Lennox SLP98DF090XV60C Handbook
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Lennox SLP98DF090XV60C Handbook

Lennox SLP98DF090XV60C Handbook

Slp98dfv series units
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Table of Contents

Service Literature
SLP98DFV series units are high-efficiency downflow gas
furnaces equipped with variable capacity gas valve, vari­
able speed combustion air inducer and variable speed in­
door blower motor. All models are designed for direct vent
(dual pipe) venting system only. SLP98DFV units are avail­
able in heating capacities from 66,000 to 132,000 Btuh
(19.3 to 38.6 kW) and cooling applications from 2 to 5 tons
(7.0 kW to 17.5 kW). Refer to Engineering Handbook for
proper sizing.
Units are factory-equipped for use with natural gas. Kits are
available for conversion to LPG operation. SLP98DFV mod­
®
els include a SureLight
variable capacity integrated control
that can be used with Lennox icomfort Wi-Fi
part of a communicating comfort system. All SLP98DFV
units meet the California Nitrogen Oxides (NO
and California Seasonal Efficiency requirements.
All specifications in this manual are subject to change. Pro­
cedures outlined in this manual are presented as recom­
mendations only and do not supersede or replace local or
state codes. In the absence of local or state codes, the
guidelines and procedures outlined in this manual (except
where noted) are recommendations only and do not consti­
tute code.

TABLE OF CONTENTS

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®
III Placement and Installation
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VIII Wiring and Sequence of Operation
IX Field Wiring
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Corp. 1030-L7
Revised 05-2016
SLP98DFV SERIES UNITS
®
thermostat as
) Standards
x
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Page 1
SLP98DFV
WARNING
Improper installation, adjustment, alteration, service
or maintenance can cause property damage, person­
al injury or loss of life. Installation and service must
be performed by a licensed professional HVAC in­
staller (or equivalent), service agency or the gas sup­
plier.
WARNING
Electric shock hazard. Can cause injury
or death. Before attempting to perform
any service or maintenance, turn the
electrical power to unit OFF at discon­
nect switch(es). Unit may have multiple
power supplies.
CAUTION
As with any mechanical equipment, contact with
sharp sheet metal edges can result in personal injury.
Take care while handling this equipment and wear
gloves and protective clothing.
© 2016 Lennox Industries Inc.

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  • Page 1: Table Of Contents

    LPG operation. SLP98DFV mod­ ® els include a SureLight variable capacity integrated control ® that can be used with Lennox icomfort Wi-Fi thermostat as part of a communicating comfort system. All SLP98DFV units meet the California Nitrogen Oxides (NO ) Standards and California Seasonal Efficiency requirements.

  • Page 2: Specifications

    NOTE - Filters and provisions for mounting are not furnished and must be field provided. Annual Fuel Utilization Efficiency based on DOE test procedures and according to FTC labeling regulations. Isolated combustion system rating for non-weatherized furnaces. SPECIFICATIONS Model No. SLP98DF090XV60C SLP98DF110XV60C Heating AFUE 97.5% 97.5%...

  • Page 3: Optional Accessories

    OPTIONAL ACCESSORIES - ORDER SEPARATELY NOTE - FURNACES CANNOT BE TWINNED! “B” Width Models “C” Width Models CABINET ACCESSORIES Downflow Combustible Flooring Base 11M60 11M61 CONDENSATE DRAIN KITS Condensate Drain Heat Cable 6 ft. 26K68 26K68 24 ft. 26K69 26K69 50 ft.

