Friedrich WallMaster PTAC User manual

920-087-02 (9-03)
WallMaster® PTAC
Packaged Terminal Air Conditioners & Heat Pumps
• Standard
• Remote Thermostat
• Seacoast Protected
Installation & Operation Manual

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Unit Components.........................................................................................................................................................................................2
P-Series Announcement/Model Number Code............................................................................................................................................3
Installation Recommendations....................................................................................................................................................................4
Drain Kit Installation................................................................................................................................................................................5-6
Wall Sleeve Installation............................................................................................................................................................................ 7-8
Deep Wall Installation..................................................................................................................................................................................9
Standard Grille Installation........................................................................................................................................................................10
Installation Checklist .................................................................................................................................................................................11
Electrical Rating Tables..............................................................................................................................................................................11
Chassis Installation ............................................................................................................................................................................. 12-13
Standard Unit Operations ..........................................................................................................................................................................14
Temperature Limiting Thermostat ..............................................................................................................................................................14
Heating Control (Heat Pumps & Emergency Heat)..................................................................................................................................... 15
Fan Cycle Switch....................................................................................................................................................................................... 15
Fresh Air Vent Control................................................................................................................................................................................ 15
Air Discharge Grille ....................................................................................................................................................................................16
Start-up Checklist......................................................................................................................................................................................16
Appendix A: Remote Thermostat Wiring ...............................................................................................................................................17-18
Appendix B: Electrical Wiring for 265 V Models........................................................................................................................................ 19
Routine Maintenance................................................................................................................................................................................ 20
Basic Troubleshooting Techniques .............................................................................................................................................................21
Accessories .........................................................................................................................................................................................22-23
Warranty ................................................................................................................................................................................................... 24
Table of Contents
Typical Unit Components
Front cover
Chassis
Wall sleeve
Outdoor grille

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Announcing the Friedrich P-Series Packaged Terminal Air Conditioner.
A new approach to reliability and efciency. A totally redesigned Friedrich PTAC.
Thank you for your decision to purchase the newly designed Friedrich Packaged Terminal Air Conditioner
(PTAC). We are condent that you will nd this unit a quiet and efcient example of Friedrich reliability.
This Installation and Operation Manual has been designed to insure maximum satisfaction in the performance
of your unit. For years of trouble-free service, please follow the installation instructions closely. We cannot
overemphasize the importance of proper installation. We have added new information to the basic instructions
to help you achieve success.
Remember, proper installation is not difcult but it is essential.
Model Number Code
P H 07 K 3 S A 1
Series
P = P series
System
X= Accessory
E= Cooling with or
without electric heat
H =Heat Pump with
Auxiliary Heat
Nominal Cooling Capacity
07 = 7,000 Btuh
09 = 9,000 Btuh
12 = 12,000 Btuh
15 = 15,000 Btuh
Engineering Digit
Design Series
Options
S = Standard
R = Remote Thermostat
C = Seacoast Protection
X = Remote Thermostat and
Seacoast Protection
Nominal Heater Size
(@ 230V or 265V)
0 = No Heater
2 = 2.5 KW
3 = 3.4 KW
5 = 5.0 KW
Voltage
K = 230/208V - 1 Ph. - 60 Hz.
R = 265V - 1 Ph. - 60 Hz.
Please read this manual thoroughly prior to equipment installation or operation. It is the installer’s responsibility
to properly apply and install the equipment. Installation must be in conformance with the NFPA 70-2002
National Electric Code or current edition and Universal Mechanical Code current edition and applicable local
or national codes.

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PTAC Installation Recommendations
For proper PTAC unit performance and maximum operating life please refer to the minimum installation clearances below:
The above suggestions are for reference only and do not represent all possible installations. Please contact the factory
for information regarding affects of other installation arrangements. By following these simple recommendations you
can be condent that your Friedrich PTAC will provide years of worry free operation.
PTAC
SHRUB
POLE
FENCE OR WALL
PTAC PTAC
TYP. BUILDING ( PLAN VIEW )
CONDENSING UNIT
12"
36"
36"
36"
36" MIMUMUM, MAJOR
OBSTRUCTIONS
12" MINIMUM, MINOR
OBSTRUCTIONS
Figure 2
PTAC units should be installed
no closer than 12" apart when
two units are side by side. If
three of more PTAC units are to
operate next to one another allow
a minimum of 36" between units.
Also, a vertical clearance of 60"
should be maintained between
units installed.
Figure 1
BETWEEN PTACs
THREE OR MORE PTACs
BUILDING ELEVATION
ADJACENT 36" MINIMUM
6" MINIMUM FROM GRADE
GROUND FLOOR PTACs
TWO ADJACENT
PTACs 12" MINIMUM
WINDOW
TYP.
VIEW: OUTSIDE
60" VERTICAL MIMUMUM
12" 6"
36"
60"
For PTACs on the ground oor or anytime obstructions are present, use the following guidelines:
• For minor obstructions
such as lamp poles or small
shrubbery a clearance of
12" from the outdoor louver
should be maintained.
• For major obstructions such
as a solid fence, wall or
other heat rejecting device
like a condensing unit, a
minimum distance of 36"
should be kept.

