50VZ/PZ 38VZ/PZ+40PZ Vertical Air-Cooled Split-System Cooling Units and Heat Pumps Installation, operation and maintenance instructions 1
CONTENTS START-UP CHECKLIST ................................................................................................................................................................. 3 PHYSICAL DATA ............................................................................................................................................................................. 4 ELECTRICAL DATA ..................................................................................................................
START-UP CHECK LIST Start up date: ................................................................... Equipment sold by: ..................................................................................................................................... Contract No: ................................................. Installed by: .................................................................................................................................................. Contract No: .................
Table 1 - Physical data 50VZ (40PZ/38VZ) Nom. cooling capacity* kW Unit weight 50VZ 40PZ 38VZ kg Compressor Oil charge Oil type Refrigerant Refrigerant charge** l 025 030 031 040 045 055 065 075 22.74 29.75 27.80 35.05 45.21 53.90 63.89 74.35 230 78 152 390 140 250 402 150 252 410 150 260 618 230 388 842 297 545 894 317 577 943 335 608 1033 365 668 3.9 1.8 x 2 Scroll 4x2 4x2 Mobil EAL Arctic 22CC 4x2 4x2 6.6 x 2 Maneurop 160SZ 7.43 Hermetic reciprocating 1.8 3.
Table 2 - Electrical data 50VZ (40PZ/38VZ) 015 025 030 031 040 045 055 065 075 Nominal voltage ±10%* V 230 400 230 400 230 400 230 400 230 400 230 400 230 400 230 400 230 400 Nominal power input** kW 7.3 7.3 11.1 11.1 14.0 14.0 14.6 14.6 18.1 18.1 21.4 21.4 25.4 25.4 30.0 30.0 37.6 37.6 Nominal current drawn** A 23.8 13.8 33.1 19.1 39.4 22.8 44.9 26.0 52.6 30.4 64.9 37.5 74.3 43.0 87.8 50.8 122.1 67.1 Effective power input kW 6.8 6.
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Fig. 8 - Service area, mm 50VZ/PZ 38VZ/PZ 40PZ * ** Service space behind the unit depends on whether or not the unit is installed with outdoor air ducts. It is also necessary to leave space for cleaning and inspection of the outdoor heat exchanger. Space for removal of the air filter and the indoor or outdoor section belt and pulley transmission is required on the right and left hand side.
Fig. 9 - Centre of gravity, mm (approx.) 50VZ/PZ (all sizes) 1 50VZ/PZ 015 025 030 031 040 045 055 065 075 XG YG ZG 381 583 526 627 772 434 639 758 448 723 743 444 858 703 450 1116 755 525 1122 773 527 1324 767 521 1359 781 527 Measured from point Fig. 10 - Centre of gravity, mm (approx.
Fig. 12 - Weight distribution, kg (approx.) 50VZ/PZ (all sizes) Support points Support points Control box 50VZ 015 025 030 031 040 045 055 065 075 45 81 37 67 70 106 84 130 68 127 72 135 106 125 82 97 164 178 132 144 178 267 158 239 190 281 171 252 215 276 198 254 235 302 217 279 50PZ 015 025 030 031 040 045 055 065 075 47 83 39 69 72 109 86 133 70 130 74 138 110 129 87 101 169 183 137 149 184 272 164 244 196 287 178 258 221 282 205 260 241 308 224 285 Fig.
Indoor air discharge (50VZ/PZ) Indoor air discharge (40PZ) The 50VZ/PZ units leave the factory with the indoor unit air discharge set to vertical, as indicated in the dimensional figures. It can be changed to horizontal discharge by following the steps below: The 40PZ units leave the factory with the air discharge set to horizontal, as indicated in the dimensional figures.
Fig. 15 - Repositioning unit air discharge (50VZ/PZ 025, 030, 031, 040 40PZ 025, 030, 031, 040) Front view Side view (vertical discharge) Rear view Side view (horizontal discharge) Legend Side access panel Rear discharge panel Top panel Angle iron attached to the base U-bracket Blanking plate Fan supply air ducts Drive belt(s) Fan pulley Fig.