  • Page 4: Blower Data

    First stage COOL (two-stage air conditioning units only) is approximately 70% of the same second stage COOL speed position. Continuous Fan speeds are approximately 28%, 38%, 70% and 100% (DIP switch selectable) of the same second-stage COOL speed position minimum 250 cfm. Lennox Harmony III™ Zoning System Applications - Minimum blower speed is 250 cfm. Page 4...
  • Page 5 Continuous Fan speeds are approximately 28%, 38%, 70% and 100% (DIP switch selectable) of the same second-stage COOL speed position minimum 450 cfm. Lennox Harmony III™ Zoning System Applications - Minimum blower speed is 380 cfm (SLP98DF090V48C) and 450 cfm (SLP98DF090V60C). Page 5...
  • Page 6 First stage COOL (two-stage air conditioning units only) is approximately 70% of the same second stage COOL speed position. Continuous Fan speeds are approximately 28%, 38%, 70% and 100% (DIP switch selectable) of the same second-stage COOL speed position minimum 450 cfm. Lennox Harmony III™ Zoning System Applications - Minimum blower speed is 450 cfm. Page 6...
  • Page 7 SLP98DFV PARTS ARRANGEMENT CONTROL BOX (includes variable capacity integrated control, transformer, circuit breaker and door switch) BLOWER ASSEMBLY (Variable Speed Blower Motor Is Hidden) BAG ASSEMBLY BLOWER ACCESS PANEL ACCESS PANEL COMBUSTION AIR INDUCER PRIMARY LIMIT GAS VALVE BURNER BOX ASSEMBLY FIGURE 1 Page 7...

