Friedrich RC 21 User Manual

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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

19

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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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