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Carrier WeatherMaster 50HCQ 04 Series, Руководство по установке, Страница: 43 / 48

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43

Clearing Alarms

Once the alarm has been identified and the cause has been re-

moved (e.g. replaced faulty sensor) the alarm can be cleared from

the display.
To clear an alarm, perform the following:
1. Navigate to the desired alarm.
2. Press the 

 (Enter) button. ERASE? displays.

3. Press the 

 (Enter) button. ALARM ERASED displays.

4. Press the 

 (Menu up/Exit) button to complete the action

and return to the previous menu.

If the alarm still exists after clearing it, it is redisplayed within

5 seconds.

Smoke Detectors

Smoke detectors are available as factory-installed options on

50HCQ models. Smoke detectors may be specified for supply air

only, for return air without or with economizer, or in combination

of supply air and return air. Return-air smoke detectors are ar-

ranged for vertical return configurations only. All components

necessary for operation are factory-provided and mounted. The

unit is factory-configured for immediate smoke detector shutdown

operation; additional wiring or modifications to unit terminal

board may be necessary to complete the unit and smoke detector

configuration to meet project requirements.
Units equipped with factory-optional return-air smoke detectors

require a relocation of the sensor module at unit installation. See

Fig. 56 for the as-shipped location.
COMPLETING RETURN AIR SMOKE SENSOR

INSTALLATION
1. Unscrew the two screws holding the return air smoke detector

assembly. See Fig. 57, Step 1. Save the screws.

2. Turn the assembly 90 degrees and then rotate end to end.

Make sure that the elbow fitting is pointing down. See

Fig. 57, Step 2.

3. Screw the sensor and detector plate into its operating position

using screws from Step 1. See Fig. 57, Step 3. 

4. Connect the flexible tube on the sampling inlet to the sam-

pling tube on the basepan.

Fig. 56 — Return Air Smoke Detector,

Shipping Position

ADDITIONAL APPLICATION DATA
Refer to the application data document “Factory Installed Smoke

Detectors for Small and Medium Rooftop Units 2 to 25 Tons” for

discussions on additional control features of these smoke detectors

including multiple unit coordination.

Fig. 57 — Completing Installation of Return Air Smoke Sensor

RETURN AIR 

S

MOKE DETECTOR

(A

S

 

S

HIPPED)

S

TEP 1

S

TEP 2

S

TEP 

3

Содержание WeatherMaster 50HCQ 04 Series

Страница 1: ...PLETING RETURN AIR SMOKE SENSOR INSTALLATION ADDITIONAL APPLICATION DATA RTU Open Control System 44 Controller Options 44 LOW AMBIENT Step 12 Adjust Factory Installed Options 44 SMOKE DETECTORS ECONOMI ER IV OCCUPANCY SWITCH Step 13 Install Accessories 44 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 CHECKLI...

Страница 2: ...his warning could cause personal injury death and or equipment damage R 410A refrigerant systems operate at higher pressures than standard R 22 systems Do not use R 22 service equipment or components on R 410A refrigerant equipment WARNING PERSONAL INJURYAND ENVIRONMENTAL HAZARD Failure to follow this warning could cause personal injury or death Relieve pressure and recover all refrigerant before ...

Страница 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...

Страница 4: ...4 Fig 2 50HCQ 04 06 Units Built On and After 4 15 2019 ...

Страница 5: ...5 Fig 3 50HCQ 04 06 Units Built Prior to 4 15 2019 ...

Страница 6: ...6 Fig 4 50HCQ 04 06 Corner Weights and Clearances ...

Страница 7: ...7 Fig 5 50HCQ 04 06 Base Rail Details ...

Страница 8: ...8 Fig 6 50HCQ 04 06 Thru the Base Charts ...

Страница 9: ...nsate drain connection plug 3 Rig and place unit 4 Convert unit to side duct connection arrangement 5 Install field fabricated ductwork at unit duct openings 6 Install 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 t...

Страница 10: ...10 Fig 7 Roof Curb Details 50HCQA04 06 ROOFCURB ACCESSORY CRRFCURB001A02 CRRFCURB002A02 1 2 356 2 0 610 UNIT SIZE ...

Страница 11: ... in Fig 9 Refer to rigging instructions on unit Before setting the unit onto the curb recheck gasketing on curb Position unit on roof curb so that the following clearances are maintained 1 4 in 6 4 mm clearance between the roof curb and the base rail inside the front and rear 0 0 in clearance between the roof curb and the base rail inside on the duct end of the unit This will result in the distanc...

Страница 12: ...ld be secured to the flanges Insulate and weatherproof all external ductwork joints and roof or build ing openings with counter flashing and mastic in accordance with applicable codes Do not cover or obscure visibility to the unit s informative data plate when insulating horizontal ductwork Fig 10 Horizontal Conversion Panels Fig 11 Location of Notches DETAIL A PLACE ALL SEAL STRIP IN PLACE BEFORE...

