Loading...
BLD2023-0337_Manufacturer_Specifications_and_Installation_Instructions_3.15.2023_10.34.47_AM_3422400DA/K/N DAIKIN ROOM AIR CONDITIONER INSTALLATION MANUAL R410A Split Series <'IN VERTER Installation manual Manuel d'installation Manual de instalacion MODELS 2MXS18NMVJU 3MXS24NMVJU 4MXS36NMVJU 2MXL18QMVJU 3MXL24QMVJU Contents Safety Considerations .................................... 1 Accessories..................................................... 3 Precautions for Selecting a Location ........... 3 Precautions on Installation ............................ 4 Outdoor Unit Installation Diagram ................ 4 Connections (connection port) ..................... 5 How to Use Reducers ..................................... 6 Installation Space Requirements .................. 7 Selecting a Location for Installation of the IndoorUnits ..................................................... 7 Outdoor Unit Installation ................................ 8 1. Installing the outdoor unit ............................................ 8 2. Drain work................................................................... 8 3. Refrigerant piping........................................................ 8 4. Pressure test and evacuating system .......................... 9 5. Refilling refrigerant......................................................10 6. Charging with refrigerant.............................................10 7. Refrigerant piping work..............................................11 8. Flaring the pipe end.....................................................11 Wiring............................................................... 12 Priority Room Setting ..................................... 14 Night Quiet Mode setting ............................... 15 COOL/ HEAT mode lock [S15] ....................... 15 Pump Down Operation ................................... 16 Trial Operation and Testing ............................ 17 1. Wiring error check.......................................................17 2. Trial operation and testing...........................................18 3. Test items....................................................................18 Safety Considerations Read these Safety Considerations for Installation carefully before installing an air conditioner or heat pump. After completing the installation, make sure that the unit operates properly during the startup operation. Instruct the user on how to operate and maintain the unit. Inform users that they should store this installation manual with the operation manual for future reference. Always use a licensed installer or contractor to install this product. Improper installation can result in water or refrigerant leakage, electric shock, fire, or explosion. Meanings of DANGER, WARNING, CAUTION, and NOTE Symbols: QDANGER ......••••• Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. QWARNING ......••• Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. QCAUTION ......•••• Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. It may also be used to alert against unsafe practices. QNOTE ............•••• Indicates situations that may result in equipment or property -damage accidents only. Qt, DANGER • Refrigerant gas is heavier than air and replaces oxygen. A massive leak can lead to oxygen depletion, especially in basements, and an asphyxiation hazard could occur leading to serious injury or death. • Do not ground units to water pipes, gas pipes, telephone wires, or lightning rods as incomplete grounding can cause a severe shock hazard resulting in severe injury or death. Additionally, grounding to gas pipes could cause a gas leak and potential explosion causing severe injury or death. • If refrigerant gas leaks during installation, ventilate the area immediately. Refrigerant gas may produce toxic gas if it comes into contact with fire. Exposure to this gas could cause severe injury or death. • After completing the installation work, check that the refrigerant gas does not leak throughout the system. • Do not install unit in an area where flammable materials are present due to risk of explosions that can cause serious injury or death. • Safely dispose all packing and transportation materials in accordance with federal/state/local laws or ordinances. Packing materials such as nails and other metal or wood parts, including plastic packing materials used for transportation may cause injuries or death by suffocation. Qi, WARNING • Only qualified personnel must carry out the installation work. Installation must be done in accordance with this installation manual. Improper installation may result in water leakage, electric shock, or fire. • When installing the unit in a small room, take measures to keep the refrigerant concentration from exceeding allowable safety limits. Excessive refrigerant leaks, in the event of an accident in a closed ambient space, can lead to oxygen deficiency. • Use only specified accessories and parts for installation work. Failure to use specified parts may result in water leakage, electric shock, fire, or the unit falling. • Install the air conditioner or heat pump on a foundation strong enough that it can withstand the weight of the unit. A foundation of insufficient strength may result in the unit falling and causing injuries. 