Carrier 45VML05A-36A Installation And Operation Manual

Low static ducted indoor unit for variable refrigerant flow

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Low Static Ducted Indoor Unit for Variable Refrigerant Flow (VRF)

Installation and Operations Manual

ABOUT THIS DOCUMENT ..................................................... 1

OPERATIONS MANUAL ....................................................... 12

INSTALLATION MANUAL ................................................... 15

DIMENSIONS .......................................................................... 19

WIRING DIAGRAM................................................................ 45

ERROR CODES ....................................................................... 56

MAINTENANCE AND SERVICE .......................................... 68

SERVICE .................................................................................. 72

Fig. 1 -Low Static Ducted Indoor Unit

NOTE: The figures in this manual are for explanation

purposes only. They may be slightly different

from the unit you purchased (depending on the

model). The actual shape shall prevail.

ABOUT THIS DOCUMENT

NOTE: Make sure that the user has the printed

Target audience

Authorized installers + end users

NOTE: This appliance is intended to be used by expert

Thoroughly read and ensure that you fully understand the

safety precautions (including the signs and symbols) in this

manual, and follow relevant instructions during use to prevent

damage to health or property.

Documentation set

This document is part of a documentation set. The complete set

consists of:

• General safety precautions:

- Safety instructions that you must read before installing

• Indoor unit installation and operation manual:

- Installation and operation instructions

• Repeater installation and operation manual:

- Installation and operation instructions

• Controller installation and operation manual:

- Installation and operation instructions

Refer to the product manual for other accessories.

Technical engineering data

Latest revisions of the supplied documentation may be available

via your dealer.

The original documentation is written in English. All other

languages are translations.

Specifications subject to change without notice.

45VML05A-36A--3

documentation and ask him/her to keep it for

future reference.

or trained users in shops, in light industry, and

on farms, or for commercial and household use

by lay persons.

WARNING

Sizes 07K-24K

Table of Contents

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Summary of Contents for Carrier 45VML05A-36A

