Carrier 48TM016-028 Specifications

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.Cata

10Table 1 — Physical Data (cont)LEGEND*The ZRU140KC compressor is a tandem compressor, consisting of a ZR72KC (25% totalcapacity) and a ZR68KC (24% to

11Step 3 — Field Fabricate Ductwork — Secure allducts to building structure. Use flexible duct connectors be-tween unit and ducts as required. Insulat

12Step 7 — Orifice Change — This unit is factory as-sembled for heating operation using natural gas at an elevationfrom sea level to 2000 ft. This uni

13Step 8 — Install Gas Piping — Unit is equipped foruse with natural gas. Installation must conform with localbuilding codes or, in the absence of loc

14OPTIONAL NON-FUSED DISCONNECT — On units withthe optional non-fused disconnect, incoming power will bewired into the disconnect switch. Refer to Fig

15Table 5 — Electrical DataLEGEND*Fuse or HACR circuit breaker.NOTES:1. In compliance with NEC requirements for multimotor and combinationload equipme

16Step 10 — Make Outdoor-Air Inlet Adjust-mentsMANUAL OUTDOOR-AIR DAMPER — All units (exceptthose equipped with a factory-installed economizer) have a

17Step 12 — Install All Accessories — After all thefactory-installed options have been adjusted, install all field-installed accessories. Refer to the

18MOTORMASTER® V CONTROL INSTALLATION(48TM025 Only)Install Field-Fabricated Wind Baffles— Wind baffles mustbe field-fabricated for all units to ensure

19Step 13 — Adjust Factory-Installed OptionsPREMIERLINK™ CONTROL — The PremierLink control-ler is available as a special order from the factory and is

2INSTALLATIONInspect unit for transportation damage. If damage is found,file any claim with the transportation agency.Step 1 — Provide Unit SupportROO

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21Table 8 — PremierLink™ Sensor Usage*PremierLink control requires supply air temperature sensor 33ZCSENSAT andoutdoor air temperature sensor HH79NZ03

22Fig. 27 — Enthalpy Switch/Receiver Dimensions(33CSENTHSW)Fig. 28 — Enthalpy Sensor Dimensions(33CSENTSEN)Fig. 29 — Typical Wiring Schematic — Carrie

23DIFFERENTIAL ENTHALPY CONTROL (Fig. 30) —Differential enthalpy control requires both an enthalpy switch/receiver (33CSENTHSW) and an enthalpy sensor

24The mode jumper should be set to M3 for 4 to 20 mAoutput. The factory test jumper should remain on OFF or theenthalpy sensor will not calculate enth

25Outdoor air leakage is shown in Table 9. Return air pressuredrop is shown in Table 10.Table 9 — Outdoor Air Damper LeakageTable 10 — Return Air Pres

26LEGENDDCV — Demand Controlled VentilationIAQ — Indoor Air QualityLALS— Low Temperature CompressorLockout SwitchOAT — Outdoor-Air TemperaturePOT — Po

27ECONOMI$ERIV CONTROL MODESDetermine the EconoMi$erIV control mode before set up ofthe control. Some modes of operation may require different sen-sor

28Outdoor Enthalpy Changeover— For enthalpy control, ac-cessory enthalpy sensor (part number HH57AC078) isrequired. Replace the standard outdoor dry b

29Typically the maximum ventilation rate will be about 5 to10% more than the typical cfm required per person, usingnormal outside air design criteria.

3Fig. 2A — Roof Curb Details — 48TM016-025

30In order to have the CO2sensor control the economizerdamper in this manner, first determine the damper voltage out-put for minimum or base ventilati

31Step 14 — Install Humidistat for OptionalMoistureMi$er™ Package —MoistureMi$er dehu-midification package operation can be controlled by fieldinstall

32Fig. 46 — MoistureMi$er™ Dehumidification Operation DiagramTXV — Thermostatic Expansion Valve

33START-UPUse the following information and Start-Up Checklist onpage CL-1 to check out unit PRIOR to start-up.Unit Preparation — Check that unit has

34Table 14 — Fan Performance — 48TMD016 (Low Heat Units)*LEGEND*Standard low-medium static drive range is 873 to 1021 rpm. Alter-nate high-static driv

35Table 15 — Fan Performance — 48TMF016 (High Heat Units)*LEGEND*Standard low-medium static drive range is 873 to 1021 rpm. Alter-nate high-static dri

