Carrier 50TFQ004-007 Specifications

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50TFQ004-007
Single-Package Rooftop
Heat Pump Units
Installation, Start-Up and
Service Instructions
CONTENTS
Page
SAFETY CONSIDERATIONS ......................... 1
INSTALLATION ................................... 1-41
Step 1-- Provide Unit Support ...................... 1
ROOF CURB
SLAB MOUNT
ALTERNATE UNIT SUPPORT
Step 2 -- Field Fabricate Ductwork .................. 2
Step 3 -- Install Condensate Drain Line
and External Trap ................................. 2
Step 4 -- Rig and Place Unit ......................... 2
POSITIONING
Step 5 -- Make Electrical Connections .............. 7
FIELD POWER SUPPLY
FIELD CONTROL WIRING
DEFROST BOARD
HEAT ANTICIPATOR SETTINGS
Step 6- Adjust Factory-Installed Options ......... 17
DISCONNECT SWITCH
CONVENIENCE OUTLET
NOVAR CONTROLS
MANUAL OUTDOOR-AIR DAMPER
PREMIERLINK TM CONTROL
OPTIONAL ECONOMI$ER IV AND ECONOMI$ER2
ECONOMISER IV STANDARD SENSORS
ECONOMI$ER IV CONTROL MODES
Step 7 -- Adjust Indoor-Fan Speed ................. 29
DIRECT-DRIVE MOTORS
BELT-DRIVE MOTORS
PRE-START-UP ..................................... 42
START-UP ....................................... 42-45
SERVICE ........................................ 45-47
TROUBLESHOOTING ............................ 48-51
INDEX .............................................. 52
START-UP CHECKLIST .......................... CL-I
SAFETY CONSIDERATIONS
Installation and servicing of air-conditioning equipment can
be hazardous due to system pressure and electrical compo-
nents. Only trained and qualifed service personnel should
install, repair, or service ai>conditioning equipment.
Untrained personnel can perform basic maintenance func-
tions of cleaning coils and filters and replacing filters. All other
operations should be performed by trained service personnel.
When working on ai>conditioning equipment, observe precau-
tions in the literature, tags and labels attached to the unit, and
other safety precautions that may apply.
Follow all safety codes. Wear safety glasses and work
gloves. Use quenching cloth for unbrazing operations. Have
fire extinguisher available for all brazing operations.
Before performing service or maintenance operations on
unit, turn off main power switch to unit and tag disconnect.
Ensure voltage listed on unit data plate agrees with electri-
cal supply provided for the unit. Electrical shock could
cause serious personal injury.
INSTALLATION
Unit is shipped in the vertical dischtuge configuration. To
convert to horizontal configuration, remove horizont_d duct
opening covers. Using the salne screws, install covers on duct
openings in basepan of unit with the insulation-side down.
Seals tuound duct openings must be tight.
Step 1 -- Provide Unit Support
ROOF CURB--Assemble and install the accesso U roof
curb in accordance with instructions shipped with the curb.
See Fig. 1. Install insulation, cant strips, roofing felt, and
counter flashing as shown. Ductwork must be attached to the
curb, not to the unit. If electric or control power is to be routed
through the basepan, be sure to choose the appropriate acces-
sory kit. See Fig. 1. Attach the accessory thru-the-bottom ser-
vice connections to the basepan and roof curb in accor&mce
with the accessoly installation instructions. Connections must
be installed before the unit is set on the roof curb.
IMPORTANT: The gasketing of the unit to the roof curb
is critical for watertightness. Install gasket supplied with
the roof curb as shown in Fig. 1. Improperly applied
gasket can also result in air leaks and poor unit
performance.
The roof curb should be level. This is necessa U for the unit
drain to function properly. Unit leveling tolerances am shown
in Fig. 2. Refer to Accesso U Roof Curb Installation Instruc-
tions for additional information, as required.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53500018-01 Printed in U,S.A, Form 50TFQ-SSI Pg 1 9-05 Replaces: 50TFQ-dSI
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1 2 3 4 5 6 ... 53 54

Summary of Contents

Page 1 - Service Instructions

50TFQ004-007Single-Package RooftopHeat Pump UnitsInstallation, Start-Up andService InstructionsCONTENTSPageSAFETY CONSIDERATIONS ...

