Carrier 50HCQA04-06, Installation Instructions Manual

Page 1: ...ry Installed Options 43 SMOKE DETECTORS ECONOMI ER IV OCCUPANCY SWITCH Step 13 Install Accessories 43 Step 14 Check Belt Tension 45 BELT FORCE DEFLECTION METHOD BELT TENSION METHOD Pre Start and Start Up 45 Typical Unit Piping 45 START UP CHECKLIST CL 1 SAFETY CONSIDERATIONS Improper installation adjustment alteration service maintenance or use can cause explosion fire electrical shock or other co...

Page 2: ...h WARNING UNIT OPERATION AND SAFETY HAZARD Failure to follow this warning could cause personal injury death and or equipment damage Puron R 410A refrigerant systems operate at higher pressures than standard R 22 systems Do not use R 22 ser vice equipment or components on Puron refrigerant equip ment WARNING PERSONAL INJURY AND ENVIRONMENTAL HAZ ARD Failure to follow this warning could cause person...

Page 3: ... Fused Disconnect D Thru The Base Connections F Non Fused Disconnect and Thru The Base Connections Service Options 0 None 1 Unpowered Convenience Outlet 2 Powered Convenience Outlet 3 Hinged Panels 4 Hinged Panels Unpowered Convenience Outlet 5 Hinged Panels Powered Convenience Outlet Intake Exhaust Options A None B Temperature Economizer w Barometric Relief K Enthalpy Economizer w Barometric Reli...

Page 4: ...4 Fig 2 Unit Dimensional Drawing 04 06 Size Units Horizontal Connections Economizer Vertical Connections Economizer ...

Page 5: ... including clearance to combustible surfaces unit per formance and service access below around and above unit as specified in unit drawings See Fig 3 NOTE Consider also the effect of adjacent units Unit may be installed directly on wood flooring or on Class A B or C roof covering material when roof curb is used Do not install unit in an indoor location Do not locate air inlets near exhaust vents o...

Page 6: ...ll outdoor air hood 7 Install condensate line trap and piping 8 Make electrical connections 9 Install other accessories FRAME MOUNTED INSTALLATION Frame mounted applications generally follow the sequence for a curb installation Adapt the sequence as required to suit spe cific installation plan C B A D NOTE Unit not designed to have overhead obstruction Contact Application Engineering for guidance ...

Page 7: ...s shown Ductwork must be attached to curb and not to the unit The accessory thru the base power connection package must be installed before the unit is set on the roof curb If electric and control wiring is to be routed through the base pan attach the accessory thru the base service connections to the basepan in accordance with the accessory installation in structions NOTE The gasketing of the uni...

Page 8: ...8 Fig 4 Roof Curb Details 50HCQA04 06 ROOFCURB ACCESSORY CRRFCURB001A02 CRRFCURB002A02 1 2 356 2 0 610 UNIT SIZE ...

Page 9: ...etween the roof curb and the base rail inside the front and rear 0 0 in clearance be tween the roof curb and the base rail inside on the duct end of the unit This will result in the distance between the roof curb and the base rail inside on the condenser end of the unit being approximately 1 4 in 6 4 mm Although unit is weatherproof guard against water from higher level runoff and overhangs After ...

Page 10: ...ld be secured to the flanges In sulate and weatherproof all external ductwork joints and roof or building openings with counter flashing and mastic in accor dance with applicable codes Do not cover or obscure visibility to the unit s informative data plate when insulating horizontal ductwork Fig 7 Horizontal Conversion Panels Fig 8 Location of Notches DETAIL A PLACE ALL SEAL STRIP IN PLACE BEFORE ...

Page 11: ... to a metal support tray using plastic stretch wrap Located in the re turn air compartment the assembly s metal tray is attached to the basepan and also attached to the damper using two plastic tie wraps 1 To gain access to the hood remove the filter access panel See Fig 10 2 Locate the 2 screws holding the metal tray to the basepan and remove Locate and cut the 2 plastic tie wraps secur ing the a...

Page 12: ...ood top 7 Replace the filter access panel Fig 15 Economizer Filter Installation Step 9 Units with Hinged Panels Only Relocate latch shipped inside the compressor compartment be hind the hinged compressor door to location shown in Fig 16 after unit installation If the unit does not have hinged panels skip this step and con tinue at Step 10 below Fig 16 Compressor Door Latch Location Step 10 Install...

