Carrier 37MARA Installation Instruction

Outdoor unit single zone ductless system sizes 09k-36k

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37MARA

Outdoor Unit Single Zone Ductless System

Sizes 09K- 36K

Fig. 1 — Sizes 09K to 36K

NOTES: Read the entire instruction manual before starting the

installation.

Images are for illustration purposes only. Actual

models may differ slightly.

Installation Instruction

Specifications subject to change without notice.

TABLE OF CONTENTS

SAFETY CONSIDERATIONS........................................................2

ACCESSORIES................................................................................10

INSTALLATION .............................................................................11

DIMENSIONS..................................................................................11

CLEARANCES ................................................................................15

A. INSTALLATION INSTRUCTION.............................................16

B. REFRIGERANT CONNECTION INSTRUCTIONS .................21

C. WIRING INSTRUCTION ...........................................................23

D. AIR EVACUATION ...................................................................26

E. TEST RUN...................................................................................27

CARE AND MAINTENANCE........................................................27

TROUBLESHOOTING ...................................................................28

ERROR CODES...............................................................................28

DUCTLESS START-UP CHECKLIST - Single Zone ....................29

PAGE

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Summary of Contents for Carrier 37MARA

Page 1 37MARA Outdoor Unit Single Zone Ductless System Sizes 09K- 36K Installation Instruction TABLE OF CONTENTS PAGE SAFETY CONSIDERATIONS............2 ACCESSORIES................10 INSTALLATION ................11 DIMENSIONS..................11 CLEARANCES ................15 A. INSTALLATION INSTRUCTION..........16 B. REFRIGERANT CONNECTION INSTRUCTIONS ....21 C. WIRING INSTRUCTION ............23 D. AIR EVACUATION ..............26 E.
Page 2 37MARAQ: Installation Instructions SAFETY CONSIDERATIONS WARNING Installing, starting up, and servicing air- conditioning equipment can be hazardous due to system pressures, electrical components, and equipment location (roofs, elevated structures, etc.). PERSONAL INJURY AND PROPERTY DAMAGE HAZARD Only trained, qualified installers and service mechanics should install, For continued performance, reliability, and safety, the only start- up, and service this equipment.
Page 3 37MARAQ: Installation Instructions WARNING CAUTION ELECTRICAL SHOCK HAZARD EQUIPMENT DAMAGE HAZARD Failure to follow this warning could result in personal injury or Failure to follow this caution may result in equipment damage or death. improper operation. Before installing, modifying, or servicing system, the main Do not bury more than 36 in.
Page 4 37MARAQ: Installation Instructions 1. Installation (where refrigerant pipes are allowed) Any person who is involved with working on or breaking into a - the minimum floor area of the room shall be mentioned in the form refrigerant circuit should hold a current valid certificate from an of a table or a single figure without reference to a formula;...
Page 5 37MARAQ: Installation Instructions 6. Detection of Flammable Refrigerants Under no circumstances shall potential sources of ignition be used in For appliances containing flammable refrigerants, refrigerants the searching for or detection of refrigerant leaks. A halide torch (or purging shall be achieved by breaking the vacuum in the system with any other detector using a naked flame) shall not be used.
Page 6 37MARAQ: Installation Instructions 1. Installation (where refrigerant pipes are allowed) The minimum test pressure for the low side of the system shall be the low side design pressure and the minimum test pressure • Any person who is involved with working on or breaking into a for the high side of the system shall be the high side design refrigerant circuit should hold a current valid certificate from an pressure, unless the high side of the system can not be isolated...
