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18-CE07D1-1C-EN

9

Furnace Installation Guidelines

The following sections give general guidelines for the
installation of the gas furnaces.

Safety Practices and Precautions

The following safety practices and precautions must be
followed during the installation, servicing, and
operation of this Furnace.

1. Use only with the type gas approved for this

Furnace. Refer to the Furnace rating plate.

2. Install the Furnace only in a location and position as

specified in “Locations and Clearances” of these
instructions.

3. Provide adequate combustion and ventilation air to

the Furnace space as specified in “Air for
Combustion and Ventilation” of these instructions.

4. Combustion products must be discharged

outdoors. Connect this Furnace to an approved vent
system only, as specified in the “Venting” section
of these instructions.

5. Never test for gas leaks with an open flame. Use a

commercially available soap solution made
specifically for the detection of leaks to check all
connections, as specified in the “Gas Piping”
section of these instructions.

6. Always install the Furnace to operate within the

Furnace’s intended temperature-rise range with a
duct system which has an external static pressure
within the allowable range, as specified on the unit
rating plate. Airflow within temperature rise for cfm
versus static is shown in the Service Facts
accompanying this Furnace.

7. When a Furnace is installed so that the supply ducts

carry air circulated by the Furnace to areas outside
the space containing the Furnace, the return air
shall also be handled by a duct(s) sealed to the
Furnace casing and terminating outside the space
containing the Furnace.

8. A gas-fired Furnace for installation in a residential

garage must be installed as specified in "Location
and Clearances" section of these instructions.

9. The Furnace return air temperature range is

between 55 and 80 Fahrenheit.

10. The furnace, under any circumstance may NOT be

used during construction phase of the building or
structure.

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This Furnace is certified to leak 1% or less of nominal
air conditioning CFM delivered when pressurized to .5”
water column with all inlets, outlets, and drains sealed.

General Guidelines

The manufacturer assumes no responsibility for
equipment installed in violation of any code or
regulation.

It is recommended that Manual J of the Air
Conditioning Contractors Association (ACCA) or A.R.I.
230 be followed in estimating heating requirements.
When estimating heating requirements for installation
at Altitudes above 2000 ft., remember the gas input
must be reduced. See Combustion and Input Check.

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Codes and local utility requirements governing the
installation of gas fired equipment, wiring, plumbing,
and flue connections must be adhered to. In the
absence of local codes, the installation must conform
with latest edition of the National Fuel Gas Code ANSI
Z223.1 / NFPA 54. The latest code may be obtained
from the American Gas Association Laboratories, 400
N. Capitol St. NW, Washington D.C. 20001.
1-800-699-9277 or www.aga.org.

These furnaces have been classified as Fan Assisted
Combustion system CATEGORY I furnaces as required
by ANSI Z21.47 "latest edition". Therefore they do not
require any special provisions for venting other than
what is indicated in these instructions.

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Summary of Contents for L8X1B060U3XSAA

Page 1: ...utions in the literature and on the tags stickers and labels that are attached to the equipment May 2020 1 18 8 C CE E0 07 7D D1 1 1 1C C E EN N Upflow Horizontal Left Right Gas Fired Single Stage Ind...

Page 2: ...EC CT TR RI IC CA AL L S SH HO OC CK K F FI IR RE E O OR R E EX XP PL LO OS SI IO ON N H HA AZ ZA AR RD D F Fa ai il lu ur re e t to o f fo ol ll lo ow w t th hi is s W Wa ar rn ni in ng g c co ou ul...

Page 3: ...I IN NG G E EL LE EC CT TR RI IC CA AL L S SH HO OC CK K H HA AZ ZA AR RD D F Fa ai il lu ur re e t to o f fo ol ll lo ow w t th hi is s W Wa ar rn ni in ng g c co ou ul ld d r re es su ul lt t i in n...

Page 4: ...y y i in ns sp pe ec ct te ed d t to o i in ns su ur re e n no o c cr ra ac ck ks s o or r o ot th he er r p po ot te en nt ti ia al l a ar re ea as s f fo or r f fl lu ue e g ga as s l le ea ak ks s...

Page 5: ...c co ou ul ld d r re es su ul lt t i in n p pe er rs so on na al l i in nj ju ur ry y D Do o N NO OT T t to ou uc ch h i ig gn ni it te er r I It t i is s e ex xt tr re em me el ly y h ho ot t C CA AU...

