Manuals / Carrier / Household Appliance / Air Conditioner

Carrier 48TC**16 Adjust Factory-InstalledOptions, Install Accessories, Pre-Startand Start-Up

Models: 48TC**16

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Fig. 87 - EconoMi$ert IV Wiring

48TC**16

	Economizer	2 Position Damper	Unit Without Economizer or
			2 Position Damper

C10333

Fig. 87 - EconoMi$ert IV Wiring

Step 13 — Adjust Factory-Installed Options

Smoke Detectors —

Smoke detector(s) will be connected at the Central Terminal Board (CTB), at terminals marked “Smoke Shutdown”. Remove jumper JMP 3 when ready to energize unit.

EconoMi$er IV Occupancy Switch —

Refer to Fig. 87 for general EconoMi$er IV wiring. External occupancy control is managed through a connection on the Central Terminal Board.

If external occupancy control is desired, connect a time clock or remotely controlled switch (closed for Occupied, open for Unoccupied sequence) at terminals marked OCCUPANCY on CTB. Remove or cut jumper JMP 2 to complete the installation.

Step 14 — Install Accessories

Available accessories include:

Roof Curb (must be installed before unit)

Thru-base connection kit (must be installed before unit is set on curb)

Manual outside air damper

Barometric relief Power Exhaust

Differential dry-bulb sensor (EconoMi$er IV) Outdoor enthalpy sensor

Differential enthalpy sensor

Time Guard II compressor anti-cycle control Outdoor coil protector grille

Head pressure control Programmable setback thermostat Electrical/Mechanical thermostat and subbase Thermidistatt device

Humidistat Thermostat / Sensors CO2 sensor

DDC interface (PremierLink) Louvered hail guard

Phase monitor control

Refer to separate installation instructions for information on installing these accessories.

Pre-Start and Start-Up

Two-Position motorized outside air damper

EconoMi$er IV (with control and integrated barometric relief)

EconoMi$er2 (without control/for external signal and integrated barometric relief)

This completes the mechanical installation of the unit. Refer to the unit’s Service Manual for detailed Pre-Start and Start-up instructions.

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Carrier 48TC**16 Adjust Factory-InstalledOptions, Install Accessories, Pre-Startand Start-Up, EconoMi$ert IV Wiring

