Cooper & Hunter CH-RS18MAHU Installation Manual

Air conditioner r454b

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AIR-HANDLER

Installation Manual

IMPORTANT NOTE:

Read this manual carefully before installing

or operating your new air conditioning unit.

Make sure to save this manual for future

reference.

AIR CONDITIONER

Models:

CH-RS18MAHU

CH-RS24MAHU

CH-RS30MAHU

CH-RS36LCAHU

CH-RS48LCAHU

CH-RS60LCAHU

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Summary of Contents for Cooper & Hunter CH-RS18MAHU

Page 1 AIR-HANDLER AIR CONDITIONER Installation Manual Models: CH-RS18MAHU CH-RS24MAHU CH-RS30MAHU CH-RS36LCAHU CH-RS48LCAHU CH-RS60LCAHU IMPORTANT NOTE: Read this manual carefully before installing or operating your new air conditioning unit. Make sure to save this manual for future reference.
Page 3 About the Company With more than 25 years of experience in air conditioning and ventilation, Cooper&Hunter is considered one of the HVAC leaders in the US market. Distributed in more than 55 countries worldwide, brand dedicated technological innovation consumer-driven product development, while generating HVAC equipment that adheres to the highest quality standards in the US.
Page 4: Warranty Registration
Learn more about your unit Learn more technical information about your unit at www.cooperandhunter.us, where you can ﬁnd submittals, leaﬂets, videos and all technical speciﬁcations of your unit. Step 1 On the website cooperandhunter.us, type in your unit model number into the search ﬁeld and click enter.
Page 5 How to apply for the rebate program Almost all Cooper&Hunter equipment is eligible for the rebate program.Visit our website to see if the rebates apply to your location. Step 1 Go to cooperandhunter.us/rebates to add your zip code and select your outdoor unit to see if your unit qualiﬁes for the rebate.
Page 6: Table Of Contents
CONTENTS SAFETY PRECAUTIONS ACCESSORIES INDOOR UNIT INSTALLATION REFRIGERANT PIPING CONNECTION INSTALLATION OF ELECTRIC AUXILIARY HEAT MODULE CONFIRMATION OF INDOOR UNIT OUTDOOR UNIT INSTALLATION WIRING PRECAUTIONS SPECIFICATIONS AIR EVACUATION NOTE ON ADDING REFRIGERANT TEST RUN Read this manual Inside you’ll ﬁnd many helpful hints on how to use and maintain your air conditioner properly. Just a little preventive care on your part can save you a great deal of time and money over the life of your air conditioner.
Page 7: Safety Precautions
SAFETY PRECAUTIONS It is really important you 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. Explanation of Symbols WARNING This symbol indicates the possibility of personal injury or loss of...
Page 8 WARNINGS FOR PRODUCT INSTALLATION Turn o the air conditioner and disconnect the power before performing any ● installation or repairs. Failure to do so can cause electric shock. Installation must be performed by an authorized dealer or specialist according to ●...
Page 9 WARNING FOR USING FLAMMABLE REFRIGERANT 1. Installation (Space) - That the installation of pipe-work shall be kept to a minimum. - That pipe-work shall be protected from physical damage. - Where refrigerant pipes shall be compliance with national gas regulations. - That mechanical connections shall be accessible for maintenance purposes.
Page 10 NOTE ABOUT FUSE SPECIFICATIONS • The air conditioner’s circuit board (PCB) may be designed with a fuse to provide overcurrent protection. This fuse must be replaces with identical component. • The speciﬁcations of the fuse, if equipped, are printed on the circuit board, examples of such are T5A/250VAC and T10A/250VAC.
Page 11: Indoor Unit
Please check the machine you purchased.The minimum room area of operating or storage should be as speciﬁed in the following table: Products Model Indoor unit Outdoor unit series CH-RES18-230VO 18K(208/230V) CH-RS18MAHU CH-RHP18-230VO CH-RES24-230VO 24K(208/230V) CH-RS24MAHU R454B CH-RHP24-230VO 30K(208/230V) CH-RS30MAHU CH-REL30-230VO...
Page 12 1. Installation(where refrigerant pipes are allowed) - Any person who is involved with working on or breaking into a refrigerant circuit should hold a current valid certiﬁcate from an industry-accredited assessment authority, which authorizes their competence to handle refrigerants safely in accordance with an industry recognized assessment speciﬁcation. - Maintenance and repair requiring the assistance of other skilled personnel shall be carried out under the supervision of the person competent in the use of ﬂammable refrigerants.