Page 1: Table Of Contents
45VML05A-36A--3 Sizes 07K-24K Low Static Ducted Indoor Unit for Variable Refrigerant Flow (VRF) Installation and Operations Manual Table of Contents ABOUT THIS DOCUMENT ABOUT THIS DOCUMENT ............. 1 NOTE: Make sure that the user has the printed OPERATIONS MANUAL ............12 documentation and ask him/her to keep it for future reference.
Page 2 45VML: Installation and Owners Manual If it is necessary to take precautions during installation of the The instructions for FIXED APPLIANCES shall state how the appliance, appropriate details shall be given. appliance is to be fixed to its support. The method of fixing stated is not to depend on the use of adhesives since they are not considered to For appliances marked with different RATED VOLTAGES or different be are liable fixing means.
Page 3 45VML: Installation and Owners Manual Competence of Service Personnel 6. STORAGE OF PACKED (UNSOLD) EQUIPMENT WARNING Storage package protection should be constructed in such a way that mechanical damage to the equipment inside the package will not cause a leak of the REFRIGERANT CHARGE. RISK OF FIRE.
Page 4 45VML: Installation and Owners Manual CAUTION CAUTION Cleaning and user maintenance shall not be made by children without Under no circumstances should the grounding wires of the power supervision. supply system be disconnected. This appliance is intended to be used by expert or trained users in If the supply cord is damaged, it must be replaced by the shops, in light industry and on farms, or for commercial use by lay manufacturer, its service agent or similarly qualified persons in order...
Page 5: Safety Instructions
45VML: Installation and Owners Manual 1. General 2. Unventilated Areas WARNING The appliance contains more than m1 for any refrigerating circuit, an unventilated area where appliance using FLAMMABLE REFRIGERANTS is installed shall be so constructed that should any Pipe-work shall be in compliance with national and local codes refrigerant leak, it will not stagnate so as to create a fire or explosion and standards.
Page 6 45VML: Installation and Owners Manual 8. Ventilated Area Detection of Flammable Refrigerants Ensure that the area is in the open or that it is adequately ventilated Under no circumstances shall potential sources of ignition be used in the before breaking into the system or conducting any hot work. A searching for or detection of refrigerant leaks.
Page 7: Charging Procedures
45VML: Installation and Owners Manual j. When the cylinders have been filled correctly and the process completed, make sure that the cylinders and the equipment are CAUTION removed from site promptly and all isolation valves on the equipment are closed off. k.
Page 8 45VML: Installation and Owners Manual Refrigerant Charge Amount and Room Area 1. It is a permanent opening. Limitations 2. It extends to the floor. 3. It is intended for people to walk through In UL/CSA 60335-2-40, R454B refrigerant is classified as class A2L, which is mildly flammable.
Page 9 45VML: Installation and Owners Manual 3. Room Size Requirement The room into which refrigerant can leak, plus the connected adjacent room(s) shall have a total area not less than A. A is shown in Table 3. Our units meet the requirements for enhanced tightness refrigerating systems using A2L refrigerants. The minimum room area of operating or storage should be as specified in the following table: The allowed maximum refrigerant charge: Determine the maximum refrigerant limit for the system based on the area and height of the room where the indoor unit is installed.
Page 10 45VML: Installation and Owners Manual Table 4 — Allowable Maximum Refrigerant Charge (Cont.) A/TA m² ft² 19.5 11.5 25.4 19.0 15.9 14.0 12.7 11.4 20.4 12.0 26.6 20.0 16.6 14.6 13.3 12.0 21.4 12.6 27.8 20.9 13.9 12.5 17.4 15.3 22.3 13.1 29.1...
Page 11 45VML: Installation and Owners Manual Table 5 — Allowable Maximum Refrigerant Charge (Cont.) A/TA m² ft² 52.0 14.0 30.8 14.0 30.8 14.0 30.8 14.0 30.8 14.0 30.8 13.8 30.5 53.0 14.0 30.8 14.0 30.8 14.0 30.8 14.0 30.8 14.0 30.8 14.0 30.8 a.
Page 12: Operations Manual
45VML: Installation and Owners Manual OPERATIONS MANUAL CAUTION Operation Precautions WARNING Do not dispose of this product as unsorted municipal waste. Collection of such waste separately for special treatment is necessary. If the unit will be not used for a long time, disconnect the main power Do not dispose of electrical appliances as unsorted municipal waste, switch.
Page 13: Optimum Operation