1 ■ English • Take into account strong winds, typhoons, or earthquakes when installing. Improper installation may result in the unit falling and causing accidents. • Make sure that a separate power supply circuit is provided for this unit and that all electrical work is carried out by qualified personnel according to local, state, and national regulations. An insufficient power supply capacity or improper electrical construction may lead to electric shock or fire. • Make sure that all wiring is secured, that specified wires are used, and that no external forces act on the terminal connections or wires. Improper connections or installation may result in fire. • When wiring, position the wires so that the electrical wiring box cover can be securely fastened. Improper positioning of the electrical wiring box cover may result in electric shock, fire, or the terminals overheating. • Before touching electrical parts, turn off the unit. • It is recommended to install a ground fault circuit interrupter if one is not already available. This helps prevent electric shock or fire. • Securely fasten the outdoor unit terminal cover (panel). If the terminal cover/panel is not installed properly, dust or water may enter the outdoor unit causing fire or electric shock. • When installing or relocating the system, keep the refrigerant circuit free from substances other than the specified refrigerant (R410A) such as air. Any presence of air or other foreign substance in the refrigerant circuit can cause an abnormal pressure rise or rupture, resulting in injury. • Do not change the setting of the protection devices. If the pressure switch, thermal switch, or other protection device is shorted and operated forcibly, or parts other than those specified by Daikin are used, fire or explosion may occur. Q CAUTION • Do not touch the switch with wet fingers. Touching a switch with wet fingers can cause electric shock. • Do not allow children to play on or around the unit to prevent injury. • The heat exchanger fins are sharp enough to cut. To avoid injury wear gloves or cover the fins while working around them. • Do not touch the refrigerant pipes during and immediately after operation as the refrigerant pipes may be hot or cold, depending on the condition of the refrigerant flowing through the refrigerant piping, compressor, and other refrigerant cycle parts. Your hands may suffer burns or frostbite if you touch the refrigerant pipes. To avoid injury, give the pipes time to return to normal temperature or, if you must touch them, be sure to wear proper gloves. • Install drain piping to proper drainage. Improper drain piping may result in water leakage and property damage. • Insulate piping to prevent condensation. • Be careful when transporting the product. • Do not turn off the power immediately after stopping operation. Always wait for at least 5 minutes before turning off the power. Otherwise, water leakage may occur. • Do not use a charging cylinder. Using a charging cylinder may cause the refrigerant to deteriorate. • Refrigerant R410A in the system must be kept clean, dry, and tight. (a) Clean and Dry -- Foreign materials (including mineral oils such as SUNISO oil or moisture) should be prevented from getting into the system. (b) Tight -- R410A does not contain any chlorine, does not destroy the ozone layer, and does not reduce the earths protection again harmful ultraviolet radiation. R410A can contribute to the greenhouse effect if it is released. Therefore take proper measures to check for the tightness of the refrigerant piping installation. Read the chapter Refrigerant Piping Work and follow the procedures. • Since R410A is a blend, the required additional refrigerant must be charged in its liquid state. If the refrigerant is charged in a state of gas, its composition can change and the system will not work properly. • The indoor unit is for R410A. See the catalog for indoor models that can be connected. Normal operation is not possible when connected to other units. • Remote controller (wireless kit) transmitting distance can be shorter than expected in rooms with electronic fluorescent lamps (inverter or rapid start types). Install the indoor unit far away from fluorescent lamps as much as possible. • Indoor units are for indoor installation only. Outdoor units can be installed either outdoors or indoors. This unit is for indoor use. • Do not install the air conditioner or heat pump in the following locations: (a) Where a mineral oil mist or oil spray or vapor is produced, for example, in a kitchen. Plastic parts may deteriorate and fall off or result in water leakage. (b) Where corrosive gas, such as sulfurous acid gas, is produced. Corroding copper pipes or soldered parts may result in refrigerant leakage. (c) Near machinery emitting electromagnetic waves. Electromagnetic waves may disturb the operation of the control system and cause the unit to malfunction. (d) Where flammable gas may leak, where there is carbon fiber, or ignitable dust suspension in the air, or where volatile flammables such as thinner or gasoline are handled. Operating the unit in such conditions can cause a fire. • Take adequate measures to prevent the outdoor unit from being used as a shelter by small animals. Small animals making contact with electrical parts can cause malfunctions, smoke, or fire. Instruct the user to keep the area around the unit clean. Qt, NOTE • Install the power supply and inter -unit wires for the