Page 1
IOM & Owner’s Manual
VFH-B Series
Inverter Multi Zone Ductless Mini-Split
A-VFH18DB-1
A-VFH24TB-1
www.marsdelivers.com
Page 2
IOM-Owner’s Manual - VFH-B 18/24 Series
This appliance is not intended for use by persons (including children) with reduced physical,
sensory or mental capabilities, or lack of experience and knowledge, unless they have been
In line with the MARS policy of continual product improvement, the aesthetic and dimensional
characteristics, technical data and accessories of this appliance may be changed without notice.
CONTENTS
Conformity And Range
The Instructions Before Use
Name of Parts
Technical Data
GENERAL
INFORMATION
Outdoor Unit Working Temperature Range
Electrical Connections
Installing The Outdoor Unit
Evacuation
Maintenance
Installation Dimension Diagram
INSTALLER
Check After Installation
GENERAL INFORMATION
The products in this manual may be different the actual product please refer to the your
equipment .
1
2
3
4
4
5
6
6
7
7
8
given supervision or instruction concerning use of the appliance by a person responsible for
their safety.
Children should be supervised to ensure that they do not play with the appliance.
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IOM-Owner’s Manual - VFH-B 18/24 Series
Explanation of Symbols
Indicates a hazardous situation that, if not avoided, will
DANGER
WARNING
CAUTION
NOTICE
result in death or serious injury.
Indicates a hazardous situation that, if not avoided, could
result in death or serious injury.
Indicates a hazardous situation that, if not avoided, may
result in minor or moderate injury.
Indicates important but not hazard-related information,
used to indicate risk of property damage.
Indicates a hazard that would be assigned a signal word
WARNING or CAUTION.
CONFORMITY AND RANGE
This appliance can be used by children aged 8 years and above and persons with reduced physical,sensory or
mental capabilities or lack of experience and knowledge if they have been given supervision or instruction
concerning use of the appliance in a safe way and understand the hazards involved.
Children should not play with the appliance.
Cleaning and user maintenance shall not be performed by children without supervision.
Please read this owner's manual carefully before operating the unit and keep it for reference.
Instructions for installation and use of this product are provided by the manufacturer.
Only use the air conditioner as instructed in this booklet. These instructions are not intended to
cover every possible condition and situation. As with any electrical household appliance, common sense
and caution are therefore always recommended for installation, operation and maintenance.
GENERAL INFORMATION
1
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IOM-Owner’s Manual - VFH-B 18/24 Series
THE INSTRUCTIONS BEFORE USE GENERAL INFORMATION
WARNING
If you have a burning smell or
★ ★
smoke,please turn off the power
supply and contact your service
center.
The unit may be damaged,and
may cause electric shock or fire.
Power must match the circuit
★
to prevent fire.
Otherwise, it can cause electric
shock or fire.
★ ★
Otherwise,the accumulated dust
may cause overheating or fire.
This unit must match the circuit
breaker to assure it has enough
capacity. The unit will be turned
on or off according to your
requirement automatically, please
do not turn on or turn off the unit
frequently,this could damage the
unit.
Disconnect the power supply if
taking the air conditioner out of
use.
Never cut off or damage power
★
cables and control wires. If the
power cable and signal control
wire are damaged,
replacement must be
performed by professional.
Never damage the electric wire
or use the electric wire which
is not sized and matched
appropriately.
Otherwise,it will cause overheating
or fire.
When cleaning,it is necessary
★ ★
to turn unit off and disconnect
the power supply.
Cut off power supply
Otherwise,it may cause electric
shock or damage.
Please insure that the insta-
★ ★
lled stand is strong enough.
If it is damaged, it may lead to the
unit falling and cause injury and
damage.
Rated voltage of this air conditioner is 208/230V, 60Hz, The
compressor will vibrate sharply
if the voltage is too low, or too
high. Electrical components are
easy to damage if the voltage is
too high.
