ICP N9MP2125J20A1 Installation Instructions Manual
ICP N9MP2125J20A1 Installation Instructions Manual

ICP N9MP2125J20A1 Installation Instructions Manual

N9mp1, n9mp2, *9mpd four position condensing gas furnace
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N9MP2
Four Position Condensing Gas Furnace
SAFETY
REQUIREMENTS
Recognize safety information.
This is the safety-alert
symbol/X
X.
When you see this symbol on the furnace and in instructions
or
manuals be alert to the potential for personal injury.
Understand the signal words DANGER,
WARNING, or CAUTION.
These words are used with the safety-alert
symbol.
DANGER
identifies the most serious hazards, those that will result in severe personal injury or death. WARNING signifies a hazard that could
result in personal injury or death. CAUTION is used to identify unsafe practices that could result in minor personal injury or product and
property damage.
Installing and servicing heating equipment can be hazardous due to gas and electrical components.
Only trained and qualified person-
nel should install, repair, or service heating equipment.
Untrained service personnel can perform basic maintenance
functions such as cleaning and replacing air filters. All other operations
must be performed by trained service personnel. When working on heating equipment, observe precautions in the literature, on tags,
and on labels attached to or shipped with the unit and other safety precautions that may apply.
Follow all safety codes. In the United States, follow all safety codes including the current edition National Fuel Gas Code (N FGC) NFPA
No. 54/ANSIZ223.1.
In Canada, refer to the current edition of the National Standard Canada CAN/CGA-B149.1
- and .2-M91 Natural
Gas and Propane Installation Codes (NSCNGPIC).
Wear safety glasses and work gloves. Have fire extinguisher available during start-
up and adjustment
procedures and service calls.
These instructions
cover minimum requirements
and conform to existing national standards and safety codes.
In some instances,
these instructions
exceed certain local codes and ordinances, especially those that may not have kept up with changing residential
construction
practices.
We requre these instructions
as a minimum for a safe installation.
Manufactured
by:
International
Comfort
Products
Corporation
(USA)
Lewieburg,
TN USA 87091
Table of Contents
1. SafeInstallationRequirements .................
4
2. Installation................................
5
3. Combustion & Ventilation Air ..................
8
4.Vent& Combustion Air Piping ................
10
5. GasSupplyand Piping ......................
24
6. Electrical W iring ...........................
28
7. Ductworkand Filter(Upflow/Horizontal).........
29
8. ChecksandAdjustments ....................
33
9. FurnaceMaintenance .......................
35
10.Sequenceof Operation& Diagnostics..........
35
11.Concentric VentTermination .................
40
Fire or Explosion hazard.
This furnace is not designed for use in mobile
homes, trailers or recreational vehicles.
Such use could result in death, bodily injury
and/or property damage.
Printed in U.S.A.
LP1
9/4/2001
440 01 1010 04

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Summary of Contents for ICP N9MP2125J20A1

  • Page 1 N9MP2 Four Position Condensing Gas Furnace SAFETY REQUIREMENTS Recognize safety information. This is the safety-alert symbol/X When you see this symbol on the furnace and in instructions manuals be alert to the potential for personal injury. Understand the signal words DANGER, WARNING, or CAUTION.
  • Page 2 N9MP1 - Indoor combustion air (1 pipe only) N9MP2 - Direct Vent ONLY (2 pipe only) *9MPD - Dual Certified Venting (1 or 2 pipes) *Denotes Brand 0 75 Brand Engineering Rev. Brand Identifier Denotes minor changes 8 = Non-Condensing, 80+% Gas Furnace Marketing Digit 9 = Condensing,...
  • Page 3: Check Sheet

    START-UP CHECK SHEET For 90+ Furnace (Keep this page for future reference) Dealer Name: Address: Business Card Here City, State(Province), Zip or Postal Code: Phone: Owner Name: Manual Gas Shut-Off Upstream YES _1 NO _1 of Furnace/Drip-Leg? Address: YES _1 NO _1 Condensate Drain Connected? City, State(Province),...
  • Page 4: Safe Installation