indoor and outdoor units at least 3.5ft away from televisions or radios to prevent image interference or noise. Depending on the radio waves, a distance of 3.5ft may not be sufficient to eliminate the noise. • Dismantling the unit, treatment of the refrigerant, oil and additional parts must be done in accordance with the relevant local, state, and national regulations. • Do not use the following tools that are used with conventional refrigerants: gauge manifold, charge hose, gas leak detector, reverse flow check valve, refrigerant charge base, vacuum gauge, or refrigerant recovery equipment. • If the conventional refrigerant and refrigerator oil are mixed in R410A, the refrigerant may deteriorate. • This air conditioner or heat pump is an appliance that should not be accessible to the general public. • As design pressure is 478 psi, the wall thickness of field - installed pipes should be selected in accordance with the relevant local, state, and national regulations. s N C w ■ English 2 Accessories QA Installation manual © Drain socket © Drain cap (1) 1 1 (n 6 This is at the bottom of the packaging. QD Drain cap (2) OE Reducer assy 0 Warranty D 3 (0 1 1 Precautions for Selecting a Location 1) Choose a place solid enough to bear the weight and vibration of the unit, where the operating sound will not be amplified. 2) Choose a location where the hot air discharged from the unit or the operating sound will not cause a nuisance to the neighbors of the user. 3) Avoid locations, such as near bedrooms, where the operating sound may cause disturbance. 4) There must be sufficient space to carry the unit into and out of the site. 5) There must be sufficient space for air passage and no obstructions around the air inlet and the air outlet. 6) The site must not be prone to flammable gas leaks in the surrounding area. 7) Install units, power cords, and inter -unit wires at least 10ft (3m) from television and radio sets. (This is to prevent interference to images and sounds. Noise may be produced even if they are more than 10ft (3m) away depending on radio wave conditions.) 8) In coastal areas or other places with salty atmosphere or one containing sulphate gas, corrosion may shorten the life of the air conditioner. 9) Since water will flow from the drain of the outdoor unit, do not place under the unit anything which must be kept away from moisture. NOTE Cannot be installed suspended from a ceiling or stacked. n t-AI ITInm When operating the air conditioner in a low outdoor ambient temperature, be sure to follow the instructions described below. • To prevent exposure to wind, install the outdoor unit with its suction side facing the wall. • Never install the outdoor unit at a site where the suction side may be exposed directly to wind. • To prevent exposure to wind, it is recommended to install a baffle plate on the air discharge side of the outdoor unit. • In heavy snowfall areas, select an installation site where the snow will not affect the unit. • If there is a likelihood of snow accumulating on the outdoor unit, attach a snow protection hood. • In high humidity areas or heavy snow areas, it is recommended to attach a drain pan heater to prevent ice build-up from the bottom frame. • Construct a large canopy. • Construct a pedestal. - - I s" Install the unit high enough off the ground to prevent burying in snow. 0 English Precautions on Installation • Check the strength and level of the installation surface so that the unit does not cause any operating vibrations or noise after installation. • Fix the unit in place securely using foundation bolts, as in the figure. (Prepare 4 sets of 5/16 inch (M8) or 3/8 inch (M10) foundation bolts, nuts and washers; all separately available.) • It is best to screw in the foundation bolts until their ends are 3/4 inch (20mm) from the foundation surface. Outdoor Unit Installation Diagram E E A N ACAUTION • Do not connect the embedded branch piping and the outdoor unit when only carrying out piping work without connecting the indoor unit in order to add another indoor unit later. Make sure no dirt or moisture gets into either side of the embedded branch piping. Refer to "7. Refrigerant piping work" on page 11 for details. • It is not possible to have only 1 indoor unit connected. Be sure to connect at least 2 indoor units. Cut thermal insulation pipe to an appropriate length and wrap it with tape, making sure that no gap is left in the insulation pipe's cut line. Allow 11-13/16" (300mm) of work space below the ceiling surface. Where there is a danger of the unit falling, use foot bolts, or wires. In sites with poor drainage, use block bases for the outdoor unit. Adjust foot height until the unit is level. Otherwise, water leakage or pooling of water may occur. Top plate 23-518 600 / �FOpt bolt -hot ° e centers) unit :inch (mm) Level mounting base (available separately) Also insulate the connection on the outdoor unit. Wrap the insulation pipe with finishing tape from bottom to top. Allow space for piping and electrical servicing. /Service lid , - ao IStop valve cover - av Clamping material Use tape or insulating material on all connections to prevent air Insulation tube from getting in between the copper piping and the insulation tube. J Stop valve cover Be sure to do this if the outdoor unit is installed at a higher elevation than are any of the indoor units connected to it. 0 English 