Don't step on the top of the
outdoor unit or place anything
on it.
Don't attempt to repair the air
★
conditioner by yourself.
The wrong repair will lead to an
electric shock or fire. You should
contact your service center to
repair.
Grounding: The unit must be
★
reli-ably grounded. The
grounding cable shall be
connected to the spec-ial
grounding device in the
construction.
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IOM-Owner’s Manual - VFH-B 18/24 Series
NAME OF PARTS GENERAL INFORMATION
A_VFH18DB-1
WARNING
Be sure to cut off the power supply before cleaning the air conditioner; otherwise electric
shock may happen.
Spraying your air conditioner with water may cause the risk of electric shock. Make sure
not to use a hose on your air conditioner.
Volatile liquids such as thinner or gasoline will cause damage to the appearance of air
conditioner. (Only use soft dry cloth or moist cloth to clean the air conditioner cabinet).
This product must not be disposed together with the domestic waste.
This product has to be disposed at an authorized facility for recycling of electrical and
electronic appliances.
The temperature of refrigerant circuit will be high,please keep the interconnection cable
away from the copper tube.
OUTDOOR UNIT
No. Description
1 Air outlet grille
2 Valve
1
Note: The above figures are only intended as a simple
diagram of the appliance and may not correspond to the
appearance of the units that have been purchased.
2
A-VFH24TB-1
WARNING
If the supply cord is damaged, it must be replaced by the service agent or a similarly qualified person in order
to avoid a hazard.
Be sure to cut off the power supply before cleaning the air conditioner; otherwise electric shock may happen.
Spraying your air conditioner with water may cause the risk of electric shock. Make sure not to use a hose on
your air conditioner.
Volatile liquids such as thinner or gasoline will cause damage to the appearance of air conditioner. (Only use
soft dry cloth moist cloth clean the air conditioner cabinet).
Do not dispose this product as unsorted municipal waste. Collection of such waste separately for special
treatment is necessary.
The temperature of refrigerant circuit will be high, please keep the interconnection cable away from the copper
tube.
1
OUTDOOR UNIT
No. Description
1 Air outlet grille
2 Valve
Note: The above figures are only intended to be a simple
diagram of the appliance and may not correspond to
the appearance of the units that have been purchased.
2
3
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IOM-Owner’s Manual - VFH-B 18/24 Series
TECHNICAL DATA GENERAL INFORMATION
MODE
Electrical data
Electricity supply
Fuse or air switch
Minimum power cord section
Size and clearance
L
P
L
P
H
H
A_VFH18DB-1
208/230V,60HZ
25
2.1
35
14-1/4
27-1/2
mm
in
in
in
TECHNICAL DATA GENERAL INFORMATION
MODE
Electrical data
Electricity supply
Fuse or air switch
Minimum power cord section
Size and clearance
L
P
L
P
H
H
A-VFH24TB-1
208/230V,60HZ
30
3.3
36-1/4
15
31-1/8
mm
in
in
in
2
2
OUTDOOR UNIT WORKING TEMPERATURE RANGE GENERAL INFORMATION
c
Maximum cooling
Maximum heating
OutdoorsideDB/WB( )
48(118.4°F)/-
27(80.6°F)/-
4
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IOM-Owner’s Manual - VFH-B 18/24 Series
ELECTRICAL CONNECTIONS INSTALLER
A-VFH18DB-1
A-VFH24TB-1
1. Remove the handle at the right side plate of the outdoor
unit (one screw).
2. Remove the cable clamp, connect the power connection
cable with the terminal at the row of connection and affix
the connection. The fitting line distributing must be
consistent with the indoor unit. Wiring should match that
of indoor unit.
3. Affix power connection wire by wire clamp.
4. Ensure wire has been firmly attached.
5. Install the handle.
Including a circuit breaker with suitable
capacity, please note the following table.