Contents

48TC**16 TABLE OF CONTENTSInstallation Instructions Single Package Rooftop48TC**16 SAFETY CONSIDERATIONSUNIT OPERATION AND SAFETY HAZARD FIRE, EXPLOSION HAZARDVertical Connections / Economizer Fig. 1 - Unit Dimensional Drawing – 16 Size Unit48TC**16 Horizontal Connections / EconomizerStep 1 — Plan for Unit Location INSTALLATIONFig. 2 - Service Clearance Dimensional Drawing Jobsite SurveyCurb-mountedinstallation — Step 2 - Plan for Sequence of Unit InstallationTable 1 – Operating Weights Pad-mountedinstallation —48TC**16 Fig. 3 - Roof Curb DetailsC10772 Fig. 4 - Unit Leveling Tolerances Step 5 — Field Fabricate DuctworkStep 6 — Rig and Place Unit PROPERTY DAMAGE HAZARDFig. 8 - Horizontal Conversion Panels Fig. 6 - Retrofit Installation DimensionsPositioning on Curb — 48TC**16Fig. 9 - Typical Access Panel Locations Step 8 — Install Outside Air HoodEconomizer Hood Removal and Setup Factory OptionFig. 14 - Economizer Filter Installation Step 9 — Install Flue HoodFig. 12 - Indoor Coil Access Panel Relocation Economizer Hood and Two-PositionHood —Table 2 – Natural Gas Supply Line Pressure Ranges Step 10 — Install Gas PipingFig. 16 - Gas Piping Guide EQUIPMENT DAMAGE HAZARDFig. 19 - Gas Line Piping OptionFig. 20 - Gas Piping Fig. 21 - Gas PipingFig. 23 - Orifice Hole FIRE OR EXPLOSION HAZARDFig. 24 - Condensate Drain Pan Side View Fig. 26 - Conduit into Factory Option Disconnect Field Power Supply —Step 12 — Make Electrical Connections Fig. 25 - Condensate Drain Piping DetailsUnits with Factory-InstalledDisconnect — Fig. 30 - Disconnect Switch and UnitUnits Without Factory-InstalledDisconnect — Fig. 29 - Mounting Position for Field DisconnectsELECTRICAL OPERATION HAZARD Fig. 31 - Power Wiring ConnectionsConvenience Outlets — Fig. 33 - Convenience Outlet Utilization NoticeELECTRICAL OPERATION HAZARD Fig. 34 - Unit Powered Convenience Outlet WiringFig. 35 - Weatherproof Cover Installation 48TC**16Electrical Connections— Field Control WiringFactory-Option Thru-BaseConnections Fig. 36 - Thru-the-BaseOption, Shipping PositionUnit without Thru-BaseConnection Kit — Fig. 39 - Thermostat Wire RoutingHeat Anticipator Settings — Fig. 38 - Typical Low-VoltageControl ConnectionsHumidi-MiZer- Space RH Controller Fig. 40 - Accessory Field-InstalledHumidistatHumidi-MiZerR Control Connections To connect the Carrier humidistat HL38MG029with EDGE Pro Thermidistat Device 48TC**16Fig. 44 - PremierLink Controller PremierLinkt Factory Option48TC**16 48TC**16 Fig. 46 - PremierLink Wiring SchematicC11202 48TC**16 C11203Outdoor Air Temperature OAT Sensor — Field ConnectionsSupply Air Temperature SAT Sensor — EconoMi$er2 —INPUT SIGNAL Table 4 - Space Sensor ModeTable 5 – Thermostat Mode INPUT SIGNALFig. 52 - PremierLink T-56Sensor Configure the unit for Thermostat Mode —Space Sensors — Connect Thermostat —Indoor Air Quality CO2 sensor 33ZCSENCO2 - Typical Wiring DiagramEconomizer Controls Fig. 55 - Indoor CO2 Sensor 33ZCSENCO2BLACK To wire the sensorTB3-7 TB3-13Supply Fan Status Switch Filter Status SwitchFig. 60 - PremierLink Filter Switch Connection Fig. 61 - PremierLink Wiring Fan Pressure SwitchTable 6 – Recommended Cables Connecting CCN BusCCN Communication Bus — Table 7 – Color Code RecommendationsFig. 65 - RTU Open Multi-ProtocolControl Board RTU Open Control System48TC**16 48TC**16 Fig. 67 - RTU Open System Control Wiring DiagramC11204 48TC**16 C1120548TC**16 Table 8 – RTU Open Controller Inputs and OutputsField Connections Supply Air Temperature SAT Sensor —Fig. 70 - RTU Open T-56Sensor Connections Space Temperature SPT SensorsFig. 69 - RTU Open T-55Sensor Connections Fig. 71 - Space Temperature Sensor Typical Wiring33ZCSENCO2 Connections Outdoor Air Quality Sensor Humidi-MiZerR Control Wiring In units equippedFig. 72 - RTU Open / Indoor CO2 Sensor Fig. 73 - RTU Open / Outdoor CO2 Sensor48TC**16 Connecting Discrete Inputs —Smoke Detector/Fire Shutdown FSD — Fig. 77 - RTU Open Address Switches Communication Wiring - ProtocolsFig. 76 - RTU Open SW3 Dip Switch Settings Fig. 78 - Network WiringP1 P1 Local AccessRTU Open Troubleshooting — P5 P5Table 9 – LEDs WiringOutdoor Air Enthalpy Control PNO 33CSENTHSW Differential Enthalpy Control —System — Fig. 81 - Controller AssemblySmoke Detectors Controller —Supply Air See “Completing Installation of Return Air SmokeSmoke Detector Locations LocationAdditional Application Data Fig. 85 - Return Air Detector Shipping PositionFig. 86 - Return Air Sensor Operating Position 48TC**16Legend and Notes for Table 48TC**16Fig. 87 - EconoMi$ert IV Wiring Step 13 — Adjust Factory-InstalledOptionsStep 14 — Install Accessories EconoMi$er IV Occupancy Switch —48TC**16 Catalog No: 48TC 48TC**1614SI Replaces: 48TC