Emerson PFH020A-L User Manual Download

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System Performance Microprocessor Controls

Liebert

Mini-Mate2

™

7.0

YSTEM

ERFORMANCE

ICROPROCESSOR

ONTROLS

This section provides a detailed description of how the Liebert Mini-Mate2 responds to operator

inputs and room conditions.

7.1

Temperature Control

7.1.1 Cooling/Heating Required

The temperature control program for the microprocessor is based on a calculated percentage

requirement for cooling/heating.

7.1.2 Cooling Operation (Cooling, Compressorized Direct Expansion and Chilled Water)

Cooling is ACTIVATED when the temperature control calculates a requirement for cooling of 100%. It

is DEACTIVATED when the cooling requirement drops below 50%. The optional hot gas bypass is

energized when a call for cooling occurs unless there is also a call for dehumidification.

7.1.3 Heating Operation

Electric Heat or Hot Water

The reheat stage is ACTIVATED when the temperature control calculates a requirement of 100%.

The reheat is DEACTIVATED when the heat requirement is 50% less than the activation point.

Ground Current Detector (GCD)

A Ground Current Detector is factory-installed on all 1-ton through 3-ton Liebert Mini-Mate2 units

with reheat. The GCD detects reheat leakage current and shuts down operation of the reheat. A

steady green LED indicates that the reheat is operating properly. A red LED indicates that the reheat

has failed and both the reheat element and GCD need to be replaced.

Figure 30 Ground current detector

Table 23

Cooling and dehumidification load response of hot gas bypass

Situation

Response

Cooling only

Dehumidification only

OFF

Cooling with Dehumidification

OFF

WARNING

Risk of heater element failure, smoke and fire. Can cause building and equipment damage,

injury or death
Do not remove or disable the ground current detector.

Reheat

Assembly

ALM

24G

24H

24DH

24DG

Current

Sensing

and

One-Shot

Control

Circuit

Jumper

CT1

CT2

Current
Transformer

BR-Backup
Contactor
If Present

RH-Reheat
Contactor

SCR Control

RH Contactor or
BR Contactor as
Required

Liebert

Unit

Control

Summary of Contents for PFH020A-L

Page 1: ...nter Blvd Fayetteville AR 72701 Tag AHU CU Liebert Vertiv Closeout Documentation Liebert MiniMate User Manual AHU Liebert PFH Condenser User Manual CU Liebert Warranty ITS Solutions 5200 Northshore Dr North Little Rock AR 72118 501 687 0286 Dated 7 13 2020 ...

Page 2: ...Precision Cooling For Business Critical Continuity Liebert Mini Mate2 User Manual 1 1 5 Tons 50 60Hz ...

Page 3: ......

Page 4: ...nsors 11 3 4 Switches 11 3 5 Free Cooling 12 3 6 Optional Configuration Prop Fan Condensing Units 12 3 7 Optional Configurations Water Glycol Cooled Units 12 3 8 Optional Configuration Chilled Water Units 12 4 0 SHIP LOOSE ACCESSORIES FIELD INSTALLED 13 4 1 Remote Monitoring Autochangeover and Leak Detection Equipment 13 5 0 SITE PREPARATION AND INSTALLATION 15 5 1 Installation Considerations 15 5...

Page 5: ... 46 7 0 SYSTEM PERFORMANCE MICROPROCESSOR CONTROLS 51 7 1 Temperature Control 51 7 1 1 Cooling Heating Required 51 7 1 2 Cooling Operation Cooling Compressorized Direct Expansion and Chilled Water 51 7 1 3 Heating Operation 51 7 2 Humidity Control 52 7 2 1 Dehumidification Humidification Required 52 7 2 2 Dehumidification Operation Compressorized Direct Expansion DX Systems 52 7 2 3 Humidification...

Page 6: ... 2 Figure 4 Model number nomenclature Self contained water glycol cooled units 3 Figure 5 Model number nomenclature Chilled water units 4 Figure 6 Wall mounted display box 10 Figure 7 Free cooling option example 12 Figure 8 Air cooled systems 1 and 1 5 tons 16 Figure 9 Water glycol cooled systems 1 and 1 5 tons 17 Figure 10 Split system air cooled systems 17 Figure 11 Refrigerant piping diagram 22...

Page 7: ... 8 Connection sizes and torque 23 Table 9 Refrigerant charge 23 Table 10 Line charges refrigerant per 100 ft 30m of Type L copper tube 23 Table 11 Refrigerant charge in Liebert pre charged R 407C line sets 24 Table 12 Unit net weights Air cooled units 25 Table 13 Unit dimensions 36 Table 14 Recommended minimum wire size 36 Table 15 Piping and electrical connections 37 Table 16 View default setpoin...

Page 8: ...tact Reheat Type 0 No Reheat E Electric Reheat S SCR Reheat G Hot Gas Reheat Not available with Free Cooling Option Supply Power P 208 230 1 60 X 277 1 60 Unit Type A Air Cooled F Air Cooled with Free Cooling Coil Refrigerant Hot Gas Bypass 7 R 407C Hot Gas Bypass Nominal Capacity kBtuh 12 18 60Hz Sensor Packages 0 None A Filter Clog B Smoke Sensor C High Temperature Sensor D Filter Clog and Smoke...

Page 9: ...S SCR Reheat E Unit Type only Supply Power P 208 230 1 60 X 277 1 60 E E 0 Unit Type E Split Evaporator K Split Evaporator with Free Cooling Hot Gas Bypass 0 Not Contained in Unit Nominal Capacity kBtuh 12 18 60Hz Sensor Packages 0 None A Filter Clog B Smoke Sensor C High Temperature Sensor D Filter Clog and Smoke Sensor E Filter Clog and High Temperature Sensor F Smoke Sensor and High Temperature...