  • Page 8: I Unit Components

    When the inner blower access panel is re­ moved the unit will shut down. 4. Integrated Control (A92) ® SLP98DFV units are equipped with the Lennox SureLight CONTROL BOX SLP98DFV variable-capacity integrated control. This control can be ®...
  • Page 9 Electronic Ignition Three- Stage Timed Operation ® At the beginning of the heat cycle the SureLight integrated Using a single-stage thermostat the system will operate in a control monitors the low fire combustion air inducer pres­ three stage timed mode. Upon a call for heat and a success­ sure switch.
  • Page 10 NEUTRAL TERMINALS COMBUSTION AIR INDUCER CONNECTOR IGNITOR CONNECTOR FLAME SENSE DIAGNOSTIC LINE VOLTAGE PUSH BUTTON TERMINALS DIP SWITCHES ON-BOARD LINKS OUTDOOR AIR INDOOR SENSOR BLOWER TERMINALS 7-SEGMENT CONNECTOR DIAGNOSTIC LED W915 Y1 TO Y2 DISCHARGE AIR SENSOR W951 R TO O TERMINALS W914 R TO DS FACTORY TEST...
  • Page 11 SLP98DFV INTEGRATED CONTROL CONFIGURATION GUIDE FIGURE 5 Page 11...
  • Page 12 TABLE 3 Thermostat Selection Switch Settings Operation Thermostat Switch 1 Switch 2 Switch 3 Variable Capacity Heat Two-Stage (35% to 100%) Three-Stage Heat Single-Stage 2nd stage delay (35%, 70%, 100%) OFF = 7 minutes ON = 12 minutes 3rd stage delay 10 minutes fixed Two-Stage Heat (W1 70%, W2 100%) Two-Stage...
  • Page 13 Switches 10 and 11 -- Cooling Mode Blower Speed Ad­ Ramping Option A (Factory Selection) D Motor runs at 50% for 30 seconds. justment -- Switches 10 and 11 are used to select blower D Motor then runs at 82% for approximately 7-1/2 min­ speed adjustment settings.
  • Page 14 TABLE 9 TABLE 10 Low Heat Blower Speeds High Heat Blower Speeds Blower Blower DIP SWITCH SETTINGS DIP SWITCH SETTINGS Thermostat Speed Thermostat Speed Demand Adjust­ Demand Adjust­ ments ments +15% +15% +7.5% +7.5% High Heat Low Heat (R to Normal Normal (R to W1)
  • Page 15 On-Board Link W914 DS to R (Figure 4) Field Test Mode On-board link W914, is a clippable connection between ter­ Use the diagnostic push button to scroll through the menu as described above. Release the button when the LED minals DS and R on the integrated control. W914 must be flashes “-”...
  • Page 16 TABLE 11 Idle Menu Options These options are displayed on the menu when the button is pressed during normal operation DISPLAY ACTION (when button released) No change (idle) remain in idle mode Solid “E” enter diagnostic mode Solid “-” enter field test mode NOTE - No change implies the display will continue to show whatever is currently being displayed for normal operation TABLE 12 Field Test Menu Options...
  • Page 17 Configuring Unit Size Codes − − Power-Up - Number displayed represents by integrated control unit size code (furnace model − and capacity). If three horizontal bars are displayed followed by continuous E203, furnace control does not recognize unit size code. Configure per the following: Furnace control in IDLE mode No heating, cooling or indoor fan operation)
  • Page 18 TABLE 14 LED 7 Segment Status / Error Code Press the diagnostic push button and hold it to cycle through a menu of options. Every five seconds a new menu item will be displayed. Release the button when the desired mode is displayed. When a solid ”P”...
  • Page 19 Integrated Control Diagnostic Codes (continued) Code Diagnostic Codes/Status of Equipment Action Required to Clear and Recover E 202 Indoor blower motor mis-match - Indoor motor horsepower does not match unit Incorrect furnace size code selected. Check unit size capacity. codes on configuration guide or in installation instructions. E 203 Appliance capacity / size is NOT programmed.
  • Page 20 Integrated Control Diagnostic Codes (continued) Code Diagnostic Codes/Status of Equipment Action Required to Clear and Recover E 292 Indoor blower motor unable to start - Seized bearings, stuck wheel, etc. Indoor blower motor unable to start (seized bearing, stuck wheel, etc), replace motor or wheel if assembly does not operate or meet performance.
