2005 Air-Conditioners For Building Application TECHNICAL & SERVICE MANUAL Series PEFY Ceiling Concealed Models PEFY-P15NMHU-E,PEFY-P18NMHU-E PEFY-P24NMHU-E,PEFY-P27NMHU-E PEFY-P30NMHU-E,PEFY-P36NMHU-E PEFY-P48NMHU-E,PEFY-P54NMHU-E PEFY-P72NMHU-E,PEFY-P96NMHU-E CONTENTS SAFETY PRECAUTIONS ·························1 1. FEATURES ···········································3 2. PART NAMES AND FUNCTIONS ········4 3. SPECIFICATION ···································6 4.
SAFETY PRECAUTIONS 1. Before installation and electric work s Before installing the unit, make sure you read all the “Safety precautions”. s The “Safety precautions” provide very important points regarding safety. Make sure you follow them. • • • s This equipment may cause the adverse effect on the same supply system. s Please report to or take consent by the supply authority before connection to the system.
2. Warning: • Note the following when building a heater in the air conditioning system. - Leave enough space between units for proper ventilation so that the indoor unit temperature does not exceed 40˚C when windless. - Keep the heater clean, and take appropriate measures so that the indoor unit does not suck in the dust particles that accumulate on the heater. - Use the optional heater cable (PAC-YU24HT) to perform an interlocked operation with indoor units.
1 FEATURES Series PEFY Ceiling Concealed Indoor unit Models 3 Cooling capacity/Heating capacity kW BTU / h PEFY-P15NMHU-E 4.4 / 5.0 15000 / 17000 PEFY-P18NMHU-E 5.3 / 5.9 18000 / 20000 PEFY-P24NMHU-E 7.0 / 7.9 24000 / 27000 PEFY-P27NMHU-E 7.9 / 8.8 27000 / 30000 PEFY-P30NMHU-E 8.8 / 10.0 30000 / 34000 PEFY-P36NMHU-E 10.6 / 11.7 36000 / 40000 PEFY-P48NMHU-E 14.1 / 15.8 48000 / 54000 PEFY-P54NMHU-E 15.8 / 17.6 54000 / 60000 PEFY-P72NMHU-E 21.1 / 23.
2 PART NAMES AND FUNCTIONS ● Indoor (Main) Unit Air outlet Air inlet ● Remote controller [PAR-21MAA] ● Once the controls are set, the same operation mode can be repeated by simply pressing the ON/OFF button. [Operation buttons] 1 TEMP.
[Display] A CENTRALLY CONTROLLED E ON ERROR CODE C NOT AVAILABLE TEMP. G 5 C C STAND BY DEFROST A B C D E F G H I J K L M N O P 1Hr. OFF CLOCK CHECK B P Current time/Timer Centralized control Timer OFF Timer indicator Operation mode: COOL, DRY, “Locked” indicator Set temperature Power ON Louver Ventilation Filter sign Set effective for 1 hr.
SPECIFICATION 3 3-1. Specification PEFY-P-NMHU-E Item Power sourse Model Cooling Capacity *1 Heating Height Dimension Width Depth Net weight Airflow rate (Low-High) External static pressure *3 FAN Noise level (Low-High) *2 Filter kW BTU/h kW BTU/h mm in mm in mm in kg lb m3/min cfm 208V Pa 230V 208V dB(A) 230V PEFY-P15NMHU-E PEFY-P18NMHU-E 4.4 15000 5.0 17000 5.3 18000 5.9 20000 PEFY-P24NMHU-E 208/230V, 60Hz 7.0 24000 7.9 27000 380 14-31/32 PEFY-P27NMHU-E PEFY-P30NMHU-E 7.9 27000 8.
3-2. Electrical parts specifications Model Symbol PEFYPEFYPEFYPEFYPEFY- PEFYPEFYPEFYPEFYPEFYP15 P18 P24 P27 P30 P36 P48 P54 P72 P96 NMHU-E NMHU-E NMHU-E NMHU-E NMHU-E NMHU-E NMHU-E NMHU-E NMHU-E NMHU-E Tranrsformer T (Primary) 50/60Hz 220-240V (Secondry) (23.5V 0.9A) Room temperature thermistor TH21 Resistance0˚C[32˚F]/15kΩ,10˚C[50˚F]/9.6kΩ,20˚C[68˚F]/6.3kΩ,25˚C[77˚F]/5.4kΩ, 30˚C[86˚F]/4.3kΩ,40˚C[104˚F]/3.0kΩ Liquid pipe thermistor TH22 Resistance0˚C[32˚F]/15kΩ,10˚C[50˚F]/9.6kΩ,20˚C[68˚F]/6.