Page 10: ... Humidifier Contact J Canister Humidifier and Remote Humidifier Contact D 20 2 P H A Reheat Type 0 No Reheat E Electric Reheat S SCR Reheat G Hot Gas Reheat Not available with Free Cooling Option Supply Power P 208 230 1 60 X 277 1 60 W E 7 Unit Type W Water Glycol Cooled G Water Glycol Cooled with Free Cooling Coil Refrigerant Hot Gas Bypass 7 R 407C Hot Gas Bypass Sensor Packages 0 None A Filter...

Page 11: ...Canister Humidifier and Remote Humidifier Contact D 23 2 P H A Reheat Type 0 No Reheat E Electric Reheat H Hot Water Reheat Supply Power P 208 230 1 60 X 277 1 60 S 220 1 50 C E 0 Unit Type C Chilled Water Hot Gas Bypass 0 Not Contained in Unit Nominal Capacity kBtuh 23 60Hz 22 50Hz Sensor Packages 0 None A Filter Clog B Smoke Sensor C High Temperature Sensor D Filter Clog and Smoke Sensor E Filte...

Page 12: ...tains live hazardous voltage potential The only way to ensure that there is NO voltage inside the unit is to install and open a remote disconnect switch and check the internal power supply wires with a voltmeter Refer to unit electrical schematic Follow all applicable national and local electric codes WARNING Risk of explosive discharge from high pressure refrigerant Can cause injury or death This...

Page 13: ...r other open water glycol systems are at high risk of freezing and premature corrosion Fluids in these systems must contain the proper antifreeze and inhibitors to prevent freezing and premature coil corrosion The water or water glycol solution must be analyzed by a competent water treatment specialist before startup to establish the inhibitor requirement The water or water glycol solution must be...

Page 14: ...are pre charged with refrigerant and are available with pre charged refrigerant lines or sweat adapters for field refrigerant piping Thermostat type wiring to control wall box and condensing units if applicable further simplifies the installation Easy to Service Low maintenance components are easily accessed through removable panels Spare parts are always in Liebert s inventory and available on sh...

Page 15: ...s over equipment or furniture that can be damaged by leaking water Install a watertight drain pan with a drain connection beneath ducted cooling units and ceiling mounted water glycol condenser units Route the drain line to a frequently used maintenance sink so that running water can be observed and reported in a timely manner Post a sign to report running water from the secondary drain Do not ins...

Page 16: ...rive centrifugal blower two way slow close solenoid spring return valve and factory mounted disconnect switch Design pressure is 300psi 2068 kPa with a 25psi 172 kPa close off differential 2 2 Evaporator Section Split Systems The split system evaporator is designed for ceiling installation The cabinet and chassis are constructed of heavy gauge galvanized steel The unit can be serviced using only o...

Page 17: ... up to 300 feet 91 4m from the evaporator unit The unit mounted control board also includes common alarm terminals and shutdown terminals The unit automatically restarts after a power failure Figure 6 Wall mounted display box 2 4 1 Other Standard Control Features Adjustable auto restart Calibrate sensors 5 day 2 day setback Predictive humidity control Password protection Common alarm output Alarm ...

Page 18: ...shing circuit inlet strainer drain 1 25 4mm air gap on fill line and solenoid valves Humidifier problem alarm annunciates at the wall mounted display panel Remote Humidifier Contact allows the unit s humidity controller to control a humidifier outside the unit Power to operate the remote humidifier does not come from the Liebert Mini Mate2 Available on units with or without internal humidifier 3 3...

Page 19: ...vailable in the following optional configurations Condenser coils can be phenolic coated for extended coil life in coastal areas 3 7 Optional Configurations Water Glycol Cooled Units Water glycol cooled units are also available with the following piping options Two way water regulating valve with 350 psi 2413kPa design pressure Three way water regulating valve with 150psi 1034kPa design pressure T...

Page 20: ...or electric reheat and humidifier The kits include installation instructions and are designed to be added to the evaporator unit before it is installed in the ceiling Electric reheat kits cannot be installed in units with free cooling 4 1 Remote Monitoring Autochangeover and Leak Detection Equipment The Liebert RCM4 is a four point normally open dry contact monitoring panel One Form C dry contact ...

Page 21: ...0 5m and a corresponding number of hold down clips The Liebert LT460 requires an external 24VAC 0 12A power source such as EXT XFMR or XFMR24 Liebert SiteScan is a monitoring solution that gives you decision making power to effectively manage the equipment critical to your business Liebert SiteScan enables communication from Liebert environmental and power units as well as many other pieces of ana...

Page 22: ...eaks and should not contain ventilation grilles NOTE Before installing unit determine whether any building alterations are required to run piping wiring and ductwork Follow all unit dimensional drawings and refer to the submittal engineering dimensional drawings of individual units for proper clearances Table 1 Application limits evaporator and chilled water units Input Voltage Range of Return Air...

Page 23: ... if possible This will allow easy access for routine maintenance or service Do not attach additional devices such as smoke detectors etc to the housing because they could interfere with maintenance or service Do not install units in areas where normal unit operating sound might disturb the working environment Avoid locating the evaporator unit with the optional air grille kit in confined areas tha...

Page 24: ...g MMD12A 265 120 MMD12E 220 100 MMD14W 260 118 MMD18A 295 134 MMD18E 225 102 MMD20W 300 136 MMD22C 220 100 MMD23C 220 100 MM2CF 63 29 Add 40 lb 20 kg to units with free cooling or hot water reheat coils Weights assume reheat and humidifier package is included Glycol Cooled System Ducted Glycol Cooled System Grille Water Cooled System Ducted Water Cooled System Grille Split System Ducted Split Syst...

