background image

27

O

O

O

O

O

P E R

P E R

P E R

P E R

P E RA

A

A

A

AT I O N A L

T I O N A L

T I O N A L

T I O N A L

T I O N A L

  C

  C

  C

  C

  C

H E C K

H E C K

H E C K

H E C K

H E C KS

S

S

S

S

  &   S

  &   S

  &   S

  &   S

  &   S

A F E T

A F E T

A F E T

A F E T

A F E T Y

Y

Y

Y

Y

  C

  C

  C

  C

  C

I R

I R

I R

I R

I RC U I T

C U I T

C U I T

C U I T

C U I T

  D

  D

  D

  D

  D

E S

E S

E S

E S

E SC R I P

C R I P

C R I P

C R I P

C R I PT I O N

T I O N

T I O N

T I O N

T I O N

is shipped set on HIGH.  High heat ships on MEDIUM and low heat is
shipped on MEDIUM-LO. These blower speeds should be adjusted
by the installer to match the installation requirements so as to pro-
vide the correct heating temperature rise and the correct cooling
CFM.

To adjust the circulator blower speed, proceed as follows:

1. Turn OFF power to the furnace.
2. Select the heating and cooling blower speeds that match

the installation requirements from the airflow table in the
Specification Sheet applicable to your model. (Please

 contact

your distributor or our website for the applicable Specification
Sheet referred to in this manual.)

3. Relocate desired motor leads  to the circulator blower heat

and cool speed terminals on the integrated control module.
(Terminals are identified as LO HEAT, HI HEAT and COOL (hot))
for *(M,D)H8 models and HEAT and COOL for *(M,H,D)S8
models). If a heating speed and the cooling speed are the
same, a jumper wire must be used between the heat and
cool terminals.

4. Connect all unused blower motor leads to the “PARK”

terminals on the integrated control module.  Any leads not
connected to the “PARK” terminals must be taped.

5. Turn ON power to furnace.
6. Verify proper temperature rise as outlined in 

Temperature

Rise section

.

C

C

C

C

C

IRCULATOR

IRCULATOR

IRCULATOR

IRCULATOR

IRCULATOR

 B

 B

 B

 B

 B

LOWER

LOWER

LOWER

LOWER

LOWER

 F

 F

 F

 F

 F

AN

AN

AN

AN

AN

 T

 T

 T

 T

 T

IMING

IMING

IMING

IMING

IMING

 A

 A

 A

 A

 A

DJUSTMENT

DJUSTMENT

DJUSTMENT

DJUSTMENT

DJUSTMENT

NOTE:  

NOTE:  

NOTE:  

NOTE:  

NOTE:  Items in this section refer to the air circulator blower fan 

air circulator blower fan 

air circulator blower fan 

air circulator blower fan 

air circulator blower fan in

the  *(M,D)H8 models, NOT to the induced draft blower. The induced
draft blower timing sequence is not adjustable.  The circulator blower
fan timing is adjustable only on models with optional “heating fan
OFF delay” adjustment pins or switches.  It is NOT adjustable in any
other circumstances.

As shipped, the circulator blower fan will remain on for 150 sec-
onds after the gas valve closes.  When a call for cooling occurs, the
circulator fan comes on and remains on for 45 seconds after the call
for cooling ends. During normal heating operation, the circulator
fan will come on approximately 34 seconds after the gas valve
opens.

O

N

O

F

F

O

N

O

F

F

150

SECOND

DELAY

100

SECOND

DELAY

Switch viewed in an upflow installation.

Adjustment Switch

O

O

O

O

O

P E R

P E R

P E R

P E R

P E RA

A

A

A

ATIONAL

TIONAL

TIONAL

TIONAL

TIONAL

  C

  C

  C

  C

  C

H E C K

H E C K

H E C K

H E C K

H E C KS

S

S

S

S

WARNING

T

O AVOID PERSONAL INJURY OR DEATH, DO NOT REMOVE ANY INTERNAL

COMPARTMENT COVERS OR ATTEMPT ANY ADJUSTMENT. 

E

LECTRICAL

COMPONENTS ARE CONTAINED IN BOTH COMPARTMENTS. 

