Carrier 50TC Installation Instructions Manual
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Carrier 50TC Installation Instructions Manual

Single package rooftop, 50hz cooling only sizes 07, 08, 09, and 12 with puronr (r-410a) refrigerant
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50TC
Single Package Rooftop, 50Hz
Cooling Only
Sizes 07, 08, 09, and 12
with Puronr (R---410A) Refrigerant
NOTE:
This manual discusses only the mechanical
Installation of this unit. Star- - up procedures, operating
sequences and service instructions are included in a
separate Service/Maintenance manual which is not
included with this unit. Other manuals may be required
for specific factory- - installed options.
Read through the entire installation instruction manual
before starting the installation, to familiarize yourself with
all steps and to identify additional reference materials
required.
Contact your local Carrier representative for additional
service reference materials.

TABLE OF CONTENTS

SAFETY CONSIDERATIONS

INSTALLATION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Step 1 - - Plan for Unit Location
Step 2 - - Plan for Sequence of Unit Installation
Step 3 - - Inspect Unit
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Step 4 - - Provide Unit Support
Step 5 - - Field Fabricate Ductwork
Step 6 - - Rig and Place Unit
Step 7 - - Convert to Horizontal & Connect Ductwork 11
Step 8 - - Install Outside Air Hood
Step 9 - - Install External Condensate Trap and Line
Step 10 - - Make Electrical Connections
Step 11 - - Adjust Factory- - Installed Options
Step 12 - - Install Accessories
Installation Instructions
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SAFETY CONSIDERATIONS
Improper installation, adjustment, alteration, service,
maintenance, or use can cause explosion, fire, electrical
shock or other conditions which may cause personal
injury or property damage. Consult a qualified installer,
service agency, or your distributor or branch for
information or assistance. The qualified installer or
agency must use factory- - authorized kits or accessories
when modifying this product. Refer to the individual
instructions packaged with the kits or accessories when
installing.
Follow all safety codes. Wear safety glasses and work
gloves. Use quenching cloths for brazing operations and
have a fire extinguisher available. Read these instructions
thoroughly and follow all warnings or cautions attached to
1
the unit. Consult local building codes for special
6
requirements.
In
recommended that the USA standard ANSI/NFPA 70,
6
National Electrical Code (NEC), be followed.
7
It is important to recognize safety information. This is the
7
safety- - alert symbol
7
unit and in instructions or manuals, be alert to the
10
potential for personal injury.
11
Understand the signal words DANGER, WARNING,
CAUTION, and NOTE. These words are used with the
safety- - alert symbol. DANGER identifies the most serious
11
hazards which will result in severe personal injury or
13
death. WARNING signifies hazards which could result in
13
personal injury or death. CAUTION is used to identify
unsafe practices, which may result in minor personal
35
injury or product and property damage. NOTE is used to
35
highlight suggestions which will result in enhanced
installation, reliability, or operation.
absence
of
local
codes,
. When you see this symbol on the
it
is

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  • Page 1 Read through the entire installation instruction manual before starting the installation, to familiarize yourself with all steps and to identify additional reference materials required. Contact your local Carrier representative for additional service reference materials. TABLE OF CONTENTS SAFETY CONSIDERATIONS ....
  • Page 2 WARNING ELECTRICAL SHOCK HAZARD Failure to follow this warning could cause personal injury or death. Before performing service or maintenance operations on unit, always turn off main power switch to unit and install lockout tag. Unit may have more than one power switch.
  • Page 3 Vertical Connections / Economizer Horizontal Connections / Economizer C09447 Fig. 1 - - Unit Dimensional Drawing – 07 Size Units...
  • Page 4 C09448 Fig. 1 - - Unit Dimensional Drawing – 07 Size Unit (cont.)
  • Page 5 Vertical Connections / Economizer Horizontal Connections / Economizer C09450 Fig. 2 - - Unit Dimensional Drawing – 08, 09 and 12 Size Units...