Page 13: ... and discard before connecting field power wires to unit con nection points Make field power connections directly to line con nection pressure lugs only Connect field power supply conductors to LINE side terminals when the switch enclosure cover is removed to attach the handle Fig 19 Disconnect Switch and Unit UNITS WITHOUT FACTORY INSTALLED DISCONNECT When installing units provide a disconnect sw...

Page 14: ...y installed convenience outlets is now required by UL standards This cover cannot be factory mounted due its depth it must be in stalled at unit installation For shipment the convenience outlet is covered with a blank cover plate The weatherproof cover kit is shipped in the unit s control box The kit includes the hinged cover a backing plate and gasket 1 Remove the blank cover plate at the conveni...

Page 15: ...cts be opened to de energize all pow er to the unit Treat all units as electrically energized until the convenience outlet power is also checked and de energization is confirmed Observe National Electrical Code Article 210 Branch Circuits for use of convenience outlets Fuse On Power Type The factory fuse is a Bussman Fusetron 1 T 15 non renew able screw in Edison base type plug fuse Fig 23 Powered...

Page 16: ...AC 227 226 1 v Maximum deviation is 4 v Determine percent of voltage imbalance This amount of phase imbalance is satisfactory as it is below the maximum allowable 2 FIELD CONTROL WIRING The 50HCQ unit requires an external temperature control de vice This device can be a thermostat field supplied or a Pre mierLink controller available as factory installed option or as field installed accessory for ...

Page 17: ...o defrost thermo stats Refer to Table 3 for details of DFB Inputs and Outputs Reversing valve control The DFB has two outputs for unit reversing valve control Op eration of the reversing valves is based on internal logic this application does not use an O or B signal to determine re versing valve position Reversing valves are energized during the cooling stages and the defrost cycle and de energiz...

Page 18: ...1 DI 24 vac P2 7 CTB W1 W2 Heat 2 DI 24 vac P2 6 CTB W2 R Power 24 vac P3 1 CONTL BRD 8 C Common 24 vac P3 2 CONTL BRD 4 DFT 1 DI 24 vac DFT 1 to DFT 1 DFT 2 DI 24 vac DFT 2 to DFT 2 OUTPUTS IFO Fan On DO 24 vac P3 9 REHEAT HP 2 OF OD Fan On DO 24 vac OF OFR RVS1 DO 24 vac P3 7 to P3 5 Energize in COOL RVS2 DO 24 vac P3 6 to P3 4 Energize in COOL COMP 1 DO 24 vac P3 10 FPT1 REHEAT HP 6 COMP2 DO 24...

Page 19: ...end of the Defrost cycle Fig 30 DIP Switch Settings Defrost Board ELECTRIC HEATERS 50HCQ units may be equipped with field installed accessory electric heaters The heaters are modular in design with heater frames holding open coil resistance wires strung through ce ramic insulators line break limit switches and a control con tactor One or two heater modules may be used in a unit Heater modules are ...

Page 20: ...allation instructions for details on tap connections on the field installed electric heat accessory All fuses on 50HCQA units are 60 A Note that all heaters are qualified for use with a 60 A fuse regardless of actual heater ampacity so only 60 A fuses are necessary Single Point Boxes without Fuses Refer to accessory heater and single point box installation in structions for details on tap connecti...

Page 21: ...1 Connect the VIO leads from Heater 1 and Heater 2 to terminal TB4 1 Connect the BRN leads to terminal TB4 3 See Fig 35 Fig 35 Accessory Electric Heater Control Connections CONTROL AND POWER WIRING DIAGRAMS Figures 36 44 are typical control and power wiring diagrams DEFROST BOARD ORN BRN Field Connections E HEAT P3 3 3 1 ORN BRN VIO BRN BRN VIO TB4 VIO HR2 HR1 BRN VIO BRN Elec Htr HR1 On Heater 1 ...

Page 22: ...22 Fig 36 Electro Mechanical Control Wiring 208 230v 460v ...

Page 23: ...23 Fig 37 Electro Mechanical Control Wiring 575v ...

Page 24: ...24 Fig 38 Electro Mechanical Power Wiring 208 230 1 60 ...