Page 13 a. The minimum test pressure for the low side of the system shall be the low side design pressure and the minimum test pressure for the high side of the system shall be the high side design pressure, unless the high side of the system can not be isolated from the low side of the system in which case the entire system shall be pressure tested to the low side design pressure.
Page 14 9. No ignition sources No person carrying out work in relation to a REFRIGERATING SYSTEM which involves exposing any pipe work shall use any sources of ignition in such a manner that it may lead to the risk of ﬁre or explosion. All possible ignition sources, including cigarette smoking, should be kept su ciently far away from the site of installation, repairing, removing and disposal, during which refrigerant can possibly be released to the surrounding space.
Page 15 14. Detection of ﬂammable refrigerants Under no circumstances shall potential sources of ignition be used in the searching for or detection of refrigerant leaks. A halide torch(or any other detector using a naked ﬂame) shall not be used. The following leak detection methods are deemed acceptable for refrigerant systems.
Page 16 17. Charging procedures In addition to conventional charging procedures, the following requirements shall be followed: Works shall be undertaken with appropriate tools only (In case of uncertainty, please consult the manufacturer of the tools for use with ﬂammable refrigerants) Ensure that contamination of di erent refrigerants does not occur when using charging equipment.
Page 17 20. Recovery When removing refrigerant from a system, either for servicing or decommissioning, it is recommended good practice that all refrigerants are removed safely. When transferring refrigerant into cylinders, ensure that only appropriate refrigerant recovery cylinders are employed. Ensure that the correct number of cylinders for holding the total system charge is available.
Page 18 22. Transportation, marking and storage for units that employ ﬂammable refrigerants a. General The following information is provided for units that employ FLAMMABLE REFRIGERANTS. b. Transport of equipment containing ﬂammable refrigerants Attention is drawn to the fact that additional transportation regulations may exist with respect to equipment containing ﬂammable gas.
Page 19: Accessories 1
ACCESSORIES The air conditioning system comes with the following accessories. Use all of the installation parts and accessories to install the air conditioner. Improper installation may result in water leakage, electrical shock and ﬁre, or equipment failure. Accessories (Packed with the indoor unit) Manual Cable ties Insulation sleeve...
Page 20: Indoor Unit Installation 1
INDOOR UNIT INSTALLATION CAUTION Install the indoor and outdoor units, cables and wires at least 3-1/5ft (1m) from televisions or radios to prevent static or image distortion. Depending on the appliances, a 3-1/5ft (1m) distance may not be su cient. The Indoor unit must be electrically grounded per national and local electrical code.
Page 21 WARNING There must be an airtight seal between the bottom of the air handler and the return air plenum. Use ﬁberglass sealing strips, foil duct tape, caulking, or equivalent sealing method between the plenum and the air handler cabinet to ensure a tight seal. Return air must not be drawn from a room where this air handler or any gas-fueled appliance (i.e., water heater), or carbon monoxide-producing device (i.e., wood ﬁreplace) is installed.
Page 22 Indoor unit parts installation size (unit: inch/mm) Model(Btu/h) 12K~24K 30K~36K 48K-60K Dimensions inch Length of A 1143 1245 1346 inch Length of B inch 17-1/2 21-1/50 24-1/2 Length of C inch 15-3/4 19-5/16 22-27/32 Length of D inch 10-1/4 10-1/4 10-1/4 Length of E Recommended size of ﬁlter...
Page 23: Installation Position Requirements
Installation Position Requirements Vertical installations Horizontal installations NOTICE FOR DUCT CONNECTIONS： It should be assembled It should be insulated It should be Flexible It should be fabricated accordance to the and use a Vapor Barrier. suspension mounted and installed in and not fastened instructions.