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Installation Instructions PXDR10 Drain Kit
Internal Drain (optional for new construction)
NOTE: If installing an internal drain, you MUST install a drain kit on
the wall sleeve before the wall sleeve is installed.
1. Refer to Figure 3 below and locate the drain within the
"Primary" area for best drainage. Maintain at least a 1/2"
clearance from the embossed area.
2. Using the mounting plate with the 1/2" hole as a template,
mark and drill two, 3/16" mounting holes and a 1/2" drain
hole.
3. Remove the backing from the gasket and mount it on the at
side of the mounting plate. (See Figure 4.) Insert the drain
tube through the hole in the gasket and mounting plate so
the tube ange will be against the wall sleeve.
4. Position the assembly beneath the drilled holes and secure
it with #10-24 x 1/2" machine screws and lock nuts provided.
Seal the tops of the screws with silicone caulking.
5. Use 1/2" I.D. copper tube, PVC pipe, or vinyl hose (obtained
locally) to connect the internal drain tube to the drain system
in the building.
6. Referring to Detail A on page 6, locate and assemble the
(2) two cover plates and gaskets over the drain holes at the
rear of the wall sleeve. Attach them with the #10 sheet metal
screws provided. Make certain that the four overow slots at
the rear of the wall sleeve are not blocked (See drawing of
the back of the sleeve on page 6).
7. If a deep wall extension (PXWE) is used, after installing the
eld supplied ashing, caulk as required. Be sure to caulk
around the ashing and the wall sleeve where the hole was
drilled for the drain tube.
3"
7.6 cm
Secondary area
Primary area - no foam insulation
If the drain must be located in the
secondary area, the foam insulation
must be cut away and removed to
allow access to the drain.
Screw
Wall sleeve
Gasket
Mounting plate
Nut
Drain tube
Drain Kit Location and Installation
Figure 3
NOTE: Determine whether drain will be located within the wall, on the indoor side, or will drain to the exterior of the building. Follow
appropriate instructions below depending on your particular type of installation.

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External Drain (for new construction or unit replacement)
When using an external drain system, the condensate is removed through either of two drain holes on the back of the wall sleeve. Select
the drain hole which best meets your drainage situation and install the drain kit. Seal off the other with a cover plate.
Drain Kit Installation
Figure 4
Foam gasket
Mounting plate
Foam gasket
Mounting plate
1/2" O.D. tube
#10 sheet metal screws
NOTES:
The large ange on the mounting plate is positioned at the bottom of the sleeve facing toward the sleeve. The drain tube must be rotated to a horizontal
position to allow for the wall sleeve to be installed into the wall. Once the wall sleeve is installed, return the drain tube to a downward angle.
Drain Tube Installation
1. Peel the backing tape off the gaskets and apply the sticky
side to one cover plate and one mounting plate as shown
in Details A and B.
2. Place the drain tube through the gasket and the mounting
plate with the ange toward the wall sleeve.
3. Attach the drain tube assembly to one of the two drain
holes at the rear of the wall sleeve. The large ange on
the mounting plate is positioned at the bottom of the sleeve
facing toward the sleeve, Detail B. When the drain tube is
positioned at the desired angle, tighten the screws.
NOTE: If the wall sleeve has not been installed, the drain tube must
be rotated to a horizontal position until after the sleeve
is installed. Tighten the mounting plate screws when the
tube is in the proper position. Make certain that the four
overow slots at the rear of the wall sleeve are not blocked.
(See the drawing below.)
Cover Plate Installation
4. Mount the foam gasket to the cover plate. Using two #10 x
1/2" sheet metal screws (provided), attach the cover plate
to the remaining drain hole. Make certain the large ange
on the plate is positioned at the bottom of the sleeve.
5. Discard the additional cover plate, gasket, machine screws,
and locknuts.
PXDR1O
QUANTITY
2
1
1
3
4
2
2
DESCRIPTION
COVER PLATES
MOUNTING PLATE
DRAIN TUBE
MOUNTING PLATE GASKETS
#10 X 1/2" MOUNTING SCREWS
10-24 X 1/2" MACH. SCREWS
LOCKNUTS
DETAIL A
DETAIL B

