Carrier 45MHHAC Installation Instructions Manual

Hide thumbs Also See for 45MHHAC:

Owner's manual (20 pages)

Table of Contents

Quick Links

45MHHAC

High Wall Unit Ductless System

Sizes 09K, 12K, 18K, 24K (Cooling Only)

Fig. 1 - Sizes 09K - 24K

NOTE: Read the entire instruction manual before starting the

installation. Images are for illustration purposes only.

Actual models may differ slightly.

Installation Instructions

Specifications subject to change without notice.

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

MODEL NUMBERS AND COMPATIBILITY ..............................5

INSTALLATION .............................................................................6

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

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

ELECTRICAL DATA......................................................................12

WIRING DIAGRAM .......................................................................13

INSTALLATION OVERVIEW.......................................................15

INSTALLATION SUMMARY........................................................16

INSTALLATION .............................................................................18

Step 1 - Select Installation Location.................................................18

Step 2 - Drill Wall Hole For Connecting Piping ..............................19

Step 3 - Install Refrigerant pipe and Drain Hose..............................21

Step 4 - Electrical Work Preparation ................................................23

Step 5 - Wrap Piping and Cables......................................................25

Step 6 - Mount Indoor Unit ..............................................................26

CONNECTION INSTRUCTIONS - REFRIGERANT PIPING......28

Step 1 - Cut Pipes .............................................................................28

Step 2 - Remove Burrs......................................................................29

WIRELESS REMOTE CONTROLLER INSTALLATION............32

OPTIONAL WIRED WALL-MOUNTED REMOTE CONTROL IN-

STALLATION .................................................................................32

TROUBLESHOOTING ...................................................................33

DUCTLESS START-UP CHECKLIST - Single Zone ....................36

PAGE

Chapters

Table of Contents

Need help?

Do you have a question about the 45MHHAC and is the answer not in the manual?

