30GH/GZ 009-035 Air-Cooled Liquid Chillers 50 Hz Installation, Operation and Maintenance Instructions 1
CONTENTS Page Start-up checklist .......................................................................................................................................................................... 3 Dimensions/clearances (standard unit) ....................................................................................................................................... 4 Dimensions/clearances (unit with optional Hydroflow kit) .........................................................................
START-UP CHECK LIST Start-up date: Equipment sold by: Contract No.: Installed by: Contract No.: Site address: Start-up date: Equipment type and serial number: 30GH/GZ Electrical data: Supply voltage: Ph. Nominal voltage: V Current draw: Ph. 1 V Ph. 2 V Ph. 3 V A Ph. 3 A % network voltage: Control circuit voltage A Ph.
Dimensions and clearances (standard unit) 30GH/GZ A B C D E F G 009-013 015-025 030-035 1160 1720 2060 1220 1160 1370 1060 1112 1231 1200 1200 1200 1000 1000 1000 1000 1000 1000 1000 1000 1200 Legend: All dimensions are given in mm. Required service clearance 30GH and 30GZ 009-013 Do not obstruct Power supply Water inlet Water outlet Note: Certified drawings are available on request.
30GH and 30GZ 030-035 Do not obstruct Floor mounting • • For unit mounting holes, weight distribution and centre of gravity coordinates, refer to the dimensional drawings. These units are designed for outdoor installation. CAUTION: • • • Ensure the air flow around the unit is not obstructed. If several units are installed, next to each other, ensure that the space in between the units is the same as the unit depth. There must not be any roof or cover above the unit.
Dimensions and clearances (unit with optional Hydroflow kit) CAUTION: ONLY PRO-DIALOG UNITS CAN BE EQUIPPED WITH THE OPTIONAL HYDROFLOW KIT. 30GH/GZ A B C D E F G 009-013 015-025 030-035 1160 1720 2150 1310 1246 1370 1781 1833 2052 1200 1200 1200 1000 1000 1000 1000 1000 1000 1000 1000 1200 Legend: Required service clearance All dimensions are given in mm. Power supply Water inlet Water outlet 30GH and 30GZ 009-013 Note: Certified drawings are available on request.
30GH and 30GZ 030-035 Floor mounting • • For unit mounting holes, weight distribution and centre of gravity coordinates, refer to the dimensional drawings. These units are designed for outdoor installation. CAUTION: • • • Ensure the air flow around the unit is not obstructed. If several units are installed, next to each other, ensure that the space in between the units is the same as the unit depth. There must not be any roof or cover above the unit.
Physical data Size 009 013 015 020 025 030 035 31.6 32.0 40.1 41.0 52.0 53.0 64.0 65.0 74.0 75.0 93.0 94.0 Net nominal cooling capacity 30GH* Net nominal cooling capacity 30GZ* kW kW 21.2 21.0 Operating weight kg 265 283 400 460 510 682 725 Refrigerant charge (R-22 - 30GH) Refrigerant charge (R-407C - 30GZ) kg kg 6.5 7.5 8.0 9.0 9.2 10.5 11.9 13.5 13.3 15.0 15.7 15.7 16.5 18.6 % 1 ... hermetic, 48.3 r/s 1 ... semi-hermetic, 4 or 6 cylinders, 24.
NOTES: • 30GH/GZ 009-035 units have a single power connection point. • A separate power source (230 V, 1 ph, 50 Hz) that does not exceed the main switch capacity is required to power the compressor crankcase heater circuit. This source must be supplied from a transformer. It must not be supplied from a phase + neutral supply (for ground + neutral systems).
APPLICATION DATA (STANDARD UNIT) NOTE: The compressor must not restart more than 10 times in an hour. Minimum evaporator water flow rates Min. flow rate, l/s 009 013 015 020 025 030 035 0.3 0.5 0.7 0.8 1.0 1.2 1.3 STANDARD 30GH 30GH WITH LOW TEMPERATURE OPTION 50 45 OUTDOOR AIR TEMPERATURE, °C 30GH/GZ 30GH Operating range If the flow rate is lower, follow the recommendations below: a. It is possible to install several chillers of lower capacity in series, each one supplying a part of the ∆T. b.