Page 2 - Ductwork -- Secure all

Table 3A -- Electrical Data (Units Without Electrical Convenience Outlet)50TFQUNITSIZE004(3Tons)005(4Tons)NOMINALV-PH-Hz208/230-1-60208/230-3-60460-3-

Page 3 - OTFOO04-007

Table 3A -- Electrical Data (Units Without Electrical Convenience Outlet) (cont)58TFGUNITSIZEOO5(4 Tons)(cont)006(5 Tons)NOMINALV-PH-Hz460-3-60575-3-6

Page 4 - maximum unit static dif

Table 3A -- Electrical Data (Units Without Electrical Convenience Outlet) (cont)50TFQUNITSIZE007(6 Tons)NOMINALV-PH-Hz208/230-3-60460-3-60575-3-60VOLT

Page 5 - 45 I 54 I 50 I 54

Table 3B -- Electrical Data (Units With Electrical Convenience Outlet)50TFQUNITSIZE004(3 Tons)005(4 Tons)NOMINALV-PH-Hz208/230-1-60208/230-3-60460-3-6

Page 6 - VERT BALI

Table 3B -- Electrical Data (Units With Electrical Convenience Outlet) (cont)50TFGUNITSIZE005(4 Tons)(cont)006(5 Tons)NOMINALV-PH-Hz460-3-60575-3-6020

Page 7

Table 3B -- Electrical Data (Units With Electrical Convenience Outlet) (cont)50TFQUNITSIZE007(8 Tons)NOMINALV-PH-Hz208/230-3-60460-3-60575-3-60VOLTAGE

Page 8 - _c_'_C-T, _ EQD_PMENT

FIELD CONTROL WIRING -- Install a CmTier-approvedaccessory thermostat assembly according to installationinstructions included with the accessory. Loca

Page 9

Step 6 -- Adjust Factory-Installed OptionsDISCONNECT SWITCH -- The optional disconnect switchis non-fused. The switch can be locked in place for safet

Page 10

Fig. 14- Optional Manual Outdoor-AirDamper with Hood AttachedLUPr60wn_o-wwz1.00.80.60.40.2//2 4 6 8 10 12OUTDOOR AIRFLOW (cfm x 100)Fig. 15 -- Outdoor

Page 11 - 45/ 5ott

HVAC SENSOR INPUTSSPACE TEMP x._SET POINT "x_SUPPLY AIR TEMP -_OUTDOOR TEMPINDOOR AIR QUALITYOUTDOOR AIR QUALITY x_DUAL MODE SENSOR/STATCOMP SAFE

Page 12

SLAB MOUNT (Horizontal Units Only) -- Provide a levelconclete slab that extends a minimum of 6 in. beyond the unitcabinet. Instffll a gravel apron in

Page 13

Table 4-- PremierLink TM Sensor UsageOUTDOOR AIR RETURN AIR OUTDOOR AIR RETURN AIRAPPLICATION TEMPERATURE SENSOR TEMPERATURE SENSOR ENTHALPY SENSOR EN

Page 14 - 5o/ 5ott

Enthalpy Sensors and Control -- Tile enthalpy control(HH57AC077) is supplied as a field-inst_dled accessory to beused with the EconoMiSer2 damper cont

Page 15

OPTIONAL ECONOMI$ER IV AND ECONOMI$ER2 --See Fig. 21 for EconoMiSer IV component locations. SeeFig. 22 for EconoMiSer2 component locations.NOTE: These

Page 16 - ...{52}

FILTER ACCESS PANELTOPPANELINDOOR COILACCESS PANELCOMPRESSORACCESS PANELOUTDOOR-AIR OPENING ANDINDOOR COILACCESS PANELFig. 23 -- Typical Access Panel

Page 17 - Outdoor-Air Damper Installed

(FIELDACCESSORY)REMOTE MINPOSITION POTIRZ'H0_POT(135 0_)-FOR OCCUPANCY CONTROLREPLACE JUMPER WITHFIELD-SUPPLIED TIME CLOCKOAT TEMPI tZNTHALPY SEN

Page 18 - Damper with Hood Attached

2500wz 2000w 1500ww 1000Lm 500©Z-- 0SLiii i i i _ i i i i i i i i i0.05 0115 0.25STATIC PRESSURE (in. wg)Fig. 30 -- Barometric Flow Capacity"530L

