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18-CE16D1-1B-EN

Setting Airflow

With all ductwork connected and a clean filter in place, measure the
External Static Pressure (ESP) of the unit in locations below. Use the
appropriate airflow table for the furnace and outdoor unit installed.

Note:

Airflow tables are located in the Service Facts literature.

Measurements must be made prior to the evaporator coil, if equipped,
and after the filter.

Note:

Check out fieldtechhelp.com to watch a short video.

Evaporator

Coil

Clean

Filter

Furnace Airflow (CFM) Vs. External Static Pressure (in. W.C.)

Model

Tap

0.1

0.3

0.5

0.7

0.9

S8B1B080M4PS
S8X1B080M4PS
S8X2B080M4PS

633

297

—

957

800

719

428

213

1220

1080

940

800

660

1403

1298

1192

1087

(a)

981

1524

1428

1336

1248

1164

1684

1574

1544

1401

1337

1700

1625

1551

1476

(b)

1401

(c)

1858

1790

1723

1656

1589

1967

1898

1829

1760

1691

This is an Example Airflow Table only. See Service Facts for complete Airflow data.

(a)

Exapmple 1, 2

(b)

Example 1

(c)

Example 2

Example 1: S8X2B080M4PS (Default Tap 7)

Cooling / HP

•

3 Ton Single Stage Outdoor

•

Total ESP = 0.7” W.C.

•

Required Airflow = 1050 cfm (3T x 350 cfm/ton)

•

New Tap Number = Tap 4

Example 2: S8X2B080M4PS (Default Tap 3 & 7)

•

4 Ton Two Stage Outdoor

•

Total 2

Stage ESP = 0.9” W.C.

•

Total 1

Stage ESP = 0.6” W.C.

•

Required 2

Stage Airflow = 1400 cfm (4T x 350

cfm/ton)

•

Required 1

Stage Airflow = 1050 cfm (2

stage

airflow x .75)

•

New 2

Stage Tap Number = Tap 7 (no change)

•

New 1

Stage Tap Number = Tap 4

Содержание S8B1B080M4PSBA

Страница 1: ...t November 2020 1 18 8 C CE E1 16 6D D1 1 1 1B B E EN N Upflow Downflow Horizontal Gas Fired 1 Stage and 2 Stage Induced Draft Furnaces with High Efficiency Motor U Up pf fl lo ow w D Do ow wn nf fl l...

Страница 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...

Страница 3: ...pe er rs so on na al l i in nj ju ur ry y o or r d de ea at th h D Do o N NO OT T a at tt te em mp pt t t to o m ma an nu ua al ll ly y l li ig gh ht t t th he e f fu ur rn na ac ce e W WA AR RN NI IN...

Страница 4: ...f b be ef fo or re e s se er rv vi ic ci in ng g f fi il lt te er rs s t to o a av vo oi id d c co on nt ta ac ct t w wi it th h m mo ov vi in ng g p pa ar rt ts s W WA AR RN NI IN NG G C CA AR RB BO...

Страница 5: ...an n e ex xt te er rn na al l o ov ve er rf fl lo ow w d dr ra ai in n p pa an n b be e i in ns st ta al ll le ed d i in n a al ll l a ap pp pl li ic ca at ti io on ns s o ov ve er r a a f fi in ni i...

Страница 6: ...ow ws s b be et tw we ee en n t th he e s sp pa ac ce e i in n w wh hi ic ch h t th he e a ap pp pl li ia an nc ce e s s c co on nn ne ec ct te ed d t to o t th he e v ve en nt ti in ng g s sy ys st...

Страница 7: ...High Altitude Derate 20 General Venting 22 Air for Combustion and Ventilation 24 Duct Connections 27 Return Air Filters 37 Electrical Connections 39 Field Wiring 39 Twinning 40 General Start up and A...

Страница 8: ...s only when in bottom return application FLRSF1255 1 Filter replacement Qty 12 BAYSF1255BA BAYVENT600A Internal venting kit B C and D Furnaces in Downflow orientation BAYVENT800B Masonry Chimney Vent...

Страница 9: ...nd 80 Fahrenheit 80 models 55 F 90 models 45 F h Clean the Furnace duct work and components upon substantial completion of the construction process and verify Furnace operating conditions including ig...

Страница 10: ...centralized for heat distribution as practical 2 Do all clearances between the Furnace and enclosure equal or exceed the minimums stated in Clearance Table below Minimum clearance to combustible mater...

