Amana Apg 16 m series User manual









Prior to installation, thoroughly familiarize yourself with this

Installation Manual. Observe all safety warnings. During in-

stallation or repair, caution is to be observed.

It is your responsibility to install the product safely and to

educate the customer on its safe use.





Ax this manual and Users Information

Manual adjacent to the unit.

19001 Kermier Rd., Waller, TX 77484

www.goodmanmfg.com • www.amana-hac.com

These installation instructions cover the installation

of single package heating and cooling units. See the

Specication Sheet applicable to your model for information

regarding accessories.

  Please contact your distributor or our website for

the applicable Specication Sheet referred to in this manual.

This Forced Air Central Unit Design complies with re-

quirements embodied in The American National Standard /

National Standard of Canada shown below:



“IMPORTANT - This product has been designed and manufactured to meet ENERGY STAR®

criteria for energy e󰀩ciency when matched with appropriate coil components. However,

proper refrigerant charge and proper air ow are critical to achieve rated capacity and

e󰀩ciency. Installation of this product should follow the manufacturer’s refrigerant charging

and air ow instructions. 

󰀩”

IOA-3012F

05/2021

































 

  

  

 5

  5

 

  

  

  

  

 

 

 

 

 

 8

 9

  9

 9

  9

  

  

  

 

 

  

  

  

 

  

  

 

  

 

 

  

  

 

  

  

  

  

  

 

  

  

 

  

  

  

   ........................... 18

  ......................................... 18

   ..................... 19

   ................. 19

.................................................. 19

 ... 19

.......................................... 19

  

  ................ 19

 

............................................... 19

 

  

  

 

 







 

  

  

 

 

 

 

  

 

  

  

  

 

 

 

  

  

  

   

  

  

  

  







 

  









When reporting shortages or damages, or ordering repair

parts, give the complete unit model and serial numbers as

stamped on the unit’s nameplate.

Replacement parts for this appliance are available through

your contractor or local distributor. Your nearest distributor

can be located online at 

or by contacting:

HOMEOWNER’S SUPPORT

GOODMAN COMPANY, L.P.

19001 KERMIER ROAD

WALLER, TX 77484

855-770-5678





Before installing this unit, please read this manual to famil-

iarize yourself on the specic items which must be adhered

to, including maximum external static pressure to unit, air

temperature rise, minimum or maximum CFM and motor

speed connections.



A warranty certicate is provided with the unit. Read the war-

ranty carefully and note what is covered. Keep the warranty

certicate in a safe place so you can nd it when necessary.

Keep this literature in a safe place for future reference.













































































































































RISQUE D’INCENDIE OU D’EXPLOSION

ONSIGNES

É CURITÉ

ONT

UIVIES

À L

ETTRE

, C

ELA

EUT

NTRAÎNER

ORT

, D

RAVES

LESSURES

OMMAGES

ATÉRIELS

. N

AMAIS

É RIFIER

RÉ SENCE

UITES

OYEN

UNE

LAMME

. V

É RIFIER

OUS

ACCORDS

TILISANT

OLUTION

AVONNEUSE

OMMERCIALE

ONÇ UE

PÉ CIALEMENT

OUR

ÉTECTION

UITES

. U

NCENDIE

XPLOSION

ISQUE

RODUIRE

, C

EUT

NTRAÎNER

ORT

, D

LESSURES

OMMAGES

ATÉRIELS

CARBON MONOXIDE POISONING HAZARD

Failure To Follow The Steps Outlined Below For Each Appliance

Connected To The Venting System Being Placed Into Operation

Could Result In Carbon Monoxide Poisoning Or Death. The

Following Steps Shall Be Followed For Each Appliance Connected

To The Venting System Being Placed Into Operation, While All

Other Appliances Connected To The Venting System Are Not In

Operation:

1) Seal Any Unused Openings In The Venting System.

2) Inspect The Venting System For Proper Size And Horizontal

Pitch, As Required In The National Fuel Gas Code, Ansi

Z223.1/nfpa 54 Or The Natural Gas And Propane Installation Code,

Csa B149.1 And These Instructions. Determine That There Is No

Blockage Or Restriction, Leakage, 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)

Connected To The Venting System Are Located And Other Spaces

Of The Building.

4) Close Fireplace Dampers.

5) Turn On Clothes Dryers And Any Appliance Not Connected To

The Venting System. Turn On Any Exhaust Fans, Such As Range

Hoods And Bathroom Exhausts, So They Are Operating At

Maximum Speed. Do Not Operate A Summer Exhaust Fan.

