Air-Conditioners OUTDOOR UNIT PUHY-YMC FOR INSTALLER INSTALLATION MANUAL For safe and correct use, please read this installation manual thoroughly before installing the air-conditioner unit. Remote controller (PAR-F25MA) is available as an optional remote controller.
Contents 1. Safety precautions ..............3 1.1. Before installation and electric work ....... 3 1.2. Before getting installed ........... 3 1.3. Before getting installed (moved) - electrical work ... 4 1.4. Before starting the test run ..........4 2. Combination with indoor units ............. 5 3.
- If the pressure switch, thermal switch, or other protection device is shorted and operated forcibly, or parts other than those specified Carefully read the labels affixed to the main unit. by Mitsubishi Electric are used, fire or explosion may result. 1.2. Before getting installed Warning: •...
1.3. Before getting installed (moved) - 1.4. Before starting the test run electrical work Caution: • Turn on the power at least 12 hours before starting operation. Caution: - Starting operation immediately after turning on the main power • Ground the unit. switch can result in severe damage to internal parts.
2. Combination with indoor units The indoor units connectable to this unit are shown below. Total capacity of Outdoor unit model Quantity of connectable connected indoor unit Model name of connectable indoor unit name indoor unit models PLFY- P32 · 40 · 50 · 63 · 80 · 100 · 125 PUHY-600 300 to 780 PLFY- P20 ·...
4. Outdoor unit configuration The unit (PUHY-600/650/700/750YSMC) consists of a combination of variable capacity units (PUHY-400/500YMC) and constant capacity units (PUHN- 200/250YMC). A CMC-30A (optional) is required when using a combination of these units. Super Y Variable capacity unit Constant capacity unit PUHY-600YSMC PUHN-200YMC PUHY-400YMC...
6. Space required around unit 6.1. Individual installation When unit is surrounded by walls Basic space required A space of at least 250 mm is necessary at the back for inlet air. Taking servicing, etc. from the rear into account, a space of about 450 mm should be provided, the same as at the front.
6.2. Collective installation and continu- ous installation Space required for collective installation and continuous installation: When installing several units, leave the space between each block as shown below considering passage for air and people. A (Must be open) B Wall height (H) C Front D 1000 mm or more E 250 mm or more...
8. Installation of unit 8.1. Location of anchor bolt Mount the constant capacity unit on the left and variable capacity unit on the right of the same frame (as seen from the front of the unit). Allow 10 mm of clearance between the units. •...
Down piping and down wiring precautions When down piping and down wiring are performed, be sure that founda- tion and base work does not block the base through holes. When down piping is performed, make the foundation at least 150 mm high so that the piping can pass under the bottom of the unit.
9. Caution for snow and seasonal wind In cold and/or snowy areas, sufficient countermeasures to wind and snow Note: damages should be taken for operating unit in normal and good condi- 1. Height of frame base for snow damage prevention (H) shall be tion in winter time.
10. Refrigerant piping installation Connecting the piping is a terminal-branch type in which refrigerant piping from the outdoor unit is branched at the terminal and connected to each of the indoor units. The method of connection consists of flare connections at the indoor units, flange connections for the piping of the outdoor unit and flare connections for the liquid, oil balance piping.
10.2. Refrigerant piping system Constant Variable capacity unit capacity unit Constant Variable Distributer (gas) (optional) capacity unit capacity unit Oil balance pipe (optional) I (for distribution within the unit) Gas line B Gas line A Liquid line B Liquid line A Distributer (liguid) (optional) Note 1 Distributer...
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Constant Variable capacity unit capacity unit Distributer (gas) (optional) Oil balance pipe (optional) I (for distribution within the unit) Gas line B Constant Variable capacity unit capacity unit Gas line A Liquid line B Liquid line A Distributer (liguid) (optional) Gas line (main) C Liquid line (main) C :indicates piping connection points...
10.3. Precautions concerning piping connection and valve operation <For variable capacity unit> <When shipped from <After installation> the manufacturer> • Connect piping and operate valves exactly as described in the figure below. • After performing the following distributor (gas) connection, remove the con- necting pipe included with the gas ball valve of the variable capacity unit, and mount the distributor (gas) (optional).
