Carrier 48HC- User Manual

Page 2 - SAFETY CONSIDERATIONS; WARNING

2 Field Connections 39 . . . . . . . . . . . . . . . . . . . . . . . . . . Space Temperature (SPT) Sensors 40 . . . . . . . . . . . . Indoor Air Quality (CO 2 ) Sensor 40 . . . . . . . . . . . . . Outdoor Air Quality Sensor 41 . . . . . . . . . . . . . . . . . Space Relative Humidity Sensor or Humid...

Page 9 - INSTALLATION; Jobsite Survey; Step 1 — Plan for Unit Location; NOTE

9 INSTALLATION Jobsite Survey Complete the following checks before installation. 1. Consult local building codes and the NEC (National Electrical Code) ANSI/NFPA 70 for special installa- tion requirements. 2. Determine unit location (from project plans) or select unit location. 3. Check for possible...

Page 10 - Roof Curb Mount —; Ductwork must be attached to curb and

10 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. Review the followin...

Page 14 - MAXIMUM ALLOWABLE; Step 5 — Field Fabricate Ductwork; Do not connect ductwork to unit.; PROPERTY DAMAGE HAZARD; Step 6 — Rig and Place Unit; UNIT DAMAGE HAZARD; CAUTION; DETAIL A

14 A-B 0.25” (6) B-C 0.5” (12) A-C 0.5” (12) MAXIMUM ALLOWABLE DIFFERENCE IN. (MM) A B C C10628 Fig. 9 -- Unit Leveling Tolerances Step 5 — Field Fabricate Ductwork Cabinet return-air static pressure (a negative condition) shall not exceed 0.5 in. wg (87 Pa) with economizer or without economizer. Fo...

Page 15 - Positioning on Curb —; gas regulators, and gas relief equipment. Minimum distance; Step 7 — Horizontal Duct Connection; Supply; Step 8 — Install Outside Air Hood — Factory; To remove the hood parts package:

15 Positioning on Curb — Position unit on roof curb so that the following clearances are maintained: 1 / 4 in. (6 mm) clearance between the roof curb and the base rail inside the right and left, 1 / 2 in. (12 mm) clearance between the roof curb and the base rail inside the front and back. This will ...

Page 16 - Step 9 — Install Flue Hood and Combustion Air; Step 10 — Install Gas Piping; For natural gas applications, gas pressure at unit gas; Gas Supply Line —

16 To assemble the outside air hood: 1. Remove hood top panel from shipping position on unit end. 2. Install four angles to the upper end panel using the screws provided. 3. Apply seal strip to mating flanges on the side plates of the hood (see Fig. 14). Apply Seal Stripsto the back of these flanges...

Page 17 - Table 2 – Typical; Table 3 – Natural Gas Supply Line Pressure Ranges

17 Table 2 – Typical 3 / 4 --in NPT Field Supplied Piping Parts Item Qty CPN Description 1 1 CA15RA201 90 Deg Street Elbow 2 1 CA01CA226 5 Inch Long Nipple 3 1 CA85RA201 Ground --- Joint Union 4 1 CA01CA218 3 Inch Long Nipple 5 1 CA05RA201 90 Deg Elbow 6 1 CA01CA250 12 Inch Long Nipple 7 1 CA05RA201...

Page 19 - All units must have an external trap for condensate; Step 12 — Make Electrical Connections; ELECTRICAL SHOCK HAZARD; Do not use gas piping as an electrical ground.; DETAIL

19 Step 11 — Install External Condensate Trap and Line The unit has one 3 / 4 -in. condensate drain connection on the end of the condensate pan (see Fig. 21). See Figs. 1, 2 and 3, item “E”, in the view labeled “BACK (HORIZONTAL DISCHARGE)” for the location of the condensate drain connection. CONDEN...

Page 20 - Units Without Disconnect Option

20 FIRE HAZARD Failure to follow this warning could result in intermittent operation or unsatisfactory performance.Do not connect aluminum wire between disconnect switch and air conditioning unit. Use only copper wire. (See Fig. 24.) ! WARNING COPPER WIRE ONLY ELECTRIC DISCONNECT SWITCH ALUMINUM WIR...

Page 22 - Field Control Wiring —

22 2.0 50HE501288 NOTICE/AVIS Convenience Outlet Utilization Maximum Intermittent Use 15 - Amps Maximum Continuous Use 8 - Amps Observe a 50% limit on the circuit Loading above 8 - Amps Utilisation de la prise utilitaire Usage intermittent maximum 15 - Amps Usage continu maximum 8 - Amps Observez un...

Page 23 - Central; Failure to follow this caution may cause a short circuit.; to be connected to a 208-v power supply, the control

23 C W2 G W1 R Y1 TypicalThermostatCorrections O/B/Y2 (see Note) Note: Typical multi-function marking. Follow manufacturer’s configuration instructions to select Y2. Field Wiring Central Terminal Board W1 Y2 Y1 R W2 G C X W1 Y2 Y1 R W2 G C X T – S TAT SeeCaution UNIT DAMAGE HAZARD Failure to follow ...

Page 24 - Control Connections

24 Humidi--MiZer R Control Connections Humidi--MiZer – Space RH Controller —NOTE : The Humidi--MiZer is a factory installed option. The Humidi--MiZer dehumidification system requires a field--supplied and --installed space relative humidity control device. This device may be a separate humidistat co...