4 Connections (connection port) Install the indoor unit according to the table below, which shows the relationship between the class of indoor unit and the corresponding port. The total indoor unit class that can be connected to this unit: 2MXS18*, 2MXL18* - Up to 24000 Btu 3MXS24*, 3MXL24* - Up to 39000 Btu 4MXS36* - Up to 48000 Btu The line set piping size is determined by the size of the indoor unit fittings. Reducers are used at the outdoor unit to accommodate the correct gas line pipe size. Port 2MXS18*, 2MXL18* 3MXS24*, 3MXL24* 4MXS36* A 07, 09, 12 07, 09, 12 07, 09, 12 B 07, 09, 12, 15 07, 09, 12, 15, 18 07, 09, 12, 15, 18 c 07, 09, 12, 15, 18 07, 09, 12, 15, 18 D 0 0 0 ❑ ❑ 07, 09, 12, 155 18, 24 0 : Use a reducer to connect pipes. # : Use No. 2 and 4 reducers o : Use No. 5 and 6 reducers ❑ : Use No. 1 and 3 reducers Refer to "How to Use Reducers" on page 6 for information on reducer numbers and their shapes. 0 English How to Use Reducers No.1 No.2 �5/8" �1/2" —�1/2" —�3/8" Gasket (1) No.3 No.4 �5/8" � 1 /2" —�1/2" —�3/8" Gasket (2) • Use the reducers supplied with the unit as described below. N No.5 No.6 c �5/8" �5/8" LU —�3/8" —�3/8" Reduce and gasket (1) Connecting a pipe of �1/2 inch (12.7mm) to a gas pipe connection port for �5/8 inch (15.9mm) No. 1 Inter -unit piping Be sure to attach No. 3 Flare nut (for �5/8 inch (15.9mm)) the gasket. Connection port of outdoor unit (2) Connecting a pipe of �3/8 inch (9.5mm) to a gas pipe connection port for �5/8 inch (15.9mm) : Flare nut (for �3/8 inch (9.5mm)) No. 6 No. 5 Be sure to attach the gasket. Connection port of outdoor unit (3) Connecting a pipe of �3/8 inch (9.5mm) to a gas pipe connection port for �1/2 inch (12.7mm) : No. 2 �No Flare nut (for �1/2 inch (12.7mm)) Be sure to attach the gasket. Connection port of outdoor unit • When using the reducer packing shown above, be careful not to overtighten the nut, or the smaller pipe may become damaged. (Apply about 2/3 to 3/3 the normal torque.) • Apply a coat of refrigeration oil to the threaded connection port of the outdoor unit where the flare nut comes in. • Use an appropriate wrench to avoid damaging the connection thread by overtightening the flare nut. Flare nut tightening torque �3/8 inch (9.5mm) 24-1/8 — 29-1/2ft • Ibf (32.7-39.9N • m) �1/2 inch (12.7mm) 36-1/2 — 44-1/2ft • Ibf (49.5-60.3N • m) �5/8 inch (15.9mm) 45-5/8 — 55-5/8ft • Ibf (61.8-75.4N • m) 0 English 6 Installation Space Requirements • Where a wall or other obstacle is in the path of outdoor unit's intake or exhaust airflow, follow the installation space requirements below. • For any of the below installation patterns, the wall height on the outlet side should be 47-1/4 inch (1200mm) or less. Wall facing one side Walls facing two sides More than More than 3-15/16 (100) 13-3/4 (350) } I More than More than 4 More 3-15/16 (100) 13-3/4 47-1/4 than � (350) (1200) 3-15/16 More than or less o (100) 13-3/4 (350) More than / More than 1-15/16 (50) 1-15/16 (50) Top view Side view Walls facing three sides More than 3-15/16 (100) More than 1-15/16 (50) IMore than 13-3/4 (350) Top view unit: inch (mm) Selecting a Location for Installation of the Indoor Units • The maximum allowable length of refrigerant piping, and the maximum allowable height difference between the outdoor and indoor units, are listed below. (The shorter the refrigerant piping, the better the performance. Connect so that the piping is as short as possible. Shortest allowable length per room is 10ft (3m).) Outdoor unit capacity class 2MXS18*, 2MXL18* 3MXS24*, 4MXS36*, 3MXL24* Piping to each indoor unit 82ft (25m) max. Total length of piping between all units 164ft (50m) max. 230ft (70m) max. Indoor unit Outdoor unit Level difference: Level 49-1/4ft (15m) difference: max. 24-5/8ft (7.5m) max. If the outdoor unit is positioned higher than the indoor units Level difference: 49-1/4ft (15m) max. Level difference: 24-5/8ft (7.5m) Outdoor unit max. 10 Indoor unit If the outdoor unit is positioned lower than one or more indoor units. 0 English Outdoor Unit Installation Ul C 1. Installing the outdoor unit W 1) When installing the outdoor unit, refer to "Precautions for Selecting a Location" on page 3 and the "Outdoor Unit Installation Diagram" on page 4. 2) If drain work is necessary, follow the procedures below. 2. Drain work Qt. CAUTION In cold areas, do not use a drain socket, drain caps (1,2) and a drain hose with the outdoor unit. (Drain water may freeze, impairing heating performance.) • If the drain port is covered by a mounting base or floor surface, place additional foot bases of at least 1-1/4 inch (30mm) in height under the outdoor unit's feet. 1) Attach © drain cap (1) and (0) drain cap (2). 2) Attach © drain socket. • When attaching © drain socket to the bottom frame, make sure to connect the drain hose to the drain socket first. 