Page 25: ...nce between ceiling grids and building structural members is the unit s height plus 3 inches 76mm Install the four field supplied rods by suspending them from suitable building structural members Locate the rods so that they will align with the four mounting holes in the flanges that are part of the unit base Securely anchor the top ends of the suspension rods Make sure all nuts are tight Using a ...

Page 26: ...nections are required A drain line from the evaporator coil drain pan This line also serves as the drain for the optional humidifier A water supply line to the optional humidifier if applicable Refrigerant piping connections between the evaporator unit and the outdoor condensing unit for split systems If the evaporator unit is a chilled water model connections to the building chilled water source ...

Page 27: ...turn connection sizes are 5 8 15 9mm OD copper Water Glycol Loop Emerson recommends installing manual service shutoff valves at the supply and return line to each unit This permits routine service and emergency isolation of the unit Install 1 2 13mm diameter condensing fluid inlet and 1 2 13mm diameter condensing fluid outlet When the condensing fluid quality is poor Emerson recommends placing pro...

Page 28: ... 95 5 1 Use sweat adapter kit matched to the Liebert Mini Mate2 and outdoor condensing unit refrigerant connection sizes 2 Measure pipe runs and calculate pipe size and equivalent feet of suction and liquid lines per Tables 5 and 8 3 Use a flow of dry nitrogen through the piping during brazing to prevent formation of copper oxide scale inside the piping Copper oxide forms when copper is heated in ...

Page 29: ... Maximum PFH Level Below Evaporator ft m 1 or 1 5 150 45 40 12 15 4 6 Maximum recommended total equivalent pipe length is 150 ft 46m Suction and liquid lines may require additional specialty items when vertical lines exceed 20 ft 6m and or condensing unit installation is more than 15 ft 4 6m below the evaporator Contact Emerson Application Engineering for assistance Evaporator Evaporator Condensin...

Page 30: ...2 2 0 67 1 0 0 3 4 6 1 4 0 48 0 14 22 5 6 85 12 0 3 65 1 3 8 2 4 0 73 2 9 0 88 1 3 0 39 6 4 1 95 0 65 0 19 32 0 9 75 16 0 4 87 1 5 8 2 9 0 88 3 5 1 06 1 6 0 48 7 2 2 19 0 72 0 21 36 0 10 97 19 5 5 94 Refrigerant trap Four times equivalent length of pipe per this table Table 9 Connection sizes and torque Size OD Cu Model Tons Coupling Size Torque Ib ft 3 8 1 and 1 5 6 10 12 5 8 1 and 1 5 11 35 45 N...

Page 31: ...e coupling body hex nut and union nut with the proper size wrench until the coupling bodies bottom out or until a definite resistance is felt 6 Using a marker or pen make a line lengthwise from the coupling union nut to the bulkhead 7 Tighten the nuts an additional quarter turn the misalignment of the lines shows how much the coupling has been tightened This final quarter turn is necessary to ensu...

Page 32: ...s to Blower Motor Customer supplied threaded rods for module support from ceiling typ 4 Shaded area indicates a recommended clearance of 24 610mm for component access and removal Threaded Rod Centers Left End Threaded Rod Centers Right End 3 8 10mm holes for module rigging typ 2 each end Unit hanging supports Removable Access Panels Evaporator Supply ducted only Evaporator Return ducted only 20 50...

Page 33: ... 8 203mm 20 1 4 514mm 7 5 8 194mm 2 1 4 57mm 16 406mm 1 25 4mm 14 357mm 1 1 4 32mm 18 457mm 3 4 19mm Flange Shaded area indicates a recommended clearance of 30 762mm for component access and removal 5 127mm Cabinet dimensions same as DPN000172 Front of Unit One Way Air Return to Unit Three Way Unit Discharge Removable for filter access and removal 2 51mm 1 25 4mm DPN000173 Rev 1 ...

Page 34: ...l Outlet Connection Extends 3 1 2 88 9mm beyond panel exterior 1 2 12 7mm OD CU Water Glycol Inlet Connection Extends 3 1 2 88 9mm beyond panel exterior Condenser Air Inlet for Self Contained Air Cooled Units Evaporator Air Outlet BACK OF UNIT See Detail C 3 4 19mm NPT Female Condensate Drain Connection Drain is trapped internally and must not be trapped outside of the module Evaporator Air Inlet ...

Page 35: ...4 32mm 2 51mm 2 51mm 12 1 16 306mm 3 3 16 81mm 3 3 4 95mm 4 1 8 105mm 2 3 8 60mm 2 3 4 70mm 12 1 2 318mm 1 3 8 35mm 1 3 8 35mm 1 3 8 35mm 9 7 8 251mm 7 7 8 200mm 7 3 16 183mm 7 5 8 194mm 3 3 8 86mm 3 3 8 86mm 3 1 8 79mm 3 1 2 89mm 1 1 8 29mm 2 1 8 54mm 4 7 8 124mm Detail A Detail C Detail B Detail D 10 254mm DPN000171 Rev 0 ...

Page 36: ...ary pump contacts to terminals TB1 8 and TB1 9 to shut down the unit upon high water condition in the pump 10 Reinstall the access panels 11 Reconnect power to the unit 12 Run the unit to make sure the pump works properly Operate the pump and check the drain line and discharge line for leaks Correct as needed Figure 17 Condensate pump WARNING Risk of electric shock Can cause injury or death Discon...

Page 37: ...air cooled units Hot Gas Bypass Control Valve DPN000168 Rev 0 Condenser Coil High Pressure Switch Compressor Filter Drier Expansion Valve Sensing Bulb External Equalizer Evaporator Coil Hot Gas Bypass Solenoid Valve Hose Bibs DPN000169 Rev 2 Bleed Valve Free Cooling Coil Free Cooling Control Valve Temperature Stat Fluid Return Fluid Supply Shutoff Valve FIELD PIPING FACTORY PIPING ...

