Lippert Furrion Chill FACR13SA Series User manual

TM
ROOFTOP AIR CONDITIONER WITH ELEC-
TRONIC CONTROL
CLIMATISATION DE TOIT AVEC COMMANDE
ÉLECTRONIQUE
AIRE ACONDICIONADO PARA TECHO CON
CONTROL ELECTRÓNICO
MODEL/MODÈLE/MODELO: FACRSA**, FACRSA**, FACRSA**
FACRSA**AM, FACRSA**AM, FACRSA**AM, FACTCA**
FACTCA**OEM
USER MANUAL/MANUEL DE L’UTILISATEUR/ MANUAL DE USUARIO
* Picture shown here is for reference only.
* L’image présentée ici n’est qu’une référence
* La imagen que se muestra es solo como referencia.
** Product Color/** Couleur du produit/**Colordelproducto CCD-0005730 Rev: 04-25-22

English
CCD-0005730 Rev: 04-25-22 - 1 -
Furrion Model No. Lippert No.
FACR13HESA-PS 2021132276
FACR13HESA-BL 2021130013
FACR13HESA-PS-AM 2021132277
FACR13HESA-BL-AM 2021132275
FACR14SA-PS 2021123613
FACR14SA-BL 2021123563
FACR14SA-PS-AM 2021123705
FACR14SA-BL-AM 2021123707
FACR15SA-PS 2021123799
Furrion Model No. Lippert No.
FACR15SA-BL 2021123630
FACR15SA-PS-AM 2021123793
FACR15SA-BL-AM 2021123708
FACR15HESA-PS 2021130009
FACR15HESA-BL 2021130010
FACR15HESA-PS-AM 2021130011
FACR15HESA-BL-AM 2021130008
FACT12CA-PS 2021123541
FACT12CA-PS-OEM 2022007391
Thank you for purchasing this Furrion® product. Before operating your new appliance, please read these instructions carefully. This
instruction manual contains information for safe use, installation and maintenance of the appliance.
Please keep this instruction manual in a safe place for future reference. This will ensure safe use and reduce the risk of injury. Be
sure to pass on this manual to new owners of this appliance.
The manufacturer does not accept responsibility for any damages due to disregarding these instructions.
CONTENTS
EXPLANATION OF SYMBOLS.........................................................................................................................................................................
IMPORTANT SAFETY INSTRUCTIONS.......................................................................................................................................................
Handling the device.....................................................................................................................................................................................................................................2
Handling Electrical Cables......................................................................................................................................................................................................................3
BEFORE INSTALLING ........................................................................................................................................................................................
What’s in the Box...........................................................................................................................................................................................................................................3
Choosing Proper Location for the Air Conditioner....................................................................................................................................................................3
Roof Preparation...........................................................................................................................................................................................................................................4
Air Distribution Duct Sizing and Design...........................................................................................................................................................................................5
Air Distribution System Installation.....................................................................................................................................................................................................5
Preparing Wire Connections..................................................................................................................................................................................................................5
INSTALLATION......................................................................................................................................................................................................
Installing the Rooftop Unit........................................................................................................................................................................................................................6
Installing the Wall Thermostat ...............................................................................................................................................................................................................6
Installing the Air Distribution Box.........................................................................................................................................................................................................6
DIP Switch Settings.....................................................................................................................................................................................................................................8
Wire Connection - Digital Furrion Wall Controller/Thermostat...........................................................................................................................................9
Final Installation.............................................................................................................................................................................................................................................10
OPERATION ...........................................................................................................................................................................................................
Ducted Systems............................................................................................................................................................................................................................................11
Non-Ducted System ...................................................................................................................................................................................................................................11
Thermostat Use.............................................................................................................................................................................................................................................11
CLEANING AND MAINTENANCE ..................................................................................................................................................................
TROUBLESHOOTING ........................................................................................................................................................................................
SPECIFICATIONS.................................................................................................................................................................................................
WIRING DIAGRAM................................................................................................................................................................................................

EXPLANATION OF SYMBOLS
This manual has safety information and instructions to help you
eliminate or reduce the risk of accidents and injuries. Always
respect all safety warnings identified with these symbols. A
signal word will identify safety messages and property damage
messages, and will indicate the degree or level of hazard
seriousness.
DANGER
Indicates an imminently hazardous situation which, if not
avoided, will result in death or serious injury.