Page 6: ...te ed d t to o t th he e v ve en nt ti in ng g s sy ys st te em m T Tu ur rn n o on n a an ny y e ex xh ha au us st t f fa an ns s s su uc ch h a as s r ra an ng ge e h ho oo od ds s s so o t th he e...

Page 7: ...put Check 17 Gas Valve Adjustment 18 High Altitude Derate 19 General Venting 20 Air for Combustion and Ventilation 22 Duct Connections 25 Return Air Filters 32 Electrical Connections 34 Field Wiring 3...

Page 8: ...ting ventilating and air conditioning equipment can be hazardous and requires specific knowledge and training Improperly installed adjusted or altered equipment by an unqualified person could result i...

Page 9: ...inal air conditioning CFM delivered when pressurized to 5 water column with all inlets outlets and drains sealed General Guidelines The manufacturer assumes no responsibility for equipment installed i...

Page 10: ...t permit removal of the largest component 4 Are there at least 3 inches of clearance between the Furnace combustion air openings in the front panel and any closed panel or door provided 5 Are the vent...

Page 11: ...ent wave solutions b Chlorinated waxes and cleaners c Chlorine based swimming pool chemicals d Water softening chemicals e De icing salts or chemicals f Carbon tetrachloride g Halogen type refrigerant...

Page 12: ...12 18 CE07D1 1C EN Outline Drawings Table 2 17 5 Width Cabinet...

Page 13: ...l furnace installation in an attic should be on a service platform large enough to allow for proper clearances on all sides and service access to the front of the furnace See the Line contact is only...

Page 14: ...al Shut off Main Manual Shut off Valve Ground Union Joint Drip Leg 1 8 NPT Test Fitting Furnace in upflow orientation with gas piping on right Note For ease of installation optional accessory part PIP...

Page 15: ...ing out bottom Automatic Gas Valve with Manual Shut off Main Manual Shut off Valve Ground Union Joint Drip Leg 1 8 NPT Test Fitting Furnace in horizontal right orientation with gas piping out top Auto...

Page 16: ...y piping system during any pressure testing of that system at test pressures in excess of 1 2 psig 3 5 kPa The furnace must be isolated from the gas supply piping by closing its individual manual shut...

Page 17: ...utility company and compare to the nameplate rating This must not exceed the nameplate rating Gas Flow in Cubic Feet Per Hour 2 Cubic Foot Dial Sec Flow Sec Flow Sec Flow Sec Flow 10 732 31 236 52 141...

Page 18: ...ude d Replace and tighten the regulator cover screw securely 6 To adjust the light off manifold pressure remove the low LO adjustment regulator cover screw a To increase outlet pressure turn the regul...

Page 19: ...ust be changed PART NUMBERS FOR REPLACEMENT ORIFICES DRILL SIZE PART NUMBER B60 23 B80 15 Turn the main Gas Valve toggle switch within the unit to the OFF position Turn the external gas valve to ON Pu...

Page 20: ...SONRY CHIMNEYS Venting of fan assisted appliances into a lined internal masonry chimney is allowed only if it is common vented with at least one natural draft appliance OR if the chimney is lined with...

Page 21: ...on of the National Fuel Gas Code ANSI Z223 1 latest edition 10 Vent connectors serving appliance vented by natural draft or non positive pressure shall not be connected into any portion of a mechanize...

Page 22: ...air and fireplaces must be considered to avoid unsatisfactory Furnace operation Furnace location may be in an unconfined space or a confined space Unconfined space are installations with 50 cu ft or m...

Page 23: ...d washing material Note Extended warranties are not available in some instances Extended warranty does not cover repairs to equipment installed in establishments with corrosive atmospheres including b...

Page 24: ...e with the outdoors Refer to the Minimum Free Area in square inches for confined spaces table for minimum open areas required CONFINED SPACE AIR FROM OUTDOORS CONFINED SPACE OUTLET OUTDOOR AIR DUCTS I...

Page 25: ...aces not equipped with a cooling coil it is recommended that the outlet duct be provided with a removable access panel The opening shall be accessible when the furnace is installed and shall be of suc...