Questions and answers

Summary of Contents for Carrier 45MHHAC

Page 1: Table Of Contents
45MHHAC High Wall Unit Ductless System Sizes 09K, 12K, 18K, 24K (Cooling Only) Installation Instructions TABLE OF CONTENTS PAGE SAFETY CONSIDERATIONS............2 MODEL NUMBERS AND COMPATIBILITY ......5 INSTALLATION ................6 ACCESSORIES................10 DIMENSIONS..................11 ELECTRICAL DATA..............12 WIRING DIAGRAM ...............13 Fig. 1 — Sizes 09K - 24K INSTALLATION OVERVIEW............15...
Page 2: Safety Considerations
45MHHAC: Installation Instructions SAFETY CONSIDERATIONS CAUTION Installing, starting up, and servicing air- conditioning equipment can be hazardous due to system pressures, electrical components, and equipment location (roofs, elevated structures, etc.). EQUIPMENT DAMAGE HAZARD Only trained, qualified installers and service mechanics should install, Failure to follow this caution may result in equipment damage or start- up, and service this equipment.
Page 3: Manual
45MHHAC: Installation Instructions WARNING WARNING Turn off the air conditioner and disconnect the power before PERSONAL INJURY AND PROPERTY DAMAGE HAZARD performing any installation or repairing. Failure to do so can cause electric shock. For continued performance, reliability, and safety, the only approved accessories and replacement parts are those specified by Installation must be performed by an authorized dealer or specialist.
Page 4 45MHHAC: 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)
Page 5: Model Numbers And Compatibility
45MHHAC: Installation Instructions MODEL NUMBERS AND COMPATIBILITY Table 3 — Models SYSTEM TONS BTUH VOLTAGE MODELS 12,000 115-1 45MHHAC12XC1 0.75 9,000 208/230-1 45MHHAC09XC3 12,000 208/230-1 45MHHAC12XC3 18,000 208/230-1 45MHHAC18XC3 24,000 208/230-1 45MHHAC24XC3 Table 4 — Compatibility OUTDOOR UNIT (COOLING ONLY)
Page 6: Installation
45MHHAC: Installation Instructions INSTALLATION 4. Do not use any means to accelerate the defrosting process or to clean, other than those recommended by the manufacturer. WARNING 5. The appliance shall be stored in a room without continuously operating ignition sources (for example: open flames, an operating gas appliance Prior to Installation or an operating electric heater).
Page 7 45MHHAC: Installation Instructions 1. Installation (where refrigerant pipes are allowed) - that steel pipes and components shall be protected against Any person who is involved with working on or breaking into a corrosion with a rustproof coating before applying any insulation;...
Page 8 45MHHAC: Installation Instructions 4. Checking for presence of refrigerant - that there no live electrical components and wiring are exposed while charging, The area shall be checked with an appropriate refrigerant detector - recovering or purging the system; that there is continuity of earth prior to and during work, to ensure the technician is aware of bonding.
Page 9 45MHHAC: Installation Instructions the final oxygen-free nitrogen charge is used, the system shall be 17. Labeling vented down to atmospheric pressure to enable work to take place. Equipment shall be labeled stating that it has been de-commissioned The outlet for the vacuum pump shall not be close to any potential and emptied of refrigerant.
Page 10: Accessories
45MHHAC: 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 has been completed.
Page 11: Dimensions
45MHHAC: Installation Instructions DIMENSIONS Table 7 — Dimensions 12K 115V SYSTEM SIZE (115 V) (208/230 V) (208/230 V) (208/230 V) (208/230 V) inch 11.61 11.5 11.61 12.64 13.27 Height (H) inch 31.57 28.7 31.57 38.23 42.6 Width (W) 1082 inch 7.87...
Page 12: Electrical Data
45MHHAC: Installation Instructions ELECTRICAL DATA Table 8 — Electrical Data 12K 115V OUTDOOR UNIT (115 V) (208/230V) (208/230V) (208/230V) (208/230V) Minimum Circuit Ampacity (MCA) Maximum Overcurrent Protection Ampacity (MOPA) Voltage-Phase-Frequency 115-1-60 208/230-1-60 Max – Min Voltage Range 127-104 253-187 LEGEND...
Page 13: Wiring Diagram
45MHHAC: Installation Instructions WIRING DIAGRAM Fig. 3 — Sizes 09K, 12K, 18K Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Page 14 45MHHAC: Installation Instructions Fig. 4 — Size 24K Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Page 15: Installation Overview
45MHHAC: Installation Instructions INSTALLATION OVERVIEW NOTE: Illustrations in this manual are for explanatory purposes. The actual shape of your indoor unit may be slightly different. The actual shape shall prevail. NOTE ON ILLUSTRATIONS: Illustrations in this manual are for explanatory purposes. The actual shape of your indoor unit may be slightly different.
Page 16: Installation Summary
45MHHAC: Installation Instructions INSTALLATION SUMMARY >5.9in(15cm) >4.72in >4.72in (12cm) (12cm) 70.87in(1.8m) Select Installation Location Attach Mounting Plate Determine Wall Hole Position Drill Wall Hole Prepare Drain Hose Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Page 17 45MHHAC: Installation Instructions Wrap Piping and drain hose Connect Wiring Connect Piping Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Page 18: Installation
45MHHAC: Installation Instructions INSTALLATION Step 1 - Select Installation Location NOTE : PRIOR TO INSTALLATION Before installing the indoor unit, refer to the label on the product box to make sure that the model number of the indoor unit matches the model number of the outdoor unit.
Page 19: Step 2 - Drill Wall Hole For Connecting Piping
45MHHAC: Installation Instructions Step 2 - Drill Wall Hole For Connecting Piping Determine wall hole location 15.9in(403mm) Step 1： Remove the screw that attaches the 5.12in(130mm) 5.24in(133mm) mounting plate to the back of the indoor unit. Φ2.5in(65mm) Indoor unit dimensions(WxH): 31.7in(806mm)x11.65in(296mm)