WARNING
Indicates a potentially hazardous situation which, if not
avoided, could result in death or serious injury.
CAUTION
Indicates a potentially hazardous situation which, if not
avoided, may result in minor or moderate personal injury, or
property damage.
IMPORTANT SAFETY INSTRUCTIONS
This manual has safety information and instructions to help
users eliminate or reduce the risk of accidents and injuries.
Please read this instruction manual carefully before installation
and start-up, and store it in a safe place for future reference.
If you pass on the device to another person, hand over this
instruction manual along with it.
The manufacturer accepts no liability for damage in the
following cases:
●Faulty assembly or connection
●Damage to the product resulting from mechanical
influences and excess voltage
●Alterations to the product without express permission from
the manufacturer
●Use for purposes other than those described in the
operating manual.
The following basic safety information should be heeded when
using electrical devices to protect against:
●Electric shock
●Fire hazards
●Injury
All Furrion product referenced in this manual is to be installed in
accordance with local and national codes, including the latest
editions of the following standards:
USA:
–NFPA 1192
–NFPA 70
Canada:
●C22.1
●CSA Z240
Handling the device
WARNING
●Installation and repair of the rooftop air conditioner
must only be carried out by qualified personnel who
are familiar with the risks involved and the relevant
regulations. Inadequate repairs may cause serious
hazards.
●Electrical devices are not toys. Keep electrical devices
out of reach of children or elderly persons. Do not allow
them to use electrical devices without supervision.
●Prevent inexperienced people from using the device
without supervision.
●Do not undo the upper cover of the rooftop air
conditioner in the event of a fire. Use approved
extinguishing agents instead. Do not use water to
extinguish fires.
CAUTION
●The rooftop air conditioner must be installed securely so
that it cannot fall down.
●Only operate the rooftop air conditioner if you are certain
that the housing and the cables are not damaged.
●Do not use the rooftop air conditioner near flammable
fluids or in closed rooms.
●Make sure no combustible objects are stored or installed
near the air outlet. A distance of at least 20” must be
kept.
●Do not reach into air outlets or insert any foreign objects
into the device.
●Only use the device as intended.
●Do not make any alterations or conversions to the device.
●If faults occur in the refrigerant circuit, the system must
be checked by a certified service technician and repaired
properly. The refrigerant must never be released into the
air.
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CCD-0005730 Rev: 04-25-22
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Handling Electrical Cables
WARNING
The electrical power supply must only be connected by a
qualified electrician.
CAUTION
●Refer to NEC (National Electric Code) for proper sizing of
wire gauge (awg) based on cable length and overcurrent
protection rating that is suppling power to the air
conditioner.
●See rooftop unit nameplate for proper overcurrent
protection sizing.
●Attach and lay the cables so that they cannot be tripped
over or damaged.
●Only a qualified electrician should connect the rooftop air
conditioner to electrical power.
●Do not lay loose or bent cables next to electrically
conductive materials.
●Do not pull on the cables.
●Use cable ducts to lay cables through walls with sharp
edges.
●Refer to rooftop unit nameplate and NEC for proper power
supply rating.
BEFORE INSTALLING
Read this installation manual completely before installing the
rooftop air conditioner.
The following tips and instructions must be observed while
installing the rooftop air conditioner.
What’s in the Box
Open and remove the components from carton. Make sure you
have all the following items included in the packaging, if any
item is missing, contact your dealer.
Rooftop Air Conditioner (sold separately):
Rooftop Unit
Mounting
Frame
Filter
ADB Shroud
Control Box
Bolt
Control Knob
Lower Duct Divider
Upper Duct Divider
PE Foam
●Rooftop Unit x 1
●Warranty Manual x 1
Air Distributor Box:
Rooftop Unit
Lower Duct Divider
with Plactic Screws
Upper Duct
Divider
Mounting Frame
Filter
Screw Cap
ADB Shroud
Control Box
Bolt
PE Foam
User Manual &
Warranty Manual
Self-tapping
screw
Warning Card
User Manual
●Upper Duct Divider x 1
●Lower Duct Divider x 1
●Bolt x 4
●Mounting Frame x 1
●Control Box (sold separately) x 1
●Air Distribution Box (ADB) Shroud x 1
●Filter x 1
●PE Foam x 1
●Self-tapping Screws x 6
●Screw Cap x2
●Instruction Manual x 1
●Warranty Manual x 1
Choosing Proper Location for the Air
Conditioner
IMPORTANT: The roof must be designed to support the
weight of the rooftop unit and the weight of 2 installers
standing on the roof.
