Honeywell TRUEDRY DH150 User manual

Brand: Honeywell

Model: TRUEDRY DH150

Type: User manual

This manual is also suitable for

DH150

TrueDRY™ DH150

Dehumidification System

PROFESSIONAL INSTALLATION GUIDE

Assemble

Duct

Plumb

Wire

69-2271EFS-01

Must be installed by a trained, experienced technician

Read these instructions carefully. Failure to follow these instructions can

damage the product or cause a hazardous condition.

Installation Guide

69-2271EFS—01 ii

Read and save these instructions.

Need Help?

For assistance with this product please visit http://yourhome.honeywell.com

or call Honeywell Customer Care toll-free at 1-800-468-1502

® U.S. Registered Trademark.

• DonotinstallTrueDRYDH150'sexhaustendwithoutducting.

• TrueDRYDH150isdesignedtobeinstalledindoorsinaspacethatisprotectedfromrainand

flooding.

• Installtheunitwithspacetoaccessthebackorsidepanelsformaintenanceandservice.Donot

installwithservicepanelsinaccessible.

• Avoiddirectingthedischargeairatpeople,oroverthewaterinpoolareas.

• Ifusednearapoolorspa,becertainthereisnochancetheunitcouldfallintothewaterorbe

splashed,andthatitispluggedintoagroundfaultinterrupt(GFI)outlet.

• Donotusethedeviceasabenchortable.

• Toensurequietoperation,donotplacethedevicedirectlyonthestructuralsupportsofthehome.

Providevibrationisolationtominimizenoise.

• Adrainpanmustbeplacedundertheunitifinstalledabovealivingareaoraboveanareawhere

waterleakagecouldcausedamage.

Table of Contents

About your new dehumidifier

Maintaining ideal humidity .................................................................................. 1

Controls ................................................................................................................ 2

Specifications ....................................................................................................... 3

Installation

InstallationChecklist ........................................................................................... 4

IntendedApplication ...........................................................................................4

Ducting:InstalltoFitYourApplication.............................................................. 6

Plumbing ...............................................................................................................7

TerminalDescriptions .......................................................................................... 7

Wiring .................................................................................................................... 8

Checkout ............................................................................................................ 10

Maintenance

Cleaning .............................................................................................................. 11

Troubleshooting ................................................................................................. 12

Parts List ............................................................................................................ 16

Warranty ............................................................................................................. 17

TrueDRY DH150

1 69-2271EFS—01

TheHoneywell TrueDRYDH150ensuresthe homeis maintainedat properhumiditylevels throughitshigh perfor-

mance and efficiency.

Benefits

• Removesupto150pintsofwaterfromtheindoorair.

• Canbeductedforwhole-househumiditycontrol,oroperate

unductedtoaddressmoistureproblemareassuchasanatticor

crawl space.

• Easyaccesspanelsmakesservicequickandsimple.

Maintaining Ideal Humidity

Dewpointsandrelativehumidity(RH)affectthewayyourbodysenses

heat. Higher humidity levels cause the air to feel much hotter than the

actualtemperature.WhenTrueDRYisinstalledproperly,yourcooling

equipmentmaynotrunasmuchbecausedehumidifiedairfeelscooler

than humid air.

About the TrueDRY DH150 Dehumidifier

Idealhumidityisdefinedbyindustry

experts*asbeingbetween40-60%on

anaverageannualbasis.Whenindoor

humidityexceeds60%,thehomeismore

susceptibletomoldandmildewgrowth.

TrueDRYDH150safeguardsagainstexces-

sive humidity in the home year-round.

*American Society of Heating, Refrigerating and Air

Conditioning Engineers (ASHRAE).

MCR24780

0102030405060708090100

OPTIMUM

ZONE

BACTERIA

VIRUSES

FUNGI

MITES

RESPIRATORY

INFECTIONS

ALLERGIC RHINITIS

AND ASTHMA

CHEMICAL

INTERACTIONS

OZONE

PRODUCTION

ASHRAE RECOMMENDED WINTER DESIGN LEVEL

00159095808570756065505540453035202510150

001 4418312316210215110117014011019979593919

59 631031421811411

0117014011018969493919098878

09 221711311901601201001896959391909887868584838

58 801501201997959391909988

878685848382818089787

08 199888786868583828181808979787777767574737

57 0897978787777767675757474737372727

17079696

07 271717171717070707969686867676666656564646

WHAT THE AIR FEELS LIKE

HOW HOT THE HEAT-HUMIDITY COMBINATION MAKES IT FEEL.