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Wall Sleeve Installation Instructions (PXWS)
NOTE: Insure that the unit is only installed in a wall structurally adequate to support the unit including the sleeve, chassis and accessories.
If the sleeve projects more than 8" into the room, a subbase or other means of support MUST be used. Please read these instructions
completely before attempting installation.
For Deep Wall Installation See Section II
The following instructions apply ONLY to walls less than
13 1/4" in depth.
1. From inside the building, position the wall sleeve in the opening
and push it through the wall so it protrudes at least 1/4" on the
outside, note Figure 5.
2. Position the wall sleeve with a slight tilt towards the outside to
facilitate condensate drainage. It should be level side-to-side
and the front should be 1/4 bubble higher than the back. DO
NOT allow any pitch toward the inside.
Electrical shock hazard.
Turn electric power OFF at the fuse box or service panel
before making any electrical connections and ensure a
proper ground connection is made before connecting line
voltage. Failure to do so can result in property damage,
personal injury and/or death.
Typical Wall Sleeve Installation
Figure 5
42"
(107.3 cm) min.
50" (127 cm) min.
10"
(25.4 cm)
max.
16 "
(41.3 cm)
13
"
(34.9 cm)
Lintel to support masonry walls
Electrical receptacle
Wall opening Wall sleeve Insulation Smooth side of screw
clip facing into room
Electrical receptacle
Insulation

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3. Drill two 3/16" holes through each side of the sleeve
approximately 4" from top and 4" from bottom of sleeve. Screw
four #10 x 1" screws (included) or appropriate fasteners for your
installation, through the holes in the sides of the wall sleeve.
4. Apply sealant around the wall sleeve where it projects through
the inside and outside wall surfaces. Apply the sealant to the
screw heads or the tops of the fasteners used in Step #3.
NOTE: When sealing the sleeve on the outside of the building,
be careful NOT to let the sealant block the two condensate
drain holes or the four overow slots at the bottom ange of
the sleeve.
Lintel Installation
Figure 7
NOTE: Construct wall opening to comply with all applicable
building codes.
Main studs
Jack studs
Main studs
Jack studs
Lintel
Mounting screw holes
No holes in bottom of wall
sleeve unless drain kit is used
5. If the chassis and exterior grille are to be installed later, leave the
weatherboard and center support in place, otherwise remove
and dispose of them.
6. Provide a support lintel if the wall sleeve is installed in a concrete
or masonry wall. (See Figure 7.)
13 "
(35 cm)
A
B
"
(6.4 cm)
min.
Wall
Dimensions
Figure 6
Dimension*
A
Allow
for wall
nishing
B
Allow for oor nishing
(Minimum) Min. Max
No Accessories "
(6.4 mm)*
"
(6.4 mm) ---
With Subbase 1"
(4.5 cm)
3"
(8.9cm)
5"
(12.7cm)
With Lateral Duct "
(1.9 cm)
"
(6.4 mm) ---
* If more than one accessory is to be used, use the maximum
dimension. If the wall thickness is more than 13" (35cm) -
(A + " [6.4 mm]), a sleeve extension must be used.

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If the wall is thicker than allowed in the notes in Figure 6, a sheet
metal wall sleeve extension and ashing MUST be used.
Installation Instructions for the PXWE – 4" Wall Sleeve
Extension
The following points MUST be considered when installing a wall
sleeve extension:
1 Provision must be made to direct excess condensate from
the back of the wall sleeve into the extension then outside
the building or to a drainage system.
2. Air bafes must be mounted to properly direct air ow to and
from the condenser.
3. The wall sleeve extension design must allow for the proper
mounting of the grille.
4. Caulking is required at all sites where condensate or external
water could potentially inltrate into the building.
5. Fabricate and install metal ashing in wall to serve as a drip
panel. Refer to drawing for more information.
6. Condensate notches and overow slots must be kept clear
of sealant and gaskets so condensate can ow freely into the
wall sleeve extension.
NOTE: Improper fabrication or installation of a wall sleeve extension
will impair PTAC performance.
Extension Installation
Secure the wall sleeve extension to the wall sleeve before installing
it in the wall. Refer to Figure 8 for a guide for fabrication of a
condensate drip panel. The panel MUST extend the full depth of
the wall sleeve and the wall sleeve extension.
Pay particular care in sealing and caulking the panel where it makes
contact with the wall sleeve (see Figure 8). After installation in the
wall, secure with fasteners through the sides. Use a good grade
of silicone sealant around the sleeve extension. Seal all exposed
screw heads. When the installation is complete, the outside grille
should be attached to the wall sleeve extension.
Section II — Deep Wall Installation (PXWE)
Wall Sleeve Extension Sealant Locations
IMPORTANT NOTE: The silicone bead MUST extend 3"
up the side of the two anges to prevent condensate
from leaking.
Wall Sleeve Extension, 42" X 16" Frame, 20 gauge minimum, painted or aluminium
Outside Edge
Insulation
Wall Sleeve
Air Bafes
Condensate
Notches (4)
Condensate
Drip Panel
(Field
Supplied)
Sealant inside (4) bottom corners
Drip
Edge
Width of Wall
Figure 8
PXWE Wall Sleeve
Extension

