Retroactive R10C, R20H, R35C, R35H, R45C Installation, Operation & Maintenance Manual

R10C/H R20C/H R35C/H

R45C/H

e Right Fit for Comfort

™

and R20C with Fedders

Unizone Option

Packaged Terminal Air Conditioner (PTAC)

Packaged Terminal Heat Pump (PTHP)

Installation, Operation,

& Maintenance Manual

ECR International Inc
2201 Dwyer Avenue
Utica, NY 13501
e-mail: [e-mail]

An ISO 9001-2008 Certied Company

P/N 240010328, Rev. A [10/15/2013]

TABLE OF CONTENTS

Receiving Information .................................................................................................... 3

Important Safety Information ......................................................................................... 4

Performance Data .......................................................................................................... 5

Dimensional/Physical Data .............................................................................................. 6

Product Description ....................................................................................................... 9

PTAC/PTHP Installation Preparation .................................................................................14

Installation Instructions — R10C | R10H ..........................................................................15

Installation Instructions — R20C| R20H ..........................................................................17

Installation Instructions — R20C With Fedders Uni-Zone Option ..........................................19

Installation Instructions — R35C| R35H ...........................................................................21

Installation Instructions — R45C | R45H ..........................................................................23

Sequence Of Operation .................................................................................................25

Inspection & Start-Up ...................................................................................................28

Maintenance ................................................................................................................34

Troubleshooting ...........................................................................................................36

Hydronic Heat Performance ............................................................................................37

Electrical Specications .................................................................................................38

Warranty .....................................................................................................................43

NOTICE

RetroAire™ replacement PTAC/PTHP is backed
by ECR International and is tested and rated in
accordance with: AHRI Standards 310/380 UL-484

Information and specications outlined in this manual in effect at the

time of printing of this manual. ECR International reserves the right to

discontinue, change specications or system design at any time without

The Right Fit for Comfort 2 P/N 240010328, Rev. A [10/15/2013]

notice and without incurring any obligation, whatsoever.

RECEIVING INFORMATION

Shipping damage MUST be reported to the carrier IMMEDIATELY.

Examine exterior.

Remove cover and examine compressor and piping for signs of damage.

Inspection

Check shipment against bill of lading.

Verify equipment received as ordered.

Verify unit:

• Unit size and type correct per submittal sheet and
job requirements?

• Voltage correct?

• Hydronic coil included, if required? Piping located
as required?

• Factory installed options installed?

• All eld installed options included?

Inspect each component for damage. Concealed damage
must be reported to carrier within 15 days of receipt of
shipment.

• Carrier must make proper notation on delivery receipt

of all damage identied and complete carrier inspection
report.

Purchaser must notify Manufacturer’s Service department
of all damage and is responsible for ling any necessary
claims with carrier.

General Information

Installation shall be completed by qualied agency.
this manual and warranty for future reference.

Installer review this manual to verify unit has been
installed correctly. Run unit for one complete cycle to
verify proper function.

To obtain technical service or warranty assistance
during or after installation, contact your local
representative.

Visit our web site www.retroaire.com for local
representative listing.

For further assistance call 1-800-325-5479.

When calling for assistance, please have following
information ready:

Model Number_________________________

Serial Number_________________________

Date of installation______________________

Retain

Customer Service : [phone]

P/N 2400103028, Rev. A [10/15/2013] 3 Made in USA

IMPORTANT SAFETY INFORMATION

All eld wiring shall conform to requirements of authority
having jurisdiction or in absence of such requirements:

• United States - National Electrical Code, ANSI/NFPA 70

• Canada - CSA C22.1 Canadian Electrical Code Part 1.

!

WARNING

Fire, explosion, and electrical shock hazard.
Improper installation could result in death or
serious injury. Read this manual and understand all
requirements before beginning installation.

Become Familiar With Symbols

Identifying Potential Hazards.

!

DANGER

Indicates a hazardous situation which, if not
avoided, WILL result in death or serious injury.

Safety Information

• Installation by qualied personnel.

• Turn off electrical supply before servicing unit.

• Inspect all parts for damage prior to installation and
start-up.

• Do not use unit if it has damaged wiring, is not
working properly, or has been damaged or dropped.

• Connect to properly grounded electrical supply with
proper voltage as stated on rating plate.

• Have proper over current protection (i.e. time- delay
fuse/HACR Breaker) as listed on Rating Plate.

• Connect unit to properly grounded electrical supply.
Do not fail to properly ground this unit.

• Tampering voids all warranties.

!

WARNING

Tampering with PTAC/PTHP is dangerous and could
result in serious injury or death. Do not modify or
change this unit.

!

WARNING

Indicates a hazardous situation which, if not
avoided, could result in death or serious injury.

!

CAUTION

Indicates a hazardous situation which, if not
avoided, could result in minor or moderate injury.

NOTICE

Indicates information which should be followed to
ensure proper installation and operation.

The Right Fit for Comfort 4 P/N 240010328, Rev. A [10/15/2013]

Table 1 Performance Data - Cooling

PERFORMANCE DATA

Models

R10C R20C

R35C

R45C

R_ _C 09

R_ _C 12

R_ _C 15

R_ _C 18 D 208/230 15600 (4.6) 7.7 0.67

Voltage

A 115 9000 (2.7) 9.0
D 208/230
E 267/277 440 (207.7
A 115 11900 (3.5)

D 208/230
E 267/277

D 208/230

E 267/277 450 (212.4)

Cooling

Capacity

Btuh (kW) CFM (L/S) CFM (L/s) dBa lbs (Kg)

9400 (2.8) 8.9

11700 (3.4)

14400 (4.2) 7.8 0.69

Table 2 Performance Data - Heating

Models

R10H
R20H

R35H
R45H

Voltage

Cooling

Capacity

Btuh (kW)

EER

Indoor

Air Flow

Cooling

CFM (L/S) Btuh (kW)

Sensible

EER

8.4 0.66

Heat

Ratio

0.79

Heating

Capacity

Indoor Air

Flow

440 (207.7)
350 (165.2)

400 (188.8)
350 (165.2)
440 (207.7)

400 (188.8)

380 (179.3)

Indoor

Air Flow

COP

Heating

CFM (L/S) CFM (L/S) dBa

Fresh Air

Inlet Flow

35 (17) 75 140 (63.5)

50 (24) 69 140 (63.5)

60 (28) 70 140 (63.5)

95 (45) 69

Sensible

Heat

Ratio

Outdoor

Sound

Fresh Air

Flow

Level

Shipping

Weight

140 (63.5)

Outdoor

Sound

Level

Shipping

Weight

lbs

(Kg)

R_ _H 09

R_ _H 12

R_ _H 15

D 208/230

E 267/277

D 208/230

E 267/277

D 208/230

E 267/277

8800 (2.6)

9400 (2.8)

11400 (3.3)

14000 (4.1)

Table 3 Nominal Capacities

9,000 12,000 15,000 18,000 Btuh

8.9

350 (165.2) 8500 (2.5

8.8

440 (207.7) 9100 (2.7) 450 (212)

350 (165.2)

8.4

400 (188.8) 450 (212)

400 (188.8)

7.8

450 (212.4)

11200 (3.3) 2.6

14200 (4.2)

2.7

2.5

400 (189)

400 (189)

450 (212)

500 (236)

0.79

0.66

0.69 60 (28) 7070

Straight Cooling Nominal Capacities

2.6 3.5 4.4 5.3 kW

Heat Pump Nominal Capacities

35 (17)

50 (24) 69

75

140

(63.5)

9,000 12,000 15,000 Btuh

2.6 3.5 4.4 kW

P/N 2400103028, Rev. A [10/15/2013] 5 Made in USA

DIMENSIONAL/PHYSICAL DATA

Figure 1 R10C

R10H Dimensions - Inches (mm)

Figure 2 R20C

R20H Dimensions - Inches (mm)

The Right Fit for Comfort 6 P/N 240010328, Rev. A [10/15/2013]

CABINET

WALL SLEEVE

AIR FILTER 8" x 30"

PERMANENT

ALUMINUM MESH

[374]

14 3/4"

[100]

4"

[25]

1"

26"

[660]

43"

1091

47"

[1194]

[464]

18 1/4"

DIMENSIONAL/PHYSICAL DATA

Figure 3 R20C With Fedders Unizone Option - Dimensions - Inches (mm)

[102]

4"

Figure 4 R35C

R35H Dimensions - Inches (mm)

P/N 2400103028, Rev. A [10/15/2013] 7 Made in USA

DIMENSIONAL/PHYSICAL DATA

Figure 5 R45C

R45H Dimensions - Inches (mm)

The Right Fit for Comfort 8 P/N 240010328, Rev. A [10/15/2013]

PRODUCT DESCRIPTION

Figure 6 R10C

Rating

Plate

R10H Chassis

Aquastat Connection

(Factory) Installed

Hydronic Connection

Electrical

Diagram

jumper

MTR Valve

Valve Switch
(Hydronic Only)

Fresh Air

Switch

(FAS)

Thermostat

Hydronic

NO/NC Switch

Valve Orientation

Switch (VOS)

Line

Cord

Fan

Cycle

Switch

(FCS)

High

Pressure

Switch

(HPS)
reset

Fresh Air

Switch

(FAS)

Unit Mount

Fan

Speed

Switch

(FSS)

System

Switch

(SS)

Remote

Fan

Speed

Switch

(FSS)

Figure 7 R20C

Fresh Air

Switch

(FAS)

Fresh Air

Switch

(FAS)

Thermostat

R20H Chassis

Remote Mount

Fan

Speed

Switch

(FSS)

Fan
Speed
Switch

(FSS)

System

Switch

(SS)

Line

Cord

High Pressure

Switch (HPS)

reset

Rating

Plate

Electrical
Diagram

Fan Cycle

Switch (FCS)