C

ONTACT A

QUALIFIED SERVICE AGENT AT ONCE IF AN ABNORMAL FLAME APPEARANCE

SHOULD DEVELOP.

B

B

B

B

B

URNER

URNER

URNER

URNER

URNER

 F

 F

 F

 F

 F

LAME

LAME

LAME

LAME

LAME

The burner flames should be inspected with the burner compart-
ment door installed.  Flames should be stable, quiet, soft, and blue
(dust may cause orange tips but they must not be yellow).  Flames
should extend directly outward from the burners without curling,
floating, or lifting off.  Flames must not impinge on the sides of the
heat exchanger firing tubes.

Check the burner flames for: 
1. Good adjustment
2. Stable, soft and blue 
3. Not curling, floating, or lifting off. 

Burner Flame

A

A

A

A

A

UXILIARY

UXILIARY

UXILIARY

UXILIARY

UXILIARY

 L

 L

 L

 L

 L

IMIT

IMIT

IMIT

IMIT

IMIT

 C

 C

 C

 C

 C

ONTROL

ONTROL

ONTROL

ONTROL

ONTROL

Auto reset limits are located on or near the blower. To access this
auxiliary limit, disconnect the electrical power and remove the
blower door. The auxiliary limit control is designed to prevent fur-
nace operation in case of main blower failure on horizontal installa-
tions. It may also open if the power supply is interrupted while the
furnace is firing. The auxiliary limit control is suitable for both hori-
zontal right and horizontal left installations. Regardless of airflow
direction, it does not need to be relocated.

T

O

 

AVOID

 

PERSONAL

 

INJURY

 

OR

 

DEATH

,

 

DO

 

NOT

 

REMOVE

 

ANY

 

INTERNAL

 

COMPARTMENT

 

COVERS

 

OR

 

ATTEMPT

 

ANY

 

ADJUSTMENT

.

 

E

LECTRICAL

 

COMPONENTS

 

ARE

 

CONTAINED

 

IN

 

BOTH

 

COMPARTMENTS

.

 

C

ONTACT

 

A

 

QUALIFIED

 

SERVICE

 

AGENT

 

AT

 

ONCE

 

IF

 

AN

 

ABNORMAL

 

FLAME

 

APPEARANCE

 

SHOULD

 

DEVELOP

.

WARNING

S

SS

S

S

AFETY

AFETY

AFETY

AFETY

AFETY

  C

  C

  C

  C

  C

IRCUIT

IRCUIT

IRCUIT

IRCUIT

IRCUIT

  D

  D

  D

  D

  D

ESCRIPTION

ESCRIPTION

ESCRIPTION

ESCRIPTION

ESCRIPTION

G

G

G

G

G

ENERAL

ENERAL

ENERAL

ENERAL

ENERAL

A number of safety circuits are employed to ensure safe and proper
furnace operation.  These circuits serve to control any potential
safety hazards and serve as inputs in the monitoring and diagnosis
of abnormal function.  These circuits are continuously monitored
during furnace operation by the integrated control module.

Summary of Contents for DH8

Page 1: ...st dealers have a list of specific good safety practices follow them The precautions listed in this Installation Manual are intended as supplemental to existing practices However if there is a direct conflict between existing practices and the content of this manual the precautions listed here take precedence NOTE Please contact your distributor or our website for the applicable Specification Shee...

Page 2: ... CONDITION 12 CHECK 4 DEBRIS IN CLEANOUT 12 CHECK 5 LINER CONDITION 12 CHECK 6 DILUTION AIR 13 CHECK 7 COMPLETE THE INSTALLATION 13 FIX 1 LINER TERMINATION 13 FIX 2 CHANGE VENTING ARRANGEMENTS 13 FIX 3 REBUILD THE CROWN 13 FIX 4 RELINING 14 ELECTRICAL CONNECTIONS 14 WIRING HARNESS 15 115 VOLT LINE CONNECTIONS 15 FOSSIL FUEL APPLICATIONS 15 JUNCTION BOX RELOCATION 15 24 VOLT THERMOSTAT WIRING 16 SE...