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Plastic handles Plastic
grommets
1. Remove the center support and weatherboard if still installed
in the sleeve.
2. Insert six plastic grommets into the grille openings from the
outside of the grille as shown in Figure 9.
3. Insert two #8 x 3/8" sheet metal screws (provided) in the top
two outside edge plastic grommets, and tighten them half way
into the grommets.
4. CAUTION: Bodily injury can be caused by grilles falling from
a building during installation. It is recommended that a safety
line be attached to the grille and an anchor point inside the
building during installation.
Installation Instructions Model PXGA Standard Grille
5. Grasp the grille by the attached plastic handles. Position it with
the condensate drain knockouts facing down. From inside the
building, maneuver the grille through the wall sleeve and pull
toward you until the screw heads are inserted into the keyhole
slots at the top of the wall sleeve. Tighten the two screws
completely.
6. Insert the remaining screws into the remaining holes and
tighten securely.
Figure 9
Description
Stamped Aluminum Grille
Plastic Grommets
#8 x 3/8" Sheet Metal Screws
Quantity
1
6
6
PXGA
Standard Grille
Figure 9
Wall sleeve
Weatherboard
Center support

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B. Electrical Rating Tables
All 230/208 volt units are equipped with power cords. See Appendix B on page 19 for wiring instructions on 265V units.
NOTE: Use Copper Conductors ONLY. Wire sizes are per NEC, check local codes for overseas applications.
A. Installation Checklist
o
Inspect all components and accessories for damage
before and after installation.
o
Remove the cardboard wall sleeve support and grille
weatherboard.
o
Check for proper wall sleeve installation in accordance
with the wall sleeve installation instructions.
o
Check installation of the wall sleeve foam gasket.
o
Check for a subbase kit or other means of structural
support which is required for ALL installations projecting
more than 8" into room.
Table 1 250 V Receptacles and Fuse Types
AMPS 15 20 * 30
RECEPTACLE
MANUFACTURER PART NUMBERS
Hubbell 5661 5461 9330
P & S 5661 5871 5930
GE GE4069-1 GE4182-1 GE4139-3
Arrow-Hart 5661 5861 5700
TIME-DELAY TYPE FUSE 15 20 30
(or HACR circuit breaker)
Table 2 Recommended branch circuit wire sizes*
Nameplate
maximum circuit breaker size
15
20
30
AWG – American Wire Gauge
* Single circuit from main box
** Based on copper wire, single insulated conductor at 60°C
Electric shock hazard.
Turn off electric power before service or installation.
All electrical connections and wiring MUST be installed by a qualied electrician and
conform to the National Electrical Code and all local codes which have jurisdiction.
Failure to do so can result in property damage, personal injury and/or death.
Wire Size Use ONLY wiring size recommended for single outlet branch circuit.
Fuse/Circuit
Breaker
Use ONLY type and size fuse or HACR circuit breaker indicated on unit’s rating plate. Proper current protection to the unit is the responsibility of the
owner. NOTE: A time delay fuse is provided with 265V units.
Grounding
Unit MUST be grounded from branch circuit through service cord to unit, or through separate ground wire provided on permanently connected units.
Be sure that branch circuit or general purpose outlet is grounded. The eld supplied outlet must match plug on service cord and be within reach of
service cord. Refer to Table 1 for proper receptacle and fuse type. Do NOT alter the service cord or plug. Do NOT use an extension cord.
Receptacle The eld supplied outlet must match plug on service cord and be within reach of service cord. Refer to Table 1 for proper receptacle and fuse type.
Do NOT alter the service cord or plug. Do NOT use an extension cord.
Wire Sizing Use recommended wire size given in Table 2 and install a single branch circuit. All wiring must comply with local and national codes. NOTE: Use
copper conductors only.
HACR – Heating, Air Conditioning, Refrigeration
* May be used for 15 Amp applications if fused for 15 Amp
NOTE: 265 volt units are hard wired.
o
Install the recommended Condensate Drain Kits for
complete condensate removal.
o
Ensure that the chassis is installed in a 16" high x 42" wide
wall sleeve that is no deeper than
13 3/4". A bafe kit is required if the sleeve exceeds that
depth.
o
Ensure that drapes, bed, bedspread, furniture, etc. DO
NOT block either return or discharge air grilles.
o
Inspect the condenser air inlet and outlet for any
obstructions (shrubbery, etc.)
AWG Wire size**
14
12
10

