Friedrich RC 11 User Manual

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INSTALLATION, OPERATION AND MAINTENANCE MANUAL

DUAL MOTOR PACKAGED TERMINAL

AIR CONDITIONERS

RC 11, 12 & 21

RC/RH 10, 20, 35, 45, 80, 90

RC/RH10

RC11

RC12

RC/RH20

RC21

RC/RH35

RC/RH80

Enviromaster International LLC

 

5780 Success Dr.

An ISO 9001-2000Certified Company

Rome, NY 13440

 

www.retroaire.com

P/N# 240004146, Rev. 1.7 [02/07]

 

DUAL MOTOR PACKAGED TERMINAL AIR CONDITIONERS

INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

P/N# 240004146, Rev. 1.7 [02/07]

Shipping Damage MUST be Reported to the Carrier IMMEDIATELY!!!

Examine the exterior. Remove cover and examine compressor and piping for signs of damage.

This manual is intended as an aid to qualified service personnel for proper installation, operation, and mainte-

nance of the RetroAire Dual Motor Packaged TerminalAir Conditioner (PTAC). Read these instructions thoroughly and carefully before attempting installation or operation. Failure to follow these instructions may result in improper installation, operation, service or maintenance, possibly resulting in fire, electrical shock, property damage, personal injury, or death.

TO THE INSTALLER

(1)Retain this manual and warranty for future reference.

(2)Before leaving the premises, review this manual to be sure the unit has been installed correctly and run the unit for one complete cycle to make sure it functions properly.

To obtain technical service or warranty assistance during or after the installation of this unit, contact your local representative. Visit our website www.retroaire.com for a local representative listing. For further assistance call1-800-228-9364.

When calling for assistance, please have the following information ready:

Model Number___________________________

Serial Number____________________________

Date of Installation________________________

SAFETY INSTRUCTIONS

Read all instructions before using the RetroAire PTAC. Install or locate this unit only in accordance with these instructions. Use this unit only for its intended use as described in this manual.

Check the rating plate on the RetroAire PTAC before installation to make certain the voltage shown is the same as the electric supply to the unit.

The RetroAire PTAC must be connected only to a properly grounded electrical supply. Do not fail to properly ground this unit.

Turn off the electrical supply before servicing the RetroAire PTAC.

Do not use the RetroAire PTAC if it has damaged wiring, is not working properly, or has been damaged or dropped.

[Save These Instructions]

!

Recognize this symbol as an indication

!

of important safety information

The Right Fit For Comfort

2

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TABLE OF CONTENTS

 

Warnings and Precautions.....................................

2-3

The Dual Motor PTAC Family ...................................

4

Controls and Components........................................

4

Preparation for Installation .......................................

5

Electrical Wiring .......................................................

5

Installation Instruction for:

 

RC/RH10 Replacement PTAC .............................

6

RC11 Replacement PTAC....................................

7

RC12 Replacement PTAC ...................................

8

RC/RH20 Replacement PTAC ........................

9-10

RC21 Replacement PTAC .............................

11-12

RC/RH35 Replacement PTAC ............................

13

RC/RH45 Replacement PTAC .......................

14-15

RC/RH80 Replacement PTAC .......................

16-17

RC/RH90 Replacement PTAC .......................

18-19

Final Inspection and Start-Up..............................

20

Sequence of Operation.......................................

20-23

Cleaning and Maintenance .....................................

24

Troubleshooting .......................................................

24

Specifications...........................................................

25

Warranty ..................................................................

26

INSTALLER RESPONSIBILITIES

This manual has been prepared to acquaint you with the installation, operation and maintenance of RetroAire Dual Motor PTACs and to provide important safety information in these areas.

We urge you to read all of these instructions thoroughly before attempting the installation or operation of your unit. This manual should be kept for future reference.

The manufacturer of this unit will not be liable for any damages caused by failure to comply with the installation and operating instructions outlined in this manual.

A rating plate identifying your RetroAire Dual Motor PTAC can be found on the unit. When referring to your unit, always have the information listed on the rating plate readily available.

MODIFICATION AND TAMPERING

!DANGER !

Tampering with the RetroAire Dual Motor PTAC is dangerous and may result in serious injury or death. Tampering voids all warranties. Do not attempt to

modify or change this unit in any way.

IMPORTANT SAFETY FEATURE

Power Cord With Integral Safety Protection

All PTACs rated 250V or less that are cord connected to the power supply are equipped with a power cord with integral safety protection as standard. Providing personal shock protection as well as arcing and fire prevention, the device is designed to sense any damage in the line cord and disconnect power before a fire can occur. Tested in accordance with Underwriters Laboratories, the cord set also offers a unique “passive” operation, meaning the unit does not require resetting if main power is interrupted.

WARNING -ADAMAGEDPOWER SUPPLY CORD MUST BE REPLACED WITH A NEW CORD FROM THE MANUFACTURER, AND NOT REPAIRED.

Each power cord should be checked before every use. Follow the instructions in the order listed on the device.

WARNING - DO NOT USE THE PRODUCT IF THE UNIT FAILS THE TEST.

!DANGER !

Do not use the RetroAire Dual Motor PTAC with any electrical supply voltage other than the one listed on the rating plate.

!WARNING !

Completely read all instructions prior to assembling, installing, operating, or repairing this product. Inspect all parts for damage prior to installation and start-up.

!CAUTION !

PTAC Chasses are heavy. To avoid injury, use assistance when lifting.

Note: Unit uses R22 refrigerant.

The Right Fit For Comfort

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THE DUAL MOTOR PTAC FAMILY

The RetroAire Dual Motor PTAC is available as a coolingonly model or, for those who wish to up-gradeto a heat pump, the RH10, 20, 35, 45, 80, and 90 heat pump chassis will fit the existing wall sleeve. The heat pump version will reduce energy costs during periods of outdoor temperature ranging down to as low as 40° F.

The Dual Motor PTAC uses a high-efficiencyrotary com-pressorprotectedundera5-yearwarrantyandanenhancedhigh-efficiencyheat exchanger to make the replacement of worn out and inefficient units a very attractive option.

The RetroAire Dual Motor PTAC offers two fan speeds

– three in the RC12 – and has an optional motorized fresh airfeaturewithapositivepressureseal,overrideswitch,and positive condensate re-evaporationto improve efficiency.

Whisper quiet operation improves the room ambience and the 20 gauge galvanized steel construction of the chassis ensures long service life.

The RetroAire Dual Motor Packaged Terminal Air Conditioner family consists of:

RC/RH10: Astraight cool/heat pump replacement for

theAmericanAirFilter 16Series,AmericanStandard

45, Carteret 45, Remington Type 45, McQuay 45,

Singer 45, and Nelson Aire 16.

RC11: A straight coolonly replacement for the Westinghouse RB Series.

RC12: A straight coolonly replacement for the Lennox PTEIA Series.

RC/RH20: A straight cool/heat pump replacement for the Climate Master (Friedrich) 702 & 703, Cool Heat RM Series, TPIRa-Matic,Weather Twin, and ZoneAire S, SC & RM.

RC21: A straight coolonly replacement for the Climate Master 701.

RC/RH35:Astraight cool/heat pump replacement for

the Singer/Remington/McQuay EA, ES & RS.

RC/RH45: A straight cool/heat pump replacement for the American Standard Type 40.

RC/RH80:Astraight cool/heat pump replacement for FeddersCMEO“Unizone,” andMueller/Worthington “Climatrol.”

RC/RH90:Astraight cool/heat pump replacement for

Cool Heat AD & 700 and Friedrich Climate Master

AD & 700.

The RetroAire Dual Motor PTAC is available in nominal sizes of 9,000 Btuh, 12,000 Btuh, 15,000 Btuh, and 18,000 Btuh.* With energy efficiency ratings as high as 10, the replacement of worn out and inefficient units is a very attractive option.

* The RC12 PTAC, however, is only available in nominal sizes of 12,000 Btuh and 15,000 Btuh.

All Retroaire products are backed by Enviromaster International LLC and are rated in accordance withARI Standards 310 and 380 and UL Standard 484.

PRE-INSTALLATION

Test run the Dual Motor PTAC prior to installation. Connect the line cord to a proper power supply (such as the one the old unit is plugged into) and check all controls for proper operation. Disconnect the chassis before installing.

Review baffle and foam tape installation to ensure proper air seal and unit operation.

CONTROLS AND COMPONENTS

Standard Unit Features

1.Unit mounted operating controls

Thermostat

Fan speed control

Heat/cool switch

Fan cycle switch

2.Low ambient protection

3.Foam strip seal for supply air duct

4.Weather strip insulation

5.Baffle kit bag

6.Condenser baffles to accommodate extended wall sleeve applications (consult factory)

7.Sea coast coated drainpan

8.Normally/open normally/closed motor valve-switch,(hydronic heat only)

Optional Controls and Accessories

1.Remote thermostat

2.Motorized fresh air damper

3.Electric/hydronic heat

4.Disconnect switch

5.Sea coast coated coils

6.Wall sleeves, louvers, and cabinets (consult factory)

The Right Fit For Comfort

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!WARNING !

Moving parts can cause personal injury. Exercise all due caution when test running the chassis.

!WARNING !

The correct condenser air baffles must be properly installed or performance will be impaired and/or the warrantywill be voided!!

