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20

Horizontal Installations

Filters must be installed in either the central return register or 

in the return air duct work.

Normal Sequence of Operation 

Power Up

• 

120 VAC power applied to furnace.

• 

Integrated ignition control performs internal checks.

• 

LED light will flash once at power up and then remain 

on. 

• 

Integrated ignition control monitors safety circuits 

continuously.

• 

Furnace awaits call from thermostat.

Consider installing an air cleaner with deep-pleated media filter at the time of furnace installation. A deep-pleated filter with 

a MERV rating of 8 (minimum) will often provide better filtration to protect equipment and the air distribution system than a 

standard 1” filter and often has lower static pressure loss than a 1” filter. Also a deep-pleated filter will typically require less 

frequent replacement intervals. Avoid using highly restrictive 1” filters which produce static pressure loss greater than .25” 

W.C. In some installations the minimum filter size required (consult filter sizing chart) will not lend itself to a filter installation 

on the side of the furnace. The installation of a centrally installed air cleaner cabinet or a return duct filter installation may 

offer more practicality. 
Clean Comfort™ brand MERV 11 air cleaners have 5¼” media filters and are available in the following configurations. Consult 

your distributor for information on our complete line of IAQ Clean Comfort™ products.

Air cleaner installation location Maximum Heating Airflow Filter (Media) Dimensions Part Number

Air 

Cleaner 

Family

Side or bottom return

1200 CFM

16 in X 20 in x 5¼"

AM11-1620-5

Side or bottom return

1600 CFM

16 in X 25 in x 5¼"

AM11-1625-5

Side or bottom return

1600 CFM

20 in X 20 in x 5¼"

AM11-2020-5

Side or bottom return

2000 CFM

20 in X 25 in x 5¼"

AM11-2025-5

Side return

(for 2 separate returns)

Side return (Right angle)

2000 CFM

20 in X 25 in x 5¼"

AM11-2025-5RA AM11-5RA

Bottom return (platform)

2000 CFM

20 in X 25 in x 5¼"

AM11-2832-5PP

Bottom return (platform)

2000 CFM

20 in X 25 in x 5¼"

AM11-2843-5PP

AM11-5

2 X 1600 CFM

2, 16 in X 25 in x 5¼"

AM11-3225-5

AM11-3225

AM11-5PP

AM11-5

AM11-5RA

AM11-5PP

Family

Family

Family

Table 8

Heating Mode

The normal operational sequence in heating mode is as 

follows:

• 

R and W thermostat contacts close, initiating a call for 

heat.

• 

Integrated control module performs safety circuit 

checks.

• 

Induced draft blower is energized for 30 second pre-

purge period causing pressure sensor contacts to close. 

• 

Igniter warm up begins after 30 second prepurge 

expires.

• 

Gas valves open at end of igniter warm up period, 

delivering gas to burners and establishing flame.

• 

Integrated  control  module  monitors  flame  presence. 

Gas valve will remain open only if flame is detected.

Summary of Contents for MES80

Page 1: ...ION 6 LOCATION REQUIREMENTS AND CONSIDERATIONS 7 Clearances and Accessibility 8 Installation Positions 8 Venting For Horizontal Left Or Right Installations 8 Horizontal Installation 8 Furnace Suspensi...

Page 2: ...ustment 23 Gas Input Rate Measurement Natural Gas Only 23 Temperature Rise 24 Circulator Blower Fan Timing Adjustment 24 OPERATIONAL CHECKS 25 Checking Duct Static 25 SAFETY CIRCUIT DESCRIPTION 25 Gen...

Page 3: ...ce qui peut entra ner la mort des blessures ou des dommages mat riels IF THE INFORMATION IN THESE INSTRUCTIONS IS NOT FOLLOWED EXACTLY A FIRE OR EXPLOSION MAY RESULT CAUSING PROPERTY DAMAGE PERSONAL I...

Page 4: ...nt pas suivies pour chacun des appareils raccord s au syst me de ventilation au moment de sa mise en marche cela peut entra ner une intoxication au monoxyde de carbone ou la mort Les tapes suivantes d...

Page 5: ...ing precautions during furnace installation and servicing to protect the integrated control module from damage By putting the furnace the control and the person at the same electrostatic potential the...

Page 6: ...furnace A return air temperature range between 60 F 16 C and 80 F 27 C is maintained Air filters are installed in the system and replaced daily during construction and upon completion of construction...

Page 7: ...icals halogen type refrigerants printing inks cleaning solutions such as perchloroethylene paint removers varnishes hydrochloric acid cements and glues antistatic fabric softeners for clothes dryers m...

Page 8: ...gas electrical and drain line connections NOTE In addition to the required clearances to combustible materials a minimum of 24 service clearance must be available in front of the unit Installation Po...

Page 9: ...ndition c In so far as practical close all building doors and windows and all doors between the space in which the appliance s connected to the venting system are located and other spaces of the build...

Page 10: ...oset or utility room must have two ventilation openings with a total minimum free area of 0 25 square inches per 1 000 BTU hr of furnace input rating Refer to Specification Sheet applicable to your mo...

Page 11: ...PPED APPLIANCE THE POTENTIAL FOR CONDENSATION DAMAGE MAY STILL EXIST WITH EXTREMELY COLD CONDITIONS LONG VENT CONNECTORS EXTERIOR CHIMNEYS OR ANY COMBINATION OF THESE CONDITIONS THE RISK OF CONDENSATI...