Page 3: ...UPPLY PRESSURE MEASUREMENT 22 GAS MANIFOLD PRESSURE MEASUREMENT ANDADJUSTMENT 24 GAS INPUT RATE MEASUREMENT NATURAL GAS ONLY 26 TEMPERATURE RISE 26 CIRCULATOR BLOWER SPEED ADJUSTMENT 26 CIRCULATOR BLOWER FAN TIMING ADJUSTMENT 27 OPERATIONAL CHECKS 27 BURNER FLAME 27 AUXILIARY LIMIT CONTROL 27 SAFETY CIRCUIT DESCRIPTION 27 GENERAL 27 APPENDIX 28 TROUBLESHOOTING CHART 28 BLOWER PERFORMANCE DATA 31 M...

Page 4: ... BE PROPERLY WINTERIZED AND THE WATER SOURCE CLOSED IN THE EVENT THAT THE BUILDING MAY BE EXPOSED TO FREEZING TEMPERATURES AND WILL BE VACANT ANY HYDRONIC COIL UNITS SHOULD BE DRAINED AS WELL AND IN SUCH CASE ALTERNATIVE HEAT SOURCES SHOULD BE UTILIZED WARNING TO PREVENT POSSIBLE PROPERTY DAMAGE PERSONAL INJURY OR DEATH DUE TO ELECTRICAL SHOCK THE FURNACE MUST BE LOCATED TO PROTECT THE ELECTRICAL ...

Page 5: ...rated control module from damage By putting the furnace the control and the person at the same elec trostatic potential these steps will help avoid exposing the inte gratedcontrolmoduletoelectrostaticdischarge Thisprocedureis applicable to both installed and non installed ungrounded fur naces 1 Disconnect all power to the furnace Do not touch the integrated control module or any wire connected to ...

Page 6: ...CAN CSA B149 Installation Codes can also be ob tainedfrom CSA International CSA International CSA International CSA International CSA International 178 Rexdale Boulevard Etobicoke Ontario CanadaM9W1R3 Theratedheatingcapacityofthefurnaceshouldbegreaterthanor equal to the total heat loss of the area to be heated The total heat lossshouldbecalculatedbyanapprovedmethodorinaccordance To register your A...

Page 7: ...ionsystem Ensure the temperature of the return air entering the furnace is between 55 F and 100 F when the furnace is heating Provisionsmustbemadeforventingcombustionproducts outdoorsthroughaproperventingsystem Thelengthof fluepipecouldbealimitingfactorinlocatingthefurnace Ensureadequatecombustionairisavailableforthefurnace Improper or insufficient combustion air can expose buildingoccupantstogasc...

Page 8: ...ryers and any appliance not connected to the venting system Turn on any exhaust fans such as range hoods and bathroom exhausts so they shall operate at maximum speed Do not operate a summer exhaust fan Close fireplace dampers d Followthelightinginstructions Placetheappliancebeing inspected in operation Adjust thermostat so appliance shalloperatecontinuously e Testfordrafthoodequippedappliancespill...

Page 9: ...lpedinreducingheat ing cooling costs but have created a problem supplying combus tion and ventilation air for gas fired and other fuel burning appli ances Appliances that pull air out of the house clothes dryers exhaust fans fireplaces etc increase the problem by starving ap pliancesforair Housedepressurizationcancausebackdraftingorimpropercom bustion of gas fired appliances thereby exposing build...

Page 10: ...ey assembly with the three screws retained from step 5 onto the induced draft blower 10 Reinstall the induced draft blower rotating it 90 degrees clockwisefromtheoriginalupflowconfigurationusingthe four screws retained in step 3 Ensure the gasket located between the induced draft blower and the collector box is rotatedaccordingly 11 Reconnect the induced draft blower power leads NOTE If thewiresar...

Page 11: ...theach item Thisinspectionisbaseduponadrafttopicalreport MasonryChim ney Inspection and Relining issued by the Gas Research Institute While not yet finalized we believe this report represents the best informationonthissubjectwhichiscurrentlyavailable Proper Chimney Termination Check 1 Chimney channel free of solid and liquid fuel appliances Check 2 Change venting arrangements Fix 2 Crown in good c...