45VML: Installation and Owners Manual 2. OPTIMUM OPERATION 3. SYMPTOMS THAT ARE NOT FAULTS As cold air sinks and hot air rises, adjust the direction of louvers NOTE: During operation, the following phenomena are normal and do not require maintenance. respectively in cooling and heating modes to ensure good cooling and heating effects.
Page 14 45VML: Installation and Owners Manual 4. DISPLAY BOX The following phenomena are normal during operation of the unit. They can be solved according to the instructions below or do not need to be solved. Table 7 — Symptoms that are not System Malfunctions SYMPTOM EXPLANATION When humidity is high during cooling mode, white mist may...
Page 15: Installation Manual
45VML: Installation and Owners Manual INSTALLATION MANUAL INSTALLATION PRECAUTIONS WARNING Make sure to carry out the installation according to local legislation. Ask your local dealer or professionals to install the product. This unit must be installed by qualified persons. Users MAY NOT install the unit themselves; otherwise, faulty operations may cause the risks of fire, electrical shock, injury, or leakage, which could harm you or others or damage the unit.
Page 16 45VML: Installation and Owners Manual CAUTION Keep the indoor unit, outdoor unit, power supply cable, and connecting wires at least 1 m(39-3/8 in) away from the high-power radio equipment, to prevent electromagnetic interference and noise. For some electromagnetic waves, it is not enough to prevent noise even at a distance of more than 1 m(39-3/8 in).
Page 17 45VML: Installation and Owners Manual PRECAUTIONS FOR TRANSPORTING AND Recommended Installation Sites LIFTING THE UNIT It is recommended to install the unit according to the design drawing of the HVAC engineer. The selection principle for the installation site is as 1.
Page 18 45VML: Installation and Owners Manual LAYOUT *Air outlet grille *Air outlet duct *Soft flexible duct Liquid pipe Drain pipes for models Gas pipe without a water pump Drain pipes for models Display box *Connection wires with a water pump Wired controller (optional) Remote controller (optional) Access hole *Power supply cable and earth wires...
Page 19: Dimensions
45VML: Installation and Owners Manual DIMENSIONS Unit: mm(in) External dimension, air outlet size, and size of fresh air outlet: 3/8 (10) 6-7/16 (163) 17-3/4 (450) 1-5/8 (41) 18-1/2 (470) Size of return air inlet (back return air mode): Dimension of pipe and water pipe: I (Liquid side) 5/16 (8) (Inner diameter)
Page 20: Installation Materials
45VML: Installation and Owners Manual 2. INSTALLATION MATERIALS Accessories Table 8 — List of Accessories Flare nut x 2 Cable tie x 4 Installation and operation Thermal insulation pipe x 2 For use in the installation of To tighten the drain hose manual x 1 Used for insulation and Display Box X 1...
Page 21 45VML: Installation and Owners Manual Table 10 — Insulation Material Requirements The insulation work should only be carried out after the successful completion of the air tight test. Use polyethylene foam as insulation material, fire rating class is B1 and heat resistance is over 248°F (120°C).
Page 22: Preparations Before Installation
45VML: Installation and Owners Manual 3. PREPARATIONS BEFORE INSTALLATION Unpacking Check 1. After unpacking, check whether the packing materials are in good condition, whether the accessories that come with the product are complete, whether the unit is intact, whether the surfaces of the heat exchanger and other parts are not worn, and whether there are oil stains on the stop valves of the unit. 2.
Page 23: Electric Control Box
45VML: Installation and Owners Manual Indoor Unit Positioning Determine the positions of the air conditioning unit and suspension bolts. 1. Determine the air outlet/return mode and the suspension position of the indoor unit according to the design drawing. 2. Draw lines to locate the drilling positions of the bolts according to the three-dimensional drawing of the unit. 3.
Page 24 45VML: Installation and Owners Manual Site Adjustment of Air Return There are two air return modes for this series of models. • One is the back air return which is the factory default. • The other is the bottom air return, which can be customized or adjusted on-site. Refer to the following two figures on the adjustment method. 1.
Page 25 45VML: Installation and Owners Manual 4. Install return air flange assembly. Fig. 19 —Install Return Air Flange Assembly 4. INDOOR UNT INSTALLATION WARNING Install the unit in a location with sufficient strength to support the weight of the unit. Take reinforcement measures when necessary. Ensure that appliance is mounted securely.
Page 26: Suspension Bolts