Page 26: ...uide holes are located on the coil 4 Seal per local codes and requirements Furnace in Horizontal Left with Coil 1 Bend furnace flanges up 2 Support the furnace and coil independently 3 Screw through t...

Page 27: ...port the furnace and coil independently 3 Match the coil up flush to the back of the furnace 4 Seal per local codes and requirements Note Flat or dedicated horizontal coils may require flanges to be b...

Page 28: ...rain pan must be installed in all applications over a finished ceiling to prevent property damage Minimum return air is 55oF and maximum is 80oF Upflow Furnace with Bottom Return in Closet with Remote...

Page 29: ...rom a remote location 3 Install filter at a remote location 4 Seal per local codes and requirements Upflow Furnace with Bottom Return Mounted on a Ducted Pedestal with Filter Box 1 Remove the bottom p...

Page 30: ...ote The furnace bottom pedestal must be a minimum of 6 in height 3 Match the filter cabinet flush to the back and bottom sides of the furnace cabinet and secure in place with screws 4 Mark the two are...

Page 31: ...turns Important One of the sides must have a transition to allow the thermostat wiring to exit the cabinet Important If a transition is not a viable option a hole will need to be drilled in the side o...

Page 32: ...rn air duct systems should provide for installation of return air filters 1 Determine the appropriate position to set the furnace in order to connect to existing supply and return ductwork 2 For upflo...

Page 33: ...ts to the furnace If only the front of the furnace is accessible it is recommended that both supply and return air plenums are removable 3 When replacing a furnace old duct work should be cleaned out...

Page 34: ...d furnace control is polarity sensitive The hot leg of the 120V power supply must be connected to the black power lead as indicated on the wiring diagram Refer to the SERVICE FACTS literature and unit...

Page 35: ...off For complete shutdown Turn the toggle or control switch located on the main gas valve inside the unit to the OFF position and the external main gas shutoff valve to the OFF position Disconnect th...

Page 36: ...otated if needed Table 5 Venting Options for Upflow Applications Refer to the illustrations below to find the approved venting options for upflow furnace Note Left side venting is not allowed for upfl...

Page 37: ...cabinet and remove the cutout if necessary Note When rotating the inducer it may be necessary to cut the wire tie A new wire tie must be installed once the inducer is rotated Note Self tapping screws...

Page 38: ...ded for attaching the vent pipe to the inducer outlet Horizontal left orientation with top venting Before proceeding lay unit on its back to make the conversion easier The following changes need to be...

Page 39: ...ucer RPM Feedback Inducer Ignitor Connector Not Used Heat Delay ID Plug Connector Status LED Neutral Connections 12 Pin Connector Line Motor Transformer Humidifier EAC Flame Rod Chassis Ground Heat Fa...

Page 40: ...e Airflow CFM Vs External Static Pressure in W C Model Tap 0 1 0 3 0 5 0 7 0 9 L8X1B060U3PXAA 1 SCFM 829 689 549 410 270 Watts 83 95 107 119 130 2 SCFM 1087 985 884 782 681 Watts 163 179 195 210 226 3...

Page 41: ...ration is 90 seconds Once the span test fails the fault is displayed until the lockout expires or Call For Heat is removed Could be blocked vent poor air hose connection or an open circuit in the indu...

Page 42: ...be released within 5 seconds after the LED begins this flash sequence 1 Flash Call for Heating GREEN N A W or W G or W Y or W Y G 2 Flashes Call for Cooling GREEN N A Y or Y G 3 Flashes Continuous Fan...

Page 43: ...e e If additional retries are needed the ignitor warm up time is successively increased to a maximum of 30 seconds 5 After the ignitor warm up the 1st stage of the gas valve is energized allowing gas...

Page 44: ...nd Blower On Delay the indoor blower ramps to the HP heating airflow N No ot te e The blower on delay can be field adjusted to 45 seconds if desired but cannot be turned OFF 4 When the temperature is...

Page 45: ...18 CE07D1 1C EN 45 N No ot te es s...

Page 46: ...46 18 CE07D1 1C EN N No ot te es s...

Page 47: ...18 CE07D1 1C EN 47 N No ot te es s...

Page 48: ...lications For more information please visit www trane com or www americanstandardair com The manufacturer has a policy of continuous data improvement and it reserves the right to change design and spe...

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