Circuit breaker should include thermal
overload, it can protect the circuit-short and
overload. (Caution: please do not use fuse
only to protect the circuit)
A-VFH18DB-1
L1
L2
Power cord
To unit A
connecting
cable
To unit B
connecting
cable
To the power supply
Air-conditioner Circuit breaker capacity
A-VFH18DB-1
25A
A-VFH24TB-1 30A
An all-pole disconnection switch having a contact
separation of at least 3mm in all pole should be
connected in fixed wiring.
Wrong wire connection may cause malfunction or
damage to some electric components. After
attaching cable, ensure that leads between
connection to fixed point have some space.
The connection pipes and the connecting wires of
the unit A and unit B must correspond to each other.
The appliance shall be installed in accordance with
national wiring regulations.
Note: the above figures are only intended to be a simple
diagram of the appliance and may not correspond to the
appearance of the units that have been purchased.
L1 L2
L2
L1
A-VFH24TB-1
L1 L2
Power cord
To unit A
connecting
cable
To unit B
connecting
cable
To unit C
connecting
cable
To the power supply
L1 L2
L2
L1
C
C
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IOM-Owner’s Manual - VFH-B 18/24 Series
INSTALLING THE OUTDOOR UNIT INSTALLER
Location
Use bolts to secure the unit to a flat, solid floor.
When mounting the unit on a wall or the roof, make
sure the support is firmly secured so that it cannot
move in the event of intense vibrations or a strong
wind.
Do not install the outdoor unit in pits or air vents
●
Installing the pipes
Use suitable connecting pipes and equipment for
the refrigerant R410A.
Models(m) 18Kx2
Max. connection pipe length
Max. connection pipe length
(Simple one indoor unit)
The refrigerant pipes must not exceed the maximum
heights 10m(18Kx2&24Kx3).
Wrap all the refrigerant pipes and joints.
Tighten the connections using two wrenches working in opposite directions.
20
10
24Kx3
60
20
Caution: Installation Must be Performed in
Accordance with the NEC/CEC by Authorized
Personnel Only.
Install the drain fitting and the drain hose
(for model with heat pump only)
Condensation is produced and flows from the outdoor unit when the appliance is operating in the
heating mode. In order not to disturb neighbours
and to respect the environment,install a drain fitting
and a drain hose to channel the condensate water.
Install the drain fitting and rubber washer on the
outdoor unit chassis and connect a drain hose to it
as shown in the figure.
EVACUATION INSTALLER
Humid air left inside the refrigerant circuit can cause compressor malfunction. After having connected the indoor
and outdoor units, bleed the air and humidity from the
refrigerant circuit using a vacuum pump.
(1) Unscrew and remove the caps from the 2-way and 3-
way valves.
(2) Unscrew and remove the cap from the service valve.
(3) Connect the vacuum pump hose to the service valve.
(4) Operate the vacuum pump for 10-15 minutes until an
absolute vacuum of 10 mm Hg has been reached.
(5) With the vacuum pump still in operation, close the
low-pressure knob on the vacuum pump coupling.
Stop the vacuum pump.
(6) Open the 2-way valve by 1/4 turn and then close it
after 10 seconds. Check all the joints for leaks using
liquid soap or an electronic leak device.
(7) Turn the body of the 2-way and 3-way valves. Discon nect the vacuum pump hose.
(8) Replace and tighten all the caps on the valves.
18 and 24K units use adapters that need to be
installed at the indoor and outdoor units.
conversion joint
Service
inlet
(2)Turn
(8) Secure
Refrigerant fluid di
3-way valve
Vacuum pump Vacuum pump
Vacuum pump
INDOOR
UNIT
rection of fiow
(7)Turn to open fully
Valve cap
(8) Secure
2-way valve
(6) Open by 1/4 turn
(7)Turn to open fully
(2)Turn
alve cap
V
(2)Turn
(8) Secure
Connect to the
indoor unit
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IOM-Owner’s Manual - VFH-B 18/24 Series
MAINTENANCE INSTALLER
Use suitable instruments for the refrigerant R410A.