45VML: Installation and Owners Manual With steel frame Sites with concrete slabs Use embedded bolts and anchor bolts Directly set and use an angle iron for support. Suspension bolts Angle iron for support Suspension bolts Fig. 20 —Installation Using Suspension Bolts Indoor Unit Installation ‘...
Page 27 45VML: Installation and Owners Manual 3. Keep the unit level. Use a transparent hose to observe the water level (principle of communicating vessels) and verify the levelness of the unit in the depth direction. Fig. 23 —Keep Unit Level 4. Use a transparent hose to observe water level (principle of communicating vessels) and verify the tilt angle of the unit in the length direction. It shall be installed level or at an angle within 1°...
Page 28 45VML: Installation and Owners Manual WARNING When connecting the fresh air unit, insulate the fresh air pipe with polyethylene foam insulation materials that are at least 3/8 in (10 mm) thick. The temperature difference between the fresh air provided by the fresh air unit to the indoor unit and the indoor temperature shall not exceed 41 ℉...
Page 29 45VML: Installation and Owners Manual AIR INLET GRILLE When designing the air inlet panel of the air return plenum, pay attention to the distance between the vanes of the air inlet grille and try to keep the vanes in parallel with the air inlet direction. Evenly distributed vane Air inlet grille...
Page 30 45VML: Installation and Owners Manual 5. REFRIGERANT CONNECTING PIPING INSTALLATION When connect different series of outdoor units, the length and level differences of piping connections. Refer to the Installation and Operation Manual of the outdoor unit. CAUTION The installation of pipe-work shall be kept to a minimum. During the installation of the connecting pipes, do not allow air, dust, and other debris to penetrate the piping system, and make sure the interior of the pipes is dry.
Page 31: Pressure Reducing Valve
45VML: Installation and Owners Manual Pipe Connection Steps CAUTION Bend and arrange pipes carefully without damaging the pipes and their insulating layers. DO NOT let the interface of the indoor unit bear the weight of the connecting pipe; otherwise, the connecting pipe may be crushed and deformed, which will affect the cooling (heating) effect, or the thermal insulation materials may be compressed, resulting in air leakage and condensation.
Page 32 45VML: Installation and Owners Manual 2. Flaring To cut the piping with a pipe cutter, rotate the pipe cutter repeatedly. 90° Slope Rough Burrs Pipe cutter Outer Fig. 31 —Cut Piping with Pipe Cutter Put the pipe into the connecting nut flaring, and both the gas pipe and liquid pipe of the indoor unit are connected by flaring. Handle 90°...
Page 33 45VML: Installation and Owners Manual 3. Nut fastening a. Connect the indoor unit first, then connect the outdoor unit.Before tightening the flare nut, apply refrigeration oil on the inner and outer surface of the pipe flare (must use refrigeration oil compatible with the refrigerant for this model), and turn it 3 turns or 4 turns by hand to tighten it.When connecting or removing a pipe, use two wrenches at the same time.
Page 34 45VML: Installation and Owners Manual CAUTION When flared joints are reused indoors, the flare part should be re- fabricated. Mechanical connectors used indoors shall comply with ISO 14903. Table 11 — Torque Values Pipe size [in (mm)] Tightening torque [ft-lbs (N.m)] Φ...
Page 35 45VML: Installation and Owners Manual Leak Detection The leak test shall comply with ANSI/ASHRAE Standard 15. 1. To check for leaks: Vacuum leak test a. Evacuate the system from the liquid and gas piping to –100.7 kPa (–1.007 bar)(5 Torr absolute) for more than 2 hours. b.
Page 36 45VML: Installation and Owners Manual Insulation Treatment Pipes on the liquid and air sides have a low temperature during cooling. Take sufficient insulation measures to prevent condensation. • Be sure to use a thermal insulation material with a heat resistance of 120 °C(248 ℉) or higher for the gas pipe. •...
Page 37 45VML: Installation and Owners Manual Installation of Water Drain Pipe for the Indoor Unit 1. Units without pumps: Use the attached drain hose to connect to the drain pan outlet and PVC pipe, and fasten the two ends of the drain hose with a cable tie.
Page 38 45VML: Installation and Owners Manual 2. The water pump connecting pipe and drain pipe (in the indoor part) must be wrapped with heat insulation pipe evenly and bound with cable ties to prevent air from entering and producing condensate. Cable tie Drain pipe Thermal insulation pipe Fig.