    1. Safe Installation Requirements heaters, furnaces, gas-fired fireplaces, wood fireplaces, and several other items. Carbon monoxide can cause seri- bodily injury and/or death. Therefore, to help alert Installation or repairs made unqualified people of potentially dangerous carbon monoxide levels, persons can result in hazards to you and others. you should have carbon monoxide...
  • Page 5: Installation

    trap onthe furnace m ust b eprotected from freeze damage.(See Disconnect the 3/4" OD rubber hose from the condensate Figure 8 trough Figure 15) trap. Insert a funnel into the hose and and pour four(4) ounces of sanitary type (RV) antifreeze into the plastic 1.
  • Page 6 Dimensions and Clearances Cabinet to Combustible Clearances TOP BOT. R. FRONT FL E AIRd'NT)ANE (N9M P2 & _9MPD FRONT LEFT SIDE [_ 5"/_L 11,,4 ELECTRICAL TRAP (DOWNFLOW) 11,,16 VEN GpS 1 11/16 ALL DIMENSIONS IN INCHES 413/16 TRFALPoW/RORIZONTAL_ THERMOSTAT 13£8 2 3/4 281/2 181/2...
  • Page 7: Installation Requirements

    quired for the condensate trap. Downward slope of the conden- InstallationRequirements sate drain line from the condensate trap to the drain location must Install furnace level. be provided. Adequate freeze protection of the drain trap and the drain line must be provided. See "Condensate Drain Trap"section This furnace...
  • Page 8: Ventilation Air

    If the furnace is to be installed in a crawl space, consult local The horizontal furnaces may be installed directly on combustible codes. A suitable concrete pad or blocks are recommended wood flooring or supports as long as all required furnace clear- crawl...
  • Page 9 Figure 6 illustrate how to provide combustion and ventila- Horizontal duct openings require 1" square offree area per tion air. A minimum of two permanent openings, one inlet 2,000 BTUH of combined input for all gas appliances and one outlet, are required. area (see Table Vertical...
  • Page 10: Air Piping

    NOTE: Refer t o definitions in section titled Unusually Tight buildings with unusually tight construction, additional air MUST Construction. If any one of the conditions apply, the space MUST be provided using the methods described in section titled Con- be considered confined space regardless...
  • Page 11 1. Determine thebest r outing a ndtermination forthevent Furnace applications with vertical vents requiring vent di- pipe and airinlet p ipe byreferring toalloftheinstructions ameter increaser fittings must have increaser fittings andguidelines inthisSection. installed in vertical portion of the vent. Condensate will be trapped in the vent if the vent diameter...
  • Page 12: Condensate Drain Trap

    Pipe Diameter Table Vent Termination Clearances Dual Piping ONLY (United States Only) 50,000 & 75,000 Btuh Furnaces 40' & (5) 90 ° elbows with 2" PVC pipe or 70' & (5) 90 ° elbows with 3" PVC pipe OtherThan 100,000 Btuh Furnace OtherThan 70' &...
  • Page 13 2. A plugged c ondensate drain lineora failed condensate area which may drop below freezing. This can cause improper pump will allowcondensate to spill.If thefurnace is eration or damage to the equipment. If the the furnace environ- installed where a condensate spill c ould c ause damage, it ment has the potential...
  • Page 14: Horizontal Left Installations

    For right side mounted condensate trap, the rigid plastic drain NOTE: The support leg on the plastic drain tube MUST be posi- tube MUST be used, Cut two 2" long sections from the 3/4" OD tioned on the blower partition. rubber hose, Connect the plastic drain tube to the drain stub on the bottom of the plastic transition box and to the stub on the con- Connect...
  • Page 15: Horizontalright Installations

    Horizontal Right Installations (Dual Certified *9MPD) Vent Fitting Combustion Air Pipe Rubber Coupling & Clamps 90 ° Elbow _(Optional) Plastic Caps 5/8" Hose & Clamps Combustion Blower Return Supply Combustion Blower Mounting Screws (4) Pressure Switch Air Intake Hose, Transition Coupling Pressure Switch, Transition...
  • Page 16: Downflow Installations