Page 38: ...le on water and glycol models Hot Gas Bypass Solenoid Valve Condenser Coil High Pressure Switch Compressor Hot Gas Bypass Solenoid Valve 3 Way Head Pressure Control Valve Hot Gas Bypass Control Valve Liquid Line Solenoid Valve Check Valve 3 8 SAE 45 Male Flare MCD or Atmospheric PFH Pressure Relief Valve Sight Glass Lee Temp Receiver Liquid Injection Valve Bulb Liquid Injection Valve Suction Line ...

Page 39: ...ug provided For 208 VAC applications the low voltage transformer tap must be changed Refer to the electrical schematic Wall Box Control Connections A four conductor thermostat type field supplied wire must be connected between the evaporator control board and the wall box display See Figures 22 28 and 29 for electrical connections Condensing Unit Control Connections A field supplied four conductor...

Page 40: ...ormally closed switch having a minimum 75VA rating use field supplied 24V Class 1 Wire Drycooler Circulating pump control circuit TB70 71 Optional w Econ O Cycle models Use field supplied 24V Class 2 wire Customer Remote Alarm Connection Field supplied 24V Class 2 wiring to Terminals TB1 1 TB1 2 and TB1 3 Entrance for customer low volt connection Site Monitoring Connection Terminals TB4 1 TB4 2 ar...

Page 41: ...al schematic NOTICE Risk of incorrect input power supply Can cause equipment damage The line voltage supplied must correspond with the voltage specified on the unit s nameplate 5 5 2 Indoor Condenser Fan Ductwork The total external static pressure for the inlet and outlet ducts including grille must not exceed 0 5 inches of water Hood intake dimensions should be the same as the condensing unit duc...

Page 42: ...ss Connection Here Item 1 Item 2 Screw Only Top Step 2 3 Remove These Screws First High and Low Voltage Wire Harness See Unit Schematic for Wiring Blower and Motor Assembly Blower Motor and Controller Access Cover Fan Speed Controller Capillary Tube From Fan Speed Controller Screw onto Access Valve in Discharge Line Inside Unit Shaded area indicates a recommended clearance of 24 610mm for componen...

Page 43: ...2 Piping Connections and Coolant Requirements 5 6 3 Electrical Connections Refer to 5 4 4 Electrical Connections for general wiring requirements and cautions Refer to electrical schematic when making connections Power Connections The outdoor condensing unit requires its own power source and earth ground with a disconnect switch field supplied to isolate the unit for maintenance A transformer is av...

Page 44: ...l Connections in mm Piping Connections in mm 60 Hz A B C D E F G PFH014A L 2 1 4 57 5 1 4 133 7 3 4 197 8 3 4 222 5 127 7 1 4 184 PFH020A L Source DPN000132 Rev 1 B C A F G D E DPN000132 Rev 1 Liquid Line Quick Connect Male Coupling Suction Line Quick Connect Male Coupling Electrical Entrance for High Voltage Connection Electrical Entrance for Low Voltage Connection ...

Page 45: ...ssure Alarm 4 Hot Gas Bypass Connection Electric service connection to contactor or terminal block Single or three phase electric service not provided by Liebert High voltage electric power supply entrance Low voltage electric power supply entrance Earth ground connection terminal for field wiring Field supplied unit disconnect switch Single or three phase electric service not provided by Liebert ...

Page 46: ... voltage to power wiring matches equipment nameplate ___ 13 Power wiring connections completed between disconnect switch evaporator and condensing unit including earth ground ___ 14 Power line circuit breakers or fuses have proper ratings for equipment installed ___ 15 Control wiring connections completed to evaporator and condensing unit if required including wiring to wall mounted control panel ...

Page 47: ...lences active current alarms If no alarms are present help text will appear Down Arrow Decreases the value of displayed parameter while in a set mode ENTER Stores changes or new settings in the microprocessor Figure 26 Microprocessor control layout Active alarms are displayed on the LCD screen and sound an audible beeper To silence an alarm press the Alarm Silence Help key as prompted on the displ...

Page 48: ... HUMIDITY ALARM LOW HUMIDITY ALARM Scroll through this sub menu by using the Up Down Arrows then press Enter to select a particular function To change a particular value press Enter and use the Up Down Arrows to change the value When the value has been changed press Enter to store the value For example to change the temperature setpoint from the main status display 1 Press Menu key to display main...

Page 49: ...ess Enter then use the Up Down arrows to change the first character press enter to store press the up down button to change the second character etc 6 1 6 Setback The microprocessor can be programmed for night and weekend setback Two 2 events can be programmed for a five day work week and two 2 events can be programmed for a two day weekend The following table can be used to devise a setback plan ...

Page 50: ...he RH reading falls The final RH reading will then be lower than actually desired If the temperature drop was significant enough the percentage RH could be low enough to activate the humidifier If the absolute humidity control is selected over dehumidification may be avoided When overcooling occurs i e causing an increase in the RH reading the humidity control program estimates what the RH will be...

Page 51: ...WILL AUTOMATICALLY SHUT THE UNIT OFF EVEN IF THE ALARM IS DISABLED SIMILARLY OPTIONAL FACTORY INSTALLED SMOKE DETECTORS ARE WIRED TO SHUT THE EVAPORATOR UNIT OFF REGARDLESS OF THE ENABLE DISABLE STATUS 6 1 11 Alarm Time Delay Each individual alarm can be programmed with a time delay see Table 19 causing the unit to delay a specified amount of time 0 255 seconds before recognizing the alarm The ala...

Page 52: ...AGES WATER FLOW LOSS SMOKE DETECTED LOSS OF AIR FLOW HUMIDIFIER PROBLEM FILTER CLOG 6 1 14 Custom Text To modify the two custom alarm messages select CUSTOM TXT Then select CUS TXT 1 or CUS TXT 2 Text can be up to 20 characters in length and can be either a blank space or any of the following alphanumeric characters and symbols A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0 1 2 3 4 5 6 7 8 ...

