Mars Comfort-Aire Century VCD24 SA Series Installation instructions

517.787.2100 • www.marsdelivers.com
Installation and
Owner’s Manual
IMPORTANT NOTE:
Please read this manual carefully
before installing or operating your
wired remote controller. Make sure to
save this manual for future reference.
WIRED REMOTE CONTROLLER
MODEL:KJR-120X/TFBG-E
WIRED CONTROLLER
Installation and Owner’s Manual
Hyper Heat
Single-Zone
Control Model
KJR-120X/TFBG-E
Models
VCD24, 30, 36, 48, 60 SA Series

Wired Controller IOM - VCDxxSA
This manual gives detailed description of the precautions
that should be brought to your attention during operation.
In order to ensure correct service of the wired controller
please read this manual carefully before using the unit.
For convenience of future reference, keep this manual
after reading it.
All the pictures in this manual are for explanation purposes
only. There may be slightdifferences from the wired
remote controller you purchased (depending on model).
The actual shape shall prevail.
Installation and
Owner’s Manual
IMPORTANT NOTE:
Please read this manual carefully
before installing or operating your
wired remote controller. Make sure to
save this manual for future reference.
WIRED REMOTE CONTROLLER
MODEL:KJR-120X/TFBG-E

Wired Controller IOM - VCDxxSA
1. Safety precaution
2. Installation accessories
3. Installation method
4. Specifications
5. Feature and function of the wired controller
6. Nameson the LCD of the wired controller
7. Namesof buttonson the wired controller
8. Preparatory operation
9. Operation
10 Timer functions
11. Weekly Timer 1
12.Weekly Timer 2
13.Fault alarm handling
14.Technical indication and requirements
15.Queries and settings
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Table of Contents

Wired Controller IOM - VCDxxSA
1
1. Safety precaution
WARNING
Please entrust the distributor or professionals to install the unit.
Installation by other persons may lead to imperfect installation,
electric shock or re.
Adhere to this installation manual.
Reinstallation must be performed by professionals.
•
•
•
•
NOTE
•
•
Do not install the unit in a place vulnerable to leakage of
ammable gases.Once ammable gases are leaked and left
around the wire controller, re may occure.
Do not operate with wet hands or let water enter the wire
controller. Otherwise, electric shock may occur.

Wired Controller IOM - VCDxxSA
2
1. Safety precaution
NOTE
The specified cables shall be applied in the wiring. No
external force may be applied to the terminal. Otherwise,
broken wires and heating may occur and result in fire.
•
2. Installation accessory
Select the installation location
Preparation before installation
1. Please confirm that all the following parts have been supplied.
1
2
3
4
5
3
2
M3.9X25 (For Mounting on the Wall)
M4X25 (For Mounting on switch box)
6
7
8
3
2
No. Name Qty. Remarks
Wire controller
Installation and owner’s manual
For Mounting on the Wall
Plastic screw bars
Screws
Wall plugs
For fixing on switch box
Optional
Screws
9Screw
1
1
Battery
The connective wires group
1
1
1
M4X8(For Mounting the connective wire group)

Wired Controller IOM - VCDxxSA
3
2. Installation accessory
Precaution of installing the wired controller
1. This manual provides the installation method of the wired
controller. Please refer to the wiring diagram of this installation
manual to connect the wiredcontroller with indoor unit.
2. The wired controller works in a low voltage loop circuit. DO
NOT directly contact the cable to high voltage above, 24V.
Wiring clearance between configured tubes should be at the
range of 300~500mm or above.
3. The Shielded wire of the wired controller must be grounded.
2. Prepare the following assemblies on the site.
1
2
1
Switch box
Wiring Tube(Insulating
Sleeve and Tightening
Screw)
Qty.(embeded
into wall)
No. Name Remarks
Specification
(only for reference)
1

Wired Controller IOM - VCDxxSA
4
3. Installation method
Fig 3-2
Fig 3-1
1.Wired remote controller structural dimensions
2.Remove the upper part of wired controller
Insert a slot screwdriver into the
slots in the lower part of the wired
controller (2 places), and remove
the upper part of the wired
controller. (Fig.3-2)
3/4"
3 - 3/8"
1 - 3/4"
2 - 3/8"
1 - 3/4"
4 - 3/4"
4 - 3/4" 3/4"
Buckling
position Back cover
Straight head
screwdriver
Front cover

Wired Controller IOM - VCDxxSA
5
3. Installation method
Fig 3-3
Fig 3-4
For exposed mounting, fasten the back plate on the wall with
the 3 screws (M4×20) and plugs. (Fig.3-3)
Use two M4X25 screws to install the back cover on the 86
switch box, and use one M3.9X25 screw to x to the wall.
3. Fasten the back plate of the wired controller
Back plate
Screws (M4×20)
Screw hole fixed on the wall, use one φ3.9X25mm
Screw hole installed on 86 switch box, use two M3.9X25mm
NOTE: The PCB is mounted in the upper part of the wired
controller. Be careful not to damage the board
with the slot screwdriver.

Wired Controller IOM - VCDxxSA
6
3. Installation method
•Put the battery into the installation site and make
sure the positive side of the battery is in accordance
with the positive side of installation site.(See Fig.3-5)
•Please set the time correctly the first time batteries
are installed. Batteries in the wiredcontroller can
keep time under power failure which ensuresthe
time is right. When the powerrestores, if the time
displayed is not correct, it means the battery is dead
and you need to replace the battery.
Fig 3-5
4. Battery installation
NOTE: Put on a at surface. Be careful not to distort the
back plate of the wire controller by overtightening the
mounting screws.