PREPARATION FOR INSTALLATION

IMPORTANT: RetroAire Dual Motor PTACs are to be used with metal wallsleeves. The sleeves must employ front panels secured by screws that prevent contact with all parts with minor dimensions of openings not exceeding 1/2”.The final assembly must employ an indoor air discharge grill having dimensions not less than 26” x 4”, separating the top surface of the chassis from the top surface of the discharge grill by a minimum of 1”. For all models, the outdoor openingsmustpreventcontactofallmovingpartsbymeans of louvers or grills with minor dimension not exceeding 1”. All cord connected 265 Volt units must be plugged into receptacles within the unit subbase or chassis.

1.Remove the front of the existing room enclosure. This will expose the old chassis.

2.Disconnect the power supply. If a line cord and plug were used, remove it from the receptacle. If the chassis is hard wired, locate the circuit breaker, place it in the “OFF” position, and tag it, announcing work is being done. DO NOT TURN ON.

3.Loosen any tie down bolts or screws and remove the old chassis.

IMPORTANT: Dispose of old chassis per present state and federal regulations.

4.Inspect the wall sleeve/cabinet for rust, holes, and damage.Cleanthewallsleeveofanydirt,repairanydamage, and ensure proper drainage of condensate or rainwater to exterior of building.

5.Remove or repair old weather seals and note location for installation of any new seals.

6.Check the wall sleeve/cabinet to assure all drain holes are open and that (A) the unit is level left to right and (B) the back is pitched to the outside by 1/2” maximum.

7.Check the present voltage to verify the new chassis is a matching voltage and that the line cord and receptacle match.

8.Before installing the new chassis, inspect the outdoor louver for a minimum free area of 70% and remove any obstructions. Any variation will restrict air flow over the condenser coil and cause serious damage to the chassis. It will also void the warranty.

The Right Fit For Comfort

See individual unit installation instructions for more information.

ELECTRICAL WIRING

All wiring should be in accordance with the National Electric Code (NEC) and the local building codes.

! WARNING!

To avoid possible injury or death due to electrical shock, open the power supply disconnect switch and secure it in an open position during installation. On a plug and receptacle connection, keep the unit unplugged until installation is complete.

1.Inspect the existing wiring for any deficiencies such as cut or frayed wires. Replace such wiring if found.

2.Check the unit rating plate for circuit ampacity and breaker or fuse size. Use only HACR type breakers. Select the proper wire for the ampacity rating.

3.If plug and receptacle are used, check the compatibility. The chassis can be hard wired or direct connected as well.

4.Each unit must have a separate branch ciruit protected by a fuse or breaker. Refer to the unit rating plate for the proper wire and breaker or fuse size. Use of extension cords is prohibited.

!DANGER !

The RetroAire Dual Motor PTAC must:

Be connected to a properly grounded electrical supply with the proper voltage as stated on the rating plate.

Use the proper maximum over current protection device stated on the rating plate.

The use of extension cords is prohibited.

Failure to follow these instructions can result in a fire, explosion or electrical shock causing property damage, personal injury or death.

5

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Figure D1
Wall Sleeve
Front View
Cooling Chassis 1 x1 Foam Tape

INSTALLATION INSTRUCTIONS

RC/RH10 REPLACEMENT PTAC

Install 1/2” x 1/2” Foam Tape

OFF

BLOCK

EVAP

RC/RH10 BAFFLE INSTALLATION KIT

• 1

Installation Manual

• 1/2” x 1/2” Open Cell Foam Tape

• 1 Top Baffl e

 

• 1” x 1” Open Cell Foam Tape

• 2

Sets of Lt.&Rt. Baffl es

• 2” x 1 1/2” Open Cell Foam Tape

• Screws

HYDRONIC

• 1ea. 2-PositionConnector & Pin Mate

 

 

ONLY

• 14AWG Yellow Wire

1.Take unit out of packaging.

2.Slideunitintowallsleeve.Ifsupplyductoncoolingchassisdoes not line up with supply vent on room cabinet it is possible that factory installed angle brackets on the top and sides will have to be reversed. This will allow approximately 1” in or out of the wall sleeve (see figures A & B) below.

Figure A1

Figure B1

Two sets of baffl es are provided in your kit to accommodate mounting brackets in either position A or B.

3.Slide unit out of wallsleeve.

4.Baffl e Installation - Remove baffl es from kit bag supplied with unit. Install left and right side baffl es on the condenser coil in existing holes:

Choose the proper fi tting baffl es for your application.

Baffl es must come in contact with the outdoor louver.

Make sure baffles are directed inward toward the center of coil.

Secure baffl es tightly to the condenser coil using the screws provided.

(Figures A1,B1 & C1).

IMPORTANT: The correctcondenser air baffl es must be installed or performances may be impaired and/or the warranty will be voided.

The Right Fit For Comfort

Figure C1

Baffl es Directed Inward

Toward Coil

 

 

 

 

2” X 1 1/2” Supply Air

Duct Foam Tape

5.Apply one piece of 1/2” x 1/2” open cell polyfoam to top fl ange of evaporator block off (See illustration at left).

6.Apply 2” x 1 1/2” open cell foam strips around supply air duct to ensure that all the conditioned air is delivered into the room. Failure to do so results in recirculation of the conditioned air around the wall sleeve and through the unit causing the unit to short cycle and coils to freez, thus raising operating costs through improper heating and cooling

(Figure C1).

7.1” x 1” Open cell foam strips are provided to prevent outside air from entering around the chassis to the room from the sides and top of the cabinet. Install between wall sleeve and cooling chassis. It is imperative to have a solid air seal between wall

sleeve and chassis. Failure to do so will result in air leakage from outdoor to

indoor causing system problems i.e.coilsfreezing, shortcycling,and constant running of unit. If installer is in need of more foam than

supplied in kit, consult factory

(Figure D1).

8.Once confi dent that all seals are the correct size and in the proper location, and the correct baffl es are attached to the condenser coil in the proper orientation, slide unit into fi nal position and tighten any tie down bolts or screws as necessary.

Hydronic Only: Remove the 2-position connector assembly from kit bag supplied with unit (this will have 2 yellow wires attached). Connect this 2-position connector to the 2-position connection located on the bottom of the control box panel.

To Connect Aquastat:

A.Remove the black jumper wire located on the bottom panel of the control box (this is also terminated with a 2-positionconnector).

B.Cut the jumper wire in the middle and splice the aquastat to the jumper.

C.Place the connecter back into original location. Refer to wire diagram on the unit for details.

9.Connect line cord.

10. See Final Inspection and Startup on page 20.

RC/RH 10 PERFORMANCE DATA*

Unit Size

Cooling Btuh

EERs

Heat Pump Btuh

COP

Fresh Air CFM

9

9,500

10.0

8,500

2.8

40/35

12

11,900

10.0

11,400

2.9

40/35

15

14,700

9.2

13,800

2.8

40/35

18

16,900

9.1

N/A

N/A

40/35

 

*Refer to the charts on page 23 for electrical and

 

optional electric heat specifi cations.

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Figure B2

INSTALLATION INSTRUCTIONS

RC11 REPLACEMENT PTAC

Removable

Weather Seals

 

 

 

 

 

34

1/2

 

 

 

 

 

 

 

 

 

 

39

3/4

 

 

 

 

 

 

 

 

 

14

 

 

 

 

 

 

 

1/8

 

 

 

 

 

 

Air Filter

 

 

 

 

 

 

 

 

30

1/4

 

 

 

 

 

 

 

 

 

 

 

Install 1/2” x 1/2” Foam Tape

11

1/4

 

 

 

 

 

 

18

7/8

RC11 BAFFLE INSTALLATION KIT

• 1

Installation Manual

• 1/2” x 1/2” Open Cell Foam Tape

• 1 Top Baffl e

 

• 1” x 1” Open Cell Foam Tape

• 2

Sets of Lt.&Rt. Baffl es

• 2” x 1 1/2” Open Cell Foam Tape

• Screws

HYDRONIC

• 1 ea. 2-PositionConnector & Pin Mate

 

 

ONLY

• 14AWG Yellow Wire

Two sets of baffl es are provided in your kit to accommodate varying wall sleeve depth.

1.Take unit out of packaging.

2.Slide unit into wall sleeve. The supply duct on the cooling chassis should line up with the supply vent on the room cabinet. The weather angles should require no adjustment.

3.Slide unit out of wallsleeve.

IMPORTANT: The correct condenser air baffl es must beinstalled or performances may be impaired and/or the warranty will be voided.

4.Baffl e Installation - Remove baffl es from kit bag supplied with unit. Install left and right side baffl es on the condenser coil in existing holes:

Choose the proper fi tting baffl es for your applica-

tion.

Baffles must come in contact with the outdoor louver.

Make sure baffles are directed inward toward the center of coil.

Secure baffl es tightly to the condenser coil using the screws provided.

Figure A2

 

Baffl es-DirectedInward

 

Toward Coil

 

 

 

 

 

 

 

 

2” X 1 1/2” Supply Air

Duct Foam Tape

5.Apply one piece of 1/2” x 1/2” open cell polyfoam to top

ange of evaporator block off (See illustration: top of

this page).

6.Apply 2” x 1 1/2” open cell foam strips around supply air duct to ensure that all the conditioned air is delivered into the room. Failure to do so results in recirculation of the conditioned air around the wall sleeve and through the unit causing the unit to short cycle, thus raising operating costs through improper heating and cooling

(Figure A2).

