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proper unit grounding, turn off the electrical power and
perform the following check.

1. Measure resistance between the neutral (white) connection

and one of the burners.

2. Resistance should measure 10 ohms or less.

This furnace is equipped with a blower door interlock switch
which interrupts unit voltage when the blower door is opened
for servicing.  Do not defeat this switch.

HIGH VOLTAGE !

T

O

 

AVOID

 

THE

 

RISK

 

OF

 

INJURY

, 

ELECTRICAL

 

SHOCK

 

OR

 

DEATH

, 

THE

 

FURNACE

 

MUST

 

BE

 

ELECTRICALLY

 

GROUNDED

 

IN

 

ACCORDANCE

 

WITH

 

LOCAL

 

CODES

 

OR

 

IN

 

THEIR

 

ABSENCE

, 

WITH

 

THE

 

LATEST

 

EDITION

 

OF

 

THE

 

N

ATIONAL

 E

LECTRIC

 C

ODE

.

WARNING

WARNING

T

O

 

AVOID

 

THE

 

RISK

 

OF

 

INJURY

, 

ELECTRICAL

 

SHOCK

 

OR

 

DEATH

, 

THE

 

FURNACE

 

MUST

 

BE

 

ELECTRICALLY

 

GROUNDED

 

IN

 

ACCORDANCE

 

WITH

 

LOCAL

 

CODES

 

OR

, 

IN

 

THEIR

 

ABSENCE

, 

WITH

 

THE

 

LATEST

 

EDITION

 

OF

 

THE

 

N

ATIONAL

 E

LECTRICAL

 C

ODE

.

W

IRE

 

ROUTING

 

MUST

 

NOT

 

INTERFERE

 

WITH

 

CIRCULATOR

 

BLOWER

 

OPERATION

, 

FILTER

 

REMOVAL

 

OR

 

ROUTINE

 

MAINTENANCE

.

A 

REMOVABLE

 

PLUG

 

CONNECTOR

 

IS

 

PROVIDED

 

WITH

 

THE

 

CONTROL

 

TO

 

MAKE

 

THERMOSTAT

 

WIRE

 

CONNECTIONS

. T

HIS

 

PLUG

 

MAY

 

BE

 

REMOVED

, 

WIRE

 

CONNECTIONS

 

MADE

 

TO

 

THE

 

PLUG

, 

AND

 

REPLACED

. I

T

 

IS

 

 

RECOMMENDED

 

THAT

 

YOU

 

DO

 

NOT

 

CONNECT

 

MULTIPLE

 

WIRES

 

INTO

 

A

 

SINGLE

 

TERMINAL

. W

IRE

 

NUTS

 

ARE

 

RECOMMENDED

 

TO

 

ENSURE

 

ONE

 18 AWG 

WIRE

 

IS

 

USED

 

FOR

 

EACH

 

TERMINAL

. F

AILURE

 

TO

 

DO

 

SO

 

MAY

 

RESULT

 

IN

 

INTERMITTENT

 

OPERATION

.

STRONGLY

IMPORTANT NOTE

24 V

OLT

 T

HERMOSTAT

 W

IRING

As a two-stage non-communicating furnace, the furnace
integrated control module provides terminals for both “W1”
and “W2”, and “Y1” and “Y2” thermostat connections.  This
allows the furnace to support the following system
applications:  ‘Two-Stage Heating Only’, ‘Two-Stage Heating
with Single Stage Cooling’, and ‘Two-Stage Heating with Two-
Stage Cooling’.  Refer to the following figures for proper
connections to the integrated control module.

Low voltage connections can be made through either the
right or left side panel. Thermostat wiring entrance holes
are located in the blower compartment.  The following figure
shows connections for a  “heat/cool system”.

This furnace is equipped with a 40 VA transformer to
facilitate use with most cooling equipment.  Consult the
wiring diagram, located on the blower compartment door,
for further details of 115 Volt and 24 Volt wiring.

NOTE:

 For single stage cooling applications, a jumper may be

required between Y1 and Y2 at the furnace control in order to

achieve the desired single stage cooling airflow.  Use of ramp-
ing profiles and dehumidification features require a jumper be-
tween Y1 and O.

NOTE:

 Thermostat “R” required if outdoor unit is equipped

with a Comfort Alert™ module or if the outdoor unit is a part
of the ComfortNet™™ family of equipment AND is wired as a
non-communicating system.