Страница 13: ... To gain access to the hood remove the filter access panel See Fig 13 2 Locate the 2 screws holding the metal tray to the basepan and remove Locate and cut the 2 plastic tie wraps securing the assembly to the damper See Fig 15 Be careful not to damage any wiring or cut tie wraps securing any wiring 3 Carefully lift the hood assembly with metal tray through the filter access opening and assemble pe...

Страница 14: ... shown in Fig 19 after unit installation If the unit does not have hinged panels skip this step and continue at Step 10 below Fig 19 Compressor Door Latch Location Step 10 Install External Condensate Trap and Line The unit has one 3 4 in condensate drain connection on the end of the condensate pan and an alternate connection on the bottom See Fig 20 Unit airflow configuration does not determine wh...

Страница 15: ...ctory run test purposes only re move 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 22 Disconnect Switch and Unit UNITS WITHOUT FACTORY INSTALLED DISCONNECT When inst...

Страница 16: ...ry installed conve nience outlets is now required by UL standards This cover cannot be factory mounted due its depth it must be installed at unit instal lation 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 conve...

Страница 17: ...l CodeArticle 210 Branch Cir cuits for use of convenience outlets Fuse On Power Type The factory fuse is a Bussman Fusetron 1 T 15 non renewable screw in Edison base type plug fuse Fig 26 Powered Convenience Outlet Wiring Duty Cycle The unit powered convenience outlet has a duty cycle limitation The transformer is intended to provide power on an intermittent basis for service tools lamps etc it is...

Страница 18: ...t side panel Remove one of the two knockouts located on the bottom left side of the unit control box Use this hole for the control conduit UNITS WITHOUT THRU BASE CONNECTIONS ELEC TRICAL CONNECTIONS 1 Install power wiring conduit through side panel openings Install conduit between disconnect and control box 2 Install power lines to terminal connections as shown in Fig 23 on page 16 Voltage to comp...

Страница 19: ...be directly connected to the thermostat and will require a junc tion box and splice at the thermostat Fig 31 Typical Low Voltage Control Connections Thermostat Wiring Units Without Thru Base Connection Kit Pass the thermostat control wires through the hole provided in the corner post then feed the wires through the raceway built into the corner post to the control box Pull the wires over to the te...

Страница 20: ...ing both compressors run Fig 34 Defrost Control Board Location NOTES 1 Jumper for 1 3 seconds Factory Test The defrost interval timing is reduced by a factor of 0 1 seconds minute based on the positions of DIP switches SW1 and SW2 i e 90 minutes will be reduced to 9 seconds 2 Jumper for 5 20 seconds Forced Defrost Defrost runs for 30 seconds if DFT2 is open Table 3 50TCQ Defrost Board I O and Jump...

Страница 21: ... DIP Switch Settings Defrost Board ELECTRIC HEATERS 50HCQ units may be equipped with field installed accessory elec tric heaters The heaters are modular in design with heater frames holding open coil resistance wires strung through ceramic insula tors line break limit switches and a control contactor One or two heater modules may be used in a unit Heater modules are installed in the compartment be...

Страница 22: ... are necessary Single Point Boxes without Fuses Refer to accessory heater and single point box installation instruc tions for details on tap connections Fig 39 Typical Single Point Installation Low Voltage Control Connections Run the low voltage control leads from the heater module s VIO and BRN two of each if two modules are installed identify for Module 1 to the 4 pole terminal board TB4 located...

Страница 23: ...23 Fig 41 Electro Mechanical Control Wiring 208 230v 460v ...

Страница 24: ...24 Fig 42 Electro Mechanical Control Wiring 575v ...

Страница 25: ...25 Fig 43 Electro Mechanical Power Wiring 208 230 1 60 ...

Страница 26: ...26 Fig 44 Electro Mechanical Power Wiring 208 230 3 60 ...

Страница 27: ...27 Fig 45 Electro Mechanical Power Wiring 460 3 60 ...

Страница 28: ...28 Fig 46 Electro Mechanical Power Wiring 575 3 60 ...

Страница 29: ...29 Fig 47 PremierLink Wiring Schematic 208 230 460v ...

Страница 30: ...30 Fig 48 PremierLink Wiring Schematic 575v ...

Страница 31: ...31 Fig 49 RTU Open System Control Wiring ...

Страница 32: ...ovides status for normal operation setup parameters 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 Class 2 input...

Страница 33: ... 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 Actuator 24 vac Source NA AUX2 OCC E GND EXH1 AUX1 O Y2 Y1 Y2 O Y1 O C R 50048848 002 Rev A NA A2 OCC EX A1 Y2I Y2O Y1I Y1O C R MAT MAT OAT OAT S BUS S BUS IAQ 2 10 IAQCOM...

Страница 34: ...20 Controller Navigation Buttons To use the keypad when working with Setpoints System and Ad vanced Settings Checkout tests and Alarms 1 Navigate to the desired menu 2 Press the Enter button to display the first item in the currently displayed menu 3 Use the and buttons to scroll to the desired parameter 4 Press the Enter button to display the value of the cur rently displayed item 5 Press the but...

