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Lennox SLP98DF070XV36B User Manual

Lennox SLP98DF070XV36B
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Page 1
© 2016 Lennox Industries Inc.
Corp. 1030-L7
SLP98DFV
Service Literature
Revised 05-2016
SLP98DFV SERIES UNITS
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
®
thermostat as
part of a communicating comfort system. All SLP98DFV
units meet the California Nitrogen Oxides (NO
x
) Standards
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
Specifications Page 2.............................
Optional Accessories Page 3......................
Blower Data Page 4..............................
I Unit Components Page 8........................
II icomfort Wi-Fi
®
Thermostat Page 33..............
III Placement and Installation Page 35..............
IV Start Up Page 53..............................
V Heating System Service Checks Page 54..........
VI Typical Operating Characteristics Page 57........
VII Maintenance Page 57..........................
VIII Wiring and Sequence of Operation Page 60.....
IX Field Wiring Page 68...........................
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.
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Lennox SLP98DF070XV36B Specifications

General IconGeneral
ModelSLP98DF070XV36B
TypeGas Furnace
Efficiency RatingUp to 98.7% AFUE
Heating Capacity66, 000 BTU/h
Blower TypeVariable Speed
Venting TypeDirect Vent
StagesModulating
Fuel TypeNatural Gas
CFM @ 0.5 in. WC External Static Pressure1200 CFM
Blower MotorECM
WarrantyLimited Lifetime Heat Exchanger, 10-year Parts

Summary

SPECIFICATIONS

Indoor Blower

Provides data on motor output, cooling capacity, and air volume.

BLOWER DATA

HEATING BLOWER PERFORMANCE

Heating blower performance data in CFM for SLP98DF110V60C.

COOLING BLOWER PERFORMANCE

Cooling blower performance data in CFM for SLP98DF110V60C.

I-UNIT COMPONENTS

A-Control Box

Details components including transformer (T1), interlock switch (S51), circuit breaker (CB8), and integrated control (A92).

Electronic Ignition

Electronic Ignition Sequence

Describes the step-by-step process of the electronic ignition system.

THERMOSTAT CONNECTIONS (TB1)

THERMOSTAT CONNECTIONS (TB1)

Details thermostat wiring connections to the control board.

SLP98DFV INTEGRATED CONTROL CONFIGURATION GUIDE

THERMOSTAT SELECTION

Guide for selecting thermostat types and their settings.

DIP Switch Settings and On-Board Links (Figure 4)

DIP Switch Settings and On-Board Links

Heating Mode Blower Speed

Explains DIP switch settings for heating mode blower speeds.

Control Configuration Links and Diagnostics

Field Test Mode

Procedure for entering and using the field test mode.

Configuring Unit Size Codes

Unit Size Code Configuration

Procedure to configure the unit size code for proper operation.

Diagnostic Codes and Status

LED 7 Segment Status / Error Code

Lists diagnostic codes and required actions for troubleshooting.

Integrated Control Diagnostic Codes

Error Code List (E105-E291)

Lists error codes and required actions for troubleshooting.

Integrated Control Diagnostic Codes (continued)

Error Code List (E292-E409)

Lists error codes and required actions for troubleshooting.

TABLE 15

OPERATING SEQUENCE SLP98DFV and Single-Stage Outdoor Unit

Details operating sequences for single-stage outdoor units.

TABLE 16

OPERATING SEQUENCE SLP98DFV and Two-Stage Outdoor Unit

Details operating sequences for two-stage outdoor units.

Troubleshooting Motor Operation (figure 10)

Motor Operation Verification

Step-by-step instructions for verifying motor operation.

Troubleshooting Motor Windings

Motor Winding Resistance Tests

Procedures for testing motor winding resistance (Test A & B).

Heating Components

Vent Calibration

Vent Calibration Initiation and Procedure

Steps for initiating and performing vent calibration.

Pressure Differential Measurement

Measuring Pressure Differential

Instructions for measuring pressure differential for troubleshooting.

Placement and Installation - Piping Specifications

General Vent Termination Guidelines

Vent Termination Clearances

US Installation Clearances

Clearances required for vent terminations in the USA.

Canadian Installation Clearances

Clearances required for vent terminations in Canada.

General Guidelines for Vent Terminations

Intake and Exhaust Piping Terminations

Condensate Piping and Trap Installation

Condensate Piping Guidelines

Guidelines for routing condensate piping.

IV-START-UP

Heating Start-Up Procedure

Step-by-step instructions for initiating heating operation.

Unit Operation and Safety Checks

Safety and Emergency Shutdown

Steps for performing a safety or emergency shutdown.

Heating System Service Checks

General checks for heating system operation.

Gas Pressure and Manifold Measurements

Manifold Pressure Measurement

Steps for measuring manifold gas pressure.

Operating Pressure Signal Measurement

Steps for measuring operating pressure signal (Delta P).

Proper Combustion Analysis

Combustion Parameter Checks

Guidelines for checking combustion parameters like CO2.

VI-TYPICAL OPERATING CHARACTERISTICS

VII-MAINTENANCE

Electrical and Winterizing Checks

Cleaning Heat Exchanger

Burner Assembly Cleaning

Burner Assembly Cleaning Procedure

Step-by-step guide for cleaning the burner assembly.

VIII- Wiring and Sequence of Operation

Heating Sequence - Two-Stage Thermostat

Details the heating operation sequence with a two-stage thermostat.

Heating Sequence - Single-Stage Thermostat

Details the heating operation sequence with a single-stage thermostat.

Sequence of Operation Flow Charts

Ignition and Low Fire with Two-Stage Thermostat

Flow chart for ignition and low fire operation with a two-stage thermostat.

High Fire Operation with Two-Stage Thermostat

High Fire Sequence Logic

Flow chart for high fire operation with a two-stage thermostat.

Heat Call Satisfied Logic

Ignition and Low Fire with Single-Stage Thermostat

Ignition and Low Fire Sequence

Flow chart for ignition and low fire operation with a single-stage thermostat.

Call for Cooling Sequence

Cooling Sequence Logic Flow Chart

Flow chart detailing the cooling operation sequence.

Continuous Indoor Blower Operation

IX- Field Wiring

Non-Communicating Thermostat Wiring Applications

Wiring diagrams for non-communicating thermostats.

Non-Communicating Thermostat Wiring

Thermostat Wiring Configurations

Wiring diagrams for various thermostat configurations.

Non-Communicating Thermostat Wiring (Continued)

Dual Fuel Heat Pump Wiring Applications

Wiring diagrams for dual fuel heat pump applications.

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