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AGATWNPME01B: Installation Instructions

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

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A200261

Fig. 31 – Single-Stage Furnace with Single-Stage Thermostat (Field Supplied)

Table 5 – Continuous Fan Operation

VENTING

Refer to Installation, Start-Up, and Operating Instructions supplied with

each  furnace  for  venting  information.    Do  not  common-vent  or

breach-vent  condensing  furnaces.  Refer  to  furnace  installation

instructions  for  allowable  configurations  and  proper  termination.  It  is

important that vent terminations be made as shown to avoid recirculation

of flue gases.

GAS SUPPLY PIPING

All gas connections must be made through exposed outer side of each

furnace. Do not common connect any connection other than supply and

return-air ducts. Furnaces are recommended to be provided with a single

shutoff  valve.  However,  individual  shutoff valves may  be required  by

local  codes  or  jurisdictions.  Refer  to  Installation,  Start-Up,  and

Operating  Instructions  provided  with  each  furnace  for  additional  gas

supply information.

CONDENSING FURNACE CONDENSATE

DRAIN CONNECTIONS

The condensate trap for a condensing furnace is factory installed in the

furnace  vestibule  and  factory  connected  for  UPFLOW  applications.

Install condensate trap such that field drain connections are on the left

side for LH (MAIN) furnace and on right side for RH (SECONDARY)

furnace. 
The  condensate  trap  must  be  relocated  for  downflow  and  horizontal

applications.

See furnace Installation, Start-Up, and Operating Instructions for details

on relocating the condensate and attaching field drain connections.
Indoor  coil  condensate  drains  must  not  be  hard  piped  to  condensing

furnace  condensate  drain.    Route  indoor  coil  condensate  drains

separately to a code-approved drain.
Indoor coil condensate drains may be combined with furnace condensate

drains  provided  a  stand-pipe  connection  (air  gap)  is  made  in  the

condensate  drainage  system.    Refer  to  the  furnace  installation

instructions for additional details.
Slope all drain lines at least 1/4 in. per foot.  Support or clamp all drain

lines to prevent damage to the drain line.

START-UP AND ADJUSTMENT

Refer to Installation, Start-Up, and Operating Instructions supplied with

furnace for detailed information.

1. Shut off all power and gas to both furnaces.
2. Position blower off delay switches on controls in BOTH furnaces to

the  SAME  desired  blower  off  delay  in  heating.  See  furnace

Installation, Start-Up, and Operating Instruction for further details.

THERMOSTAT

CONNECTIONS 

CONTROL 

BOARD 

CONNECTION 

ACTION 

Power from control board to 

thermostat 

Operates fan speed at continuous 

fan selection.

WARNING

!

ELECTRICAL SHOCK, FIRE OR EXPLOSION HAZARD

Failure to follow this warning could result in personal injury or death,

or property damage. 

Before  installing,  modifying,  or  servicing  system,  main  electrical

disconnect switch must be in the OFF position and install a lockout tag.

There may be more than one disconnect switch.  Check accessories and

cooling  unit  for  additional  electrical  supplies  that  must  be  shut  off

during  furnace  servicing.    Lock  out  and  tag  switch  with  a  suitable

warning label.  Verify proper operation after servicing. 

Содержание AGATWNPME01B

Страница 1: ...ODELS 3 ELECTROSTATIC DISCHARGE ESD PRECAUTION 5 SECTION 2 5 GENERAL ALL ORIENTATIONS 5 INSTALL FURNACES 5 UPFLOW INSTALLATION 5 DOWNFLOW INSTALLATIONS 6 HORIZONTAL INSTALLATION 6 General 6 Attic Platform Back to Back Installations Non Condensing and Condensing Furnaces 7 Horizontal Suspended Installation Condensing Models 7 Horizontal Suspended Installation Non Condensing Models 7 Horizontal Stac...

Страница 2: ...es to the furnace and install lockout tag before performing any installation or modification Follow the operating instructions on the label attached to the furnace CAUTION CUT HAZARD Failure to follow this caution may result in personal injury Sheet metal parts may have sharp edges or burrs Use care and wear appropriate protective clothing safety glasses and gloves when handling parts and servicin...

