Gree MULTI21 CAS12HP230V1AC Page 1 Installation Manual Download

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CEILING CASSETTE

DUCTLESS SYSTEM

INSTALLATION MANUAL

Models:

CAS12HP230V1AC -12,000 BTUH
CAS18HP230V1AC -18,000 BTUH
CAS24HP230V1AC - 24,000 BTUH

Summary of Contents for MULTI21 CAS12HP230V1AC

Page 1: ...CEILING CASSETTE DUCTLESS SYSTEM INSTALLATION MANUAL Models CAS12HP230V1AC 12 000 BTUH CAS18HP230V1AC 18 000 BTUH CAS24HP230V1AC 24 000 BTUH ...

Page 2: ...he back cover Retain both the manual and installation record for future reference Table of Contents Safety Precautions 3 System Requirements 4 Nomenclature 4 Suggested Tools 5 Product Dimensions 6 Product Overview 7 Installation of Ceiling Cassette 8 Installation of Refrigerant Piping 10 Installation of Condensate Piping 12 Installation of Power Wiring 13 Installing of Wired Controller 14 Installi...

Page 3: ... heat pumps and refrigeration systems are hazardous due to high voltage electrical components high refrigerant pressures and moving parts WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death Before installing servicing or modifying the system the main electrical disconnect switch must be in the OFF position There may be more than one disconnect sw...

Page 4: ...INAGE Recommended condensate drainage system use pipe either the same diameter or with the diameter larger excluding the raising section than that of the connecting pipe nominal diameter 1 in outside diameter 1 1 4 in Note Insulate condensate all condensate drain pipes to prevent sweating and possible water damage NOMENCLATURE Series Designation Product Type S System O Outdoor units CAS Ceiling Ca...

Page 5: ... Wrench Torque Wrench Hex Keys or Allen Wrenches Drill Drill Bits Hole Saw Pipe Cutter Screwdrivers Phillips Flatblade Manifold and Gauges Level R410A Flaring Tool Clamp on Amp Meter Vacuum Pump Safety Glasses Work Gloves RefrigerantScale Micron Gauge 5 ...

Page 6: ...PRODUCTS DIMENSIONS Ceiling Cassette Dimensions Units Inch mm Minimum Indoor Clearance Units Inch mm 6 ...

Page 7: ...PRODUCT OVERVIEW XK 19 Tether Wired Controller Remote Controller 7 ...

Page 8: ...ter can be easily accessed for cleaning Leave enough free space to allow access for routine maintenance Install at least 10 ft 3 m away from the antenna of TV set or radio Operation of the air conditioner may interfere with radio or TV reception in areas where reception is weak An amplifier may be required for the affected device Do not install in a laundry room or by a swimming POOL The location ...

Page 9: ...e threaded hanger bolts Insert the unit mounting brackets between washers and then fasten it securely Step 5 Confirming Position of Ceiling Cassette 1 Adjust height of Ceiling Cassette main body to align with false ceiling Be sure to confirm this otherwisecondensation may form due to air leakage etc Adjust mounting nuts as needed 2 Confirm that the Ceiling Cassette main body is horizontally levele...

Page 10: ... slant to the outdoors 3 Insert a wall sleeve into hole to prevent damage to refrigerant pipes insulation condensate drain hose and wiring 4 Proper weather proofing of the wall surface and wall sleeve is essential to assure a trouble free installation Apply sealant caulking or equivalent weather proofing material around the perimeter of the wall sleeve interior exterior to eliminate outdoor air an...

Page 11: ... Feed refrigerant pipes drain hose and interconnecting wires assembly through wall hole from outdoor to the Ceiling Cassette 2 Adjust the length and carefully bend refrigerant pipes to meet indoor unit refrigerant pipe connections with proper tools to avoid kinks 3 Apply a small amount of refrigerant oil to the flare connection on the refrigerant pipes Torque Table Pipe Diameter inch mm Nut Size i...