EXAMPLE: AIR AT 90ºF WITH 50% RH FEELS LIKE 96ºF TO THE HUMAN BODY!

RELATIVE HUMIDITY (PERCENTAGE)

EXTREME DANGER

EXTREME CAUTION

CAUTION

M27328

DANGER

AIR TEMPERATURE

(DEGREES FAHRENHEIT)

SOURCE: TEMPERATURE - HUMIDIY INDEX WAS DERIVED BY R.G. STEADMAN, JOURNAL OF APPLIED METEOROLOGY, JULY 1979.

Installation Guide

69-2271EFS—01 2

VisionPRO IAQ Total Comfort System (YTH9421C1010)

•Controlsbothheating/coolinganddehumidification.

•Sensorincludedfordisplayingoutdoortemperature.

•Intuitiveuserinterfaceforeasy7-daytemperatureprogramming

•Easy-to-readbacklitdigitaldisplay.

•Maintenanceandservicereminders.

•Controlsotherindoorairqualityequipmentwhenyou’reready.

TheTrueDRYDH150maybeusedwithoneofthefollowingexternalcontrols:

TrueIAQ Digital Control (DG115EZIAQ)

•Automaticadjustmentsmaintainidealhumidity.

•Sensorfordisplayingoutdoortemperatureandhumidity.

•Showsactualanddesiredhumiditysettings.

•Advancedventilationprogrammingincludeseconomizingandextreme

condition shutdown.

•Maintenanceandservicereminders

•Controlsotherindoorairqualityequipmentwhenyou’reready.

Control Options

Manual Dehumidistat (H8908DSPST) and Automatic Ventilation

Controls (W8150A1001)

•Manualhumiditycontrolwithintuitivecomfortsettings.

•Integratedhumiditychartforaccuratecontrolinchangingoutdoorconditions.

•AutomaticW8150ventilationcontroltoASHRAEindustrycode,orfor

continuous operation.

TrueDRY DH150

3 69-2271EFS—01

InstallTrueDRYDH150accordingtoNationalElectricCodes.

Dimensions:

Specifications

Product weight:134lbs

Shipping weight:164lbs

Shipping dimensions:281/4in.Hx42in.Wx24in.D

Media Filter:MERV11,16in.Hx16in.Wx2in.D

Drain connection:3/4-in.threadedfemaleNPT

connection,withattached3/4-in.maleconnection.

Duct connections:Round10in.and6in.inlets.Oval

10in.x4in.outlet.

Cabinet:20gaugegalvanizedsteelpowder-coat

painted.

Input ratings

•Electricalinputvoltage:120VAC—1Phase—60Hz

nominal

•Inputcurrent:6.9amps

Output ratings

•Power transformer to R/C terminals:24VAC,

0.85A

•Energy Performance:3.6pintsperkilowatthour

(KWH).

Standards and approval body requirements

ETLtestedperULstandard474(ducteddehumidifier.)

Dry-Bulb

Temp

Wet-Bulb

Temp

Intake

Humidity

Capacity

(Pints/Day)

80°F 70°F 60%RH 150

70°F 61°F 60%RH 116

60°F 52°F 60%RH 88

Home Size

(square ft)

Dehumidifier Capacity Required to Maintain Desired Indoor RH*

60% RH Indoor (pints/day) 50% RH Indoor (pints/day) 40% RH Indoor (pints/day)

2080 49–54 55–58 71–78

2600 61–68 65–72 90–97

3120 75–82 79–86 95–110

*Basedonextremeclimateswhereoutdoorhumidityis70-90%RH.Forlessextremeclimates,largerhomescanbe

adequatelyservedwithlesscapacity.Actualrequirementsmayvary.

Airflow versus external static pressure

(0–1 in. water pressure) with collars attached

0in.WG 415CFM

0.4inWG. 365CFM

FRONT VIEW

6 DIAMETER

REAR VIEW

SIDE VIEW

37-1/2 (953) WITHOUT COLLARS

39-1/2 (1003) WITH COLLARS

19-15/16

(506)

20-5/8 (524)

10 DIAMETER

M27792

Insulation:Rvalue1

Compressor: Rotary-style

Refrigerant:2lb.,R-410.A

Operating Temp Range (outside cabinet):

56ºF-95ºF(13ºC-35ºC)