Страница 3: ...ces through a common bottom plenum The bottom return air plenum shall be at least as high as the width of the furnace bottom return air opening For example if two 17 1 2 in 445 mm wide furnaces are twinned together the full height common return air plenum must be at least 17 1 2 in 445 mm tall When there are height limitations the bottom return air plenum height can be reduced to 8 in 203 mm minim...

Страница 4: ...TE Downflow Application Do not connect return air to any side of the furnace Connect return air plenum as shown NOTE Horizontal Application Do not connect return air to any side of the furnace Do not stack condensing furnaces on top of each other Horizontal stacking only permitted with mid efficiency furnaces Back to back installations platform or suspended is approved for all models For back to b...

Страница 5: ...bles and service as shown in the individual furnace installation instructions 1 Select two identical heating and airflow furnaces see Table 1 2 Remove bottom closure panels from both furnaces see Fig 6 a Remove main and blower access doors b Remove screws from front filler panel and bottom closure panel when used c Rotate front filler panel downward to remove d Remove bottom closure panel and set ...

Страница 6: ... of indoor coils and or common supply plenum If no approved cased indoor coil is used install the furnaces on accessory combustible floor bases For side by side installations adjust and shim each furnace to align unused 7 8 in 22 mm knockout in blower compartment which will be used for wire routing between furnaces 5 Drill two 1 8 in 3 mm holes approximately 1 in 25 mm below return air flange from...

Страница 7: ...spension rods as shown in Fig 14 5 Lay furnaces back to back on a flat surface with 7 8 in knock outs facing upward 6 Drill two 1 8 in 3 mm holes approximately 1 in 25 mm below return air flange from inside top of return air opening and through both furnaces see Fig 10 7 Drive one factory supplied No 6 x 3 4 in 19 mm LG screw through each hole and tighten until furnaces are secure and foam strips ...

Страница 8: ...l additional building codes 4 Long truss spans may require additional support along the bottom chord of the truss Consult the truss manufacturer s guidelines for engineering assistance 5 Long rafter or attic joist spans may require additional support along the bottom of the rafter or joist Consult local or regional building codes for design and loading requirements For suspended installations see ...

Страница 9: ...NSATE TRAP 2 ACCESS OPENING FOR TRAP 30 762mm MIN WORK AREA COMMON RETURN VENT COMBUSTION AIR INTAKE ROLLOUT PROTECTION REQUIRED INSTALL 12 X 22 305 X 559mm SHEET METAL IN FRONT OF BURNER COMPARTMENT AREA SEDIMENT TRAP SEDIMENT TRAP EXTENSION HARNESS GAS SUPPLY SHUT OFF GAS PIPE UNION GAS PIPE UNION GAS SUPPLY SHUT OFF SHEET METAL 22 556 mm 12 305 mm 4 3 4 121 mm 1 25 mm 17 3 4 451 mm OVER ALL 4 3...

Страница 10: ...Fig 14 Suspended Installation of a Condensing Furnace 1 4 1 4 ROLLOUT PROTECTION REQUIRED Install 12 x 22 204 x 559 mm sheet metal above the burner compartment area Sheet metal MUST extend above the furnace casing by 1 25 mm with door removed A 1 25 mm clearance minimum between top of furnace and combustible material is required Entire length of furnace must be supported with furnace is used in ho...

Страница 11: ...igns without notice and without obligations 11 A10276 Fig 15 Suspended Installation of a Non Condensing Furnace A10278 Fig 16 Suspended Installation of Stacked Non Condensing Furnaces 3 8 Flat Washer 3 8 Hex Nut 3 8 Flat Washer 11 2 x 11 2 x 1 4 Angle Iron 3 8 Lock Washer 3 8 Theaded Rod 3 8 Lock Washer 3 8 Hex Nut ...

Страница 12: ...e voltage potential between both furnaces will be ZERO If a Both LEDs are on continuously System phasing is okay b One or both LEDs are rapidly flashing 1 Line voltage polarity is reversed 2 Furnace s are not grounded 3 Transformer polarity is reversed c One LED is off one LED is on continuously 1 The 24 VAC circuit is inoperative on furnace with LED light off 2 Check transformers auxiliary limits...