7. 1” x 1” Open cell foam strips are provided to preventoutside air from entering around the chassis to the room from the sides and top

Wall Sleeve

Front View

Cooling Chassis

1 x1 Foam Tape

of the cabinet. Install between wall sleeve and cooling chassis. It is imperative to have a solid air seal between wall sleeve and chassis. Failure to do so will result in air leakage from outdoor to indoor causing system problems i.e. Coils freezing, short cycling, and constant running of unit. If installer is in need of more foam than supplied in kit, consult factory (Figure B2).

8.Once confi dent that all seals are the correct size and in the proper location, and the correct baffl es are attached to the condenser coil in the proper orientation, slide unit into final position and tighten any tie down bolts or screws as necessary.

Hydronic Only: Remove the2-positionconnector assembly from kit bag supplied with unit (this will have 2 yellow wires attached). Connect this2-positionconnector to the2-positionconnection located on the bottom of the control box panel.

To Connect Aquastat:

A.Remove the black jumper wire located on the bottom panel of the control box (this is also terminated with a 2-positionconnector).

B.Cut the jumper wire in the middle and splice the aquastat to the jumper.

C.Place the connecter back into original location. Refer to wire diagram on the unit for details.

9.Connect line cord.

10. See Final Inspection and Startup on page 20.

 

 

 

 

 

 

 

 

RC11 PERFORMANCE DATA*

 

UNIT SIZE

 

COOLING BTUH

EER

FRESH AIR CFM

 

 

 

 

 

 

 

9

 

9500

10

40/35

 

 

 

 

 

 

 

12

 

11,900

10

40/35

 

 

 

 

 

 

 

15

 

14,700

9.2

40/35

 

18

 

16,900

9.1

40/35

*Refer to the charts on page 23 for electrical and optional electric heat specifi cations.

The Right Fit For Comfort

7

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INSTALLATION INSTRUCTIONS

RC12 REPLACEMENT PTAC

 

RC12 INSTALLATION KIT

• 1 Installation Manual

HYDRONIC

• 1ea. 2-PositionConnector & Pin Mate

ONLY

• 14AWG Black Wire

1.Take unit out of packaging.

2.Slide unit into wall sleeve. The supply duct on the cooling chassis should line up with the supply vent on the room cabinet. The weather angles should require no adjustment.

3.Make sure baffles come in contact with the outdoor louver.

IMPORTANT: Baffles and open cellfoam tape seals are factory installed on the RC12 . Baffles fill the gap between the rear of the chassis and the outdoor louver and prevent the air from recirculating. Consult the factory if baffles supplied are not deep enough to accommodate wall sleeve application as system efficiency and reliability are dependent on proper air flow. (Figure A3)

Figure A3

Baffles-DirectedInward

Toward Coil

1” X 1 ”

Open Cell

Foam Tape

1” X 1/2” Supply Air

Duct Foam Tape

IMPORTANT: If adjoining room conditioning is required, the RC12 is able to discharge to the right and left by utilizing thefour-inchknockouts (Figure B3) on either side of the evaporator compartment using 4” flex duct.

3.Once confident that all seals are the correct size and in the proper location and the correct baffles are attached to the condenser coil and in the proper orientation, slide unit into final position and tighten any tie down bolts or screws as necessary.

 

Figure B3

1” x 1” Open Cell

Left and Right

Foam Tape

Condenser Baffles

1” X 1/2”

5/8” Ref.

Open Cell

 

Foam Tape

 

Air Intake

 

Removeable Filter

4” Knockout

Hydronic Only: Remove the2-positionconnector assembly from kit bag supplied with unit (this will have 2 yellow wires attached). Connect this2-positionconnector to the2-positionconnection located on the bottom of the control box panel.

To Connect Aquastat:

A.Remove the black jumper wire located on the bottom panel of the control box (this is also terminated with a 2-positionconnector).

B.Cut the jumper wire in the middle and splice the aquastat to the jumper.

C.Place the connecter back into original location. Refer to wire diagram on the unit for details.

4.Connect line cord.

5.See Final Inspection and Startup on page 20.

RC12 PERFORMANCE DATA*

UNIT

COOLING

EER

EVAP CFM

FRESH

SIZE

BTUH

 

HIGH/LOW

AIR CFM

12

12,200

10

390/340

40/35

15

15,500

9

440/390

40/35

*Refer to the charts on page 23 for electrical and optional electric heat specifications.

The Right Fit For Comfort

8

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INSTALLATION INSTRUCTIONS

RC/RH20 REPLACEMENT PTAC

ADJUSTABLE WEATHER SEAL ANGLE POSITIONS

A

8 5/8”

7 7/8”

9 11/16”(1)

8” (2)

B

9 1/2”

10 1/4”

8 7/16”(1)

10 1/8” (2)

NOTE: Dimensions calculated without foam gaskets

(1)Standard position-Factoryinstalled

(2)Position for Climate Master 702 and 703.

REMOVEABLE

WEATHER SEAL

ANGLES

 

5 1/2”

 

 

35 15/16”

4”

 

3”

 

 

 

22” CONDENSER COIL

 

 

 

2”

8 1/2”

 

8 1/4”

 

 

26” AIR OUTLETS

14 13/16”

A

AIR INTAKE FILTER

18 1/8”

B

 

RC/RH20 BAFFLE INSTALLATION KIT

• 1

Installation Manual

• Screws

• 1

Lt. & Rt. Baffles (size 1)

• 1” x 1” Open Cell Foam Tape

• 1

Lt. & Rt. Baffles (size 2)

• 1/2” x 1/2” Open Cell Foam Tape

Two sets of baffles are provided in your kit to accommodate mounting brackets in either position A or B.

Figure A4

Figure B4

4.Baffle Installation - Remove baffles from kit bag supplied with unit. Install left and right side baffles on the condenser coil in existing holes:

Choose the proper fitting baffles for your application.

Baffles must come in contact with the outdoor louver.

Make sure baffles are directed inward toward the center of coil.

Secure baffles tightly to the condenser coil using the screws provided. (Figures A4,B4 & C4 )

Figure C4

Baffles-DirectedInward

Toward Coil

HYDRONIC

• 1ea. 2-PositionConnector & Pin Mate

 

ONLY

• 14AWG Black Wire

 

 

 

1.Take unit out of packaging.

2.Slide unit into wall sleeve. If supply duct on cooling chassis does not line up with supply vent on room cabinet it is possible that factory instlled angle brackets on the top and sides will have to be reversed. This will allow approximately 1” in or out of the wall sleeve (See

figures A4 & B4).

3.Slide unit out of wallsleeve.

IMPORTANT: The correct condenser air baffles must beinstalled or performances may be impaired and/or the warranty will be voided.

 

 

 

 

1/2” X 1/2” Supply Air

Duct Foam Tape

5.Apply 1/2” x 1/2” open cell foam strips around supply air duct to ensure that all the conditioned air is delivered into the room. Failure to do so results in recirculation of the conditioned air around the wall sleeve and through the unit causing the unit to short cycle, thus raising operating costs through improper heating and cooling

(Figure C4).

The Right Fit For Comfort

9

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RC/RH20 INSTALLATION INSTRUCTIONS (Continued)

6.1” x 1” Open cell foam strips are provided to prevent outside air from entering around the chassis to the room from the sides and top of the cabinet. Install between wall sleeve and cooling chassis. It is imperative to have a solid air seal between wall sleeve and chassis. Failure to do so will result in air leakage from outdoor to indoor causing system problems i.e. coils freezing, short cycling, and constant running of unit. If installer is in need of more foam than supplied in kit, consult factory.

Figure D4

Wall Sleeve

Front View

Cooling Chassis

1 x1 Foam Tape

Hydronic Only: Remove the2-positionconnector assembly from kit bag supplied with unit (this will have 2 yellow wires attached). Connect this2-positionconnector to the2-positionconnection located on the bottom of the control box panel.

To Connect Aquastat:

A.Remove the black jumper wire located on the bottom panel of the control box (this is also terminated with a 2-positionconnector).

B.Cut the jumper wire in the middle and splice the aquastat to the jumper.

C.Place the connecter back into original location. Refer to wire diagram on the unit for details.

8.Connect line cord.

9.See Final Inspection and Startup on page 20.

7.Once confi dent that all seals are the correct size and in the proper location and the correct baffl es are attached to the condenser coil in the proper orientation, slide unit into fi nal position and tighten any tie down bolts or screws as necessary.

RC/RH 20 PERFORMANCE DATA*

Unit

Cooling

EERs

Heat Pump

COP

Fresh Air

Size

Btuh

 

Btuh

 

CFM

 

 

 

 

 

 

9

9,500

10

8500

2.8

40/35

12

11,900

10

11400

2.9

40/35

15

14,700

9.2

13800

2.8

40/35

18

16,900

9.1

N/A

N/A

40/35

RC/RH20 Hydronic Heat *

Performance 104-101(Single Row Coil)

GPM

EWT (°F)

Capacities Btuh

P.D.

 

180°F Hi

16,400

4.4

3.0

180°F Lo

15,400

4.4

140°F Hi

10,300

4.6

 

 

140°F Lo

9,700

4.6

*Refer to the charts on page 23 for electrical and optional electric heat specifications.