  • Page 6: Installation

    Fig. 2 - - Unit Dimensional Drawing – 08, 09 and 12 Size Units (cont.) INSTALLATION Jobsite Survey Complete the following checks before installation. 1. Consult local building codes or the U.S.A. National Electrical Code (Ref: ANSI/NFPA 70, [American National Standards Institute/National Fire Protection Association], latest revision) for special installation requirements.

  • Page 7: Step 2 - - Plan For Sequence Of Unit Installation

    50TC --- Component Base Unit Economizer Vertical Horizontal Curb 356 mm/14--- in 610 mm/24--- in Step 2 — Plan for Sequence of Unit Installation The support method used for this unit will dictate different sequences for the steps of unit installation. For example, on curb- - mounted units, some accessories must be installed on the unit before the unit is placed on the curb.
  • Page 8 Fig. 4 - - Roof Curb Details – 07 Size Units ROOFCURB UNIT SIZE ACCESSORY 1’-2” CRRFCURB001A01 [356] 50TC-A07 2’-0” CRRFCURB002A01 [610] NOTES: 1. Roof curb accessory is shipped disassembled. 2. Insulated panels. 3. Dimensions in [ ] are in millimeters.
  • Page 9 ROOFCURB UNIT SIZE ACCESSORY 1’ - 2” CRRFCURB003A01 [356] 50TC-*08 50TC-*08 – – 12 2’ - 0” CRRFCURB004A01 [610] Fig. 5 - - Roof Curb Details – 08 — 12 Size Units C09453...

  • Page 10: Step 5 - - Field Fabricate Ductwork

    87 Pa (0.35 in. wg) with economizer or 112 Pa (0.45 in. wg) without economizer. 914-1371 “B” (36"-54") “C” “A” MAX WEIGHT UNIT 50TC-A07 50TC-D08 1410 50TC-D09 1525 50TC-D12 1565 NOTES: 1. Dimensions in ( ) are in inches.

  • Page 11: Step 8 - - Install Outside Air Hood

    Step 6 — Rig and Place Unit Keep unit upright and do not drop. Spreader bars are not required if top crating is left on unit. Rollers may be used to move unit across a roof. Level by using unit frame as a reference.
  • Page 12 Fig. 10 - - Economizer Parts, Shipping Location Two Position Damper Hood Removal and Setup - - Factory Option 1. The hood is shipped in knock- - down form and assembled to a metal support tray using plastic stretch wrap. Located in the return air compartment, the assembly’s metal tray is attached to the basepan and also attached to the damper using two plastic tie- - wraps.

