Mars Comfort-Aire Century PTAC07A130B User manual

Owner’s Manual
Packaged Terminal
Air Conditioners & Heat Pumps
7,000-15,000 BTUH 7,000-15,000 BTUH
Cooling w/Electric Heat Cooling w/Electric Heat
with seacoast coating
PTAC07A130B
PTAC09A130B PTAC12A130BSC
PTAC12A130B PTAC12A150BSC
PTAC12A150B PTAC15A130BSC
PTAC15A130B PTAC15A150BSC
PTAC15A150B
Heat Pump w/Electric Heat Heat Pump w/Electric Heat
with seacoast coating
PTHP07A130B
PTHP09A130B PTHP12A130BSC
PTHP12A130B PTHP12A150BSC
PTHP12A150B PTHP15A130BSC
PTHP15A130B PTHP15A150BSC
PTHP15A150B
517.787.2100 • www.marsdelivers.com

Owner’s Manual - PTAC/PTHP130-150B/BSC
2
THE FOLLOWING WARNINGS ARE
VERY IMPORTANT FOR SAFETY.
PLEASE READ THEM CAREFULLY
BEFORE INSTALLATION!
1. This air conditioner must be installed by a qualified
installer.
2. Please insure that there is an available ground in
the power supply system before installation.
3. To avoid electric shock or death, the socket
or terminal blocks for power supply to the air
conditioner(include 277V and 115V and 208-230V
series and the units that have LCDI power cord)
must have a Ground Fault Circuit Interrupter.
4. During installation, do not cross connect or reverse
L1 and neutral. Please be sure the ground wire is
firmly connected otherwise it is possible to result in
electrical shock or death.
RECOGNIZE THIS SYMBOL
AS A SAFETY PRECAUTION
WARNING
THE MANUFACTURER WILL NOT BE RESPONSIBLE
FOR ANY INJURY OR PROPERTY, DAMAGE
ARISING FROM IMPROPER SERVICE OR
SERVICE PROCEDURES. IF YOU INSTALL OR
PERFORM SERVICE ON THIS UNIT, YOU ASSUME
RESPONSIBILITY FOR ANY PERSONAL INJURY OR
PROPERTY DAMAGE WHICH MAY RESULT, MANY
JURISDICTIONS REQUIRE A LICENSE TO INSTALL
OR SERVICE HEATING AND AIR CONDITIONING
EQUIPMENT.
WARNING
HIGH VOLTAGE
DISCONNECT ALL POWER BEFORE
SERVICING OR INSTALLING THIS UNIT.
MULTIPLE POWER SOURCES MAY BE PRESENT,
FAILURE TO DO SO MAY CAUSE PROPERTY
DAMAGE, PERSONAL INJURY OR DEATH
1
CONTENTS
UNIT FEATURES ...................................................... 3
INSTALLATION INSTRUCTION................................ 5
WIRING ..................................................................... 9
OPERATING INSTRUCTIONS
(Accessory Optional). ............................................... 10
MAINTENANCE AND CLEANING............................12
NORMAL OPERATING SOUNDS
AND CONDITION.................................................... 14
DIAGNOSTIC CODES ............................................ 14
TROUBLE SHOOTING ........................................... 15
IMPORTANT NOTES:
Before using this manual, check the serial plate for
proper model identication.
The installation and servicing of this equipment must
be performed by qualied,experienced technicians
only.
Due to policy of continual product improvement, the
right is reserved to change specications and design
without notice.
IMPORTANT NOTE TO THE OWNER
The service portion of this manual is to be used by
qualied,professionally trained HVAC technicians
only. The manufacturer does not assume any
responsibility for property damage or personal injury
for proper service procedures or services performed
by an unqualied person.
IMPORTANT NOTE TO THE SERVICER
Read this manual and familiarize yourself with the
specic items which must be adhered to before
attempting to service this unit. The precautions
listed in this Installation Manual are intended as
supplemental to existing practices. However, if there
is a direct conict between existing practices and the
content of this manual, the precautions listed here
take precedence.
!
!