The Right Fit For Comfort

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INSTALLATION INSTRUCTIONS

RC21 REPLACEMENT PTAC

DIMENSIONS

MODEL

A

B

C

9-12

20 14”

9 7/8”

10 3/8”

15-18

25 1/4”

10 1/8”

15 3/8”

A - OVERALL CHASSIS DEPTH

B - CONDENSER SECTION DEPTH

C - EVAPORATOR SECTION DEPTH

NOTE: Dimensions “A” and “B” are with condenser recirculation baffles and without weather seal gasket.

Condenser recirculation baffles for standard 10” wall box (provided)

RC21 BAFFLE INSTALLATION KIT

2.Slide unit out of wallsleeve.

3.Remove baffles from kit bag supplied with unit.

IMPORTANT: The correct condenser air baffles must beinstalled or performances may be impaired and/or the warranty will be voided.

4.Baffle Installation - Install left and right side baffles on the condenser coil in existing holes:

Choose the proper fitting baffles for your application.

Baffles must come in contact with the outdoor louver.

Make sure baffles are directed inward toward the center of coil.

Secure baffles tightly to the condenser coil using the screws provided. (Figures A5, B5 & C5 )

Figure C5

Baffles-DirectedInward

Toward Coil

• 1

Installation Manual

• Screws

• 1

Lt. & Rt. Baffles (size 1)

• 1” x 1” Open Cell Foam Tape

• 1

Lt. & Rt. Baffles (size 2)

• 1/2” x 1/2” Open Cell Foam Tape

HYDRONIC

• 1ea. 2-PositionConnector & Pin Mate

 

ONLY

• 14AWG Black Wire

1.Take unit out of packaging.

2.Slide unit into wall sleeve. If supply duct on cooling chassis does not line up with supply vent on room cabinet it is possible that factory instlled angle brackets on the top and sides will have to be reversed. This will allow approximately 1” in or out of the wall sleeve (See

Figures A5 & B5).

Figure A5

Figure B5

 

 

 

 

1/2” X 1 1/2” Supply Air

Duct Foam Tape

5.Apply 1/2” x 1/2” open cell foam strips around supply air duct to ensure that all the conditioned air is delivered into the room. Failure to do so results in recirculation of the conditioned air around the wall sleeve and through the unit causing the unit to short cycle, thus raising operating costs through improper heating and cooling

(Figure C5).

Two sets of baffles are provided in your kit to accommodate mounting brackets in either position A or B.

The Right Fit For Comfort

11

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RC21 INSTALLATION INSTRUCTIONS (Continued)

Figure D5

Wall Sleeve

Front View

Cooling Chassis

1 x1 Foam Tape

6.1” x 1” Open cell foam strips are provided to prevent outside air from entering around the chassis to the room from the sides and top of the cabinet. Install between wall sleeve and cooling chassis. It is imperative to have a solid air seal between wall sleeve and chassis. Failure to do so will result in air leakage from outdoor to indoor causing system problems i.e. coils freezing, short cycling, and constant running of unit. If installer is in need of more foam than supplied in kit, consult factory (See Figure D5).

7.Once confi dent that all seals are the correct size and in the proper location and the correct baffl es are attached to the condenser coil in the proper orientation, slide unit into fi nal position and tighten any tie down bolts or screws as necessary.

Hydronic Only: Remove the2-positionconnector assembly from kit bag supplied with unit (this will have 2 yellow wires attached). Connect this2-positionconnector to the2-positionconnection located on the bottom of the control box panel.

To Connect Aquastat:

A.Remove the black jumper wire located on the bottom panel of the control box (this is also terminated with a 2-positionconnector).

B.Cut the jumper wire in the middle and splice the aquastat to the jumper.

C.Place the connecter back into original location. Refer to wire diagram on the unit for details.

8.Connect line cord.

9.See Final Inspection and Startup on page 20.

RC21 PERFORMANCE DATA*

Unit Size

Cooling

EERs

Fresh Air

 

Btuh

 

CFM

9

9,500

10

40/35

12

11,900

10

40/35

15

14,700

9.2

40/35

18

16,900

9.1

40/35

RC21 Hydronic Heat *

Performance 104-101(Single Row Coil)

GPM

EWT (°F)

Capacities Btuh

P.D.

 

180°F Hi

16,400

4.4

3.0

180°F Lo

15,400

4.4

140°F Hi

10,300

4.6

 

 

140°F Lo

9,700

4.6

*Refer to the charts on page 23 for electrical and optional electric heat specifi cations.

The Right Fit For Comfort

12

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INSTALLATION INSTRUCTIONS

RC/RH35 REPLACEMENT PTAC

RC/RH35 INSTALLATION KIT

• 1

Installation Manual

• Screws

• 1

Lt. & Rt. Baffles

• 1” x 1” Open Cell Foam Tape

HYDRONIC

• 1ea. 2-PositionConnector & Pin Mate

 

ONLY

• 14AWG Black Wire

1.Take unit out of packaging.

2.Slide unit into wall-sleeve.The supply duct on the cooling chassis should line up with the supply vent on the room cabinet.

3.Slide unit out of wall-sleeve

IMPORTANT: The correct condenser air baffles mustbe installed or performances may be impaired and/or the warranty will be voided.

4.Baffle Installation - Remove baffles from kit bag supplied with unit. Install left and right side baffles on the condenser coil in existing holes:

Baffles must come in contact with the outdoor louver.

Make sure baffles are directed inward toward the center of coil.

Secure baffles tightly to the condenser coil using the screws provided. (Figure A6)

Figure A6

Baffles-DirectedInward

Toward Coil

 

 

 

 

1” X 1” Supply Air

Duct Foam Tape

5. Apply 1” x 1” open cell foam strips around supply air duct to ensure that all the conditioned air is delivered into the room. Failure to do so results in recirculation of the conditioned air around the wall sleeve and through the unit causing the unit to short cycle, thus raising operating costs through improper heating and cooling

(Figure A6).

6.Once confident that all seals are the correct size and in the proper location and the correct baffles are attached to the condenser coil and in the proper orientation, slide unit into final position and tighten any tie down bolts or screws as necessary.

Hydronic Only: Remove the 2-position connector assembly from kit bag supplied with unit (this will have 2 yellow wires attached). Connect this 2-position connector to the 2-position connection located on the bottom of the control box panel.

To Connect Aquastat:

A.Remove the black jumper wire located on the bottom panel of the control box (this is also terminated with a 2-positionconnector).

B.Cut the jumper wire in the middle and splice the aquastat to the jumper.

C.Place the connecter back into original location. Refer to wire diagram on the unit for details.

7.Connect line cord.

8.See Final Inspection and Startup on page 20.

IMPORTANT: The RC/RH35 is equipped with a bracket that allows the unit to be adjusted up and down in the chassis of unleveled wall sleeves. Adjust leveler leg (Shown below Figure B6) to desired height and tighten down using bolts supplied on bracket.

Figure B6

RC/RH35 PERFORMANCE DATA*

MODEL

COOLING

EER

HEAT PUMP

COP

FRESH AIR

 

Btuh

 

Btuh

 

CFM

9

9,500

10

8,500

2.8

40/35

12

11,900

10

11,400

2.9

40/35

15

14,700

9.2

13,800

2.8

40/35

18

16,900

9.1

N/A

N/A

40/35

*Refer to the charts on page 23 for electrical and optional electric heat specifications.

The Right Fit For Comfort

13

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INSTALLATION INSTRUCTIONS

RC/RH45 REPLACEMENT PTAC

34.50” 18.63”

16.50”

14.07”

5.50”

RC/RH45 INSTALLATION KIT

• 1

Installation Manual

• Screws

• 1

Lt. & Rt. Baffles (size 1)

• 1” x 1” Open Cell Foam Tape

• 1

Lt. & Rt. Baffles (size 2)

• 1/2” x 1/2” Open Cell Foam Tape

HYDRONIC

• 1ea. 2-PositionConnector & Pin Mate

 

ONLY

• 14AWG Black Wire

3.Slide unit out of wallsleeve and install baffles on the condenser side.

4.Remove baffles from kit bag supplied with unit.

IMPORTANT: The correct condenser air baffles must beinstalled or performances may be impaired and/or the warranty will be voided.

5.Baffle Installation - Install left and right side baffles on the condenser coil in existing holes:

Choose the proper fitting baffles for your application.

Baffles must come in contact with the outdoor louver.

Make sure baffles are directed inward toward the center of coil.

Secure baffles tightly to the condenser coil using the screws provided. (Figures A7, B7 & C7 )

Figure C7

Baffles-DirectedInward

Toward Coil

1.Take unit out of packaging.

2.Slide unit into wall sleeve. If supply duct on cooling chassis does not line up with supply vent on room cabinet it is possible that factory installed angle brackets on the top and sides will have to be reversed. This will allow approximately 1” in or out of the wall sleeve. ( S e e

Figures A7 & B7)

Figure A7

Figure B7

 

 

 

 

1/2” X 1/2” Supply Air

Duct Foam Tape

6.Apply 1/2” x 1/2” open cell foam strips around supply air duct to ensure that all the conditioned air is delivered into the room. Failure to do so results in recirculation of the conditioned air around the wall sleeve and through the unit causing the unit to short cycle, thus raising operating costs through improper heating and cooling. (Figure C7)

Two sets of baffles are provided in your kit to accommodate mounting brackets in either position A or B.