Page 12: ...ney Fix 4 C C C C CHECK HECK HECK HECK HECK 5 L 5 L 5 L 5 L 5 LINER INER INER INER INER C C C C CONDITION ONDITION ONDITION ONDITION ONDITION Ifametallinerispresent itmustbechecked Itcannotbeassumed thatallexistingmetallinersarecorrectlyinstalledandingoodcon dition Remove the lowest existing vent connector and examine the in side of the elbow or tee at the base of the liner A small amount of sootm...

Page 13: ...it in accordance with nationally recognized building codes or stan dards OnesuchstandardwhichmaybereferencedistheStandard forChimneys Fireplaces Vents andSolidFuelBurningAppliances ANSI NFPA 211 Next use a flashlight and small mirror to sight up the liner B vent must be supported so as to not come into direct contact with the chimneywallsortileliner Ifitisnot itcanprobablyberehungsoas to be accept...

Page 14: ...ports such as fire stops or thimbles must be used to prevent the B vent fromcomingintodirectcontactwiththetilelinerorchimneywalls Direct contact would result in higher heat loss with an increased possibilityofpoorventingsystemperformance It is not acceptable to vent one appliance inside the B vent and otherappliancesoutside TheexcessspacebetweentheBventand the chimney walls must be covered at the ...

Page 15: ...ontrolboard J J J J JUNCTION UNCTION UNCTION UNCTION UNCTION B B B B BOX OX OX OX OX R R R R RELOCATION ELOCATION ELOCATION ELOCATION ELOCATION EDGES OF SHEET METAL HOLES MAY BE SHARP USE GLOVES AS A PRECAUTION WHEN REMOVING HOLE PLUGS WARNING Line voltage connections can be made through either the right or left side panel The furnace is shipped configured for a right side electricalconnection Tom...

Page 16: ...S CCESSORIES CCESSORIES CCESSORIES E E E E ELECTRONIC LECTRONIC LECTRONIC LECTRONIC LECTRONIC A A A A AIR IR IR IR IR C C C C CLEANER LEANER LEANER LEANER LEANER HIGH VOLTAGE TO AVOID PERSONAL INJURY OR DEATH DUE TO ELECTRICAL SHOCK DISCONNECT ELECTRICAL POWER BEFORE SERVICING OR CHANGING ANY ELECTRICAL WIRING WARNING The furnace integrated control module is equipped with line volt ageaccessoryter...

Page 17: ...O ANT NO ANT NO ANT NO ANT NOTE TE TE TE TE The furnace will naturally derate itself with altitude Do not attempt to increase the firing rate by changing orifices or increasing the manifold pressure This can cause poor combustionandequipmentfailure High altitude installations may require both a pressure switch and anorificechange Thesechangesarenecessarytocompensatefor the natural reduction in the...

Page 18: ...loy tubing must not be used in exterior locations Uselistedgasapplianceconnectorsinaccordancewith theirinstructions Connectorsmustbefullyinthesame room as the furnace Protect connectors and semi rigid tubing against physical and thermal damage when installed Ensure aluminum alloy tubing and connectors are coated to protectagainstexternalcorrosionwhenincontactwith masonry plaster orinsulation orsub...

Page 19: ...ected follow the instructions on Page 3 of thismanual Allpropanegasequipmentmustconformtothesafetystandardsof theNationalBoardofFireUnderwriters NBFUManual58 For satisfactory operation propane gas pressure must be 10 inch WC at the furnace manifold with all gas appliances in operation Maintainingpropergaspressuredependsonthreemainfactors 1 Vaporizationrate dependingontemperatureoftheliquid and wet...

Page 20: ...isual light inspection or such that a sampling probe can be insertedintotheairstream Theaccesspanelmustbemadetopre vent air leaks when the furnace is in operation When the furnace is heating the temperature of the return air entering the furnace must be between 55 F and 100 F Whenafurnaceisinstalledsothatsupplyductscarryaircirculated by the furnace to areas outside the space containing the furnace...

