Page 2 - Instructions continued on page 11.; For horizontal return applications: The power exhaust and baro-; ACCESSORY; Horizontal Adapter
2 INSTALLATION Inspect unit for transportation damage. If damage is found, file any claim with the transportation agency. Step 1 — Provide Unit Support ROOF CURB — Assemble and install accessory roof curb orhorizontal adapter roof curb in accordance with instructionsshipped with this accessory. See ...
Page 5 - Fig. 3 — Rigging Details
5 NOTES: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 rigging.4. Rig by inserting hooks into unit base rails as shown. Use corner post from packaging to protect coil from damage. Use bumper boards for sp...
Page 9 - Table 1 — Physical Data
9 Table 1 — Physical Data LEGEND *The ZRU140KC compressor is a tandem compressor, consisting of a ZR72KC (25% total capacity) and a ZR68KC (24% total capacity). †Circuit 1 uses the lower portion of the condenser coil and lower portion of the evaporator coils; and Circuit 2 uses the upper portion of ...
Page 11 - are obtained from field-supplied; Fig. 9 — Concentric Duct Details
11 Step 3 — Field Fabricate Ductwork — Secure all ducts to building structure. Use flexible duct connectors be-tween unit and ducts as required. Insulate and weatherproof allexternal ductwork, joints, and roof openings with counterflashing and mastic in accordance with applicable codes. Ducts passin...
Page 12 - Step 7 — Orifice Change —; This unit is factory as-; *As the height above sea level increases, there is less oxygen per
12 Step 7 — Orifice Change — This unit is factory as- sembled for heating operation using natural gas at an elevationfrom sea level to 2000 ft. This unit uses orifice typeLH32RFnnn, where “nnn” indicates the orifice size based ondrill size diameter in thousands of an inch.HIGH ELEVATION (Above 2000 ...
Page 13 - VOLTAGE; LEGEND; Fig. 15 — Field Power Wiring Connections; EQUIP —; Equipment; GND; Ground; NEC; National Electrical Code; TB; Terminal Block; Fig. 14 — Field Gas Piping
13 Step 8 — Install Gas Piping — Unit is equipped for use with natural gas. Installation must conform with localbuilding codes or, in the absence of local codes, with theNational Fuel Gas Code, ANSI Z223.1. Install field-supplied manual gas shutoff valve with a 1 / 8 -in. NPT pressure tap for test g...
Page 14 - THERMOSTAT ASSEMBLY; Fig. 16 — Field Control Thermostat Wiring
14 OPTIONAL NON-FUSED DISCONNECT — On units withthe optional non-fused disconnect, incoming power will bewired into the disconnect switch. Refer to Fig. 17 for wiringfor 100 and 200 amp disconnect switches. Units with anMOCP (maximum overcurrent protection) under 100 will usethe 100 amp disconnect s...
Page 15 - Table 5 — Electrical Data
15 Table 5 — Electrical Data LEGEND *Fuse or HACR circuit breaker. NOTES: 1. In compliance with NEC requirements for multimotor and combination load equipment (refer to NEC Ar ticles 430 and 440), the overcurrent pro-tective device for the unit shall be fuse or HACR breaker. Canadian unitsmay be fus...
Page 16 - Step 11 — Install Outdoor-Air Hood; Section Details
16 Step 10 — Make Outdoor-Air Inlet Adjust-ments MANUAL OUTDOOR-AIR DAMPER — All units (exceptthose equipped with a factory-installed economizer) have amanual outdoor-air damper to provide ventilation air. Damper can be preset to admit up to 25% outdoor air into return-air compartment. To adjust, lo...
Page 17 - Step 12 — Install All Accessories —; Accessory 0° F Low Ambient Kit —; Fig. 22 — Wind Baffle Details; Fig. 23 — Motormaster® I Sensor Locations
17 Step 12 — Install All Accessories — After all the factory-installed options have been adjusted, install all field-installed accessories. Refer to the accessory installationinstructions included with each accessory.MOTORMASTER® I CONTROL INSTALLATION (48TM016,020, and 028)Install Field-Fabricated ...
