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MACH Heat Pump Air-Cooled Chiller

Heat Pump Air-Cooled Chillers for Global Residential

and Light Commercial Microclimates

Содержание MACH-060-1

Страница 1: ...MACH Heat Pump Air Cooled Chiller Heat Pump Air Cooled Chillers for Global Residential and Light Commercial Microclimates ...

Страница 2: ...MACH 060 1 1 208 230 1 50 60 MACH NOMENCLATURE BREAKDOWN Voltage Air Cooled Chiller 060 60 0000 BTUH 1 MACH 060 1 Available Model Numbers ...

Страница 3: ... General 1 Factory assembled air cooled heat pump chiller 2 Shall be assembled on heavy gauge steel mounting lifting rails 3 Contained within the unit cabinet shall be all factory wiring piping controls refrigerant charge R 407c and special requirements prior to field start up 4 Brass body strainer with 20 mesh screen and blow down shall be supplied in cabinet as a field installable accessory B Un...

Страница 4: ...5 Optional fan cycling control for low ambient operation 6 Flow switch 7 Defrost printed circuit board and thermostat 8 Leaving water temperature thermostat with thermistors installed to measure cooler leaving water flow 9 Manual heat cool changeover switch B Unit controls shall include the following functions 1 Capacity control based on leaving chilled fluid temperature Temperature setpoint accur...

Страница 5: ... power supply shall enter the unit at a single point B Electrical power supply shall be rated to withstand 120 F operating ambient temperature C Unit shall be available in 208 230 01 50 60 D Control points shall be accessed through a terminal block 4 ...

Страница 6: ...nent replacement Routine maintenance and service is to be performed by qualified personnel only These specifications are subject to change without notice Electrical Data Compressor Condenser Fan Motor 2 qty Pump Motor Fuse or HACR Circuit Breaker Per Circuit Model Number Volts Phase Hertz RLA LRA FLA RPM FLA RPM Minimum Amps Maximum Amps MACH060 01 208 230 1 50 60 32 1 169 1 05 1050 3 70 3450 45 9...

Страница 7: ...o the Glycol Solution Data table above Ensure the system circulating pump is in a constant energized mode to keep a continuous circulation of liquid solution The Multiaqua chiller is a self contained air cooled condenser coupled with an insulated brazed plate heat exchanger evaporator The system utilizes a scroll compressor to circulate refrigerant between the condenser and heat exchanger The refr...

Страница 8: ...6 93 6 63 6 34 6 24 6 14 60 7 72 7 43 7 23 7 03 6 93 TONS GPM TONS GPM TONS GPM TONS GPM TONS GPM 35 3 82 3 63 3 53 3 43 3 43 40 4 41 4 21 4 12 4 02 4 02 42 4 70 4 51 4 41 4 21 4 31 44 5 00 4 80 4 70 4 61 4 61 45 5 19 5 00 4 90 4 70 4 70 46 5 29 5 10 5 00 4 90 4 90 48 5 68 5 49 5 29 5 19 5 19 50 5 98 5 78 5 59 5 49 5 49 55 6 86 6 57 6 27 6 17 6 08 60 7 64 7 35 7 15 6 96 6 86 7 These specifications...

Страница 9: ... 79 6 50 6 21 6 11 6 01 60 7 57 7 28 7 08 6 89 6 79 TONS GPM TONS GPM TONS GPM TONS GPM TONS GPM 35 3 74 3 55 3 46 3 36 3 36 40 4 32 4 13 4 03 3 94 3 94 42 4 61 4 42 4 32 4 13 4 22 44 4 90 4 70 4 61 4 51 4 51 45 5 09 4 90 4 80 4 61 4 61 46 5 18 4 99 4 90 4 80 4 80 48 5 57 5 38 5 18 5 09 5 09 50 5 86 5 66 5 47 5 38 5 38 55 6 72 6 43 6 14 6 05 5 95 60 7 49 7 20 7 01 6 82 6 72 82 ENTERING AIR TEMPERA...