Page 12: ...ameter or with the diameter larger excluding the raising section than that of the connecting pipe The Ceiling Cassette drainage port diameter is 1 in 25 mm OD Pitch the condensate drain pipes at a gradual 2 5 pitch Example in drop over a10 in length without obstructions Use pipe hanger brackets to support the condensate drain pipe from dropping Insulate all condensate drain pipe to prevent sweatin...

Page 13: ... valve is recommended to shut off the system if the auxiliary pump fails Step 8 Electrical Connections to Ceiling Cassette WARNING Disconnect all electrical power to unit including disconnects fuses and circuit breakers 1 Adjust the length of the interconnecting wires so that it can easily reach the Ceiling Cassette electrical control box 2 Open electrical control box cover and route the interconn...

Page 14: ... Disconnect Switch Accessory Kit Part No DFS SWITCH A to break interconnecting wires going to the N 1 2 3 terminals on the indoor unit as shown in the wiring diagram below Step 9 Installing Wired Controller to Ceiling Cassette 1 Open decorative grille and locate 4 pin connector for wired controller on Ceiling Cassette main body 2 Route wired controller wires to 4 pin connector and connect wired co...

Page 15: ...ctrical junction box if required with screws provided 4 Plug wire cable from Ceiling Cassette into the back of Wired Controller 5 Attach the Wired Controller to backplate on the wall Step 10 Outdoor Unit Wire Connections See Installation Instructions shipped with the outdoor unit 15 ...

Page 16: ...oil 4 Install field supplied ductwork Recommended ductwork is either an insulated flex duct or insulated sheet metal duct suitable for working temperatures up to 140 deg F 60 deg C CAUTION Ventilated air must not exceed 10 of the total airflow or problems with operation will result 5 Use a field supplied power ventilation fan to increase airflow to meet job requirements Follow the manufacturer s i...

Page 17: ...le to matching connectors on the ceiling cassette body 5 Complete the Decorative grille attachment by hooking the remaining two 2 corners to the Ceiling Cassette main body NOTE Be careful not to pinch the swing louver motor wires between the decorative grille and ceiling cassette main body 6 Find the four 4 height adjustment screws located on the corners of the decorative grille Use the four 4 hei...

Page 18: ...r gap to seal between decorative grille and Ceiling Cassette main body may cause condensation The decorative grille aligns correctly with false ceiling The is a seal between decorative grille and false ceiling must be between 1 4 in 6mm to 3 8 in 9mm all the way around the unit Adjust the hanger bolts and nuts to change gap Step 12 Start Up Check Outdoor Unit See Installation Instructions supplied...

Page 19: ... Step 14 Test Condensate Disposal System The Ceiling Cassette contains a condensate pump and float switch Test the condensate disposal system by the following 1 Remove grille and frame from the unit and find the drainage port 2 Locate and Remove the access cover 3 Place the unit in cooling mode and wait until the compressor turns on 4 Slowly add 20 to 24 oz of a water bottle to the drain pan 5 Wat...

Page 20: ...apor when cooling coming out of the indoor extremely humid warm air unit when system is running Solution The fog or water vapor will disappear as the system cools and dehumidifies the room space You hear a slight cracking sound when the system stops or starts Cause It is normal for the system to make slight cracking sounds from parts expanding and contracting during system starts and stops Solutio...

Page 21: ...mperature Sensor Indoor Configuration Jumper C5 Missing Configuration Jumper on Indoor Control Board High Pressure Protection E1 Too much refrigerant or High Ambient conditions or low airflow High Discharge Temp Protection E4 Compressor Discharge High Temperature Protection High Current Protection E5 Power Supply is Not Stable and Voltage Range too large Communication Error E6 Communication Failur...

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Page 24: ... UNIT INFORMATION Model No ___________________________________ __ Serial No _____________________________ ________ INSTALLATION INFORMATION Date Installed _____________________________________ DEALERSHIP INSTALLER INFORMATION Company Name _____________________________________ Address ________________________________ _____ Phone Number _____________________________________ Technician Name _________...

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