Page 21: ... after 15 second prepurge expires Lowandhigh stagegasvalvesopenatendofigniterwarm upperiod deliveringgastoburnersandestablishingflame High stage gas valve closes after five seconds low stage gasvalveremainsopen Integrated control module monitors flame presence Gas valve will remain open only if flame is detected Circulatorblowerisenergizedonlowheatspeedfollowing a fixed thirty second blower on del...

Page 22: ...rfan Integratedcontrolmoduleperformssafetycircuitchecks Circulatorblowerisenergizedonlowheatspeed Electronic air cleaner terminals are energized Circulatorblowerruns integratedcontrolmodulemonitors safetycircuitscontinuously R and G thermostat contacts open completing the call for fan Circulator blower is de energized Electronic air cleaner terminals are de energized Furnaceawaitsthenextcallfromth...

Page 23: ...he gas valve must be within the rangespecifiedbelow Thesupplypressurecanbemeasuredatthe gasvalveinletpressurebossoratahosefittinginstalledinthegas piping drip leg The supply pressure must be measured with the burners operating To measure the gas supply pressure use the followingprocedure INLET OUTLET Gas Valve On Off Selector Switch White Rodgers Model 36G54 Two Stage Pressure Regulator Adjustment...

Page 24: ...itting must be installed prior to making the hose connection If using the inlet pressure boss on theWhite Rodgers36G54gasvalve thenusethe36GValvePressure Check Kit Goodman Part No 0151K00000S 3 TurnONthegassupplyandoperatethefurnaceandallother gasconsumingappliancesonthesamegassupplyline 4 Measure furnace gas supply pressure with burners firing Supply pressure must be within the range specified in...

Page 25: ... boss plug and sealwithahighqualitythreadsealer b White Rodgers 36G22 valve Turn outlet pressure test screw in to seal pressure port clockwise 7 in lb minimum 13 Turn ON electrical power and gas supply to the system 14 Closethermostatcontactstoprovideacallforheat 15 Retestforleaks Ifbubblesform SHUTOFFGASANDREPAIR ALLLEAKSIMMEDIATELY M M M M MODELS ODELS ODELS ODELS ODELS USING USING USING USING U...

Page 26: ...3 Conversion Factor hours to seconds 3600 sec hr Input Htg value x 3600 seconds per cubic foot Input 1 000 BTU ft3 x 3600 sec hr 34 sec ft3 Input 106 000 BTU hr This measured input must not be greater than the input indicatedontheunitratingplate 5 TurnONgasandrelightappliancesturnedoffinstep1 Ensure alltheappliancesarefunctioningproperlyandthatallpilot burnersareoperating T T T T TEMPERATURE EMPER...

Page 27: ...or cooling ends During normal heating operation the circulator fan will come on approximately 34 seconds after the gas valve opens ON OFF ON OFF 1 150 SECOND DELAY 100 SECOND DELAY 1 Switchviewedinanupflowinstallation AdjustmentSwitch O O O O OPER PER PER PER PERA A A A ATIONAL TIONAL TIONAL TIONAL TIONAL C C C C CHECK HECK HECK HECK HECKS S S S S WARNING TO AVOID PERSONAL INJURY OR DEATH DO NOT R...

Page 28: ...e fails to operate Integrated control module diagnostic LED LED LED LED LED is flashing TWO TWO TWO TWO TWO 2 flashes 2 2FLASHES Induced draft blower pressure switch contacts sticking Shorts in pressure switch circuit Inspect pressure switch hose Repair if necessary Inspect flue for blockage proper length elbows and termination Correct pressure switch setpoint or contact motion Tighten or correct ...

Page 29: ...correct replacement part Primarylimit circuitisopen Check burners for proper alignment Check flue and air inlet piping for blockage proper length elbows and termination Correct as necessary Check rollout limit Replace if necessary Check induced draft blower for proper performance Replace if necessary Tighten or correct wiring connection Repair short in 24 volt AC control safety circuit s Replace i...

Page 30: ...correct polarity Verify proper ground Correct if necessary Reverse red and blue wires connected to transformer Turn power OFF prior to repair Normal operation LED is steady on STEADY Furnace not operating Integrated control module diagnostic LED LED LED LED LED is flashing EIGHT EIGHT EIGHT EIGHT EIGHT 8 flashes 8FLASHES Problem with igniter circuit Improperly connected igniter Bad igniter Poor un...