S

INGLE

-S

TAGE

 H

EATING

 T

HERMOSTAT

 A

PPLICATION

A single-stage thermostat with only one heating stage may
be used to control this furnace.  The application of a single-
stage thermostat offers a 

timed

 transition from low to high

fire.  The furnace will run on low stage for a fixed period of
time before stepping up to high stage to satisfy the
thermostat’s call for heat.  The delay period prior to stepping
up can be set at either a fixed 5 minute time delay or a load
based variable time between 1 and 12 minutes (AUTO mode).
If the AUTO mode is selected, the control averages the cycle
times of the previous three cycles and uses the average to
determine the time to transition from low stage to high stage.

To use a single-stage thermostat, turn off power to the
furnace, move the thermostat selection DIP switch to the
OFF position. Set the desired transition time by setting the
transition delay DIP switch to the desired ON/OFF position.
Turn power back on. Refer to the following figure.

R

Y

C

NEU

Furnace Integrated

Control Module

Remote

Condensing Unit

(Single-Stage Cooling)

Dehumidistat

[Optional]

R

NOTE: To apply a single-stage Heating Thermostat, the thermostat

selector switch on the Integrated Control Module must be set

on single-stage.

Thermostat - Single-Stage Heating with Single-Stage Cooling

Figure 30

R

Y

C

Furnace Integrated

Control Module

Remote

Condensing Unit

(Single-Stage Cooling)

Dehumidistat

[Optional]

NEU

R

Thermostat  -  Two-Stage Heating with Single-Stage Cooling

Figure 31

Содержание DM96VC

Страница 1: ...ibutor or our website for the applicable Specification Sheet referred to in this manual TABLE OF CONTENTS SAFETY CONSIDERATIONS 3 SHIPPING INSPECTION 4 ELECTROSTATIC DISCHARGE ESD PRECAUTIONS 4 TO THE...

Страница 2: ...BLESHOOTING 43 NORMAL SEQUENCE OF OPERATION 43 POWER UP 43 HEATING MODE 43 COOLING MODE 45 FAN ONLY MODE 45 OPERATIONAL CHECKS 45 SAFETY CIRCUIT DESCRIPTION 45 INTEGRATED CONTROL MODULE 45 PRIMARY LIM...

Страница 3: ...IPMENT IF THE FURNACE ENVIRONMENT HAS THE POTENTIAL OF FREEZING THE DRAIN TRAP AND DRAIN LINE MUST BE PROTECTED THE USE OF ACCESSORY DRAIN TRAP HEATERS ELECTRIC HEAT TAPE AND OR RV ANTIFREEZE IS RECOM...

Страница 4: ...ommages permanents au cerveau et meme la mort Cette ventilation est n cessaire pour viter le danger d intoxication au CO pouvant survenir si un appareil produisant du monoxyde de carbone continue de f...

Страница 5: ...tions It must be installed per the installation instructions provided and per local and national codes It must be installed indoors in a building constructed on site It must be part of a ducted system...

Страница 6: ...ow and the guidelines provided in the Combustion and Ventilation Air Requirements section when selecting a furnace location Centrallylocatethefurnacewithrespecttotheproposed or existing air distributi...

Страница 7: ...ions the air conditioning coil must be downstream on the supply positive side of the furnace heat exchanger Counterflow Installation over a noncombustible floor Before setting the furnace over the ple...

Страница 8: ...akage corrosion and other deficiencies which could cause an unsafe condition 3 As far as practical close all building doors and windows and all doors between the space in which the appliance s connect...

Страница 9: ...rnace horizontally additional consideration must be given to the following FURNACE SUSPENSION If suspending the furnace from rafters or joists use 3 8 threaded rod and 2 x2 x1 8 angle iron as shown in...

Страница 10: ...w c 6 0 w c None Gas Altitude Kit Orifice M anifold Pressure Pressure Switch Change 0 7000 1 LPM 08 supports both Honeywell and White Rodgers 2 stage valves N OT E In Canada gas furnaces are only cert...

Страница 11: ...fied and may be installed as a non direct vent single pipe or direct vent dual pipe appliance A non direct vent installation requires only a vent flue pipe while a direct vent installation requires bo...

Страница 12: ...own in this manual or in unheated areas must be insulated with 1 2 thick closed cell foam Inspect piping for leaks prior to installing insulation TERMINATION LOCATIONS NOTE Refer to Location Requireme...

Страница 13: ...d to obtain a permit IPEX System 636 is a trademark of IPEX Inc Carefully follow the pipe manufacturers instructions for cut ting cleaning and solvent cementing PVC and or ABS The vent can be run thro...

Страница 14: ...lockage ALTERNATE VENT FLUE LOCATION The alternate vent flue location is the large hole directly in line with the induced draft blower outlet To use the alternate vent flue location refer to the follo...

