ADJUSTMENT
1. Check inlet and outlet air temperatures to make sure
they are within the ranges specified on the furnace rating
nameplate.
If the airflow needs to be increased or decreased, see the
Installer's Guide for information on changing the speed of the
blower motor.
D. GAS VALVE ADJUSTMENT
Changes can be made by adjusting the manifold pressure, or
changing orifices (orifice change may not always be required). To
adjust the manifold pressure:
1. Turn off all electrical power to the system.
2. Loosen (Do Not remove) the pressure tap test set screw one
turn with 3/32" hex wrench.
Note: The pressure tap adjustment kit (KIT07611) contains a
3/32" hex wrench, a 5/16" hose and a connector and can be
ordered through Global Parts.
3. Attach a manifold pressure gauge with flexible tubing to the
outlet pressure boss marked "OUT P" on White- Rodgers
gas valve model 36J.
4. Turn on system power and make a call for heating.
5. To adjust outlet pressure, remove the adjustment regulator
cover screw.
a. To increase outlet pressure, turn the regulator adjust
screw clockwise.
b. To decrease outlet pressure, turn the regulator adjust
screw counterclockwise.
c. Adjust regulator until pressure shown on manometer
matches the pressure specified in the table.
Note: Maximum pressure to the gas valve for natu-
ral gas is 13.8" W.C. Minimum pressure is 5.0" W.C.
Maximum pressure to the gas valve for propane is
13.8" W.C. Minimum pressure is 11.0" W.C.
The input of no more than nameplate rating and no less
than 93% of the nameplate rating, unless the unit is de-
rated for high altitude. See high altitude kit for de-rating
instructions when installing above 2000 ft.
d. Replace and tighten the regulator cover screw securely.

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© 2020
18-CH98D1-2-EN 14 Jul 2020
Supersedes 18-CH98D1-1 (September 2018)