Page 39 45VML: Installation and Owners Manual Connection Method to Drain Water with the Drain Pump Air outlet (Unit: mm(in)) ＜ 7-7/8 (200) Slope > 1/100 The net height of the drain pipe (31-1/2 to 39-3/8) 800 to1 000 47-1/4 (1200) Fig. 45 —Method to Connect Drain Pipe for Single Unit ＜...
Page 40 45VML: Installation and Owners Manual Drain pipes from multiple units are connected to the main drain pipe to be drained through the sewage pipe. Units: in (mm) Air outlet Height difference as large as possible Slope > 1/100 The drain pipe should have [about 3-15/16 (100)] a slope of 1/100 or more.
Page 41: Air Duct Installation
45VML: Installation and Owners Manual 7. AIR DUCT INSTALLATION • Use locally purchased air ducts and soft air ducts (Use environmentally friendly, odorless materials, otherwise the air conditioner may generate odor when it runs). • Install the flange at the air return side, and use aluminum foil tape to seal the connection part between the flange and the air duct to avoid air leakage. •...
Page 42 45VML: Installation and Owners Manual Connection between air vent and air duct wrong Air vent size and position wrong Connection between air Air vent vent and air size wrong duct wrong Air outlet Air outlet Return air inlet not opened Return air inlet Air vent position wrong Air vent size and position correct...
Page 43: Electrical Connection
45VML: Installation and Owners Manual ELECTRICAL CONNECTION DANGER The power supply must be cut off before any electrical work is carried out. Do not conduct electrical work when the power is on; otherwise, it may cause serious personal injury. The air conditioning unit must be grounded reliably and must meet the requirements of the local country/region.
Page 44 45VML: Installation and Owners Manual CAUTION Avoid bonding and connecting the communication wiring. If doing so is unavoidable, at the very least, ensure a reliable connection by crimping or soldering and make sure the copper wire at the connection is not exposed; otherwise, communication failure may occur.
Page 45: Wiring Diagram
45VML: Installation and Owners Manual WIRING DIAGRAM Fig. 54 —Wiring Diagram Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
Page 46: Power Input
45VML: Installation and Owners Manual Wiring 1. Open the indoor unit's electric control box cover. a. Remove the two screws at the positions shown in Fig. 55; b. Pull the bottom end of the electric control box cover horizontally outward; c.
Page 47 45VML: Installation and Owners Manual CAUTION Do not bond and connect the power supply cable. Bonding and connecting the power supply cable may cause it to heat up, resulting in a fire. The power supply cable must be crimped If it fails to crimp the insulated circular terminal reliably using an insulated circular terminal block due to on-site limitations, connect the block, and then connected to the power supply...
Page 48 45VML: Installation and Owners Manual b. Power supply cable system connection Use a dedicated power supply for the indoor unit that is different from the power supply for the outdoor unit. Use the same power supply, circuit breaker and leakage protective device for the indoor units connected to the same outdoor unit. Power supply for indoor unit Wire diameter:...
Page 49 45VML: Installation and Owners Manual CAUTION Select the communication wiring according to the requirements in Table 15. Use shielded cables for communication when strong magnetism or interference is present. On-site wiring must comply with the relevant regulations of the local country/region and must be completed by professionals.
Page 50 45VML: Installation and Owners Manual System: The HyperLink (M1M2) communication wiring between indoor unit and outdoor unit can reach a length of up to 6561.68 ft (2000 m), supporting any topology connection. Fig. 60 shows a serial connection: Power supply for indoor unit Communication wires ××...
Page 51 45VML: Installation and Owners Manual d. D1D2 communication wiring connection (limited to outdoor unit and system configuration) Achieving one-to-multiple and two-to-multiple functions of indoor unit wired controller through D1D2 communication (maximum of 16 sets). D1D2 communication is 485 communication. The one-to-more and two-to-more functions of the indoor unit wired controller can be achieved through D1D2 communication, as shown in Fig 62: Indoor unit 2 # Indoor unit 16 #...
Page 52: Switch Module
45VML: Installation and Owners Manual 5. Switch module setting DRY2 DRY1 CO M Switch module ENC1 ENC2 ENC3 1 2 3 4 Fig. 63 —Layout of Switch Module Table 16 — Port Definition and Function Description Port Attribute Function Input Connect the A2L refrigerant leakage Input Short circuit, No function definition...