6) Follow The Lighting Instructions. Place The Appliance Being

Inspected Into Operation. Adjust The Thermostat So Appliance Is

Operating Continuously.

7) Test For Spillage From Draft Hood Equipped Appliances At The

Draft Hood Relief Opening After 5 Minutes Of Main Burner

Operation. Use The Flame Of A Match Or Candle.

8) If Improper Venting Is Observed During Any Of The Above Tests,

The Venting System Must Be Corrected In Accordance With The

National Fuel Gas Code, Ansi Z223.1/nfpa 54 And/or Natural Gas

And Propane Installation Code, Csa B149.1.

9) After It Has Been Determined That Each Appliance Connected

To The Venting System Properly Vents When Tested As Outlined

Above, Return Doors, Windows, Exhaust Fans, Fireplace Dampers

And Any Other Gas-fired Burning Appliance To Their Previous

Conditions Of Use.

RISQUE D’INTOXICATION AU MONOXYDE DE CARBONE

Si les étapes décrites ci-dessous ne sont pas suivies pour chacun

des appareils raccordés au système de ventilation au moment

de sa mise en marche, cela peut entraîner une intoxication au

monoxyde de carbone ou la mort. Les étapes suivantes doivent

être suivies pour chacun des appareils raccordés au système de

ventilation au moment de sa mise en marche, alors que tous les

autres appareils raccordés au système de ventilation ne sont

pas en marche:

1) Sceller toutes les ouvertures inutilisées du système de

ventilation.

2) Inspecter le système de ventilation afin de vérifier si la taille

et l’inclinaison par rapport à l’horizontale sont conformes aux

exigences du National Fuel Gas Code, ANSI Z223.1/NFPA 54 ou

du Code d’installation du gaz naturel et du propane, CSA B149.1

et à ces instructions. Vérifier qu’il n’y pas d’obstruction ou de

pourraient entraîner une situation dangereuse.

3) Si possible, fermer toutes les portes et fenêtres du bâtiment

ainsi que toutes les portes séparant l’endroit où se trouvent les

appareils raccordés au système de ventilation et less autres

zones du bâtiment.

4) Fermer le registre des foyers.

5) Mettre les sécheuses en marche ainsi que tous les autres

appareils qui ne sont pas raccordés au systéme de ventilation.

Mettre en marche tous les ventilateurs de tirage, comme celui

des hottes de cuisine et des salles de bains, et les régler à la

puissance maximale. Ne pas mettre en marche les ventilateurs

d’été.

6) Suivre les instructions d’allumage. Mettre en marche

l’appareil soumis à l’inspection. Régler le thermostat de manièr

à ce que l’appareil fonctionne en continu.

7) Vérifier la présence de fuite au niveau de l’ouverture du

coupe-tirage des appareils qui en sont dotés après 5 minutes de

fontionnement du brûleur principal. Utiliser la flamme d’une

allumette ou d’une bougie.

8) Si un problème de ventilation est observé pendant l’un des

essaid décrits ci-dessus, des correctifs doivent être apportés au

système de ventilation conformé National Fuel Gas Code, Ansi

Z223.1/nfpa 54 And/or Natural Gas And Propane Installation

Code, Csa B149.1.

9) Une fois qu’il été déterminé que chaque appareil raccordé au

système de ventilation fontionne correctement au moyen des

essais décrits ci-dessus, les portes, les fenêtres, les ventilateurs,

les registres de foyer et tous les autres appareils de combustion

alimentés au gaz doivent être remis dans leur état initial.













       

Rated performance is achieved after 20 hours of operation.

Rated performance is delivered at the specied airow. See

outdoor unit specication sheet for split system models or

product specication sheet for packaged and light commer-

cial models. Specication sheets can be found at www.ama-

na-hac.com for Amana®brand products. Within the website,

please select the residential or commercial products menu

and then select the submenu for the type of product to be

installed, such as air conditioners or heat pumps, to access

a list of product pages that each contain links to that model’s

specication sheet.

To assure that your unit operates safely and e󰀩ciently, it

must be installed, operated, and maintained in accordance

with these installation and operating instructions, all local

building codes and ordinances, or in their absence, with the

latest edition of the National Fuel Gas Code NFPA 54/ANSI

Z223.1 and National Standard of Canada CAN/CSA B149

Installation Codes.