    Downflow Installations (Dual Certified *gMPD Models) LEFT Side Venting_ RIGHT Side Venting "4C> <z> Air Intake Return Air Return Air Coupling Combustion Air Pipe, (Optional) Combustion Blower Pressure Switch, Combustion Blower Transition Mounting Screws (4) Transition Pressure Switch Vent Pipe Hose, Transition _ __e_ltFittin Blower...
  • Page 17 Upflow Installations (Single Pipe & Direct Vent NgMP1 & NgMP2 Models) LEFT Side Venting RIGHT Side Venting ombustion Combustion Air Pipe, / Air Pipe, NgMP2 ONLY Supply Air NgMP2 ONLY Supply Combustion Blower Plastic Mounting Caps Rubbe_ P,ug Combustion Blower 180 °...
  • Page 18 Horizontal Left Installations (Single Pipe & Direct Vent NgMP1 & NgMP2 Models) Pressure Switch, Blower Rubber Plastic Plug Caps Grommet Pressure Switch Transition Transition Pressure Switch, Vent Fitting Supply & Clamps Return Pressure Switch Hose, Blower ?_> Inlet Combustion Blower Combustion Air Pipe, 5/8"...
  • Page 19 Horizontal Right Installations (Single Pipe & Direct Vent N9MP1 & N9MP2 Models) Transition Box Vent Pipe Caps Vent Fitting Combustion Air Pipe, NgMP2 ONLY 5/8" Hose & Return Clamps Mounting Screws Pressure Switch _ Supply Hose, Blower Plastic 3/4" Hose Caps Pressure Hose, Transition...
  • Page 20 Downflow Installations (Single Pipe & Direct Vent NBMP1 & NBMP2 Models) LEFT Side Venting RIGHT Side Venting <z> <Z> Return Air Return Air Vent Fitting Vent Pipe & Clamps Grommet Pressure Switch Combustion Blower Combustion Blower Hose, Transition Mounting Screws (4) (Rotate 180 °...
  • Page 21 ConnectingVentand CombustionAir Piping Proper Sealing Procedure for Combustion Blower Vent Fitting Vent Pipe (Top panel exit) & Clamps Poison carbon monoxide gas hazard. Cement or mechanically seal all joints, fittings, etc. to prevent leakage of flue gases. Rubber Coupling & Clamps Failure to properly seal vent piping can result in Combustion death, personal injury and/or property damage.
  • Page 22 NOTE: Stir t he solvent cement frequently while using. Use anatu- iiiiiiiiiiiiii_i;!i:ii:ii:ii!;i:;!ii!iiiiiililiiiii_!_:i _I! ¸_i_i_i!_!_ii_ii_ii!_!ii_i_ii_ii_ii_ii_iiiiii_iii_ii_ii_ii_iiiiiiiiiiiiii_iiiiiiiii_iiiiiiiiiiiiiii_i Sidewall Termination 12" or More ral b ristle b rush o rthe dauber supplied with thecement. The prop- ................Above Snow Level or Grade Level er brush size is one inch.
  • Page 23: Vertical Termination

    Multi Vent Termination Clearances Sidewall Termination with Exterior Risers to Get Above Snow Level or When two (2) or more furnaces are vented near each other, each Grade Level furnace must be individually vented. "18" Minimumfor cold ciimates Two (2) vent terminations may be installed as shown 8"...
  • Page 24: Gas Supply And Piping

    s,0ewa,, ,o,e, Von, Exhau°,-A,r Recommended Alternate Installation for Sustained Cold Termination with Exterior Risers Weather (-0 ° F & below) 18" Min. for Cold Climates (Sustained Below 0 ° F) 8" Min. 12" Min. Grade or Inlet Snow Level INLET 12"...
  • Page 25: Gas Supply Pressure

    Gas input to burners MUST NOT exceed the rated input Gas Pressures Below 2000' shown on rating plate. Manifold Do NOT allow minimum gas supply pressure to vary down- Supply Pressure Type ward. Doing so will decrease input to furnace. Refer to Min.
  • Page 26 2. For o peration with LP gas ataltitudes above 2 ,000', gas ori- NOTE: Main burner orifices can be changed for high altitudes. rices MUST be changed and manifold pressure MUST be Disconnect gas line from gas valve. maintained as per Table 6.
  • Page 27: Gas Piping Requirements

    Time how many seconds it takes the smallest dial on the Example gas meter to make one complete revolution. Refer to Ex- Natural Gas No. of Seconds TimePer Cubic BTUPer ample. Relight all appliances and ensure all pilots are operating. BTUContent 1,000 Per Hour...
  • Page 28: Electrical Wiring

    6. Iforifices w ere changed, make sure they arechecked for leakage. 6. Electrical Wiring energized during continuous fan operation controlled by the elec- tronic fan control. Electrical shock hazard. Fan Control Turn OFF electric power at fuse box or service The fan control is preset at the factory...
  • Page 29: Ductwork And Filter

    iiiiiiiii!:ii iiiiiii ; i;i;i;i;i;i;i !!! ! !!!!;!;iii !;iiiiii ¸!;!; ;; i i;i;i;i;i;i Fan Timer Connections DIP Switch FUSE 25-23-41 7. Ductwork and Filter If separate evaporator and blower units are used, install good sealing dampers for air flow control. Chilled air going through the furnace...
  • Page 30 For s ide connections using a 16" x 25" filter, cut o ut t heem- Use either filter type: bossed area shown i nFigure 31. This wil! provide a 141/2" • Washable, high velocity filters are based on a maximum x 221/2 "...
  • Page 31 Note: The three(3) screws in the top panel of the furnace next to Standoff Filter Rack the duct flange MUST be removed to provide serviceability of the primary heat exchangers in the downflow installation Position plenum through the floor and set the furnace over the opening in the floor.
  • Page 32 Subbases for Combustible Floors Dimensions Subbase for Combustible Opening In Base Typical Plenum Subbase for Combustible Opening In Floor Floor Dimensions For Plenum Dimensions Floors Part Number Furnace Subbaee NAHH001SB 1511/16 283/4 149/16 161/4 145/8 131/2 131/2 NAHH002SB 195/16 283/4 183/16 181/4 18t/4...
  • Page 33: Checks And Adjustments