Aquastat Connection

(Factory) Installed

jumper

Hydronic

Connection

MTR Valve

P/N 2400103028, Rev. A [10/15/2013] 9 Made in USA

PRODUCT DESCRIPTION

Figure 8 R20C With Fedders Uni-Zone Option

Fresh Air

Switch

(FAS)

Unit mount & Remote Mount

System

Switch

(SS)

Line

Cord

Fan

Speed

Switch

(FSS)

High

Pressure

Switch

(HPS)

Cord

Fan

Cycle

Switch

(FCS)

Aquastat

W/ Jumper

MTR Valve

Line

Rating

Plate

Electrical

Diagram

Figure 9 R35C

High

Pressure

Switch

(HPS)

MTR Valve

Aquastat

W/ Jumper

Fan

Cycle

Switch

(FCS)

R35H Chassis

Electrical

Diagram

Hydronic

NO/NC Switch

Valve Orientation

Switch (VOS)

Rating

Plate

Fresh

Air

Switch

Line

Cord

System

Switch

(SS)

Fan

Speed

Switch

(FSS)

Fresh Air

Switch

(FAS)

Unit Mount

Thermostat

Remote

Fan

Speed

Switch

(FSS)

The Right Fit for Comfort 10 P/N 240010328, Rev. A [10/15/2013]

PRODUCT DESCRIPTION

Figure 10 R45C

Electrical

Diagram

Rating

Plate

R45H Chassis

Aquastat

W/ Jumper

MTR Valve

Line

Cord

Fan

Cycle

Switch

(FCS)

High

Pressure

Switch

(HPS)

Fresh Air Switch

(FAS)

Thermostat

Fresh Air

Switch

(FAS)

Unit Mount

Fan

Speed

Switch

(FSS)

System

Switch

(SS)

Remote Mount

Fan

Speed

Switch

(FSS)

P/N 2400103028, Rev. A [10/15/2013] 11 Made in USA

PRODUCT DESCRIPTION

Product Description

• RetroAire Replacement Packaged Terminal Air
Condition/Heat Pumps units are straight cooling (PTAC)
or heat pump systems (PTHP).

• Both PTAC and PTHP congurations t wall sleeves of
units listed on front cover.

• Heat pumps (PTHP) operate in mechanical heat mode
down to outdoor temperature of 40°F (4.4°C). Below
40°F (4.4°C) heating is accomplished by auxiliary heat
option.

Retroaire PTAC/PTHP

• R-410A refrigerant.

• High-efciency rotary compressors.

• Two fan speeds.

• Positive condensate re-evaporation.

• PTAC/PTHP units are available in nominal sizes of
9,000 Btuh, (2.6kW) 12,000 Btuh (3.5kW) or
15,000 Btuh (4.4kW).

• PTAC units (straight cooling only) are available at
18,000 Btuh (5.3kW).

• Coefcient of performance (COP) ratings 2.90 for heat
pumps.

Standard Controls And Components

Construction

• Chassis constructed of 20 gauge galvanized steel.

• Condenser bafe options accommodate extended wall
sleeve applications. (Consult manufacturer).

• Powder-coated condenser and evaporator drain pan.

• Foam strip seal for supply air duct.

• Weather strip insulation.

Air Systems

• Thermally-protected motor PSC type.

• Indoor fan forward curved type, directly mounted to
motor shaft.

Controls

• Unit-mounted operating controls include thermostat, fan
speed control, heat/cool switch, fan cycle switch, fresh
air switch (if equipped).

• Use of 1-stage or 2-stage thermostat. 2 stage
thermostat is capable of activating emergency heat if
auxiliary heat source is available.

• Low ambient protection — see "Microprocessor control
board" for details.

• Ability to control a normally-open or normally-closed
motor valve switch (on hydronic heat units only). Valve
controls must be ordered for 24V or line voltage.

• All hydronic heat units include molex plugs for
connection of hydronic valve motor.

• Remote mount controls include fan speed control and
fresh air switch (if equipped).

• Equipped with manual reset high pressure switch which
prevents abnormal high pressure operation.

Microprocessor Control Board

• Universal control board used in straight cooling, electric
resistance heat, hydronic heat, or cooling/heat pump
applications.

• Random start timer prevents multiple units from
simultaneous startups after power interruption or on
initial power-up.

• Fan purge — fan remains on for 60 seconds after heat/
cool is satised.

• Anti-short-cycle compressor protection prevents
compressor from rapid cycling.

• Freeze-protection prevents evaporator coil freeze up.

• Low ambient lockout prevents compressor operation in
outdoor temperatures less than 40°F (4.4°C). (On PTHP
units supplied with unit-mounted control, control causes
automatic changeover to auxiliary heat, if installed.)

• Test operation — all timers are temporarily suppressed
to allow ease of testing or troubleshooting.

• Control board LED provides self-diagnostic
troubleshooting codes, see "Sequence of operation."

• Unit mount controls include eld selection switch to
control indoor fan by either cycling with compressor
operation or continuously with unit.

Condensate Removal

• Outdoor fan incorporates condensate slinger ring.
Condensate is thrown onto coil, where it evaporates.

• Thermostatic drain pan valve for condensate
elimination when outdoor temperature drops below
60°F (15°C) (heat pump units only).

The Right Fit for Comfort 12 P/N 240010328, Rev. A [10/15/2013]

PRODUCT DESCRIPTION

Manufacturer Installed Options (Consult
manufacturer)

• 265/277V(12 and 15 only)

• 115V (09 &12 Models Only)

• Corrosion-resistant coil option — used for seacoast
and harsh-environment usage; coated aluminum
n/copper tube condenser coil.

• Motorized fresh-air damper

• Supplemental electric heat

• Hydronic heat controls

• Front air intake

Field-Installed Accessories

• Hydronic heat — coil assembly is shipped loose for eld
installation.

• Remote wall thermostat — digital 1-stage or 2-stage
available.

• Wall sleeves, louvers, and cabinets.

• Control - delays fan start-up until coil reaches 100°F
(38°C) to virtually eliminate "cold" blow condition.

• Hydronic control valve , water 2 way & 3 way.

• Hydronic control valve, steam 2 way.

• Hydronic Isolation valve, 1/2 in sweat connection.

P/N 2400103028, Rev. A [10/15/2013] 13 Made in USA

PTAC/PTHP INSTALLATION PREPARATION

!

WARNING

Electrical shock hazard. Before opening existing
unit, open power supply disconnect switch. Secure
switch in open position during installation. Attach
sign stating "DO NOT TURN ON".

Unplug existing unit at wall outlet on plug and
receptacle connection units. DO NOT plug new unit
until installation is complete and start-up checklist is
completed.

Failure to follow these instructions could result in
death or serious injury.

!

WARNING

Moving parts if not avoided, could result in death or
serious injury. Avoid contact with moving parts when
testing or servicing unit.

Electrical Supply

• All eld wiring shall conform to requirements of
authority having jurisdiction or in absence of such
requirements:

Electrical Power Connection

1.

Verify RetroAire unit rating plate for circuit ampacity
and required breaker or fuse size.

2.

Verify existing breaker or fuse is correct size.

• Replace breaker or fuse if incorrectly-sized.

• Breakers shall be type HACR only.

3.

Cord-connected units — verify wall outlet is correct
rating. Outlet's blade conguration must match cord
supplied with RetroAire unit.

4.

Hard-wired units — verify power wiring is correctly
sized. Inspect existing wiring for cuts or frayed wires.
Replace any damaged wiring.

Remove Old Chassis

1.

Disconnect power or unplug cord before proceeding.

2.

Remove front of existing room enclosure to expose old
chassis.

3.

Loosen tie-down bolts or screws and remove old
chassis.

• United States - National Electrical Code, ANSI/NFPA 70

• Canada - CSA C22.1 Canadian Electrical Code Part 1.

• UNITS RATED 208/230V — RetroAire unit is wired for
230v primary voltage from manufacture. Transformer
must be rewired by installer if jobsite voltage is 208v.
Change transformer tap from orange to red. See wiring
diagram for details.

• Protect with separate branch circuit protected by fuse or
breaker. Refer to unit rating plate for proper wire and
breaker or fuse size.

• Use of extension cords is prohibited.

• DO NOT connect RetroAire unit to circuit with
incorrectly-sized over current protection device.

• All cord-connected 265 volt units must be plugged into
receptacles within unit subbase or chassis.

Verify existing wall sleeve/enclosure:

• Use RetroAire replacement PTAC/PTHP's with metal wall
sleeves.

• Secure existing front panels by screws that prevent
contact with all parts.

• Minor dimensions of openings must not exceed ½ inch
(12.5mm).

NOTICE

Dispose of old chassis following existing State and/or
Federal regulations.

4.

Inspect wall sleeve/cabinet for rust, holes, or damage.
A. Clean wall sleeve of any dirt.

B. Repair any damage.

C. Verify proper drainage of condensate or

rainwater to exterior of building.

5.

Remove or repair old weather seals. Make note of
location for installation of new seals.

6.

Check wall sleeve/cabinet to ensure all drain holes are
open and:

A. Wall sleeve/enclosure is level left to right

B. Back is pitched to outside by ½ in (12.5mm)

maximum.

7.

Inspect outdoor louver for minimum free area of 70%.
Remove any obstructions before installing new chassis.

8.

Read and understand all instructions in this manual
before attempting installation or operation.

• Dimensions of indoor air discharge grill shall be not less
than 26” x 4”. Grill shall separate top surface of chassis
from top surface of discharge grill by minimum of 1 in
(25.4mm).

• For all models, outdoor openings must prevent contact
of all moving parts by means of louvers or grills, with
minor dimension not exceeding 1 in (25.4mm).

The Right Fit for Comfort 14 P/N 240010328, Rev. A [10/15/2013]

INSTALLATION INSTRUCTIONS - R10C | R10H

Installation - R10C R10H

1.

Verify existing wall thickness — distance from
condenser coil to outdoor louver varies with sleeve depth.

• Unit(s) ship standard with 1-3/8" (35mm) & 1-1∕8”
(38mm) bafes. Figure 9.