Page 18 - Fig. 24 — Motormaster® V Control
18 MOTORMASTER® V CONTROL INSTALLATION (48TM025 Only)Install Field-Fabricated Wind Baffles — Wind baffles mustbe field-fabricated for all units to ensure proper cooling cycleoperation at low ambient temperatures. See Fig. 22 for baffledetails. Use 20-gage, galvanized sheet metal, or similarcorrosion...
Page 19 - Step 13 — Adjust Factory-Installed Options; Fig. 25 — PremierLink Controller
19 Step 13 — Adjust Factory-Installed Options PREMIERLINK™ CONTROL — The PremierLink control-ler is available as a special order from the factory and iscompatible with the Carrier Comfort Network® (CCN) sys-tem. This control is designed to allow users the access and abil-ity to change factory-define...
Page 20 - PremierLink
20 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 26 25 1 SA T OA T RED WHT RED BLU YEL VIO BRN ORN BRN BLK BRN BLUE ECONO NOT USED RELA YS RED RED RED RED RED RED R Y1 Y2 W1 W2 G C X ORN GRN PNK BRN RED RED RED RED BRN BRN RED BLU ORN PNK WHT BLU YEL GRN R Y1 Y2 W1 W2 G FIELD THERMOST...
Page 21 - dry; AND; dry bulb
21 Table 8 — PremierLink™ Sensor Usage *PremierLink control requires supply air temperature sensor 33ZCSENSAT and outdoor air temperature sensor HH79NZ039 — Included with factory-installed PremierLink control;field-supplied and field-installed with field-installed PremierLink control. NOTES: 1. CO 2...
Page 22 - *Used with Differential Enthalpy Control only.
22 Fig. 27 — Enthalpy Switch/Receiver Dimensions (33CSENTHSW) Fig. 28 — Enthalpy Sensor Dimensions (33CSENTSEN) Fig. 29 — Typical Wiring Schematic — Carrier Rooftop Unit with PremierLink™ Controls *Used with Differential Enthalpy Control only.
Page 23 - Fig. 30 — Differential Enthalpy Control Wiring
23 DIFFERENTIAL ENTHALPY CONTROL (Fig. 30) —Differential enthalpy control requires both an enthalpy switch/receiver (33CSENTHSW) and an enthalpy sensor (33CSENTSEN). The enthalpy switch/receiver is mounted inthe outdoor air inlet and calculates outdoor air enthalpy. Theenthalpy sensor is mounted in ...
Page 24 - Sensor and Mounting Plate (33AMKITENT006); MOUNTING PLATE; Fig. 31 — Outdoor and Return Air Sensor Wiring
24 The mode jumper should be set to M3 for 4 to 20 mA output. The factory test jumper should remain on OFF or theenthalpy sensor will not calculate enthalpy.ENTHALPY SENSORS AND CONTROL — The enthalpycontrol (HH57AC077) is supplied as a field-installed accessoryto be used with the EconoMi$er2 damper...
Page 25 - CFM
25 Outdoor air leakage is shown in Table 9. Return air pressure drop is shown in Table 10. Table 9 — Outdoor Air Damper Leakage Table 10 — Return Air Pressure Drop (in. wg) ECONOMI$ERIV STANDARD SENSORSOutdoor Air Temperature (OAT) Sensor — The outdoor airtemperature sensor (HH57AC074) is a 10 to 20...
Page 26 - RUN
26 LEGEND DCV — Demand Controlled Ventilation IAQ — Indoor Air Quality LALS — Low Temperature CompressorLockout Switch OAT — Outdoor-Air Temperature POT — Potentiometer Potentiometer Default Settings:Power Exhaust Middle Minimum Pos. Fully Closed DCV Max. Middle DCV Set Middle Enthalpy C Setting NOT...