  • Page 21 TABLE 15 OPERATING SEQUENCE SLP98DFV and Single-Stage Outdoor Unit OPERATING SYSTEM DEMAND SYSTEM RESPONSE SEQUENCE Demand Relative Humidity Blower System Step Compressor Comments Condition Status (COOL) stage NO CALL FOR DEHUMIDIFICATION Compressor and indoor Normal Operation Acceptable High 100% blower follow thermostat demand BASIC MODE (only active on a Y1 thermostat demand) Normal Operation...
  • Page 22 TABLE 16 OPERATING SEQUENCE SLP98DFV and Two-Stage Outdoor Unit OPERATING SYSTEM DEMAND SYSTEM RESPONSE SEQUENCE Demand Relative Humidity Blower System Comments Step Compressor Condition Status (COOL) stage stage NO CALL FOR DEHUMIDIFICATION Normal Operation - Acceptable Compressor and indoor blower follow thermostat Normal Operation - demand Acceptable...
  • Page 23 DC filter capacitors inside the controller. If the discon­ nect switch is bounced when the disconnect is closed, the dis­ Earlier ECM motors used on other Lennox furnace models are not interchangeable with motors used on connect contacts may become welded. Try not to bounce the the SLP98DFV furnace line.
  • Page 24 Motor Start‐Up BLOWER B3 HARNESS CONNECTORS When B3 begins start‐up, the motor gently vibrates back and forth for a moment. This is normal. During this time the elec­ P48 5 Pin tronic controller is determining the exact position of the rotor. Once the motor begins turning, the controller slowly eases the SHAFT motor up to speed (this is called “soft‐start”).
  • Page 25 Troubleshooting Motor Operation (figure 10) To verify motor operation see steps below: 1- Remove J48 (5 pin power plug) from P48 on the mo­ BLOWER B3 HARNESS CONNECTORS tor. P48 5 Pin 2- With the power on at the furnace and door switch de­ P49 4 Pin pressed, use a test meter to verify 120V between pins 4 SHAFT...
  • Page 26 Troubleshooting Motor Windings TEST A Measure the resistance between each of the three motor Ensure that motor windings are not damaged by performing leads (3-pin plug) and the unpainted part of the end shield. the following tests: NOTE - If your ohm meter is not an auto-ranging type, set it If the winding resistance to ground is <100k to the highest ohm scale (100k ohms or greater) before per­...
  • Page 27 C-Heating Components S47 senses rollout, the circuit breaks and the integrated control immediately stops ignition and closes the gas valve. 1. Ignitor (Figure 14) ® If unit is running and flame rollout is detected, the gas valve The SureLight ignitor is made of durable silicon nitride. Ig­ nitor longevity is enhanced by controlling voltage to the igni­...
  • Page 28 Burner Box Assembly Burner Assembly Ignitor Intake Air Collar Rollout Switch Flame Sensor Gas Valve Burner Box Front Cover Sight Glass (remove screw to open cover) FIGURE 14 Page 28...
  • Page 29 Inlet and outlet pressure taps are located on the valve. is sensed in the heat exchanger, the limit will open. Once the LPG change over kits are available from Lennox. Kits include limit opens, the furnace control energizes the supply air burner orifices and an LP gas valve.
  • Page 30 8. Combustion Air Inducer (B6) & Pressure Switch Vent Calibration (S18) The vent calibration sequence establishes furnace operat­ All SLP98DFV units are equipped with a combustion air in­ ing parameters in a specific installation. The integrated con­ ducer (B6) and dual pressure switch assembly (high fire and trol runs the calibration and may be repeated as necessary low fire).
  • Page 31 After calibration, the integrated control stores the RPM1 6- If low pressure switch is still closed, decrease induc­ and RPM2 values. The low fire (35%) and high fire (100%) er speed 1/2 of the low pressure switch open RPM mar­ RPM points are calculated by adding margin values to the gin.
  • Page 32 The CAI is installed on the cold end header box (see figure TABLE 19 16). The cold end header box is a single piece made of SLP98DFV Unit C.A.I. Orifice Size hard plastic. The box has an internal channel where the -070-1 / -5 0.780 combustion air inducer creates negative pressure at unit...
  • Page 33 Combustion Air Inducer / Cold End Header Box / Vent Pipe Assembly Intake Air Pipe Exhaust Pipe Cold End Header Box Pipe Clamp Exhaust Connector Blower Deck Seal with Alignment Tabs Exhaust Coupling Drain Cap Exhaust Elbow Tubing Combustion Air Inducer (CAI) Clamp Intake Air Coupling CAI Embossment...