• Optional condenser-side air bafe kit for chassis
installation in deeper-than-standard wall sleeves is
available.

2.

Verify weather angles — Slide unit into wall sleeve.

• If supply duct on cooling chassis does not line up
with supply vent on room cabinet, adjust or change
factory installed weather angle on top and sides.
Allow for adjustment to align supply vent when
mounting unit to wall sleeve Figure 11.

• Slide unit back in wall sleeve to verify proper t after
adjustment.

3.

Install bafes — Slide unit back out of wall sleeve.
Remove both supplied sets of bafes from kit bag.
Install only one set of left and right side bafes on
condenser coil by completing following steps:

A. Verify bafes come in contact with outdoor louver.
B. Verify bafes are directed inward toward center of

coil Figure 13.

C. Secure bafes tightly into existing holes of

condenser coil using screws provided.

Figure 11 Weather Angles (in factory location)

Figure 12 Weather Angles Reversed to Gain

Extra Depth

NOTICE

Install correct condenser air bafes or performance
may be impaired.

4.

Apply 2” x 1-1∕2” open-cell foam strips around
supply air duct to ensure all conditioned air is delivered
into room Figure 13. Failure to do so results in
recirculation of conditioned air through cabinet causing
unit to short cycle and coil to freeze.

5.

Apply 1” x 1” open-cell foam strips to weather
angle. Prevents outside air from entering around
chassis to room from sides and top of cabinet.

Install strips between wall sleeve and cooling chassis
Figure 14. Verify solid air seal between wall sleeve and
chassis. Air leakage from outdoor to indoor will result
in system problems (example — coils freezing, short
cycling, and constant running of unit).

6.

Connecting (optional) hydronic coil controls — If
hydronic heat option has been ordered, eld install
hydronic coils on new unit.

A. Hydronic coils are not factory installed.
B. Old unit coil can be located in subbase, under

or above chassis in special attachment. It is
necessary to know where coil is to be located and
physical size of coil if ordered for replacement.
Install new coil in same manner as coil it is
replacing.

Figure 13 Direction of Bafes and Foam

In

stallation

P/N 2400103028, Rev. A [10/15/2013] 15 Made in USA

INSTALLATION INSTRUCTIONS - R10C | R10H

• Remove 2-position connector assembly from kit
bag supplied with unit (2 yellow wires attached).

• Connect 2-position connector to 2-position
connection located on bottom of control box
panel.

7.

Field install (optional) Aquastat

A. Remove black jumper wire located on bottom panel

of control box (also terminated with 2-position

connector).

B. Cut jumper wire in middle and splice Aquastat to

jumper.

C. Place connector back into original location. Refer to

wiring diagram on unit for details.

8.

Secure chassis

• Verify all seals are properly located,

• Verify correct bafes are attached to condenser
coil, and properly orientated,

• Slide unit into nal position and tighten tie down
bolts or screws.

9.

Hard-wired units — If unit is hard wired, follow
instructions on pages 40-44 to verify existing wiring
and over current protection.

A. Remove line cord wires from PTAC/PTHP power

entrance terminals.

B. Route power supply wiring through strain-relief

bushing and connect leads to power entrance
terminals.

C. Secure strain-relief clamp. (If wiring is through

conduit, insert conduit through control box
knockout and secure in place.)

D. DO NOT turn on power until completing instructions

in "Inspection and Startup" on page 28.

10.

Do not plug in line cord, Follow instructions in
"Inspection and Startup".

Figure 14 Foam tape Installation Against

Wall Sleeves

The Right Fit for Comfort 16 P/N 240010328, Rev. A [10/15/2013]

INSTALLATION INSTRUCTIONS — R20C| R20H

Installation - R20C R20H

1.

Verify existing wall thickness — distance from
condenser coil to outdoor louver varies with sleeve
depth.

• Standard air bafes are included with each unit to
accommodate most installation requirements.

• Other air bafe kits are available from manufacturer
(for unique applications).

2.

Verify Weather Angle — Slide unit into wall sleeve.

• If supply duct on cooling chassis does not line
up with supply vent on room cabinet, it may be
necessary to reverse the manufacturer installed
weather angles on top and sides.

• This will allow approximately 1” of adjustment for
alignment with supply vent when mounting unit to
wall sleeve. See Figures 15 and 16. Slide the unit
back in the wall sleeve to verify proper t.

Adjustable Weather Angle

Dimension "A" 8 5/8” 7 7/8” 9 11/16”

Dimension "B" 9 1/2” 10 1/4” 8 7/16”

Dimensions are calculated without foam gaskets.
(1) Standard position — Factory installed.
(2) Position for Climate Master 702 and 703.

INSTALLATION FOR NEW CONSTRUCTION

(1)

(1)

(2)

8”

10 1/8”

(2)

Figure 15 Weather Angle - Factory Location

Figure 16 Weather Angles Reversed to Gain

Extra Depth

3.

Install bafes — Slide unit back out of wall sleeve.
Remove both supplied sets of bafes from kit bag.
Install only one set of left and right side bafes on
condenser coil as follows:

A. Verify bafes come in contact with outdoor louver.
B. Verify bafes are directed inward toward center of

coil Figure 17.

C. Secure bafes into existing holes of condenser coil

using screws provided.

NOTICE

Install correct condenser air bafes or performance
may be impaired.

4.

Apply ½” x ½” open-cell foam strips around
supply air duct to ensure all conditioned air is delivered
into room Figure 17. Failure to do so results in
recirculation of conditioned air through cabinet causing
unit to short cycle and coil to freeze.

5.

Apply 1” x 1” open-cell foam strips to weather
angle. Prevents outside air from entering around
chassis to room from sides and top of cabinet.

Install strips between wall sleeve and cooling chassis
Figure 18. Verify solid air seal between wall sleeve and
chassis. Air leakage from outdoor to indoor will result
in system problems (example — coils freezing, short
cycling, and constant running of unit).

Figure 17 D i r e c t i o n o f B a f  e s a n d F o a m

Installation

P/N 2400103028, Rev. A [10/15/2013] 17 Made in USA

INSTALLATION INSTRUCTIONS — R20C| R20H

6.

Connect (optional) hydronic coil controls — If
hydronic heat option has been ordered, hydronic coils
will need to be eld installed on new unit.

A. Hydronic coils are not factory installed and need to

be ordered and eld installed on new unit.

B. Coil with old unit can be located in subbase, under

or above chassis in special attachment. It is
necessary to know where coil is to be located and
physical size of coil if ordered for replacement.
New coil should be installed in same manner as coil
it is replacing.

• Remove 2-position connector assembly from kit
bag supplied with unit (2 yellow wires attached).

• Connect 2-position connector to 2-position
connection located on bottom of control box panel.

7.

Field install (optional) Aquastat

A. Remove black jumper wire located on bottom panel

of control box (also terminated with 2-position

connector).

B. Cut jumper wire in middle and splice Aquastat to

jumper.

C. Place connector back into original location. Refer to

wiring diagram on unit for details.

8.

Secure chassis

• Verify all seals are properly located,

Figure 18 Foam tape installation against wall

sleeve

• correct bafes are attached to condenser coil,
and properly orientated,

• slide unit into nal position and tighten tie down
bolts or screws as necessary.

9.

Hard-wired units — If unit is hard wired, follow
instructions on pages 37-39 to verify existing wiring
and over current protection.

A. Remove line cord wires from PTAC/PTHP power

entrance terminals.

B. Route power supply wiring through strain-relief

bushing and connect leads to power entrance
terminals.

C. Secure strain-relief clamp. (If wiring is through

conduit, insert conduit through control box
knockout and secure in place.)

D. DO NOT turn on power until completing instructions

in "Inspection and Startup" on page 28.

10.

Do not plug in line cord, Follow instructions in
"Inspection and Startup".

The Right Fit for Comfort 18 P/N 240010328, Rev. A [10/15/2013]

INSTALLATION INSTRUCTIONS — R20C WITH FEDDERS UNI-ZONE OPTION

Installation - R20C w/Fedders Uni-Zone Option

1.

Verify existing wall thickness — distance from
condenser coil to outdoor louver varies with sleeve
depth.

• Standard air bafes are included with each unit to
accommodate most installation requirements.

• Optional condenser side bafe kit is available from
manufacturer for installation in deeper than standard
walls.

• Weather angles should need no adjustment.

2.

Verify air supply alignment — Slide unit into wall
sleeve.

• Supply duct on cooling chassis should line up with
supply vent on room cabinet.

3.

Install bafes — Slide unit back out of wall sleeve.
Remove supplied bafes from kit bag. Install left and
right side bafes on condenser coil as follows:

A. Verify bafes come in contact with outdoor louver.
B. Verify bafes are directed inward toward center of

coil Figure 19.

C. Secure bafes into existing holes of condenser coil

using screws provided.

Figure 19 Bafe Direction and Foam

Installation

1/2" x 1/2"
Foam Tape

Mount to rear

edge

Baes Directed

Inward

Toward Coil

Weather Angle

Control Box

1" x 1"

Foam Tape

Mount to rear

edge

NOTICE

Install correct condenser air bafes or performance
may be impaired.

4.

Install weather angle supplied on side of unit. Secure
with provided screws. Face insulation toward interior of
building.

5.

Apply ½” x ½” open-cell foam strips around
supply air duct to ensure all conditioned air is delivered
into room Figure 14. Failure to do so results in
recirculation of conditioned air through cabinet causing
unit to short cycle and coil to freeze.

6.

Apply 1” x 1” open-cell foam strips to weather
angle. Prevents outside air from entering around
chassis to room from sides and top of cabinet.

Install strips between wall sleeve and cooling chassis
Figure 19. Verify solid air seal between wall sleeve and
chassis. Air leakage from outdoor to indoor will result
in system problems (example — coils freezing, short
cycling, and constant running of unit).

7.

Connect (optional) hydronic coil controls — If
hydronic heat option has been ordered, hydronic coils
will need to be eld installed on new unit.

