mars MCD60D1A Split Horizontal Vertical Duct Air Conditioner Indoor Unit Owner’s Manual

mars MCD60D1A Split Horizontal Vertical Duct Air Conditioner Indoor Unit

Owner’s Manual

SAFETY PRECAUTIONS

Read Safety Precautions Before Operation and Installation

Incorrect installation due to ignoring instructions can cause serious damage or injury.
The seriousness of potential damage or injuries is classified as either a WARNING or CAUTION.

WARNINGS FOR PRODUCT USE

• If an abnormal situation arises (like a burning smell), immediately turn off the unit and disconnect the Call your dealer for instructions to avoid electric shock, fire or injury.
• Do not insert fingers, rods or other objects into the air inlet or This may cause injury, since the fan may be rotating at high speeds.
• Do not use flammable sprays such as hair spray, lacquer or paint near the This may cause fire or combustion.
• Do not operate the air conditioner in places near or around combustible Emitted gas may collect around the unit and cause explosion.
• Do not operate your air conditioner in a wet room such as a bathroom or laundry Too much exposure to water can cause electrical components to short circuit.
• Do not expose your body directly to cool air for a prolonged period of
• Do not allow children to play with the air Children must be supervised around the unit at all times.
• If the air conditioner is used together with burners or other heating devices, thoroughly ventilate the room to avoid oxygen
• In certain functional environments, such as kitchens, server rooms, , the use of speciallydesigned air-conditioning units is highly recommended.
• Improper installation, adjustment, alteration, service or maintenance can cause property damage, personal injury or loss of Installation and service must be performed by a licensed professional HVAC installer or equivalent, service agency, or the gas supplier.

CLEANING AND MAINTENANCE WARNINGS

• Turn off the device and disconnect the power before Failure to do so can cause electrical shock.
• Do not cleanthe air conditioner with excessive amounts of
• Do no t **** clean the air conditioner with combustible cleaning agents. Combustible cleaning agents can cause fire or deformation.

CAUTION

• Turn off the air conditioner and disconnect the power if you are not going to use it for a long
• Turn off and unplug the unit during
• Make sure that water condensation can drain unhindered from the
• Do not operate the air conditioner with wet This may cause electric shock.
• Do no t use device for any other purpose than its intended
• Do no t climb onto or place objects on top of the outdoor
• Do no t allow the air conditioner to operate for long periods of time with doors or windows open, or if the humidity is very
• As with any mechanical equipment, contact with sharp sheet metal edges can result in personal Take care while handling this equipment and wear gloves and protective clothing.

ELECTRICAL WARNINGS

• Only use the specified power If the power cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard.
• Keep power plug Remove any dust or grime that accumulates on or around the plug. Dirty plugs can cause fire or electric shock.
• Do not pull power cord to unplug Hold the plug firmly and pull it from the outlet. Pulling directly on the cord can damage it, which can lead to fire or electric shock.
• Do not modify the length of the power supply cord or use an extension cord to power the unit.
• Do not share the electrical outlet with other appliances. Improper or insufficient power supply can cause fire or electrical
• The product must be properly grounded at the time of installation, or electrical shock may
• For all electrical work, follow all local and national wiring standards, regulations, and the Installation Manual. Connect cables tightly, and clamp them securely to prevent external forces from damaging the Improper electrical connections can overheat and cause fire, and may also cause shock. All electrical connections must be made according to the Electrical Connection Diagram located on the panels of the indoor and outdoor units.
• All wiring must be properly arranged to ensure that the control board cover can close If the control board cover is not closed properly, it can lead to corrosion and cause the connection points on the terminal to heat up, catch fire, or cause electrical shock.
• If connecting power to fixed wiring, an all-pole disconnection device which has at least 3mm clearances in all poles, and have a leakage current that may exceed 10mA, the residual current device(RCD) having a rated residual operating current not exceeding 30mA, and disconnection must be incorporated in the fixed wiring in accordance with the wiring

TAKE NOTE OF FUSE SPECIFICATIONS

The air conditioner’s circuit board (PCB) is designed with a fuse to provide overcurrent protection. The specifications of the fuse are printed on the circuit board ,examples of such are T5A/250VAC and T10A/250VAC.