Page 53: ...s this special customer selectable alarm is active Custom alarm 2 Normally off unless this special customer selectable alarm is active Power Normally on unless unit is turned off through the wall box or any of the following optional devices high temperature sensor smoke detector High Water Alarm or Remote Shutdown NOTE In order to update the DIP switch settings power must be cycled Off then On fro...

Page 54: ...in the Test Outputs mode may damage the unit Do not operate the unit in the Test Outputs mode any longer than is necessary for troubleshooting NOTICE Risk of extended unit operation in the test outputs mode for troubleshooting Can cause damage to the unit Do not operate unit in the test outputs mode any longer than is necessary for troubleshooting The outputs are as follows Normal Fan Normal speed...

Page 55: ...Wknd Temp 2 Wknd Tsens 2 Wknd Humd 2 Wknd Hsens 2 Wkdy Temp 1 Wkdy Tsens 1 Wkdy Humd 1 Wkdy Hsens 1 Wkdy Time 2 Wkdy Temp 2 Wkdy Tsens 2 Wkdy Humd 2 Wkdy Hsens 2 Setup Operation Restart TD C F Degrees Humidity Control Dipswch 00000000 Pos 12345678 Setpoint Password Enter New PSW Setpt PSW 000 Diagnostics Test Inputs Test Outputs Test Microcontroller Custom Text Custom Text 1 Custom Text 2 Custom A...

Page 56: ...nsate Pump Aux Alarm TB3 2 Connection to Terminal 2 Wall Box TB1 8 Condensate Pump Aux Alarm TB3 1 Connection to Terminal 1 Wall Box TB1 7 Common Alarm Connection TB4 2 Site Monitoring Connection TB1 6 Common Alarm Connection TB4 1 Site Monitoring Connection TB1 5 Remote Shutdown P16 Remote Sensor Connection TB1 4 Remote Shutdown TB1 3 Customer Alarm Connection 2 1 2 3 4 5 10 9 8 7 6 Q1 Q2 Q3 Q4 9...

Page 57: ...ni Mate2 50 Figure 29 Wall box board DS1 RT1 SH1 LS1 T 4 U1 U5 U4 Y1 T 5V GND TB3 1 TB3 2 TB3 3 TB3 4 TP4 TP3 TP1 U6 U8 U7 TP2 U3 U2 P1 1 10 8 7 6 5 4 3 2 1 ASSY NO 415361G_____ LIEBERT REV 14 p2 1 RA1 TB3 SW1 Wall Box DIP Switches 1 8 ...

Page 58: ...nt of 100 The reheat is DEACTIVATED when the heat requirement is 50 less than the activation point Ground Current Detector GCD A Ground Current Detector is factory installed on all 1 ton through 3 ton Liebert Mini Mate2 units with reheat The GCD detects reheat leakage current and shuts down operation of the reheat A steady green LED indicates that the reheat is operating properly A red LED indicat...

Page 59: ...ccomplished by operating the compressor without the hot gas bypass active The fan will operate at low speed unless the cooling requirement reaches 100 At that point the low speed fan is disabled unless manually overridden by the user until the cooling requirement decreases to 0 Dehumidification will also be disabled if the heating requirement exceeds 125 It will be re enabled when the heating requ...

Page 60: ...efinitions and Troubleshooting The following list provides a definition and troubleshooting suggestions for each type of alarm Refer to 11 0 Troubleshooting for additional details If you need further assistance contact your Emerson supplier THE CUSTOMER MUST SPECIFY ALARM S AT THE TIME OF ORDER OTHER DEVICES AND WIRING MAY BE REQUIRED AT THE FACTORY FOR SOME OF THE ALARMS 8 1 1 Custom Alarms Custo...

Page 61: ...isconnected cable or a failed sensor 8 1 5 Humidifier Problem Alarm The Humidifier Problem Alarm will sound and display a message if any of the following humidifier conditions occur Overcurrent detection fill system fault or end of cylinder life 8 1 6 High Water Alarm A float switch in the evaporator pan will shut down the evaporator on a high water level Clear the drain and reset power to the uni...

Page 62: ...humidification The dehumidification performance can be tested by setting the humidity setpoint at 10 RH below room relative humidity The compressor should turn on and the fan should switch to low speed Upon completion of testing return the humidity setpoint to the desired humidity 9 1 6 High Temperature Sensor Optional The optional high temperature sensor feature is a bi metal operated sensing dev...

Page 63: ...strictions within the air circuit must be avoided Note that high efficiency filters can reduce air performance and evaporator capacity Motor Replacement If the evaporator motor needs to be replaced first remove the air distribution plate on the bottom of the unit Removing the mounting screws allows the entire blower wheel and motor to be lifted out 9 2 4 Refrigeration System Each month the compone...

Page 64: ...ed at 240 psi 1655 kPa The valve is factory set and should not need adjustment There is significant difference in the way standard pressure and high pressure valves are adjusted Consult Liebert Precision Cooling Support Glycol Solution Maintenance It is difficult to establish a specific schedule of inhibitor maintenance since the rate of inhibitor depletion depends upon local water conditions Anal...

Page 65: ...table Adjustment 1 Install the suction and discharge pressure gauge 2 Adjust temperature setpoint to call for cooling so that the refrigeration compressor will run continuously 3 Remove the TOP adjusting nut from the valve 4 Insert an Allen wrench in the brass hole at top of valve in adjusting port and turn CLOCKWISE if a higher evaporator temperature is required Adjust no more than 1 4 turn at a ...