D 50(1-31/32)x(G-1)=H C 2x6-ø3(1/8) 24(31/32) 10(13/32) Suspension bolt hole 4-14x30(9/16x1-3/16) Slot 340(13-13/32) PEFY-P36·48·54NMHU-E PEFY-P27·30NMHU-E PEFY-P24NMHU-E PEFY-P18NMHU-E B C D E F 1050 1004 930 850 800 (41-11/32) (39-17/32) (36-5/8) (33-1/2) (31-1/2) 1204 1130 1050 1000 1250 (49-7/32) (47-13/32) (44-1/2) (41-11/32) (39-3/8) 25 (1) 25 (1) 21 17 11 G 3Drain hose 75 ((2-31/32) ) 800 (31-1/2) 1000 (39-3/8) 500 (19-11/16) H 19 15 10 J L B(Suspension bolt pitch) A 2
50x21=1050(1-31/32x21=41-11/32) 50(1-31/32) 102 25 1250(49-7/32) 10(13/32) 2x8-ø3(1/8) 24(31/32) 10(13/32) Suspension bolt hole 4-14x30(9/16x3/16) Slot 420(16-9/16) (4-1/32)(1) Keep duct-work length 850mm(33-15/32 in.) or more.
1234 5 6 (Red) CN81 SW11 (1st digit) 901 2 3 654 21 21 TH21 TH22 TH23 21 NOTE 1 DS 3 1 CN31 (White) CN31 21 3 654321 1 2 A connector is attached to the drain lift up mechanism, which is an optional part. NOTE 1,2 A1 1 2 2 (Red) CN3T (White) CN60 LEV SYMBOL MF C I.B. A.B. TB2 TB5 TB15 F1 T LEV ZNR,ZNR1 SYMBOL NAME SYMBOL NAME Fan motor TH21 Drain sensor Capacitor (for MF) TH22 S.B. Surge absorber board LED1 Power supply (I.B.
11 123456 6 5 4 9 0 1 2 3 6 5 4 9 0 1 2 3 SW11 (1st digit) 8 7 SW7 SW4 SW3 SW2 SW12 (2nd digit) 8 7 SW5 (Red) CN81 (Red) CN42 LED2 TH21 21 TH22 21 TH23 21 (Red) (White) (Black) CN20 CN21 CN29 LED1 1 NOTE 1 DS 3 CN31 21 (White) CN31 (Red) 3 31 2 2 2 1 (White) CNT AC250V F1 6.3A T ( ) A 1 1 T 1 (Red) CN3T (Green) SYMBOL EXPLANATION SYMBOL SYMBOL NAME NAME MF Fan motor 52F Contactor (fan motor) I.B. Indoor controller board 51F Over current relay (fan motor) A.B.
6 REFRIGERANT SYSTEM DIAGRAM Gas pipe thermistor TH23 Gas pipe Liquid pipe thermistor TH22 Flared joints(Type 15~54) Brazed joints(Type 72·96) Heat exchanger Linear expansion valve Strainer (#100mesh) Strainer (#100mesh) Room temperature thermistor TH21 mm Capacity Item PEFY-P15NMHU-E PEFY-P18NMHU-E PEFY-P24,27,30NMHU-E ø 12.7 (1/2) R410A ø 15.88 (5/8) Gas pipe R22 ø 12.7 (1/2) ø 15.88 (5/8) ø 6.35 (1/4) R410A ø 9.52 (3/8) Liquid pipe R22 ø 6.35 (1/4) ø 9.52 (3/8) mm
7 TROUBLE SHOOTING 7-1. How to check the parts Parts name Check points Room temperature thermistor (TH21) Liquid pipe thermistor (TH22) Gas pipe thermistor (TH23) Disconnect the connector, then measure the resistance using a tester. (Sorrounding temperature 10°C~30°C[50°F~86°F]) Trans Disconnect the connector and measure the resistance using a tester.
7-2. Setting of address switch Make sure that power source is turning off.
7-3.
8 DISASSEMBLY PROCEDURE Be careful on removing heavy parts. 8-1. CONTROL BOX OPERATING PROCEDURE Models 15~54 1.Removing the control box cover (1) Remove the fixing screws (two) of the control box (A), and remove the cover. (Fig. 1) PHOTOS Fig.1 (A) *At this stage, the following servicing is possible. 1 Operation and check of the switches (listed below) which are on the control board.
Be careful on removing heavy parts. OPERATING PROCEDURE Models 72 · 96 1.Removing the control box cover (1) Remove the fixing screws (four) of the control box cover (C), and remove the cover. (Fig. 4) PHOTOS Fig.4 (C) *At this stage, the following servicing is possible.(Fig. 5) 1 Operation and check of the switches (listed below) which are on the control board.