There are two ways of installing the rooftop air conditioner:
1. Using the existing roof vent opening in the vehicle roof.
2. Making a new opening. In this case the opening should be
reinforced by an appropriate frame as required.
Existing Roof Vent Opening
The air conditioner is designed to fit over an existing 14” roof
vent opening.
New Opening
When no roof vent is available or another location is desired,
the following is recommended:
–For one unit installation - the air conditioner should be
mounted slightly forward of center (front to back) and
centered from side to side.
–For two unit installations, install one air conditioner one
third from the front of the RV and the other air conditioner
two thirds from the front of the RV, aligned in the center.
It is preferred that the air conditioner be installed on a relatively
flat and horizontal roof section measured when the RV is
parked on a level surface.
NOTE: A 15° slant to either side or front to back is acceptable
for all units. If the roof exceeds 15° please use an exterior
leveling shim to make air conditioner level.
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After the Location Has Been Selected:
1. Check for obstructions in the area where the air
conditioner will be installed.
Center Line
of Rooftop
Front
Roof Opening
18”
34⁄”
(884mm)
13⁄”
(345mm)
27⁄”
(700mm)
Keep this air flow area free of obstructions
2. Check the inside of the RV for return air kit obstructions.
(i.e. door openings, room dividers, curtains, ceiling fixtures,
etc.) Allow 6” (152mm) space from the opening to account
for any potential return air kit obstructions.
Roof
Opening
17.5”
(438mm)
17.5”
(438mm)
19⁄”
(500mm)
19⁄”
(500mm)
6"
6"
Roof
Opening
17.5”
(438mm)
17.5”
(438mm)
19
⁄”
(500mm)
19⁄”
(500mm)
6"
6"
Roof Preparation
Opening Requirements - Before preparing the ceiling opening,
decide on the type of system options. Read all of the following
instructions before beginning the installation.
WARNING
Fire/Electric Shock Hazard
●Make sure there are no obstacles inside the RV roof, floor
and walls, such as wires and pipes.
●Shut off the gas supply and disconnect the 115VAC
power from the RV before drilling or cutting into the RV.
Failure to obey these warnings could result in death or
serious injury.
Roof Thickness
The installation of air conditioner suits for roof thickness from
3.5” (90mm) to 6” (152mm). For other thickness, please contact
Furrion or Furrion authorized service agent.
Installing in an Existing Opening
1. Unscrew and remove the roof vent.
2. Remove all caulking compound around the opening.
3. If the opening exceeds 14¼” x 14¼” (+½”), it will be
necessary to resize the opening to 14¼” x 14¼” (+½”). If the
opening is less than 14¼” x 14¼” (+½”), it must be enlarged.
362mm
14¼”
362mm
14¼”
362mm
14¼”
362mm
14¼”
Making a New Opening
If a roof vent opening will not be used, a 14¼” x 14¼” (+½”)
(362mm x 362mm) opening must be cut through the roof and
ceiling of the RV. This opening must be located between the
roof reinforcing members.
The 14¼” x 14¼” (+½”) opening is part of the return air system
of the air conditioner and must be finished in accordance with
NFPA Standard 501C Section 2.7.2.
1. Mark a 14¼” x 14¼” (+½”) square on the roof and carefully
cut an opening.
362mm
14¼”
362mm
14¼”
362mm
14¼”
362mm
14¼”
2. Using the roof opening as a guide, cut a matching hole in
the ceiling.
NOTE: Maintain structural integrity. Otherwise damage
to product and/or RV could occur. Always observe the
following guidelines while structuring the opening.
Do not cut roof
structure or
rafters
Good: rafters
supported by
cross beams
Good: location
between roof
rafters
3⁄4" Min.
(19.05 mm)
Leave access for
power supply wiring
3. The opening created must be framed to provide adequate
support and prevent air from being drawn from the roof cavity.
4. Lumber ¾” or more in thickness must be used. Remember
to provide an entrance hole for power supplies, wall
thermostat and furnace wiring for connections. Leave 15”
(381mm) minimum at the front of the opening.