Page 25: ...25 Fig 39 Electro Mechanical Power Wiring 208 230 3 60 ...

Page 26: ...26 Fig 40 Electro Mechanical Power Wiring 460 3 60 ...

Page 27: ...27 Fig 41 Electro Mechanical Power Wiring 575 3 60 ...

Page 28: ...28 Fig 42 PremierLink Wiring Schematic 208 230 460v ...

Page 29: ...29 Fig 43 PremierLink Wiring Schematic 575v ...

Page 30: ...30 Fig 44 RTU Open System Control Wiring ...

Page 31: ...nterface provides status for normal operation setup parame ters checkout tests and alarm and error conditions with a 2 line 16 character LCD display and four button keypad Electrical Rated Voltage 20 to 30 Vac RMS 50 60 Hz Transformer 100 va maximum system input Nominal Power Consumption at 24 Vac 60 Hz 11 5 VA without sensors or actuators Relay Digital Output Rating at 30 Vac maximum power from C...

Page 32: ...ty Insensitive Connection S BUS S BUS S BUS Sylk Bus Enthalpy Control Sensor Polarity Insensitive Connection Bottom Left Terminal Block IAQ 2 10 2 10 vdc Air Quality Sensor Input e g CO2 sensor IAQ COM COM Air Quality Sensor Common IAQ 24V 24 vac Air Quality Sensor 24 vac Source ACT 2 10 2 10 vdc Damper Actuator Output 2 10 vdc ACT COM COM Damper Actuator Output Common ACT 24v 24 vac Damper Actuat...

Page 33: ... See Fig 48 for CO2 sensor wiring Fig 48 CO2 Sensor Wiring Interface Overview This section describes how to use the EconoMi er user inter face for Keypad and menu navigation Settings and parameter changes Menu structure and selection User Interface The user interface consists of a 2 line LCD display and a 4 but ton keypad on the front of the economizer controller Keypad Use the four navigation but...

Page 34: ...ARMS NOTE Some parameters in the menus use the letters MA or MAT indicating a mixed air temperature sensor location before the cooling coil This unit application has the control sensor locat ed after the cooling coil in the fan section where it is designated as Cooling Supply Air Temperature or SAT sensor Setup and Configuration Before being placed into service the W7220 Economizer mod ule must be...

Page 35: ...of measured mixed air from MAT sensor Displays _ _ _ F if not connected short or out of range DA TEMP _ _ _ F 0 to 140 F DISCHARGE AIR TEMPERATURE after Heating section Displays when Discharge Air sensor is connected and displays measured dis charge temperature Displays _ _ _F if sensor sends invalid value if not connected short or out of range OA TEMP _ _ _ F 40 to 140 F OUTSIDE AIR TEMP Displays...

Page 36: ...is NOT connected VENTMAX With 2 speed fan units VENTMAX L low speed fan and VENTMAX H high speed fan settings are required 2 8 V 2 to 10 Vdc DCV MAXIMUM DAMPER POSITION Displays only if a CO2 sensor is connected Used for Vbz ventilation max cfm setpoint Displays 2 to 10 V if 3 sensors RA OA and MA In AUTO mode dampers controlled by CFM 100 to 9990 cfm increment by 10 If OA MA RA and CO2 sensors ar...

Page 37: ...actory defaults when set to YES LCD will briefly flash YES and change to NO but all parameters will change to the factory default values NOTE RECHECK AUX2 IN and FANTYPE for required 2 speed values ADVANCED SETUP MA LO SET 45 F 35 to 55 F Incremented by 10 SUPPLY AIR TEMPERATURE LOW LIMIT Temperature to achieve Freeze Protection close damper and alarm if tem perature falls below setup value FREEZE...

Page 38: ...gnals an ERV that the conditions are not good for economizing but are for ERV operation SYS 24 Vac out Issues a system alarm CONNECT EXH1 N A N A Closes the power exhaust fan 2 relay EXH1 ALARMS Alarms display only when they are active The menu title ALARMS includes the number of active alarms in parenthesis When using SYLK bus sensors SYLK will appear on the screen and when using 20k OA temperatu...