  • Page 34: Icomfort Wi-Fi ® Thermostat

    Refer to the illustrations provided with the thermostat for installation, set-up and operation. ® In communicating applications the Lennox icomfort Wi-Fi ® thermostat must be used. In these applications the icomfort See figures 20 and 21 for icomfort Wi-Fi...
  • Page 35 Optional Accessories for use with any icomfort Toucht System icomfortt- NOTE: icomfortt THERMOSTAT SENSES HUMIDITY & CONTROLS ENABLED 24V “H” OUTPUT (& 120V “H” OUTPUT) TO CYCLE HUMIDIFIER SLP98DFV BASED ON DEMAND. NO OTHER CONTROL OR HUMIDISTAT FURNACE REQUIRED. OPTIONAL OUTDOOR AIR SENSOR FOR USE WITH HU­ MIDIFIER (IF NOT ALREADY IN THE SYSTEM FOR OTHER FUNCTIONS.
  • Page 36 III-PLACEMENT AND INSTALLATION CAUTION Pipe & Fittings Specifications Solvent cements for plastic pipe are flammable liq­ All pipe, fittings, primer and solvent cement must conform uids and should be kept away from all sources of igni­ with American National Standard Institute and the Ameri­ tion.
  • Page 37 TABLE 22 OUTDOOR TERMINATION KITS USAGE* STANDARD KITS CONCENTRIC KITS Flush­ Wall Kit Wall Ring Kit Mount 1-1/2 inch 2 inch 3 inch Vent 2 inch 3 inch 2 inch Pipe Input Size Field Dia. in. 51W11 71M80 69M29 Fabricated 44J40 (US) 22G44 (US)
  • Page 38 Vent Piping Guidelines FIGURE 22 ® NOTE - Lennox has approved the use of DuraVent Centrotherm manufactured vent pipe and terminations as ® an option to PVC. When using the PolyPro by DuraVent or ®...
  • Page 39 TABLE 23 Piping Size Process MINIMUM VENT PIPE LENGTHS SLP98DF MIN. EQUIV. EXAMPLE VENT LENGTH MODEL 5 ft. plus 2 elbows of 2”, 2-1/2” or What is the 070, 090, 110 15 ft.* 3” diameter pipe furnace capacity? *Any approved termination may be added to the minimum equivalent length 070, 090, 110? listed.
  • Page 40 TABLE 24 Maximum Allowable Intake or Exhaust Vent Length in Feet NOTE - Size intake and exhaust pipe length separately. Values in table are for Intake OR Exhaust, not combined total. Both Intake and Exhaust must be same pipe size. NOTE - Additional vent pipe and elbows used to terminate the vent pipe outside the structure must be included in the total vent length calculation.
  • Page 41 TABLE 25 Maximum Allowable Intake or Exhaust Vent Length in Feet *Size intake and exhaust pipe length separately. Values in table are for Intake OR Exhaust, not combined total. Both Intake and Exhaust must be same pipe size. Concentric Termination at Elevation 0 - 4500' 2”...
  • Page 42 TYPICAL EXHAUST PIPE CONNECTIONS AND CONDENSATE TRAP INSTALLATION 2” 2” 2” DO NOT transition from smaller to larger pipe size in horizontal runs of exhaust pipe. 3” TRANSITION TRAP *2“ Use only the factory−supplied trap. Trap can be installed on either side of cabinet within 5 ft.
  • Page 43 ‡ Permitted only if veranda, porch, deck or balcony is fully open on a minimum of two sides beneath the floor. Lennox recommends avoiding this location if possible. FIGURE 27 Page 43...
  • Page 44 General Guidelines for Vent Terminations exhaust pipe should be insulated with 1/2” (13mm) Arma­ flex or equivalent. In extreme cold climate areas, 3/4” In Direct Vent applications, combustion air is taken from (19mm) Armaflex or equivalent may be necessary. Insula­ outdoors and the flue gases are discharged to the out­...
  • Page 45 Conditioned Space Exhaust Pipe Pipe Insulation Intake Conditioned Pipe Unconditioned Space Space FIGURE 28 Details of Intake and Exhaust Piping Terminations for NOTE - When venting in different pressure zones, the maximum separation requirement of intake and ex­ Direct Vent Installations haust pipe DOES NOT apply.
  • Page 46 6. On field-supplied terminations, a minimum distance Exiting Exhaust and Intake Vent between the end of the exhaust pipe and the end of the (different pressure zones) intake pipe without a termination elbow is 8” and a minimum distance of 6” with a termination elbow. See Roof T erminated figure 32.
  • Page 47 FIELD FABRICATED WALL TERMINATION NOTE − FIELD−PROVIDED REDUCER MAY BE 2” (51mm) 3” (76mm) REQUIRED TO ADAPT LARGER VENT PIPE SIZE Vent Pipe Vent Pipe TO TERMINATION A− Minimum clearance above grade or average 12” (305 mm) 12” (305 mm) snow accumulation B−...
  • Page 48 FIELD-PROVIDED 1-1/2” (38mm) accelerator 1-1/2” (38mm) accelerator REDUCER MAY BE RE­ provided on 71M80 & provided on 71M80 & QUIRED TO ADAPT 44W92 kits for 44W92 kits for LARGER VENT PIPE SL98DF070V36B SLP98DFV-36B-070 SIZE TO TERMINATION. INTAKE OUTSIDE FLASHING 12” (305mm) INTAKE WALL (Not Furnished)