Operating Humidity Range: 0-99%RH

Installation Guide

69-2271EFS—01 4

Tools Required

- 3/8-in.hexdrive

- Drillorduct-cuttingtool

- Wirestripper/cutter

- Standard screwdriver

- Ducttape

- 8-in. round duct and starter collar

- 18–22gauge,5-bandthermostatwire

- 1/2-in.diameterdrainline(8ft)

- 1/2-in.drainclamps(quantity2)

Materials Provided

- Sheetmetalscrews(quantity9)

- 6-in. plastic duct collar

- 10-in.plasticductcollar

- 10-in.ovalx4in.plasticductcollar

Options:

- 1/2-in.drainp-trap(mayberequiredbylocalcode)

- Externalhumiditycontrol

•Manualdehumidistat(H8908DSPST),Auto

Ventilation(W8150A1001)

•TrueIAQ(DG115EZIAQ)

•VisionPROIAQ(YTH9421C1010)

Installation Checklist

WARNING:Installationmustbeperformedbyaqualifiedservicetechnicianandmustcomplywithlocal

codes.Removepowertothedevicebeforeinstallingorservicingthedevice.Failuretoconnectthe

device according to these instructions may result in damage to the device or the controls.

Intended Application

Fortheidealinstallation,drawairfromthecentralpartofthehomeandreturnittoisolatedareasofthehomelike

thebedrooms,den,utilityroom,orfamilyroom.Theductworkoftheexistingsystemcanbeusedtosupplyairto

the home.

TrueDRY DH150

5 69-2271EFS—01

M27793

M27794

Door and Collar Assembly

Door Install

Inserttabonthebottomofthedoorbetweenthefoam

installation and the metal side.

Push down on the plastic door latch and swing door shut.

Oncethedoorisshutreleasethedoorlatch.

Collar Install

Removethe2roundducts,1ovalduct,3sealsandsmall

bagofmountinghardwarefrominsidetherectangle

opening.

Adheresealsontothebackofeachductandmountthe

ducts to the front of the dehumidifier using screws pro-

vided.

Installation Guide

69-2271EFS—01 6

FlexductisrecommendedinconnectingtotheTrueDRYDH150collarstoreducevibrationnoise.

M24745

Electrical requirements:

115VACoutlet.Groundfault

interrupter(GFI)recommended.

Duct Sizing:Fortotalductlengths,useroundorrectangularductsizedaccordingly:

- 10-inchforlessthan25-ft

- 12-inchformorethan25-ft

Fortheoptionalfreshairventilationport,useroundinsulatedductsizedaccordingly:

- 6-inchroundforlengthsoflessthan50-ft.

- 8-inchroundforlengthsgreaterthan50-ft,orifmorethan100-cfmisrequired

Ducting: Install to Fit Your Application

Idealwhen…

• RunningTrueDRYDH150withA/Coperation.

• Minimizingdischargeairtemperature(DAT)

increase is preferred.

• Spacedictates.

Idealwhen…

• RunningTrueDRYDH150oppositeA/C

operation.RunningwithA/Coperationrequires

damperontheexhaustporttominimize

backdraftwhenTrueDRYDH150isnotonbut

A/Cis.

• MinimizingDATincreaseispreferred.

• Spacedictates.

Idealwhen…

• Dryingaspecificareaofthehouse.

• RunningwithA/Coperationrequiresbackdraft

damperontheexhaustporttominimize

backdraftwhenTrueDRYDH150isnotonbut

A/Cis.

• MinimizingDATincreaseispreferred.

Idealwhen…

• RunningTrueDRYDH150withA/Coperation.

• Dryingaspecificareaofthehouse.

• MinimizingDATincreaseispreferred.

TrueDRYDH150canbeductedintothecentralforcedairsys-

tem,oroperateasastand-aloneindesignated,high-humidity

zoneswithinthehome,suchasabasementorcrawlspace.

Main Return to Main Return

SUPPLY

RETURN

AIR HANDLER

M27965

TrueDRY

Main Return to Main Supply

SUPPLY

RETURN

AIR HANDLER

TrueDRY

M27966

BACKDRAFT

DAMPER

Dedicated Return to Main Supply

SUPPLY

RETURN

AIR HANDLER

TrueDRY

M27967

BACKDRAFT

DAMPER

SEPERATE

RETURN

Dedicated Return to Main Return

SUPPLY

RETURN

AIR HANDLER

M27968

TrueDRY

SEPERATE

RETURN

TrueDRY DH150

7 69-2271EFS—01

Connect1/2-in.draintubetomaleconnectiondrain

outlet.Securedraintubetoconnectorwithhoseclamp.