A. Hydronic coils are not factory installed and need to

be ordered and eld installed on new unit.

B. Coil with old unit can be located in subbase, under

or above chassis in special attachment. It is
necessary to know where coil is to be located and
physical size of coil if ordered for replacement.
Install new coil in same manner as coil it is
replacing.

P/N 2400103028, Rev. A [10/15/2013] 19 Made in USA

INSTALLATION INSTRUCTIONS — R20C WITH FEDDERS UNI-ZONE OPTION

• Remove 2-position connector assembly from kit
bag supplied with unit (2 yellow wires attached).

• Connect 2-position connector to 2-position
connection located on bottom of control box panel.

8.

Field install (optional) Aquastat

A. Remove black jumper wire located on bottom panel

of control box (also terminated with 2-position

connector).

B. Cut jumper wire in middle and splice Aquastat to

jumper.

C. Place connector back into original location. Refer to

wiring diagram on unit for details.

9.

Secure chassis

• Verify all seals are properly located.

• Verify correct bafes are attached to condenser
coil, and properly orientated.

• Slide unit into nal position and tighten tie down
bolts or screws.

10.

Hard-wired units — If unit is hard wired, follow
instructions on pages 37-39 to verify existing wiring
and over current protection.

A. Remove line cord wires from PTAC/PTHP power

entrance terminals.

B. Route power supply wiring through strain-relief

bushing and connect leads to power entrance
terminals.

C. Secure strain-relief clamp. (If wiring is through

conduit, insert conduit through control box
knockout and secure in place.)

D. DO NOT turn on power until completing instructions

in "Inspection and Startup" on page 28.

11.

Do not plug in line cord, Follow instructions in
"Inspection and Startup".

The Right Fit for Comfort 20 P/N 240010328, Rev. A [10/15/2013]

INSTALLATION INSTRUCTIONS — R35C| R35H

Installation - R35C

1.

Verify existing wall thickness — distance from
condenser coil to outdoor louver varies with sleeve
depth.

• Chassis includes ½" air bafe to accommodate the
most common condenser coil to outdoor louver
requirements.

• Optional condenser-side air bafe kit for chassis
installation in deeper than standard walls is available
from manufacturer.

2.

Verify air supply alignment — slide unit into wall­sleeve. Supply duct on the cooling chassis should line
up with supply vent on room cabinet.

3.

Install bafes — Slide unit back out of wall sleeve.
Remove supplied bafes from kit bag. Install only one
set of left and right side bafes on condenser coil by
completing following steps:

A. Verify bafes come in contact with outdoor louver.
B. Verify bafes are directed inward toward center of

coil Figure 20.

C. Secure bafes tightly into existing holes of

condenser coil using screws provided.

Figure 20 Direction Of Bafes and Foam

Installation

Install 2" x ¹∕₂" foam tape

Figure 21 Front View of Chassis

NOTICE

Install correct condenser air bafes or performance
may be impaired.

4.

Apply 1” x 1” open-cell foam strips to weather
angle. Prevents outside air from entering around
chassis to room from sides and top of cabinet.

Install strips between wall sleeve and cooling chassis.
See Figure 20. Verify solid air seal between wall sleeve
and chassis. Air leakage from outdoor to indoor will
result in system problems (example — coils freezing,
short cycling, and constant running of unit).

R35C/H is equipped with a bracket allowing unit to
be adjusted up and down in the chassis of un-leveled
wall sleeves. Adjust leveler leg to desired height and
tighten down using bolts supplied on bracket . See
Figure 21.

5.

Connecting (optional) hydronic coil controls — If
hydronic heat option has been ordered, hydronic coils
will need to be eld installed on new unit.

A. Hydronic coils are not factory installed and need to

be ordered.

B. Coil with old unit can be located in subbase, under

chassis in special attachment. It is necessary to
know where coil is to be located and physical size
of coil if ordered for replacement. New coil should
be installed in same manner as coil it is replacing.

C. Remove 2-position connector assembly from kit

bag supplied with unit (2 yellow wires attached).

D. Connect 2-position connector to 2-position

connection located on bottom of control box panel.

P/N 2400103028, Rev. A [10/15/2013] 21 Made in USA

INSTALLATION INSTRUCTIONS — R35C| R35H

6.

Field install (optional) Aquastat

A. Remove black jumper wire located on bottom panel

of control box (also terminated with 2-position
connector).

B. Cut jumper wire in middle and splice control to

jumper.

C. Place connector back into original location. Refer to

wiring diagram on unit for details.

7.

Secure chassis

• Verify all seals are properly located.

• Verify correct bafes are attached to condenser
coil, and properly orientated.

• Slide unit into nal position and tighten tie down
bolts or screws.

8.

Hard-wired units — If unit is hard wired, follow in­structions on pages 38-40 to verify existing wiring and
over current protection.

A. Remove line cord wires from PTAC/PTHP power

entrance terminals.

B. Route power supply wiring through strain-relief

bushing and connect leads to power entrance ter­minals.

C. Secure strain-relief clamp. (If wiring is through

conduit, insert conduit through control box knock­out and secure in place.)

D. DO NOT turn on power until completing instructions

in "Inspection and Startup" on page 28.

9.

Do not plug in line cord, Follow instructions in
"Inspection and Startup".

The Right Fit for Comfort 22 P/N 240010328, Rev. A [10/15/2013]

INSTALLATION INSTRUCTIONS — R45C | R45H

Installation - R45C/R45H

1.

Verify existing wall thickness — distance from
condenser coil to outdoor louver varies with sleeve
depth.

• Two sets of air bafes are included to accommodate
most installation requirements.

• Air bafe kits are available from the manufacturer
for unique for applications. Have wall sleeve depth
available when ordering to ensure proper bafe size.

2.

Verify Weather Angle

• Slide unit into wall sleeve.

• If supply duct on cooling chassis does not line up
with supply vent on room cabinet, reverse factory
installed weather angle on top and sides allowing
approximately 1” of adjustment for alignment with
supply vent when mounting unit to wall sleeve. See
Figures 22 and 23.

• Slide unit back into wall sleeve and verify proper t.

3.

Install Bafes - Slide unit back out of wall sleeve.
Locate both sets of bafes from kit bag supplied with
unit. Install only one set of left and right side bafes
on condenser coil by completing following steps:

• Choose the proper tting bafes for your application
verify bafes selected come in contact with outdoor
louver.

Figure 22 Factory Located Weather Angle

Figure 23 Weather Angles Reversed To Gain

Extra Distance

• Verify bafes are directed inward toward center of
coil. See Figure 24.

• Secure bafes tightly into existing holes of condenser
coil using provided screws.

NOTICE

Install correct condenser air bafes or performance
may be impaired.

4.

Apply ½” x ½” open-cell foam strips around
supply air duct to ensure all conditioned air is delivered
into room. See Figure 24. Failure to do so results in
recirculation of conditioned air through cabinet causing
unit to short cycle and coil to freeze.

5.

Apply 1” x 1” open-cell foam strips to weather
angle. Prevents outside air from entering around
chassis to room from sides and top of cabinet.

Install strips between wall sleeve and cooling chassis
Figure 24. Verify solid air seal between wall sleeve and
chassis. Air leakage from outdoor to indoor will result
in system problems (example — coils freezing, short
cycling, and constant running of unit).

6.

Connecting (optional) hydronic coil controls — If
hydronic heat option has been ordered, hydronic coils
will need to be eld installed on new unit.

A. Hydronic coils are not factory installed and need to

be ordered.

Figure 24 Direction Of Bafes And Foam

Installation

P/N 2400103028, Rev. A [10/15/2013] 23 Made in USA

INSTALLATION INSTRUCTIONS — R45C | R45H

B. Coil with old unit can be located in subbase, under

or above chassis in special attachment. It is
necessary to know where coil is to be located and
physical size of coil if ordered for replacement.
New coil should be installed in same manner as coil
it is replacing.

C. Remove 2-position connector assembly from kit

bag supplied with unit (2 yellow wires attached).

D. Connect 2-position connector to 2-position

connection located on bottom of control box panel.

7.

Field install (optional) Aquastat

A. Remove black jumper wire located on bottom panel

of control box (also terminated with 2-position
connector).

B. Cut jumper wire in middle and splice Aquastat to

jumper.

C. Place connector back into original location. Refer to

wiring diagram on unit for details.

8.

Secure chassis

• Verify all seals are properly located.

• Verify correct bafes are attached to condenser coil,
and properly orientated.

• Slide unit into nal position and tighten tie down
bolts or screws.

9.

Hard-wired units — If unit is hard wired, follow
instructions on pages 38-40 to verify existing wiring
and over current protection.

A. Remove line cord wires from PTAC/PTHP power

entrance terminals.

B. Route power supply wiring through strain-relief

bushing and connect leads to power entrance
terminals.

C. Secure strain-relief clamp. (If wiring is through

conduit, insert conduit through control box
knockout and secure in place.)

D. DO NOT turn on power until completing

instructions in "Inspection and Startup" on page

28.

10.

Do Not Plug Line Cord In, If In Used Condition.

Follow instructions in "Inspection and Startup".

The Right Fit for Comfort 24 P/N 240010328, Rev. A [10/15/2013]

SEQUENCE OF OPERATION

General
R_ _C units are straight cool, single stage air conditioners

available with electric or hydronic heat.
R_ _H units are limited range, single stage heat pump.

Mechanical compression heating (heat pump mode) is
locked out at outdoor temperatures of approximately 35ºF
(1.7ºC) and below. Below these ambient temperatures,
auxiliary electric or hydronic heat will be used.

Microprocessor Control Board Thermostat and control
connections are made to control board.

A. Two conguration jumpers are located

on board, see Figure 25. Heat Pump
Conguration Jumper is 3 pin jumper.

• Straight Cool units R_ _C, the jumper should be
located on the outside two pins.

• Heat Pump units R_ _H, the jumper should be
located on the inside two pins.

B. Second conguration jumper “TEST” allows for

control’s internal timers to be by-passed for test
purposes. Placing jumper on two pins enables test
mode.