  • Page 49: Start Up

    Heat cable kit is avail­ unit, location of trap, field-provided fittings and length of able from Lennox in various lengths; 6 ft. (1.8m) - kit no. PVC pipe required to reach available drain. 26K68 and 24 ft. (7.3m) - kit no. 26K69.
  • Page 50 CONDENSATE TRAP LOCATION SLP98DFV with Evaporator (shown with right side exit of condensation) Coil Using a Common Drain Field Provided Vent 1” min. 2” max. above Trap can be installed a maximum condensate drain. of 5ft. from furnace (*PVC only) Field Provided Vent Condensate Drain 1”...
  • Page 51 TRAP / DRAIN ASSEMBLY USING 1/2” PVC OR 3/4” PVC COLD END HEADER BOX WITH 3/4” DRAIN CONNECTION Optional Condensate Drain Connection Adapter 3/4 inch slip X 3/4 inch mpt (not furnished) 90° Street Elbow 3/4 inch PVC (not furnished) Adapter 3/4 inch slip X 3/4 inch mpt (not furnished) Condensate Drain...
  • Page 52 TRAP / DRAIN ASSEMBLY USING 1/2” PVC OR 3/4” PVC COLD END HEADER BOX WITH 1/2” DRAIN CONNECTION Optional Condensate Drain Connection Adapter 1/2 inch slip X 1/2 inch mpt (Not Furnished) 90° Street Elbow 1/2 inch PVC (Not Furnished) Adapter 1/2 inch slip X 1/2 inch mpt (Not Furnished) Condensate Drain...
  • Page 53 IV-START‐UP BEFORE PLACING THE UNIT INTO OPERATION, the unit, smell all around the furnace area for gas. Be sure to A-Preliminary and Seasonal Checks smell next to the floor because some gas is heavier than 1 - Inspect electrical wiring, both field and factory installed for air and will settle on the floor.

  • Page 54: Heating System Service Checks

    Gas Leak Detector is strongly recommended. It is available tee no gas leak into combustion chamber. Turn off power to through Lennox under part number 31B2001. See Corp. unit. All access panels and covers must be in place and se­...
  • Page 55 “+”. tive burner box must be considered. Use pressure test 3 - Start unit on low heat (35% rate) and allow 5 minutes adapter kit (available as Lennox part 10L34) to assist in for unit to reach steady state. measurement.
  • Page 56 Manifold Pressure Measurement Gas Valve Field Installed FIGURE 48 Operating Signal (Delta P) Measurement Negative Port Positive Port Red and Black Tubing or Red Tubing - Black Tubing + Gas Valve Field Installed Measuring Device FIGURE 49 F- Proper Combustion TABLE 30 High Fire Furnace should operate minimum 15 minutes with correct...
  • Page 57 TABLE 31 G- High Altitude Low Fire NOTE - In Canada, certification for installations at eleva­ SLP98DFV Unit tions over 4500 feet (1372 m) is the jurisdiction of local au­ For Nat For L.P. thorities. SLP98DFV units require no manifold pressure adjustments 4.7 - 7.2 5.7 - 8.2 for operation at altitudes up to 10,000 feet (3048m) above...