Owner’s Manual - PTAC/PTHP130-150B/BSC
3
2
UNIT FEATURES
This unit has many features which are different than
those found on conventional PTAC units. The servicer
must be familiar with these features in order to
property handle the unit.
•LCDI Cords - Underwriters Laboratories and the
National Electric Code (NEC) now require power
cords that sense current leakage and can open
the electrical circuit to the unit on units rated at
250 volts or less. In the event that unit does not
operate,check the reset button located on or near
the head of the power cord as part of the normal
troubleshooting procedure.
LCDI power Cord
•Automatic 3-minute compressor lockout - After
the compressor cycles off, it will not restart for three
minutes.
•Random restart delay - To help eliminate power
surges after a power outage, the unit Is equipped
with a two to four minute random restart delay
feature. Whenever the unit is plugged In with the
master switch turned on and the mode switch set in
the cool or heat mode, a random restart will occur.
•Indication LEDs - The control panel has LEDs that
correspond to fan operation and to Indicate unit
status. The LEDs next to the selections ON/OFF,
FAN, COOL, and HEAT indicate which operational
mode Is active.
•High Pressure Protection - The unit will shut off
automatically when the pressure in the system
is over 638 psi and within 10 minutes, after the
compressor turns off, the unit will restart when the
pressure turns back below 551 psi. This protection
can effectively avoid the burst and leakage of pipes,
lessen the system failures and prolong the service
life.
•Failure Tolerance - If the unit is in protection mode
less than 4 times in one hour, the accumulation
times will reset to avoid system failure. Only when
the unit enters protection mode more than 4 times in
one hour will the system fail to restart automatically
and need manual restart.
•Standard Physical Dimensions - The series PTAC
uses standard dimensions, 42” wide x 16” high x
13-3/4” deep.
Replacement of older units is made easy.
•Weather - Protected Electrical Components
-Vital electrical components are protected from the
weather by locating them on the indoor side of the
weather barrier.
•Highly Featured Microprocessor Controls
- Microprocessor controls are programmed to
interface with the temperature sensors to maximize
comfort conditions for the room occupant.
Thermistors are used to sense small changes in
temperature to give excellent room control and
allow the microprocessor to monitor and react to
changing conditions.
•Automatic Emergency Heat on Heat Pump
Units-Automatically uses electric resistance heat if
the heat pump falls.
•High-Temperature Heat Pump Operation
Protection
-Automatically protects the compressor if heat pump
is operated with high indoor coil temperatures.
Power to the outdoor fan and the compressor
are turned off if the indoor coil gets too hot during
heat pump operation to prevent damage to the
compressor.

Owner’s Manual - PTAC/PTHP130-150B/BSC
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3
•Fan Motors Permanently Lubricated - All units
have two fan motors for quiet operation and
maximum operating efficiency.
Motors are permanently lubricated to reduce
maintenance and totally enclosed to keep dirt and
water out of the motor windings.
•Indoor Fan Speed Selections LOW /HIGH/AUTO
- Unit may be operated in low, high or auto fan
speeds. Some speeds may not be present based
on unit capacities.
•Rotary Compressor - smoother operation for quiet,
dependable service and high efficiency.
•Indoor Coil Frost Control - prevents indoor coil
from freezing. Frost can form on the Indoor coil
when the unit is operated in cooling when the
outdoor temperature is low. The unit automatically
shuts the compressor off until the indoor coil
temperature warms to the point where frosting will
no longer occur, then restarts the compressor.
•LS Control (front-desk control) - The unit can be
turned ON/OFF by a front desk control switch. The
control wire, colored purple, locates in the wall
mounted thermostat interface (refer to Fig. 7 on
page 8).
The control logic as below:
1. Turn ON unit: short circuit R and LS then release
one time within 5 seconds.
2. Turn OFF unit: short circuit R and LS then release
for twice within 5 seconds.
3. Force unit shut down for one time: connect LS to R
for over 5 seconds and then release.
NOTE: After force shut down, you can turn the unit
ON again by hand-held remote controller or the
control panel.
•Special control functions for DIP switches - The
DIP switches are on main board. No. 5 auto
heating (for units with heat). When unit is connected
to the power supply, and room temperature Is
lower than 10°C/50°F for 3 minutes, unit will start
heating automatically no matter what the setting
mode is. Only when room temperature reaches
13°C/55°F will heating stop.
ON position enables this function.
No. 6 -Electric Power-off Memory. After power on,
the unit will run the same settings as last time.
ON position enables this function.
No. 7-Fan CON/CYC for heating.
ON position enables continuous fan for heating. The
default setting Is fan cycled for heating.
No. 8 -Fan CYC/CON for cooling ON position
enables fan cycle for cooling. The default setting is
fan continuous for cooling.
WARNING: Before service, you must disconnect
the power cord to avoid electric shock! Do not
reprogram DIP switches No. 1 to No. 4, when
powered this could cause damage or re. Power the
unit on again, the new function will be activated.
UNIT ACCESSORIES
This unit is designed for through-the-wall installation
in new or existing buildings. To complete the
installation of this PTAC, an insulated wall sleeve and
an outdoor grille (either the stamped aluminum
grille, or the architectural grille) are required.
Consult with your distributor to acquire any optional
accessories.
The chassis and the cabinet front are shipped in one
carton.
WARNING
HIGH VOLTAGE
DISCONNECT ALL POWER BEFORE SERVICING
OR INSTALLING THIS UNIT. MULTIPLE POWER
SOURCES MAY BE PRESENT,FAILURE TO DO SO
MAY CAUSE PROPERTY DAMAGE,PERSONAL
INJURY OR DEATH.
!