C. Status LED (Light Emitting Diode)

• LED1 is located on center of board. Series of
blinks communicates status of board. Between
blink sequence is separation of approximately 2
seconds. Status Code is listed below.

Figure 25 Control Board

TEST

Cong.

Jumper

LED

Indicator

Light

Heat

Pump

Cong.

Jumper

Trouble

Code

Status

(Blinks)

1

2

3

4

5

Normal Operation

Anti-Short Cycle Timer Active

Outdoor Coil Freeze Protection

Indoor Coil Freeze Protection

Simultaneous “Y” and “W” Call

Initial Power-Up or Power Restoration

When power is applied to unit, either for rst time or after
power failure, board will initialize itself.

1.

During initialization, LED1 will be lit continuously for
approximately 5 seconds.

2.

Following initialization, random start timer is initiated.
Timer adds randomly selected 5-120 seconds to start­up sequence, reducing possibility of multiple units
starting at same time.

3.

Once random start timer has expired, 180 second
Anti-Short Cycle Timer is initiated and Processor Board
Trouble Code LED is set to blink 2 ash code. Timer
prevents compressor from rapid cycling.

4.

After Anti-Short Cycle Timer expires, Processor Board
Trouble Code LED is set to blink 1 blink Trouble Code,
indicating normal operation.

P/N 2400103028, Rev. A [10/15/2013] 25 Made in USA

SEQUENCE OF OPERATION

R_ _C / R_ _H; Cooling Operation

( For unit mount controls)

1.

System Switch [SS] set to “Cool”, and Fan Cycle
Switch [FCS] set to “On” (Continuous Fan Operation),
indoor fan motor starts.

2.

Fan Cycle Switch [FCS] set to “Off” (Cycling Fan
Operation), indoor fan motor starts with call for cooling
from internal thermostat [T’stat].

3.

Units equipped with optional Motorized Fresh Air
Damper, and active Fresh Air Switch [FAS], damper
opens with call for indoor fan.

4.

Room temperature below thermostat setting fan
operation continues as noted above.

5.

Room temperature above thermostat setting, reversing
valve is energized, compressor and outdoor fan
starts provided Anti-Short Cycle Timer has timed out
from initial power-up, power restoration or previous
compressor on cycle. Operation continues until room
temperature satises thermostat.

6.

Once room temperature falls below set point by 3ºF
(2ºC), compressor, outdoor fan motor and reversing
valve are de-energized.

7.

FCS is set to “Off”, indoor fan continues to operate for
60 seconds after compressor stops.

8.

If FCS set to “On”, indoor fan continues to operate.

9.

As soon as compressor is de-energized, Anti-Short
Cycle Timer is initialized and prevents compressor from
starting again for another 180 seconds.

10.

While Anti-Short Cycle Timer is active, Processor Board
Trouble Code LED is set to blink 2 ash code.

11.

After Anti-Short Cycle Timer expires, Processor Board
Trouble Code LED is set to blink 1 blink Trouble Code,
indicating normal operation.

NOTICE

Remote-Mount Cooling Operation depends on features of
wall-mounted thermostat. By default fan will cycle with
call for cooling.

For thermostats with AUTO / ON fan switch, fan runs
continuously if this is “ON” (Continuous Fan Operation).
Fan will cycle with call for cooling if this is set to “AUTO”
(Cycling Fan Operation).

In cooling units will not start if indoor air temperature
is 60ºF (15.5 ºC) or below or if outdoor temperature is
below 40ºF (4.5ºC).

R_ _C / R_ _ H; Heating Operation

1.

System Switch [SS] set to “Heat”, and Fan Cycle
Switch [FCS] set to “On” (Continuous Fan Operation),
indoor fan motor starts.

2.

If Fan Cycle Switch [FCS] is set to “Off” (Cycling Fan
Operation), indoor fan motor starts with call for heat
from internal thermostat [T’stat].

3.

Unit equipped with optional Motorized Fresh Air
Damper, and is active with Fresh Air Switch [FAS],
damper opens with call for indoor fan.

4.

If room temperature is above thermostat setting fan
operation continues as noted above.

5.

If room temperature is below thermostat setting,
action of unit depends on outdoor temperature and
freeze sensor status.

NOTICE

Remote-Mount Heating Operation depends on features of
wall-mounted thermostat. By default fan cycles with call
for Heating.

For thermostats with AUTO / ON fan switch, fan runs
continuously if this is “ON” (Continuous Fan Operation).

Fan cycles with call for heating if this is set to “AUTO”
(Cycling Fan Operation).

• R_ _H; Mechanical Heating “Heat Pump"

1.

Outdoor coil temperature remains above 25 ºF (-4ºC),
compressor and outdoor fan start provided Anti-Short
Cycle Timer has timed out from initial power-up,
power restoration or previous compressor on cycle.
Operation continues until room temperature satises
thermostat.

2.

Once room temperature rises above set point by 3ºF
(2ºC), compressor and outdoor fan motor will de-energize.

3.

FCS set to “Off”, indoor fan continues to operate for
60 seconds after compressor stops.

4.

FCS set to “On”, indoor fan continues to operate.

5.

As soon as compressor is de-energized, Anti-Short
Cycle Timer initializes and prevents compressor from
starting again for another 180 seconds.

6.

While Anti-Short Cycle Timer is active, Processor
Board Trouble Code LED is set to blink 2 ash code.

7.

After Anti-Short Cycle Timer expires, Processor Board
Trouble Code LED is set to ash 1 blink Trouble Code,
indicating normal operation.

The Right Fit for Comfort 26 P/N 240010328, Rev. A [10/15/2013]

SEQUENCE OF OPERATION

• R_ _H; Auxiliary Heating “Electric” or “Hydronic”

1.

Outdoor coil temperature falls to 25ºF (-4ºC) or
below for 180 seconds at anytime during heating call,
compressor and outdoor fan motor are de-energized
and auxiliary heat is energized.

2.

Anti-Short Cycle Timer is initiated, prohibiting
compressor operation for 180 seconds.

3.

Processor Board Trouble Code LED ashes 3 blink
Trouble Code, indicating auxiliary heat operation.
Heating operation with auxiliary heat continues until
outdoor coil sensor reaches 50ºF (10ºC).

• “Electric Heat”

1.

System Switch [SS] set to “Heat”, and Fan Cycle
Switch [FCS] set to “On” (Continuous Fan Operation),
indoor fan motor will start.

2.

Fan Cycle Switch [FCS] set to “Off” (Cycling Fan
Operation), indoor fan motor starts with call for
heating from internal thermostat [T’stat].

3.

Unit equipped with optional Motorized Fresh Air
Damper, and activated with Fresh Air Switch [FAS],
damper opens with call for indoor fan.

4.

Room temperature above thermostat setting fan
operation continues as noted above.

5.

Room temperature below thermostat setting, electric
heater is energized until room temperature satises
thermostat.

6.

Once room temperature increases above set point by
3ºF (2ºC), electric heaters de-energize.

• “Hydronic Heat”

• “Remote Wall Thermostat Controls”

A. Cooling and Heating operate identical to unit

mount controls.
B. See remote control manuals for control details.
C. Remote units do not use system switch, or FCS.

1.

FCS set to “On” (Continuous Fan Operation) and
unit has Control, indoor fan and fresh air motorized
damper operation are controlled by Control.

2.

Control senses temperature of 80 ± 5ºF (26 ± 3ºC)
or below, indoor fan will shut down and motorized
damper closes fresh air door.

3.

With call for heat, signal from processor board
activates water or steam valve.

4.

Unit equipped with eld installed Control [AS], indoor
fan start is delayed until hydronic coil reaches 100 ±
5ºF (38 ± 3ºC).

5.

Signal to water or steam valve continues until room
temperature rises above set point by 3ºF (2ºC).

6.

FCS set to “Off”, indoor fan continues to operate for
60 seconds or until hydronic coil temperature sensed
by Control reaches 80 ± 5ºF (26 ± 3ºC), whichever
occurs rst.

7.

FCS set to “On”, indoor fan de-energizes if Control
senses temperature of 80 ± 5ºF (26 ± 3ºC) or below.

P/N 2400103028, Rev. A [10/15/2013] 27 Made in USA

INSPECTION & START-UP

Before Operating Unit

☐ Read and understand contents of this manual.

☐ Install unit per instructions outlined in this manual

and all applicable local and national codes.

☐ Verify electrical supply matches electrical

requirements of unit, and unit is properly
grounded.

☐ Examine control box. Verify all wire connections

are secure, and control board jumpers are in
proper positions. See "Electrical Connections"
Page 29.

☐ Verify chassis is properly tted to wall sleeve and

securely mounted to surrounding framing.

☐ Verify chassis is level:

– Pour water into drain pan.

– Verify water ows through drain hoses to

condenser side of unit.

☐ Verify indoor blower wheels and outdoor fan

blades are secured to their motor shafts, and
rotate freely.

Any obstruction of supply air, including use of deector
bafes, may cause condensate to form on louver or cabinet
(see Figure 38, page 31).

Figure 26 Proper Air Flow Example

☐ Verify all sheet metal panels are in place and

secure.

☐ Attach front panel to existing cabinet enclosure.

☐ Verify nothing interferes with room discharge air

or return air of units. Examples:

– Check for curtains or drapes that obstruct air

ow. See Figures 26 and 27.

– Check for plush carpeting that can obstruct

return air.

– Items like these can cause serious damage to

chassis.

For optimum performance of your PTAC/PTHP, avoid
restricting air ow. Position of curtains or drapes over
supply air grille may cause air to recirculate without
cooling room. Unit will short cycle and may cause
premature compressor failure.

Figure 27 Restricted Air Flow Diagram

The Right Fit for Comfort 28 P/N 240010328, Rev. A [10/15/2013]

INSPECTION & START-UP

Electrical Connections

!