Page 24 CAUTION A ﬁeld-fabricated secondary drain pan, with a drain pipe to the outside of the building, is required in all installations over a ﬁnished living space or in any area that may be damaged by overﬂow from the main drain pan. In some localities, local codes may require a secondary drain pan for any horizontal installation.
Page 25 Connecting the wire and pipes(pipes and drainage pipes) Vertical down Horizontal right Please follow these steps to perform installation and installation: Step 1 Open the upper cover. Step 2 Open the cover of the electronic control box. Step 3 Connect the wire according to the wiring diagram. Step 4 Connect the pipes and install the drainage pipes.
Page 26 Step 4 Step 5 Indication of the position of each Unplug temperature sensors T1,T2,refrigerant temperature temperature sensor detection sensor from the control board. of the evaporator, conﬁrm your T1: IDU room temp. sensor(T1) model. T2: IDU coil temp. sensor(T2) 18-24K model refrigerant detection sensor...
Page 27 Step 6 Step 9 Take out the evaporator and drain pan and rotate 180° Reinstall T1, T2 sensor plug and tie up the sensor wires. (when your equipment need to be vertical downed conﬁguration). Cut the foam gasket. Step 7 Adjust the mounting parts position according to the direction of equipment.
Page 28 Step 10 The evaporator is assembled in place. Step 11 Step 13 Use cable ties to ﬁx the room temperature sensor as shown in the ﬁgure. Connect the wire according to the wiring diagram. Step 14 cable ties Reassenble the upper cover and Reinstall the ﬁlter, ﬁlter cover plate.
Page 29: Vertical Discharge
NOTICE ON PURCHASING PIPES Installation requires pvc pipe or other suitable material per local and national codes, which can be obtained at your local hardware store or dealer. WARNING • After removal of drain pan plug(s), check drain hole(s) to verify that drain opening is fully open and free of any debris.
Page 30: Refrigerant Piping Connection
REFRIGERANT PIPING CONNECTION WARNING All ﬁeld piping must be completed by a licensed technician and must comply with the local and national regulations. • When the air conditioner is installed in a small room, measures must be taken to prevent the refrigerant concentration in the room from exceeding the safety limit.
Page 31: Connection Instructions-Refrigerant Piping
Connection Instructions—Refrigerant Piping Step 1: Cut pipes Step 2: Remove burrs When preparing refrigerant pipes, take Burrs can a ect the air-tight seal of refrigerant piping extra care to cut and ﬂare them properly. connection. They must be completely removed. This will ensure e cient operation and minimize the need for future maintenance.
Page 32: Step 4: Connect Pipes
• Clamp ﬂare from on the end of the pipe. The end of the pipe must extend beyond the ﬂare form. Flare form Pipe • Place ﬂaring tool onto the form. Torque wrench • Turn the handle of the ﬂaring tool clockwise until the pipe is fully ﬂared.
Page 33 CAUTION • Thread this pipeline through the wall and connect it to the outdoor unit. Check to make sure there is no refrigerant • Insulate all the piping, including the valves of leak after completing the installation work. the outdoor unit. If there is a refrigerant leak, ventilate the area Open the stop valves of the outdoor unit to •...
Page 34: Installation Of Electric Auxiliary Heat Module
INSTALLATION OF ELECTRIC AUXILIARY HEAT MODULE NOTICE Installation must be performed by an licensed contractor. Please make necessary precaution when performing the installation operation. Accessories Preparations for Installation Before installation, please conﬁrm the electric Name Quantity Name Quantity auxiliary heat module and supplied accessories are complete and free of any damage.
Page 35 Step 3 Step 5 Remove the terminal block and power wires, Tighten the mounting screws. loosen the screws, and remove the electric auxiliary heating cover. screws. Step 6 Wire according to the wiring nameplate. Step 4 Apply the wiring diagram to the inside cover wiring is completed for future reference and Install the electric auxiliary heating assembly maintenance.Plug the electric heating plugs...
