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Daikin DM96VE User Manual

Daikin DM96VE
74 pages
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RSD6612013r9
September 2018
This manual is to be used by qualified, professionally trained HVAC technicians only. Daikin does not assume
any responsibility for property damage or personal injury due to improper service procedures or services
performed by an unqualified person. The material in this manual does not supercede manufacturers installa-
tion and operation instructions.
Copyright © 2015 - 2018
DM96VE/DC96VE
Two Stage Furnace
with Multi-Speed ECM Motor
Service Instructions
O
NLY
PERSONNEL
THAT
HAVE
BEEN
TRAINED
TO
INSTALL
,
ADJUST
,
SERVICE
OR
REPAIR
(
HEREINAFTER
, “
SERVICE
”)
THE
EQUIPMENT
SPECIFIED
IN
THIS
MANUAL
SHOULD
SERVICE
THE
EQUIPMENT
. T
HE
MANUFACTURER
WILL
NOT
BE
RESPONSIBLE
FOR
ANY
INJURY
OR
PROPERTY
DAMAGE
ARISING
FROM
IMPROPER
SERVICE
OR
SERVICE
PROCEDURES
. I
F
YOU
SERVICE
THIS
UNIT
,
YOU
ASSUME
RESPONSIBILITY
FOR
ANY
INJURY
OR
PROPERTY
DAMAGE
WHICH
MAY
RESULT
. I
N
ADDITION
,
IN
JURISDICTIONS
THAT
REQUIRE
ONE
OR
MORE
LICENSES
TO
SERVICE
THE
EQUIPMENT
SPECIFIED
IN
THIS
MANUAL
,
ONLY
LICENSED
PERSONNEL
SHOULD
SERVICE
THE
EQUIPMENT
. I
MPROPER
INSTALLATION
,
ADJUSTMENT
,
SERVICING
OR
REPAIR
OF
THE
EQUIPMENT
SPECIFIED
IN
THIS
MANUAL
,
OR
ATTEMPTING
TO
INSTALL
,
ADJUST
,
SERVICE
OR
REPAIR
THE
EQUIPMENT
SPECIFIED
IN
THIS
MANUAL
WITHOUT
PROPER
TRAINING
MAY
RESULT
IN
PRODUCT
DAMAGE
,
PROPERTY
DAMAGE
,
PERSONAL
INJURY
OR
DEATH
.
Cancer and Reproductive Harm -
www.P65Warnings.ca.gov
PROP 65 WARNING
FOR CALIFORNIA CONSUMERS
0140M00513-A
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Daikin DM96VE Specifications

General IconGeneral
ModelDM96VE
TypeGas Furnace
Efficiency RatingUp to 96% AFUE
Heating Capacity40, 000-120, 000 BTU/h
Stages of HeatingVariable Speed
Fuel TypeNatural Gas or Propane
Sound LevelQuiet operation
Blower TypeVariable-speed
Warranty12-year parts limited warranty

Summary

Important Information

Safety Warnings and Notices

Covers critical safety warnings, hazard symbols, and precautions for safe operation.

Operating Instructions

Read Before Operating

Essential safety checks and procedures to follow before starting the furnace.

Operating Procedure

Step-by-step guide for turning the furnace on and off.

Product Identification

Model Number Breakdown

Explains the coding system used for model numbers.

Model Descriptions and Specifications

Details specific furnace models, their configurations, and technical data.

Installation Considerations

Location Requirements

Guidelines for selecting a suitable and safe installation location.

Clearances and Accessibility

Specifies minimum required space around the unit for safety and maintenance.

Furnace Suspension and Thermostat Requirements

Details on furnace mounting methods and thermostat compatibility.

Combustion and Ventilation Air Requirements

Critical requirements for supplying air for combustion and ventilation.

Horizontal Applications and Considerations

Specific installation details for horizontal furnace configurations.

Propane Gas and High Altitude Installations

Special requirements for propane fuel and high altitude operation.

Gas Supply and Piping

Guidelines for connecting the gas supply and piping system.

Electrical Connections

Instructions for making safe and correct electrical connections.

Twinning and Blower Adjustment

Procedures for connecting multiple furnaces and adjusting blower speed.

System Operation

Filter Installation and Requirements

Proper installation and sizing of air filters for optimal performance.

Dip Switch Settings

Configuration settings for the control board via DIP switches.

Heat Mode Operation

Detailed sequence of operation for heating cycles.

Single Stage Heating and Cooling Modes

How the furnace operates with single-stage thermostats.

Accessories

Accessory Compatibility Chart

Table showing compatible accessories for different furnace models.

Filter Rack and Vent Kits

Specific details and installation notes for filter racks and vent kits.

Concentric Vent Conversion Kit

Information on concentric vents.

Wiring Diagrams

Control Board Wiring Diagrams

Visual representation of electrical connections for the control board.

Combustion Quality

Venting, Drainage, and Other Factors

Factors affecting combustion efficiency, including venting and condensate.

Servicing

Service Procedure Checklist

A list of diagnostic procedures and their corresponding reference numbers.

Polarization, Phasing, and Gas Rate

Electrical checks and gas flow measurement techniques.

Service Problem Analysis Guide

A guide to diagnose problems based on symptoms and causes.

Diagnostic Chart and Fault Recall

Interpreting control board LED codes and retrieving fault history.

Checking Voltage and Wiring

Procedures for testing electrical voltage and continuity.

Thermostat, Transformer, and Anticipator Checks

Testing control components like thermostats and transformers.

Blower Motor, Duct Static, and Temperature Rise

Checks related to airflow, static pressure, and temperature rise.

Primary Limit Control Checks

How to test the primary limit control switch.

Auxiliary Limit Control Checks

How to test the auxiliary limit control switch.

Flame Rollout, Induced Draft Blower, Gas Valve, and Burner Checks

Testing key components of the combustion and fuel system.

Orifice and Gas Pressure Checks

Procedures for checking and adjusting orifices and gas pressure.

Gas Manifold Pressure Adjustment

Detailed steps for adjusting gas manifold pressure.

Ignitor, Flashback, and Pressure Switch Checks

Testing ignition components, flashback conditions, and pressure switches.

Ignition Control and Delayed Ignition Checks

Testing the integrated ignition control and diagnosing delayed ignition.

Flame Sensor Checks

How to test and clean the flame sensor for proper operation.

Troubleshooting

Fault Code Descriptions

Explanations of error codes indicated by LED flashes on the control board.

Specific Faults and Remedies

Detailed troubleshooting steps for common furnace operational issues.

Maintenance

Annual Inspection and Filter Maintenance

Recommended annual checks and routine filter care for optimal performance.

Test Equipment and Heating Performance Test

Essential tools and procedures for evaluating furnace performance.

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