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Do not cut roof
structure or
rafters
Good: rafters
supported by
cross beams
Good: location
between roof
rafters
3⁄4" Min.
(19.05 mm)
Leave access for
power supply wiring
Air Distribution Duct Sizing and Design
The installer of this system must design the air distribution
system for their particular application.
NOTE: Make sure ductwork will NOT bend or collapse during
and after installation, and that it is correctly insulated and
sealed. Otherwise, damage to roof structure and ceiling could
occur.
The following requirements must be met for properly operate
the unit:
Roof Cavity Depth 3.5"-6" (89mm-152mm)
Duct Cross
Sectional Area 21 Sq. In. Min.
Duct Size
Depth 1½" Min. - 2½" Max. (38mm
Min. - 63.5mm Max.)
Width 7" Min. - 10" Max. (178mm
Min. - 254mm Max.)
Total Duct Length 15Ft. Min. - 40Ft. Max. (4.5m
- 13m)
Duct Length (short run) 1/3 Total Duct Length
Register
Requirements per
A/C Unit
Number Required 4 Min. - 8 Max.
Supply Register Free
Air Area 14 Sq. In. (90 sq. cm)
Return Register Free
Air Area 40 Sq. In. (258 sq. cm)
Distance From Duct
End
5" Min. - 8" Max. (127mm
Min. - 203mm Max.)
Distance From Elbow 15" (381mm)
Total System Static
Air Pressure
Blower at High Speed,
Filter & Grille In Place 0.55 - 1.10 In. W.C.
●Properly insulate and seal all discharge air ducts to prevent
condensation from forming on their surfaces or adjacent
surfaces during operation of the unit. This insulation must
be R-7 minimum.
Frame
DuctDuct
Frame
Frame
Roof
Opening
Roof Opening
Roof
Duct Ceiling Duct
TOP VIEW (BACK OF RV)
SIDE VIEW (TOWARD BACK OF RV)
●Return air openings must have 80 square inches (516
square centimeters) minimum free area including the filter.
●Return air to the unit must be filtered to prevent dirt
accumulation on the unit cooling surface.
Air Distribution System Installation
It is the responsibility of the installer to review each RV floor
plan to determine the following items in conjunction with “Air
Distribution Duct Sizing and Design” section
NOTE: Alternate configurations and methods may be used
which will allow the unit to operate properly, however, these
alternate configurations and methods MUST be approved by
Furrion in writing.
●Duct size
●Duct layout
●Register size
●Register location
●Thermostat location
●Indoor temperature sensor location (if applicable)
Front
Registers 4
Min - 8 Max.
(Per Unit) 14
Sq. In. Free
Area Per
Register
Air Conditioner
Return Air
Preparing Wire Connections
Each rooftop air conditioner opening must be prepared
with proper wiring to connect the ceiling controller of the air
conditioner to the 115VAC and 12VDC supply voltage, wall
thermostat and furnace switch.
NOTE: The wire connections need to be positioned in the
forward facing 1/4 section of the opening.
DANGER
Electrical Shock Hazard
●Disconnect power before servicing. Failure to obey this
warning could result in death or serious injury.
●Provide grounding in compliance with all applicable
electrical codes. Failure to obey this warning could result
in death or serious injury.
115VAC Supply
1. Prepare a dedicated 20 amp rated circuit for each air
conditioner unit, protected with a time delay fuse or circuit
breaker.
NOTE: With multiple air conditioners on a 50 amp service,
it is best to balance between the line voltage legs.
2. Extend circuit with a 12AWG 2-wire with ground to the roof
opening.
NOTE: The wire gauge is generally acceptable per NEC
code, refer to rooftop unit nameplate and applicable code
for proper sizing.
3. Protect the wire where it passes through any rough
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CCD-0005730 Rev: 04-25-22 - 5 -

surfaces or openings.
4. Terminate with at least 15” (381mm) of supply wire
extending out of the roof opening. This ensures an easy
connection at the control box.
12VDC Supply
1. Prepare a 15 amp max protected circuit to supply power to
all air conditioner units.
NOTE: The branch circuit can be dedicated or shared with
other utilization equipment.
2. Extend circuit with a 14AWG 2-wire, (12V+, 12V-) to each
roof opening.
3. Protect the wire where it passes through any rough
surfaces or openings.
4. Terminate with at least 15” (381mm) of supply wire
extending out of the roof opening. This ensures an easy
connection at the control box.