Page 29 - Fig. 41 — Enthalpy Changeover Set Points; Sensor Maximum Range Setting
29 Typically the maximum ventilation rate will be about 5 to 10% more than the typical cfm required per person, usingnormal outside air design criteria. A proportional anticipatory strategy should be taken with the following conditions: a zone with a large area, varied occu-pancy, and equipment that...
Page 30 - Sensor Standard Settings
30 In order to have the CO 2 sensor control the economizer damper in this manner, first determine the damper voltage out-put for minimum or base ventilation. Base ventilation is theventilation required to remove contaminants during unoccu-pied periods. The following equation may be used to determine...
Page 31 - Fig. 45 — Typical MoistureMi$er Dehumidification; CB; Circuit Breaker; LLSV —; Liquid Line Solenoid Valve; LPS; TRAN —; Transformer
31 Step 14 — Install Humidistat for OptionalMoistureMi$er™ Package — MoistureMi$er dehu- midification package operation can be controlled by fieldinstallation of a Carrier-approved humidistat. To install thehumidistat perform the following procedure: 1. Locate humidistat on a solid interior wall in ...
Page 32 - Fig. 46 — MoistureMi$erTM Dehumidification Operation Diagram; TXV; Thermostatic Expansion Valve
32 Fig. 46 — MoistureMi$er™ Dehumidification Operation Diagram TXV — Thermostatic Expansion Valve
Page 33 - Unit Preparation —; must
33 START-UP Use the following information and Start-Up Checklist on page CL-1 to check out unit PRIOR to start-up. Unit Preparation — Check that unit has been installed in accordance with these installation instructions and all applica-ble codes.COMPRESSOR MOUNTING — Compressors are internal-ly spri...
Page 34 - Refer to page 39 for general Fan Performance Data notes.; Brake Horsepower
34 Table 14 — Fan Performance — 48TMD016 (Low Heat Units)* LEGEND *Standard low-medium static drive range is 873 to 1021 rpm. Alter- nate high-static drive range is 1025 to 1200. Other rpms require afield-supplied drive. Refer to page 39 for general Fan Performance Data notes. NOTE: Maximum continuo...
Page 39 - GENERAL NOTES FOR FAN PERFORMANCE DATA TABLES
39 Table 20 — Fan Performance — 48TMD028 (Low Heat Units)* LEGEND *Standard low-medium static drive range is 1066 to 1283 rpm. Alternate high- static drive range is 1332 to 1550. Other rpms require a field-supplied drive. Refer to this page for general Fan Performance Data notes. NOTE: Maximum conti...
Page 41 - Operating Sequence; Routine 1
41 Operating Sequence COOLING, UNITS WITHOUT ECONOMIZER — Whenthermostat calls for cooling, terminals G and Y1 are energized.The indoor (evaporator) fan contactor (IFC), compressor con-tactor no. 1 (C1) and outdoor-fan contactor (OFC) are ener-gized, and evaporator-fan motor, compressor no. 1, and b...
Page 43 - Fig. 49 — Removing Heat Exchanger Ceramic
43 HEATING, UNIT WITH ECONOMI$ER2, PREMIERLINKCONTROL AND A ROOM SENSOR — Every 40 secondsthe controller will calculate the required heat stages (maximumof 3) to maintain supply air temperature (SAT) if the followingqualifying conditions are met:• Indoor fan has been on for at least 30 seconds.• COO...
Page 44 - Multifak 2; and Adjustment; -in. bolt and threaded plate are included in the
44 FAN SHAFT BEARINGS — Lubricate bearings at leastevery 6 months with suitable bearing grease. Extended greaseline is provided for far side fan bearing (opposite drive side).Typical lubricants are given below: *Preferred lubricant because it contains rust and oxidation inhibitors. CONDENSER AND EVA...