Run drain hose continuously downhill to an approved

drain or condensate pump. Route to drain with a trap if

possible.

PlaceTrueDRYDH150onsupportsthatraisethebase

abovethetopflangesonthedrainpanbeneathit.

Raisingitwilloptimizedrainflowbygravity.

Plumbing

Terminal Descriptions

CAUTION: Low-voltage Hazard.

Cancauseequipmentdamage.

DisconnectHVACequipmentbeforebeginning

installation.

Afour-blockwiringterminalislocatedonthesloped

endofTrueDRYDH150.

* Note:OuterscrewssecureblocktoTrueDRY

DH150.Notforwiring.

DHUM:  Compressorandfanoperationfordehumidification.

 R:  24Vhot

 FAN:  Fanactivationonlyforventilation.

 C: 24Vcommon

Bend10in.roundflexducttofitovertheDH150ovaloutlet.

Ducting to Oval Outlet

Installation Guide

69-2271EFS—01 8

Wiring

M27941

FAN

DHUM

M27795

DHUM

(COMPRESSOR

AND FAN)

FAN

GRN

TrueDRY DH150

9 69-2271EFS—01

Wire the TrueDRY DH150 according to the diagram that applies to your desired operation.

Followthisdiagramforductedoperationwithanexternalhumiditycontrol.

Wiring

TrueDRY

HVAC

MECHANICAL

DEHUMIDISTAT

THERMOSTAT

GYWRRc

GYWR C

M27797

DRY

CONTACTS

FAN

DPDT RELAY,

2.6A

DHUM

TrueDRY

HVAC

MECHANICAL

DEHUMIDISTAT

THERMOSTAT

GYWR C

M27798

DRY

CONTACTS

DHUM

FAN

DPDT

RELAY,

2.6A

EARD-6

AT120

DAMPER

AUX

REMOTE

W8150A

Forductedoperationwithexternalhumidityandventilationcontrol,followthisdiagram.

Installation Guide

69-2271EFS—01 10

FollowthisdiagramifusingTrueDRYDH150withVisionPROIAQ.

FollowthisdiagramifusingTrueDRYDH150withapowereddehumidistatsuchasTrueIAQ(DG115EZIAQ).

Wiring

HVAC

THERMOSTAT

GYWRRc

M27799

IF A THERMOSTAT OTHER THAN A TH5110, TH5220, TH5320, TH6110, TH6220, TH6320, TH8110,

TH8320, OR TH8321 IS USED, A RELAY MAY BE REQUIRED TO ISOLATE THE G WIRE.

PROGRAM ISU SETTING 60 TO Ø TO FORCE SYSTEM FAN ON WITH DEHUMIDIFICATION CALL.

DHUM

FAN

1215

Out

SENSOR

SWITCH

VENT

DEHUM

HUM

OUTDOOR

SENSOR

(PROVIDED)

EARD-6

TrueIAQ

TrueDRY

M27800

FAN

FURNACE BOARD

EQUIPMENT INTERFACE MODULE (EIM)

CONV.HP

O/B

AUX

AUX2

HEAT 1 RELAY

HEAT 2 RELAY

HEAT 3 RELAY

COOL 1 RELAY

COOL 2 RELAY

FAN RELAY

VISIONPRO IAQ

D-1

R-2

C-3

DHUM

FAN

TrueDRY

EARD-6

ApplypowertoTrueDRYDH150.TurnthehumiditycontroltoalowRH%leveltoinitiateahumiditycall.Confirm

thattheTrueDRYDH150compressorandfanturnon.Thefurnaceblowerwillalsoturnontocirculateair.Thiswill

takeuptotwominutes.Besuretoturnthisbackdown(oroff)whencheckoutiscomplete.Turningthehumidity

controltoOffwillturnTrueDRYDH150off.

Checkout

TrueDRY DH150

11 69-2271EFS—01

Onanannualbasis,maintenanceisrequiredtoensureTrueDRYrunsatpeakefficiency.

Cleaning

1 2

3 4

UnplugTrueDRYDH150beforebeginning

service. Push down the door release and

pull.Thefiltercanberemovedfromeither

side.

Gripfiltertabatbottomtoremove.

Replace with new filter.

Usinga1/2-in.hexdriveorstandardscrew-

driver,removetheeightscrewsoneither

sideoftheTrueDRYDH150.Thesideand

toppanelscanthenberemoved.Usinga

dampcloth,wipeexcessdustanddebris

fromblower,refrigerantcoils,andcompres-

sor coils. Reattach panels and collars when

finished.