3. Refrigerant piping A I AI ITIInAI © Drain cap (1) QD Drain cap A A ©Drain socket Air outlet side @ Drain cap (2) C, Bottom frame / Drain cap Bottom frame ©Drain socket -� Pinch the bottom frame in. Hose (available commercially, inner dia. 5/8 " (16mm)) • Use the flare nut fixed to the main unit. (This is to prevent the flare nut from cracking as a result of deterioration over time.) • To prevent gas leakage, apply refrigeration oil only to the inner surface of the flare. (Use refrigeration oil for R410A.) • Use a torque wrench when tightening the flare nuts to prevent damage to the flare nuts and gas leakage. • Align the centers of both flares and tighten the flare nuts 3 or 4 turns by hand, then tighten them fully with a spanner and a torque wrench. Apply oil Tighten Apply refrigeration Torque wrench Do not apply refrigeration oil to the inner oil to the outer surface. surface of the flare. Flare nut Spanner Do not apply refrigeration oil to r the flare nut to avoid tightening Piping union with excessive torque. Flare nut Flare nut tightening torque �1/4 inch (6.4mm) 10-1/2 — 12-3/4ft • Ibf (14.2-17.2N • m) �3/8 inch (9.5mm) 24-1/8 — 29-1/2ft • Ibf (32.7-39.9N • m) �1/2 inch (12.7mm) 36-1/2 — 44-1/2ft • Ibf (49.5-60.3N • m) �5/8 inch (15.9mm) 45-5/8 — 55-5/8ft • Ibf (61.8-75.4N • m) Width across flats 11/16 inch (17mm) 3/4 inch (19mm) 7/8 inch (22mm) 1-1/16 inch (27mm) Valve cap tightening torque 10-1/2-12-5/8ft • Ibf 12-5/8-15-3/8ft • Ibf 16-20-1/4ft • Ibf 35-3/8 — 44-1/8ft • Ibf (14.2-17.2N • m) (17.1-20.9N • m) (21.6-27.4N • m) (48-59.8N • m) Service port cap tightening torque 8-10-7/8ft • Ibf (10.8-14.7N • m) 0 English 8 Outdoor Unit Installation 4. Pressure test and evacuating system AWARNING • Do not mix any substance other than the specified refrigerant (R410A) into the refrigeration cycle. • If refrigerant gas leaks should occur, ventilate the room as soon and as much as possible. • R410A, as well as other refrigerants, should always be recovered and never be released directly into the environment. • Use a vacuum pump for R410A exclusively. Using the same vacuum pump for different refrigerants may damage the vacuum pump or the unit. Q CAUTION It is highly recommended that you do not open/close the stop valves when the outdoor temperature is below —5°F (-21 °C) as this may result in refrigerant leakage. • When piping work is complete, it is necessary to perform a pressure test Compound Pressure High-pressure and evacuate system with a vacuum pump. pressure gauge meter valve • If using additional refrigerant, purge the air from the refrigerant pipes and \ I indoor unit using a vacuum pump, then charge additional refrigerant. Gauge • Use a hexagonal wrench (3/16 inch (4mm)) to operate the stop valve rod. manifold I Liquid • All refrigerant pipe joints should be tightened with a torque wrench to the / stop specified tightening torque. Low-pressure Valve caps valve valve o 0 Charging Ill hoses Vacuum pump Service port \ Gas stop valve 1) Pressurize the liquid pipe and gas pipe from the service ports of each stop valve to 550psi (3.8MPa) (do not pressurize more than 550psi (3.8MPa)) for 1 hour minimum, 24 hours recommended. If there is a pressure drop, check for leaks, make repairs and perform the pressure test again. 2) Connect the gauge manifold's charging hose to the gas stop valve's service port. 3) Fully open the gauge manifold's low-pressure valve (Lo) and completely close its high-pressure valve (Hi). (High-pressure valve will require no further operation.) 4) Evacuate system using vacuum pump to below 500 microns for 1 hour minimum. 5) Close the gauge manifold's low-pressure valve (Lo) and stop vacuum pump. (Maintain this condition for 4-5 minutes to make sure that the compound pressure gauge pointer does not swing back.)*' 6) Remove the valve caps from the liquid stop value and gas stop valve. 7) Turn the liquid stop valve's rod 90o counter -clockwise with a hexagonal wrench to open the valve. Close it after 5 seconds, and check for gas leakage. Using soapy water, check for gas leakage from the indoor unit's flare and outdoor unit's flare and valve rods. After the check is complete, wipe all soapy water off. 8) Disconnect the charging hose from the gas stop valve's service port, then fully open liquid and gas stop valves. (Do not attempt to turn the valve rod further than it can go.) 9) Tighten the valve caps and service port caps for the liquid and gas stop valves with a torque wrench to the specified torques. Refer to "3. Refrigerant piping" on page 8 for details. *' If the compound pressure gauge pointer swings back, the refrigerant may have water content or there may be a loose pipe joint. Check all pipe joints and retighten nuts as needed, then repeat steps 3) through 5). 0 English J. Refilling refrigerant Check the type of refrigerant to be used on the machine nameplate. Precautions when adding R410A Fill from the liquid pipe in liquid form. R410A is a mixed refrigerant, so adding it in gas form may cause the refrigerant composition to change, preventing normal operation. 1) Before filling, check whether the cylinder has a siphon attached or not. (It should have something like "liquid filling siphon attached" displayed on it.) Filling a cylinder with an attached siphon Filling other cylinders Stand the cylinder upright when filling. Turn the cylinder upside-down when filling. There is a siphon pipe inside, so the cylinder need not be upside-down to fill with liquid. • Be sure to use the R410A tools to ensure pressure and to prevent foreign objects entering. 