Page 36: Confirmation Of Indoor Unit
CONFIRMATION OF INDOOR UNIT NOTICE Electric auxiliary heating wiring diagram packed with the accessories. If branch circuit wire lenght exceeds 100 ft, consult NEC 210-19a to determine maximum wire length. Use 2% voltage drop. After the electric heating wiring is connected, please conﬁrm before power on: •...
Page 38: Outdoor Unit Installation
OUTDOOR UNIT INSTALLATION NOTICE Install the unit by following local switchs and regulations , there may be di er slightly between di erent regions. Select the installation location of outdoor units Before installing the outdoor unit, you must choose an appropriate location. The following are standards that will help you choose an appropriate location for the unit.
Page 39 DO NOT install unit in the following locations: Near an obstacle that will Near animals or plants that will Near a public street, block air inlets and outlets. be harmed by hot air discharge. crowded areas, or where noise from the In a location that is exposed Near any source of unit will disturb others.
Page 40: Anchor Outdoor Unit
IN COLD CLIMATES In cold climates, make sure that the drain hose is as vertical as possible to ensure swift water drainage.If water drains too slowly, it can freeze in the hose and ﬂood the unit. Anchor outdoor unit 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 the dimensions below.
Page 41 Outdoor Unit Dimensions Mounting Dimensions inch inch inch inch inch 31-11/16 21-13/16 20-1/8 12-1/2 26-1/2 13-15/32 26-1/8 13-15/16 37-1/4 31-29/32 16-5/32 26-1/2 15-7/8 38-19/32 38-3/8 16-11/32 24-1/4 15-5/8 37-1/2 52-1/2 1333 16-11/32 24-35/36 15-29/32 (unit: inch/mm) Rows of series installation The relations between H, A and L are as follows.
Page 42: Wiring Precautions
WIRING PRECAUTIONS WARNING BEFORE PERFORMING ANY ELECTRICAL WORK, READ THESE WARNINGS. All wiring must comply with local and national Do not let wires touch or rest against ● ● electrical codes, regulations and must be installed refrigerant tubing, the compressor, or any by a licensed electrician.
Page 43: Outdoor Unit Wiring
OUTDOOR UNIT WIRING WARNING Before performing any electrical or wiring work, turn o the main power to the system. Step 1: Prepare the cable for connection. 208/230V~60Hz Power Supply 1. You must ﬁrst choose the right cable size. 2. Using wire strippers, strip the rubber jacketfrom both ends of the signal cable to L1 L2 reveal approximately 5.9in(150mm) of wire.
Page 44: Indoor Unit Wiring
INDOOR UNIT WIRING CAUTION • While connecting the wires, please strictly follow the wiring diagram. • The refrigerant circuit can become very hot. Keep the interconnection cable away from the copper tube. Step 1: Prepare the cable for connection. Type B Using wire strippers, strip the insulating jacket from both ends of the signal cable to reveal Class2 wire...
Page 45 SPECIFIC WIRING METHODS WARNING Please refer to the wiring nameplate for the wiring method. Do not connect the power cord to the communication line, as this may damage the system. Connection method A(recommend): Connection method B: Refer to the wiring method of internal and To use a 24V thermostat, you need to refer to the external machine communication and wired following wiring:...
Page 46: Humidifier Control
Connection method C: Condensate overﬂow switch: Cooling and Fixed-speed Type Only System The unit will accommodate a remote condensate Wiring Diagram: overﬂow switch. To enable, remove jumper J7, and connect the installer provided condensate overﬂow device to CN23 per below. When an overﬂow condition is present, the device should open connection signaling the unit to turn o the system.
Page 47: Led Display
UV,fresh air or ion generator wiring LED display The control displays unit status as well as any active fault codes on the LED display. If the unit is functioning normally, the LED will display current temperature setpoint. When a fault code is active, the display will ﬂash quickly the active fault code.
Page 48 Air volume table 24V thermostat Wired controller Airﬂow External Static Electric auxiliary volume Fan speed Capacity Pressure Range heat module 24V terminal engaged Mode (CFM) Cooling Turbo — Y2/Y Cool Cooling High — Y2/Y Cool Cooling Medium — Cool Cooling Low —...