Whenserviceiscomplete,initiateacallfor

dehumidificationandcheckthatthecom-

pressorandfanactivate.Ifusingthedigital

VisionPROIAQorTrueIAQcontrols,reset

maintenance reminders.

Checkthedrainconnectionanddrainline

toensureitisclearofdebrisandsludge.

Ensureallhoseconnectionsaresecureonce

maintenance of the drain lines is complete.

Installation Guide

69-2271EFS—01 12

Problem Recommended Troublshooting Steps

Nodehumidification,neither

impeller fan nor compressor run

with fan switch and ventilation

timerOFF.

1. Unitunpluggedornopowertooutlet.

2. Humidity control set too high or defective.

3. Loose connection in internal or control wiring.

4. DefectiveCompressorrelay.

5. Defectivecontroltransformer.

6. Low pressure Control open.

7. OptionalCondensatePumpSafetySwitchopen.

Nodehumidification,compressor

doesnotrunbutimpellerfanruns

with fan switch and ventilation

timerOFFandhumiditycontrol

turnedtoON.

1. Defectivecompressorruncapacitor.

2. Badconnectionincompressorcircuit.

3. Defectivecompressoroverload.

4. Defectivecompressor.

5. Defrostthermostatopen.

Impellerfanrunswithfanswitch

andventilationtimerOFF,but

compressor cycles on & off.

1. Lowambienttemperatureand/orhumiditycausingunittocyclethrough

defrost mode.

2. Defectivecompressoroverload.

3. Defectivecompressor.

4. Defrostthermostatdefective

5. Dirtyairfilter(s)orairflowrestricted.

6. Lowrefrigerantcharge,causingdefrostcontroltocycle.

7. Badconnectionincompressorcircuit.

CAUTION:ServicingtheTrueDRYDH150withitshighpressurerefrigerantsystemandhighvoltagecir-

cuitrypresentsahealthhazardwhichcouldresultindeath,seriousbodilyinjury,and/orpropertydamage.

Serviceshouldonlybeperformedbyaqualifiedservicetechnician.

Technical Description

Troubleshooting

TrueDRYDH150usesarefrigerationsystemsimilartoanaircondi-

tioner to remove heat and moisture from incoming air and add heat

totheairthatisdischarged.Hot,high-pressurerefrigerantgasis

routedfromthecompressortothecondensercoil.Therefrigerantis

cooledandcondensedbygivingupitsheattotheairthatisabout

tobedischargedfromtheunit.Therefrigerantliquidthenpasses

throughastrainerandcapillarytubingwhichcausestherefrigerant

pressureandtemperaturetodrop.Itnextenterstheevaporatorcoil

whereitabsorbsheatfromtheincomingairandevaporates.The

evaporatoroperatesinafloodedcondition,whichmeansthatallthe

evaporatortubescontainliquidrefrigerantduringnormaloperation.

Afloodedevaporatorshouldmaintainnearlyconstantpressureand

temperatureacrosstheentirecoil,frominlettooutlet.

Themixtureofgasandliquidrefrigerantentertheaccumulatorafter

leavingtheevaporatorcoil.Theaccumulatorpreventsanyliquid

refrigerantfromreachingthecompressor.Thecompressorevacuatesthecoolrefrigerantgasfromtheaccumulator

and compresses it to a high pressure and temperature to repeat the process.

CONDENSER

EVAPORATOR

CAPILLARY

TUBES

ACCUMULATOR

COMPRESSOR

STRAINER/FILTER

DRIER

M27404

TrueDRY DH150

13 69-2271EFS—01

Problem Recommended Troublshooting Steps

Impellerfandoesnotrunwithfan

switchineitherposition.Impeller

fan does not run with ventilation

timer activated. Compressor runs

brieflybutcycleson&offwith

humiditycontrolturnedtoON.

1. Looseconnectioninimpellerfancircuit.

2. Obstructionpreventsimpellerfanrotation.

3. Defectiveimpellerfan.

4. Defectiveimpellerfanrelay.

5. Defectiveimpellerfancapacitor.

Impellerfanrunswithfanswitch

ON.Impellerfandoesnotrunwith

ventilation timer activated.

1. Defectiveventilationtimer.

2. Timenotcorrectonventilationtimer.

3. Ventilationtimersettomanual&switchedOFF.

4. Defectivefanswitch.

Evaporatorcoilfrostedcontinu-

ously,lowdehumidifyingcapacity.