6. Charging with refrigerant • If the total length of piping for all rooms exceeds the figure listed below, additionally charge with 0.21oz/ft (20g/m) of refrigerant (R410A) for each additional piping length. Outdoor unit capacity class 2MXS18*, 2MXL18* 3MXS24*, 4MXS36*, 3MXL24* Total length of piping for all rooms 98-3/8ft (30m) 131-5/8ft (40m) • If additional refrigerant has been charged list the amount added on the nameplate on the reverse side of the service lid. Q! CAUTION Even though the stop valve is fully closed, the refrigerant may slowly leak out; do not leave the flare nut removed for a long period of time. ■ English 10 Outdoor Unit Installation 7. Refrigerant piping work 7-1. Cautions on pipe handling Protect the open end of the pipe from dust and moisture. All pipe bends should be as gentle as possible. Use a pipe bender for bending. 7-2. Selection of copper and heat insulation materials When using commercial copper pipes and fittings, observe the following: • Insulation material: Polyethylene foam Heat transfer rate: 0.041 to 0.052W/mK (0.024 to 0.030Btu/fth°F (0.035 to 0.045kcal/mh°C)) Be sure to use insulation that is designed for use with HVAC Systems. • Be sure to insulate both the gas and liquid piping and observe the insulation dimensions as below. Wall ' Be sure to place a cap. Rain If no flare cap is o available, cover the flare mouth with tape to keep din and water out. I7771 Gas Gas p insula Inter -unit wire Liquid pipe Liquid pipe O\ insulation Finishing tape Drain hose Piping size Minimum bend radius Piping thickness Thermal insulation size Thermal insulation thickness O.D. 3/8 inch 1-3/16 inch (30mm) I.D. 15/32-19/32 inch (9.5mm) or more 0.031 inch (0.8mm) (12-15mm) Gas side (C1220T-0) O.D. 1/2 inch 1-9/16 inch (40mm) I.D. 9/16-5/8 inch (12.7mm ) or more (14-16mm ) 13/32 inch O.D. 5/8 inch 1-15/16 inch (50mm) 0.039 inch (1.0mm) I.D. 5/8-13/16 inch (10mm) Min. (15.9mm) or more (C1220T-0) (16-20mm) Liquid side O.D. 1/4 inch 1-3/16 inch (30mm) 0.031 inch (0.8mm) I.D. 5/16-13/32 inch (6.4mm) or more (C1220T-0) (8-10mm) • Use separate thermal insulation pipes for gas and liquid refrigerant pipes. Flaring the pipe end 1) Cut the pipe end with a pipe cutter. Check Va nd must 2) Remove burrs with the cut surface facing downward Flare's innerlared in so that the chips do not enter the pipe. surface mustircle. be flaw-free3 Put the flare nut on the I e. that thepp fitted. 4) Flare the pipe. Cut exactly at ri ht an les. Remove burrs. 5) Check that the flaring is properly made. Flaring Set exactly at the position shown below. A Die Flare tool for R410A I Conventional flare tool Clutch -type Clutch -type (Rigid -type) Wing -nut type (Imperial -type) q 0-0.020 inch (0-0.5mm) 0.039-0.059 inch (1.0-1.5mm) 1 0.059-0.079 inch (1.5-2.Omm) Q WARNING • Do not use mineral oil on flared part. • Prevent mineral oil from getting into the system as this would reduce the service life of the units. • Never use piping which has been used for previous installations. Only use parts which are delivered with the unit. • Never install a dryer to this R410A unit in order to guarantee its service life. • The drying material may dissolve and damage the system. • Incomplete flaring may cause refrigerant gas leakage. 11 0 English Wiring Ul C n \A/AQAIIAIr W � ...--•. a ■... v • Do not use tapped wires, extension cords, or starburst connections, as they may cause overheating, electric shock, or fire. • Do not use locally purchased electrical parts inside the product. (Do not branch the power for the drain pump, etc., from the terminal block.) Doing so may cause electric shock or fire. • Be sure to install a ground fault circuit interrupter. (One that can handle higher harmonics.) (This unit uses an inverter. Therefore, a ground fault circuit interrupter capable of handling higher harmonics must be used in order to prevent the ground fault circuit interrupter malfunctioning.) • Use an all -pole disconnection type circuit breaker with at least 1/8 inch (3mm) between the contact point gaps. • When carrying out wiring, take care not to pull at the conduit. • Do not connect the power wire to the indoor unit. Doing so may cause electric shock or fire. • Do not turn on the circuit breaker until all work is completed. [Method of Mounting Conduit] • When connecting indoor units for 3 rooms or more, open knockout holes without deforming the conduit mounting plate. 1) Dismount the service lid by removing the 2 screws. 2) Slide the protection plate up and remove it. 3) Pass wires through the conduit and secure them with a lock nut. Lock nut Conduit Knockout hole o 01 Conduit mounting plate Protection plate /7 Conduit mounti ilve cover zzo 0 English 12 Wiring [Wiring procedure] Outdoor unit 1) Strip the insulation from the wire (3/4inch (20mm)). RoAom I 2) Connect the inter -unit wires between the indoor and z 3 [ outdoor units so that the terminal numbers match. °Room Tighten the terminal screws securely. It is recommended 11 z 3 [ that a flathead screwdriver be used to tighten the screws. o �, 3) Be sure to match the symbols for wiring and piping. 4) Pull the wire lightly to make sure that it does not disconnect. Indoor unit 5) Pass the wiring through the cutout on the bottom of the protection plate and attach the protection plate. 