Страница 15: ...llowing table for applicable length elbows and pipe diameter for construction of the vent flue pipe system of a non direct vent installation In addition to the vent flue pipe a single 90 elbow should...

Страница 16: ...ings must be joined per material manufacturer s specifications to prevent separation and flue gas leaks Both Pipes Terminated Outside Structure 1 4 per foot min slope 6 MAX Field Supplied Drain Tee on...

Страница 17: ...e insulation of the combustion air pipe may be required Use 1 2 thick closed cell foam insulation such as Armaflex or Insultube where required VENT FLUE AND COMBUSTION AIR PIPE TERMINATIONS The vent f...

Страница 18: ...ain location must meet local and nation codes The drain line between furnace and drain location must maintain a 1 4 inch per foot downward slope toward the drain Do not trap the drain line in any othe...

Страница 19: ...ow and secure with 1 clamp 5 Refer to Field Supplied Drain section for instructions on field supplied installed drain on outlet of furnace trap DRAIN EXITING LEFT SIDE 1 Install the 45 degree pipe hos...

Страница 20: ...8 Locate hose 5 and cut 3 from the non grommet end Discard the section without the grommet 9 Insert the cut end of tube 5 through the lower cabinet drain hole 10 Connect hose 6 hose 5 using 100 elbow...

Страница 21: ...m the right side requires re location of the trap to outside the cabinet Hose 4 x 3 Hose 5 Figure 27 DRAIN EXITING LEFT SIDE 1 Install a field supplied rubber coupling secured with a 1 1 4 clamp to en...

Страница 22: ...100 elbow inserted and clamped in the vent drain elbow 2 Remove two 1 plugs from left side of cabinet 3 Draining the Collector Box Remove the cap from the left side of the collector box drain port bot...

Страница 23: ...ect vent applications the cabinet opening to the junction box must be sealed air tight using either an UL approved bushing such as Heyco Liquid Tight or by applying non reactive UL approved sealant to...

Страница 24: ...cool system This furnace is equipped with a 40 VA transformer to facilitate use with most cooling equipment Consult the wiring diagram located on the blower compartment door for further details of 11...

Страница 25: ...nction is enabled during a combination call for cooling T Stat and dehumidification DEHUM Stat FOSSIL FUEL APPLICATIONS This furnace can be used in conjunction with a heat pump in a fossil fuel applic...

Страница 26: ...enu 1 ON Humidifier is turned on with a heat demand 2 OFF Humidifier remains off relay never closes 3 IND Humidifier will cycle with humidification demand independent of heat demand This mode allows t...

Страница 27: ...NS MUST BE PERFORMED BY A QUALIFIED INSTALLER OR SERVICE AGENCY This unit is configured for natural gas The appropriate manufacturer s propane gas conversion kit must be applied for propane gas instal...

Страница 28: ...ere Use listed gas appliance connectors in accordance with their instructions Connectors must be fully in the same room as the furnace Protect connectors and semirigid tubing against physical and ther...

Страница 29: ...48 kPa Isolate this unit from the gas supply piping system by closing its external manual gas shutoff valve before pressure testing supply piping system with test pressures equal to or less than 1 2 p...

Страница 30: ...urn air chamber CHECKING DUCT STATIC NEVER ALLOW THE PRODUCTS OF COMBUSTION INCLUDING CARBON MONOXIDE TO ENTER THE RETURN DUCT WORK OR CIRCULATION AIR SUPPLY WARNING Refer to your furnace rating plate...

Страница 31: ...that a sampling probe can be inserted into the airstream The access panel must be made to prevent air leaks when the furnace is in operation When the furnace is heating the temperature of the return...

Страница 32: ...omfort 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 5 AM11 1620 5 Side or bo...

Страница 33: ...RE MEASUREMENT GAS PRESSURE TEST This test is to be used for field test mode only and it will allow gas valve pressure to be checked at 100 firing rate 1 If both FAULT RECALL and LEARN push buttons ar...

Страница 34: ...leg or Honeywell VR9205 gas valve a field supplied hose barb fitting must be installed prior to making the hose connection If using the inlet pressure tap on the White Rodgers 36J54 gas valve then us...

Страница 35: ...wise to decrease pressure Replace regulator cover screw 11 Turn off all electrical power and gas supply to the system 12 Remove the manometer hose from the hose barb fitting or outlet pressure tap 13...

Страница 36: ...These blower speeds should be adjusted by the installer to match the installation requirements so as to provide the correct heating temperature rise and correct cooling CFM Use the dual 7 segment LED...

Страница 37: ...demand for 30 seconds The motor then ramps to 100 of the required airflow Aone 1 minute OFF delay at 100 of the cooling airflow is provided 50 CFM 1 2 min 100 CFM 100 CFM 1 min OFF OFF Figure 51 Profi...