The Right Fit For Comfort

14

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RC/RH45 INSTALLATION INSTRUCTIONS (Continued)

7.1” x 1” Open cell foam strips are provided to prevent outside air from entering around the chassis to the room from the sides and top of the cabinet (Figure D7). Install between wall sleeve and cooling chassis. It is imperative to have a solid air seal between wall sleeve and chassis. Failure to do so will result in air leakage from outdoor to indoor causing system problems i.e. coils freezing, short cycling, and constant running of unit. If installer is in need of more foam than supplied in kit, consult factory.

Figure D7

Wall Sleeve

Front View

Cooling Chassis

1 x1 Foam Tape

8.Once confi dent that all seals are the correct size and in the proper location and the correct baffl es are attached to the condenser coil in the proper orientation, slide unit into fi nal position and tighten any tie down bolts or screws as necessary.

Hydronic Only: Remove the2-positionconnector assembly from kit bag supplied with unit (this will have 2 yellow wires attached). Connect this2-positionconnector to the2-positionconnection located on the bottom of the control box panel.

To Connect Aquastat:

A.Remove the black jumper wire located on the bottompanelofthecontrolbox(thisisalsoterminated with a 2-positionconnector).

B.Cut the jumper wire in the middle and splice the Aquastat to the jumper.

C.Place the connecter back into original location. Refer to wire diagram on the unit for details.

8.Connect line cord.

9.See Final Inspection and Startup on page 20.

RC/RH45 PERFORMANCE DATA*

Unit Size

Cooling

EERs

Heat Pump

COP

Fresh Air

 

Btuh

 

Btuh

 

CFM

9

9,500

10

8500

2.8

40/35

12

11,900

10

11400

2.9

40/35

15

14,700

9.2

13800

2.8

40/35

18

16,900

9.1

N/A

N/A

40/35

*Refer to the charts on page 23 for electrical and optional electric heat specifi cations.

The Right Fit For Comfort

15

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INSTALLATION INSTRUCTIONS

RC/RH80 REPLACEMENT PTAC

Air Filter

8”x30” Permanent

Aluminum Mesh

RC/RH80 BAFFLE INSTALLATION KIT

• 1

Installation Manual

• Screws

• 1

Lt.Baffl e

 

• 1” x 1” Open Cell Foam Tape

• 1

Rt.Baffl e

 

• 1/2” x 1/2” Open Cell Foam Tape

HYDRONIC

• 1ea. 2-PositionConnector & Pin Mate

 

ONLY

• 14AWG Yellow Wire

1.Take unit out of packaging.

2.Slide unit into wall sleeve. The supply duct on the cooling chassis should line up with the supply vent on the room cabinet. The weather angles should require no adjustment.

3.Slide unit out of wallsleeve.

IIMPORTANT: The correct condenser air baffl es must be installed or performances may be impaired and/or the warranty will be voided.

4.Baffl e Installation - Remove baffl es from kit bag supplied with unit. Install left and right side baffl es on the condenser coil in existing holes:

Baffl es must come in contact with the outdoor louver.

Make sure baffl es are directed inward toward the center of coil.

Secure baffl es tightly to the condenser coil using the screws provided. (Figure A8)

Figure A8

Baffl es-DirectedInward

Toward Coil

 

 

 

 

1/2” X 1/2” Supply Air

Duct Foam Tape

3.Take 1/2” x 1/2” open cell foam strips from kit bag and apply to sheet metal fl anges around the perimeter of the discharge outlet as shown in (Figure A8). Failure to do so results in recirculation of the conditioned air around the wall sleeve and through the unit causing the unit to short cycle, thus raising operating costs through improper heating and cooling.

Figure B8

Wall Sleeve

Front View

Cooling Chassis

1 x1 Foam Tape

5.1” x 1” Open cell foam strips are provided to prevent outside air from entering around the chassis to the room from the sides and top of the cabinet (Figure B8). Install between wall sleeve and cooling chassis. It is imperative to have a solid air seal between wall sleeve and chassis. Failure to do so will result in air leakage from outdoor to indoor causing system problems i.e. coils freezing, short cycling, and constant running of unit. If installer is in need of more foam than supplied in kit, consult factory.

The Right Fit For Comfort

16

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RC/RH80 INSTALLATION INSTRUCTIONS (Continued)

6.Once confident that all seals are the correct size and in the proper location and the correct baffles are attached to the condenser coil and in the proper orientation, slide unit into final position and tighten any tie down bolts or screws as necessary.

Hydronic Only: Remove the2-positionconnector assembly from kit bag supplied with unit (this will have 2 yellow wires attached). Connect this2-positionconnector to the2-positionconnection located on the bottom of the control box panel.

To Connect Aquastat:

A.Remove the black jumper wire located on the bottompanelofthecontrolbox(thisisalsoterminated with a 2-positionconnector).

B.Cut the jumper wire in the middle and splice the Aquastat to the jumper.

C.Place the connecter back into original location. Refer to wire diagram on the unit for details.

7.Connect line cord.

8.See Final Inspection and Startup on page 20.

RC/RH80 Performance Date*

UNIT

COOLING

EER

HEAT PUMP

COP

FRESH

SIZE

BTUH

BTUH

AIR CFM

 

 

 

 

 

 

9

9,500

10

8500

2.8

40/35

12

11,900

10

11400

2.9

40/35

15

14,700

9.2

13800

2.8

40/35

18

16,900

9.1

N/A

N/A

40/35

*Refer to the charts on page 23 for electrical and optional electric heat specifications.

The Right Fit For Comfort

17

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INSTALLATION INSTRUCTIONS

RC/RH90 REPLACEMENT PTAC

Install Duct Collar here

NOTE: CONTROL BOX IS

A SEPARATE PART THAT

IS ELECTRICALLY CON-

NECTED TO THE CHASSIS

ON-SITE.

RC/RH90 BAFFLE INSTALLATION KIT

3.Baffl e Installation - Remove baffl es from kit bag supplied with unit. Install left and right side baffl es on the condenser coil in existing holes:

Baffl es must come in contact with the outdoor louver

Make sure baffl es are directed inward toward the center of coil

Secure baffl es tightly to the condenser coil using the screws provided (Figure A9)

Figure A9

Baffl es-DirectedInward

Toward Coil

• 1

Installation Manual

• Screws

• 1

Lt. & Rt. Baffl es

• 1/4” x 3/4” Open Cell Foam Tape

• 1

Duct Collar

• 1” x 1” Open Cell Foam Tape

• 1

Slide-Duct

 

• 1/2” x 1/2” Open Cell Foam Tape

HYDRONIC

• 1ea. 2-PositionConnector & Pin Mate

 

ONLY

• 14AWG Yellow Wire

IMPORTANT: The RC/RH90 chassis is 18 1/4” deep for the 9,000, 12,000, and 15,000 Btuh models. The standard depth for the 18,000 Btuh is 24”. However, EMI can supply it for an 18 1/4” chassis on demand.

1. Remove unit from box and install duct collar.

Duct Collar and Slide-DuctInstallation

Remove duct collar and slide-ductfrom packaging.

Fasten 1/4” x 1/2” foam tape to the bottom fl anges of the duct collar, this serves as a gasket between the collar and the unit.

Securely fasten duct collar over discharge opening with screws provided.

Insert slide-ductinto duct collar. (See illustration above)

2.Slide unit into wall sleeve. The supply duct on the cooling chassis should line up with the supply vent on the room cabinet. The weather angles should require no adjustment.

IMPORTANT: The correct condenser air baffl es must be installed or performances may be impaired and/or the warranty will be voided.

 

 

 

 

1/2” X 1/2” Supply Air

Duct Foam Tape

4.Remove 1/2” x 1/2” open cell foam strips from kit bag and apply to sheet metal fl anges around the perimeter of the supply air duct outlet as shown in Figure A9. Failure to do so results in recirculation of the conditioned air around the wall sleeve and through the unit causing the unit to short cycle, thus raising operating costs through improper heating and cooling.

Figure B9

Wall Sleeve

Front View

Cooling Chassis

1 x1 Foam Tape

5.1” x 1” Open cell foam strips are provided to prevent outside air from entering around the chassis to the room from the sides and top of the cabinet (Figure B9). Install between wall sleeve and cooling chassis. It is imperative to have a solid air seal between wall sleeve and chassis. Failure to do so will result in air leakage from outdoor to indoor causing system problems i.e. coils freezing, short cycling, and constant running of unit. If installer is in need of more foam than supplied in kit, consult factory.

The Right Fit For Comfort

18

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RC/RH90 INSTALLATION INSTRUCTIONS (Continued)

6.Once confident that all seals are the correct size and in the proper location and the correct baffles are attached to the condenser coil and in the proper orientation, slide unit into final position and tighten any tie down bolts or screws as necessary.

Hydronic Only: Remove the2-positionconnector assembly from kit bag supplied with unit (this will have 2 yellow wires attached). Connect this2-positionconnector to the2-positionconnection located on the bottom of the control box panel.

To Connect Aquastat:

A.Remove the black jumper wire located on the bottom panel of the control box (this is also terminated with a 2-positionconnector).

B.Cut the jumper wire in the middle and splice the aquastat to the jumper.

C.Place the connecter back into original location. Refer to wire diagram on the unit for details.

RC 90 CONTROL BOX OPTIONS

Select one of the following which properly matches the control box of your unit.

7.Install the control section:

In a standard unit mount installation, take the thermal bulb from the control section and run the line along the unit to the blower section.There will be no thermostat bulb if a remote thermostat option is used.

While looking at the sides of the blower housing, there are two clips that will support the thermal bulb. Take out the screws that hold these clips and slide the thermal bulb into the clips.