36Table 16 — Fan Performance — 48TMD020 (Low Heat Units)*LEGEND*Standard low-medium static drive range is 910 to 1095 rpm. Alternate high-static drive

37Table 18 — Fan Performance — 48TMD025 (Low Heat Units)*LEGEND*Standard low-medium static drive range is 1002 to 1151 rpm. Alter-nate high-static dri

38Table 19 — Fan Performance — 48TMF025 (High Heat Units)*LEGEND*Standard low-medium static drive range is 1002 to 1151 rpm. Alter-nate high-static dr

39Table 20 — Fan Performance — 48TMD028 (Low Heat Units)*LEGEND*Standard low-medium static drive range is 1066 to 1283 rpm. Alternate high-static driv

4Fig. 2B — Roof Curb Details — 48TM028

40Table 22 — Air Quantity LimitsTable 23 — Accessory/FIOP Static Pressure (in. wg)* — 48TM016-028LEGEND*The static pressure must be added to external

41Operating SequenceCOOLING, UNITS WITHOUT ECONOMIZER — Whenthermostat calls for cooling, terminals G and Y1 are energized.The indoor (evaporator) fan

42Routine 3 (OAT > 68)• Economizer is opened 100%.• Compressors 1 and 2 are cycled based on Y1 and Y2using minimum on and off times and watching th

43HEATING, UNIT WITH ECONOMI$ER2, PREMIERLINKCONTROL AND A ROOM SENSOR — Every 40 secondsthe controller will calculate the required heat stages (maxim

44FAN SHAFT BEARINGS — Lubricate bearings at leastevery 6 months with suitable bearing grease. Extended greaseline is provided for far side fan bearin

45Belt Tension Adjustment — To adjust belt tension:1. Loosen fan motor bolts.2. Turn motor jacking bolt to move motor mounting plate upor down for pro

46Gas Valve AdjustmentNATURAL GAS — The gas valve opens and closes inresponse to the thermostat or limit control.When power is supplied to valve termi

47Diagnostic IGC Control LEDs — The IGC boardhas LEDs for diagnostic purposes. Refer to Troubleshootingsectiononpage51.Optional Hinged Access Doors —

48Fig. 57 — Typical Wiring Schematic (48TM016,020 — 208/230 V Shown)

49Fig. 58 — Typical Component Arrangement

5NOTES:1. Dimensions in ( ) are in millimeters.2. Refer to Fig. 4-6 for unit operating weights.3. Remove boards at ends of unit and runners prior to r

50AHA — Adjustable Heat AnticipatorC—Contactor, CompressorCAP — CapacitorCB — Circuit BreakerCC — Cooling CompensatorCH — Crankcase HeaterCLO — Compre

51TROUBLESHOOTINGUnit Troubleshooting —Refer to Tables 27-29 andFig. 59.EconoMi$erIV Troubleshooting — See Table 30for EconoMi$er IV logic.A functiona

527. Remove jumper from TR to N.8. Remove jumper from TR to 1.9. Remove 5.6 kilo-ohm resistor from T and T1. Reconnectwires at T and T1.10. Remove jum

53Table 28 — Heating Service AnalysisLEGENDGR — GroundTable 29 — MoistureMi$er™ Dehumidification Subcooler Service AnalysisPROBLEM CAUSE REMEDYBurners

54Table 30 — EconoMi$erIV Input/Output Logic*For single enthalpy control, the module compares outdoorenthalpy to the ABCD set point.†Power at N termin

55Fig. 59 — IGC Control (Heating and Cooling)LEGENDIGC — Integrated Gas Unit ControllerNOTE: Thermostat Fan Switch in the “AUTO”position.

56Fig. 60 — EconoMi$erIV Functional View

57INDEXAir quality limits 40Altitude compensation 12Burner section 12Burner spark gap 47Carrier Comfort Network® 19Charging chart, refrigerant 45Clear

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.Cata

6Fig. 4 — Base Unit Dimensions — 48TM016,020

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.Cata

7Fig. 5 — Base Unit Dimensions — 48TM025

8Fig. 6 — Base Unit Dimensions — 48TM028

9Table 1 — Physical DataLEGEND*The ZRU140KC compressor is a tandem compressor, consisting of a ZR72KC (25% totalcapacity) and a ZR68KC (24% total capa