Fan performance Power input, kW Available static pressure, Pa 50VZ/PZ 015 outdoor fan (38VZ/PZ 015) standard transmission Air flow, l/s Indoor fan Outdoor fan Pulley open Standard r/s Superior r/s 0 1 2 3 4 5 Factory Closed 1 2 3 4 5 3.5 19.6 18.75 18.33 17.67 17 16.33 17.33 23.08 22.18 21.28 20.38 19.5 18.
Fan performance Air flow, l/s Air flow, l/s Air flow, l/s Power input, kW Available static pressure, Pa 50VZ/PZ 025 outdoor fan (38PV/PZ 025) optional larger transmission Power input, kW Available static pressure, Pa 50VZ/PZ 025 outdoor fan (38VZ/PZ 025) standard transmission Indoor fan Power input, kW Power input, kW Available static pressure, Pa Available static pressure, Pa 50VZ/PZ 025 indoor fan (40PZ 025) optional larger transmission 50VZ/PZ 025 indoor fan (40PZ 025) standard transmissi
Fan performance Air flow, l/s Air flow, l/s Air flow, l/s Power input, kW Available static pressure, Pa Air flow, l/s Outdoor fan Curve Pulley open Standard r/s Superior r/s Standard r/s Superior r/s 0 1 2 3 4 5 Factory Closed 1 2 3 4 5 2.5/2* 19.33 18.5 17.66 16.92 15.83 14.92 17.29 21.76 20.76 19.76 18.76 17.76 16.76 18.2 17.36 16.53 15.7 14.86 14.03 16.53 20.5 19.58 18.66 17.75 16.83 15.
Fan performance Air flow, l/s Air flow, l/s Air flow, l/s Power input, kW Available static pressure, Pa 50VZ/PZ 040 outdoor fan (38PV/PZ 040) optional larger transmission Power input, kW Available static pressure, Pa 50VZ/PZ 040 outdoor fan (38VZ/PZ 040) standard transmission Indoor fan Power input, kW Power input, kW Available static pressure, Pa Available static pressure, Pa 50VZ/PZ 040 indoor fan (40PZ 040) optional larger transmission 50VZ/PZ 040 indoor fan (40PZ 040) standard transmissi
Fan performance Air flow, l/s Air flow, l/s Air flow, l/s Power input, kW Available static pressure, Pa Air flow, l/s Outdoor fan Curve Pulley open Standard r/s Superior r/s Standard r/s Superior r/s 0 1 2 3 4 5 Factory Closed 1 2 3 4 5 3/3* 19.5 18.66 17.92 17.16 16.42 15.66 17.16 21.33 20.58 19.83 19.08 18.33 17.58 12.25 11.75 11.25 10.75 10.25 9.75 10.75 12.83 12.33 11.83 11.33 10.83 10.
Fan performance Air flow, l/s Air flow, l/s Air flow, l/s Power input, kW Available static pressure, Pa 50VZ/PZ 055 outdoor fan (38PV/PZ 055) optional larger transmission Power input, kW Available static pressure, Pa 50VZ/PZ 055 outdoor fan (38VZ/PZ 055) standard transmission Indoor fan Power input, kW Power input, kW Available static pressure, Pa Available static pressure, Pa 50VZ/PZ 055 indoor fan (40PZ 055) optional larger transmission 50VZ/PZ 055 indoor fan (40PZ 055) standard transmissi
Fan performance Air flow, l/s Air flow, l/s Air flow, l/s Power input, kW Available static pressure, Pa Air flow, l/s Outdoor fan Curve Pulley open Standard r/s Superior r/s Standard r/s Superior r/s 0 1 2 3 4 5 Factory Closed 1 2 3 4 5 3.5/2* 21.5 20.66 19.83 19 18.16 17.33 18.58 22.66 21.9 21.13 20.36 19.6 18.83 12.75 12.25 11.75 11.25 10.83 10.42 11.75 14.33 13.83 13.33 12.73 12.33 11.
Fan performance Air flow, l/s Air flow, l/s Air flow, l/s Power input, kW Available static pressure, Pa 50VZ/PZ 075 outdoor fan (38PV/PZ 075) optional larger transmission Power input, kW Available static pressure, Pa 50VZ/PZ 075 outdoor fan (38VZ/PZ 075) standard transmission Indoor fan Power input, kW Power input, kW Available static pressure, Pa Available static pressure, Pa 50VZ/PZ 075 indoor fan (40PZ 075) optional larger transmission 50VZ/PZ 075 indoor fan (40PZ 075) standard transmissi
SAFETY CONSIDERATIONS - Installation and servicing of air conditioning equipment can be hazardous due to system pressure and electrical components. - Only trained and qualified service personnel should install, start-up or service air conditioning equipment. Untrained personnel can perform the basic maintenance functions of cleaning and replacing filters. All other operations should be performed by trained service personnel.