Страница 11: ...be located or protected to avoid physical damage from vehicles 10 The gas furnace must not be located where excessive exposure to contaminated combustion air will result in safety and performance rel...

Страница 12: ...12 18 CE16D1 1B EN Outline Drawings Table 2 17 5 Width Cabinet...

Страница 13: ...18 CE16D1 1B EN 13 Table 3 24 5 Width Cabinet O Ou ut tl li in ne e D Dr ra aw wi in ng gs s...

Страница 14: ...n by placing the furnace on its left or right side as viewed from the front in the vertical position The horizontal furnace installation in an attic should be on a service platform large enough to all...

Страница 15: ...t side of the furnace in the upflow orientation Automatic Gas Valve with Manual Shut off Main Manual Shut off Valve Ground Union Joint Drip Leg 1 8 NPT Test Fitting Furnace in downflow orientation wit...

Страница 16: ...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...

Страница 17: ...hut off valve during any pressure testing of the gas supply piping system at test pressures equal to or less than 1 2 psig 3 5 kPa Note Maximum pressure to the gas valve for natural gas is 13 8 W C Mi...

Страница 18: ...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...

Страница 19: ...no less than 93 of the nameplate rating unless the unit is derated for high altitude d Replace and tighten the regulator cover screw securely e Remove call for second stage heat first stage heat is no...

Страница 20: ...thin the unit to the OFF position Turn the external gas valve to ON Purge the air from the gas lines After purging check all gas connections for leaks with a soapy solution DO NOT CHECK WITH AN OPEN F...

Страница 21: ...2 HIGH SET PT S8 1B080M4P BAYSWT15AHALTAA NA 0 60 0 05 WC S8 1D120M5P BAYSWT14AHALTAB NA 0 50 0 05 WC S8X2B080M4P BAYSWT18AHALTAA 0 37 0 05 WC 0 60 0 05 WC S8X2D120M5P BAYSWT24AHALTAA 0 45 0 05 WC 0 5...

Страница 22: ...NTERNAL MASONRY 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...

Страница 23: ...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...

Страница 24: ...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 more per 1000 BTU hr inp...

Страница 25: ...arranties are not available in some instances Extended warranty does not cover repairs to equipment installed in establishments with corrosive atmospheres including but not limited to dry cleaners bea...

Страница 26: ...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...

Страница 27: ...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...

Страница 28: ...oles located on the furnace flange 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...

Страница 29: ...t the furnace and coil independently Note Flat or dedicated horizontal coils may require flanges to be bent upward Downflow Furnace with Coil 1 Bend furnace side flanges down 2 Support the furnace and...

Страница 30: ...no Coil Important A BAYBASE is required when installing the furnace on a combustible floor 1 Bend furnace flanges up 2 Attach ducting 3 Seal per local codes and requirements F Fu ur rn na ac ce e G G...

Страница 31: ...y An external overflow drain pan must be installed in all applications over a finished ceiling to prevent property damage Upflow Furnace with Bottom Return in Closet with Remote Filter 1 Remove the bo...

Страница 32: ...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...

Страница 33: ...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...

Страница 34: ...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...

Страница 35: ...p of the furnace 3 Install remote filter 4 Seal per local codes and requirements Downflow Furnace with Top Return and Plenum 1 Remove the top plate 2 Attach the plenum ducting to the top of the furnac...

Страница 36: ...Furnace with Top Return and Plenum with Filter Box 1 Remove the top plate 2 Attach the filter box to the top of the furnace 3 Attach ducting 4 Seal per local codes and requirements FILTER F Fu ur rn...

Страница 37: ...Installations All return 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 retu...

Страница 38: ...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 Thin cloths should be plac...

Страница 39: ...stat Furnace Outdoor Unit No Transformer O R X2 Y2 NOTES 1 HP Wiring used for Heat Pump systems 2 Y1 and or Y2 must connect from the thermostat to the IFC for proper airflow 3 A TCONT824 thermostats d...

Страница 40: ...OR BOTH FURNACES 5 WHEN TWINNING THE S8B1 S8X1 FURNACES DISREGARD THE W2 AND R2 WIRING TWINNING CONNECTION DIAGRAM FOR TWINNING S SERIES FURNACES 2 STAGE HEAT 2 STAGE COOLING THERMOSTAT 2 STAGE HEATIN...