WARNINGS FOR PRODUCT INSTALLATION

1. Installation must be performed by an authorized dealer or Defective installation can cause water leakage, electrical shock, or fire.
2. Installation must be performed according to the installation Improper installation can cause water leakage, electrical shock, or fire.(In North America,installation must be performed in accordance with the requirement of NEC and CEC by authorized personnel only.)
3. Contact an authorized service technician for repair or maintenance of this This appliance shall be installed in accordance with national wiring regulations.
4. Only use the included accessories, parts, and specified parts for Using non-standard parts can cause water leakage, electrical shock, fire, and can cause the unit to fail.
5. Install the unit in a firm location that can support the unit’s weight. If the chosen location cannot support the unit’s weight, or the installation is not done properly, the unit may drop and cause serious injury and damage.
6. Install drainage piping according to the instructions in this manual. Improper drainage may cause water damage to your home and property.
7. For units that have an auxiliary electric heater, do not install the unit within 1 meter (3 feet) of any combustible materials.
8. Do not install the unit in a location that may be exposed to combustible gas leaks. If combustible gas accumulates around the unit, it may cause fire.
9. Do not turn on the power until all work has been completed.
10. When moving or relocating the air conditioner, consult experienced service technicians for disconnection and reinstallation of the unit.
11. Follow all safety codes. Wear safety glasses, protective clothing, and work gloves. Use quenching cloth for brazing operations. Have fire extinguisher available.
12. Excessive Weight Hazard – Use two or more people when moving and installing the unit. Failure to do so can result in back or other type of injury.
13. Take precautions to ensure Aluminum tubes do not come in direct contact or allow for condensate run off with a dissimilar metal. Dissimilar metals can cause galvanic corrosion and possible premature failure.
14. Failure to follow this caution may result in personal injury.
15. Sheet metal parts may have sharp edges or burrs. Use care and wear appropriate protective clothing and gloves when handling parts.

INTRODUCTION

Use this instruction manual to install indoor coil on multi position furnaces. The coil is enclosed in a casing.

Typical Coil Installation on Furnace

INSTALLATION

Upflow coil installation

The cased coil is designed to fit furnaces of the same width.

1. Set coil in place on upflow furnace discharge air
2. Ensure coil is level for proper condensate Do not tip coil toward condensate drain. Coil casing need not be fastened or screwed to furnace.

When installing wider coil on narrow furnace, create field fabricated adapter

Adapter(s) Installation When Coil Overhangs Furnace
NOTE: On upflow installations where the indoor coil is placed in an unconditioned space, a 6” wide piece of insulation should be applied and wrapped around the outside of coil casing and supply duct contact point.
NOTE: Consult the furnace installation instructions for any special requirements when installing the coil to the furnace.

Downflow Coil Installation IMPORTANT: Installing “A” coils rotated 90 degrees from the front of the furnace in downflow applications can cause water blow off or coil freeze up. This is due to the concentration of air on one coil slab or lack of air on the opposite coil slab. If the airflow is high due to ductwork or other causes, and there is a chance for water blow off, it is recommended that a 4-in. minimum field-supplied adapter be placed between the coil and the furnace to allow the air to distribute evenly to both coil slabs.

Set cased coil on supply duct
Place field fabricated 4-in. minimum adapter on coil casing. Adapter should be tapered to fit coil/furnace combination when one of them is larger than the
Set furnace on
NOTE: In downflow installation with a 4-way multipoise furnace, break off perforated duct flanges on furnace. See furnace installation instructions

Horizontal Coil Installation

The unit can be installed on a work platform, secured to roof truss in attic, suspended from hangers on floor joists in crawl space, or installed on blocks. It is designed to allow airflow in either direction, to mate with horizontal- left or horizontal-right furnace installations. Ensure

coil cabinet is level side to side and front to back. It is allowable to add up to 1/2-in. additional slope over length and depth of coil cabinet in the direction of drain pan connection.

Horizontal Right Installation

1. Use field fabricated attachment plates to secure coil to
2. Use self-tapping screws to mount attachment plates to coil
3. Connect furnace snugly against coil
4. Use self-tapping screws to attach
5. Seal joint between coil casing and furnace to create an air tight seal using locally approved
6. Use cork tape to create air seal between the undersides of the pan extension and front of the vertical drain pan as shown below.
7. Install included condensate pan extension and two corner screws as shown below.
8. If coil is wider than furnace, use 4-in minimum transition and self tapping screws to attach

Horizontal Left Installation

1. Unbend the 4 tabs at the right side of the casing.
2. Connect furnace snugly against coil
3. Use self-tapping screws to attach
4. Seal joint between coil casing and furnace to create air tight seal using locally approved

REFRIGERANT LINE CONNECTIONS

NOTE: Factory nitrogen charge may escape past rubber plugs during storage. This does not indicate a leaking coil nor warrant return of the coil.
Size and install refrigerant lines according to information provided with outdoor unit. Coil connection tube sizes are shown in Table .
Route refrigerant lines to the coil in a manner that will not obstruct service access to the unit or removal of the filter.
Do not use damaged, dirty, or contaminated tubing because it may plug refrigerant
flow-control device. ALWAYS evacuate the coil and field-supplied tubing before opening outdoor unit service valves.

The coil can be connected to outdoor units using field-supplied tubing of refrigerant grade.
Always evacuate tubing and reclaim refrigerant when making connections or flaring tubing.
Leak check connections before insulating entire suction line.
See Table for coil connection tube size.