Page 7 37MARAQ: Installation Instructions 5. Presence of fire extinguisher 12. Cabling If any hot work is to be conducted on the refrigeration equipment or any Check that cabling will not be subject to wear, corrosion, excessive associated parts, appropriate fire extinguishing equipment shall be pressure, vibration, sharp edges or any other adverse environmental available to hand.
Page 8 37MARAQ: Installation Instructions 15. Charging procedures 17. Labeling In addition to conventional charging procedures, the following Equipment shall be labeled stating that it has been de-commissioned and requirements shall be followed: emptied of refrigerant. The label shall be dated and signed. For appliances containing FLAMMABLE REFRIGERANTS, ensure that there are labels •...
Page 9 37MARAQ: Installation Instructions Table 2 — A (min) HO, RELEASE HEIGHT FT (M) Mc or Mrel (lbs (kg) ≤ 7.2 (2.2) 7.5 (2.3) 7.9 (2.4) 8.5 (2.6) 9.2 (2.8) 9.8 (3.0) ≤ 3.91 (1.776) 12 (1.10) 4.0 (1.8) 60 (5.53) 57 (5.29) 55 (5.07) 50 (4.68)
Page 10 37MARAQ: Installation Instructions ACCESSORIES The system is shipped with the following accessories. Use all of the installation parts and accessories to install the system. Improper installation may result in water leakage, electrical shock and fire, or cause the equipment to fail. Keep the installation manual in a safe place and do not discard any other accessories until the installation work has been completed.
Page 11 37MARAQ: Installation Instructions INSTALLATION • A location which is convenient to installation and not exposed to strong winds. WARNING • A location which can bear the weight of the outdoor unit and where the outdoor unit can be mounted in a level position. Prior to Installation •...
Page 12 37MARAQ: Installation Instructions Fig. 3 — Sizes 09K/12K Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Page 13 37MARAQ: Installation Instructions 4.81 122.053 35.23 894.715 26.1 13.29 337.562 2.82 35.06 890.603 71.521 DETAIL SCALE 2:1 2.89 73.517 Fig. 4 — Size 18K Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Page 14 37MARAQ: Installation Instructions Fig. 5 — Sizes 24K/30K/36K Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Page 15 37MARAQ: Installation Instructions CLEARANCES 20in.(500mm) or more when front and sides of the unit are clear 20in.(500mm) or more when any 2 sides of left, right and rear of the unit are clear Fig. 6 — Clearances Table 6 — Rows of Series Installation ...
Page 16 37MARAQ: Installation Instructions A. INSTALLATION INSTRUCTION Step 1 - Select the Installation Location NOTE: Before installing the outdoor unit, select an appropriate location. The following details are standards designed to help select an appropriate location for the unit. Proper installation locations meet the following standards: 20in.(500mm) or more when front and sides of the unit are clear Noise from the unit...
Page 17 37MARAQ: Installation Instructions INSTALLATION Table 7 — Base Pan Rubber Plugs OUTDOOR UNIT MODEL BASE PAN RUBBER PLUGS QTY. NUMBER PER UNIT RCD PART NUMBER WARNING 37MARAQ12AA1 12600801A00077 37MARAQ09AA3 Prior to Installation 12600801A00077 37MARAQ12AA3 Before installing the indoor unit, ensure the compatibility with the 37MARAQ18AA3 12600801A00077 outdoor unit using the product data as a reference.
Page 18 37MARAQ: Installation Instructions CAUTION DO NOT install the connecting pipe until both the indoor and outdoor units have been installed. Insulate both the gas and liquid piping to prevent condensation. REFRIGERANT PIPING Table 8 — Refrigerant Piping Table OUTDOOR MODEL 37MARAQ12AA1 37MARAQ09AA3 37MARAQ12AA3 37MARAQ18AA3 37MARAQ24AA3 37MARAQ30AA3 37MARAQ36AA3 Power supply V;Ph;Hz...
Page 19 37MARAQ: Installation Instructions Step 2 - Install the Drain Joint NOTE: Before bolting the outdoor unit in place, you must install the drain joint at the bottom of the unit. For units with a base pan built-in (with multiple holes for proper draining during defrost), the drain joint is not needed to be installed. 1.
Page 20 37MARAQ: Installation Instructions Step 3 - Anchor the Outdoor Unit WARNING When drilling into concrete, eye protection is recommended at all times. • The outdoor unit can be anchored to the ground or to a wall-mounted bracket with bolt (M10). Prepare the installation base of the unit according to Figure 10.