Wall Controller Connection (Single and
Multizone Thermostat)
1. Prepare 4 wires to connect between the ceiling controller
(roof opening) and wall controller/thermostat (wall
opening).
NOTE: 18AWG max should be used, Furrion recommends
using a standard thermostat wire with at least 4-wires.
2. Terminate with at least 15” (381mm) of wire end for easy
connection.
3. For Multizone installations, prepare additional wiring of the
same type to connect between each roof opening.
Furnace Switch (Optional)
1. If required to operate the furnace using the air conditioner
wall controller/ thermostat, prepare 2-wires in the roof
opening to connect the desired ceiling control zone with
the furnace’s thermostat circuit.
NOTE: This serves as a 12V+ line, that becomes hot only
when the ceiling controller closes the furnace switch to
turn the furnace on.
2. Terminate with at least 15” (381mm) of wire at each end for
easy connection.
INSTALLATION
Installing the Rooftop Unit
CAUTION
●The rooftop unit weighs approximately 100 pounds (45
kg). To prevent back injury, use a mechanical hoist when
lifting or moving the unit. Failure to obey this warning
could result in injury.
●Do not slide unit. It may damage the gasket at the bottom
of the rooftop unit and cause leakage.
●Do not grasp the ventilation slots to lift the rooftop unit
up.
Hold the bottom of the unit, lift and position the rooftop unit into
the prepared opening using the gasket at the bottom of the
rooftop unit as a guide.
Roof Opening
This Side is
Facing Forward
This completes the outside installation of the rooftop unit.
Minor adjustments can be done from inside of the RV if
required.
Installing the Wall Thermostat
Furrion provides 2 types of wall thermostats (sold separately)
in different functionalities:
●Single zone wall thermostat
●Multi zone wall thermostat
Based on the wall thermostat version you selected. Please
refer to the separate instruction manual on how to install the
wall thermostat to the RV.
Installing the Air Distribution Box
NOTE: The installation of the air distribution box is same for
both ducted and non-ducted structures.
The rooftop unit is fixed on the RV roof using 4 long bolts
through the mounting frame from the interior of the RV ceiling.
1. Check the gasket alignment of the rooftop unit inside the
RV over the roof opening and adjust as necessary by lifting
and moving slightly.
Roof Opening
2. Reach up into the return air opening and pull down the
rooftop unit electric cord. Ensure all terminated wire ends
specified in “Preparing Wire Connections” section are
accessible.
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CCD-0005730 Rev: 04-25-22
- 6 -

Rooftop Unit
Cable
115VAC
Power Cord ±12VDC
Wires
Thermostat Wire
(4-wire min.)
Return to Furnace
(optional)
12V+ from Furnace
(optional)
Roof Opening
3. Assemble the lower duct divider to the mounting frame.
4. Install the assembled mounting frame and the lower duct
divider into the rooftop opening. Make sure the “THIS WAY
FRONT” mark is facing front (the direction of the vehicle)
while installing.
5. Fix the assembled mounting frame and lower duct divider
into the rooftop unit using 4 bolts provided. Evenly tighten
the four bolts to a torque of 40 to 50 inch pounds. This will
compress the roof gasket to approximately ½”.
NOTE: If bolts are left loose there may not be an adequate
roof seal or if over tightened, damage may occur to the
rooftop base or mounting frame.
6. Remove the film off the double sided sticky tape found on
the top inner side of the lower duct divider.
Peel o the film
7. Stick the upper duct divider into the assembled mounting
frame.
NOTE: Make sure the upper duct divider is compressing
the top foam on the base of the air conditioner unit, and
compress tightly to the doubled sided tape on the lower
duct divider to ensure a positive retention.
Upper duct divider
8. Use self adhesive foil tape to seal the two halves of the
duct divider together and any potential gaps around the
duct divider to roof opening that may allow cold air to leak
back into the warm intake side.
NOTE: Clean metal surfaces to remove any oils to ensure
good adhesion of the foil tape.
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Foil tape
9. Measure the height of the duct divider, and cut the PE foam
with a utility knife to the measured dimension. Peel paper
backer of foam to reveal sticky adhesive. Evenly adhere PE
condensation foam to duct divider, working material into
crevices and surfaces for a tight uniform fit across the duct
divider surface.