    Condensate Line Raised by Base 25-20-52 8. Checks and Adjustments For altitudes up to 2000', set pressure to value shown in Startup Table 6, _+ 0.3" (8mm) water column. For altitudes of 2000' to 8000', see Section 5 for correct pressure setting. NOTE: Refer to the start-up procedures...
  • Page 34: Temperaturerise Check

    Blower Speed Chart Main Burner Wire Color Motor Speed Black High Orange* Med-High Blue Medium * Med-High speed may not be provided on all models, Change the heat or cool blower motor speed by removing 10-10-78 the motor lead from the "Heat" or "Cool"...
  • Page 35: Maintenance

    9. Furnace Maintenance CAUTION See "User's Information Manual" and the "Service Manual". It is recommended that the furnace be inspected and serviced on an annual basis (before the heating season) by a qualified service technician. 10. Sequence of Operation & Diagnostics The following is the normal operating...
  • Page 36 Gas Valve DiagnosticCodes (See Figure 41) = Control not powered Heartbeat = Normal Operation (Standby or call for heat) 1 Flash = Not used 2 Flashes = Pressure switch closed when should be open 3 Flashes = Pressure switch circuit was still sensed as open 30 seconds after the inducer...
  • Page 37: Sequence Of Operation

    HONEYWELL SV9541M "SMART VALVE" Sequence of Operation POWER APPLIED TO APPLIANCE THERMOSTAT CALLS FOR HEAT ¢ WA,T PRESSURE SW,TOHES TO OPEN PRESSURE SWITCHES PROVED OPEN? COMBUSTION BLOWER ENERGIZED FIVEMINUTEWAIT PERIOD PRESSURE SWITCHES CLOSED WITHIN COMBUSTION BLOWER DE-ENERGIZED 30 SECONDS? 3 SECOND PRE-PURGE PILOT VALVE OPENS: THREE SECOND FLAME FAILURE RECYCLE DELAY...
  • Page 38: Troubleshooting

    HONEYWELL SV9541M "SMART VALVE" Trouble shooting The 6 + X designation indicates a combination of flash codes: 6 flashes shows the control is in soft lockout, followed by X flashes indicate the reason the control went into soft lockout. Last status code indicates repair to address first...
  • Page 39 HONEYWELL SV9541M "SMART VALVE" Trouble shooting continued INDICATES CHECK/REPAIR STATUS SoftLockout. Last failure was pressure switch Ignitionsystemcontrolswitchmustbe in the ON position. Maximum recycle count exceeded 6 Flashes + Pressureswitchesoperation, t ubing, andwiring. 3 Flashes Restrictionsinfurnaceair intakeor vent piping. Combustion air blower is de-energized, Circulating blower is de- Highwindsblowingagainstvent.
  • Page 40: Vent Termination Clearances

    11. Concentric Termination Vent Termination Clearances Kit Components Kit Contents: 3" Rain Cap or 2" Rain Cap 3" Diameter SDR-26 Pipe, 191/2" Long or 4" Diameter SDR-26 Pipe, 371/8" Long, 2" Diameter SDR-26 Pipe, 315/8" Long or Poison carbon monoxide gas, fire and explo- 21/2"...
  • Page 41 4. Dimension Dmay belengthened to60" max. orshortened by Partially assemble the concentric vent termination kit. cutting t he pipes t o12" m in. D imension Awill c hange accord- Clean and cement the parts using the procedures for Join- ingtoDdimension. (See Figure 44) ing Pipe and Fittings section of the manual.
  • Page 42: Concentric Vent

    iiiiiiiiiiii_ii_i!i_i_i_;i;!!i!iii_iiiiiiiii_i_iii_;!_il!i_iiiiii_iii_iiilii_ii_i_!_!i!i!i!_i_iiiii!!_!_i!_i_i_i_i_iiiiiiiii_i_i_i_iiii_i_i_i_i_i_i_i_ Install the rain cap and the small diameter pipe assembly Concentric Vent Combustion- the Y concentric fitting and the large pipe assembly. Ensure ................Side Termination that the small diameter pipe is bottomed out and securely cemented in the Y concentric fitting, Roof Overhang Cement...

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