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<For constant capacity unit> • Connect piping and operate valves exactly as described in the figure below. Replace the solid packing. • Gas side connecting piping is already assembled when the equipment is shipped. (See figure on right.) 1 When brazing to connecting pipe with flange, remove the connecting pipe with flange from the ball valve, and braze at the outside of the unit.
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A Valve stem Appropriate tightening torque by torque wrench [Fully closed at the factory, when connecting the piping, when evacuating, and when charging additional refrigerant. Open fully after the operations Copper pipe external dia. (mm) Tightening torque (N·m) / (kg·cm) above are completed.] ø6.35 14 to 18 / 140 to 180...
10.4. Oil balance pipe connection method • Oil balance piping can be took out from the front, bottom or side of the unit (left side for the variable capacity unit, right side for the constant capacity unit). • Connect piping and operate valves exactly as described below. (for details, see item 10.3.) 1 After connecting oil balance pipe, be sure to evacuate using the service port of the variable capacity unit side valve.
10.5. Distributor (gas) connection Taking out piping in the downward direction (1) Remove the copper cap and rubber packing attached to the pip- method ing and flange of the distributor (gas) (optional). (2) Assemble outside the unit with the elbow (8), connecting pipe Taking out piping from the front direction (7 for 600 type), or connecting pipe (6 for types other than 600) (1) Remove the copper cap and rubber packing attached to the pip-...
10.6. How to install branch pipe For detail, please observe the instruction manual attached to the op- tional refrigerant branch kit. Joint C Pipe cutter D or E Deformed joint • When the number of pipes to be connected is smaller than the number of header branches, install a cap to the unconnected branches.
10.7. Airtight test and evacuation 1 Airtight test Airtight test should be made by pressurizing nitrogen gas to 3.0 MPa. For the test method, refer to the following figure. (Make a test with the ball valve closed. Be also sure to pressurize both liquid pipe and gas pipe.) The test result can be judged good if the pressure has not bee reduced after leaving for about one day after completion of nitrogen gas pressuriza- tion.
10.8. Thermal insulation of refrigerant Glass fiber + Steel wire Heat insulation Adhesive + Heat - resistant polyethylene foam + piping material A Adhesive tape Indoor Vinyl tape Be sure to give insulation work to refrigerant piping by covering liquid Outer Floor exposed Water-proof hemp cloth + Bronze asphalt pipe and gas pipe separately with enough thickness heat-resistant...
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Penetrations Inner wall (concealed) Outer wall Outer wall (exposed) Floor (fireproofing) Roof pipe shaft Penetrating portion on fire limit and boundary wall A Sleeve I Mortar or other incombustible caulking B Heat insulating material J Incombustible heat insulation material C Lagging When filling a gap with mortar, cover the penetration part with steel plate D Caulking material so that the insulation material will not be caved in.
11. Electrical work 11.1. Caution 1 Follow ordinance of your governmental organization for technical standard related to electrical equipment, wiring regulations and guidance of each electric power company. Warning: Be sure to have authorized electric engineers do electric work using special circuits in accordance with regulations and this installation manual.
11.2. Control box and connecting posi- 3. Connect indoor and outdoor units through the terminal block for trans- mission lines (TB3). Outdoor units and connections to central control tion of wiring systems go through the terminal block for centralized control (TB7). When making an indoor/outdoor connection with shielded wiring, con- nect the shield ground to the earth screw ( ).
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2. The control box cover is removed by removing the 2 screws and pull- 4. Piping connection ing downward. (The control box with the cover removed is shown in Connect indoor unit crossover cables of the transmission cables ter- the figure below.) minal block (TB3) of the variable capacity unit to the transmission cables terminal block (TB3).
11.3. Wiring transmission cables Wiring method, address setting method and permissible wiring length differ according to and whether or not you are using transmission booster. Check permissible wiring length before wiring. A may be required depending on the number of indoor units. Item 4 “Wiring examples”...
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A. Example of the use of the shielded cable in a single coolant system (Setting of addresses is necessary) Example of control line wiring Wiring method, address setting a. Run the wire to terminals M1 and M2 the variable capacity unit (OC) 1) Standard transmission line terminal block (TB3) and to terminals M1 and M2 on the constant capacity unit (OS) transmission line terminal block (TB3)
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Permissible length Prohibited items Length of the wire to the most remote indoor unit in the system (1.25 mm 200 m Remote control wire length 1 In the case of 0.5 - 0.75 mm wire, 10 m 2 If the length exceeds 10 m, use 1.25 mm wire and let the length be within the length of the wire to...