1. Defrostthermostatlooseordefective.

2. Low refrigerant charge.

3. Dirtyairfilter(s)orairflowrestricted.

4. Excessivelyrestrictiveductingconnectedtounit.

Unitnotprovidingventilation.

Ventilationtimernotoperating

correctly.

1. Iftimerisnotfunctioningcorrectlyresettimerandreprogram.

2. Checkcontrolwireconnections(checkconnectionsatfreshairdamper

also).

3. Defectivefreshairdamper.

4. Defectivefanswitch.

Unitremovessomewater,butnot

asmuchasexpected.

1. Airtemperatureand/orhumidityhavedropped.

2. Humiditymeterandorthermometerusedareoutofcalibration.

3. Unithasentereddefrostcycle.

4. Airfilterdirty.

5. Defectivedefrostthermostat.

6. Low refrigerant charge.

7. Airleaksuchasloosecoverorductingleaks.

8. Defectivecompressor.

9. Restrictiveducting.

10.OptionalCondensatePumpSafetySwitchopen.

Troubleshooting

Installation Guide

69-2271EFS—01 14

Refrigerant Charging

Iftherefrigerantchargeislostduetoserviceoraleak,anewchargemustbeaccuratelyweighedin.Ifanyofthe

oldchargeisleftinthesystem,itmustberecoveredbeforeweighinginthenewcharge.Refertotheunitnameplate

for the correct charge weight and refrigerant type.

Impeller Fan Replacement

Themotorizedimpellerfanisaunitaryassemblyconsistingofthemotorandimpellerfan.Ifdefective,thecomplete

assemblymustbereplaced.

1. Unplugthepowercord.

2. Removethecabinetaccesspanel.

3. Removethescrewattachingtheimpellerfansupportbrackettothebase.

4. Disconnecttheimpellerfanleadsinsidetheelectricbox.

5. Removefan/bracketassemblybyremoving3screwsfromthebracketandinletringassembly.

6. Removethedefectiveimpellerfanfromthebracketandreplacewithitwiththenewimpellerfan.

7. Reassemblethenewimpellerfanbyreversingtheaboveprocedure.Note:Therearetwopinsonthebacksideof

thecabinetthatmustalignwiththetwoholesintheimpellerfansupportbracket.

Compressor/Capacitor Replacement

Thiscompressorisequippedwithatwoterminalexternaloverloadandaruncapacitor,butnostartcapacitoror

relay

Checking Compressor Motor Circuits

Performthefollowingtestsiftheimpellerfanrunsbutthecompressordoesnotwiththefanswitchandventilation

timerOFFandthehumiditycontrolON.

1. Unplugtheunit;removethecabinetsideandtheelectricalconnectioncoveronthecompressortop.

2. PlugintheunitandturnthehumiditycontroltoON.Checkfor110voltsfromcompressorterminalRto

overloadterminal3usinganACvoltmeter.Ifvoltageispresent,gotostep3.Ifnovoltage,theremaybealoose

connectioninthecompressorcircuit.Testeachcomponentforcontinuity.Seetheappropriatesectionifadefect

is suspected.

3. Unplugtheunit,andthendisconnecttheredandyellowwiresfromcompressorterminalsR&S.Usingan

ohmmetercheckcontinuitybetweenthepointslistedbelow.

4. CompressorterminalsCandS:Nocontinuityindicatesanopenstartwinding.Thecompressormustbe

replaced.Normalstartwindingresistanceis3to7ohms.

5. CompressorterminalsCandR:Nocontinuityindicatesanopenrunwinding.Thecompressormustbereplaced.

Normalrunwindingresistanceis.5to2ohms.

6. CompressorterminalCandoverloadterminal1:Nocontinuityindicatesadefectiveoverloadlead.

7. Overloadterminals1and3:Ifthereisnocontinuity,theoverloadmaybetripped.Wait10minutesandtryagain.

Ifthereisstillnocontinuity,itisdefectiveandmustbereplaced.

8. CompressorterminalCandcompressorcase:Continuityindicatesagroundedmotor.Thecompressormustbe

replaced.

9. Disconnectthewiresfromtheruncapacitor.SettheohmmetertotheRx1scale.Thecapacitorisshortedand

mustbereplacedifcontinuityexistsacrossitsterminals.Ifthereisnoneedlemovementwiththemeterseton

theRx100000scale,thecapacitorisopenandmustbereplaced.

10.Reconnectthewirestothecompressorandcapacitor.Pluginandturnontheunit.Ifthecompressorfailsto

start,replacetheruncapacitor.