Страница 10: ...M TONS GPM TONS GPM 130 3 06 12 3 53 12 4 08 12 4 60 12 5 11 12 Based on compressor data MACH060 CAPACITIES with 50 Glycol LWT F ENTERING AIR TEMPERATURE F 17 35 45 55 65 LWT F ENTERING AIR TEMPERATURE F 17 35 45 55 65 MACH060 CAPACITIES with 10 Glycol ENTERING AIR TEMPERATURE F 45 MACH060 CAPACITIES with 30 Glycol 55 65 65 MACH060 Heating Performance Data MACH060 CAPACITIES with 0 Glycol ENTERING...

Страница 11: ...MACH060 Heat Pump Chiller Pump Curve Pump Model Numbers 0 5 Horsepower 10 SSP 2 208 230 460 3 50 60 SSP 1 208 230 1 50 60 ...

Страница 12: ...11 ...

Страница 13: ...uence of Operation 21 Refrigeration System Operation 23 Description of Refrigeration Components 24 Piping System Components 25 Layout Design 26 Banked Chiller Configuration 27 Installation Notes 28 Propylene Glycol Content 29 Expansion Tank 29 Filling the System with Propylene Glycol 30 Air Elimination 30 Liquid Solution Balancing 31 Wiring Diagrams 32 Table of Contents 12 ...

Страница 14: ...tion on ferrous and copper piping systems which will vary from the composite pipe system outlined in this manual Composite pipe is the recommended pipe for Multiaqua Chiller System installations however existing piping systems can be adapted to the system The following sections will describe each component and how it functions within the system Installation information is supplied where appropriat...

Страница 15: ... solution water and Propylene Glycol mix The solution temperature is controlled by the liquid solution temperature control DTC which is factory set at 120 44 F The liquid solution is circulated through the heat exchanger by an internal stainless steel pump which is protected with Silicon Carbide Viton Seals to the system supply piping and to the airside fan coil s The Pump will not self prime A fu...

Страница 16: ...ty the system supplies the necessary amount of capacity to the spaces or zones on an as needed basis instead of producing a larger capacity 100 of the time To clarify this concept we will adapt the above information to a basic Multiaqua System Utilizing diversity and a MACH 060 five 5 ton reverse cycle chiller we can supply chilled liquid solution to six 6 MHWW 12 1 ton fan coils Three 3 of which ...

Страница 17: ...ices may adversely affect the operation of the chiller and may also endanger life and property The manufacturer disclaims any responsibility for such loss or injury resulting from the use of such unauthorized components accessories or devices Upon receiving the chiller and components inspect for any shipping damage Claims for damage either apparent or concealed should be filed immediately with the...

Страница 18: ...er No ductwork can be connected to the chiller s condenser or condenser fans If a concrete slab is used do not connect the slab directly to any building s foundation or structure to prevent sound transmission Locate the slab on a level surface that is above grade to prevent ground water from entering the chiller cabinet Regular cleaning of the cabinet air filters will be necessary The filters clea...

Страница 19: ...open the timer delays by opening its contact for 5 minutes before resetting to the closed position the low and high pressure switches Should the flow switch open the timer can only be reset by opening and closing the chiller s line voltage disconnect Refrigerant System Timer The refrigerant timer is a 24 vac 5 minute delay Description of Electrical Controls High Pressure Switch The high pressure s...

Страница 20: ...ntinued Low Pressure Switch through the two or three normally open contacts The contactor coil operates closes the contacts when energized by 24 vac open contact The pump relay coil operates closes the contact when energized flow deflects the paddle closing the switch The flow switch is position sensitive The arrow on the switch must point in the direction of liquid solution flow Compressor Contac...

Страница 21: ...rinted circuit board with on board relays to control the outdoor fan and reversing valve It uses the input of coil mounted and outdoor air sensors to determine when defrost is needed 20 line A liquid crystal display continually indicates liquid solution temperature The control is mounted inside the chiller cabinet Liquid Solution Temperature ControlThe liquid solution temperature control is an adj...