Page 66: ...ts OF THE SAME SYSTEM are usually caused by improper cleaning If a severe burnout has occurred the oil will be black and acidic 9 3 2 Electrical Failure In the event of an electrical failure and subsequent burnout of the refrigeration compressor motor proper procedures must be followed to thoroughly remove any acids that would cause a future failure There are two kits that can be used with a compl...

Page 67: ...ier RUN DRAIN switch is located in the humidifier assembly This switch should be in the RUN position when the humidifier is in normal operation and in the DRAIN position when a manual drain sequence is required The electronic control board for the humidifier is also located in the humidifier assembly When the unit is energized power is available to humidifier Operations involves the following step...

Page 68: ...place the canister with the identical part Replacing the Humidifier Canister The proper procedure to replace the humidifier canister is 1 Turn off the humidifier by lowering the humidity setpoint below the ambient humidity level Record the original setpoint 2 Place the RUN DRAIN switch in the DRAIN position to drain the water from the canister 3 Return the RUN DRAIN switch to the RUN position afte...

Page 69: ...permit normal operation of the unit consult your Emerson supplier The POT1 controls the duration of the drain cycle This adjustment is factory set at 60 seconds and should not be readjusted without consulting your Emerson supplier The POT3 control is factory set at 100 The maximum capacity of the system is factory set subsequently no field adjustment is possible The DIP switch settings are used to...

Page 70: ...ngs tight ___ 4 Check water make up valve for leaks Drain Lines ___ 1 Check for obstructions and sediment buildup ___ 2 Check for external damage and or corrosion ___ 3 Check for leaks Fan Section ___ 1 Impellers free of debris ___ 2 Bearings in good condition SEMIANNUALLY Compressor Section ___ 1 Signs of oil leaks ___ 2 Vibration isolation Refrigeration Cycle ___ 1 Suction pressure ___ 2 Head pr...

Page 71: ...VAC 2 VAC at terminals P4 8 and P4 4 If voltage is detected check contactor If there is no voltage at P4 8 and P4 4 check at terminals P2 3 and P2 8 If voltage check freezestat Compressor high head pressure See below for cause Plugged filter dryer Replace filter dryer Low refrigerant charge Check pressure gauges See Tables 5 and 9 for recommended pressures At low ambient temperatures proper refrig...

Page 72: ... pressure minimum 10 psig 69kPa Fan will not operate at low speed when selected from control panel Open wiring or failed board Verify LOW FAN is displayed at the control panel Check for 24 VAC 2 VAC at terminals P3 4 and P1 9 If no voltage check wiring and or replace interface board Check fan relays Fan will not operate at low speed during dehumidification Temperature requirement is too high Verif...

Page 73: ... change without notice Liebert is a registered trademark of Liebert Corporation All names referred to are trademarks or registered trademarks of their respective owners Technical Support Service Web Site www liebert com Monitoring liebert monitoring emerson com 800 222 5877 Outside North America 00800 1155 4499 Single Phase UPS Server Cabinets liebert upstech emerson com 800 222 5877 Outside North...

Page 74: ...Liebert Prop Fan Condensing Unit 50 Hz and 60 Hz Installer User Guide ...

Page 75: ...r any installation or operational issues with your product check the pertinent section of this manual to see if the issue can be resolved by following outlined procedures Visit https www VertivCo com en us support for additional assistance ...

Page 76: ...Field Fabricated Line Sets 17 2 5 4 Installation of Piping to Units 19 2 5 5 R 407C PFH Installed as a Replacement Condensing Unit in an R 22 System 20 2 5 6 General System Charge Requirements 21 2 6 Electrical Connections 22 2 6 1 Low Voltage Control Wire Connections 23 2 6 2 Low Voltage Control Wire Sizing 23 2 7 Electrical Data 24 2 8 Checklist for Completed Installation 26 3 Operation 29 3 1 C...

Page 77: ...5 Troubleshooting 37 Vertiv Liebert PFH Installer User Guide ii ...

Page 78: ...roll compressor with internal vibration isolation mountings pressure safety controls and built in overload protection Standard features include crankcase heater high pressure switch condenser coil sight glass filter drier hot gas bypass system with liquid quenching valve direct drive propeller fan and motor and Liebert Lee Temp flood back head pressure control These models are designed to provide ...

Page 79: ...ed Line sets are only available for 1 to 3 5 Ton Units 1 2 2 Refrigerant Line Sweat Adapter Kit This kit includes the compatible fittings required two for the insulated suction line and two for the liquid line when using field supplied interconnecting refrigerant lines instead of the pre charged line sets 1 2 3 277V Step Down Transformer A 37 5A 277V step down transformer is available for 1 to 3 T...

Page 80: ...ertiv or your local Vertiv sales representative If possible maintain equipment and packaging until it is at the installation location 2 2 Location Considerations To ensure an adequate air supply locate all condensing units in a clean air area away from loose dirt and debris that can clog the coil Avoid ground level sites with public access or areas that are exposed to heavy snow accumulation Locat...

Page 81: ...0 91 PFH020A L PFH027A L PFH027A H 48 1219 31 787 18 457 241 109 PFHZ27A L PFH037A L PFH036A L PFH042A L PFH041A L PFH037A H PFH036A H 53 1343 36 1 4 918 18 457 351 159 PFHZ37A L PFHZ36A L PFH042A H PFH041A H PFHZ42A L PFHZ41A L PFH067A L PFH066A L Source DPN000130 Rev 1 Table 2 1 Cabinet and floor planning data horizontal air discharge Vertiv Liebert PFH Installer User Guide 4 ...

Page 82: ...ule Net Weight lb kg 60Hz 50Hz A B C D PFH067A H PFH066A H 53 1343 36 1 4 918 38 1 2 978 5 1 2 140 488 222 PFHZ67A L PFHZ66A L PFH096A L PFH095A L 570 259 Source DPN000131 Rev 0 Table 2 2 Electrical and piping connections top air discharge Vertiv Liebert PFH Installer User Guide 5 ...