WARNING

Electrical shock hazard. Disconnect all power
before removing chassis, performing any cleaning,
servicing, or maintenance. Failure to do so could
result in death or serious injury

Refer to wiring diagram attached to unit for wiring details.
All eld wiring shall conform to requirements of authority

having jurisdiction or in absence of such requirements:

• United States

• National Electrical Code, ANSI/NFPA 70

• Canada

• CSA C22.1 Canadian Electrical Code Part 1.

UNITS RATED 208/230V — RetroAire unit is wired for
230v primary voltage from manufacturer.

Transformer must be rewired by installer if jobsite voltage
is 208v.

Change transformer tap from orange to red. See wiring
diagram for details.

Figure 28 TEST Jumper (selects heat pump or

straight cooling)

HP

Straight

Cool Mode

Mode

(jumper center

& top pins)

Heat Pump

Mode

(jumper center

& Btm. pins)

HP

HP

Setting Control Board Jumpers

Control board has two sets of factory installed jumper pins

Figure 29 TEST Jumper (selects heat pump or

on control board, HP jumper and TEST jumper.

HP Jumper — to select heat pump or straight cooling
Pins determine whether unit operates as straight cooling or

as heat pump. See Figures 28 and 29.

• Jumper right pin to center pin for heat pump
operation.

• Jumper left pin to center pin for straight cooling
operation.

TEST Jumper — to select normal or test mode
Jumper is for use in testing only. See Figures 29 and 30.

• When

JUMPER

pins are jumpered together, all
timers are eliminated (example — anti-short cycle,
purge, etc.).

• Used mainly used for production line testing. May be
used for eld testing.

• Units are factory set with jumper on only one pin
(normal operation position).

Test mode

(pins jumpered)

straight cooling)

Normal operation

(pins not jumpered)

TEST

NOTICE

Do not leave unit operating with TEST jumper in
TEST position.

P/N 2400103028, Rev. A [10/15/2013] 29 Made in USA

INSPECTION & START-UP

Start Up

1.

Verify unit is secure and level.

2.

Heat pump units only — Verify thermostatic drain
pan valve is operating correctly. Valve should be closed
if temperature is above 60°F and open if temperature
is below 60°F.

3.

Test optional fresh air damper. Set damper door
switch to "YES" position, verify damper opens and
allows fresh air to be moved into space. Set damper
door switch to "NO" position. Verify ow of air into
space has stopped. Fresh air will only be available
when indoor fan is running.

4.

Verify HP jumper is set correctly for unit type. See
Figure 28, page 29

5.

Set TEST jumper to test mode. Will disable time
delays, including anti-short-cycle and purge times. See
Figure 30.

6.

Verify unit is wired according to instructions, including
requirements on page 28.

7.

Connect Electric power to unit .

8.

Turn on unit to check for proper operation. Check con­densate removal by pouring water into base pan, place
unit in cooling mode, and with condenser fan running,
verify water is picked up by slinger ring and thrown
onto outdoor coil.

Figure 30 Circuit Board

TEST JUMPER

NOTICE

Compressor will not start until anti-short time period
has elapsed. On power-up, there will be delays for
control board initialization and random-start timing.
See “Sequence of Operation” on page 25.

Unit-Mounted Thermostat

1.

Use system switch to place PTAC/PTHP in either COOL,
HEAT, or

in all positions.

2.

Use fan speed switch to place fan in either LOW
or HIGH speed.
heating and cooling.

3.

Test operation of Fan Cycle switch (toggle switch on
side of control box), with switch set at ON (continuous
fan operation) or AUTO (cycling with thermostat)
for both heating and cooling. Set switch in desired
position.

4.

Rotate thermostat knob to left to increase setpoint
temperature, or right to decrease. Turning unit-mount­ed thermostat knob to far left will produce warmest
room temperature, while turning it way to right will
produce coolest. Setting can be adjusted for personal
comfort.

OFF

position. See Figure 31. Test operation

Test operation in both positions for

HEAT

PUMP

JUMPER

Figure 31 Mount Control

THERMOSTAT KNOB

The Right Fit for Comfort 30 P/N 240010328, Rev. A [10/15/2013]

INSPECTION & START-UP

NOTICE

DO NOT rotate thermostat knob back and forth
from heating to cooling. This causes compressor to
cycle on and off rapidly and will cause damage to
compressor. Allow compressor to remain off for at
least three minutes prior to restarting unit.

Remote-Mounted Thermostat

1.

Use thermostat to place PTAC/PTHP in either COOL,
HEAT, or OFF position. Test operation in all positions.

2.

If thermostat is tted with fan switch, set as desired
places fan in either ON, OFF, or AUTO. Test operation
in all positions.

3.

Check thermostat calibration for both heating and
cooling operation.

Straight Cooling PTAC's

Cooling Cycle

1.

Place thermostat or system switch in COOL position.

2.

Adjust thermostat to cooler temperature until indoor
fan starts running. Compressor and outdoor fan should
turn on and cold air begin to ow from unit. Let unit
continue operating to cool room and remove humidity.

3.

After unit starts running and space gets cooler, adjust
thermostat to warmer temperature until compressor
cycles off.

4.

If colder room temperature is desired, adjust thermo­stat to cooler temperature setting, turning compressor
and both fans back on.

5.

If warmer room temperature is desired, adjust ther­mostat to warmer temperature setting. Compressor
and outdoor fan stops and indoor fan switches off after
sixty-second purge time has elapsed.

6.

Place thermostat or system switch in the OFF position.
All operation should stop.

NOTICE

Room temperature must be above 65°F (18°C) for
compressor to operate in cooling mode on PTAC's
with unit mounted controllers.

Heating Cycle — Electric Option

1.

Place thermostat or system switch in HEAT position.

2.

Adjust thermostat for warmer temperature until
indoor fan starts running and electric heater coil starts
emitting heat.

3.

Outdoor fan does not run during heating cycle.

4.

After unit starts running and space gets warmer,
adjust thermostat to cooler temperature until electric
heater turns off.

5.

Warmer room temperature is desired, adjust
thermostat to warmer temperature setting, turn
electric heater back on.

6.

Cooler room temperature is desired,
thermostat to cooler temperature setting
electric heater turns off. Indoor fan will switch off after
sixty-second purge time has elapsed.

7.

Place thermostat or system switch in OFF position. All
operation should stop.

adjust

until

NOTICE

Room temperature must be below 85°F (29.4°C)
to energize heater on PTAC's with unit-mounted
controllers.

Heating Cycle — Hydronic Option

Verify motor valve is rated for correct voltage. RetroAire
units with unit mount controls will power hydronic valve
that is same voltage as unit (ex: unit rated 208/230v will
power 208/230v).

Switch is provided on control box to change from NO to
NC. Verify wiring diagram (located on unit) and voltage
application for specic unit.

Other valve congurations and voltage options are
available. Consult Manufacturer if unit voltage does not
match your valve application.

1.

Place thermostat or system switch in HEAT position.

2.

Adjust thermostat to warmer temperature.

– Signal from processor board activates water or

steam valve.

– Motorized valve opens and allows hot water or

steam to run through coil.

– Indoor fans run, blowing air through hydronic

NOTICE

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

P/N 2400103028, Rev. A [10/15/2013] 31 Made in USA

coil. Units equipped with Control, indoor
fan and motorized damper operation will be
delayed until hydronic coil reaches 100 ± 5°F
(38 ± 3°C).

– Signal to water or steam valve will continue

until room temperature rises above setpoint by
3°F (2°C).

INSPECTION & START-UP

3.

After unit starts running and area is warmer, adjust
thermostat to cooler temperature, hydronic valve will
close and indoor fan will switch off after sixty-second
purge time has elapsed.

4.

For warmer room temperature, adjust thermostat to
warmer temperature setting, which opens hydronic
valve and turns on indoor fan.

5.

For cooler room temperature, adjust thermostat to
cooler temperature setting. Hydronic valve closes and
indoor switches off after sixty-second purge time has
elapsed.

6.

Place thermostat or system switch in OFF position.
All operation should stop.

NOTICE

Room temperature must be below 85°F (29°C) for
hydronic heater to operate on PTAC's with unit­mounted controllers.

Hydronic valve is 24Vac normally open valve. Should
power be interrupted, valve will default to open
position.

Testing Completion For Cooling-Only PTAC's

If TEST jumper was set to test mode verify it is set back
to normal operation. See Figure 29, page 29.

NOTICE

Do not leave unit operating with TEST jumper in
TEST position. Prolonged operation with unit on test
mode will cause damage to internal components.

5.

Warmer room temperature desired, adjust thermostat
to a warmer temperature. The cooling mode will cease
and the compressor and outdoor fan will stop. The
indoor fan will switch off after the sixty-second purge
time has elapsed.

6.

Place thermostat or system switch in OFF position.
All operation stops.

NOTICE

Room temperature must be above 85°F (29°C) for
compressor to operate in cooling mode on PTHP's
with unit-mounted controllers.

7.

Place system switch in OFF position. All operation
stops.

Heating Operation — Heat Pump Units — Outdoor
Temperature Above 40°F (4°C)

1.

Place thermostat or system switch in HEAT position.

2.

Adjust thermostat to warmer temperature setting until
indoor fan start to run. Compressor and outdoor fan
turn on, warm air begins to ow.

3.

Unit starts to run and space gets warmer, adjust
thermostat to cooler temperature until compressor
cycles off.

4.

Warmer room temperature, adjust thermostat to
warmer temperature setting turning indoor and
outdoor fans, and compressor back on.

5.

Cooler room temperature is desired, adjust thermostat
to cooler temperature setting. Heating mode ceases
and compressor and outdoor fan stops. Indoor fan
switches off after sixty-second purge time has elapsed.

NOTICE

Room temperature must be above 85°F (29°C) for

Heat Pump PTHP's

NOTICE

Unit equipped with reversing valve energized for

compressor to operate in cooling mode on PTHP's
with unit-mounted controllers.

6.

Place thermostat or system switch in OFF position. All
operation stops.

cooling and de-energized in heating mode.