Duct Divider Height
PE Foam
Measured Duct
Divider Height
DIP Switch Settings
The DIP switches enable/disable different communications
between the ceiling controller and wall thermostat for functions
such as, zone selection, furnace operation, and additional
accessories.
The controls are preset with the following active DIP switch
settings:
Single Zone: Furnace on (FACC12SA-BL)
Multi Zone: Zone 1; Furnace on (FACC12ZA-BL, FACC12NA-
BL, FACC12ESZA, FACC12ZA, FACC12HE, FACC12ESHE
Location of the DIP Switch
The DIP switches are located on the PCB board of the control
box. Each time you want to set the DIP, you should open the
control box and find the DIP switches.
1. Remove the cover of the control box, and find the PCB
board.
2. Locate the position of the DIP switches on the PCB board.
DIP Switches Location
PCB Board Location
Setting DIP Switches
DANGER
Electrical Shock Hazard
Disconnect power before servicing. Failure to obey this
warning could result in death or serious injury.
1. Remove power when setting dip switches, make sure all
115VAC and 12VDC power to the control board is removed.
2. Use a small tool, slide the dip switch to either ON/OFF.
NOTE: If 12V+ is present when making a setting change, It will
be is necessary to cycle power to reset the control to make the
setting active.
Single Zone DIP Switches:
ON
3456
Heat Pump
(selected models) DIP 3 Reserved
Furnace DIP 4 OFF Furnace Off
ON Furnace On
Electric Heat
(selected models) DIP 5 OFF Electric Heat Off
ON Electric Heat On
Analog / Digital DIP 6 OFF Digital
ON Analog
Multi Zone DIP Switches:
●Each zone requires an independent ceiling control box, but
will share one wall thermostat control.
●It is important that each independent zone is set to a
unique zone value (1-4) by setting the DIP 1 and DIP 2 to
avoid repetition and communication conflicts with the wall
thermostat control.
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ON
123456
Zone Selection*
DIP 1 DIP 2 ZONE Setting
OFF OFF ZONE1
OFF ON ZONE2
ON OFF ZONE3
ON ON ZONE4
Heat Pump
(selected models) DIP 3 Reserved
Furnace DIP 4
OFF Furnace Off
ON Furnace On
Electric Heat
(selected models) DIP 5
OFF Electric Heat
Off
ON Electric Heat
On
Analog / Digital DIP 6 OFF Digital
ON Analog
Wire Connection - Digital Furrion Wall
Controller/Thermostat
DANGER
Electrical Shock Hazard
●Disconnect power before servicing.
●Provide grounding in compliance with all applicable
electrical codes.
Failure to obey this warning could result in death or serious
injury.
1. Familiarize yourself with the ceiling controller and wire
harnesses.
NOTE: When connecting to a Furrion wall controller/
thermostat, the analog harness bundle is not used and can
be tucked away. The ends do not need to be capped or
taped.
Wall Thermostat Cable
(4-wire harness)
Analog Cable (8-wire
harness)
Furnace Cable (2-wires)
12V DC Power Cable (2-wires)
Freeze Sensor Cable (wire with
copper tip and blue plastic clip)
LED Cable (1 white
cable)
2. Loosen the strain relief and compartment cover of the
control box and pass the 115VAC power cord through
the strain relief hole and re-tighten the cable clamp until
properly restrained. Do not over tighten.
3. Make wire connections following the below color codes.
Black - Hot
White - Neutral
Green/yellow - Ground
Strain Relief
4. Fit all cables into the cable compartment and tuck any
excess wires up out of the way. Tighten the cover with
screw.
5. Locate the four thermostat cables of the control box (red,
green, blue and purple), which are tied together and tagged
with “To wall thermostat”, and connect them to the
thermostat wire that extends to the wall.
IMPORTANT: Note the function marked on the wire end
and carefully trace and mark its function at the end of the
wire extension so that proper connection can be made at
the wall controller / thermostat.
Crossing the wires could prevent the control from
operating properly, or even cause damage. If uncertain,
perform a continuity test through each extension to
confirm.
Thermostat Cable
6. If applicable, locate the furnace wires from the ceiling
controller, which are two separate brown wires tagged
with “FURN”. Connect them with the 12V+ wire from the
furnace, and the return wire to the furnace.
NOTE: Polarity does not matter, connection can be freely
made to either wire. Do not connect the two brown “FURN”
wires together.
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