Do not use any other refrigerant than R410A.
●
Do not use mineral oils to clean the unit.
INSTALLATION DIMENSION DIAGRAM INSTALLER
The installation must be done by trained and qualified service personnel with reliability according to this
manual.
Contact service center before installation to avoid the malfunction due to unprofessional installation.
When picking up and moving the units, you must be guided by trained and qualified person.
Ensure that the recommended space is left around the appliance.
A-VFH18DB-1
50c
Space to the cover
or above
30cm
Space to the cover
or above
200cm
(Air outlet side)
50c
m
or more
Space to the cover
A-VFH24TB-1
or above
30cm
Space to the cover
or above
200cm
(Air outlet side)
m
or more
30cm
(Air inlet side)
50c m
or above
Spa ce to the wal l
30cm
(Air inlet side)
or above
or above
50c m
or abo ve
Spa ce to the w all
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IOM-Owner’s Manual - VFH-B 18/24 Series
CHECK AFTER INSTALLATION INSTALLER
Check Items
Is the unit firmly mounted?
Has the gas leakage been checked?
Is the thermal insulation of the unit
sufficient?
Is the drainage smooth?
Does the power supply voltage match
the rated voltage specified on the
nameplate?
Are the lines and pipelines correctly
installed?
Has the unit been safely grounded?
Problems Owing to Improper Installation
The unit may drop, vibrate or make noises
May cause unsatisfactory cooling (heating)
effect or damage to compressor
May cause condensation and water dripping
May cause condensation and water dripping
The unit may break down or the components
may burn out
The unit may break down or the components
may burn out
Risk of electrical leakage
Are the models of lines in conformity
with requirements?
Are there any obstacles near the air
inlet and outlet of the indoor and outdoor units?
Have the length of refrigerating pipe
and refrigerant charge amount been
recorded?
The unit may break down or the components
may burn out
The unit may break down or the components
may burn out
This is a critically charged product
and excess refrigerant is determined
by refrigerant line length.
8
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IOM-Owner’s Manual - VFH-B 18/24 Series
Congratulations on purchasing your new HVAC equipment. It’s been
designed for long life and reliable service, and is backed by one of the
strongest warranties in the industry. Your unit automatically qualifies
for the warranty coverage listed below, providing you keep your
proof of purchase (receipt) for the equipment and meet the warranty
conditions.
LIMITED ONE (2) YEAR EXPRESS WARRANTY
MARS warrants all parts of the VMH Series Ductless Mini-Split to be free
from defects in workmanship and materials for normal use and maintenance
for two (2) years from the date of purchase by the original consumer for the
original installation. This Express Limited Warranty applies only when the
Ductless Mini-Split is installed as a complete matched system: outdoor unit
and indoor unit, and only when the system is installed per MARS installation
instructions and in accordance with all local, state and national codes for
normal use.
LIMITED 3rd to 7th YEAR EXPRESS WARRANTY
The compressor only is warranted to be free from defects in workmanship
and materials for normal use and maintenance for five (5) additional years,
for a total of seven (7) years from the date of purchase by the original
consumer for the original installation. This Express Limited Warranty applies
only when the Ductless Mini-Split is installed as a complete matched
system: outdoor unit and indoor unit, and only when the system is installed
per MARS installation instructions and in accordance with all local, state
and national codes for normal use.
EXCEPTIONS
The Limited Express Warranty does not cover normal maintenance—
MARS recommends that regular inspection/maintenance be performed at
least once a season and proof of maintenance be kept. Additionally, labor
charges, transportation charges for replacement parts, replacement of
refrigerant or filters, any other service calls/repairs are not covered by this
Limited Warranty. It also does not cover any portion or component of the
system that is not supplied by MARS, regardless of the cause of failure of
such portion or component.