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Wall sleeve
Weatherboard
Center support
Section III – Chassis Installation
1. Remove the weatherboard and center support from
the sleeve (if still in place). Be sure an outdoor grille is
attached.
* Check to be sure the wall sleeve, extension (if used), grille, and drain kit are installed properly before
chassis installation
2. Remove the front cover contained in a protective plastic bag
from chassis. Remove the bag and dispose of it properly.
If the control door is not installed, follow these steps:
• From the front of the cover, slide the right control door pin into
the hole on the right side of the front cover. Slide the left door
pin into the hole on the left side of the front cover opening and
snap it into place.
3. Remove the two chassis shipping brackets from the ends of
the shipping pallet.
NOTE: To avoid breaking the door or hinge pins, do not apply
excessive force when installing
Suffocation hazard
Keep bag away from babies and children.
Do NOT use in cribs, beds or playpens. Destroy
immediately after opening. This bag is NOT a toy.
Failure to do so can result in personal injury and/or death
IMPORTANT: Use a wall sleeve adapter kit (PXSE) if
installing a P-Series chassis in a T-Series sleeve.
Compressor
Chassis
shipping bracket
Shipping pallet
Control
Door
Pins
Front Panel
IMPORTANT: When installing a Friedrich P-Series PTAC into an
existing sleeve, it is important to ensure that the unit is installed
completely. Inspection of the air seal between the condenser air
bafes and around the indoor mounting ange is recommended. In
some cases additional gaskets or bafing may be required.
12
3

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4. Center the chassis in the pre-installed sleeve and carefully
push the chassis until the chassis ange and gasket contact
the sleeve ange.
If a remote thermostat is to be installed, proceed to Appendix A, Step 1. For a 265 V unit, proceed to Appendix B, Step 1.
NOTE: If the unit is mounted ush to the oor, the service cord
MUST be rerouted at the bottom of the front cover on the side closest
to the receptacle. A notch MUST be made in the front cover side
where the cord exits the unit. It is the responsibility of the installer
to create an exit notch. See diagram 8 for suggested opening size
and placement.
7. If the lters are not already installed in tracks in the plastic
cover, slide them into place.
8. Plug the cord (if applicable) into the appropriate receptacle.
Extra cord may be coiled inside the front cover behind the
return air grille. Restore power to the unit.
5. Locate the four #10 x 1" chassis mounting screws. Tighten
the screws into the clips - adjacent to the alignment dimples
on the mounting brackets on the wall sleeve ange (two per
side).
6. Install the front cover assembly (including the discharge grille)
by placing the top of the cover onto the 90° angle bracket
along the top of the chassis. Rotate the bottom into place
and insert the included thumb screws into the slots located
To remove the front cover, remove the thumbscrews at
the bottom back corners of the cover (or sides). Pull the
bottom end forward and lift it up to clear the L bracket
across the top of the chassis.
Copper refrigerant tubes are NOT handles.
Do NOT use tubing to lift or move chassis.
Not to scale
Wall sleeve
Wall sleeve flange
Chassis flange
and gasket
4
6
7
8
at the bottom back corners of the cover. Tighten them into
the quick nuts located on the chassis to secure the cover. If
the unit has been placed such that there is no room to insert
the thumbscrews from the bottom, request a Side Mounting
kit (Part No. PXSM) from Friedrich. Locate the service cord
or conduit in the notch at the bottom right of the front cover.
Chassis
mounting screw
Screw clips
Chassis
flange
5