  • Page 58: Typical Operating Characteristics

    3 - With only the blower motor running and the evaporator specifications provided by the filter manufacturer coil dry, observe the manometer reading. Adjust blower against the data given in the appropriate Lennox motor speed to deliver the air desired according to the Product Specifications bulletin. Additional informa­...
  • Page 59 NOTE - After any heavy snow, ice or frozen fog event the Cleaning Heat Exchanger furnace vent pipes may become restricted. Always check If cleaning the heat exchanger becomes necessary, follow the vent system and remove any snow or ice that may be the below procedures and refer to figure 1 when disassem­...
  • Page 60 22 - Reinstall heat exchanger into cabinet making sure that 42 - Replace the blower compartment access panel. the clamshells of the heat exchanger assembly are 43 - Refer to instruction on verifying gas and electrical con­ resting on the support located at the rear of the cabinet. nections when re-establishing supplies.
  • Page 61 VIII- Wiring and Sequence of Operation NOTE - The thermostat selection DIP switch on the control is 2. Once the control receives a signal that the low-fire factory-set in the “TWO-STAGE” position. pressure switch has closed, the combustion air inducer begins a 15-second pre-purge in ignition speed.
  • Page 62 appropriate target rate. If the furnace is operating in the 5 - If the heating demand continues beyond the second- stage on delay, the integrated control energizes the initial heating cycle after power-up, the initial firing rate combustion air inducer at 70 percent speed. The in­ will be approximately 35 percent.
  • Page 63 A - Sequence of Operation and Troubleshooting Flow Chart IGNITION AND CALL FOR LOW FIRE WITH TWO-STAGE THERMOSTAT Safety Check Verify There Is No Main Burner Flame After Indoor blower OFF Heat OFF Delay (Low Heat Speed) Limit Combustion Air Limit De−Energize Error Code...
  • Page 64 CALL FOR HIGH FIRE WITH TWO-STAGE THERMOSTAT 2 Stage Thermostat 1st Call for High Fire? 2nd Stage Recognition Delay (30 Seconds) Combustion Air Inducer ON (100% Rate Speed) High Pressure Switch Increase Combustion Error Code Wait 5 Closes Within Air Inducer Speed Flashes Minutes 10 Seconds?
  • Page 65 CALL FOR HEAT SATISFIED RUN MODE (2 STAGE THEREMOSTAT) RUN MODE (SINGLE STAGE THERMOSTAT) 1ST OR 2ND STAGE CALL FOR HEAT ALL ALL INPUTS MONITORED (LIMIT, PRESSURE, INPUTS MONITORED (LIMIT, PRESSURE, CALL FOR HEAT / COOL, FLAME LEVEL) CALL FOR HEAT / COOL, FLAME LEVEL) 2nd Stage Heat 2nd Stage Call for Heat...
  • Page 66 IGNITION AND CALL FOR LOW FIRE WITH SINGLE-STAGE THERMOSTAT Safety Check Verify There Is No Main Burner Flame Indoor Blower OFF After Heat OFF Delay (Low Heat Speed) Indoor Blower Limit Limit De−Energize Error Code Combustion Air Switch Closes Within 3 Gas Valve Flashes Inducer ON...
  • Page 67 CALL FOR COOLING 1st Stage Cooling Request Received Energize 1st Stage Cooling Contactor (Compressor & Fan) Indoor Blower On After 2−second delay Energize Indoor Blower (Per Ramping Profile) 1st Stage 2nd Stage Cooling Request Cooling Still Active? Request? Energize 2nd Stage Energize Indoor Blower Cooling Contactor (High Cooling mode)
  • Page 68 CONTINUOUS LOW SPEED INDOOR BLOWER SEQUENCE OF OPERATION Call for Continuous Blower Indoor Blower On (Speed Determined by Dip Switch settings) Request Maintain Indoor for Cooling Go to Call for Cooling Blower at set speed Received? Go to Call for Heat − 2 Stage Thermostat Request Maintain Indoor for Heat...
  • Page 69 IX- Field Wiring TABLE 34 Field Wiring for Non-Communicating Thermostat Applications DIP Switch Settings and On-Board Links (figure 4) W915 W914 (Y1 to Y2) (DS to R) W951 Thermostat Wiring Connections DIP Switch 1 Two-Stage Dehumidifi­ (O to R) Cooling cation or Heat Pumps Harmony IIIt...
  • Page 70 TABLE 44 Field Wiring for Non-Communicating Thermostat Applications DIP Switch Settings and On-Board Links (figure 4) W914 W915 (DS to R) (Y1 to Y2) W951 Dehumidifi­ Thermostat Wiring Connections Two-Stage DIP Switch 1 (O to R) cation or Cooling Heat Pumps Harmony IIIt 2 Heat / 2 Cool...
  • Page 71 TABLE 34 Field Wiring for Non-Communicating Thermostat Applications (Continued) DIP Switch Settings and On-Board Link (figure 4) W914 W915 (DS to R) W951 (Y1 to Y2) Dehumidifi­ Wiring Connections Thermostat DIP Switch (O to R) Two-Stage cation or Heat Pumps Cooling Harmony IIIt...

This manual is also suitable for:

Slp98df110xv60cSlp98df090xv36cSlp98df090xv48cSlp98df070xv36bSlp98dfv series

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