CONDITIONS FOR WARRANTY COVERAGE
• Unit must be operated according to MARS operating instructions
included with the unit and cannot have been subjected to accident,
alteration, improper repair, neglect or misuse, or an act of God (such as
a flood)
• Installation was done by a trained, licensed or otherwise qualified HVAC
dealer/contractor
• Performance cannot be impaired by use of any product not authorized
by MARS, or by any adjustments or adaptations to components
• Serial numbers and/or rating plate have not been altered or removed
• Damage has not been a result of inadequate wiring or voltage
conditions, use during brown-out conditions, or circuit interruptions
• Air flow around any section of the unit has not been restricted
• Unit remains in the original installation
• Unit was not purchased over the internet
DURATION OF WARRANTY & REGISTRATION
The warranty begins on the date of purchase by the original
consumer. The consumer must retain a receipted bill of sale
as proof of warranty period. Without this proof, the express
warranty begins on the date of shipment from the factory.
Please visit www.marsdelivers.com
to register your new product
REMEDY PROVIDED BY THE LIMITED EXPRESS WARRANTY
The sole remedy under the Limited Warranty is replacement of the defective
part. If replacement parts are required within the period of this warranty,
MARS replacement parts shall be used; any warranty on the replacement
part(s) shall not affect the applicable original unit warranty. Ready access
to the unit for service is the owner’s responsibility. Labor to diagnose and
replace the defective part is not covered by this Limited Express Warranty.
If for any reason the replacement part/product is no longer available during
the warranty period, MARS shall have the right to allow a credit in the
amount of the current suggested retail price of the part/product instead of
providing repair or replacement.
LIMITATION OF LIABILITY
1. There are no other express or implied warranties. MARS makes no
warranty of merchantability. We do not warrant that the unit is suitable
for any particular purpose or can be used in buildings or rooms of
any particular size or condition except as specifically provided in this
document. There are no other warranties, express or implied, which
extend beyond the description in this document.
2. All warranties implied by law are limited in duration to the seven-
year term of the parts warranty. Your exclusive remedy is limited to
the replacement of defective parts. We will not be liable for any
consequential or incidental damages caused by any defect in this
unit.
3. This warranty gives you specific legal rights and you may also have
other rights which vary from state to state. Some states do not allow
limitation on how long an implied warranty lasts or do not allow the
exclusion or limitation of incidental or consequential damages, so the
above limitations or exclusions may not apply to you.
4. No warranties are made for units sold outside the continental United
States and Canada. Your distributor or final seller may provide a
warranty on units sold outside these areas.
5. MARS will not be liable for damages if our performance regarding
warranty resolution is delayed by events beyond our control including
accident, alteration, abuse, war, government restrictions, strikes, fire,
flood, or other acts of God.
HOW TO OBTAIN WARRANTY SERVICE OR PARTS
If you have a warranty claim, notify your installer promptly. If the installer
does not remedy your claim, write to MARS, 1900 Wellworth Ave., Jackson
MI 49203. Enclose a report of inspection by your installer or service person.
Include model number, serial number, and date of purchase.
Owner responsibilities are set forth in the
instruction manual—read it carefully.
LIMITED EXPRESS WARRANTY
VFH_WARRANTY_4/2017
KEEP THIS INFORMATION AS A RECORD OF YOUR PURCHASE
Outdoor Unit: Model No. _______________ Serial No. _______________
Indoor Unit 1: Model No. _______________ Serial No. _______________
Indoor Unit 2: Model No. _______________ Serial No. _______________
Indoor Unit 3: Model No. _______________ Serial No. _______________
Indoor Unit 4: Model No. _______________ Serial No. _______________
Indoor Unit 5: Model No. _______________ Serial No. _______________
Date of Purchase
______________________________________________________
9
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IOM-Owner’s Manual - VFH-B 18/24 Series
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1900 Wellworth Ave., Jackson, MI 49203 • Ph. 517-787-2100 • www.marsdelivers.com
3/2017
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