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C. Standard Unit Operation
Rotate the temperature dial in small increments in the
warmer or cooler direction. Moving the dial more than
1/4" at a time may overcompensate and result in an
extreme hot or cold situation.
• If a remote thermostat is installed, see Appendix A,
page 18-20.
Operation
Control
Temperature
Low and High Cool
Low and High Heat
Fan Only
Rotary Switch Operation
The full-range thermostat maintains room
temperature at the desired setting in both
the heating and cooling modes. Turn the dial
counterclockwise for warmer and clockwise
for a cooler temperature.
Operates the unit on cooling. Cooling will not
begin if the room temperature is below 60°F.
Operates the unit on heating. Some models
do not provide this selection.
Circulates air within the room at high fan
speed only. No heating or cooling functions
are active.
Remove
knobs
Control panel
Adjustment
limiting
screws
1. Set the thermostat knob to center of dial.
2. Remove the four screws holding the control panel. Pull up on
the thermostat knob and remove it.
3. Locate the two temperature limiting screws. These screws
are factory installed for a maximum temperature range of 60°-
90°F. Each hole in the dial plate represents approximately a
4° change from the adjacent hole.
4. To adjust the temperature range, move the temperature
limiting screws to the desired location.
5. Replace the knob when the desired range has been set.
6. Replace the control panel.
D. Temperature Limiting Thermostat
Standard Unit Control Panel
COOLING ONLY MODEL HEAT/COOL MODEL
EXAMPLE: To set a maximum temperature range of approximately 64° to 86°F, move the screws to the locations shown in the diagram at right.

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E. Heating Control (heat pumps and emergency heat operation)
F. Fan Cycle Switch
The fan cycle switch is located behind the decorative front cover
below the control panel. It is designed to operate the fan either
continuously or intermittently with the compressor or heating
elements. When the switch is in the CONTINUOUS position, the
fan will run continuously at the selected speed when the unit is
turned on. With the fan cycle switch in the CYCLE position, the fan
will run only when the compressor or heating elements cycle on.
NOTE: Emergency heat operation only. In the event of a compressor malfunction in the heat pump mode, turn the screw to the extreme
counterclockwise emergency heat position. The heater will then cycle using electric resistance heat only. Note that in the emergency
heat position, the compressor is locked out, disabling both heat pump and cooling operations. CALL A SERVICE PERSON. DO NOT
FORGET TO RETURN THE CONTROL TO ITS ORIGINAL POSITION AFTER REPAIRS ARE MADE OR THE COMPRESSOR WILL
NOT COME ON IN COOLING MODE.
NOTE: Heat pump models only. Heat pump equipped models use
backup electric resistance heating coils. At extremely low, outdoor
ambient temperatures, the heat pump is automatically disabled and
the unit operates solely on electric resistance heat.
This control is located behind the decorative front cover and is found
on the right side panel of the chassis. Its function is to allow you to
set the temperature range in which the heat pump operates. This
control switches the unit heat operation between heat pump and
electric resistance heat based on the outdoor ambient temperature.
These change-over temperatures are based on the settings of the
control. The factory setting is at the one o'clock position. If you wish
to change the factory set point, insert a at-bladed screwdriver into
the slot and turn counterclockwise to increase the changeover set
point, or clockwise to decrease it.
NOTE: The factory set point is recommended for optimum
performance.
NOTE: It is recommended that this switch be set in the continuous position for maximum comfort and temperature control.
The vent control lever is located behind the front cover on the left
side of the unit. The unit is shipped in the closed position with a
locking screw in place. The screw must be removed to operate the
lever. When the lever is back, (OPEN), outside air is mixed with
indoor air. When the lever is forward, (CLOSED), no outside air is
admitted into the room and room air is recycled through the unit.
G. Fresh Air Vent Control
NOTE: The vent should remain closed for peak operating efciency.