6) After completing the work, reattach the service lid to its original position. power supply JBe sure to use the dedicated circuits. Ciroiiit hreakar Ground fault circuit 60Hz 208/230V _ _. n interrupter (— room D room C Room A To room B Use AWG 16 or AWG 14 wire for If the length of a connection wire the power supply and inter -unit is 33ft (10m) or more. use AWG14 wire. wires. • - °�l��`�ll °lil� nn---■- �r Shape the wires so that there is y no lifting of the service hatch or other structural parts. O ACAUTION O Use the specified wires and connect them securely. Precautions to be taken for power supply wiring Screw Round crimp -style • When using stranded wires, make sure to use the round crimp -style terminal Stranded terminal for connection to the power supply terminal block. o wire style terminal Flat washer Flat washer Screw_r aA / Screw Round crimp / \ / j Flat washer Round Round crimp - crimp -style terminal Q Good X Wrong style terminal Arrow view A • When connecting the inter -unit wires to the terminal block using a single core wire, be sure to curl the end of the lead. Improper work may cause heat and fires. Excessive strip length �v Strip wire end may cause electric shock to this point. or current leakage. Q Good X Wrong Q Good X Wrong Stripping wire at terminal block Ground This air conditioner must be grounded. For grounding, follow all local, and state electrical codes. 13 0 English Priority Room Setting N • To use priority room setting, initial settings must be made when the unit is installed. Explain the priority room setting, as iw described below, to the user, and confirm whether or not the user wants to use priority room setting. Setting it in the guest and living rooms is convenient. About the priority room setting function The indoor unit for which priority room setting is applied takes priority in the following cases. 1) Operation mode priority The operation mode of the indoor unit which is set for priority room setting takes priority. If the set indoor unit is operating, all other indoor units do not operate and enter standby mode, according to the operation mode of the set indoor unit. 2) Priority during powerful operation If the indoor unit which is set for priority room setting is operating at powerful, the capabilities of other indoor units will be somewhat reduced. Power supply gives priority to the indoor unit which is set for priority room setting. 3) Quiet operation priority Setting the indoor unit to quiet operation will make the outdoor unit run quietly. Setting procedure Slide the priority room setting switch (SW4) to the on side for the switch that corresponds to the piping connected to the indoor unit to be set. (In the figure below, it is room A.) Once the settings are complete, switch the power on. 0 0 0 O O Service PC -board Remove a o� the switch o o cover o O Priority room setting switch (SW4) o E Screw v E O E ° ON OFF � A O =z E O �o 00 O o � B A 0 English 14 Night Quiet Mode setting • If night quiet mode is to be used, initial settings must be made when the unit is installed. Explain night quiet mode, as described below, to the user, and confirm whether or not the user wants to use night quiet mode. About night quiet mode The night quiet mode function reduces operating noise of the outdoor unit at nighttime. This function is useful if the user is worried about the effects of the operating noise on the neighbors. However, if night quiet mode is running, cooling capacity will be saved. Setting procedure Turn the night quiet mode switch (SW6-1) to on Service PC -board 7Remove the switch Night quiet mode cover O o setting switch or 0 o (SW6-1) o ` Screw O � ON OFF O 1 2 II c V 0 O �1 COOL HEAT O 03 C00IJ HEAT mode lock [S15] • Use the S15 connector to set the unit to only cool or heat. Setting to only heat (H): short-circuit pins 1 and 3 of the connector [S15] Setting to only cool (C) : short-circuit pins 3 and 5 of the connector [S15] The following specifications apply to the connector housing and pins. JST products Housing: VHR-5N Pin: SVH-21T-1,1 Note that forced operation is also possible in COWHEAT mode. COOLmode (C) HEAT mode (H) I I I I I I 000 0 15 0 English Pump Down Operation In order to protect the environment, be sure to pump down when relocating or disposing of the unit. 1) Remove the valve cap from liquid stop valve and gas stop valve. Close 2) Carry out forced cooling operation. �—,► Gas stop valve 3) After 5 to 10 minutes, close the liquid stop valve with a hexagonal Hexagonal wrench. wrench 4) After 2 to 3 minutes, close the gas stop valve and stop forced cooling operation. Liquid stop valve tJValve cap Forced cooling operation 1) Turn off the power. 2) Remove the service lid (2 screws). 3) Remove the service PC -board switch cover (1 screw). 4) Switch SW5 and SW6 to off. 5) Turn the operation mode switch (SW2) to COOL. 6) Screw the service PC -board switch cover back on (1 screw). 7) Turn on the power. 8) Push the forced operation switch (SW1) above the service PC -board cover. (The operation will start.) • Forced cooling operation will stop automatically after about 10 minutes. To stop the operation, push the forced operation switch (SWi ). -Switch SW5 and SW6 to off. ON OFF 2 Service PC -board SW6 ll�l 1 Fr Remove ON OFF o E the switch I� ° /0 cover 4 o Screw 0 a 3 SW5 c 2 0 0 ' E30a i 1 0 � OL EA; 0 ': Operation mode switch (SW2) o -Set to COOL. v`� COOL HEAT _1 0 , 1 Forced operation switch (SWi) Q►. WARNING Do not remove the switch cover unless the power has been turned off. (Risk of electric shock) Ul C W 0 English 16 Trial Operation and Testing • Before starting the trial operation, measure the voltage at the primary side of the circuit breaker. • Check that all liquid and gas stop valves are fully open. • Check that piping and wiring all match. The wiring error check can be conveniently used for underground wiring and other wiring that cannot be directly checked. However, if the outside air temperature is • - the wiring error check function will not operate. 