Carrier 50TCQA- User Manual

7 A-B 0.5” (13) B-C 1.0” (25) A-C 1.0” (25) MAXIMUM ALLOWABLE DIFFERENCE IN. (MM) C06110 Fig. 4 -- Unit Leveling Tolerances Step 5 — Field Fabricate Ductwork Cabinet return-air static pressure (a negative condition) shall not exceed 0.35 in. wg (87 Pa) with economizer or 0.45 in. wg (112 Pa) without...

8 Positioning on Curb — Position unit on roof curb so that the following clearances are maintained: 1 / 4 in. (6.4 mm) clearance between the roof curb and the base rail inside the front and rear, 0.0 in. clearance between the roof curb and the base rail inside on the duct end of the unit. This will ...

9 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 usin...

10 Economizer Hood and Two--Position Hood —NOTE : If the power exhaust accessory is to be installed on the unit, the hood shipped with the unit will not beused and must be discarded. Save the aluminum filter for use in the power exhaust hood assembly. 1. The indoor coil access panel will be used as ...

11 NOTE: Trap should be deep enough to offset maximum unit static difference. A 4” (102) trap is recommended . MINIMUM PITCH 1” (25mm) PER 10’ (3m) OF LINE BASE RAIL OPEN VENT TO ROOF DRAIN DRAIN PLUG ROOF CURB SEE NOTE 2 ˝ (51) MIN C08022 Fig. 14 -- Condensate Drain Piping Details All units must ha...

12 Units with Factory--Installed Disconnect — The factory--installed option disconnect switch is located in a weatherproof enclosure located under the main control box. The manual switch handle is accessible through an opening in the access panel. Discard the factory test leads (see Fig. 16). Units ...

15 RACEWAY HOLE IN END PANEL (HIDDEN) C08027 Fig. 22 -- Field Control Wiring Raceway Electric Heaters 50TCQ units may be equipped with field--installed accessory electric heaters. The heaters are modular in design, with heater frames holding open coil resistance wires strung through ceramic insulato...

16 TRACK FLANGE C08135 Fig. 25 -- Typical Module Installation Single Point Boxes and Supplementary Fuses — When the unit MOCP device value exceeds 60--A, unit--mounted supplementary fuses are required for each heater circuit. These fuses are included in accessory Single Point Boxes, with power distr...

17 PremierLink t (Factory--Option) — C08199 Fig. 28 -- PremierLink Controller The PremierLink controller (see Fig. 28) is compatible with Carrier Comfort Network r (CCN) devices. This control is designed to allow users the access and ability to change factory--defined settings, thus expanding the fu...

20 G J4-12 J4-10 J4-8 Y1 Y2 2 R R 4 6 J4-6 J4-4 W2 C 8 10 C SPACETHERMOSTAT PL CTBTHERMOSTAT W1 TB1 CTBTHERMOSTAT C08119 Fig. 35 -- Space Thermostat Connections Table 3 – PremierLink Sensor Usage APPLICATION OUTDOOR AIR TEMPERATURE SENSOR RETURN AIR TEMPERATURE SENSOR OUTDOOR AIR ENTHALPY SENSOR RET...

23 8 7 6 5 4 3 2 1 2 1 H G 24 VAC OR 24 VDC NC ALARMRELAYCONTACTS COMNO } 0-10VDCSIG COM 4-20mA + + - + - J3 J4 C08635 Fig. 38 -- Indoor/Outdoor Air Quality (CO 2 ) Sensor (33ZCSENCO2) -- Typical Wiring Diagram To accurately monitor the quality of the air in the conditioned air space, locate the sen...

24 On 50TCQ units equipped with factory--installed Smoke Detector(s), the smoke detector controller implements the unit shutdown through its NC contact set connected to the unit’s CTB input. The FSD function is initiated via the smoke detector’s Alarm NO contact set. The PremierLink communicates the...

25 At any baud (9600, 19200, 38400 baud), the number of controllers is limited to 239 devices maximum. Bus length may not exceed 4000 ft, with no more than 60 total devices on any 1000--ft section. Optically isolated RS--485 repeaters are required every 1000 ft. NOTE : Carrier device default is 9600...

28 Table 8 – RTU--MP Controller Inputs and Outputs POINT NAME BACnet OBJECT NAME TYPE OF I/O CONNECTION PIN NUMBERS INPUTS Space Temperature Sensor sptsens AI (10K Thermistor) J20 --- 1, 2 Supply Air Temperature sat AI (10K Thermistor) J2 --- 1, 2 Local Outside Air Temperature Sensor oatsens AI (10K...

29 The raceway provides the UL required clearance between high-- and low--voltage wiring. Pass the control wires through the hole provided in the corner post, then feed the wires thorough the raceway to the RTU--MP. Connect to the wires to the removable Phoenix connectors and then reconnect the conn...

30 enthalpy sensor and the (SR) terminal on the enthalpy controller. NOTE : The enthalpy control must be set to the “D” setting for differential enthalpy control to work properly.Indoor Air Quality (CO 2 sensor) — The indoor air quality sensor accessory monitors space carbon dioxide (CO 2 ) levels. ...

31 Remote Occupancy The remote occupancy accessory is a field--installed accessory. This accessory overrides the unoccupied mode and puts the unit in occupied mode. When installing this accessory, the unit must be configured for remote occupancy by setting MENU → Config → Inputs → input 3, 5, 8, or ...

32 Local Access BACview 6 Handheld The BACview 6 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. 57. This is an accessory interface that does not come with the MP controller and can only be used at the uni...

33 Table 9 – LEDs 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 Rx The RTU MP is receiving data from the network segment Tx The RTU MP is transmitting data over the network segment DO# The digital output is active The Run an...

34 terminal for connecting to the controller. Each sensor has four LEDs (for Power, Trouble, Alarm and Dirty) and a manual test/reset button (on the left--side of the housing). Duct smoke sensor controller Fastener (2X) Controller cover Conduit nuts (supplied by installer) Conduit support plate Cove...

35 downward, into the return air stream. The sampling tube is connected via tubing to the return air sensor that is mounted on a bracket high on the partition between return filter and controller location. (This sensor is shipped in a flat--mounting location. Installation requires that this sensor b...

36 Table 10 – Unit Wire/MOCP Sizing Data UN IT N O M .V --- P H --- H Z IFM TYPE ELECTRIC HEATER NO C.O. or UNPWRD C.O. Nom (kW) FLA NO P.E. w/ P.E. (pwrd fr/unit) MCA MOCP DISC. SIZE MCA MOCP DISC. SIZE FLA LRA FLA LRA 50T C Q *0 4 208/ 230 --- 1 --- 60 STD --- --- 30.7 45 30 121 32.6 50 32 123 3.3...

44 Legend and Notes for Table 10 LEGEND: CO --- Convenient outlet DISC --- Disconnect FLA --- Full load amps IFM --- Indoor fan motor LRA --- Locked rotor amps MCA --- Minimum circuit amps MOCP --- Maximum over current protection PE --- Power exhaust UNPWR CO --- Unpowered convenient outlet NOTES : ...

45 Step 12 — Install Accessories Available accessories include: Roof CurbThru--base connection kit (must be installed before unit is set on curb)Manual outside air damperTwo--Position motorized outside air damperEconoMi$er IV (with control and integrated barometric relief)EconoMi$er2 (without contro...