Page 45 - Do not manually operate economizer; Refrigerant Charge —; BOTH CIRCUITS; Fig. 54 — Cooling Charging Chart
45 Belt Tension Adjustment — To adjust belt tension: 1. Loosen fan motor bolts. 2. Turn motor jacking bolt to move motor mounting plate up or down for proper belt tension ( 3 / 8 in. deflection at midspan with one finger [9 lb force]). 3. Tighten nuts.4. Adjust bolts and nut on mounting plate to sec...
Page 47 - Fig. 56 — Spark Gap Adjustment
47 Diagnostic IGC Control LEDs — The IGC board has LEDs for diagnostic purposes. Refer to Troubleshootingsection on page 51. Optional Hinged Access Doors — When the optional service package is ordered or the if the hinged access doorsoption is ordered, the unit will be provided with external andinte...
Page 49 - Fig. 58 — Typical Component Arrangement
Page 50 - LEGEND AND NOTES FOR FIG. 57 AND 58
50 AHA — Adjustable Heat Anticipator C — Contactor, Compressor CAP — Capacitor CB — Circuit Breaker CC — Cooling Compensator CH — Crankcase Heater CLO — Compressor Lockout COMP — Compressor Motor CR — Control Relay DM — Damper Motor DU — Dummy Terminal EQUIP — Equipment FPT — Freeze Protection Therm...
Page 52 - Remove jumper from P to P1. Reconnect device at P and; Table 27 — Cooling Service Analysis; TXV —
52 7. Remove jumper from TR to N.8. Remove jumper from TR to 1.9. Remove 5.6 kilo-ohm resistor from T and T1. Reconnect wires at T and T1. 10. Remove jumper from P to P1. Reconnect device at P and P1. 11. Apply power (24 vac) to terminals TR and TR1. Table 27 — Cooling Service Analysis LEGEND TXV — ...
Page 53 - Table 28 — Heating Service Analysis
53 Table 28 — Heating Service Analysis LEGEND GR — Ground Table 29 — MoistureMi$er™ Dehumidification Subcooler Service Analysis PROBLEM CAUSE REMEDY Burners Will NotIgnite. Misaligned spark electrodes. Check flame ignition and sensor electrode positioning.Adjust as needed. No gas at main burners. Ch...
Page 54 - Table 30 — EconoMi$erIV Input/Output Logic
54 Table 30 — EconoMi$erIV Input/Output Logic *For single enthalpy control, the module compares outdoor enthalpy to the ABCD set point. †Power at N terminal determines Occupied/Unoccupied setting: 24 vac (Occupied), no power (Unoccupied). **Modulation is based on the supply air sensor signal. ††Modu...
Page 55 - IGC —; Integrated Gas Unit Controller
55 Fig. 59 — IGC Control (Heating and Cooling) LEGEND IGC — Integrated Gas Unit Controller NOTE: Thermostat Fan Switch in the “AUTO”position.
Page 57 - INDEX
57 INDEX Air quality limits 40 Altitude compensation 12 Burner section 12 Burner spark gap 47 Carrier Comfort Network® 19 Charging chart, refrigerant 45 Clearance 6-8 CO 2 sensor Configuration 30 Settings 29, 30 Combustion blower wheel 43 Compressor Lockout 25, 46 Lubrication 43 Mounting 33 Rotation...
Page 58 - SERVICE TRAINING; Packaged Service Training
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53480016-01 Printed in U.S.A. Form 48TM-4SI Pg 58 3-06 Replaces: 48TM-3SI Book 1 4 Tab 1a 6a Copyright 2006 Carrier Cor poration SERVICE T...
Page 60 - ELECTRICAL
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53480016-01 Printed in U.S.A. Form 48TM-4SI Pg CL-1 3-06 Replaces: 48TM-3SI Book 1 4 Tab 1a 6a Copyright 2006 Carrier Cor poration - -- --...