NOTICE

Cooling Cycle — Heat Pump Units

1.

Place thermostat or system switch in COOL position.

2.

Adjust thermostat to cooler temperature until indoor
fan starts running. Compressor and outdoor fan turn
on and cold air begins to ow from unit. Let unit
continue operating to cool room and remove humidity.

3.

Unit starts running and space gets cooler, adjust
thermostat to warmer temperature until compressor
cycles off.

4.

Colder room temperature desired, adjust thermostat
to cooler temperature setting, turning the compressor
and both fans back on.

The Right Fit for Comfort 32 P/N 240010328, Rev. A [10/15/2013]

Heat pump units are “Limited Range” equipped with
back-up electric resistance heat. Limited Range
heat pumps are designed to operate when outdoor
temperatures are between 75°F(24°C) and 40°F
(4°C) and with maximum indoor temperature of
85°F (29°C) . When outdoor temperature falls
below 40°F (4°C) unit will switch from heat pump to
electric resistance heat, or optional hydronic heat if
selected. Electric heat or hydronic heat will remain
heat source until outdoor temperatures rise above
50°F (10°C). RetroAire heat pumps (R_ _H) are
single-stage heating units. Electric heat and heat
pump will NOT operate simultaneously.

INSPECTION & START-UP

Auxiliary Heating Operation — Heat Pump Units

— Outdoor Temperature Below 40°F (4C°) —
Electric Option

1. Place

2.

3.

4.

5.

6.

thermostat or

Adjust thermostat to warmer temperature until indoor
fans start running and electric coil starts emitting heat.

After unit starts running and space warms, adjust
thermostat to cooler temperature until electric heater
turns off.

Warmer room temperature is desired, adjust
thermostat to warmer temperature setting, which
turns electric heater back on.

Cooler room temperature is desired,
thermostat to cooler temperature
electric heater turns off. Indoor fan switches off after
sixty-second purge time has elapsed.

Place thermostat or system switch in OFF position. All
operation stops.

system switch in HEAT position.

adjust
setting until

NOTICE

Room temperature must be below 85°F (29°C)
to energize heater on PTHP's with unit-mounted
controllers.

5 kW heat models only — in event limit switch
opens and de-energizes electric heat, reset limit switch
manually;

– Turn power off

– Remove control box cover.

– Locate limit switch.

– Push reset button in on the face of the switch. See

Figure 32, page 34.

– After unit starts running and space gets

warmer, hydronic valve closes and indoor fan
switches off after sixty-second purge time has
elapsed.

3.

After unit starts running and space gets warmer,
adjust thermostat to cooler temperature setting,
hydronic valve closes and indoor fan switches off after
sixty-second purge time has elapsed.

4.

Desired warmer room temperature,
thermostat to warmer temperature setting
opens hydronic valve and turns on indoor fan.

5.

Desired cooler room temperature, adjust thermostat to
cooler temperature setting. Hydronic valve closes and
indoor fan switches off after sixty-second purge time
has elapsed.

6.

Place thermostat or system switch in OFF position. All
operation stops.

adjust

, which

NOTICE

Room temperature must be below 85°F (29°C) for
hydronic heater to operate on PTHP's with unit­mounted controllers.
Hydronic valve is 24Vac normally open valve.
Should power be lost to unit, valve defaults to open
position.

Completion Of Testing For Heat Pumps

Operation testing is complete. If TEST jumper was set to
test mode verify it is set back to normal operation (see

Figure 28, page 29).

Auxiliary Heating Operation — Heat Pump Units —

Outdoor Temperature Below 40°F (4°C) — Hydronic
Option

1. Place

2.

P/N 2400103028, Rev. A [10/15/2013] 33 Made in USA

thermostat or

Adjust thermostat to warmer temperature.
Following occurs:

– Signal from processor board activates water or

steam valve.

– Motorized valve opens and allows hot water or steam

to run through coil.

– Indoor fans run, blowing air through hydronic coil

• Units equipped with Control, indoor fan and
motorized damper operation will be delayed until
hydronic coil reaches 100 ± 5°F (38 ± 3°C).

– Signal to water or steam valve continues until

room temperature rises above setpoint by 3°F
(2°C).

system switch in HEAT position.

MAINTENANCE

Monthly Inspection And Maintenance

!

WARNING

Electrical shock hazard — disconnect power to

To manually reset limit switch;

– Remove control box cover.
– Locate limit switch.
– Push reset button in. See Figure 32, page 37.

replacement PTAC/PTHP before servicing or
accessing control compartment. Failure to do so

Figure 32 Manual Reset Limit Switch

could result in severe personal injury or death.

Reset Button

NOTICE

It is illegal to discharge refrigerant into atmosphere.
Use proper reclaiming methods and equipment when
servicing RetroAire replacement PTAC/PTHP.

For optimum performance and reliability of your RetroAire
replacement PTAC/PTHP, manufacturer recommends
performing the following inspections and maintenance on
a monthly basis. Units that are installed in harsh or dirty
environments will require more frequent inspections and
maintenance.

Disconnect power to unit and remove access panels.

☐ Clean or replace indoor air lter.

☐ Vacuum return air grille surface.

☐ Inspect & clean chassis interior for rodent or insect

infestation.

☐ Clean & ush condensate drain pan and chassis

base pan.

☐ Verify condensate drain is functioning properly, if

applicable.

☐ Inspect refrigeration tubing, braze joints, for

signs of refrigerant leaks (oil residue). Repair if
necessary.

☐ Inspect indoor and outdoor coils. Verify dirt

or debris have not collected on ns. Clean if
necessary. Take care not to damage coil ns when
cleaning. Use n comb to straighten any bent
ns.

☐ Examine control box. Verify all wire connections

are secure.

☐ Verify indoor blower wheels and outdoor fan

blades are secured to their motor shafts.

☐ Verify dirt or debris have not collected on indoor

blower wheels and outdoor fan blades. Use
vacuum and soft brush to clean if necessary.

☐ Units with hydronic option installed, inspect

piping, braze joints, for signs of water leaks.
Repair if necessary.

☐ Clean exterior cabinet as desired with mild soap

or household cleaner.

☐ 5 kW heat models only — in event limit switch

opens and de-energizes electric heat, manually reset
limit switch.

The Right Fit for Comfort 34 P/N 240010328, Rev. A [10/15/2013]

Clean or replace return air lter as needed. Allowing
dust to collect on lter will cause unit to lose
efciency and eventually malfunction. Check lter
at least once month. Some environments may
require more frequent replacement, depending on
particulate in air stream.

If new air lter is needed for your RetroAire
replacement PTAC/PTHP, consult manufacturer for
availability and/or proper sizing.

Seasonal Start-Up And Maintenance

Perform complete mechanical check and maintenance
inspections at beginning of cooling and heating season.

Disconnect power to unit and remove access
panels.

• Perform inspections and maintenance dened in
"Monthly Start-Up And Maintenance."

• Visually check equipment. Look for changes in unit such
as damaged coils or evidence of extended wear on any
moving parts.

• Check for unusual odors, oil leaks, or stains on or
around coil and refrigerant lines. Presence of oil may
indicate potentially serious problem such as refrigerant
leak (example — burned motor windings, water, or

refrigerant).

• Verify base pan is clean.

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

*Note:

Button will pop
out when limit
switch opens.

Push in to reset.

NOTICE

MAINTENANCE

• Check fan motors and blower assemblies. Some units
may require drop of light oil to motors and/or bearing
assemblies (look for oil cups). Verify set-screws and
motor mounting hardware are secure.

• Brush and/or vacuum centrifugal fan blades and blower
cage assemblies.

• Inspect both indoor and outdoor coils. Use n comb
to straighten any damaged ns.
for proper operation.

Coils must be clean

Heat Pump Units — Temporary Emergency
Heating Mode

Heat pump failure, control board can be forced into electric
heat mode. This is temporary solution until heat

pump system is repaired.

NOTICE

Do not use solvent-based cleaner to clean coils,
some solvents will produce noxious odor when unit is
operating.

• Look for oil leaks or stains on or around all braze
joints and refrigerant lines. Presence of oil indicates
potentially serious problem (such as a refrigerant leak).

• Inspect and clean drain pan and drain line(s). Use of
anti-fungicide tablet to keep condensate system free
from bacterial contaminants is recommended.

• Verify unit pitch. Building and equipment may settle,
causing shift in direction of condensate ow. Unit
should pitch minimum of 5°(at least ½”) to outside
allowing for proper drainage.

Troubleshooting Sensors

1.

2.

• Locate circuit board in control section of unit.

• Locate terminals where outdoor sensor connects to
circuit board.

• Use small needle nose type pliers, disconnect one side
of sensor from circuit board. 2-stage thermostat will
provide Emergency heat.

• Circuit board sees this as outdoor coil freeze condition
energizing electric resistance heater on call for heat.

• See "Manual Reset Limit Switch". See Figure 34,
page 34 to reset limit switch if needed.

See Figure 33 for location of sensor connections to
control board.

If temperature response of indoor or outdoor sensor is
not correct, disconnect sensor from control board and
check sensor resistance. Replace sensor if resistance is
not close to values in Table 4.

• Check weep holes along rear ange of base pan to
ensure free of debris.

• Check seal around unit is not broken or damaged.

NOTICE

Air leaks make conditioned area uncomfortable
drafty or produce noise. Visually inspect foam gasket
between wall and unit, taking note of separation
between air inlet for condenser and condenser coil
discharge. These areas must be sealed off from
each other. If you experience poor cooling operation
or erratic operation, check for air recirculation at
condenser coil.

• Replace access panels and reconnect electrical power.

• Test unit operation.

Table 4 Sensor Resistance Values

Resistance, K ohms

77 (25°C) 10.0 K

50 (10°C) 19.9 K

35 (1.6°C) 30.0 K

30 (-1.1°C) 34.4 K

Figure 33 Sensor Connections On Control

Board

Indoor Sensor Connections

Outdoor Sensor Connections

P/N 2400103028, Rev. A [10/15/2013] 35 Made in USA

Troubleshooting

TROUBLESHOOTING

!