Wired Controller IOM - VCDxxSA
7
1 Indoor unit
2 Notch the part for the wiring to pass through with nippers, etc.
Connect the terminals on the remote controller (HA ,HB), and
the terminals of the indoor unit (HA ,HB). (HA and HB do not
have polarity.)
HA HB
1
3. Installation method
Fig 3-6
5. Wire with the indoor unit
DO NOT allow water to enter the wiredcontroller.
Use the trap and putty to seal the wires.
Connecting wires must be xed reliably and cannot be
pulled.
1 - 3/4"
2 -3/8"
Wiring
hole
switch box
AB
NOTE:

Wired Controller IOM - VCDxxSA
8
For some units, the wired controller connects to the unit HA
and HB ports through the HA and HB ports. There is no polarity
between HA and HB. SeeFig. 3-7
HA HB
Indoor Unit
Wired Controller
Fig.3-7
3. Installation method

Wired Controller IOM - VCDxxSA
9
The main/secondary wired controller can be used to enable
two wired controllers to control one unit, and the wired
controllers connect to the unit HA and HB ports through the
HA and HB port on the controller. There is no polarity between
HA and HB. SeeFig. 3-8
HA HB
HAHB
HAHB
Indoor Unit
Wired Controller 1
Wired Controller 2
Fig.3-8
0
1
3. Installation method

Wired Controller IOM - VCDxxSA
10
For some units, one wired controller can support multiple units
(a maximum of 16 units). In this case, the wired controller and
unit need to be connected to the HA and HB ports at the same
time. In group control, there will be no error displayed on the
wired controller . SeeFig. 3-9
HA HB HA HB HA HB
Indoor Unit 2 Indoor Unit n
(n<=16)
Indoor Unit 1
Wired Controller 1
HAHB
Fig.3-9
0 1 2
.....
3. Installation method

Wired Controller IOM - VCDxxSA
Fig 3-11
11
3. Installation method
Fig 3-10
Putty
Putty
Putty
Trap
Trap
Trap
6. Reattach the upper part of the wired controller
After adjusting the upper case,buckle the upper case; avoid
clamping the wiring during installation. (Fig 3-11)
All the pictures in this
manual are for explanation
purposesonly. Your wired
controller may be slightly
different .The actual shape
shall prevail.

Wired Controller IOM - VCDxxSA
12
4. Specification
Wiring specications
Wiring type Size Total length
shielded vinyl cord or cable
18g
14g
66’
164’
DC 12V
23~110°F
RH40%~RH90%
Input voltage
Ambient temperature
Ambient humidity

Wired Controller IOM - VCDxxSA
13
5. Feature and function of the wired controller
Feature:
Function:
LCD display.
Malfunction code display: it can
display the error code, helpful
for service.
4-way wire layout design, no raised
part on the back, more convenient
to place the wires and install the
device.
Room temperature display. Weekly
Timer.
Mode: choose Auto-Cool-Dry- Heat
- Fan
Fan speed: Auto/Low/Med/High speed
Swing(on some models)
Timer ON/OFF
Temp setting
Weekly timer
Follow me
Turbo
24-hour System
12-hour System
Sleep
8 degree heating function
(on some models)
Auto-restart
Individual louver control
(on some models)
Automatic airow test
Rotation&Back-up
Dual Control
Group Control
Child Lock
LCD display
Clock
-------
-------
----
----
Function:

Wired Controller IOM - VCDxxSA
14
1 2 3 45
11
6 98
12
10
13
15 14
1 Operation mode indication
2 Fan speed indication
3 Temperature display
4 Lock indication
5 °C / °F indication
6 Rotating indication
7 Main unit and secondary
unit indication
8 Room temperature indication
9 Follow Me function indication
10 Sleep mode indication
11 Electric Auxiliary Heat/
Turbo function indication(some models)
NOTE: AHU models only have turbo functions.
12 Left-right swing indication
(some models)
13 Clock display
14 On/O timer
15 Timer display
7
6. Name on the LCD of the wired controller

Wired Controller IOM - VCDxxSA
15
7. Name of button on the wired controller
1 POWER button
2 MODE button
3 DAY OFF/DEL button
4 ADJUST button
5 CONFIRM button
6 TIMER button
7 FAN SPEED button
8 BACK bottom
9 SWING bottom
10 FUNC. button
11 COPY button
3
1
2
10
7
9
4
5
611
8

Wired Controller IOM - VCDxxSA
16
Press the Timer button for 2 seconds or more.
The timer display will ash.
1
2
3
4
The date setting is nished and the time setting is
prepared after pressing Timer button or CONFIRM
button or there is no button pressed in 10 seconds.
The setting is done after pressing CONFIRM
button or there is no button pressed in 10
seconds.
Set the current day and time
5
ex.Monday 11:20
Press the button “ ” or “ ” to set the date.
The selected date will ash.
Press the button “ ” or “ ” to set the
current time. Press repeatedly to adjust the
current time in 1-minute
increments. Press and hold
to adjust the current time
continuous.
8. Preparatory operation

Wired Controller IOM - VCDxxSA
17
9. Operation
Press the Power button.
8 degree heating function (on some models)
6Time scale selection
Pressing the buttons “ ” and “ ”
for 2 seconds will alternate the clock
time display between the 12h & 24h
scale.
To start/stop operation
NOTE:
When the heating mode is 60°F/62°F , press the down button
twice within 1 second to turn on the 8 ° heating function, and
press the Power, Mode, adjust , Fan speed, Timer, and Swing
button to cancel the 8° heating function.
For some models, the 8° heating function can only be set by
remote control, you can not choose this function by wired
controller.