Page 31: ...785 766 743 730 709 683 666 604 HIGH 4 0 2051 1983 1895 35 1812 37 1725 39 1627 1530 1439 M H S 80904B MED 3 5 1736 38 1708 39 1652 40 1611 41 1540 43 1475 1394 1307 MEDIUM MED LO 3 0 1493 45 1668 40 1459 46 1429 47 1389 48 1339 1274 1204 LOW 2 5 1200 56 1185 56 1180 56 1173 57 1158 58 1125 1125 1080 HIGH 5 0 2290 2229 2155 2047 1960 1837 1712 1584 M H S 80905C MED 4 0 1852 36 1820 37 1777 38 1719...

Page 32: ...0 4 0 5 Model Heating Speed As Shipped Motor Speed EXTERNAL STATIC PRESSURE Inches Water Column 0 6 Tons AC at 0 5 0 6 0 7 0 8 ESP CFM RISE CFM RISE CFM RISE CFM RISE CFM RISE CFM CFM CFM HIGH 3 0 1353 25 1290 26 1246 27 1199 28 1149 29 1116 1116 1099 GDS80453AXC MED 2 5 1183 28 1113 30 1098 30 1052 32 1039 32 1006 1012 969 MEDIUM MED LO 2 0 980 34 946 35 920 36 900 37 896 37 885 855 804 LOW 1 5 7...

Page 33: ...ise data is based on 2nd stage heat First stage heat is 75 of rise indicated above INSTALLATION IS TO BE ADJUSTED TO OBTAIN TEMPERATURE RISE WITHIN THE RANGE SPECIFIED ON THE RATING PLATE This chart is for information only For satisfactory operation external static pressure should not exceed value shown on the rating plate The above chart is for U S furnaces installed at 0 2000 feet At higher alti...

Page 34: ... MUST BE USED WHEN SERVICING 1 SET HEAT ANTICIPATOR ON ROOM THERMOSTAT AT 0 7 AMPS BLOWER PRIMARY LIMIT WH GR BK IGNITER SURFACE HOT PU RD 15 PIN PLUG C NO SWITCH PRESSURE BR SENSOR FLAME BK WH ROLLOUT LIMITS RAPID FLASHES REVERSED 115 VAC POLARITY VERIFY GND SYSTEM LOCKOUT RETRIES RECYCLES EXCEEDED 7 FLASHES LOW FLAME SIGNAL 5 FLASHES FLAME SENSE WITHOUT GAS VALVE 4 FLASHES OPEN HIGH LIMIT 3 FLAS...

Page 35: ...IMITS RAPID FLASHES REVERSED 115 VAC POLARITY VERIFY GND 7 FLASHES LOW FLAME SIGNAL 5 FLASHES FLAME SENSE WITHOUT GAS VALVE 4 FLASHES OPEN HIGH LIMIT 3 FLASHES PRESSURE SWITCH STUCK OPEN 2 FLASHES PRESSURE SWITCH STUCK CLOSED STEADY ON NORMAL OPERATION OFF CONTROL FAILURE 5 0 1 2 3 4 PU COLOR CODES PU PURPLE OR ORANGE YL YELLOW 6 7 C BK BLACK GR GREEN BR BROWN PK PINK RD RED GY GRAY BL BLUE WH WHI...

Page 36: ...HITE PU TO 115VAC 1 Ø 60 HZ POWER SUPPLY WITH OVERCURRENT PROTECTION DEVICE JUNCTION BOX SWITCH LINE H DOOR L GND LINE N DISCONNECT N SWITCH TEMP FIELD SPLICE SWITCH PRESS PROT DEVICE OVERCURRENT EQUIPMENT GND TERMINAL JUNCTION HI VOLTAGE FIELD HI VOLTAGE 115V LOW VOLTAGE FIELD LOW VOLTAGE 24V PLUG CONNECTION IGNITER FIELD GND IND N IGN N JUNCTION BOX OVERCURRENT PROTECTION POWER SUPPLY WITH TO 11...

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