APPLICATION DATA (UNIT WITH OPTIONAL HYDRONIC KIT) Water flow rate 30GH/30GZ HYDROFLOW module option Maximum flow rate* Minimum flow rate l/s l/s 009 013 015 020 025 030 035 1.6 0.3 1.7 0.5 3.0 0.7 3.3 0.8 3.3 1.0 4.6 1.2 5.7 1.3 * Maximum water flow rate for an available static system pressure of zero.
Available static pressure for HYDROFLOW units (30GH/GZ 015-025) kPa m WG 150 15 140 14 130 13 120 12 110 11 100 10 90 9 8 70 7 60 6 50 5 3 20 2 10 1 0 0 020 4 30 5 02 40 5 01 80 5 10 15 1,39 2,78 4,17 20 m3/h. I/s.
INSTALLATION SAFETY CONSIDERATIONS Installation, start-up and servicing this equipment can be hazardous due to system pressures, electrical components and equipment location (roofs, elevated structures, etc.). Only trained, qualified installers and service mechanics should install, start-up and service this equipment. Untrained personnel can perform basic functions, such as cleaning coils. All other operations should be performed by trained service personnel.
Water connections Water-loop connections Make the water-side heat exchanger connections, using appropriate hardware capable of ensuring water-tightness of the threaded unions. Refer to the certified dimensional drawings for the sizes and positions of all water inlet and outlet connections. The water pipes must not transmit any radial or axial force to the heat exchangers or any vibration to the pipework or building.
Hydraulic diagram Power supply The power supply must conform to the specification on the chiller nameplate. The supply voltage must be within the range specified in the electrical data table. For connections refer to the wiring diagrams. WARNING: Operation of the chiller with an improper supply voltage or with excessive phase imbalance constitutes abuse which will invalidate the Carrier warranty.
• • • • • Check that oil is visible in each compressor sight glass to between 1/8 and 3/8 of the total glass depth (check for all compressors). Confirm that there are no refrigerant leaks. Confirm that the installation is correct and check the secure positioning of all control sensors. Confirm that discharge muffler securing bands and discharge line connections are tight. Check that all electrical connections are secure.
SERVICING REFRIGERATION COMPONENTS Servicing must be done by a qualified refrigeration engineer. WARNING: Before doing any work on the machine ensure that the power is switched and locked off and that all isolators are tagged. If a refrigerant circuit is opened, it must be evacuated, and recharged, after ensuring that the refrigerant is clean and free from impurities, the filter-drier has been changed and the unit has been tested for leaks.
• Significant undercharge (large bubbles in the sight glass, drop in suction pressure). Small units (charge below 20 kg per circuit). After detection and repair completely drain the refrigerant charge, using a refrigerant recovery unit, then recharge completely, following the precautions given above. Large units (charge above 20 kg per circuit).
Heat exchangers 3. Brazed plate heat exchanger (evaporator) Start with cleaning the joints to be soldered. Clean the inside of the connection on the plate heat exchanger and the outside of the pipe. Degrease the connections properly with some kind of solvent (e.g. Trichlorethylene). Centre the pipe in the connection. Initial cooling is achieved by keeping nitrogen flowing through the heat exchanger and by the wet cloth. The final cooling could be done with water.
Fan motor replacement a) 30GH/GZ 009-013 units Fan motors can be removed through the top of the unit. Carefully follow the safety considerations and do not damage the propeller. Label the wires when they are removed. 30GH/GZ 009-013 unit fan 80 mm + 0 mm Filter-drier The filter-drier keeps the circuit clean and free of moisture. The sight glass indicates when it is necessary to change the cartridge in the filter-drier.
TROUBLESHOOTING CHART Below we list a series of possible faults, along with the probable causes and suggested solutions. In the event of a unit malfunction, it is advisable to disconnect the power supply and ascertain the cause.
TROUBLESHOOTING CHART - HYDRAULIC KIT OPTION SYMPTOMS CAUSE REMEDY Pump will not start Isolator switch open Flow controller open Circuit breaker open Close isolator switch Check controller Trace and correct fault, reset circuit breaker Contactor stuck open Pump connections loose Replace contactor Check and tighten pump electrical terminals Control components poorly connected Low supply voltage Thermal sensor tripped Pump seized Check and tighten all connections Check voltage and correct Manually re
Order No. 13030-76, September 1997. Supersedes order No.: 13030-76, June 1996 Manufacturer reserves the right to change any product specifications without notice. 24 Manufactured by Carrier SA, Montluel, France Printed on Totally Chlorine-Free Paper.