Fastentheclipsbackintoplace,makingsureyoudonot kink the bulb as you might break the thermostat end.

After the thermostat is back in place, reinstall the front cover of the unit and finish the installation.

8.Connect line cord.

9.See Final Inspection and Startup page 20.

RC/RH90 FINAL INSPECTION

AND START-UP

(All other units see “Final Inspecton and Startup” page 20)

1.Mount control box in wall sleeve (in the same location as the old control box)

2.Make sure the chassis is level. Check by pouring water into the drain pan and making certain it flows through the drain hoses to the condenser side of the unit.

3.Hard wire line voltage to control box and plug cooling chassis line cord into control box receptacle and Molex plugs.

IMPORTANT: Follow the information provided on the rating plate for voltage and amperage/fuse size for proper supply.

4.Attach the front panel to the existing cabinet enclosure.

5.Turn the power on.

6.Check for proper operation (i.e., cooling, optional fresh air, and heating if supplied).

7.Check to be sure nothing will interfere with the room discharge air or the return air to the units (i.e., curtains or drapes that obstruct the air flow or plush carpeting that can obstruct the return air. Items like these can cause serious damage to the chassis and can void the warranty.

8.See Sequence of Operation pages 2022.

RC/RH 90 Performance Date*

UNIT

COOLING

EER

HEAT PUMP

COP

FRESH

SIZE

BTUH

BTUH

AIR CFM

 

 

 

 

 

 

9

9,500

10

8500

2.8

40/35

12

11,900

10

11400

2.9

40/35

15

14,700

9.2

13800

2.8

40/35

18

16,900

9.1

N/A

N/A

40/35

*Refer to the charts on page 23 for electrical and optional electric heat specifications.

The Right Fit For Comfort

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FINAL INSPECTION AND STARTUP

! CAUTION!

When the unit is first powered up, high humidity conditions can cause condensation to form on the discharge grill. Keep doors and windows closed to reduce humidity and condensation will evaporate.

1.Make sure the chassis is level. Check by pouring water into the drain pan and making certain it flows through the drain hoses to the condenser side of the unit.

2.Plug or hard wire line voltage to unit.

IMPORTANT: Follow the information provided on the rating plate for voltage and amperage/fuse size for proper supply.

3.Attach the front panel to the existing cabinet enclosure.

4.Turn the power on.

5.Check for proper operation (i.e., cooling, optional fresh air, and heating if supplied).

6.Check to be sure nothing will interfere with the room

discharge air or the return air to the units (i.e., curtains or drapes that obstruct the air flow or plush carpeting that can obstruct the return air (see below)). Items like these can cause serious damage to the chassis and can void the warranty.

The position of curtains or drapes over supply air grille may cause air to recirculate without cooling the room. The unit will short cycle and may cause premature compressor failure.

NOTE: Any obstruction of supply air including the use of deflector baffles, may cause condensate to form on the louver or cabinet.

To ensure optimum performance of your PTAC, avoid restricting the air flow.

SEQUENCE OF OPERATION

NOTE: RetroAire units can be equipped withUnit

Mounted or Remote Controlled Thermostats.

UNIT MOUNTED THERMOSTAT

OPERATIONAL INSTRUCTIONS

Turning the unit mounted thermostat knob to the far left will produce the warmest room temperature while turning it all the way to the right will produce the coolest. These

settings can be adjusted for personal comfort.

RC12 SAFETYNOTE: When turning the selector switch on the RC12 for mode of operation, it is very important to make sure the switch position isSEATED” directly on a mode of operation(clicks into position).Do not mistakenly place between two positions. This can result in a potential fan failure while the system is in a cooling or heating operation. A fan failure could result in the unit overheating (smoke) in

an electric heating mode, or freezing coil in a cooling mode.

COOLING CYCLE:

1.Place system switch in the “COOL” position.

2.Rotate thermostat knob (below) clockwise until the compressor fans start running and cold air begins to flow from the unit. For a colder room temperature, continue turning the thermostat knobclockwise and let the unit continue operating to cool the room and remove humidity. If a warmer room temperature is desired, rotate the thermostat knobcounter-clockwiseuntil the compressor

cycles off.

The Right Fit For Comfort

20

Typical Representation Of A Unit Mount Control

SYSTEM

SWITCH

FAN SPEED SWITCH

THERMOSTAT KNOB

! CAUTION!

Avoid rotating the thermostat knob back and forth from heating to cooling. This causes the compressor to cycle on and off rapidly and WILL cause damage to the compressor. Allow the compressor to remain off for at least three minutes prior to restarting the unit.

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Reset Button
*Note:
Button will pop out when limit switch opens.
Push in to reset.

SEQUENCE OF OPERATION (Continued)

UNIT MOUNTED THERMOSTAT OPERATIONAL INSTRUCTIONS (Continued)

IMPORTANT: The room temperature must be above 65º F for the compressor to operate.

3.Place system switch in the “OFF” position. All operation should stop.

HEATING CYCLE - Electric:

1.Place system switch in the “HEAT” position.

2.Rotate thermostat knob counter-clockwiseuntil the indoor fans start running and the electric coil starts emitting heat. The condenser fans do not run during the heating cycle unless the chassis is a heat pump. After the unit starts running and the area gets warmer, turn the thermostat knob clockwise until a slight click is heard and the electric heater turns off. If a warmer room temperature is desired, continue turning the knobcounter-clockwiseand let the unit continue operating. If a cooler room temperature is desired, rotate the thermostat knob clockwise until the electric heater cycles off.

IMPORTANT: Room temperature must be below 85º F to energize the heater.

3.Place system switch in the “OFF” position. All operation should stop.

Manual Reset Limit Switch

(5 Kw heat models only) In the event the limit switch opens and de-energizes the electric heat, the limit switch will need to be manually reset.

• To reset switch remove the control box cover.

Locate the limit switch.

Push in the reset button on

the face of the switch. (Refer to illustration above)

HYDRONIC COIL: The coil with the old unit can be located in the subbase, under the chassis in a special attachment, or above the chassis in a special attachment. It is necessary to know where the coil is to be located and the physical size of the coil so the right coil can be supplied if ordered for replacement. The coil is shipped loose for field installation. It should be installed in the same manner as the coil it is replacing.Whenthehydroniccoilisnotreplaced,installation of the chassis should follow the instructions in this manual.

HEATING CYCLE - Hydronic: All straight cool Dual Motor PTACs are equipped with a field supplied hydronic heat option. The unit is provided with atwo-positionmolex plug for motor valve connection. To wire this option, take the molex plug connector with (2) yellow wires from the kit and plug it into the molex on the unit. Then wire the opposite end of the molex to the motorized valve in the hydronic circuit.

IMPORTANT: Make sure the motor valve is rated for the correct voltage. Most RetroAire units with unit mount

controls will power a normally closed valve that is the same voltage as the unit (ex: a unit rated 208/230V will power a 208/230V normally closed valve). Be sure to check the wiring diagram (located on the unit) and voltage application for the specific unit. Other valve configurations and voltage options are available. Consult Technical Service if the unit voltage does not match your valve application.

A.Place system switch in the “HEAT” position.

B.Turn thermostat knob counter-clockwise.Motorized valve shouldopenandallowhotwatertorunthroughthecoil.The indoor fans will run, blowing air through the hydronic coil.

C.Check room comfort level as outlined under “Heating Cycle - Electric.”

MOTORIZED FRESH AIR DAMPER (Optional):The optional motorized fresh air damper allows the operator to move fresh air into the space to be conditioned. This is done by placing the damper door switch in the “YES” position, opening the damper door and allowing fresh air to be moved into the space. To stop the flow of fresh air, simply place the switch in the “NO” position.

CHANGEOVERT-STATS(HeatPumpOnly):Onunitswitha changeoverthermostat,thecompressorcanruntoanoutdoor temperature of 40° F and then shut off. Electric heat will then energize and assume the heating demand until the temperature of the outdoor air rises to approximately 50° F.

FAN CYCLE SWITCH: This option allows the operator of the Dual Motor PTAC to have the evaporator fan cycle or run continuously.Withtheswitchinthecyclingpositiontheevaporator fanwillonlyrunwhentheunitiscallingforheatorcooling.When the switch is in the “CONSTANT” position, the evaporator fan will run continuously unless the unit is physically turned off.

CONDENSATE REMOVAL: The Dual Motor PTAC has a drain connection at each end of the condensate drain pan. This allows the condensate to drain through the bulkhead to the area near the condenser fan. The condenser fan has a slinger ring that picks up the condensate and slings it on the hot condenser coil where it evaporates. On heat pump models condensate can form on the outdoor coil during the heat pump cycle. A temperature sensitive valve in the base pan will allow condensate to flow to an internal piping system or external drain kit (supplied by others).

AQUASTAT CONNECTION (Optional):All straight cool Dual Motor PTACs are supplied with a standard high volt aquastat connection. The connection is located on the bottom or side with a black jumper wire installed in molex. To wire option take jumper wire and cut in half. Then connect 2 field supplied wires to the cut ends of jumper and wire to aquastat (see wiring diagram for more information). If option is not being used simply leave jumper wire connected to unit.

