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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 FIVE (5) YEAR EXPRESS WARRANTY

MARS warrants all parts of the SVH Series Ductless Mini-Split to be free from 

defects in workmanship and materials for normal use and maintenance for five 

(5) year 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 2nd to 5th YEAR EXPRESS WARRANTY

The compressor only is warranted to be free from defects in workmanship 

and materials for normal use and maintenance for four additional years, for a 

total of five (5) 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

.

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 five-

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

SVHxxSB_WARRANTY_1/2020

KEEP THIS INFORMATION AS A RECORD OF YOUR PURCHASE

 

INDOOR UNIT 

OUTDOOR UNIT 

INSTALLATION

 

Model Number 

Model Number 

Installer Name

 

Serial Number 

Serial Number 

Phone No./Contact Info

 

            Date of Purchase  

Date Installation Completed

Remember to retain your bill of sale as proof of warranty period.

Please visit www.marsdelivers.com 

to register your new product

Summary of Contents for Comfort-Aire Century SVH-SB Series

Page 1: ...www marsdelivers com Owner s Installation Manual SVH SB Series Inverter Single Zone Ductless Mini Split SVH09SB 0 SVH09SB 1 SVH12SB 0 SVH12SB 1 SVH18SB 1 SVH24SB 1 ...

Page 2: ... Owner s Manual Table of Contents Safety Precautions 03 Care and Maintenance 11 Troubleshooting 13 1 Indoor unit display 07 2 Operating temperature 08 3 Other features 09 4 Setting angle of airflow 10 5 Manual operation without Remote 10 ...

Page 3: ...nt indoor unit 24 Outdoor Unit Installation 25 1 Select installation location 25 2 Install drain joint 26 3 Anchor outdoor unit 26 4 Connect signal and power cables 28 Refrigerant Piping Connection 29 A Note on Pipe Length 29 B Connection Instructions Refrigerant Piping 29 1 Cut pipe 29 2 Remove burrs 30 3 Flare pipe ends 30 4 Connect pipes 30 Air Evacuation 32 1 Evacuation Instructions 32 2 Note ...

Page 4: ... ALL INVERTER MINI SPLITS REQUIRE 14 4 STRANDED WIRE BETWEEN THE INDOOR AND OUTDOOR UNITS NO EXCEPTIONS 14 AWG 4 C TRAY CABLE A14 4SRBTHHNBK 14 AWG 19 0147 BC 4 C THHN CONDUCTORS POWER CONTROL TRAY CABLE TYPE TC CABLE FOR INSTALLATION IN ACCORDANCE WITH ARTICLE 336 AND OTHER APPLICABLE PARTS OF THE NATIONAL ELECTRICAL CODE 600V UL E123517 DIRECT BURIAL SUNLIGHT RESISTANT PVC JACKET 10 25 16 MADE I...

Page 5: ... like a burning smell immediately turn off the unit and disconnect the power 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 outlet 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 unit This may cause fire or combustio...

Page 6: ...share the electrical outlet with other appliances Improper or insufficient power supply can cause fire or electrical shock The product must be properly grounded at the time of installation or electrical shock may occur 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 for...

Page 7: ...tall the unit within 3 feet of any combustible materials 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 Do not turn on the power until all work has been completed When moving or relocating the air conditioner consult experienced service technicians for disconnection and reinstallation of the unit H...

Page 8: ...000Btu h units 43 9000Btu h and 12000Btu h units 56 12000Btu h and 18000Btu h units 26m 18000Btu h and 24000Btu h units 35m Reusable mechanical connectors and flared joints are not allowed indoors EN Standard Requirements Mechanical connectors used indoors shall have a rate of not more than 3g year at 25 of the maximum allowable pressure When mechanical connectors are reused indoors sealing parts ...

Page 9: ... window A Display window D Display window B fresh defrost run timer Display window C for 3 seconds when FRESH SWING TURBO or SILENCE feature is turned on when Fresh feature is activated some units for 3 seconds when TIMER OFF is set FRESH SWING TURBO or SILENCE feature is turned off when defrosting cooling heating units when anti cold air feature is turned on when unit is self cleaning some units ...

Page 10: ...122 F 15 C 30 C 5 F 86 F 0 C 50 C 32 F 122 F 0 C 52 C 32 F 126 F For special tropical models 0 C 52 C 32 F 126 F For special tropical models 15 C 50 C 5 F 122 F For models with low temp cooling systems To further optimize the performance of your unit do the following Keep doors and windows closed Limit energy usage by using TIMER ON and TIMER OFF functions Do not block air inlets or outlets Regula...

Page 11: ... settings to stay comfortable This function can only be activated via remote control And the Sleep function is not available in FAN or DRY mode Press the SLEEP button when you are ready to go to sleep When in COOL mode the unit will increase the temperature by 1 C 2 F after 1 hour and will increase an additional 1 C 2 F after another hour When in HEAT mode the unit will decrease the temperature by...