WARNING

Fire, explosion, and electrical shock hazard. Troubleshooting procedures shall be conducted by a qualied
technician. Improper installation could result in death or serious injury.

Symptom Suggestion

No heat or cooling

Thermostat calls for cooling, no
cool air is coming from unit.

Light on circuit board is blinking.

Circuit board light is blinking 3 or 4
times, there is no freeze condition.
(See Table 13, page 38)

Thermostat is satised, fan is still
running.

• Verify unit has power and thermostat is satised. If thermostat is not satised,
call your installing contractor or service contractor.

• Verify continuity between thermostat and unit. Verify 24 Vac is present across
terminals C and R.

• Check outdoor coil for dirt debris, remove any foreign material. Locate high
pressure switch reset button and push button.

• Some units are equipped with LCDI (Leakage Current Detection Interrupt) line
cord. Verify line cord is reset by pressing reset button at line cord plug.

Note: If evaporator fan is operational and above suggested procedures have been followed, and there is no
cooling being supplied by unit, contact trained heating and cooling professional.

Circuit board uses light for diagnostic purposes. Code determination:
1 blink = normal operation
2 blinks = compressor lockout (ASCT — Anti-Short Cycle Timer)
3 blinks = outdoor freeze condition
4 blinks = indoor freeze condition
5 blinks = simultaneous Y and W call (Straight cooling units only)

• Verify sensors have not been damaged.

• Remove sensor wires from control board and take resistance measurements,
compare to following sensor resistances. Indoor and outdoor coil sensor wires
and control board are labeled.

• Verify sensors are correctly wired.

77°F = 10KOhms
50°F = 19.9KOhms
35°F = 30KOhms
30°F = 34.4KOhms

• Thermostat set to Auto mode, once thermostat is satised, fan stays energized
for extra 60 seconds to purge unit of excess cool or warm air in plenum.

• If thermostat fan switch is set to ON, fan stays energized regardless of
thermostat being satised or not. To turn fan off turn unit off or turn thermostat
fan switch to AUTO.

Units equipped with electric heaters have temperature limit switch to prevent electric

Thermostat calls for heat, no heat
comes from unit.

heater from reaching unsafe temperatures. After calling for heat, heater is not
energized, check for continuity across limit. If limit is open, replace with equivalent
limit switch. Auto reset / Manual reset Switch (Requires trained professional)

• Verify unit has power or thermostat has been satised. If unit has power and
thermostat is satised, turn thermostat few degrees above room temperature.

• Verify LCDI line cord has not tripped.

Thermostat calls for heat while in
heat pump mode, heated air is not
coming from unit.

• Verify thermostat while in heat pump mode is not energizing O terminal.
RetroAire units are designed to work in heat pump mode when 24vac is present
across Y and C.

• Verify heat pump jumper on control board is jumping two pins labeled “HP”. See
control board jumper locations, Figure 28, page 29.

• Verify there are no freeze conditions. See "Circuit board light is blinking" above
for more information.

The Right Fit for Comfort 36 P/N 240010328, Rev. A [10/15/2013]

HYDRONIC HEAT PERFORMANCE

Table 5 R10 | R20 | R35 | R45 C/H hydronic heat * —

performance 104-101 (single row

coil)

P/N 2400103028, Rev. A [10/15/2013] 37 Made in USA

ELECTRICAL SPECIFICATIONS

Table 6 R10, R20, R35, R45, - 9.000 Btu Electrical Specications

Power Supply

Volt — 1–60

Volt Min RLA LRA FLA Hp FLA Hp Htr # Volt W HA TCA THA MCA MOCP Plug

115V 104 7.5 47 1.4 0.09 1.4 0.125 N/A N/A N/A N/A 10.5 N/A 12.4 15 5-15P

115V 104 8.0 45.6 1.4 0.09 1.6 0.125 N/A N/A N/A N/A 11 N/A 13.0 20 5-15P

208/ 230V 197 4.0 22.2 0.6 0.08 0.71 0.09 0 N/A N/A N/A 5.3 N/A 6.3 15 6-15P

208/ 230V 197 3.9 20 0.6 0.08 0.71 0.09

265V 240 3.32 18.8 0.67 0.08 0.71 0.09

Compressor

Indoor Fan

Motor

Outdoor Fan

Motor

Electric Heat Unit Electrical Ratings

0 N/A N/A N/A

208 1636 7.9 8.5 10.4

2

230 2000 8.7 9.3 11.5

208 2454 11.8 12.4 15.3

3

230 3000 13 13.6 16.9

208 3271 15.7 16.3 20.3

4

230 4000 17.4 18 22.3

208 4089 19.7 20.3 25.2

5

230 5000 21.7 22.3 27.8

0 N/A N/A N/A

2 265 2655 10 10.7 13.2 15

3 265 3983 15 15.7 19.5 20

4 265 5310 20 20.7 25.7 30 7-30P

5 N/A N/A N/A N/A N/A N/A N/A

Table 7 R10, R20, R35, R45 - 12,000 BTU Electrical Specications

N/A 6.2 15 6–15P

5.2

N/A N/A N/A N/A

4.7

15 6–15P

20 6–20P

25 6-30P

30 6-30P

7-20P

Power Supply

Volt — 1–60

Volt Min RLA LRA FLA Hp FLA Hp Htr # Volt W HA TCA THA MCA MOCP Plug

115V 104 10.8 53 1.4 0.09 1.6 0.125 0 N/A N/A N/A 13.8 N/A 16.5 25 5-20P

115V 104 12.7 63 1.4 0.09 1.25 0.125 0 N/A N/A N/A 15.4 N/A 18.5 30 5-20P

208/ 230V 197 5.6 29 0.6 0.08 0.71 0.09

265V 240 4.6 20 0.67 0.08 0.71 .09

Compressor

Indoor Fan

Motor

Outdoor Fan

Motor

Electric Heat Unit Electrical Ratings

0 N/A N/A N/A

208 1636 7.9 8.5 10.4

2

230 2000 8.7 9.3 11.5

208 2454 11.8 12.4 15.3

3

230 3000 13 13.6 16.9

208 3271 15.7 16.3 20.3

4

230 4000 17.4 18 22.3

208 4089 19.7 20.3 25.2

5

230 5000 21.7 22.3 27.8

0 N/A N/A N/A

2 265 2655 10 10.7 13.2

3 265 3983 15 15.7 19.5 20

4 265 5310 20 20.7 25.7 30 7-30P

5 N/A N/A N/A N/A N/A N/A N/A

N/A 8.3 15 6–15P

6.9

N/A 7.1

6.0

15 6–15P

20 6–20P

25 6-30P

30 6-30P

15

7-20P

The Right Fit for Comfort 38 P/N 240010328, Rev. A [10/15/2013]

ELECTRICAL SPECIFICATIONS

Table 8 R10, R20, R35, R45, - Cooling Capacity 15 Electrical Specications

Power Supply

Volt — 1–60

Volt Min RLA LRA FLA Hp FLA Hp Htr # Volt W HA TCA THA MCA MOCP Plug

208/
230V

265V 240 6 28 0.67 0.08 0.71 0.09

Compressor

197 7.4 33 0.6 0.08 0.71 0.09

Indoor Fan

Motor

Outdoor Fan

Motor

Electric Heat Unit Electrical Ratings

0 N/A N/A N/A

208 1636 7.9 8.5 10.4

2

230 2000 8.7 9.3 11.5

208 2454 11.8 12.4 15.3

3

230 3000 13 13.6 16.9

208 3271 15.7 16.3 20.3

4

230 4000 17.4 18 22.3

208 4089 19.7 20.3 25.2

5

230 5000 21.7 22.3 27.8

0 N/A N/A N/A

2 265 2655 10 10.7 13.2

3 265 3983 15 15.7 19.5 20

4 265 5310 20 20.7 25.7 30 7-30P

5 N/A N/A N/A N/A N/A N/A N/A

N/A 10.6 15 6–15P

8.7

N/A 8.9

7.4

15 6–15P

20 6–20P

25 6-30P

30 6-30P

15

Table 9 R10, R20, R35, R45 - Cooling Capacity 18 Electrical Specications

Power Supply

Volt — 1–60

Volt Min RLA LRA FLA Hp FLA Hp Htr # Volt W HA TCA THA MCA MOCP Plug

208/
230V

265V 240 N/A N/A N/A N/A N/A N/A

Compressor

197 8.3 44 0.6 0.08 0.71 0.09

Indoor Fan

Motor

Outdoor Fan

Motor

Electric Heat Unit Electrical Ratings

0 N/A N/A N/A

208 1636 7.9 8.5 10.4

2

230 2000 8.7 9.3 11.5

208 2454 11.8 12.4 15.3

3

230 3000 13 13.6 16.9

208 3271 15.7 16.3 20.3

4

230 4000 17.4 18 22.3

208 4089 19.7 20.3 25.2

5

230 5000 21.7 22.3 27.8

0 N/A N/A N/A

2 265 2655 10 10.7 13.2 15

3 265 3983 15 15.7 19.5 20

4 265 5310 20 20.7 25.7 30 7-30P

5 N/A N/A N/A N/A N/A N/A N/A

N/A 11.7 15 6–15P

9.6

N/A N/A N/A N/A

N/A

15 6–15P

20 6–20P

25 6-30P

30 6-30P

7-20P

7-20P

P/N 2400103028, Rev. A [10/15/2013] 39 Made in USA

ELECTRICAL SPECIFICATIONS

The Right Fit for Comfort 40 P/N 240010328, Rev. A [10/15/2013]

NOTES

P/N 2400103028, Rev. A [10/15/2013] 41 Made in USA

NOTES

The Right Fit for Comfort 42 P/N 240010328, Rev. A [10/15/2013]

ECR International Inc

2201 Dwyer Avenue

Utica, NY 13501

e-mail: [e-mail]

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