1. Remove cabinet access
2. Remove rubber plugs, suction plug then liquid plug, from coil stubs using a pulling and twisting Hold coil stubs steady to avoid bending or distorting.
3. Remove tubing plate with rubber grommets and slide plate with grommets onto the refrigerant lines (field line-set), away from braze
4. Fit refrigerant lines into coil Wrap a heat sinking material such as a wet cloth behind braze joints.
5. Wrap TXV and nearby tubing with a heat-sinking material such as a wet
6. Use 1/2 psig Nitrogen purge in the suction and out the the liquid
7. Braze using a Sil-Fos or Phos-copper Do not use soft solder.
8. After brazing, allow joints to cool. Carefully remove TXV bulb insulation and verify that the TXV bulb is securely fastened with hose Tighten screw a half-turn past hand tight with TXV bulb placed in the indentation with full contact with the vapor line tube.
9. Re-wrap TXV bulb with insulation.
10. Leak check connections before insulating entire suction
11. Slide tubing plate with rubber grommets over Position tubing at center of each grommet to ensure an air seal around the tube. Reinstall cabinet door.

REFRIGERANT METERING DEVICE

These Coils have a factory installed hard shut-off TXV designed only for use with R-410A refrigerant. Use only with outdoor units designed for R-410A. NOTE: ALL TXV’S HAVE PRESET SUPERHEAT SETTINGS AND ARE FIELD NON-ADJUSTABLE.

CAUTION

Failure to follow this caution may result in product damage.
DO NOT BURY MORE THAN 36 IN. OF REFRIGERANT TUBING IN GROUND. If anysection of tubing is buried, there must be a 6 in. vertical rise to the valve connections on the outdoor unit. If more than the recommended length is buried, refrigerant
may migrate to cooler buried section during extended periods of unit shutdown, causing refrigerant slugging and possible compressor damage at start-up

The coil is designed to dispose of accumulated water through built-in condensate drain fittings. It is recommended that PVC fittings be used on the condensate pan. Do not over-tighten. Finger tighten plus 1-1/2 turns. Be sure to install plastic plug in unused condensate drain fitting. Two 3/4 inch female threaded pipe connections are provided in each coil condensate pan.
A trap is not necessary on the condensate line if on the supply air side of furnace. Consult local codes for additional restrictions or precautions. If local codes require a trap then the following guidelines are suggested to assure proper drainage. Install a trap in condensate line ofoil as close to the coil as possible. Make trap at least 3 inches (76 mm) deep and no higher than the bottom of unit condensate drain
opening . Pitch condensate line 1 inch (25.4 mm) for every 10 ft. of length to an open drain or sump. Make sure that the outlet of each trap is below its connection to condensate pan to prevent condensate from overflowing the drain pan. Prime all traps, test for leaks, and insulate traps and lines if located above a living area.

Owner’s and Installation Manual –

NOTE: If unit is located in or above a living space, where damage may result from condensate overflow, a field-supplied, external condensate pan should be installed underneath the entire unit, and a secondary condensate line (with appropriate trap) should be run from the unit into the pan. Any condensate in this external condensate pan should be drained to a noticeable place. As an alternative to using an external condensate pan, some localities may allow the running of a separate 3/4 inch (19 mm) condensate line (with appropriate trap) per
local code to a place where the condensate will be noticeable. The owner of the structure must be informed that when condensate flows from secondary drain or external condensate pan, the unit requires servicing or water damage will occur. To further protect against water damaqe. install a float switch to shut the unit off if the water in the secondary pan gets too high.

 WASTE LINE CONNECTION

If the condensate line is to be connected to a waste (sewer) line, an open trap must be in stalled ahead of the waste line to prevent escape of sewer gases.

CARE AND MAINTENANCE

To continue high performance and minimize possible equipment failure, it is essential that periodic maintenance be performed on this equipment. Consult your local dealer as to the proper frequency of maintenance, but it should be done at least annually.
The ability to properly perform maintenance on this equipment requires certain mechanical skills and tools. If you do not possess these, contact your dealer for maintenance. The only consumer service recommended or required is filter replacement or cleaning on a monthly basis.

LIMITED EXPRESS WARRANTY

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 TEN (10) YEAR EXPRESS WARRANTY

MARS warrants all parts including the compressor of the VCD-SA Series Air Handler and Side Discharge Condenser to be free from defects in workmanship and materials for normal use and maintenance for ten (10) years from the date of purchase by the original consumer for the original installation.

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.

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 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 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 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 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

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.

Due to ongoing product improvements, specifications and dimensions are subject to change and correction without notice or incurring obligations. Determining theapplication and suitability for use of any product is the responsibility of the installer.
Additionally, the installer is responsible for verifying dimensional data on the actual product prior to beginning any installation preparations.
Incentive and rebate programs have precise requirements as to product performance and certification. All products meet applicable regulations in effect on date of manufacture;
however, certifications are not necessarily granted for the life of a product.
Therefore, it is the responsibility of the applicant to determine whether a specific model qualifies for these incentive/rebate programs.

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