Owner’s Manual - PTAC/PTHP130-150B/BSC
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4
SLEEVE INSTALLATION
Wall sleeve location
When making the wall opening, please observe the following requirements:
A) The air inlet and outlet should be unblocked so the air can be delivered to every corner of the room.
B) Install the unit in places that are away from heat or sources of ammable gases.
C) Do not install the unit in places that are subject to heavy dust.
D) Do not install the unit in places where the operational noise and exhausted air might trouble your neighbor.
E) There should be sufcient space around the unit to facilitate maintenance and repairs
(refer to Figs. 1 and 2).
INSTALLATION INSTRUCTIONS
To ensure that the unit operates safely and efciently, it must be installed, operated and maintained according
to these installation and operating instructions and all local codes and ordinances or,in their absence, with the
latest edition of the National Electric Code (or CEC for Canadian Installations). The proper installation of this
unit is described in the following sections. Following the steps in the order presented should ensure proper
installation.
WARNING
HIGH VOLTAGE
DISCONNECT ALL POWER BEFORE SERVICING
OR INSTALLING THIS UNIT. MULTIPLE POWER
SOURCES MAY BE PRESENT, FAILURE TO
DO SO MAY CAUSE PROPERTY DAMAGE,
PERSONAL INJURY OR DEATH.
!
Dimension Recommended installation clearance
D1 Projection of case into room - 1/2” minimum up to 1-3/4”
maximum without use of electrical sub-base.
Note: 2-3/8” minimum when sub-base is used.
D2 Height above nished oor or top of carpet - 1/2” minimum
2” recommended without sub-base - 3” minimum with sub-base.
Fig. 1 Fig. 2
WARNING
REMOVE FRONT PANEL, DO NOT DIRECTLY
TOUCH THE FIN.
!

Owner’s Manual - PTAC/PTHP130-150B/BSC
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OUTDOOR GRILLE
(OPTIONAL ACCESSORY)
An outside grille must be Installed to direct air ow for
proper unit operation and also protect the outdoor
coil. The grille must be installed before installing
the chassis. When replacing an old chassis with an
existing grille or using a specialized grille In a new
Installation, please check with after-sales engineer
of supplier to determine if the new chassis should
be used with the nonstandard specialized grille.
An improper outdoor grille can decrease cooling or
heating capacity,increase energy usage and shorten
compressor life and possibly void the warranty.
5
Preparation of the Wall
The sleeve should be installed during construction
and lintels should be used to support the block above
the wall sleeve. The sleeve can not support the load
of bricks/ blocks.
For existing construction, wall opening must be
created,the proper dimensions are necessary to
avoid use of llers or additional framing .The sleeve is
modular in height and width (refer to Fig. 3 & Chart 2).
Height:
Fits 2 courses concrete block
Fits 6 courses standard brick
Fits 5 courses jumbo brick
Width: Fit approximately 3 stud spaces.
• Level from right to left.
• A slight downward pitch from the indoor side to the
outdoor side as shown below Fig. 4).
• Fasten the wall sleeve (Fig. 5).
STAMPED ALUMINUM GRILLE
ARCHITECTURAL GRILLE
Fig. 5
Fig. 3
Fig. 4 Proper Sleeve Tilt
Minimum Finished
Opening Dimensions Approximate Sleeve Dimensions
Height Width Height Width Depth
16-1/4” 42-1/2” 16” 42” 13-3/4”
Note: Sleeves may vary slightly by manufacturer.
Ensure that the unit ts the sleeve before installation.
In order for condensate water to drain property inside
the unit, the sleeve must be installed properly:
Chart 2