Page 25 - Adaptive Dehumidification System Humidistat Wiring; with EDGE Pro Thermidistat Device

25 C11139 Fig. 34 -- Typical Humidi--MiZer R Adaptive Dehumidification System Humidistat Wiring Rc Rh W1 G Y2 C O/W2/B Y1 OAT RRS SRTN HUM D1D2 V+ Vg X* C G W2 W1 Y2 Y1 R EDGE Pro THERMIDISTAT Unit CTB THERMOSTAT *Connection not required. Humidi-MiZer™ FIOP C09298 Fig. 35 -- Typical Rooftop Unit wit...

Page 26 - PremierLink

26 PremierLink t (Factory--Option) C08199 Fig. 36 -- PremierLink Controller The PremierLink controller (see Fig. 36) 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 func...

Page 29 - Field Connections; Table 4 – PremierLink Sensor Usage; NOTES

29 Supply Air Temperature (SAT) Sensor — On FIOP--equipped 48HC unit, the unit is supplied with a supply--air temperature (SAT) sensor (33ZCSENSAT). This sensor is a tubular probe type, approx 6--inches (12.7 mm) in length. It is a nominal 10--k ohm thermistor. The SAT is factory--wired. The SAT pro...

Page 31 - Space Sensors —; SEN; SET; Connect Thermostat —

31 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 signal plus ...

Page 32 - Economizer Controls; COVER REMOVED

32 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 and without ...

Page 33 - Sensor Connections; UNIT PERFORMANCE HAZARD; Io; Humidistat connections:

33 J5-2 J5-3 13 11 TB3 TB3 OAQ Sensor PL 24 VAC 4-20mA SIG COM C11157 Fig. 49 -- Outdoor CO 2 Sensor Connections Space Relative Humidity Sensor or Humidistat Connections —Space Relative Humidity Sensor connections: The accessory space relative humidity sensor (33ZCSENSRH-01) is installed on an inter...

Page 34 - CTB

34 Smoke Detector/Fire Shutdown (FSD) — This function is available only when PremierLink is configured for (Space) Sensor Mode. The unit is factory--wired for PremierLink FSD operation when PremierLink is factory--installed. On 48HC units equipped with factory--installed Smoke Detector(s), the smoke...

Page 35 - CCN Bus

35 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 likewise, positive pins on each component must be connected to respective positive pins. The controller signal pi...

Page 36 - RTU Open Control System

36 RTU Open Control System The RTU Open control is factory--mounted in the 48HC unit’s main control box, to the right of the CTB. See Fig. 37. Factory wiring is completed through harnesses connected to the CTB. Field connections for RTU Open sensors will be made at the Phoenix connectors on the RTU ...

Page 39 - Table 9 – RTU Open Controller Inputs and Outputs

39 Table 9 – 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 oa_temp AI ...

Page 40 - Indoor Air Quality (CO

40 to the RTU Open. Connect to the wires to the removable Phoenix connectors and then reconnect the connectors to the board. Space Temperature (SPT) Sensors — There are two types of SPT sensors available from Carrier, resistive input non-communicating (T55, T56, and T59) and Rnet communicating (SPS,...

Page 42 - Relative Humidity Sensor; Connecting Discrete Inputs —

42 Relative Humidity Sensor (Polarized Male Connector) J4-1 or J4-4 + 24 VDC Supply Voltage J4-2 or J4-5 (-) 4 to 20 mA Current Loop Output to RTU-OPEN 4-20 VAC GND 0-5V mA or or VDC 0-10V SPAN ZERO C10839 Fig. 66 -- Duct Relative Humidity Sensor Typical Wiring Humidistat: The accessory humidistat p...

Page 43 - RTU Open Controller Integration Guide; SW3 Protocol Selection; PROTOCOL; Baud Rate Selections; BAUD RATE

43 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 different ap...

Page 44 - Cable; Handheld Connections

44 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. 70. This is an accessory interface that does not come with the RTU Open controller and can only be used ...

Page 45 - RTU Open; Outdoor Air Enthalpy Control; Differential Enthalpy Control —

45 Table 10 – LEDs The LEDs on the RTU Open Control Board (see Fig. 57) 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 digital ou...

Page 46 - Wiring; Smoke Detectors; Return Air Sensor Tube Installation –

46 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. 72 -- Outside and Return Air Enthalpy Sensor Wiring To wire the return air enthal...

Page 48 - : See page 49 for table legend and notes.

48 Table 11 -- Unit Wire/Fuse or HACR Breaker Sizing Data (cont) UN IT NOM. V --- Ph --- Hz IFM TYPE COMBUSTION FAN MOTOR POWER EXHAUST w/ PWRD C.O. NO P.E. w/ P.E. (pwrd fr/ unit) FLA FLA MCA FUSE or HACR BRKR DISC. SIZE MCA FUSE or HACR BRKR DISC. SIZE FLA LRA FLA LRA 48H C *D 17 208/230 --- 3 ---...

Page 49 - Legend and Notes for Table 11; IMPORTANT

49 Legend and Notes for Table 11 LEGEND: BRKR --- Circuit breaker CO --- Convenience outlet DISC --- Disconnect FLA --- Full load amps LRA --- Locked rotor amps MCA --- Minimum circuit amps PE --- Power exhaust PWRD CO --- Powered convenient outlet UNPWR CO --- Unpowered convenient outlet NOTES : 1....

Page 50 - IV Wiring; Step 13 — Adjust Factory--Installed Options; EconoMi$er IV Occupancy Switch —; Step 14 — Install Accessories

50 Economizer 2 Position Damper Unit Without Economizer or2 Position Damper C10645 Fig. 76 -- EconoMi$er t IV Wiring Step 13 — Adjust Factory--Installed Options EconoMi$er IV Occupancy Switch — Refer to Fig. 76 for general EconoMi$er IV wiring. External occupancy control is managed through a connect...

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