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SEQUENCE OF OPERATION (CONTINUED)

REMOTE THERMOSTAT OPERATIONAL INSTRUCTIONS

CHOOSING A THERMOSTAT: EMI offers a thermostat that is compatible with your PTAC/PTHP unit. Select EMI part number240-2960from the latest Retroaire price list for this option. This is a single stage, cool/heat, mercury bulb thermostat that can be used in all Retroaire cooling, heating or heat pump applications. The thermostat has an adjustableset-pointrange of between 55°F and 95°F. There are two independent,adjustablestopsthatcanlimitthe heating or cooling range of the thermostat. If anon-mercury,electronicthermostatisneeded,thenchooseEMIpartnumber240-3926.

SELECTING A THERMOSTAT “By Others”:When selecting a thermostat other than those offered by EMI, it is important to choose a single stage heat/cool, 24V thermostat. For models 09-17, do NOT select a thermostat that requires connection to a “C” terminal since these units do not have provisions for connecting to a “C” terminal. Only models 19 and 24 have provisions for connecting a “C” terminal to the unit.

If a thermostat without a “C” terminal is used in a models 19 or24,thenitisimportanttoinsulatetheunusedBROWN“C” low volt wire to prevent it from shorting at the thermostat.

COOLING ONLYWITH ELECTRIC HEAT OR HYDRONIC HEAT (RCPTAC’s):Selectathermostatthatiscompatible with a cooling - electric heat system.The thermostat should have “R”, “Y”, “W” and “G” terminals

HEAT PUMP WITH ELECTRIC HEAT (RH - PTHP’S):

Select a thermostat that is compatible with a cooling - single stageheat-heatpumpsystem.Thethermostatshouldhave“R”, “Y”, “O” and “G” terminals. Retroaire units are single stage heating only. The electric heat and heat pump will not operate simultaneously.

FAN OPERATION: Some thermostats are equipped with an auto/on fan switch. When this switch is placed in the on position the indoor fan will run continuous. When the switch is in the auto position the indoor fan will cycle with the call for heating or cooling.

FAN PURGE (Optional): After the room thermostat has been satisfied, the purge feature allows the indoor fan to remain on for an additional 60 seconds. This increases efficiency by pulling the remaining energy from the unit.

COOLING OPERATION: After connecting the thermostat to the unit place the system switch in cool mode.Adjust theset-pointtemperature below the room temperature. The compressor and fan motors will start and cooling will begin.Placetheset-pointtemperatureabovetheroomtemperature.The compressor and condenser fan will stop and the indoor fan will remain on for an additional sixty seconds.

NOTE: The start of the compressor will not take place until theanti-short/randomstart time period has elapsed.

ELECTRIC HEAT OPERATION: Place the thermostat system switch in heat mode. Adjust the set-point temperature above the room temperature. The electric heat will energize along with the indoor fan motor. Heating will continue so long as the set-point remains above room temperature. Next place the set-point temperature below room temperature.The Electric heater will switch off and the indoor fan will remain on for an additional sixty seconds.

HYDRONIC HEAT OPERATION (Optional):An optional hydronic heat package may be selected in lieu of electric heat. Heating operation is essentially the same as that of units with electric heat. With the thermostat system switch set to heat and the set-point temperature above room temperature, the hydronic valve will open allowing water to flow through the coil. The indoor fan will also switch on and warm air will flow from the unit. Heating will continue so long as the set-point remains above room temperature. Place the set-point temperature below room temperature. The hydronic valve will close and indoor fan will switch off after the sixty-second purge time has elapsed.The hydronic valve is a 24Vac normally open valve. Should power be lost to the unit, the valve will default to the open position.

HEAT PUMP (Cooling Mode): Cooling operation in a heat pump unit is described in “Cooling operation” above. The unit is equipped with a reversing valve that is energized for cooling andde-energizedin heating mode.

HEATPUMP(HeatingMode):Heatpumpunitsare“Limited Range” equipped withback-upelectric resistance heat. Limited Range heat pumps are designed to operate when outdoor temperatures are between 75°F and 40°F and with a maximum indoor temperature of 80°F. When the outdoor temperature falls below approximately 40°F the unit will switch from heat pump to electric resistance heat. Electric heat will then remain as the heat source until the outdoor temperatures rise above 50°F. Retroaire heat pumps (RH

– PTHP) are single-stageheating units. The electric heat and heat pump willNOT operate simultaneously.

Tooperatetheunitinheatingmode,itmustfirstbeconnected to an appropriate heat pump thermostat. (See choosing a thermostat). Select heat on the thermostat system switch. Then, adjust the set-pointtemperature above the room temperature. The compressor and fan motors will start and heating will begin. If the outdoor temperature is below approximately 40°F the heat pump system will not operate. Electric heat will then take over the heating demand. Heating will continue so long as theset-pointtemperature remains above the room temperature. Place theset-point

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SEQUENCE OF OPERATION (CONTINUED)

temperature below the room temperature. The heating mode will cease and the indoor fan will remain on for an additional sixty seconds.

NOTE: The start of the compressor will not take place until theanti-short/randomstart time period has elapsed.

HEAT PUMP (Emergency Heat)

!WARNING !

Beforeaccessingthecontrolcompartment,disconnect power to the unit. Failure to do so could result in serious injury or electrical shock.

Should the heat pump system fail, it is possible to force the control board into electric heat mode. This is a temporary solution until the heat pump system can be repaired. Locate the circuit board in the control section of the unit. Locate the terminals where the outdoor sensor connects to the circuit board. Using a small needle nose type pliers, disconnect one side of the sensor from the circuit board. This will appear to the circuit board as an outdoor coil freeze condition there-byenergizing the electric resistance heater on the call for heat.

HEAT PUMP(Thermostatic Drain Pan Valve): Heat pump units are equipped with a thermostatic drain valve that will open when outdoor temperatures fall below 50°F. This keeps the base pan free of condensate water where it may otherwise freeze during colder outdoor temperatures. As partofitsnormaloperation,theunitwillproducecondensate and collect it in the base pan of the unit. There it will be picked up by the condenser fan slinger ring and deposited onto the condenser coil. During the cooling season, this improves the unit’s efficiency by maintaining adequate refrigeration system pressures.

ANTI-SHORTCYCLE TIMERRandom Start Feature:

This feature will prevent compressor short cycling and also prevent multiple units in a single facility from simultaneously starting following a power outage. This delay on break feature ensures that the compressor remains off, between cycles, until the three-minutetime delay period has elapsed allowing system pressures to equalize beforere-starting.

condition be detected, the compressor and condenser fan will be switched off for a minimum of three minutes and until the freeze condition is satisfied. During this time the indoor fan will continue to run to aid in the defrost process.

AJ4004 CONTROL BOARD: There are two sets of jumper pins on the control board that are factory set so there should no need to set them later on in the field. The first is a set of three pins labeled “HP” for selection of either a “Straight Cool” or “Heat Pump” unit. For “Straight Cool” the center pin and outer most pin (usually on the top) are to be jumped together. For Heat Pump units the center pin and the pin closest to the relay are to be jumped together (see

Firure #1).

The secondisa setoftwo pinslabeled “TEST”.Whenthese two pins are jumped together, all timers are eliminated (i.e. anti-short,purge, ect.). This is mainly used for production line testing however it may also be useful forfield-testingas well. The units are shipped with the “TEST” jumper on only one of the pins. Please, do not leave a unit with the test jumper in the test mode (seeFirure #2).

Figure #1

STRAIGHT COOL/HEAT PUMP JUMER

HP HP

HEAT PUMP STRAIGHT COOL

Figure #2

TEST JUMPER POSITION

FOR NORMAL OPERATION

The random start feature, initiated after a power failure, will add a random time delay (between 5-120seconds) to thethree-minuteanti short cycle time following a power outage. This will stagger the starting of multiple units in a single facility allowing a building to slowly go back on line when power is restored.

INDOOR COIL FREEZE PROTECTION: This feature will prevent the indoor coil from freeze up in the cooling mode. Indoor coil freeze up can occur due to a dirty air filter, low refrigerant charge or low room or outdoor temperatures. Thisinturncancausecompressordamage.Shouldafreeze

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23

The LED Blink codes are as listed in below.

1 Blink Normal Operation

2 Blinks Compressor Lockout (ASCT)

3 Blinks Outdoor freeze condition

4 Blinks Indoor freeze condition

5 Blinks Simultaneous W & Y Call

Important sensor resistances are as follows. 77 °F - 10K ohms

50 °F - 19.9K ohms

35 °F - 30K ohms

30 °F - 34.4K ohms

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CLEANING AND MAINTENANCE

CLEANING THE INTERIOR OF THE UNIT

!DANGER !

Before servicing the RetroAire Dual Motor PTAC, be sure to turn off electrical power to the unit. Failure to dosocanresultinafire,explosionorelectricalshock causing property damage, personal injury or death.

1.Disconnect power from unit.

2.Remove access panels and do a visual inspection of the unit, making sure to check for obvious problems such as damaged coils or evidence of extended wear on any moving part.

3.Check for unusual odors, oil leaks, or stains on or around the coil and refrigerant lines. The presence of oil here may indicate a potentially serious problem such as a refrigerant leak.

4.Inspect all electrical connections. Look for frayed wires and poor connections. Terminal ends that are loose will eventually fail, causing a loss of performance or worse.

5.Check fan motors and blower assemblies. Some units may require a drop of light oil to motors and/or bearing assemblies (look for oil cups). Check setscrews and motor mounting hardware, making sure they are tight.

6.Brush and/or vacuum the centrifugal fan blades and blower cage assemblies. These parts must be clean to operate efficiently.