Page 12: ...e of air flow To operate your unit manually 1 Open the front panel of the indoor unit 2 Locate the MANUAL CONTROL button on the right hand side of the unit 3 Press the MANUAL CONTROL button one time to activate FORCED AUTO mode 4 Press the MANUAL CONTROL button again to activate FORCED COOLING mode 5 Press the MANUAL CONTROL button a third time to turn the unit off 6 Close the front panel CAUTION ...

Page 13: ...ed cloths to clean the unit Do not use benzene paint thinner polishing powder or other solvents to clean the unit They can cause the plastic surface to crack or deform Do not use water hotter than 40 C 104 F to clean the front panel This can cause the panel to deform or become discolored Cleaning Your Air Filter CAUTION Do not touch air freshening Plasma filter for at least 10 minutes after turnin...

Page 14: ...e If you plan not to use your air conditioner for an extended period of time do the following Clean all filters Turn on FAN function until unit dries out completely Turn off the unit and disconnect the power Remove batteries from remote control Maintenance Pre Season Inspection After long periods of non use or before periods of frequent use do the following Check for damaged wires Clean all filter...

Page 15: ...s Troubleshooting Troubleshooting The unit changes from COOL HEAT mode to FAN mode The indoor unit makes noises A rushing air sound may occur when the louver resets its position A squeaking sound may occur after running the unit in HEAT mode due to expansion and contraction of the unit s plastic parts Both the indoor unit and outdoor unit make noises Low hissing sound during operation This is norm...

Page 16: ...t customer service center Provide them with a detailed description of the unit malfunction as well as your model number Troubleshooting Troubleshooting When troubles occur please check the following points before contacting a repair company Problem Possible Causes Solution Poor Cooling Performance Temperature setting may be higher than ambient room temperature Lower the temperature setting The hea...

Page 17: ...Poor heating performance The outdoor temperature is extremely low Use auxiliary heating device Cold air is entering through doors and windows Make sure that all doors and windows are closed during use Low refrigerant due to leak or long term use Check for leaks re seal if necessary and top off refrigerant Indicator lamps continue flashing The unit may stop operation or continue to run safely If th...

Page 18: ...ape Quantity PC Need to be installed on the back of main air filter by the authorized technician while installing the machine Mounting plate fixing screw Remote controller Fixing screw for remote controller holder optional Remote controller holder optional Drain joint for cooling heating models Seal for cooling heating models Mounting plate Manual Parts you must purchase separately Consult the dea...

Page 19: ... Plate Determine Wall Hole Position 1 2 3 Drill Wall Hole 4 Mount Indoor Unit STEP 8 Wrap Piping and Cable not applicable for some locations in the US Connect Piping Prepare Drain Hose Connect Wiring not applicable for some locations in the US 4 5 6 7 8 9 At least 6 15cm At least 6 15cm At least 6 15cm At least 64 162cm ...

Page 20: ...e requirement of local and national standards The installation may vary in different areas Wall Mounting Plate Power Cable Some Units Refrigerant Piping Signal Cable Remote Controller Drainage Pipe Louver Remote controller Holder Some Units Functional Filter On Back of Main Filter Some Units Front Panel Outdoor Unit Power Cable Some Units 1 2 3 4 5 6 7 8 9 10 11 1 2 1 2 3 4 6 7 8 9 10 11 Air break...

Page 21: ...ation subject to direct sunlight NOTE ABOUT WALL HOLE If there is no fixed refrigerant piping While choosing a location be aware that you should leave ample room for a wall hole see Drill wall hole for connective piping step for the signal cable and refrigerant piping that connect the indoor and outdoor units The default position for all piping is the right side of the indoor unit while facing the...

Page 22: ... process CAUTION When drilling the wall hole make sure to avoid wires plumbing and other sensitive components Φ NOTE When the gas side connective pipe is 16mm 5 8in or more the wall hole should be 90mm 3 54in Type A Type B Left rear wall hole 65mm 2 5in Right rear wall hole 65mm 2 5in Indoor unit outline 39mm 1 5in 39mm 1 5in 285mm 11 2in 47mm 1 85in 47mm 1 85in Model B Model A 148mm 5 8in 230mm 9...

Page 23: ... extremely careful not to dent or damage the piping while bending them away from the unit Any dents in the piping will affect the unit s performance Step 5 Connect drain hose By default the drain hose is attached to the left hand side of unit when you re facing the back of the unit However it can also be attached to the right hand side To ensure proper drainage attach the drain hose on the same si...

Page 24: ... THE MAIN POWER TO THE SYSTEM Step 6 Connect signal cable The signal cable enables communication between the indoor and outdoor units You must first choose the right cable size before preparing it for connection Cable Types Indoor Power Cable if applicable H05VV F or H05V2V2 F Outdoor Power Cable H07RN F Signal Cable H07RN F Minimum Cross Sectional Area of Power and Signal Cables For reference 10 ...

Page 25: ...he plastic panel on the back DRAIN HOSE MUST BE ON BOTTOM Make sure that the drain hose is at the bottom of the bundle Putting the drain hose at the top of the bundle can cause the drain pan to overflow which can lead to fire or water damage DO NOT INTERTWINE SIGNAL CABLE WITH OTHER WIRES While bundling these items together do not intertwine or cross the signal cable with any other wiring 2 Using ...

