Carrier 50TC- User Manual

50TC -- D 14 Step 5 — Field Fabricate Ductwork Cabinet return-air static pressure (a negative condition) shall not exceed 87 Pa (0.5 in. wg) with economizer or without economizer. For vertical ducted applications, secure all ducts to roof curb and building structure. Do not connect ductwork to unit....

50TC -- D 15 "B" "C" "A" DETAIL A SEE DETAIL A PLACE ALL SEAL STRIP IN PLACE BEFORE PLACING UNIT ON ROOF CURB. DUCT END 1371 mm (54") MINIMUM C11378 UNIT MAX WEIGHT DIMENSIONS A B C KG LB MM IN MM IN MM IN 50TC --- D17 1011 2228 3249 127.8 1491 58.7 1328 52.3 50TC --- D20...

50TC -- D 16 Step 8 — Install Outside Air Hood — Factory Option The outside air hood for factory--option economizer and two--position damper is shipped in knock--down form and requires field assembly. The panel for the hood top is shipped on the end of the unit (see Fig. 12). The remaining parts for...

50TC -- D 17 Step 9 — Check Pulley Alignment and Belt Tension Pulley Alignment — The motor pulley is an adjustable--pitch type that allows implementation of changes in fan wheel speed to match as--installed ductwork systems. The pulley consists of a fixed flange side that faces the motor (secured to...

50TC -- D 18 Step 10 — Install External Condensate Trap and Line The unit has one 19 mm (3 / 4 -in.) condensate drain connection on the end of the condensate pan (see Fig. 18). See Figs. 1, 2 and 3, item “E”, in the view labeled “BACK (HORIZONTAL DISCHARGE W/O ECON)” for the location of the condensa...

50TC -- D 19 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. Use only copper wire. (See Fig. 21.) ! WARNING COPPER WIRE ONLY ELECTRIC DISCONNECT SWITCH ALUM...

50TC -- D 20 Factory--Option Thru--Base Connections — All units are equipped with the ability to bring utilities through the base. The electrical entrance is located in the control box area can can be accessed through the control box access panel. An embossed area is provided with three knock outs. ...

50TC -- D 21 Heat Anticipator Settings — Set heat anticipator settings at 0.14 amp for the first stage and 0.14 amp for second--stage heating. Rubber Grommet Corner Post Wire Ties Thru the Base Connection C10734 Fig. 24 -- Field Control Wiring Raceway Electric Heaters 50TC--D units may be equipped w...

50TC -- D 22 PremierLink t (Factory--Option) C08199 Fig. 29 -- PremierLink Controller The PremierLink controller (see Fig. 29) 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 expandin...

50TC -- D 24 Supply Air Temperature (SAT) Sensor — On FIOP--equipped 50TC--D 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. The SAT is factory--wired....

50TC -- D 26 Space Sensors — The PremierLink controller is 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 same space temperature si...

50TC -- D 27 Economizer Controls Indoor Air Quality (CO 2 ) Sensor — The indoor air quality sensor accessory monitors space carbon dioxide (CO 2 ) levels. This information is used to monitor IAQ levels. Several types of sensors are available, for wall mounting in the space or in return duct, with an...

50TC -- D 29 Space Relative Humidity Sensor — The RH sensor is not used with 50Hz 50TC--D 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 respective negative pins, and likew...

50TC -- D 30 RTU Open Control System The RTU Open control is factory--mounted in the 50DC*D unit’s main control box, to the right of the CTB. See Fig. 30. Factory wiring is completed through harnesses connected to the CTB. Field connections for RTU Open sensors will be made at the Phoenix connectors...

50TC -- D 32 Table 8 – RTU Open Controller Inputs and Outputs POINT NAME BACnet OBJECT NAME TYPE OF I/O CONNECTION PIN NUMBER(S) DEDICATED INPUTS Space Temp / Zone Temp zone_temp AI (10K Thermistor) J20 --- 1, 2 Supply Air Temperature sa_temp AI (10K Thermistor) J2 --- 1, 2 Outdoor Air Temperature o...

50TC -- D 33 Field Connections Field connections for accessory sensors and input devices are made the RTU Open, at plugs J1, J2, J4, J5, J11 and J20. All field control wiring that connects to the RTU Open must be routed through the raceway built into the corner post as shown in Fig. 24. The raceway ...

50TC -- D 35 Communication Wiring -- Protocols General — Protocols are the communication languages spoken by control devices. The main purpose of a protocol is to communicate information in the most efficient method possible. Different protocols exist to provide different kinds of information for di...

50TC -- D 36 Local Access — BACview 6 Handheld: The BACview 6 is a keypad/display interface used to connect to the RTU Open 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 RTU Open controller and can onl...

50TC -- D 37 Table 9 – LEDs The LEDs on the RTU Open Control Board (see Fig. 47) show the status of certain functions: If this LED is on... Status is... Power RTU Open has power Rx RTU Open is receiving data from the network segment Tx RTU Open is transmitting data over the network segment DO# The d...

50TC -- D 38 GRA BLK RED – 4-20 Main + VDC Out – 4-20 Main Out + 24-36 VDC In LOW GND 24V 7 PL6-1 (24-V) PL6-4 (COM) Outside AirEnthalpy Switch Return AirEnthalpySensor CTB ECON(P’LINK: to J4-2) or(RTU Open: to J2-6) C11161 Fig. 59 -- Outside and Return Air Enthalpy Sensor Wiring To wire the return ...

50TC -- D 40 Table 10 – Unit Wire/Fuse or HACR Breaker Sizing Data UN IT N O M .V --- P h --- H Z IF M TY P E ELEC. HTR { P.E. NO P.E. w/ P.E. (pwrd fr/unit) CRHEATER***A00 Nom (kW) FLA FLA MCA FUSE or HACR BRKR DISC. SIZE MCA FUSE or HACR BRKR DISC. SIZE VERTICAL HORIZONTAL FLA LRA FLA LRA 50TC ---...

50TC -- D 41 Table 10 -- Unit Wire/Fuse or HACR Breaker Sizing Data (cont) UN IT N O M .V --- P h --- H Z IF M TY P E ELEC. HTR { P.E. NO P.E. w/ P.E. (pwrd fr/unit) CRHEATER***A00 Nom (kW) FLA FLA MCA FUSE or HACR BRKR DISC. SIZE MCA FUSE or HACR BRKR DISC. SIZE VERTICAL HORIZONTAL FLA LRA FLA LRA ...

50TC -- D 42 Economizer 2 Position Damper Unit Without Economizer or2 Position Damper C10645 Fig. 63 -- EconoMi$er t IV Wiring Step 12 — Adjust Factory--Installed Options EconoMi$er IV Occupancy Switch — Refer to Fig. 63 for general EconoMi$er IV wiring. External occupancy control is managed through...

50TC -- D 43 START-UP CHECKLIST (Remove and Store in Job File) I. PRELIMINARY INFORMATION MODEL NO.: SERIAL NO.: DATE: TECHNICIAN: II. PRE-START-UP (insert checkmark in box as each item is completed) j VERIFY THAT JOBSITE VOLTAGE AGREES WITH VOLTAGE LISTED ON RATING PLATE j VERIFY THAT ALL PACKAGING...