Page 49 Air volume table 24V thermostat Wired controller Airﬂow External Static Electric auxiliary volume Capacity Fan Speed Pressure Range heat module 24V terminal engaged Mode (CFM) — Y2/Y Cool Cooling Turbo 1188 — Y2/Y Cool 1082 Cooling High — Cool Cooling Medium —...
Page 50: Specifications 4
SPECIFICATIONS Cooling and Heating power speciﬁcations (Regular Heat Series) PHASE POWER (outdoor) FREQUENCY AND VOLT OUTDOOR UNIT 2+Ground LINE QUANTITY OUTDOOR UNIT POWER LINE LINE DIAMETER(AWG) LINE QUANTITY OUTDOOR-INDOOR SIGNAL LINE LINE DIAMETER(AWG) LINE QUANTITY THERMOSTAT SIGNAL LINE LINE DIAMETER(AWG) LINE QUANTITY INDOOR-OUTDOOR CONNECTION LINE...
Page 51 SPECIFICATIONS Cooling and Heating power speciﬁcations (Regular Heat Series) PHASE POWER (outdoor) FREQUENCY AND VOLT OUTDOOR UNIT 2+Ground LINE QUANTITY OUTDOOR UNIT POWER LINE LINE DIAMETER(AWG) LINE QUANTITY OUTDOOR-INDOOR SIGNAL LINE LINE DIAMETER(AWG) LINE QUANTITY THERMOSTAT SIGNAL LINE LINE DIAMETER(AWG) LINE QUANTITY INDOOR-OUTDOOR CONNECTION LINE...
Page 52: Air Evacuation
AIR EVACUATION NOTICE When opening valve stems, turn the hexagonal wrench until it hits against the stopper. Do not try to force the valve to open further. Close the Low Pressure side of the manifold Preparations and precautions gauge, and turn o the vacuum pump. Wait for 5 minutes, then check that there Air and foreign matter in the refrigerant circuit has been no change in system pressure.
Page 53: Note On Adding Refrigerant
NOTE ON ADDING REFRIGERANT CAUTION DO NOT mix refrigerant types. Some systems require additional charging depending on pipe lengths. In North America, the standard pipe length is 25ft (7.5m). The refrigerant should be charged from the service port on the outdoor unit’s low pressure valve.
Page 54: Test Run 4
TEST RUN CAUTION Failure to perform the test run may result in unit damage, property damage, or personal injury. 5. For the Outdoor Unit Before test run a. Check to see if the refrigeration system is leaking. A test run must be performed after the entire b.
Page 55 24V SIGNAL CHART 24V input terminal Mode Priority Y/Y2 E/AUX Fan speed Display Cooling stage 1 Cooling stage 2 High Dehumidification 1 Dehumidification 2 Heat pump stage 1 Heat pump stage 2 High Heat pump stage 2 High Electric auxiliary Turbo heat module Electric auxiliary...
Page 56: Technical Support
Technical Support Single & Multi-Zone Mini Splits • PTACs • Portables • TTWs • Light Commercial A/C Systems Limited Warranty provided by Cooper&Hunter (hereby referred to as C&H) covers speciﬁed products and parts, subject to the following details: Our warranty: C&H Limited Warranty applies only to products installed by a licensed HVAC technician.
Page 57 10. For resetting of power or the circuit breakers and replacement of other types of fuses, both internal and external. 11. For any damage caused by the use of dirty, recycled, or wrong type of refrigerants and lubricants. 12. For damage due to moisture, air, dust, sand, dirt, etc., that have been allowed into the system. 13.
Page 58 negotiations, representations, or promises, whether oral or written, of either party shall be deemed to have been merged herein. If any part of this warranty agreement shall be invalidated for any reason, such part shall be deleted, and the remainder shall be una ected and shall continue in full force and e ect. This Warranty provides you certain legal rights and you may also have other rights, which vary from State to State.
Page 59 12172024...
Page 60 NOTE ABOUT FUSE SPECIFICATIONS • The air conditioner’s circuit board (PCB) may be designed with a fuse to provide overcurrent protection. This fuse must be replaces with identical component. • The speciﬁcations of the fuse, if equipped, are printed on the circuit board, examples of such are T5A/250VAC and T10A/250VAC.
Page 61 11. Checks to the refrigeration equipment Where electrical components are being changed, they shall be ﬁt for the purpose and to the correct speciﬁcation. At all times the manufacturer’s maintenance and service guidelines shall be followed. If in doubt consult the manufacturer’s technical department for assistance.

This manual is also suitable for:

Ch-rs24mahu Ch-rs30mahu Ch-rs36lcahu Ch-rs48lcahu Ch-rs60lcahu Ch-res24-230vo ... Show all