Owner’s Manual - PTAC/PTHP130-150B/BSC
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CHASSIS INSTALLATION
1. Remove the cabinet front from the chassis as
described In Front Removal.
2. Insert the chassis into the wall sleeve.
IMPORTANT NOTES:
1. The unit is equipped with a rubber grommet
mounted compressor. These grommets are factory
set and require no adjustment.
2. Check the indoor and outdoor grilles for
obstructions to air ow. The unit must be located
where curtains, furniture, trees, or other objects do
not block the air ow to and from the unit. If air is
obstructed and/or deected back into the unit,the
air conditioner compressor may cycle on and off
rapidly. This could damage the compressor or
possibly void the warranty.
FRONT REMOVAL
1. Grasp the cabinet front.
3. Slide the chassis into the wall sleeve until the
chassis anges contact the front edge of the wall
sleeve.
4. Secure the chassis to the wall sleeve using two
screws on each side of the chassis to ensure a
proper seal between the chassis and the wall
sleeve. The screws are supplied in a plastic bag.
Chassis Installation View 2
Chassis Installation View 1
3. Lift the cabinet front off the chassis. Reverse this
procedure to reinstall the cabinet front.
Cabinet Front Removal View 2
2. Pull the bottom of the cabinet front away from
the chassis until the retaining clips disengage.
Cabinet Front Removal View 1
Screws
(2 on each
side of unit)

Owner’s Manual - PTAC/PTHP130-150B/BSC
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WIRING
Cord connection to a wall socket is not permitted for
265V units. All 265V units must be hard wired using
the hard wire kit or make use of the plug in receptacle
in the standard subbase.
230~208V units are equipped with LCDI power cords
and can open the electrical circuit to the unit. In
the event the unit does not operate, check the reset
button located on or near the head of the power cord
as part of the normal procedure.
VOLTAGE MEASUREMENTS
Once the unit is properly wired, measure the unit
supply voltage. Voltage must fall within the voltage
range given in Chart 3.
Fig. 6 Receptacles / Sub-bases
NOTE: See the “Remote Thermostat Change”
Instructions before using the thermostat.
Fig. 7 wall mounted thermostat wiring
Operating Voltage
Unit Voltage Voltage Utilization Range
Rating Minimum Minimum
230/208 187 253
265 238 292
Chart 3 - Operating Voltage
WARNING
HIGH VOLTAGE
DISCONNECT ALL POWER BEFORE SERVICING OR
INSTALLING THIS UNIT MULTIPLE POWER SOURCES BE
PRESENT, FAILURE TO DO SO MAY CAUSE PROPERTY
DAMAGE, PERSONAL INJURY OR DEATH.
DO NOT SERVICE THIS UNIT WITHOUT FIRST SHUTTING
OFF THE POWER TO THE UNIT FROM THE CIRCUIT
BREAKER AND/OR REMOVING THE UNIT CORD SET PLUG
FROM THE WALL OUTLET.
!
WARNING
TO AVOID THE RISK OF PROPERTY DAMAGE, PERSONAL
INJURY OR FIRE, USE ONLY COPPER CONDUCTORS.
!
WARNING
TO AVOID THE RISK OF PROPERTY DAMAGE, PERSONAL
INJURY OR DEATH DUE TO ELECTRICAL SHOCK, DO NOT
USE AN EXTENSION CORD WITH THIS UNIT.
!
WARNING
TO AVOID THE RISK OF PROPERTY DAMAGE, PERSONAL
INJURY OR FIRE. DO NOT INSTALL WITH POWER CORD
STRETCHED OR UNDER A STRAIN AS THIS MAY CREATE
LOOSE PLUG/RECEPTACLE CONNECTION.
!
WARNING
TO AVOID THE RISK OF PERSONAL INJURY, WIRING TO THE
UNIT MUST BE PROPERLY POLARIZED AND GROUNDED.
!
WARNING
THIS AIR CONDITIONER IS NOT MEANT TO PROVIDE
UNATTENDED COOLING OR LIFE SUPPORT FOR PERSONS
OR ANIMALS WHO ARE UNABLE REACT TO THE FAILURE
OF THIS PRODUCT.
THE FAILURE OF AN UNATTENDED AIR CONDITIONER MAY
RESULT IN EXTREME HEAT IN THE CONDITIONED SPACE
CAUSING OVERHEATING OR DEATH TO PERSONS OR
ANIMALS.
!
265V 30 Amp
265V 20 Amp
Large tandem
230/208V 30 Amp
Perpendicular
230/208V 20 Amp
Thermostat