Page 53: Indoor Unit
45VML: Installation and Owners Manual ENC1/ENC2/ENC3, DRY1, DRY2 Functions There are three switches on the switch module: ENC1, ENC2 and ENC3. The CN3 port of the communication switching board has two output dry contacts: dry contact 1 (DRY1), dry contact 2 (DRY2). DRY 1: Fan Output dry contact, which can be connected to devices such as air valves, new fans, and exhaust fans.
Page 54 45VML: Installation and Owners Manual 6. External board connection (limited to outdoor unit and system configuration) The external boards are connection module outside the main control board, including a display box, 1 # Expansion board and 2 # Expansion board. a.
Page 55 45VML: Installation and Owners Manual 7. Alarm Signal Module Refer to Fig. 67 for the wiring of alarm signal module. CN22 Main 3 2 1 control Output voltage: 208/230 VAC; board Maximum current :1 A Alarm signal output Fig. 67 —Alarm Signal Wiring Module CAUTION The output voltage is 208/230 V~.
Page 56: Error Codes
45VML: Installation and Owners Manual ERROR CODES The error code is displayed on the display box and the wired controller display. Table 20 — Error Codes and Definitions Definition Error code Digital display Emergency stop DANGER R454B refrigerant leaks, requiring shutdown immediately Outdoor unit fault Interlocking control Heat Recovery Ventilation Unit fault( in-series application) The Humidity Unit fault...
Page 57 45VML: Installation and Owners Manual Definition Error code Digital display Abnormal communication between the indoor unit main control board and fan drive board Abnormal communication between the indoor unit and wired controller Abnormal communication between the indoor unit and Wi-Fi Kit Abnormal communication between the indoor unit main control board and display board Abnormal communication between the AHU Kit slave unit and master unit Number of AHU Kits is not the same as the set number...
Page 58 45VML: Installation and Owners Manual Definition Error code Digital display T1 (Indoor unit return air temperature sensor) short-circuits or cuts off The built-in room temperature sensor of the wired controller short-circuits or cuts off The wireless temperature sensor short-circuits or cuts off The external room temperature sensor short-circuits or cuts off Tcp (pre-cooled fresh air temperature sensor) short-circuits or cuts off Tph (pre-heated fresh air temperature sensor) short-circuits or cuts off...
Page 59 45VML: Installation and Owners Manual Definition Error code Digital display Address code not detected Motor failed more than once IPM (fan module) overcurrent protection Instantaneous overcurrent protection for phase current Low bus voltage fault High bus voltage fault Phase current sample bias error Motor and indoor unit are unmatched IPM and indoor unit are unmatched Motor startup failure...
Page 60 45VML: Installation and Owners Manual Table 21 — Operating Status Codes and Definitions (Non-Error) Definition Code Digital display Oil return or preheating operation Self-cleaning Mode conflict Defrosting Outdoor unit running in heating mode Static pressure detection Remote shutdown Indoor unit backup operation outdoor unit backup operation Main control program upgrading CAUTION...
Page 61 45VML: Installation and Owners Manual SETTINGS Use the wired controller (for example, WDC3-120T2) to enter engineering settings: • Parameters can be set in the power-on or power-off state. > • Hold " " and " " for 3 seconds to enter the parameter setting interface. ˅...
Page 62 45VML: Installation and Owners Manual ESP SETTING Use the wired controller (for example, WDC3-120T2) to set the unit external static pressure, which can be divided into the following two situations: Constant Speed Mode Indoor units that are equipped with a constant air flow function are set to the constant air flow mode when they leave the factory. After the units are installed, they should undergo initial static pressure test before use.
Page 63 45VML: Installation and Owners Manual Fig. 76 —24 kBtu/h 15 kBtu/h 30 kBtu/h 0.28 0.28 0.24 0.24 0.20 0.20 0.16 0.16 0.12 0.12 0.08 0.08 0.04 0.04 0.00 0.00 200 220 240 260 280 300 320 340 360 380 400 420 440 460 480 500 540 Air flow rate [CFM] Air flow rate [CFM]...
Page 64 45VML: Installation and Owners Manual CONSTANT SPEED MODE In this mode, the unit must be set to constant speed mode in “Set fan speed” item. Table 24 — Constant Speed Mode INDOOR UNIT SET ITEM PARAMETER NAME PARAMETER RANGE DEFAULT VALUE REMARKS Indoor unit static pressure is set based On-site settings...
Page 65: Constant Speed