The heating and cooling capacities of the unit should be

greater than or equal to the design heating and cooling loads

of the area to be conditioned. The loads should be calculated

by an approved method or in accordance with A.S.H.R.A.E.

Guide or Manual J - Load Calculations published by the Air

Conditioning Contractors of America.

B10259-216

CO can cause serious illness including permanent brain

damage or death.

Advertencia especial para la instalación de calentadores ó manejadoras

de aire en áreas cerradas como estacionamientos ó cuartos de servicio.

B10259-216

El monóxido de carbono puede causar enfermedades severas

como daño cerebral permanente ó muerte.

Las emisiones de monóxido de carbono pueden circular a través

del aparato cuando se opera en cualquier modo.

B10259-216

RISQUE D'EMPOISONNEMENT AU MONOXYDE DE CARBONE

Le monoxyde de

des

carbone peut causer des maladies graves telles que

dommages permanents au cerveau et meme la mort.

Cette ventilation est nécessaire pour éviter le danger d'intoxication

au CO pouvant survenir si un appareil produisant du monoxyde

de carbone continue de fonctionner au sein de la zone confinée.

Obtain from:

American National Standards Institute

25 West 43rd Street, 4th Floor

New York, NY 10036



Check the carton upon arrival for external damage. If dam-

age is found, a request for inspection by carrier agent should

be made in writing immediately.

Carefully inspect the unit for damage including damage to

the cabinetry. Any bolts or screws which may have loosened

in transit must be re-tightened. In the event of damage, the

receiver should:

1. Make notation on delivery receipt of any visible

damage to shipment or container.

2. Notify carrier promptly and request an inspection.

3. In case of concealed damage, carrier should be

notied as soon as possible-preferably within 5 days.

4. File the claim with the following supporting documents:

a. Original Bill of Lading, certied copy, or indemnity

bond.

b. Original paid freight bill or indemnity in lieu thereof.

c. Original invoice or certied copy thereof, showing

trade and other discounts or reductions.

d. Copy of the inspection report issued by carrier

representative at the time damage is reported to

the carrier. The carrier is responsible for making

prompt inspection of damage and for a thorough

investigation of each claim. The distributor or

manufacturer will not accept claims from dealers

for transportation damage.

 When inspecting the unit for transportation damage,

remove all packaging materials. Recycle or dispose of the

packaging material according to local codes.











  Remove wood shipping rails prior to

installation of the unit.



• For proper ame pattern within the heat exchanger

and proper condensate drainage, the unit must be

mounted level.

• The ue outlet hood must be at least 12 inches from

any opening through which ue gases could enter

a building, and at least three feet above any forced

air inlet located within ten feet. The economizer/

manual fresh air intake/motorized fresh air intake

and combustion air inlet mounted on the unit are not

a󰀨ected by this restriction.

• To avoid possible corrosion of the heat exchanger,

do not locate the unit in an area where the outdoor

air (i.e. combustion air for the unit) will be frequently

contaminated by compounds containing chlorine or

uorine. Common sources of such compounds include

swimming pool chemicals and chlorine bleaches, paint

stripper, adhesives, paints, varnishes, sealers, waxes

(which are not yet dried) and solvents used during

construction and remodeling. Various commercial and

industrial processes may also be sources of chlorine/

uorine compounds.

• To avoid possible illness or death of the building

occupants, do NOT locate outside air intake device

(economizer, manual fresh air intake, motorized

fresh air intake) too close to an exhaust outlet, gas

vent termination, or plumbing vent outlet. For specic

distances required, consult local codes.

• Allow minimum clearances from the enclosure for re

protection, proper operation, and service access (see

appendix). These clearances must be permanently

maintained.

• The combustion air inlet and ue outlet hoods on the

unit must never be obstructed. If used, do not allow

the economizer/manual fresh air damper/ motorized

fresh air damper to become blocked by snow or debris.

In some climates or locations, it may be necessary to

elevate the unit to avoid these problems.

• When the unit is heating, the temperature of the return

air entering the unit must be between 50° F and 100° F.

• Units manufactured on or after May 1, 2017 are not

permitted to be used in Canada for heating of buildings

or structures under construction.



• When the unit is installed on the ground adjacent

to the building, a level concrete (or equal) base is

recommended. Prepare a base that is 3” larger than

the package unit footprint and a minimum of 3” thick.

• The base should also be located where no runo󰀨 of

water from higher ground can collect in the unit.





To ensure proper condensate drainage, unit must be

installed in a level position.