Page 83: ...Figure 2 3 Dimensional data 277V step down transformer Vertiv Liebert PFH Installer User Guide 6 ...

Page 84: ...4 222 5 127 7 1 4 184 PFH020A L PFH027A L PFH027A H 2 51 5 3 4 146 8 1 2 216 4 3 4 121 6 3 4 171 8 1 2 216 PFHZ27A L PFH037A L PFH036A L PFH042A L PFH041A L PFH037A H PFH036A H 2 51 6 152 8 1 2 216 4 3 4 121 7 3 4 197 8 1 2 216 PFHZ37A L PFHZ36A L PFH042A H PFH041A H PFHZ42A L PFHZ41A L PFH067A L PFH066A L Source DPN000132 Rev 1 Table 2 3 Electrical and piping connections horizontal air discharge ...

Page 85: ...n mm Piping Connections in mm 60Hz 50Hz A B C D E F G PFH067A H PFH066A H 2 51 6 152 8 1 2 216 4 3 4 121 7 3 4 197 8 1 2 216 PFHZ67A L PFHZ66A L PFH096A L PFH095A L 11 1 2 292 Source DPN000133 Rev 0 Table 2 4 Piping and electrical connections top air discharge Vertiv Liebert PFH Installer User Guide 8 ...

Page 86: ...Figure 2 6 General piping arrangement Vertiv Liebert PFH Installer User Guide 9 ...

Page 87: ...Figure 2 7 Electrical field connections 1 to 5 ton units Vertiv Liebert PFH Installer User Guide 10 ...

Page 88: ...Figure 2 8 Electrical field connections 8 ton units Vertiv Liebert PFH Installer User Guide 11 ...

Page 89: ...Figure 2 9 Single phase 1 3 ton model schematic typical Vertiv Liebert PFH Installer User Guide 12 ...

Page 90: ...Figure 2 10 Three phase 3 5 ton model schematic typical Vertiv Liebert PFH Installer User Guide 13 ...

Page 91: ...ng inside critical spaces These split systems require two refrigerant lines an insulated copper suction line and a copper liquid line between the evaporator and condensing units The 8 ton Liebert Mini Mate2 split system units will require four refrigerant lines between the evaporator and condensing units Each refrigeration circuit will need one insulated copper suction line and one copper liquid l...

Page 92: ...r from the air The longer the compressor piping is left open to air the harder it will be to fully evacuate If left open too long the POE oil may need to be replaced before achieving the required vacuum level NOTE Complete all piping and evacuate lines before connecting quick connects when using an optional sweat adapter kit and field installed hard piping NOTE Follow all proper brazing practices ...

Page 93: ...quiv Pipe Length ft m Maximum PFH Level Above Evaporator ft m Maximum PFH Level Below Evaporator ft m 1 1 5 2 150 45 40 12 15 4 6 3 3 5 5 8 150 45 50 15 15 4 6 Table 2 5 Pipe length and condenser elevation relative to evaporator Vertiv Liebert PFH Installer User Guide 16 ...

Page 94: ...units Use tube benders and make all bends before making connections to either end of the pre charged pipes Coil any excess tubing in a horizontal plane with the slope of the tubing toward the condensing unit Use a soft flexible material to pack around the tubes when sealing openings in walls to prevent tube damage and to reduce vibration transmission Line Size in Length ft m Charge R 407C lb oz kg...

Page 95: ...irst two evacuations with dry nitrogen 3 After the third evacuation verify 500 microns is maintained for at least one minute after the piping is isolated from the vacuum pump by a shutoff valve Field piping is now ready to be installed between evaporator and condensing units Model Numbers R 407C Charge Coupling Size 60 Hz 50 Hz lb oz kg Liquid Suction 95 F 35 C Standard Sound PFH014A _L7 8 6 3 80 ...

Page 96: ... be evacuated and unit placed in a 500 micron vacuum prior to connecting piping See Table 2 12 on page 22 for field charge required Use caution when connecting the quick connect fittings Read through the following steps before making the connections 1 Remove protector caps and plugs 2 Carefully wipe coupling seats and threaded surfaces with a clean cloth 3 Lubricate the male diaphragm and syntheti...

Page 97: ... possible at minimum perform a leak check to ensure that the components that remain line set evaporator are leak tight 2 Check for acid or contaminants in the mineral oil Remove Existing Condensing Unit 1 Recover refrigerant in system using proper refrigeration practices 2 Oil removal The majority of the oil will be in the old condensing unit compressor condenser and receiver which will be replace...

Page 98: ...ge for line set charges required and Table 2 12 on the next page for standard evaporator units If a non standard evaporator was used refer to evaporator unit serial tag for charge amounts and use 1 oz 0 0283kg R 407C for every 1 oz 0 0283kg R 22 used in old evaporator and piping 2 5 6 General System Charge Requirements Liebert split system units are designed with quick connect fittings and are fac...

Page 99: ...G Risk of electric shock Can cause injury or death Disconnect all local and remote electric power supplies before working within Use a voltmeter to be sure power is turned off before making any electrical connections NOTICE Risk of incorrect phase sequencing Can cause equipment damage Three phase power must be connected to the unit line voltage terminals in proper sequence so that the scroll compr...

Page 100: ... unit and the evaporator Refer to Figure 2 5 on page 8 Figure 2 7 on page 10Figure 2 8 on page 11 and electrical schematic Figure 2 9 on page 12 throughFigure 2 10 on page 13 2 6 2 Low Voltage Control Wire Sizing Low voltage wiring should be sized to allow a 1 volt maximum drop due to line resistance between the evaporator and condensing unit Use NEC Class 1 or 2 wiring according to wire routing c...