Page 21 37MARAQ: Installation Instructions B. REFRIGERANT CONNECTION INSTRUCTIONS 1. Run the interconnecting piping from the outdoor unit to the indoor unit. 5. Flare Pipe Ends Proper flaring is essential to achieving an airtight seal. 2. Connect the refrigerant piping and drain line outside the indoor unit. Complete the pipe insulation at the flare connection then fasten the a.
Page 22 37MARAQ: Installation Instructions 6. Connect the Pipes Connect the copper pipes to the indoor unit first, then connect the CAUTION pipes to the outdoor unit. Connect the low-pressure pipe first, then connect the high pressure pipe. When connecting the flare nuts, apply a thin coat of refrigeration oil to the flared ends of the pipes.
Page 23 37MARAQ: Installation Instructions C. WIRING INSTRUCTION Connection Diagrams Wiring Precautions WARNING - BEFORE PERFORMING ANY ELECTRICAL WORK, READ THESE WARNINGS. All wiring must comply with local and national electrical codes, regulations and must be installed by a licensed electrician. All electrical connections must be made according to the Electrical Connection Diagram located on the panels of the indoor and outdoor units.
Page 24 37MARAQ: Installation Instructions Properly Connect the Wire Lines Screw with special washer Screw with Loop special washer Round terminal Round Terminal plate Wire Round terminal terminal Insulation Wire Solid wire Strand wire Fig. 22 — Properly Connect the Wire Lines 1.
Page 25 37MARAQ: Installation Instructions ELECTRICAL DATA Table 13 — Electrical Data 12K 115V OUTDOOR UNIT (115V) (208/230V) (208/230V) (208/230V) (208/230V) (208/230V) (208/230V) MINIMUM CIRCUIT AMPACITY (MCA) VOLTAGE-PHASE-FREQUENCY 115-1-60 208/230-1-60 MAX – MIN VOLTAGE RANGE* 127-104 253-187 COOLING RUNNING CURRENT 10.3 11.2 POWER CONSUMPTION 1406 1714...
Page 26 37MARAQ: Installation Instructions D. AIR EVACUATION 5000 4500 EVACUATION COIL AND TUBING SYSTEM 4000 LEAK IN SYSTEM 3500 3000 CAUTION 2500 2000 SYSTEM TIGHT 1500 EVACUATE MOISTURE 1000 UNIT DAMAGE HAZARD TIGHT DRY SYSTEM Failure to follow this caution may result in equipment damage or improper operation.
Page 27 37MARAQ: Installation Instructions E. TEST RUN 6. Drainage Test Ensure the drainpipe flows smoothly. New buildings should CAUTION perform this test before finishing the ceiling. Remove the test cover. Add 1/2 gallon of water to the tank through the attached tube. Failure to perform the test run may result in unit damage, property Turn on the main power switch and run the air conditioner in damage, or personal injury.
Page 28 37MARAQ: Installation Instructions TROUBLESHOOTING For ease of service, the systems are equipped with diagnostic code display LEDs on both the indoor and outdoor units. The outdoor diagnostic display has one red LED on the outdoor unit board and is limited to very few errors. The indoor diagnostic display is a combination of flashing LEDs on the display panel or the front of the unit.
Page 29 37MARAQ: Installation Instructions DUCTLESS START-UP CHECKLIST - Single Zone Installation Data Site Address:_______________________________________________________________________________________________________ City:________________________________________________________ State:___________ Zip Code:__________________ Installing Contractor:______________________________________________________ Contractor Contact #: ( ) _____-___________ Job Name:_______________________________________________________________ Start-up Date:_____________________________ Distributor:_______________________________________________________________ System Details UNITS MODEL NO. SERIAL NO. CONTROLLER OUTDOOR UNIT INDOOR UNIT A Are the outdoor unit and indoor unit compatible? YES:______ NO:______...
Page 30 37MARAQ: Installation Instructions Ductless Start-Up Checklist (CONT) Piping Leak Check: System held 500 psig (max. 550psi) for a minimum of 30 minutes using dry nitrogen. YES:______ NO:______ Evacuation Method: • Was the Triple Evacuation Method used as outlined in the installation manual? YES:______ NO:______ •...
Page 31 37MARAQ: Installation Instructions Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Page 32 37MARAQ: Installation Instructions © 2024 Carrier. All rights reserved. Edition Date: 10/24 Catalog No: 37MARA-01SI A Carrier company Replaces: NEW Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

This manual is also suitable for:

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