Страница 35: ...COND STAGE COOLING DEMAND Y2 IN Y2 I signal from space thermostat or unitary controller for second stage cooling ON 24 vac on terminal Y2 I OFF 0 vac on terminal Y2 I COOL Y2 OUT OFF ON OFF SECOND STAGE COOLING RELAY OUTPUT Cool Stage 2 Relay Output to mechanical cooling Y2 OUT terminal MA TEMP _ _ _ F or _ _ _ C 40 F to 150 F 40 C to 66 C SUPPLY AIR TEMPERATURE Cooling Mode Displays value of meas...

Страница 36: ...ow the set point the Y1 O and Y2 O will not be energized on the controller DRYBLB SET 63 F 17 C 48 F to 80 F 9 C to 27 C increment by 1 F OA DRY BULB TEMPERATURE CHANGEOVER SETPOINT Dry bulb set point will only appear if using dry bulb changeover Set point determines where the economizer will assume outdoor air temperature is good for free cooling e g at 63 F unit will economize at 62 F and below ...

Страница 37: ...the capacity of the RTU The value is found on the nameplate label for the specific unit AUX1 OUT NONE NONE ERV EXH2 SYS Select OUTPUT for AUX1 O relay NONE not configured output is not used ERV Energy Recovery Ventilator EXH2 second damper position 24 vac out for second exhaust fan SYS use output as an alarm signal OCC INPUT INPUT or ALWAYS OCCUPIED MODE BY EXTERNAL SIGNAL When using a setback the...

Страница 38: ...on damper to the full open position Exhaust fan contacts enable during the DAMPER OPEN test Make sure to pause in the mode to allow exhaust contacts to energize due to the delay in the system DAMPER CLOSE N A N A Positions damper to the fully closed position CONNECT Y1 O N A N A Closes the Y1 O relay Y1 O CONNECT Y2 O N A N A Closes the Y2 O relay Y2 O CONNECT AUX1 O N A N A Energizes the AUX outp...

Страница 39: ...R N A N A ACTUATOR ERROR Actuator has failed or become disconnected check for stall over voltage under voltage and actuator count Replace actuator if damper is movable and supply voltage is between 21 6 V and 26 4 V Check actuator count on STATUS menu FREEZE ALARM N A N A Check if outdoor temperature is below the LOW Temp Lockout on set point menu Check if Mixed air temperature on STATUS menu is b...

Страница 40: ...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 0 v Off 0 v Off VENTMIN Closed On Off High 24 v On 0 v Off VENTMIN Closed On On High 24 v On 24 v On VENTMIN Closed Yes Off Off High 0 v Off 0 v Off VENTMIN Closed On Off High 0 v Off 0 v Off VENTMIN to Full Open Closed to Full Open On On High 24 v On 0 v Off VENTMIN to Ful...

Страница 41: ...omizing is available When all of the OA conditions are above the selected boundary the conditions are not good to economize and the mode is set to NO Figure 55 shows the 5 current boundaries There is also a high lim it boundary for differential enthalpy The high limit boundary is ES1 when there are no stages of mechanical cooling energized and HL high limit when a compressor stage is energized Tab...

Страница 42: ...the Enter button to start the test The unit pauses and then displays IN PROGRESS When the test is complete DONE appears 4 When all desired parameters have been tested press the Menu Up button to end the test The Checkout tests can all be performed at the time of installation or at any time during the operation of the system as a test that the system is operable TROUBLESHOOTING Alarms The economize...

Страница 43: ...nit terminal board may be necessary to complete the unit and smoke detector configuration to meet project requirements Units equipped with factory optional return air smoke detectors require a relocation of the sensor module at unit installation See Fig 56 for the as shipped location COMPLETING RETURN AIR SMOKE SENSOR INSTALLATION 1 Unscrew the two screws holding the return air smoke detector asse...

Страница 44: ... IV wiring External occupan cy control is managed through a connection on the Controls Con nections Board If external occupancy control is desired connect a time clock or remotely controlled switch closed for Occupied open for Unoc cupied sequence at terminals marked OCCUPANCY Cut jumper JMP 2 to complete the installation Step 13 Install Accessories Available accessories include Roof curb Thru bas...

Страница 45: ...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 instruc tions Download the latest versions from HVAC Partners www hvacpartners com Typical Unit Piping Each heat pump refrigeration system includes a compressor accu mulator reversing valve dual function outdoor coil with vapor header check valve cooling liquid...

Страница 46: ...nd 5 ton units Accurater 3 and 4 ton units only Acutrol COMPRESSOR ACCUMULATOR HPS Check Valve Schematic shown in Heating Mode Table 16 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 17 Heating Mode each circuit COMPONENT STATUS POSITION Reversing Valve De energized Check Valve A Op...

Страница 47: ...rminals 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 a...

Страница 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 s...

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