Page 12: ...existing metal liners are correctly installed and in good condition Remove the lowest existing vent connector and examine the inside of the elbow or tee at the base of the liner A small amount of soo...

Page 13: ...y recognized building codes or standards One such standard which may be referenced is the Standard for Chimneys Fireplaces Vents and Solid Fuel Burning Appliances ANSI NFPA 211 Remember that all appli...

Page 14: ...or thimbles must be used to prevent the B vent from coming into direct contact with the tile liner or chimney walls Direct contact would result in higher heat loss with an increased possibility of poo...

Page 15: ...s or by the rotation of the fan Also confirm that wiring location will not interfere with fil ter removal or other maintenance After the junction box is in the desired location use washers to connect...

Page 16: ...p in a fossil fuel application A fossil fuel application refers to a combined gas furnace and heat pump installation which uses an outdoor temperature sensor to determine the most cost efficient means...

Page 17: ...f old pipe is used be sure it is clean and free of rust scale burrs chips and old pipe joint compound Use pipe joint compound on male threads ONLY Always use pipe joint compound pipe dope that is APPR...

Page 18: ...size that the heat exchanger can be viewed for visual light inspection or such that a sampling probe can be inserted into the airstream The access panel must be made to prevent air leaks when the furn...

Page 19: ...be installed in the central return register or a side panel external filter rack kit upflows As an alternative a media air filter or electronic air cleaner can be used as the primary filter The follo...

Page 20: ...have 5 media filters and are available in the following configurations Consult your distributor for information on our complete line of IAQ Clean Comfort products Air cleaner installation location Ma...

Page 21: ...call for fan Circulator blower is de energized Electronic air cleaner terminals are de energized Furnace awaits the next call from thermostat Start up Procedure And Adjustment Furnace must have a 120...

Page 22: ...stem 3 Inlet pressure tap connections a White Rodgers valve Back inlet pressure test screw inlet pressure tap out one turn counterclockwise not more than one turn 4 Connect calibrated U tube manometer...

Page 23: ...regulator cover screw 10 Turn OFF all electrical power and gas supply to the system 11 Remove the manometer hose from the hose barb fitting or outlet pressure Tap 12 Replace outlet pressure tap a Whit...

Page 24: ...onvert capacity to tons Example Cooling Capacity of 30 000 BTU hr 30 000 12 000 2 5 Tons 2 Determine the proper air flow for the cooling system Most cooling systems are designed to work with air volum...

Page 25: ...Operational Checks TO AVOID PERSONAL INJURY OR DEATH DO NOT REMOVE ANY INTERNAL COMPARTMENT COVERS OR ATTEMPT ANY ADJUSTMENT ELECTRICAL COMPONENTS ARE CONTAINED IN BOTH COMPARTMENTS CONTACT A QUALIFIE...

Page 26: ...ure activated sensor It guards against overheating resulting from insufficient air passing over the heat exchanger The auxiliary limit control is suitable for both horizontal right and horizontal left...

Page 27: ...Y OR DEATH DISCONNECT ELECTRICAL POWER BEFORE REMOVING FILTERS NEVER OPERATE FURNACE WITHOUT A FILTER INSTALLED BECAUSE DUST AND LINT WILL BUILD UP ON INTERNAL PARTS RESULTING IN LOSS OF EFFICIENCY EQ...

Page 28: ...lthough only functional parts are shown in the parts list all sheet metal parts doors etc may be ordered by description Parts are available from your distributor Functional Parts List Gas Valve Natura...

Page 29: ...10 Integrated Control Module 11 Transformer 12 Blower Door Interlock Switch 13 Circulator Blower Component ID Tubular Heat Exchanger Pressure Sensor Assembly Flue Pipe Connection Gas Line Entrance Ga...

Page 30: ...in Electrostatic Discharge section of manual Furnace Fails to operate Control LED is flashing TWO 2 RED flashes 2 Flashes RED Pressure sensor indicates pressure reading when it should be zero Faulty...

Page 31: ...ockage or excessive wear and replace as needed Check and correct pressure sensor wiring Turn power OFF prior to repair Replace induced draft blower with proper replacement part LED is steady on Steady...

Page 32: ...combustion noise during heating Insufficient combustion air or high input Blocked flue and or air inlet pipe or faulty induced draft blower or pressure sensor Check and correct gas supply and manifol...

Page 33: ...7 26 1663 27 1620 1588 1546 Orange 898 49 794 NA 723 NA 656 NA 588 NA 522 449 384 Black 1443 31 1388 32 1339 33 1292 34 1242 36 1202 1155 1107 Brown 1601 28 1559 29 1513 29 1473 30 1413 31 1405 1365 1...

Page 34: ...D JUNCTION INTEGRATED CONTROL INTERNAL TO 0140F02416 A 2 MANUFACTUR S SPECIFIED REPLACEMENT PARTS MUST BE USED WHEN SERVICING 1 SET HEAT ANTICIPATOR ON ROOM THERMOSTAT AT 0 7 AMPS NOTES HI VOLTAGE FIE...

Page 35: ...35 THIS PAGE INTENTIONALLY LEFT BLANK...

Page 36: ...ering your product is a relatively short process and entitles you to additional warranty protection except that failure by California and Quebec residents to register their product does not diminish t...

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