1. Wiring error check This product is capable of automatic correction of wiring errors. Press the wiring error check switch on the outdoor unit service PC -board for about 3 seconds. However, the wiring error check switch will not function for 3 minutes after the safety breaker is turned on. About 15-20 minutes after the switch is pressed, the errors in the connection wiring will be corrected. The service monitor LEDs indicate whether or not correction is possible, as shown in the table below. For details on how to read the LED display, refer to the collective indications label on the reverse side of the top plate or the service manual. Wiring error. check switch If self -correction is not possible, check the indoor unit wiring and piping in the usual (SW3) manner. LED 1 1 2 1 3 4 Message M Flashing Automatic correction impossible Status Flashing • - . - Automatic correction completed * (One or more of LEDs 1 to 4 are ON) Abnormal stop [Note. 3] Wiring correct example Terminal block Service PC -board A 10 20 30 40 0 50 A B *The figure at left shows branch wiring. From Room C From Room B From Room D From Room A to the "kitchen" to the "living room" to the "children's room" to the "bedroom" IG Wiring error check LED lighting sequence after a wiring correction. Order of LED flashing: 2 — 1 — 3 — 4 NOTE 1) For two rooms, LED 3,4 and 5 are not displayed, and for three rooms, LED 4 and 5 is not displayed, and for four rooms, LED 5 is not displayed. 2) After wiring error check operation is completed, LED indication will continue until ordinary operation starts. This is normal. 3) Follow the product diagnosis procedures. (Details of product error diagnosis are listed on the reverse side of the top plate.) 17 0 English t Ul 2. Trial operation and testing W • During the trial operation, first check the operation of each unit individually. After this, check the simultaneous operation of all indoor units. Check both COOL and HEAT operations. 2-1. Measure the supply voltage and make sure that it is within the specified range. 2-2. In COOL operation, select the lowest programmable temperature; in HEAT operation, select the highest programmable temperature. 2-3. Carry out the trial operation following the instructions in the operation manual to ensure that all functions and parts, such as the movement of the flap, are working properly. • To protect the air conditioner, restart operation is disabled for 3 minutes after the system has been turned off. • When trial operation is conducted in HEAT operation directly after the circuit breaker is turned on, in some cases no air will be output for about 3 to 20 minutes in order to protect the air conditioner. • During COOL operation, frost may form on the gas stop valve or other parts. This is normal. 2-4. After running the unit for about 20 minutes, measure the temperatures at the indoor unit inlet and outlet. • If the measurements are above the values shown in the table below, then they are normal. COOL operation HEAT operation Temperature difference between About 14°F (8°C) About 36°F (20oC) inlet and outlet (When running in one room) 2-5. After trial operation is complete, set the temperature to a normal level (780F to 820F (26°C to 28°C) in COOL operation, 680F to 750F (20°C to 24°C) in HEAT operation). • When operating the air conditioner in COOL operation in winter, or HEAT operation in summer, activate trial operation mode by following the instructions in the installation manual for the indoor unit. • The air conditioner draws a small amount of power in its standby mode. If the system is not to be used for some time after installation, shut off the circuit breaker to eliminate unnecessary power consumption. • If the circuit breaker trips to shut off the power to the air conditioner, the system will restore the original operation mode when the circuit breaker is opened again. 3. Test items Test item Symptom Check Indoor and outdoor units are installed properly on solid bases. Fall, vibration, noise No refrigerant gas leaks. Incomplete cooling/heating function Refrigerant gas and liquid pipes and indoor drain hose extension are thermally insulated. Water leakage Draining line is properly installed. Water leakage System is properly grounded. Electrical leakage The electric wires are connected correctly. Incomplete cooling/heating function The specified wires are used for inter -unit wiring. No operation or burn damage Indoor or outdoor unit's air inlet or air outlet are unobstructed. Incomplete cooling/heating function Stop valves are opened. Incomplete cooling/heating function The wiring and piping marks for each indoor unit (room A, room B, room C, and room D) match. Incomplete cooling/heating function The priority room setting is set for only 1 room. The priority room setting will not function. 0 English 18 GOODMAN MANUFACTURING COMPANY, L.P. 5151 San Felipe, Suite 500 Houston, TX 77056 USA DAIKIN INDUSTRIES, LTD. Head office: Umeda Center Bldg., 2-4-12, Nakazaki-Nishi, Kita-ku, Osaka, 530-8323 Japan Tokyo office: JR Shinagawa East Bldg., 2-18-1, Konan, Minato-ku, Tokyo, 108-0075 Japan http://www.daikin.com TCM C US 4STE0 ntertek Two-dimensional bar code is a manufacturing code. 3P379970-8B M15B137 (1511) HT