•To avoid possible property damage or personal injury,

the roof must have su󰀩cient structural strength to

carry the weight of the unit(s) and snow or water

loads as required by local codes. Consult a structural

engineer to determine the weight capabilities of the

roof.

• The unit may be installed directly on wood oors or on

Class A, Class B, or Class C roof covering material.

• To avoid possible personal injury, a safe, at surface

for service personnel should be provided.





• Su󰀩cient structural support must be determined prior

to locating and mounting the curb and package unit.

• Ductwork must be constructed using industry

guidelines. The duct work must be placed into the

roof curb before mounting the package unit.

• Curb insulation, cant strips, ashing and general

roong material are furnished by the contractor.















  If using bottom discharge with roof

curb, ductwork should be attached to the curb prior to install-

ing the unit. Ductwork dimensions are shown in roof curb

installation instructions.

Refer to the Roof Curb Installation Instructions for proper

curb installation. Curbing must be installed in compliance

with the National Roong Contractors Association Manual.

Lower unit carefully onto roof mounting curb. While rigging

unit, center of gravity will cause condenser end to be lower

than supply air end.





: This unit is factory set to operate on natural

gas at the altitudes shown on the rating plate.















The rating plate is stamped with the model number, type of

gas and gas input rating. Make sure the unit is equipped to

operate on the type of gas available. Conversion to LP gas is

permitted with the use of a factory authorized conversion kit.

Contact your distributor or refer to the specication sheet for

your model for a listing of approved LP gas conversion kit(s).

Refer to the Installation Manual provided with the LP kit for

conversion from natural gas to propane gas.

Natural Min. 5.0" W.C., Max. 10.0" W.C.

Propane Min. 11.0" W.C., Max. 13.0" W.C.



Inlet Gas Pressure Must Be Within the Minimum and Maxi-

mum Value Shown in Table Above.

The minimum supply pressure should not vary from that

shown in the Inlet Gas Pressure table because this could

prevent the unit from having dependable ignition. In addition,

gas input to the burners must not exceed the rated input

shown on the rating plate. Overring of the unit could result

in premature heat exchanger failure.



Installation of this furnace at altitudes above 2000 ft (610 m)

shall be made in accordance with the Listed High Altitude

Conversion Kit available with this furnace.

D’installation de ce générateur de chaleur à des altitudes

supérieures à 2000 pi (610 m) doit être e󰀨ectuée conformé-

ment aux instructions accompagnant la trousse de conver-

sion pour haute altitude fournie avec cet appareil.

The gas/electric units naturally derate

with altitude. Do not attempt to increase the r ing rate by

changing orices or increasing the manifold pressure. This

can cause poor combustion and equipment failure. At all alti-

tudes, the manifold pressure must be within 0.3 inches W.C.

of that listed on the nameplate for the fuel used. At all alti-

tudes and with either fuel, the air temperature rise must be

within the range listed on the unit nameplate. Contact your

distributor or refer to the specication sheet for your model

for listing of approved high altitude conversion kit(s). Refer

to the Installation Manual provided with the high altitude kit

for altitude adjustments.

 No changes are required up to 2,000 feet. Use the

appropriate high altitude kit above 2,000 feet.



To avoid possible unsatisfactory opera-

tion or equipment damage due to under ring of equipment,

do not undersize the natural/propane gas piping from the me-

ter/tank to the unit. When sizing a trunk line, include all appli-

ances on that line that could be operated simultaneously.

The rating plate is stamped with the model number, type of

gas and gas input rating. Make sure the unit is equipped to

operate on the type of gas available. The gas line installa-

tion must comply with local codes, or in the absence of local

codes, with the latest edition of the National Fuel Gas Code

NFPA 54/ANSI Z223.1.





      

10 132 278 520 1050 1600

20 92 190 350 730 1100

30 73 152 285 590 980

40 63 130 245 500 760

50 56 115 215 440 670

60 50 105 195 400 610

70 46 96 180 370 560

80 43 90 170 350 530

90 40 84 160 320 490

100 38 79 150 305 460

Pressure = .50 PSIG or less and Pressure Drop of 0.3" W.C. (Based

on 0.60 Specific Gravity Gas)







Btuh Furnace Input

Calorific Value of Gas







Refer to the Proper Piping Practice drawing for the general

layout at the unit. The following rules apply:

1. Use black iron pipe and ttings for the supply piping.

The use of a ex connector and/or copper piping

is permitted as long as it is in agreement with local

codes.