Page 39: ...ings see Table 11 For dry bulb operation with a 1 speed indoor fan with or without DCV see Tables 12 and 13 For en thalpy operation with a 1 speed indoor fan with or without DCV see Tables 14 and 15 Table 11 Damper Minimum Position Settings and Readings on Checkout Menu MENU PARAMETER PARAMETER DEFAULT VALUE PARAMETER RANGE AND INCREMENT NOTES ALARMS CONT SHUTDOWN ACTIVE N A N A AUX2 IN is program...

Page 40: ...4v On 0v Off MIN POS to Full Open Closed to Full Open DEMAND CONTROLLED VENTILATION DCV OUTSIDE AIR GOOD TO ECONOMIZE Y1 I Y2 I FAN SPEED Y1 O Y2 O OCCUPIED UNOCCUPIED Below CO2 Set No OFF OFF HIGH 0v Off 0v Off VENTMIN Closed ON OFF HIGH 24v On 0v Off VENTMIN Closed ON ON HIGH 24v On 24v On VENTMIN Closed Yes OFF OFF HIGH 0v Off 0v Off VENTMIN Closed ON OFF HIGH 0v Off 0v Off VENTMIN to Full Open...

Page 41: ...here is also a high limit boundary for differential enthalpy The high limit bound ary is ES1 when there are no stages of mechanical cooling en ergized and HL high limit when a compressor stage is energized DEMAND CONTROLLED VENTILATION DCV OUTSIDE AIR GOOD TO ECONOMIZE Y1 I Y2 I FAN SPEED Y1 O Y2 O OCCUPIED UNOCCUPIED Below CO2 Set No OFF OFF HIGH 0v Off 0v Off VENTMIN Closed ON OFF HIGH 24v On 0v...

Page 42: ... be performed at the time of installa tion or at any time during the operation of the system as a test that the system is operable Troubleshooting Alarms The economizer module provides alarm messages that display on the 2 line LCD NOTE Upon power up the module waits 60 minutes before checking for alarms This allows time for all the configured devic es e g sensors actuator to become operational The...

Page 43: ...ors including multiple unit coordination RTU OPEN CONTROLLER FACTORY OPTION For details on operating 50HCQ units equipped with the facto ry installed RTU Open controller option refer to the Factory Installed Option RTU Open Multi Protocol Controller Con trols Start Up Operation and Troubleshooting manual CONTROLLER OPTIONS Low Ambient If the unit comes with Electro Mechanical EM control then no ad...

Page 44: ...44 Fig 52 Completing Installation of Return Air Smoke Sensor Fig 53 EconoMi er IV Wiring STEP 1 STEP 2 STEP 3 ...

Page 45: ...s force Fig 54 V Belt Force Label Fig 55 Belt Drive Motor Mounting Pre Start and Start Up This completes the mechanical installation of the unit Refer to the unit s Service Manual for detailed Pre Start and Start Up instructions Download the latest versions from HVAC Part ners www hvacpartners com Typical Unit Piping Each heat pump refrigeration system includes a compressor ac cumulator reversing ...

Page 46: ... Accurater all 3 4 and 5 ton units Accurater 3 and 4 ton units only Acutrol COMPRESSOR ACCUMULATOR HPS Table 17 Cooling Mode each circuit COMPONENT STATUS POSITION Reversing Valve Energized Check Valve A Closed Check Valve B Open Check Valve C Closed Check Valve D Open Table 18 Heating Mode each circuit COMPONENT STATUS POSITION Reversing Valve De energized Check Valve A Open Check Valve B Closed ...

Page 47: ...inals are tight Y N _____ Check that indoor air filters are clean and in place Y N _____ Check that outdoor air inlet screens are in place Y N _____ Verify that unit is level Y N _____ Check fan wheels and propeller for location in housing orifice and verify setscrew is tight Y N _____ Verify that fan sheaves are aligned and belts are properly tensioned Y N _____ Verify that scroll compressors are...

Page 48: ...temperature _______________ F D Liquid line temperature at outlet or reheat coil _______________ F E Confirm correct rotation for compressor Y N _____ F Check for correct ramp up of outdoor fan motor as condenser coil warms Y N _____ 4 Check unit charge per charging chart Y N _____ 5 Switch unit to high latent mode sub cooler by closing humidistat with Y1 closed Y N _____ OBSERVE A Reduction in su...