11.Iftheunitstilldoesnotstart,addingahard-startkit(relay&capacitor)willprovidegreaterstartingtorque.Ifthis

doesn'twork,thecompressorhasaninternalmechanicaldefectandmustbereplaced.

Troubleshooting

TrueDRY DH150

15 69-2271EFS—01

Replacing a Burned Out Compressor

Therefrigerantandoilmixtureinacompressorischemicallyverystableundernormaloperatingconditions.

However,whenanelectricalshortoccursinthecompressormotor,theresultinghightemperaturearccausesapor-

tionoftherefrigerantoilmixturetobreakdownintocarbonaceoussludge,averycorrosiveacid,andwater.These

contaminantsmustbecarefullyremovedotherwiseevensmallresidueswillattackreplacementcompressormotors

and cause failures.

Thefollowingprocedureiseffectiveonlyifthesystemismonitoredafterreplacingthecompressortoinsurethatthe

clean up was complete.

1. Thisprocedureassumesthatthepreviouslylistedcompressormotorcircuittestsrevealedashortedoropen

winding.

2. Removeandproperlydisposeofthesystemcharge.DONOTventtherefrigerantorallowittocontactyoureyes

orskin.

3. Removetheburnedoutcompressor.Userubberglovesifthereisanypossibilityofcontactingtheoilorsludge.

4. Tofacilitatesubsequentsteps,determinethetypeofburnoutthatoccurred.Ifthedischargelineshowsno

evidenceofsludgeandthesuctionlineisalsocleanorperhapshassomelightcarbondeposits,theburnout

occurred while the compressor was not rotating. Contaminants are therefore largely confined to the compressor

housing.Asingleinstallationofliquidandsuctionlinefilter/drierswillprobablycleanupthesystem.

Ifsludgeisevidentinthedischargeline,itwilllikelybefoundinthesuctionline.Thisindicatesthecompressor

burnedoutwillrunning.Sludgeandacidhavebeenpumpedthroughoutthesystem.Severalchangesoftheliquid

andsuctionfilter/drierswillprobablybenecessarytocleansethesystem.

5. Correctthesystemfaultthatcausedtheburnout.Consultthefactoryforadvice.

6. Installthereplacementcompressorwithanewcapacitorandanoversizedliquidlinefilter.

Inarunningburnout,installanoversizedsuctionlinefilter/drierbetweentheaccumulatorandcompressor.

Thoroughlyflushtheaccumulatorwithrefrigeranttoremovealltrappedsludgeandtopreventtheoilholefrom

becomingplugged.Astandingburnoutdoesnotrequireasuctionlinefilter/drier.

7. Evacuatethesystemwithagoodvacuumpumpandaccuratevacuumgauge.Leavethepumponthesystem

for at least an hour.

8. Operatethesystemforashortperiodoftime,monitoringthesuctionpressuretodeterminethatthesuction

filterisnotbecomingplugged.Replacethesuctionfilter/drierifpressuredropoccurs.Ifasevererunningburn

outhasoccurred,severalfilter/driersmayhavetobereplacedtoremovealloftheacidandmoisture.

NOTE:NEVERusethecompressortoevacuatethesystemoranypartofit.

Replacing a Compressor, Non-Burnout

Removetherefrigerantfromthesystem.Replacethecompressorandliquidlinefilter/drier.Chargethesystemto50

PSIGandcheckforleaks.Removethechargeandweighintherefrigerantquantitylistedonthenameplate.Operate

the system to verify performance.

Defrost Thermostat

Thedefrostthermostatisattachedtotherefrigerantsuctiontubebetweentheaccumulatorandthecompressor.It

willautomaticallyshutthecompressoroffifthelowsiderefrigeranttemperaturedropsduetoexcessivefrostfor-

mationontheevaporatorcoil.Theimpellerfanwillcontinuetorun,causingairtoflowthroughtheevaporatorcoil

andmelttheice.Whentheicehasmelted,theevaporatortemperaturewillriseandthethermostatwillrestartthe

compressor.