Page 101: ... 8 16 4 8 7 7 0 OPD 35 25 15 15 42 3 5 FLA 15 0 7 1 6 0 WSA 18 4 8 7 7 2 OPD 30 15 15 67 5 FLA 24 1 11 7 9 1 WSA 29 3 14 2 11 1 OPD 45 20 15 96 8 FLA 36 2 18 1 13 4 WSA 41 4 20 6 15 3 OPD 60 30 20 FLA Full Load Amps WSA Wire Size Amps minimum supply circuit current capacity OPD Overcurrent Protection Device fuse or circuit breaker Table 2 16 Electrical data Standard sound and ambient models 95 F 3...

Page 102: ...able in high ambient versions Table 2 17 Electrical data High ambient models 105 F 41 C 60Hz Model Nominal Capacity Tons Electrical Characteristic Input Voltage Phase 208 230 1 208 230 3 460 3 575 3 27 2 FLA 12 9 WSA 15 9 OPD 25 37 3 FLA 18 0 12 9 7 1 WSA 22 3 15 9 8 7 OPD 35 25 15 42 3 5 FLA 14 5 6 9 WSA 17 9 8 5 OPD 30 15 67 5 FLA 22 5 10 9 8 3 WSA 27 7 13 4 10 2 OPD 45 20 15 FLA Full Load Amps ...

Page 103: ... FLA FLA Full Load Amps Table 2 20 Electrical data High ambient models 105 F 41 C 50Hz Model Nominal Capacity Tons Electrical Characteristic Input Voltage Phase 220 1 380 415 3 36 3 FLA 18 0 6 9 41 3 5 FLA 8 4 66 5 FLA 10 9 95 8 FLA FLA Full Load Amps Table 2 21 Electrical data Quiet Line models 95 F 35 C 50Hz 2 8 Checklist for Completed Installation 1 All items unpacked and checked 2 Proper clear...

Page 104: ...uit breakers or fuses have proper ratings for equipment installed 11 Control wiring connections completed 12 All wiring connections are tight 13 Foreign materials have been removed from area in and around all equipment installed shipping materials construction materials tools etc 14 Fans and blowers rotate freely and in the proper direction 15 Blank startup sheet has been sent with the evaporator ...

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Page 106: ...ressor If while in the cold start mode the high head pressure switch DOES trip within 10 seconds of the activation of the LLSV the control does not annunciate the alarm The control will turn off the LLSV and delay 10 seconds The control will permit this occurrence two more times or a total of three times If on the fourth try the high head pressure switch trips within 10 seconds the control will an...

Page 107: ...ressor suction The liquid quenching valve bulb senses this increased superheat and opens allowing liquid refrigerant to mix with the discharge gas desuperheating it Proper mixing of the three refrigerant paths ensures stable operation and system performance The liquid quenching valve bulb must be located downstream of all these connections to control superheat at the compressor inlet Superheat set...

Page 108: ...be a variation of approximately 3 to 6psig 21 to 41kPa on the evaporator due to the differential on the hot gas bypass 8 Return temperature setpoint to the desired setting Vertiv Liebert PFH Installer User Guide 31 ...

Page 109: ...Vertiv Liebert PFH Installer User Guide 32 This page intentionally left blank ...

Page 110: ...r liquid refrigerant to be driven out of the compressor This is especially important at low ambient temperatures 4 2 Compressor Failure If a compressor motor burns out the stator wiring insulation decomposes forming carbon water and acid Not only must the compressor be replaced but the entire refrigeration circuit must be cleaned of the harmful contaminants left by the burnout Successive burnouts ...

Page 111: ...on or electrical connections before relieving pressure NOTE Release of refrigerant to the atmosphere is harmful to the environment Refrigerant must be recycled or discarded in accordance with federal state and local regulations 1 Disconnect power 2 Attach suction and discharge gauges to access fittings 3 Recover refrigerant using approved recovery procedures and equipment Use a filter drier when c...

Page 112: ...verify charge level at lower ambients block the condenser coil to maintain 230psig 1585kPa discharge pressure to ensure the head pressure control valve is closed At these conditions the charge level should be above the sight glass in the receiver NOTE The 5 ton high ambient 5 ton Quiet Line and 8 ton models consist of two condenser coils and two receivers When restricting airflow on these units th...

Page 113: ...L PFH037A _H PFH036A _H 8 0 23 PFHZ37A _L PFHZ36A _L PFH042A _H PFH041A _H PFHZ42A _L PFHZ41A _L PFH067A _L PFH066A _L 18 0 51 PFH067A _H PFH066A _H 50 1 42 PFHZ67A _L PFHZ66A _L PFH096A _L 3 ton circuit 5 ton circuit PFH095A _L 3 ton circuit 5 ton circuit 18 0 51 18 0 51 Table 4 1 Field verification charge Vertiv Liebert PFH Installer User Guide 36 ...

Page 114: ... system Check for leaks repair and add refrigerant Plugged filter drier Replace filter drier Improper superheat adjustment Reset expansion valve for 10 15 F 5 6 to 8 4 C superheat at evaporator Defective liquid line solenoid valve Check valve and coil replace if necessary Low compressor capacity no cooling Defective liquid line solenoid valve Check valve and coil replace if necessary Plugged filte...

Page 115: ... motor defective Check for motor winding short or ground Single phasing Check voltage across all 3 legs at contactor Correct source of problem Motor burnout Check control panel for welded contactor contacts or welded overload contacts Replace defective components Table 5 1 Troubleshooting continued Vertiv Liebert PFH Installer User Guide 38 ...

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Page 117: ... logos referred to are trade names trademarks or registered trademarks of their respective owners While every precaution has been taken to ensure accuracyand completeness herein Vertiv Co assumes no responsibility and disclaims allliability for damages resulting from use of this information or for any errors or omissions Specifications are subject to change without notice SL 10059_REV9_10 17 590 1...

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