Be careful on removing heavy parts. 8-2. FAN and FAN MOTOR OPERATING PROCEDURE Models 15~54 1.Removing the control box. (1) Remove the control box cover and terminal bed cover with procedure 8-1. (2) Remove the fan motor connectors. (3) Remove the fixing screws (two) of the control box and slide the control box to remove.(Fig. 1) (4) Move the control box to place that is not block operation. (Fig. 2) PHOTOS Fig.1 Fig.2 Control box Control box Fig.3 (A) (D) (E) 2.
Be careful on removing heavy parts. OPERATING PROCEDURE (4) Slide the motor (A) with motor base (D) in direction of allow 1. (Fig. 5) PHOTOS Fig.5 (A) (D) Arrow 1 Fig.6 Motor (A) Models 36·48·54 *Motor maintenance procedure is almost 15~30 models procedure. Models 36~54 have twin shaft motor.After removing the fan and fan case which are in front of motor,remove the motor. (1) Remove the bell mouse of the front fan motor with procedure models 15~54.
Be careful on removing heavy parts. OPERATING PROCEDURE Models 72 · 96 1.Removing the control box. (1) Remove the control box cover1 with procedure 8-1. (2) Remove the fixing screws (four) of the control cover 2, and remove the control cover2. (Fig. 7) (3) Remove the fan motor connectors. (4) Remove the fixing screws (three) of the control box and remove the control box (Fig. 8) (5) Move the control box to place that is not block operation. (Fig. 9) PHOTOS Control box cover 2 Fig.7 Fig.
Be careful on removing heavy parts. OPERATING PROCEDURE PHOTOS (3) After removing the fixing screws (H)(as shown models 36·48·54) of the front fan case(B) and remove the fan. Pull the fan case (B). Fig.11 (4) Remove the fixing screws (K)(three) of the bell mouse (J) attached fan case (L), and remove the bell mouse (J). (Fig.12) (5) Remove the fixing screws (four) of the motor base(D). (B) Notice: It's necessary using the driver over 30cm length to remove the fixing screws (a) .
8-3. LEV,THERMISTOR (Liquid/Gas piping temperature detection) Be careful on removing heavy parts. OPERATING PROCEDURE Models 15~54 1.Removing the LEV. (1) Remove the control box cover with procedure 8-1. (2) Remove the fixing screws (four) of the heat exchanger cover (A), and remove the cover (A).(Fig. 1) (3) Remove the LEV driving motor with a double spanner.(Fig. 2) PHOTOS Fig.1 (A) 2.Removing the thermistors. (1) Remove the thermistors from the thermistor holders which are installed on the piping.
Be careful on removing heavy parts. 8-4. HEAT EXCHANGER OPERATING PROCEDURE Models 15~54 1.Removing the heat exchanger. (1) Remove the heat exchanger cover with procedure 8-3-1. (2) Remove the bottom plate which is air outlet side.(fixing screws : ten) (Fig. 1) (3) Remove the drainpan.(Fig. 2) PHOTOS Fig.1 Bottom plate Fig.2 Drainpan Fig.
Be careful on removing heavy parts. OPERATING PROCEDURE (4) Remove the maintenance cover.(fixing screws : two) (Fig. 4) (5) Remove the heat exchanger.(fixing screws : four) (Fig. 3,5) PHOTOS Fig.4 *Removerd heat exchanger is as shown Fig.6 Maintenance cover Fixing screws Fig.5 Fixing screws Fig.
Be careful on removing heavy parts. OPERATING PROCEDURE Models 72 · 96 1.Removing the heat exchanger. (1) Remove the refrigerant piping and drain hose from main unit.(Be care that water is not leaking from drain hose. ) (2) Remove the power supply wire and the transmission line. (Make sure that power source is turning off. ) (3) Pull down the main unit. (4) Turn over the main unit upside the bottom plate (5) Remove the bottom plate which is air outlet side.(fixing screws : fifteen) (Fig.
Be careful on removing heavy parts. OPERATING PROCEDURE (7) Remove the fixing screws (three) of the heat exchanger cover, and remove the cover. Remove the fixing screws (four) of the maintenance cover, and remove the cover. (Fig. 10) (7) Remove the heat exchanger. Fixing screws(non-piping side) : two (Fig. 9) Fixing screws(piping side) : two (Fig. 11) PHOTOS Fig.10 (A) Fixing screws *Removerd heat exchanger is as shown Fig.12 Maintenance cover Fixing screws Fig.11 Fixing screws Fig.
8-5.
8-6.
Issued in Aug. 2005 HWE05120 New publication, effective Aug.
3400 Lawrenceville Suwanee Road ● Suwanee, Georgia 30024 Toll Free: 800-433-4822 ● Toll Free Fax: 800-889-9904 www.mrslim.com Specifications are subject to change without notice.