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H. Air Discharge Grille
The air discharge grille can be redirected to blow air either straight up or at an angle into the room. To change the airow direction, remove
the front cover, locate and remove the six grill retaining screws. Reverse the ends of the grille and refasten the grille to the cover.
I. Start-up Checklist
o
Inspect all components and accessories for
damage before and after installation.
o
Check installation for compliance with all national
and local codes and ordinances.
o
Read and follow all manufacturer's installation
instructions.
o
Check that circuit breaker(s) and electrical wire
sizes are correct. If the unit is supplied with a
power supply cord, insure that it is stored properly.
o
Check the condensate water drain outlet(s) to
make sure they are in compliance with all national
and local codes, that they are adequate for the
removal of condensate water, and that they meet
the approval of the end user.
o
Strictly follow installation instructions concerning
clearances around the unit.
o
Secure components and accessories, such as the
control door and front cover.
o
Check the unit air lter, condenser coil and
evaporator coil for any obstructions.
o
Check for proper operation of all components.
o
Instruct the owner or operator of the units operation,
and the manufacturer's
recommended routine maintenance schedule.
NOTE: It is highly recommended that a maintenance
schedule log book be prepared for recording
the dates and times of service.
o
Operate the unit for twenty minutes. Record
the unit's indoor/outdoor intake and discharge
temperatures, amperage draw, and power voltage.
o
Assemble the Warranty Certicate, the Operation
and Installation Manual, all accessory installation
instructions and the name, address and telephone
number of the Authorized Friedrich Warranty Service
Company in the area for the owner or operator.
NOTE: Units are to be installed, inspected, and checked by qualied service personnel only.
Moving parts hazard.
Turn off electric power before
servicing this component.
Failure to do so can result in property
damage, personal injury and/or death.

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Typical PTAC/PTHP unit
Used for PTHP only
Wall thermostat
NOTE: It is the installer's responsibility to ensure that all control wiring connections are made in accordance with the installation instructions.
Improper connection of the thermostat control wiring and/or tampering with the unit's internal wiring can void the equipment warranty and
may result in property damage, personal injury or death. Other manufacturer's PTACs and even older Friedrich models may have different
control wire connections. Questions concerning proper connections to the unit should be directed to the factory.
Remote Thermostat Selection & Wiring Guidelines for
Packaged Terminal Air Conditioners
Follow the instructions and recommendations of the thermostat
manufacturer for installation and wiring. Do not use a conventional
heat pump thermostat with emergency electric heat selection for
our heat pump units. Our units make an automatic decision about
turning on electric heat if the heating demand cannot be met by the
heat pump due to low outdoor temperatures.
Unit Terminal Board
* A-Sufx models do not have a "C" terminal
Simplied Wiring Example
Thermostat Terminals
For Non-Heat Pump equipped units: A single stage cooling and heating thermostat is required. Terminal "G" should be
energized whenever a call for heating or cooling is made. Typically a heat/cool thermostat designed for use with electric heat
systems will meet this requirement.
Honeywell Thermostat Terminal Designation:
Appendix A: Remote Thermostat Unit Installation
TERMINAL LETTER OPERATION CONTACT MADE
Y Cooling During call for cooling.
W Heating During call for heating.
G Fan Continuous if the slider is in the "Fan" position, otherwise, intermittent.
C Common Terminal For thermostats requiring a common terminal
R 24 V to the thermostat Directly from the transformer
B (Heat Pump units Only) Reversing Valve Made continuously during call for heating.
Manual Changeover Thermostat
For Heat Pump equipped units: A single stage, heat/cool
thermostat with a terminal for a reversing valve operation is required.
Terminal "B" should be continuously energized in the heat mode
and terminal "G" should be energized whenever there is a call for
heating or cooling. Typically, a heat/cool thermostat designed for
use with electric heat systems will meet the above requirements.
NOTE: This unit is designed for use with a single stage thermostat only. Improper application of the thermostat may result in property
damage, personal injury or death.

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Appendix A (continued)
The simplified connection diagram at left shows the factory
congured wiring set for 240V operation. If you are going to use
208V exclusively, switch the two (2) black wires on the 240V post
of the primary side of the transformer to the 208V post. This will
ensure correct secondary (low) voltages for the unit. This is only
required on remote thermostat units.
Remote Thermostat 208V Operation
Remote Thermostat Unit Operation
These units are controlled by the use of a remote thermostat that will
cycle the unit to maintain desired room temperature. See thermostat
operating instruction sheet for details.
The fan speed switch controls high and low speed fan operation. It is
located on the control panel and is independent of the thermostat.
Auto Changeover Thermostat
A single stage heat/cool thermostat with auto changeover is needed.
The wiring scheme is the same as the manual thermostat.
Connection Diagram
208V 60HZ
L2 L1
SMOOTH RIBBED
G
240V
208V
24V
COM
RED
R
Y
BK
SECONDARY
TRANSFORMER
PRIMARY
Remote Thermostat Installation
Follow Steps 1 through 5 (pages 12 and 13), then:
6. Locate the terminal strip on the front of the control box (See
Figure 9). Attach the thermostat subbase wires (eld supplied)
to the appropriately labeled terminals in accordance with the
wiring diagram on the side of the chassis.
7. Carefully route the wires alongside the conduit or service cord.
Attach the other end of the wires to the appropriate terminals
on the thermostat subbase. See the thermostat directions for
proper wiring and mounting of the thermostat.
Terminal Strip Location
Figure 10
Remote Control Unit Remote Control Unit
OFF
ON
C W Y R G B
CAUTION
If the supply voltage is 208V, the low
voltage transformer MUST be wired for
208V operation. Failure to do so will result
in lower control voltages to the unit and can
damage low voltage components.