  • Page 13: Step 9 - - Install External Condensate Trap And Line

    5. Open the filter clips which are located underneath the hood top. Insert the aluminum filter into the bottom filter rack (hood divider). Push the filter into position past the open filter clips. Close the filter clips to lock the filter into place. See Fig. 14. DIVIDER OUTSIDE CLEANABLE...
  • Page 14 The unit is factory wired for the voltage shown on ;the nameplate. Refer to the unit label diagram for additional information. WARNING FIRE HAZARD Failure to follow this warning could result in intermittent operation or performance satisfaction. Do not connect aluminum wire between disconnect switch and air conditioning unit..
  • Page 15 This device can be a thermostat (field- - supplied) or a PremierLink controller (available as factory- - installed option or as field- - installed accessory, for use on a Carrier Comfort Network or as a stand alone control) or the...
  • Page 16 Carton and packing materials Installation sheet Electric Heaters 50TC units may be equipped with field- - installed accessory electric heaters. Each heater is a pre- - assembled module, with heater frames holding open coil resistance wires strung through ceramic insulators, line- - break limit switches and two control contactors for two- - stage heating control.
  • Page 17 Single Point Box installation instructions for details on tap connections. All fuses on 50TC units are 60- - A. (Note that all heaters are qualified for use with a 60- - A fuse, regardless of actual heater ampacity, so only 60- - A fuses are necessary.)
  • Page 18 Supply Temperature (SAT) FIOP- - equipped 50TC unit, the unit is supplied with a supply- - air temperature (SAT) sensor (33ZCSENSAT). This sensor is a tubular probe type, approx 152 mm (6- - inches) in length. It is a nominal 10- - k ohm thermistor.
  • Page 19 C09460 Fig. 29 - - PremierLink Wiring Schematic...
  • Page 20 Sensors factory- - shipped configured for Space Sensor Mode. A Carrier T- - 55 or T- - 56 space sensor must be used. T- - 55 space temperature sensor provides a signal of space temperature to the PremierLink control. T- - 56 provides...
  • Page 21 IAQ ---COM/OAQ ---COM/RH ---COM OAQ ---SEN/RH ---SEN CCN Gnd (WHT) LEGEND: --- Space Temperature Sensor --- Space Temperature Sensor --- Carrier Comfort Network (communication bus) CMPSAFE --- Compressor Safety FILTER --- Dirty Filter Switch TB1 TERMINAL IAQ ---COM/OAQ ---COM/RH ---COM...
  • Page 22 Y2, W1, W2 and G terminals to PremierLink TB1 as C08201 shown in Fig. 34. If the 50TC unit is equipped with factory- - installed smoke detector(s), disconnect the factory BLU lead at TB1- - 6 (Y2) before connecting the thermostat. Identify the BLU lead originating at CTB- - DDC- - 1;...
  • Page 23 When the PremierLink is configured for Thermostat Mode, these functions are not available: Fire Shutdown (FSD), Remote Occupied (RMTOCC), Compressor Safety (CMPSAFE), Supply Fan Status (SFS), and Filter Pressure Switch (FILTER). Economizer controls — Outdoor Air Enthalpy Control (PNO HH57AC077) - - The enthalpy control (HH57AC077) is available as a field- - installed accessory to be used with the EconoMi$er2 damper system.
  • Page 24 (4 to 20 mA) and ground (SIG COM) terminals on the OAQ sensor. See Fig. 37. Connect the 4 to 20 mA terminal to the TB1- - 13 terminal of the 50TC. Connect the SIG COM terminal to the TB1- - 11 terminal of the 50TC.
  • Page 25 Space Relative Humidity Sensor — The RH sensor is not C08216 used with these 50Hz 50TC models at this time. CCN Communication Bus — The PremierLink controller connects to the bus in a daisy chain arrangement. Negative pins on each component must be connected to...
  • Page 26 NOTE: Conductors and drain wire must be at least 20 AWG, stranded, and tinned copper. Individual conductors must be insulated with PVC, PVC/nylon, vinyl, Teflon, or polyethylene. An aluminum/polyester 100% foil shield and an outer jacket of PVC, PVC/nylon, chrome vinyl, or Teflon with a minimum operating temperature range of - - 20_C to 60_C (- - 4_F to 140_F) is required.
  • Page 27 RTU-MP Board Fig. 46 - - 50TC Control Box Component Locations The RTU- - MP control is factory- - mounted in the 50TC unit’s main control box, to the left of the CTB. See Fig. 46. Factory wiring is completed through harnesses connected to the CTB.
  • Page 28 C09461 Fig. 47 - - RTU- - MP System Control Wiring Diagram...
  • Page 29 Supply Temperature (SAT) FIOP- - equipped 50TC unit, the unit is supplied with a supply- - air temperature (SAT) sensor (33ZCSENSAT). This sensor is a tubular probe type, approx 152 mm (6- - inches) in length. It is a nominal 10- - k ohm thermistor.
  • Page 30 Phoenix connectors and then reconnect the connectors to the board. Space Temperature (SPT) Sensors A field- - supplied Carrier space temperature sensor is required with the RTU- - MP to monitor space temperature. There are 3 sensors available for this application:...
  • Page 31 To wire the return air enthalpy sensor, perform the following: 1. Use a 2- - conductor, 18 or 20 AWG, twisted pair cable to connect the return air enthalpy sensor to the enthal- py controller. 2. At the enthalpy control remove the factory- - installed resistor from the (SR) and (+) terminals.
  • Page 32 Input 8 or 9 is recommended for easy of installation. Refer to Fig. 45 and Table 9 for wire terminations at J5. Space Relative Humidity Sensor - - The RH sensor is not used with these 50Hz 50TC models at this time. PROTOCOL BACnet MS/TP Unused...
  • Page 33 Local Access BACview Handheld The BACview is a keypad/display interface used to connect to the RTU- - MP to access the control information, read sensor values, and test the RTU, see Fig. 54. This is an accessory interface that does not come with the MP controller and can only be used at the unit.
  • Page 34 The LEDs on the RTU- - MP show the status of certain functions If this LED is on... Status is... Power The RTU MP has power The RTU MP is receiving data from the network segment The RTU MP is transmitting data over the network segment The digital output is active The Run and Error LEDs indicate control module and network status If Run LED shows...