Page 20 45MHHAC: Installation Instructions NOTE: The size of the wall hole is determined by the connecting pipes. When the pipe size of the gas side is 5/8in ( 16mm) or more, the wall hole should be 3.54in( 90mm). When the pipe size of gas side is less than 5/8in(16mm), the wall hole should be 2.5in (65mm).
Page 21: Step 3 - Install Refrigerant Pipe And Drain Hose
45MHHAC: Installation Instructions Step 3 - Install Refrigerant pipe and Drain Hose NOTE The refrigerant piping is inside an insulating sleeve attached to the back of the unit. You must prepare the piping before passing it through the hole in the wall.
Page 22 45MHHAC: Installation Instructions Connect drain hose For the portion of the drain hose that will ● remain indoors, wrap it with foam pipe insulation to prevent condensation. Drain Remove the air filter and pour a small amount hose ● of water into the drain pan to make sure that water flows from the unit smoothly.
Page 23: Step 4 - Electrical Work Preparation
45MHHAC: Installation Instructions Step 4 - Electrical Work Preparation WARNING BEFORE PERFORMING ANY ELECTRICAL WORK, READ THESE REGULATIONS ● BEFORE PERFORMING ANY ELECTRICAL OR WIRING WORK, TURN OFF ● THE MAIN POWER TO THE SYSTEM. 1. All wiring must comply with local and national...
Page 24 45MHHAC: Installation Instructions 1. Open front panel of the indoor unit. 2. Using a screwdriver, open the wire box cover on the right side of the unit. This will reveal the terminal block. 3. Facing the back of the unit, remove the big plastic knock-out panel to create a slot through which the conduit tube can be installed.
Page 25: Step 5 - Wrap Piping And Cables
45MHHAC: Installation Instructions Step 5 - Wrap Piping and Cables NOTE Before passing the piping, and drain hose through the wall hole, you must bundle them together to save space, protect them, and insulate them. Indoor Unit Step 1： Space behind...
Page 26: Step 6 - Mount Indoor Unit
45MHHAC: Installation Instructions Step 6 - Mount Indoor Unit Hook it Connecting cable Drain hose Put pipes in wall hole Hook it and press down Check that the unit is lightly to secure firmly mounted If you installed new connective piping to the outdoor unit, do the following: If you have already passed the refrigerant piping through the hole in the wall, proceed to Step 4.
Page 27: Mounting Plate
45MHHAC: Installation Instructions If refrigerant piping is already embedded in the wall, do the following: Hook the top of the indoor unit on the upper hook of the ● mounting plate. Use a bracket or wedge to prop up the unit, giving you ●...
Page 28: Connection Instructions - Refrigerant Piping
45MHHAC: Installation Instructions CONNECTION INSTRUCTIONS - REFRIGERANT PIPING Step 1 - Cut Pipes When preparing refrigerant pipes, take extra care to cut and ﬂare them properly. This will 90° ensure efﬁcient operation and minimize the Oblique Rough Warped need for future maintenance.
Page 29: Step 2: Remove Burrs
45MHHAC: Installation Instructions Step 2 - Remove Burrs CAUTION MUST CHECK OVER THE END OF THE PIPE FOR CRACKS AND EVEN FLARING. ENSURE THE PIPE IS SEALED. Remove PVC tape from ends of pipe when Step 2: Remove burrs ●...
Page 30 45MHHAC: Installation Instructions Torque Requirement to Connect Pipes CAUTION WHEN CONNECTING REFRIGERANT PIPES, BE CAREFUL NOT TO USE EXCESSIVE TORQUE OR TO DEFORM THE PIPING IN ANY WAY. YOU SHOULD FIRST CONNECT THE LOW-PRESSURE PIPE, THEN THE HIGH-PRESSURE PIPE. MINIMUM BEND RADIUS ≥4in...
Page 31 45MHHAC: Installation Instructions Connecting Piping to the Outdoor Unit NOTE This section still needs to be operated according to the TORQUE REQUIREMENTS chart on the previous page. Step 1： Unscrew the cover from the packed ● valve on the side of the outdoor unit.
Page 32: Wireless Remote Controller Installation
45MHHAC: Installation Instructions WIRELESS REMOTE CONTROLLER OPTIONAL WIRED WALL-MOUNTED INSTALLATION REMOTE CONTROL INSTALLATION The wired remote controller comes with the following items: • A set of installation instructions and owner's manuals • 3 M4X20 Screws to mount on the wall •...
Page 33: Troubleshooting
45MHHAC: Installation Instructions TROUBLESHOOTING Table 9 — Error Codes Display Malfunction and Protection Indication ODU Fan Speed Out of Control EC07 ODU EEPROM Parameter Error EC51 EC52 ODU Coil Temperature Sensor(T3) error ODU Ambient Temperature Sensor (T4) Error EC53 EC54 COMP.
Page 34: Common Issues
45MHHAC: Installation Instructions COMMON ISSUES Table 10 — Common Issues ISSUE POSSIBLE CAUSE The Unit has a 3-minute protection feature that prevents the unit from overloading. The unit can- Unit does not turn on when pressing ON/OFF. not be restarted within three minutes of being turned off.
Page 35 45MHHAC: Installation Instructions Table 11 — Common Issues PROBLEM POSSIBLE CAUSES SOLUTION Temperature setting may be higher than ambient Lower the temperature setting room temperature The air filter is dirty Remove the filter and clean it according to instructions The air inlet or outlet of either unit is blocked...
Page 36: Ductless Start-Up Checklist - Single Zone
45MHHAC: 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...
Page 37: Performance Check
Wall Controller: 24V Interface: Comments: __________________________________________________________ ________________________________________________________ __________________________________________________________ ________________________________________________________ © 2024 Carrier. All rights reserved. Edition Date: 11/24 Catalog No: 45MHHAC-01SI 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:

45mhhac12xc1 45mhhac09xc3 45mhhac12xc3 45mhhac18xc3 45mhhac24xc3

Carrier 45MHHAC Installation Instructions Manual

Quick Links

TABLE OF CONTENTS

Chapters

Need help?

Questions and answers

Related Manuals for Carrier 45MHHAC

Summary of Contents for Carrier 45MHHAC

This manual is also suitable for:

Table of Contents