Troubleshooting

Installation Guide

69-2271EFS—01 16

Parts List

Description Part Number

HeatExchanger 50035445-001

Evaporator 50035445-002

CapillaryTubes.050in.x.124in.x59.00in. 50035445-003

Compressor—Toshiba8.1 50035445-004

Accumulator 50035445-005

Filter/Drier 50035445-006

Tube—Cond.toFilter 50035445-007

Tube—DischargeLine 50035445-008

Condensor 50035445-009

Impeller 50035445-010

Relay/Blower 50035445-011

45mFdCapacitor—Compressor 50035445-012

Transformer 50035445-013

Relay/Compressor 50035445-014

15mFdCapacitor—Impeller 50035445-015

Collar—10in. 50035445-016

Collar—Oval10in.x4in. 50035445-017

Collar 6 in. with damper 50035445-018

Leveling Foot 50035445-019

FilterMERVII 50035445-020

TRANSFORMER

RELAY

COMPRESSOR

HEAT

EXCHANGER

CONDENSOR

EVAPORATOR

CAPACITOR

COMPRESSOR

FILTER DRIER

DISCHARGE

TUBE

ACCUMULATOR

CAPILLARY

TUBES

M27801

TUBE COND.

TO FILTER

TUBE

DISCHARGE

LINE

COLLAR OVAL

10 INCH

LEVELING

FOOT

IMPELLER

RELAY/

BLOWER

CAPACITOR

IMPELLER

TrueDRY DH150

17 69-2271EFS—01

Honeywellwarrantsthisproducttobefreefromdefectsintheworkmanshipormaterials,undernormaluseand

service,foraperiodoffive(5)yearsfromthedateofpurchasebytheconsumer.Ifatanytimeduringthewarranty

periodtheproductisdeterminedtobedefectiveormalfunctions,Honeywellshallrepairorreplaceit(atHoneywell’s

option).

Iftheproductisdefective,

(i)returnit,withabillofsaleorotherdatedproofofpurchase,totheplacefromwhichyoupurchasedit;or

(ii)callHoneywellCustomerCareat1-800-468-1502.CustomerCarewillmakethedeterminationwhethertheprod-

uctshouldbereturnedtothefollowingaddress:HoneywellReturnGoods,Dock4MN10-3860,1885DouglasDr.N.,

GoldenValley,MN55422,orwhetherareplacementproductcanbesenttoyou.

Thiswarrantydoesnotcoverremovalorreinstallationcosts.Thiswarrantyshallnotapplyifitisshownby

Honeywellthatthedefectormalfunctionwascausedbydamagewhichoccurredwhiletheproductwasinthepos-

session of a consumer.

Honeywell’ssoleresponsibilityshallbetorepairorreplacetheproductwithinthetermsstatedabove.HONEYWELL

SHALLNOTBELIABLEFORANYLOSSORDAMAGEOFANYKIND,INCLUDINGANYINCIDENTALOR

CONSEQUENTIALDAMAGESRESULTING,DIRECTLYORINDIRECTLY,FROMANYBREACHOFANYWARRANTY,

EXPRESSORIMPLIED,ORANYOTHERFAILUREOFTHISPRODUCT.Somestatesdonotallowtheexclusionor

limitationofincidentalorconsequentialdamages,sothislimitationmaynotapplytoyou.

THISWARRANTYISTHEONLYEXPRESSWARRANTYHONEYWELLMAKESONTHISPRODUCT.THEDURATION

OFANYIMPLIEDWARRANTIES,INCLUDINGTHEWARRANTIESOFMERCHANTABILITYANDFITNESSFORA

PARTICULARPURPOSE,ISHEREBYLIMITEDTOTHEFIVE-YEARDURATIONOFTHISWARRANTY.Somestates

donotallowlimitationsonhowlonganimpliedwarrantylasts,sotheabovelimitationmaynotapplytoyou.

Thiswarrantygivesyouspecificlegalrights,andyoumayhaveotherrightswhichvaryfromstatetostate.

Ifyouhaveanyquestionsconcerningthiswarranty,pleasewriteHoneywellCustomerRelations,1985DouglasDr,

GoldenValley,MN55422orcall1-800-468-1502.InCanada,writeRetailProductsON15-02H,HoneywellLimited/

HoneywellLimitée,35DynamicDrive,Toronto,OntarioM1V4Z9.

5-Year Limited Warranty

HoneywellInternationalInc.

1985DouglasDriveNorth

GoldenValley,MN55422

http://yourhome.honeywell.com

Automation and Control Solutions

®U.S.RegisteredTrademark.

69-2271EFS—01M.S.12-08

Honeywell Limited-Honeywell Limitée

35DynamicDrive

Toronto,OntarioM1V4Z9

PrintedinU.S.A.onrecycled

papercontainingatleast10%

post-consumerpaperfibers.

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Honeywell TRUEDRY DH150 User manual

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