Fig. 18 - Rigging (38VZ/PZ) Ductwork (indoor air discharge) The ductwork dimensions should be determined in accordance with the air flow to be carried, and the available static pressure of the unit. The different air flows and static pressures which each unit can supply, are shown in the fan performance tables.
Fig. 21 - Horizontal drain (40PZ) Example: Drain pipe OD 25 mm Nominal supply: 400-3-50 Drain pan Unit base Field-supplied AB = 404 V BC = 399 V AC = 394 V Average voltage = 404 + 399 + 394 3 = 399 = 400 V Determine maximum deviation from average voltage: Electrical connections AB = 404 - 400 = 4 BC = 400 - 399 = 1 AC = 400 - 394 = 6 WARNING: To prevent electrical shock or equipment damage, make sure disconnects are open before electrical connections are made.
NOTE 1: This control is compatible with any kind of electromechanical or electronic control (without anticipation resistors) with the following features: Voltage at 24 V AC 50VZ units standard connections: R Connection to 24 V L Protection device indication C Common 24 V G Ventilation Y1 First stage cooling Y2 Second stage cooling W1 First stage heating (option) W2 Second stage heating (option) Refrigerant line selection General When designing refrigerant lines the following must be kept in mind: - Depend
Fig. 25 - Discharge line SP For both option A (Figure 22) and option B (Figure 23) the following conditions should be observed: The maximum speed permitted in any line is 15 m/s. Suction line must be insulated and have a 2% slope towards the compressor and the horizontal pipe run. In long pipe runs it may be necessary to adjust the oil charge. If the liquid line flow is downward, it is necessary to install pressure equalizer for heights above 10 m.
- Check the drain connections. Ensure that there are no refrigerant leaks. Confirm that the electrical power source agrees with the unit nameplate rating. Make sure that compressors float freely on the mounting springs. WARNING: The compressors are mounted on vibration isolators. Do not loosen or remove the support mounting bolts. - Check for proper fan rotation. Refrigerant charge Gas tightness testing and dehydration 50VZ/PZ units are shipped fully charged with refrigerant R-407C ready for operation.
- Remove the gas from the refrigerant circuit using recovery equipment to avoid harming the atmosphere. Electrically disconnect the compressor. Unbraze or unscrew the suction and discharge lines, taking care not to damage the rest of the components. Remove the fastenings from the compressor. Replace the compressor, ensuring that it contains sufficient oil. Braze or screw in the lines. Connect the compressor according to the wiring diagram. Evacuate the compressor.
Installation The standard installation of the water heating coil is made by positioning the connection manifolds on the same side as the motor of the evaporator unit. If necessary, it can be connected to the opposite side. In this case the coil must be turned by 180°. The installation sequence is as follows: a. Disconnect the power supply to the unit. b. Remove the side access panels. c.
GENERAL MAINTENANCE SERVICE ATTENTION: Before starting any servicing or maintenance operation on the unit, make sure that the power supply has been disconnected. A current discharge could cause personal injury. Indoor fan air adjustment In order to obtain maximum performance from the unit special attention should be paid to the following points: Electrical connections: The supply voltage should be ±10% of the nominal voltage limits.
Fig. 29 - To align fan and motor pulleys Transformation to split system (50VZ/PZ units) All units can be changed from a packaged to a split system, as described below: - - 1 2 3 4 5 6 7 Fixed flange Setscrews Movable flange Straight-edge must be parallel with belt Motor and fan shafts must be parallel Pulleys Motor and fan shafts must be parallel - Lubrication - Both the motors and the fans have factory lubricated and sealed bearings, and need no further lubrication.
TROUBLESHOOTING CHART A list of possible faults, as well as the probable cause and suggested solutions is shown in Table 12. In the event of a unit malfunction it is recommended to disconnect the power supply and ascertain the cause.