Страница 38: ...must be connected as a traditional or non communicating system see Electrical Connections for wiring connections Model Tap Low Stage Cool High Stage Cool Low Stage Heat High Stage Heat A 403 596 422...

Страница 39: ...t then sends the demand to the ECM motor The table below lists the various ComfortNet systems the operating mode and airflow demand source For example assume the system is an air conditioner matched w...

Страница 40: ...n Furnace and Thermostat Figure 55 COMFORTNET COMPATIBLE FURNACE WITH NON COMFORTNET COMPATIBLE SINGLE STAGE AIR CONDITIONER Four wires are required between the furnace and thermostat Two wires are re...

Страница 41: ...y s th e a p p lic a t io n s o ft w a re re vis io n ID E N T IF IC A T IO N Submenu Item User Modifiable Options Comments Heat Airflow Trim HT TRM 10 to 10 in 2 increments default is 0 Trims the he...

Страница 42: ...FL A B C or D default is A Selects the airflow profile for the non communicating compatible single stage AC unit Cool ON Delay CL ON 5 10 20 or 30 seconds default is 5 seconds Selects the indoor blowe...

Страница 43: ...codes possible causes and corrective actions FAULT RECALL SEQUENCE Only allowed in standby mode while display is showing ON Hold fault recall push button for 2 5 seconds until display is blank and th...

Страница 44: ...r to repair Broken disconnected data wire s Furnace is installed as a legacy traditional system Check communications wiring data 1 data 2 wires Check wire connections at terminal block Verify furnace...

Страница 45: ...Circulator blower is de energized Electronic air cleaner terminal is de energized Furnace awaits next call from thermostat OPERATIONAL CHECKS The burner flames should be inspected with the burner comp...

Страница 46: ...MAINTENANCE WARNING DIAGNOSTIC CHART Refer to the Troubleshooting Chart in the back of this manual for assistance in determining the source of unit operational problems The dual 7 segment LED display...

Страница 47: ...INDUCED DRAFT AND CIRCULATOR BLOWERS The bearings in the induced draft blower and circulator blower motors are permanently lubricated by the manufacturer No further lubrication is required Check moto...

Страница 48: ...dd 5 Off Off Minus 5 On Off Add 10 Off On Minus 10 On On A Off Off B On Off C Off On D On On A Off Off B On Off C Off On D On On Disabled Off Enabled On Disabled Off Enabled On 25 Off Off 50 On Off 75...

Страница 49: ...ALTERNATES WITH F L 0 b 1 b 6 1 2 b 9 L O b 7 F C 2 b 5 b 3 b 4 d 0 0140F01169 REV A C 1 HIGH STAGE HEAT PUMP HEAT P 1 P 2 E F AUXILIARY SWITCH OPEN P 1 O n E 4 H I INTERNAL CONTROL FAULT NO POWER NO...

Страница 50: ...Call for Service icon illuminated ComfortNet thermostat scrolls Check Furnace message E0 Furnace lockout due to an excessive number of ignition retries 3 total LOCKOUT E0 Failure to establish fame Ca...

Страница 51: ...rs and ductwork for blockage Clean flters or remove obstruction Check circulator blower speed and performance Correct speed or replace blower motor if necessary Check burners for proper alignment Chec...

Страница 52: ...d improperly Blocked fue and or inlet air pipe blocked drain system or weak induced draft blower Incorrect pressure switch set point or malfunctioning switch contacts Loose or improperly connected wir...

Страница 53: ...ontrol module has lost communications with circulator blower motor MOTOR COMM b1 Loose wiring connection at circulator motor control leads Failed circulator blower motor Failed integrated control modu...

Страница 54: ...t scrolls Check Furnace message b7 MOTOR PARAMS b7 Furnace operates at reduced performance or Integrated control module LED display provides b9 error code b9 LOW ID AIRFLOW B9 Blocked filters Restrict...

Страница 55: ...AMPS LIMIT CONTROL AUXILIARY AUTO RESET PK WARNING DISCONNECT TRANSFORMER 40 VA PU GY N NO 3 BR 4 UNIT MUST BE PERMANENTLY GROUNDED AND CONFORM TO N E C AND LOCAL CODES COLOR CODES 1 E SWITCH PRESSUR...

Страница 56: ...e no less than one half 1 2 inch in size GAS VENT DIRECTLY BELOW KEEP CLEAR OF ALL OBSTRUCTIONS 4 INSPECTION The state or local gas inspector of the side wall horizontally vented gas fueled equipment...

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