2. Use pipe joint compound on male threads only. Pipe

joint compound must be resistant to the action of the

fuel used.

3. Use ground joint unions.

4. Install a drip leg to trap dirt and moisture before it can

enter the gas valve. The drip leg must be a minimum

of three inches long.

5. Use two pipe wrenches when making connection to

the gas valve to keep it from turning.

6. Install a manual shut-o󰀨 valve in a convenient location

(within six feet of unit) between the meter and the unit.

7. Tighten all joints securely.

8. The unit must be connected to the building piping by

one of the following methods:

• Rigid metallic pipe and ttings

• Semirigid metallic tubing and metallic fittings

(Aluminum alloy tubing must not be used in exterior

locations)

• Listed gas appliance connectors used in accordance

with the terms of their listing that are completely in

the same room as the equipment

• In the prior two methods above the connector or

tubing must be protected from physical and thermal

damage. Aluminum alloy tubing and connectors

must be coated to protect against external corrosion

when in contact with masonry, plaster or insulation

or are subject to repeated wettings by liquids (water

- not rain water, detergents or sewage)

DRIP LEG

MANUAL

SHUT-OFF

VALVE

GROUND JOINT UNION

(INSTALLED AHEAD OF GAS VALVE)

GROMMET



The unit gas supply entrance is factory sealed with

plugs. Keep plugs in place until gas supply is ready to be

installed. Once ready, replace the plugs with the supplied

grommets and install gas supply line.











































There will be air in the gas supply line after testing for leaks

on a new installation. Therefore, the air must be bled from

the line by loosening the ground joint union until pure gas is

expelled. Tighten union and wait for ve minutes until all gas

has been dissipated in the air. Be certain there is no open

ame in the vicinity during air bleeding procedure. The unit is

placed in operation by closing the main electrical disconnect

switch for the unit.



 For Natural gas to LP gas conversion,

Conversion Kit “LPM-08” must be used. Consult your dealer

for appropriate conversion kit(s).

All propane gas equipment must conform to the safety stan-

dards of the National Board of Fire Underwriters (See NBFU

Manual 58).

For satisfactory operation, propane gas supply pressure

must be within 9.7 - 10.3 inches W.C. at the manifold with all

gas appliances in operation. Maintaining proper gas pres-

sure depends on three main factors:

1. Vaporization rate, which depends on (a) temperature

of the liquid, and (b) wetted surface area of the

container or containers.

2. Proper pressure regulation.

3. Pressure drop in lines between regulators, and

between second stage regulator and the appliance.

Pipe size required will depend on length of pipe run

and total load of all appliances.



Complete information regarding tank sizing for vaporization,

recommended regulator settings and pipe sizing is available

from most regulator manufacturers and propane gas suppliers.

Since propane gas will quickly dissolve white lead or most

standard commercial compounds, special pipe dope must

be used. Shellac base compounds resistant to the actions

of liqueed petroleum gases such as Gasolac®, Stalactic®,

Clyde’s®or John Crane®are satisfactory.

See Typical Propane Gas Piping gure for typical piping

arrangement.







 













Sizing Between First and Second Stage Regulator

Maximum Propane Capacities listed are based on 1 PSIG Pressure Drop at 10

PSIG Setting. Capacities in 1,000 BTU/HR

      

30 309 700 1,303 2,205 3,394 1,843 3,854

40 265 599 1,115 1,887 2,904 1,577 3,298

50 235 531 988 1,672 2,574 1,398 2,923

60 213 481 896 1,515 2,332 1,267 2,649

70 196 446 824 1,394 2,146 1,165 2,437

80 182 412 767 1,297 1,996 1,084 2,267

90 171 386 719 1,217 1,873 1,017 2,127

100 161 365 679 1,149 1,769 961 2,009

150 130 293 546 923 1,421 772 1,613

200 111 251 467 790 1,216 660 1,381

250 90 222 414 700 1,078 585 1,224

300 89 201 378 634 976 530 1,109

350 82 185 345 584 898 488 1,020

400 76 172 321 543 836 454 949

To convert to Capacities at 15 PSIG Settings -- Multiply by 1.130

To convert to Capacities at 5 PSIG Settings -- Multiply by 0.879















Sizing Between Single or Second Stage Regulator and Appliance*

Maximum Propane Capacities Listed are Based on 1/2" W.C. Pressure Drop at

11" W.C. Setting. Capacities in 1,000 BTU/HR

     

   