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Appendix B: Electrical Wiring for 265 Volt Models
1. Remove the four control box retaining screws (A) and open
the control box.
2. Pull the chassis power lead wires (B) (located on the bottom-
right side of the control box) through the plastic bushing so
they are located inside the control box.
3. Remove the plastic bushing.
4. Route the line voltage power leads through the hole where
the plastic bushing was located, and secure its conduit (use a
1/2" straight conduit connector, with the locknut on the inside
of the control box.)
NOTE: It is recommended that the PXSB subbase assembly, the PXCJ conduit kit and the PXDS disconnect switch be installed on all
hardwired units. If installing a ush-oor mounted unit, make provisions for all the line voltage power leads and conduit to be removed for
ease of maintenance and service to the chassis.
Line Voltage Connections
Inside back of control
panel cover.
Figure 11
5. Make the appropriate electrical connections within the control
box, then secure the box on the chassis. Detailed instructions
are included with the installation instructions for the conduit
kit (PXCJ).
6. Route the line voltage power conduit from the control
box straight down the right front to the bottom side of the
chassis. This will allow the front cover to be installed without
interference with the electrical conduit.
To install the line voltage power leads and conduit to the chassis, follow the instructions below.
Screws
Screws
Fuse holder

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J. Routine Maintenance
1. Clean the unit air intake lter at least every 300 to 350 hours
of operation. Clean the lters with a mild detergent in warm
water and allow to dry thoroughly before reinstalling.
2. The indoor coil (evaporator coil), the outdoor coil (condenser
coil) and base pan should be inspected periodically (yearly
or bi-yearly) and cleaned of all debris (lint, dirt, leaves, paper,
etc.). Clean the coils and base pan with a soft brush and
NOTE: Units are to be inspected and serviced by qualied service personnel only.
Before reinstalling the chassis in the sleeve, inspect the
indoor blower housing, blower wheel, condenser fan blade,
and condenser shroud periodically (yearly or bi-yearly) and
clean of all debris (lint, dirt, mold, fungus, etc.) Clean the
blower housing area and blower wheel with an antibacterial /
antifungal cleaner. Use a biodegradable cleaning agent and
degreaser on condenser fan and condenser shroud. Use
warm or cold water when rinsing these items. Allow all items
to dry thoroughly before reinstalling them.
3. Periodically (at least yearly or bi-yearly): inspect all control
components, both electrical and mechanical, as well as the
power supply. Use proper testing instruments (voltmeter,
ohmmeter, ammeter, wattmeter, etc.) to perform electrical
tests. Use an air conditioning or refrigeration thermometer to
check room, outdoor and coil operating temperatures. Use a
sling psychrometer to measure wet bulb temperatures indoors
and outdoors.
NOTE: Do not use a caustic coil cleaning agent on coils or base pan. Use a biodegradable cleaning agent and degreaser.
Discharge Air Grille
Filters
Return Air
Grille
Front Cover
Evaporator Coil
Indoor Blower
Housing
Gasket
Condenser Shroud
Condenser Fan Blade
Indoor Blower
Innerwall
Basepan
Outdoor Grille
Wall Sleeve
Control Panel
Condenser Gasket
Compressor
compressed air or vacuum. If using a pressure washer, be
careful not to bend the aluminium n pack. Use a sweeping
up and down motion in the direction of the vertical aluminum
n pack when pressure cleaning coils. Cover all electrical
components to protect them from water or spray. Allow the unit
to dry thoroughly, inspect all gasket material for deterioration
(replace as necessary), and then reinstall the chassis in the
sleeve.
4. Inspect the surrounding area (inside and outside) to ensure
that the units' clearances have not been compromised or
altered.
5. Inspect the sleeve and drain system periodically (at least yearly
or bi-yearly) and clean of all obstructions and debris. Clean
both areas with an antibacterial and antifungal cleaner. Rinse
both items thoroughly with water and ensure that the drain
outlets are operating correctly. Check the sealant around the
sleeve and reseal areas as needed.
6. Clean the front cover when needed. Use a mild detergent.
Wash and rinse with warm water. Allow them to dry thoroughly
before reinstalling them in the chassis.