Owner’s Manual - PTAC/PTHP130-150B/BSC
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Receiver of IR remote controller signal
Fig. 8 Use of unit mounted control panel
Operation mode buttons
Press these buttons to select
the unit mode heat, cool or
fan.
Operation mode
indicator lamps
When the unit operates on
heat or cool or fan mode
the indicator lamps will be
activated.
Digital Displayer
On normal operation indicates room temperature;
When pressing + or - button, indicates setting temperature;
On time operation, indicates timer time;
On failure operation, indicates fault code.
Warm button
Press this button to set room
temperature warmer.
COOL button
Press this button to set room
temperature cooler.
Fan Speed button
Press this button to
select the fan speed on
high, low or auto.
Fan speed indicator lamp.
Operation indicator
lamp.
ON/OFF button
Press this button to turn
the unit ON or OFF.
OPERATING INSTRUCTIONS

Owner’s Manual - PTAC/PTHP130-150B/BSC
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COOL / FAN / HEAT MODE
OPERATION PROCEDURE
Control panel:
• Press the ON/OFF button.
• Press the HEAT/COOL/FAN button, select the
operation mode: heat/cool/fan.
• Press + or - button, to set your desired temperature.
The setting temperature range is 60-90°F (16-32°C).
• Press the FAN SPEED button, to set your desired
air ow rate: high/low/auto.
TIMER PROCEDURE (Remote controller)
When batteries are inserted, the present time Is
automatically set to AM 0:00.E.X.:set to AM10:30.
• Open the back cover,push the CLK button .The time
Indicator is ickering and can set the present time.
• Press the HOUR button.(set to AM 10:00)
• Press the MIN button. (set to 30)
• Press the CLK button again, and then close the back cover.
SET UP OPERATION
1) Temperature shift key: Press + and - button at the
same time for 3 seconds, the temperature is shifted
between Fahrenheit and centigrade.
2) Temperature setting limiting: Press + and SPEED
button at the same time to enter the maximum and
minimum temperature setting. R1~R8 will be
displayed every 3 seconds. Release the two keys to
ensure the setting is effective and the figures will
last for 5 seconds. The temperature setting range is
between 60°F ~90°F as factory default.
VENTILATION CONTROL
The ventilation control lever is located at left side of
unit, behind front panel.
NOTE: The vent door shipping tape must be removed
before using vent control lever. See Fig. 9 and Fig. 10.
When set to closed, only the air Inside the room is
circulated and ltered;
When set to open, some outdoor air will be drawn into
room, this will reduce heating or cooling efciency.
3) Remote thermostat change: In standby off
mode, press HEAT and+ button, for 3 seconds,
the buzzer will chime and LED display will read “P”
or “r”.
P: unit control panel has control of unit.
r: wall thermostat has control of unit.
R1 R2 R3 R4 R5 R6 R7 R8
Heating Temperature Limits (°F)
86 86 90 74 92 90 72 90
Cooling Temperature Limits (°F)
63 65 72 72 67 69 68 60
Chart 4. Temperature setting limiting
Fig. 10 Shipping Screw Location
Fig. 9 Shipping Tape Location
The vent control allows outside air to be drawn into the
conditioned area. This outside air can provide ventilation
when the blower Is operating, but it will increase the
heating or cooling load and operating costs.
To obtain access to the vent control
1. Remove the cabinet front (see Front Removal).
2. Remove the shipping screw (if installed) from the
vent door.
3.Remove the label (if present) from over the vent
control lever on the left side of the chassis. Remove
the vent door shipping screw.
4. Rotate the vent control lever to either open or close
the damper.
Shipping tape
Remove shipping
screw if present