45VML: Installation and Owners Manual AIR PRESSURE CURVES Constant Speed 12 kBtu/h 5 kBtu/h 0.28 0.28 ESP*1：0.20 in.wg MAX ESP*1：0.20 in.wg MAX ESP*2：0.12 in.wg ESP*2：0.12 in.wg ESP*3：0.04 in.wg STD & MIN 0.24 ESP*3：0.04 in.wg STD & MIN 0.24 0.20 0.20 0.16 0.16 0.12...
Page 66 45VML: Installation and Owners Manual Fig. 86 —30K 24 kBtu/h 0.28 ESP*1：0.20 in.wg MAX 36 kBtu/h ESP*2：0.08 in.wg STD ESP*3：0.04 in.wg MIN 0.28 0.24 ESP*1：0.20 in.wg MAX ESP*2：0.08 in.wg STD 0.24 ESP*3：0.04 in.wg MIN 0.20 0.20 0.16 0.16 0.12 0.12 0.08 0.08 0.04...
Page 67: Checklist Before Test Run
45VML: Installation and Owners Manual TEST RUN Checklist Before Test Run After the installation of the unit, check the items listed below first. CAUTION Do not power on the system. Table 27 — Checklist Before Test Run Pass/Fail Checklist Read the complete installation and operation manual. Installation Check that the units are properly installed, to avoid abnormal noises and vibrations when starting up the units.
Page 68: Maintenance And Service
45VML: Installation and Owners Manual MAINTENANCE AND SERVICE WARNING SAFETY WARNING • For safety reasons, always turn off the unit and turn off the power before cleaning the unit. • Do not disassemble or repair the unit by yourself; otherwise, it may cause fire or other hazards.
Page 69 45VML: Installation and Owners Manual Procedure 1. Remove the air inlet grille. For duct type air conditioners, open the air inlet grille as shown in Fig 88. Fig. 88 —Remove Air Inlet Grille 2. Remove the filter. NOTE: Only authorized installer or service agent can change and disassemble the filter. Any improper operations may cause electric shock or injuries due to touching rotating parts.
Page 70: Maintenance
45VML: Installation and Owners Manual Cleaning Air Outlets and Exterior Panels 1. Wipe the air outlet and panel with a dry cloth. 2. If a stain is hard to remove, clean it with clean water or neutral detergent. CAUTION Do not use gasoline, benzene, volatile agents, decontamination powder or liquid insecticides.
Page 71 45VML: Installation and Owners Manual ABOUT R454B REFRIGERANT SENSOR R454B refrigerant sensor is configured for the indoor unit. NOTE: Lifetime of the sensor is 15 years. The user interface displays error "d43" 3 months before the end of the sensor lifetime and error "EC1"...
Page 72: Service
45VML: Installation and Owners Manual SERVICE WARNING Risk of electric shock. Can cause injury or death. Disconnect all remote electric power supplies before servicing hazardous voltage. Disconnect all electric power including remote disconnects before servicing. Insure that all capacitors have discharged stored voltage. Failure to do the above could result in death or serious injury.
Page 73 45VML: Installation and Owners Manual 3. Shift the drain pan assembly to the left by more than 1-1/8 in (30 mm). Drain pan assembly Fig. 92 —Shift Drain Pan to Left 4. Shift the drain pan downwards until the drain pan is removed from the unit body. Drain pan assembly Fig.
Page 74 45VML: Installation and Owners Manual Dismantle Wind Turbine, Gearbox, Coupling Shaft, Coupling, Bearing Housing, and Motor Disassembly 1. Remove the return air flange assembly. Return air flange assembly Fig. 94 —Remove Air Flange Assembly 2. Remove the return air cover plate, tear open the sealing sponge of the volute casing, and expose the maintenance hole in the middle of the volute casing.
Page 75 45VML: Installation and Owners Manual 5. Loosen the screws on the upper propeller casing. Fig. 98 —Loosen Screws on Upper Propeller Casing 6. Move the upper propeller casing 2 in (50 mm). Fig. 99 —Move Upper Propeller Casing 7. Make the propeller casing rotate more than 90° downward along the wind wheel. Fig.
Page 76 45VML: Installation and Owners Manual 9. Loosen the fastening screws for the motor sealing plate. Fig. 102 —Loosen Fastening Screws for Motor Sealing Plate 10. Remove the motor and wind wheel together; unscrew the screws securing the wind wheel in place and remove the wind wheel and motor. Fig.
Page 77 45VML: Installation and Owners Manual Dismantle the Drain Pump (with Water Pump), Temperature Sensor and Electronic Expansion Valve 1. Remove the screws on the water pump cover and pipe clamp board, and then remove the pipe clamp board, as shown in Fig. 104. 2.
Page 78: Air Filter
2. Pull out the air filter from the side. Air filter Fixing plate Fig. 107 —Pull Out Air Filter from Side © 2025 Carrier. All rights reserved. Edition Date: 01/25 Catalog No: 45VML05A-36A---3-01SI Replaces: NEW Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

Carrier 45VML05A-36A Installation And Operation Manual

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