10 49 110 206 348 539 291 608 1,146 2,353 3,525

20 34 76 141 239 368 200 418 788 1,617 2,423

30 27 61 114 192 296 161 336 632 1,299 1,946

40 23 52 97 164 253 137 284 541 1,111 1,665

50 20 46 86 146 224 122 255 480 985 1,476

60 19 42 78 132 203 110 231 436 892 1,337

80 16 36 67 113 174 94 198 372 764 1,144

100 14 32 59 100 154 84 175 330 677 1,014

125 12 28 52 89 137 74 155 292 600 899

150 11 26 48 80 124 67 141 265 544 815

200 10 22 41 69 106 58 120 227 465 697

250 919 36 61 94 51 107 201 412 618

300 818 33 55 85 46 97 182 374 560

350 716 30 51 78 43 89 167 344 515

400 715 28 47 73 40 83 156 320 479

*DATA IN ACCORDANCE WITH NFPA PAMPHLET NO. 54









































Mount the thermostat approximately ve feet above the

oor, in an area that has an inside, vibration-free wall and

has good air circulation.

Movement of air must not be obstructed by furniture, door,

draperies, etc. The thermostat must not be mounted where

it will be a󰀨ected by drafts, hot or cold water pipes or air

ducts in walls, radiant heat from replace, lamps, the sun,

television, etc. Consult the Instruction Sheet packaged with

thermostat for mounting instructions.

All units have two stages of heating and two stages of me-

chanical cooling. Units which will have economizers may

use thermostats with two or three stages of cooling. All units

can use single stage or multi-stage thermostats. Refer to

gures later in this section for wiring.









The units are designed for operation on 60 hertz current and

at voltages as shown on the rating plate. All internal wiring

in the unit is complete. It is necessary to bring in the power

supply to the contactor as shown on the unit wiring diagram

which is supplied with each unit. The low voltage wiring must

be connected between the unit control panel and the room

thermostat.

R C W1W2 GY1 Y2

RY2

CY1

W1 G

Integrated

Control Module

Thermostat

Two-Stage Heating

with

Two-Stage Cooling





5 MINUTE DELAY

PERIOD WITH

JUMPER IN THIS

POSITION

10 MINUTE DELAY

PERIOD WITH

JUMPER IN THIS

POSITION







To use a single stage thermostat, move jumper located to the

left of the terminal strip labeled “Stage Delay” from NONE to

“5” or “10” minutes. This selection will cause the control to

run on low stage for the selected time (5 or 10 minutes) then

shift to HIGH STAGE. This option controls both cooling and

heating modes. If the jumper is not moved, only low-stage

cool and low-stage heat will operate.



The APG16 models are equipped with ECM variable speed

motors. Two FAN ONLY speeds are possible with these mo-

tors. To utilize the LOW HEAT blower speed for FAN ONLY

operation, connect the wire from the thermostat’s G terminal

to the ignition control board’s G terminal.

To utilize the alternate FAN ONLY speed, connect the wire

from the thermostat’s G terminal to the unstripped green

wire in the control box. (DO NOT connect the thermostat’s

G terminal to the ignition control’s G terminal.) This alternate

FAN ONLY blower speed is approximately 75% of the HIGH

COOL speed.















The optional usage of a dehumidistat allows the unit’s cir-

culator blower to operate at a slightly lower speed (approx-

imately 80% of desired cooling speed) during a combined

thermostat call for cooling and dehumidistat call for dehu-

midication. This can be done through an independent de-

humidistat. This lower blower speed enhances dehumidi-

cation of the conditioned air as it passes through the air

conditioning coil. For proper function, a dehumidistat applied

to this package unit must operate on 24 VAC and utilize a

switch which opens on humidity rise. Refer to the unit wiring

diagram for additional wiring details.

To install/connect a dehumidistat:

1. Turn OFF power to unit.

2. To enable the dehumidify function, locate the ECM

blower motor interface module in the unit’s blower

section. Locate the jumper label “HUM” on the interface

module. Cut the jumper to enable dehumidication

(see ECM Blower Motor Interface Module).

3. Secure the dehumidistat neutral wire (typically the

white lead) to the gray, unstripped wire in the unit’s

control box.

4. Secure the dehumidistat low voltage wire (typically

the black lead) to the ignition control’s “R” terminal.

5. Secure the dehumidistat ground wire (typically the

green lead) to the ground screw to the unit’s sheet

metal control box.

: Ground wire may not be present on all

dehumidistats.

6. Turn ON power to unit.

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