7.Inspect and clean the indoor and outdoor coils, using a fin comb, if necessary, to straighten any damaged fins. these coils must be clean for proper operation.

IMPORTANT: Do not use asolvent-basedcleaner on the indoor or outdoor coils. Some solvents can produce a noxious odor when starting the fan or electric heat.

8.Inspect and clean the drain pan and drainline (if any). Use of an anti-fungicidetablet is recommended to keep the condensate system free from bacterial contaminants.

11.Replace panels and reconnect electrical power.

12.Test unit operation.

CLEANING THE EXTERIOR

1.Clean the air filter at least once a month by removing it from the unit and washing or vacuuming any dust from its surface. Allowing dust to collect on the filter will cause the PTAC to lose efficiency and eventually malfunction.

2.When cleaning the filter, be sure to vacuum any dust from the return air grille surface as well.

3.Clean exterior of the cabinet as desired with a mild soap or household cleaner.

IMPORTANT: If a new air filter is needed for your RetroAire Dual Motor PTAC, consult factory for availability and/or proper sizing.

TROUBLESHOOTING

NO HEAT OR COOLING: Check to see if the unit has power and if the thermostat is satisfied. If the thermostat isnot satisfied, refer to the wiring diagram and check control components for continuity.

Check The Manual Reset Limit Switch

(5 Kw heat models only)

In the event the limit switch opens and de-energizesthe electric heat, the limit switch will need to be manually reset.

To reset switch remove the control box cover.

Locate the limit switch.

Reset Button

*Note:

Button will pop out when limit switch opens.

Push in to reset.

• Push in the reset button

on the face of the switch. (Refer to illustration above)

9.Check weep holes along the rear flange of the base pan, making sure they are open.

10.Check the pitch of the unit. Over time the building and equipment may settle, causing a shift in the direction of the condensate flows. Ideally the unit should pitch a minimum of 5° (at least ½”) to the outside to allow for proper drainage.

!WARNING !

It is illegal to discharge refrigerant into the atmosphere. Use proper reclaiming methods and equipment when servicing a RetroAire Dual Motor PTAC.

The Right Fit For Comfort

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SPECIFICATIONS FOR THE RC/RH10/20/35/45/80/90 & RC11/12/21

Due to EMI’s ongoing development programs, design, specifications, and performance data may change without notice.

When installing the RC/RH10/20/35/45/80/90 or the RC11/12/21 refer to the charts below for electrical and optional electric heat specifications.

 

 

 

 

RC/RH10/20/35/45/80/90 & RC11/21 Electrical Specifications*

 

 

 

Model

Voltage/hz/ph

 

Evap Motor

Cond Motor

Compressor

 

Total

 

MCA

 

Max Fuse

 

Min

Line Cord

Number

 

FLA

Hp

FLA

Hp

RLA

LRA

 

Amps

 

 

 

Voltage

 

115/60/1

 

1.4

 

0.09

 

1.6

 

0.125

7.4

44

 

10.4

 

12.3

 

15

104

5-15P

9

208/230/60/1

 

0.6

 

0.08

 

0.72

 

0.125

4.1

20

 

 

5.4

 

6.4

 

15

197

6-15P

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

265/60/1

 

0.67

 

0.08

 

0.7

 

0.125

3.35

18

 

 

4.7

 

5.6

 

15

240

7-20P

 

115/60/1

 

1.4

 

0.09

 

1.6

 

0.125

9.7

54

 

12.7

 

15.1

 

20

104

5-20P

12

208/230/60/1

 

0.6

 

0.08

 

0.72

 

0.125

5.1

28

 

 

6.4

 

7.7

 

15

197

6-15P

 

265/60/1

 

0.67

 

0.08

 

0.7

 

0.125

4.25

26

 

 

5.6

 

6.7

 

15

240

7-20P

15

208/230/60/1

 

0.6

 

0.08

 

0.72

 

0.125

6.4

35

 

 

7.7

 

9.3

 

15

197

6-15P

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

265/60/1

 

0.67

 

0.08

 

0.7

 

0.125

5.4

32

 

 

6.8

 

8.1

 

15

240

7-20P

 

 

 

 

 

 

 

 

 

18

208/230/60/1

 

0.6

 

0.08

 

0.71

 

0.09

7.6

45

 

 

8.9

 

10.8

 

15

197

6-15P

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

265/60/1

 

0.67

 

0.08

 

0.71

 

0.09

6.3

32

 

 

7.7

 

9.3

 

15

240

7-20P

 

 

 

 

 

 

 

 

 

Note: 18,000 not available in heat pump application.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RC/RH10/20/35/45/80/90 & RC11/12/21 Optional Electric Heat Specifications*

 

 

 

 

 

Heater No.

Voltage

 

Watts

 

Btuh

Amps

Total Heat

 

MCA

 

Max

 

Line

 

 

 

 

 

 

 

Amps

 

 

 

Fuse

 

Cord

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

208

 

1636

 

5600

7.9

8.5

 

 

 

10.4

 

15

 

 

6-15P

 

 

 

 

 

2

 

 

230

 

2000

 

6900

8.7

9.3

 

 

 

11.5

 

15

 

 

6-15P

 

 

 

 

 

 

 

 

 

265

 

2655

 

9100

10.0

10.7

 

 

 

13.2

 

15

 

 

7-20P

 

 

 

 

 

 

 

 

 

208

 

2454

 

8400

11.8

12.4

 

 

 

15.3

 

20

 

 

6-20P

 

 

 

 

 

3

 

 

230

 

3000

 

10300

13.0

13.6

 

 

 

16.9

 

20

 

 

6-20P

 

 

 

 

 

 

 

 

 

265

 

3983

 

13600

15.0

15.7

 

 

 

19.5

 

20

 

 

7-20P

 

 

 

 

 

 

 

 

 

208

 

3271

 

11200

15.7

16.3

 

 

 

20.3

 

25

 

 

6-30P

 

 

 

 

 

4

 

 

230

 

4000

 

13700

17.4

18.0

 

 

 

22.3

 

25

 

 

6-30P

 

 

 

 

 

 

 

 

 

265

 

5310

 

18200

20.0

20.7

 

 

 

25.7

 

30

 

 

7-30P

 

 

 

 

 

5

 

 

208

 

4089

 

14000

19.7

20.3

 

 

 

25.2

 

30

 

 

6-30P

 

 

 

 

 

 

 

230

 

5000

 

17100

21.7

22.3

 

 

 

27.8

 

30

 

 

6-30P

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RC12 Electrical Specifications*

Model

Voltage/hz/ph

Evap Motor

Cond Motor

Compressor

Total

MCA

Max

Min

Line

Number

FLA

Hp

FLA

Hp

RLA

LRA

Amps

Fuse

Voltage

Cord

12

208/230/60/1

0.6

0.08

0.71

0.09

5.1

28

6.4

7.7

15

197

6-15P

265/60/1

0.67

0.08

0.71

0.09

4.25

26

5.6

6.7

15

240

7-20P

 

15

208/230/60/1

0.6

0.08

0.71

0.09

7.6

45

8.9

10.8

15

197

6-15P

265/60/1

0.67

0.08

0.71

0.09

6.3

32

7.7

9.3

15

240

7-20P

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NEMA Specifications Non-Locking/Receptacles

* Note: Data will vary if alternate components (including compressor or motor) are used to meet production needs. Consult factory for current electrical specifications.

The Right Fit For Comfort

25

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ALL PRODUCT LIMITED WARRANTY

Enviromaster International LLC (EMI) warrants to the purchaser/owner that EMI products will be free from defects in material and workmanship under the normal use and maintenance for a period of twelve months for all components and sixty months on unit compressors from the date of original installation, or fifteen months for all components and sixty-threemonths on unit compressors from the date of manufacture, whichever comes first.

WHAT WE WILL COVER

EMI will replace any defective part returned to EMI’s approved service organization with a new or rebuilt part at no charge. The replacement part assumes that unused portion of this warranty.

WHAT WE DON’T COVER

THIS WARRANTY DOES NOT INCLUDE LABOR or other costs incurred for repairing, removing, installing, shipping, servicing, or handling of either defective or replacement parts.

EMI IS NOT RESPONSIBLE FOR:

Normal maintenance

Damage or repairs required as a consequence of faulty installation or application by others.

Failure to start due to voltage conditions, blown fuses, open circuit breakers, or other damages due to the inadequacy or interruption of electrical service.

Damage or repairs needed as a consequence of any misapplication, abuse, improper servicing, unauthorized alteration, or improper operation.

Damage as a result of floods, winds, fires, lightening, accidents, corrosive atmosphere, or other conditions beyond the control of EMI.

Parts not supplied or designated by EMI.

Products installed outside the United States or Canada.

Any damages to person or property of whatever kind, direct or indirect, special or consequential, whether resulting from use or loss of use of the product.

LIMITATION OF WARRANTIES

This warranty is exclusive and in lieu of any implied warranties of merchantability and fitness for a particular purpose and all other warranties express or implied. The remedies provided for in this warranty are exclusive and shall constitute the only liabilities on the part of EMI including any statements made by any individual which shall be of no effect.

FOR SERVICE OR REPAIR:

(1)Contact the Installer

(2)Call the nearest Distributor

(3)Call or write:

ENVIROMASTER INTERNATIONAL LLC

5780 Success Dr., Rome, NY 13440

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26

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