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B. Example of the use of the shielded cable in a system with group operation among multiple outdoor units (Setting of addresses is necessary) Group 1 Group 3 Group 5 CN40 (54) (51) (01) (04) (05) (06) TB13 TB13 TB13 TB13 M1 M2 S M1 M2...
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• Length of wire to the most remote unit via the outdoor unit : L 500 m (1.25 mm • Length of wire to the most remote unit via the indoor system : L 200 m (1.25 mm Remote control wire length : r •...
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C. Example of a system using the transmission booster (Combination of systems A - C) Ground A B S A B S TB13 TB13 TB13 TB13 M1 M2 S M1 M2 M1M2 S 1 2 3 M1M2 S 1 2 3 M1M2 S 1 2 3 M1M2 S...
11.4. Wiring of main power supply and equipment capacity Schematic drawing of wiring (example) Note: 1. The transmission booster may be required according to the number of indoor units connected. (For details, see item 11.3. “Wiring transmission cables”) 2. For switch capacity, see the installation manual for transmission booster. A Power supply (3-phase, 4-wire) 380/400/415 volt E Power supply (single-phase) 220/230/240 volt B Switch...
12. Test run 12.1. Checking before getting test run 1 Check to see whether there are refrigerant leakage, and slack of power or transmission cable. Confirm that 500 V megger shows 1.0 M or more between power supply terminal block and ground. Do not operate in the case of 1.0 M or less. NOTE: Never carry out megohm check over terminal control board.
12.3. How to cope with test run abnormality WT02979X01.pdf WT02979X01.pdf 1 A 4-digit check code is displayed on remote controller display panel if unit is stopped due to an abnormality. Check to see causes of that abnormality. 1. Indoor unit Check code Abnormality Check code...
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3. Remote controller Check code Abnormality Check code Abnormality 6101 Unreadable response receiving error 6606 Transmission and reception error (Communication trou- 6600 Duplicated unit address setting ble with transmission processor) 6602 Transmission error (Transmission processor hardware 6607 Transmission and reception error (No ACK error) error) 6608 Transmission and reception error (No responsive frame...
Displaying the service LED Service LED (LD1) • Error code display Alternate display of error generating address and error code Example At outdoor unit address 51, abnormal discharge temperature (Code 1102) • Flag display Example SV1 ON under only compressor 1 operated ABCDEFGH A Flag 1 E Flag 5...
12.5. The following phenomena do not represent abnormality (emergency) Phenomenon Display of remote controller Cause Indoor unit does not the perform cool- “Cooling (heating)” flashes When another indoor unit is performing the heating (cooling) opera- ing (heating) operation. tion, the cooling (heating) operation is not performed. The auto vane runs freely.
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!"#$ !"# !"#$%& '(#$)*. !"#$% !"#$ %&' !"#$%& ABCDEFGH !"#$% ON/OFF – CENTRALLY CONTROLLED 1Hr. ON OFF ˚C CHECK CLOCK FILTER ˚C CHECK MODE STAND BY INDOOR UNIT ERROR CODE TEST RUN ADDRESS NO OA UNIT ADDRESS NO NOT AVAILABLE DEFROST CLOCK ON OFF...
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!"#$ !"# !"#$%& '(#$)*. !"#$% !"#$ %&' !"#$%& ABCDEFGH !"#$% ON/OFF – CENTRALLY CONTROLLED 1Hr. ON OFF ˚C CHECK CLOCK FILTER ˚C CHECK MODE STAND BY INDOOR UNIT ERROR CODE TEST RUN ADDRESS NO OA UNIT ADDRESS NO NOT AVAILABLE DEFROST CLOCK ON OFF...
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This product is designed and intended for use in the residential, commercial and light-industrial environment. Please be sure to put the contact address/telephone number on this manual before handing it to the customer. HEAD OFFICE MITSUBISHI DENKI BLDG MARUNOUCHI TOKYO 100-8310 TELEX J24532 CABLE MELCO TOKYO WT02922X02 Printed in Japan...