Page 19 - ,,_ :.!o-oh._ ... :F] __ I11

EXHAUSTFAN SET POINTLED LIGHTSWHEN EXHAUSTCONTACT IS MADEMINIMUM DAMPERPOSITION SETTINGMAXIMUM DAMPER _DEMAND CONTROLVENTILATION SET POINTLED LIGHTS W

Page 20 - 5 (][)

CONTROL CONTROL POINTCURVE APPROX °F (°C)AT 50% RHA 73 123)B 70{21)C 67 (19)O 63 (17)85 90 95 100 105 110(29) (32) (35) (38) (41) (43)/ I/\HIGH LIMITC

Page 21 - ÷ MOUNTING PLATE

4.5.Connect 24 vac acloss terminals TR and TRI.Carefiflly adjust the minimum position potentiometeruntil the measured mixed-air temperature matches th

Page 22 - /--CONTROLLER

Table 7 -- CO 2 Sensor Standard SettingsSETTING EQUIPMENT12 Interface w/StandardBuilding Control System345Economizer678 Health & Safety9 Parking/A

Page 23 - 33 3/8"

i i I DALT i I iCONNECTOR I B I C I DRAIN I GAS I POWER I CONTROLPKG. ACCY, i i i HOLE i i iCRBTMPWROO1A01 I I I I 3/,d, I 3/4, [19] NPT I"C-_T_l

Page 24 - FIELD-SUPPLIED TIME CLOCK

Table 8 -- Fan RPM at Motor Pulley Settings*UNIT50TFQ 0 1/2 1 11/20O4t 1000 976 952 928004** 1455 1423 1392 1360005t 1175 1135 1094 1054005** 1455 142

Page 25

Table 11 -- Fan Performance 50TFQ004 -- Vertical Discharge Units; Standard Motor (Direct Drive)AIRFLOW(Cfm)9OO100011001200130014001500ESP0.670.600.550

Page 26 - Sensor Mounting Location

Table 13 i Fan Performance 50TFQ004 i Vertical Discharge Units; High-Static Motor and Drive*AIRFLOWCFM900100011001200130014001500EXTERNAL STATIC PRESS

Page 27 - In nooo,©

Table 15- Fan Performance 50TFQ005- Vertical Discharge Units; Alternate Motor and Drive*AIRFLOWCFM120013001400150016001700180019002000EXTERNAL STATIC

Page 28

Table 17 -- Fan Performance 50TFQ006 -- Vertical Discharge Units; Standard Motor (Direct Drive)AIRFLOW(Cfm)15OO160017001800190020002100220023002400250

Page 29 - \ wITHBELT

Table 19 -- Fan Performance 50TFQ006 -- Vertical Discharge Units; High-Static Motor and Belt Drive*AIRFLOWCFM15001600170018001900200021002200230024002

Page 30

Table 21 -- Fan Performance 50TFQ007 -- Vertical Discharge Units; High-Static Motor and Belt Drive*AIRFLOWCFM18001900200021002200230024002500260027002

Page 31 - GENERAL FAN PERFORMANCE NOTES

Table 23 -- Fan Performance 50TFQ004 -- Horizontal Discharge Units; Alternate Motor (Belt Drive)*AIRFLOWCFM9OO100011001200130014001500EXTERNAL STATIC

Page 32

Table 25 -- Fan Performance 50TFQ005 -- Horizontal Discharge Units; Standard Motor (Direct Drive)*AIRFLOW(Cfm)120013001400150016001700180019002000LOW

Page 33

Table 27 -- Fan Performance 50TFQ005 -- Horizontal Discharge Units; High-Static Motor (Belt Drive)*AIRFLOWCFM120013001400150016001700180019002000EXTER

Page 34

_X:IMUM ALLOWABLEI-"/" I J DIFFERENCE (in.)I J A-RI B-cI A-c0.5 I 1.0 I 1.0Fig. 2 -- Unit Leveling TolerancesMINIMUM PITCHONE IN. PER10 FT O

Page 35

Table 29 -- Fan Performance 50TFQ006 -- Horizontal Discharge Units; Alternate Motor (Belt Drive)*AIRFLOWCFM15OO1600170018001g0020002100220023002400250

Page 36

Table 31 -- Fan Performance 50TFQ007 -- Horizontal Discharge Units; Standard Motor (Belt Drive)*AIRFLOWCFM18001900200021002200230024002500260027002800

Page 37

PRE-START-UP d. Make sure that all tools and miscellaneous looseparts have been removed.Failure to observe the following warnings could result inserio

Page 38

Heating -- To start the unit, turn on tile main power supply.Set the system selector switch at the HEAT position, and setthe thermostat at a setting a

Page 39

• [f SAT > SASP + 5 and economizer position >80%,economizer will go to minimum position for 3 minutes oruntil SAT > 68 IF.• [f compressor no.