Page 26: ... pressure to the left and right hand sides of the unit The unit should not jiggle or shift 6 Using even pressure push down on the bottom half of the unit Keep pushing down until the unit snaps onto the hooks along the bottom of the mounting plate 7 Again check that the unit is firmly mounted by applying slight pressure to the left and the right hand sides of the unit If refrigerant piping is alrea...

Page 27: ...ly heavy winds See Figures below Strong wind Strong wind Strong wind If the unit is frequently exposed to heavy rain or snow Build a shelter above the unit to protect it from the rain or snow Be careful not to obstruct air flow around the unit If the unit is frequently exposed to salty air seaside Use outdoor unit that is specially designed to resist corrosion Wind Baffle Protected from prolonged ...

Page 28: ...ubber seal see Fig B do the following 1 Insert the drain joint into the hole in the base pan of the unit The drain joint will click in place 2 Connect a drain hose extension not included to the drain joint to redirect water from the unit during heating mode Seal Drain joint A B Base pan hole of outdoor unit Seal IN COLD CLIMATES In cold climates make sure that the drain hose is as vertical as poss...

Page 29: ...art 2 Pre drill holes for expansion bolts 3 Place a nut on the end of each expansion bolt 4 Hammer expansion bolts into the pre drilled holes 5 Remove the nuts from expansion bolts and place outdoor unit on bolts 6 Put washer on each expansion bolt then replace the nuts 7 Using a wrench tighten each nut until snug WARNING WHEN DRILLING INTO CONCRETE EYE PROTECTION IS RECOMMENDED AT ALL TIMES CAUTI...

Page 30: ...clamp down tightly 7 Insulate unused wires with PVC electrical tape Arrange them so that they do not touch any electrical or metal parts 8 Replace the wire cover on the side of the unit and screw it in place 1 Remove the wire cover from the unit by loosening the 3 screws 2 Dismount caps on the conduit panel 3 Temperarily mount the conduit tubes not included on the conduit panel 4 Properly connect ...

Page 31: ...tically reduce the heating efficiency of the unit The length of refrigerant piping will affect the performance and energy efficiency of the unit Nominal efficiency is tested on units with a pipe length of 16 5ft In North America the standard pipe length is 25 A minimum pipe run of 10 is required to minimize vibration excessive noise In special tropical area for the R290 refrigerant models no refri...

Page 32: ...alling into the pipe 2 Using a reamer or deburring tool remove all burrs from the cut section of the pipe Pipe Reamer Point down Step 3 Flare pipe ends Proper flaring is essential to achieve an airtight seal 1 After removing burrs from cut pipe seal the ends with PVC tape to prevent foreign materials from entering the pipe 2 Sheath the pipe with insulating material 3 Place flare nuts on both ends ...

Page 33: ...0 76 0 78 23 2 23 7 0 91 0 93 18 20 180 200kgf cm 32 39 320 390kgf cm 49 59 490 590kgf cm 57 71 570 710kgf cm 67 101 670 1010kgf cm Ø 9 52 Ø 0 375 Ø 12 7 Ø 0 5 Ø 16 Ø 0 63 Ø 19 Ø 0 75 1 Unscrew the cover from the packed valve on the side of the outdoor unit 2 Remove protective caps from ends of valves 3 Align flared pipe end with each valve and tighten the flare nut as tightly as possible by hand ...

Page 34: ...m for at least 15 minutes or until the Compound Meter reads 76cmHG 10 Pa 2 3 4 5 5 6 Close the Low Pressure side of the manifold gauge and turn off the vacuum pump 7 Wait for 5 minutes then check that there has been no change in system pressure 8 If there is a change in system pressure refer to Gas Leak Check section for information on how to check for leaks If there is no change in system pressur...

Page 35: ...u h and 24000Btu h ADDITIONAL REFRIGERANT PER PIPE LENGTH Connective Pipe Length m Air Purging Method Additional Refrigerant Standard pipe length Vacuum Pump N A Standard pipe length Vacuum Pump Liquid Side Ø 6 35 ø 0 25 R32 Pipe length standard length x 12g m Pipe length standard length x 0 13oZ ft R290 R290 Pipe length standard length x 10g m Pipe length standard length x 0 10oZ ft Liquid Side Ø...

Page 36: ... Method Using a soft brush apply soapy water or liquid detergent to all pipe connection points on the indoor unit and outdoor unit The presence of bubbles indicates a leak Leak Detector Method If using leak detector refer to the device s operation manual for proper usage instructions AFTER PERFORMING GAS LEAK CHECKS After confirming that the all pipe connection points DO NOT leak replace the valve...

Page 37: ...on the pressure of the refrigerant circuit will increase This may reveal leaks that were not present during your initial leak check Take time during the Test Run to double check that all refrigerant pipe connection points do not have leaks Refer to Gas Leak Check section for instructions 5 After the Test Run is successfully completed and you confirm that all checks points in List of Checks to Perf...

Page 38: ...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 ...

Page 39: ...THIS PAGE IS INTENTIONALLY LEFT BLANK ...

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