  • Page 35: Step 11 - - Adjust Factory- - Installed Options

    Economizer Step 11 — Adjust Factory- -Installed Options EconoMi$er IV Occupancy Switch — Refer to Fig. 55 for general EconoMi$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.
  • Page 36 TYPE CRHEATER***A00 CRHEATER106A00 CRHEATER108A00 CRHEATER109A00 CRHEATER108A00,108A00 CRHEATER108A00,109A00 CRHEATER106A00 CRHEATER108A00 HIGH CRHEATER109A00 CRHEATER108A00,108A00 CRHEATER108A00,109A00 CRHEATER116A00 CRHEATER113A00 CRHEATER114A00 CRHEATER115A00 CRHEATER114A00,116A00 CRHEATER116A00 CRHEATER113A00 CRHEATER114A00 CRHEATER115A00 CRHEATER114A00,116A00 CRHEATER116A00 CRHEATER113A00 HIGH CRHEATER114A00 CRHEATER115A00 CRHEATER114A00,116A00 NOTE: See page 38 for table legend and notes. Table 11 – Unit Wire/MOCP Sizing Data ELECTRIC HEATER (kW) 11.5...
  • Page 37 Table 11 – Unit Wire/MOCP Sizing Data (cont) TYPE CRHEATER***A00 CRHEATER116A00 CRHEATER113A00 CRHEATER114A00 CRHEATER115A00 CRHEATER114A00,116A00 CRHEATER116A00 CRHEATER113A00 CRHEATER114A00 CRHEATER115A00 CRHEATER114A00,116A00 CRHEATER116A00 CRHEATER113A00 HIGH CRHEATER114A00 CRHEATER115A00 CRHEATER114A00,116A00 CRHEATER116A00 CRHEATER113A00 CRHEATER115A00 CRHEATER114A00,116A00 CRHEATER115A00,113A00 CRHEATER116A00 CRHEATER113A00 CRHEATER115A00 CRHEATER114A00,116A00 CRHEATER115A00,113A00 CRHEATER116A00 CRHEATER113A00 HIGH CRHEATER115A00 CRHEATER114A00,116A00 CRHEATER115A00,113A00 NOTE: See page 38 for table legend and notes.
  • Page 38 Legend for Table 11 LEGEND: DISC --- Disconnect --- Full load amps --- Indoor fan motor --- Locked rotor amps --- Minimum circuit amps MOCP --- Maximum over current protection...
  • Page 40 Catalog No: 50TC ---C02SI Copyright 2009 Carrier Corp. D 7310 W. Morris St. D Indianapolis, IN 46231 Printed in U.S.A. Edition Date: 11/09 Replaces: NEW Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

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50tc series50tc-a0750tc-d0850tc-d1250tc-d09

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