Страница 41: ...H TRANSFORMER RC ISOLATION RELAY FIELD SUPPLIED ALTERNATE CONNECTION TWINNING CONNECTION DIAGRAM FOR TWINNING S SERIES FURNACES 2 STAGE HEAT 1 STAGE COOLING THERMOSTAT WITH SINGLE STAGE THERMOSTAT 2 S...

Страница 42: ...e e f fu ur rn na ac ce e To shut 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...

Страница 43: ...a an nt t When looking at the different orientations the direction of the combustion air exhaust in the illustration s description is after the furnace has been rotated if needed Table 7 Venting Optio...

Страница 44: ...Installation Vented out top Vented through left side Table 9 Venting Options for Horizontal Right Applications Refer to the illustrations below to find the approved venting options for horizontal rig...

Страница 45: ...Downflow Orientation or Installation Vented out top Note Requires kit BAYVENT600 Kit used with B C and D cabinets only Note A cabinet furnaces must be vented through the left of right side openings N...

Страница 46: ...in upflow position with the combustion air vented out the left side 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...

Страница 47: ...ented out the left side 1 Remove the four screws holding the inducer in place 2 Rotate the inducer so the inducer outlet is pointing towards the 5 cutout 3 Secure the inducer in place using the screws...

Страница 48: ...recommended for attaching the vent pipe to the inducer outlet Downflow orientation with left side venting Before proceeding lay unit on its back to make the conversion easier The following changes ne...

Страница 49: ...top venting Before proceeding lay unit on its back to make the conversion easier The following changes need to be made to the inducer when installing the furnace in upflow position with the combustio...

Страница 50: ...seen on the display Scroll to the selected Menu item by momentarily depressing the MENU key and then depress the OPTION key to the desired se ng Then momentarily depress the MENU key again to save the...

Страница 51: ...gle Stage Example 2 stage 1 compressor run Run Test Mode C2 5 C2 6 C2 8 C2 9 H1_7 H1 8 H1 4 Default Airflow Taps Gas Heat Tap 5 ODU Menu 2 1 1 st Stage Cooling HP Tap 3 2 nd Stage Cooling HP Tap 7 ORN...

Страница 52: ...H1 1 001 H1 3 H2 6 H1 4 Example Single Stage Example 2 stage 1 compressor run Run Test Mode C1 5 C1 6 C1 8 C1 9 H2_7 H2 8 H2 5 Default Airflow Taps 1 st Stage Gas Heat Tap 2 2 nd Stage Gas Heat Tap 5...

Страница 53: ...ing HP Tap 3 2 nd Stage Cooling HP Tap 7 ORN LED Orienta on UP dn SELECTING COOLING HP FAN SPEEDS for 2 1 ODU Airflow can be adjusted while the unit is running 1st Stage Airflow Scroll to the COP menu...

Страница 54: ...unit on It is designed to allow the technician to observe each mode to ensure the IFC inducer and circula ng blower are performing as intended nd st Ht1 TP2 Ht2 Tp4 CL1 TP3 CL2 TP7 HP1 TP3 HP2 Tp7 CO...

Страница 55: ...633 297 2 957 800 719 428 213 3 1220 1080 940 800 660 4 1403 1298 1192 1087 a 981 5 1524 1428 1336 1248 1164 6 1684 1574 1544 1401 1337 7 1700 1625 1551 1476 b 1401 c 8 1858 1790 1723 1656 1589 9 196...

Страница 56: ...Energized When It Should Be exceeded after 10 times e3 Shorted Pressure Switch 1st Stage e3 2 Open Pressure Switch 1st Stage e3 3 Shorted Pressure Switch 2nd Stage Not Applicable for S8B1 S8X1 e3 4 O...

Страница 57: ...IND N IND H IGN H MV GND TH MVC HLO PS1 TR ILI 6 Pin CTM Motor Connector Tap 1 Low Speed Tap 2 Tap 3 Tap 4 Tap 5 High Speed Common 6 Pin CTM Connector S8B1 IFC Component Layout IFC Low Voltage Termina...

Страница 58: ...and flame will crossover to the remaining burners establishing current to the flame sensor Flame sensing must be established within 4 seconds N No ot te e There are two flame sense pads located on the...

Страница 59: ...IFC Technician should read 24VAC between Y2 and B C 3 24VAC is sent to the OD unit via thermostat wiring 4 The indoor airflow ramps to 2nd stage airflow The seven segment LED for example will read CL...

Страница 60: ...cations 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 speci...

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