Page 40

HEATING, UNIT WITH ECONOMI$ER2, PREMIER-LINK TM CONTROL AND A ROOM SENSOR -- Every40 seconds the controller will calculate the required heat stages(ma

Page 41

TOPPANEL\REMOVESCREWSREMOVESCREWSOUTDOORREMOVECONTROLPOSTCORNER POSTCOILCENTEFPOSTACCESSPANELOUTDOOR REMOVE COILCOIL CORNER POSTFig. 44-- Cleaning Out

Page 42 - START-UP

I 111111111111111111111111114i i+++ +oo- - - oo+_+_,+,0,125 52!_ , +Is +Im _ 105 41+552 m I I I I_+ I I _ I_+ I t +-4 + + 95 35 lI I.-t/I I I I I_W&ap

Page 43

TROUBLESHOOTINGUnit Troubleshooting -- For unit troubleshooting, referto Fig. 52 and Table 33.EeonoMiSer IV Troubleshooting -- See Table 34for EconoMi

Page 44 - Control Example

IITB4ITB4°COMPONENTARRANGEMENTDEFROSTBOARB TRAN°uqC -- Contactor, CompressorCAP -- CapacitorCH -- Crankcase HeaterCOMP -- Compressor MotorDB -- Defros

Page 45

Table 1 -- Physical Data50TFQ UNIT SIZENOMINAL CAPACITY (tons)OPERATING WEIGHT (Ib)UnitEconomizerEconoMi$er IVRoof Curb*COMPRESSORQuantityOil (oz)REFR

Page 46 - COILSECTION

Table 33 -- Heating and Cooling TroubleshootingPROBLEM CAUSE REMEDYCompressor and Power failure. Call power company.Outdoor Fan Fuse blown or circuit

Page 47 - _i-+ + ++-H-H-_

Table 34 -- EconoMi$er IV Input/Output LogicDemand ControlVentilation (DCV)Below set(DCV LED Off)Above set(DCV LED On)INPUTSEnthalpy* CompressorOutdoo

Page 48 - TROUBLESHOOTING

Access panels 23Barometric flow capacity 25Carrier Comfort Network 18ChaNing chart, refrigerant 47Clearance 2, 6CO2 sensorConfiguration 28Settings 2Z

Page 49 - BOARB TRAN

Copyright 2005 Carrier CorporationManufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and

Page 50

PRELIMINARY INFORMATIONMODEL NO.:DATE:BUILDING NAME:START-UP CHECKLIST(Remove and Store in Job File)SERIAL NO.:TECHNICIAN:BUILDING LOCATION:II. PRE-ST

Page 51

UNiT 5TO UNIT [CONOMISERIV VERT. ECONIV CORNER WEIGHT (A) CORNER WEIGHT [B) CORNER WEIGHT (C) CORNER WEIGHT(DWEIGHT WEIGHT M P.E. WEIGH1LB KG LB KG LB

Page 52 - TM controls 18-20

Step 5 -- Make Electrical ConnectionsUnit cabinet must have an uninterrupted, unbroken electri-cal ground to minimize the possibility of personal inju

Page 53

BLK _III<_ _J_YEL_"-BLK ? TO ii_PFIELD POWER SUPPLY_ _l_l_l_ _ _ _ EQUIPMENTr DISCONNECT i 3-GROUND208/230-1-60 i PER NEC iL208/230-3-60 FIELD

Page 54

Table2-- Electric Heating Capacities50TFQ VOLTAGE ACCESSORY ACCESSORY HEATER SINGLE POINT BOXUNIT PART NUMBER PACKAGE NO.SIZE (60 Hz) kW CRHEATER - -

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