Страница 22: ...perature controller DTC is calling for cooling the control circuit is routed through the short cycle timer the three safety switches the flow low and high pressure switches and through the RancoTM DDL defrost control to the compressor contractor In heating the same sequence is followed with the exception the 24 volt signal for compressor operation is passed to and through the defrost control board...

Страница 23: ...ference Additionally a defrost will be initiated if six hours of accumulated compressor run time has elapsed without defrost and the outdoor coil temperature below 35 F Defrost Termination Once defrost is initiated the defrost will continue until fourteen minutes has elapsed or the coil temperature has reached the terminate temperature The terminate temperature is factory set at 70 F although the ...

Страница 24: ...g potential defrost or refrigerant problems See the electrical Controls Sequence of Operation for a defrost board testing Refrigeration System Operation The refrigeration system is a closed loop consisting of a compressor liquid solution side heat exchanger evaporator in cooling condenser in heating airside outdoor coil evaporator in heating and condenser on cooling with combination Thermostatic E...

Страница 25: ...or coil during low ambient conditions Description of Refrigerant Components 24 Brazed Plate Heat Exchanger The Heat Exchanger or evaporator is of a Multiaqua units feature Scroll performance at a low sound level over a wide Scroll Compressor Scroll technology ensures reliable high efficiency All Bi Directional Expansion Check Valve Multiaqua heat pump chillers are equipped with Thermostatic Expans...

Страница 26: ...cts as a reservoir for chilled liquid solution with less than 25 gallons of liquid solution The tank prevents rapid cycling of the WX422H 42 Gallon Description Of Refrigerant Components Continued D146M1040 1 1 4 25 Part Number 1500 1 Part Number D146M1032 3 4 Part Number WX202H 20 Gallon The air scoop eliminates air entrained in the liquid solution Liquid Solution Bypass Valve The liquid solution ...

Страница 27: ...iver a flow rate measured in gallons per minute GPM The pump must be able to overcome the resistance to flow pressure drop imposed by the chiller components piping system and air handlers while maintain the necessary flow rates in gallons per minute Pump capacities in gallons per minute and pressure drop feet of head are listed in table 1 26 VT3212G13A020 1 2 3 Way Zone Valve VT3212G13A020 3 4 3 W...

Страница 28: ...ssure Max Flow rate Min Flow Rate Supply Water Temp C Return Water Temp H Min Solution Content Expansion Tank Size Pump Water Connections Internal Pressure Loss Table 1 Piping resistance or pressure drop is measured in feet of head A foot of head is the amount of pressure drop imposed in lifting liquid solution one foot Pumps in the Multiaqua system are designed to move rated liquid solution flow ...

Страница 29: ...d liquid solution lines In the event air handlers valves should shut down the bypass valve is set to open up and bypass liquid solution between the supply and return lines relieving pressure and eliminating the possibility of pump cavitations To adjust the valve run the system wi one air handler solenoid actuated De energize the solenoid valve at this point no liquid solution will be flowing throu...

Страница 30: ...d solution illustration above As the liquid solution heats up the bladder will be pushed further away from the tank walls allowing for expansion and contracting as the liquid solution temperature changes By flexing the bladder controls the system pressure adjusting to temperature variations of the chilled liquid solution system It is critical that the expansion tank s air bladder pressure be less ...

Страница 31: ... After adding Propylene Glycol fill the system with enough liquid solution to bring system pressure to approximately 15 psi gauge pressure To measure system pressure shut off the stopcock and attach a water pressure gauge Open the stopcock to read system pressure Since we have the system filled we must eliminate the air left in the system Briefly open each bleed valve a the air handlers and allow ...

Страница 32: ...ure has lowered to the set point begin the balancing process The system must be free of air and each air handler set at a temperature low enough to continue cooling operation and liquid solution flow during the balancing process Begin by measuring the return line chilled liquid solution temperature of each air handler Begin incrementally closing supply line balance valve at the air handlers with t...

Страница 33: ...32 MACH060 01 Wiring Diagram 208 230 1 50 60 ...

Страница 34: ...33 MACH060 01 with Low Ambient Kit Wiring Diagram 208 230 1 50 60 ...

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