Страница 13: ...l Secondary Twinning Harness Install Secondary Twinning Kit Harness The Secondary Twinning Kit harness is identified by a white label marked SECONDARY on the label near the two pin plug of the Auxiliary Limit Switch ALS S leads The Door Interlock Relay ILR and Secondary Auxiliary Limit Switch ALS M mount to the blower housing as shown in Fig 19 The individual leads are labeled on the harness see F...

Страница 14: ...talled Locate the green yellow and white wires from the extension harness and connect the wires to the Communication Connector as shown above L14F006A Fig 18 Twinning Communication Connection L12F009 NOTE a Mount Twinning Kit Relay TKR and Interlock Relay ILR on furnace blower housing as shown b Twining Kit Relay TKR mounts on LH Furnace blower housing c Interlock Relay ILR mounts on RH furnace bl...

Страница 15: ...CONNECTIONS 115 VAC L1 LINE VOLTAGE CONNECTIONS EAC 1 TERMINAL 115 VAC 1 0 AMP MAX PL1 LOW VOLTAGE MAIN HARNESS CONNECTOR TRANSFORMER 24 VAC CONNECTIONS 3 AMP FUSE STATUS AND COMM LED LIGHTS SW1 SETUP SWITCHES AND BLOWER OFF DELAY MODEL PLUG CONNECTOR SW2 AIR CONDITIONING AC AIRFLOW SETUP SWITCHES 6 7 8 COMMUNICATION CONNECTOR WHEN USED SW2 CONTINUOUS FAN CF AIRFLOW SETUP SWITCHES 3 4 5 HUMIDIFIER...

Страница 16: ...AGATWNPME01B Installation Instructions Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations 16 L14F007 Fig 22 Secondary Harness ...

Страница 17: ...terminal to the Y1 terminal on the furnace control board 5 Connect the R terminal of the field supplied transformer to the open contact of each pilot duty relay 6 Connect the other open contact of the first stage cooling relay to the wire for Y terminal of the first stage contactor 7 Connect the other open contact of the first stage cooling relay to the wire for Y terminal of the second stage cont...

Страница 18: ...e control 9 Connect thermostat C or COM lead to the COM 24V terminal on the Main furnace control board L14F010 Fig 26 Furnace Thermostat Switch A07907 Fig 27 Example of Setup Switch in OFF Position Single Stage Furnaces with Single Stage Thermostat Field Supplied See Fig 31 and Table 3 NOTE This application allows both furnaces to operate together as a single unit See furnace Installation Start Up...

Страница 19: ... Y2 None Thermostat Y2 wired directly to RH accessory relay to start RH A C for second stage cooling G G Starts both indoor fans on cooling speed with Y Y2 energized Dehum Dehum Reduces airflow in cooling mode to 90 of high cooling airflow when Dehum input is removed Table 4 Two Stage Furnace Thermostat Connections Two Stage Heating with Single Stage Thermostat Using Two Stage Furnaces C C Transfo...

Страница 20: ... the right to change at any time specifications and designs without notice and without obligations 20 A190208 Fig 29 Two Stage Furnace with Single or Two Stage Thermostat Field Supplied A200260 Fig 30 Single Stage Furnace with Two Stage Thermostat Field Supplied ...

Страница 21: ...ace Installation Start Up and Operating Instructions for details on relocating the condensate and attaching field drain connections Indoor coil condensate drains must not be hard piped to condensing furnace condensate drain Route indoor coil condensate drains separately to a code approved drain Indoor coil condensate drains may be combined with furnace condensate drains provided a stand pipe conne...

Страница 22: ...main limit or twinning kit auxiliary limit switch in which case both furnaces respond Before performing component test disconnect Communication PL7 Connector from LH furnace control After removing component test can be initiated on each furnace individually as stated in Installation Start Up and Operating Instructions SINGLE STAGE HEAT SINGLE STAGE FURNACES WITH SINGLE STAGE THERMOSTAT 1 Operation...

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