Table of Contents
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NOTE: Read the entire instruction manual before starting the
installation.
TABLE OF CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . 1
AND DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Rated Indoor Airflow (cfm) . . . . . . . . . . . . . . . . . . . 2
INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
JOBSITE SURVEY . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Step 1 - Plan for Unit Location . . . . . . . . . . . . . . 6
Unit Installation . . . . . . . . . . . . . . . . . . . . . . . . . 6
Step 3 - Inspect Unit . . . . . . . . . . . . . . . . . . . . . . . 7
Step 4 - Provide Unit Support . . . . . . . . . . . . . . . . 7
Step 5 - Field Fabricate Ductwork . . . . . . . . . . . . 9
Step 6 - Rig and Place Unit . . . . . . . . . . . . . . . . . . 9
Ductwork. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Step 8 - Install Outside Air Hood . . . . . . . . . . . . 11
Step 9 - Units with Hinged Panels Only . . . . . . . 12
Step 11 -Make Electrical Connections . . . . . . . 13
Electric Heaters . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53500199-01
Installation Instructions
Printed in U.S.A.
Form 50KC-4-6-02SI
Single Package Rooftop Cooling Only
with Puron
• SINGLE POINT BOXES AND SUPPLEMENTARY
®
Control and Power Wiring Diagrams . . . . . . . . . .18
®
Smoke Detectors . . . . . . . . . . . . . . . . . . . . . . . . . .38
PremierLink™ Controller (Factory Option) . . . . .38
RTU Open Controller (Factory-Installed
Option). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
Controller Options . . . . . . . . . . . . . . . . . . . . . . . . .38
Step 13 - Install Accessories. . . . . . . . . . . . . . . .39
Step 14 - Check Belt Tension . . . . . . . . . . . . . . .39
Evaporator Coil Metering Devices . . . . . . . . . . . .40
Pre-Start and Startup . . . . . . . . . . . . . . . . . . . . . . .40
UNIT START-UP CHECKLIST. . . . . . . . . . . . . . CL-1
SAFETY CONSIDERATIONS
Improper installation, adjustment, alteration, service, mainte-
nance, 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 quali-
fied installer or agency must use factory-authorized kits or
accessories when modifying this product. Refer to the indi-
vidual 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 the unit. Con-
sult local building codes and appropriate national electrical
codes (in USA, ANSI/NFPA70, National Electrical Code
(NEC); in Canada, CSA C22.1) for special requirements.
It is important to recognize safety information. This is the
safety-alert symbol
unit and in instructions or manuals, be alert to the potential
for personal injury.
Understand the signal words DANGER, WARNING, CAU-
TION, and NOTE. These words are used with the safety-alert
symbol. DANGER identifies the most serious hazards which
will result in severe personal injury or death. WARNING sig-
nifies hazards which could result in personal injury or death.
CAUTION is used to identify unsafe practices, which may
result in minor personal injury or product and property dam-
age. NOTE is used to highlight suggestions which will result
in enhanced installation, reliability, or operation.
Pg 1
50KC04-06
®
(R-410A) Refrigerant
. When you see this symbol on the
11-18
Replaces: 50KC-4-6-01SI
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Related Manuals for Carrier 50KC*A/B06 Series
Summary of Contents for Carrier 50KC*A/B06 Series
-
Page 1: Table Of Contents
50KC04-06 Single Package Rooftop Cooling Only with Puron ® (R-410A) Refrigerant Installation Instructions NOTE: Read the entire instruction manual before starting the • SINGLE POINT BOXES AND SUPPLEMENTARY FUSES installation. • SINGLE POINT BOXES WITHOUT FUSES • LOW-VOLTAGE CONTROL CONNECTIONS TABLE OF CONTENTS ®... -
Page 2: Model Number Nomenclature
MODEL NUMBER NOMENCLATURE AND DIMENSIONS WARNING See Fig. 1 for 50KC model number nomenclature. See Fig. 2 ELECTRICAL SHOCK HAZARD for unit dimensional drawings. Figure 3 shows service clear- ance dimensions. Failure to follow this warning could cause personal injury or death. -
Page 3: Kc*A/B05
11 12 13 15 16 17 18 Packaging and Seismic Compliant 0 = Standard 1 = LTL Unit Heat Type 50 – Cooling with Electric Heat Electrical Options A = None C = Non-Fused Disconnect Series/Model D = Thru-The-Base Connections KC –... -
Page 4: Kc*A/B06
Fig. 2 — Dimensional Drawing... - Page 5 Fig. 2 — Unit Dimensional Drawing (cont)
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Page 6: Installation
LOCATION DIMENSION CONDITION 48-in. (1219 mm) Unit disconnect is mounted on panel 18-in. (457 mm) No disconnect, convenience outlet option 18-in. (457) mm Recommended service clearance 12-in. (305 mm) Minimum clearance 42-in. (1067 mm) Surface behind servicer is grounded (e.g., metal, masonry wall) 36-in. -
Page 7: Curb-Mounted Installation
Table 2 — Operating Weights UNITS LB (KG) UNITS LB (KG) UNITS LB (KG) 50KC Base Unit 445 (201) 499 (226) 552 (250) Economizer Vertical 50 (23) 50 (23) 50 (23) Horizontal 80 (36) 80 (36) 80 (36) Humidi-MiZer ® System 50 (23) 50 (23) - Page 8 Fig. 5 — Roof Curb Details...
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Page 9: Step 5 - Field Fabricate Ductwork
Step 5 — Field Fabricate Ductwork Step 6 — Rig and Place Unit Cabinet return-air static pressure (a negative condition) shall Keep unit upright and do not drop. Spreader bars are re- not exceed 0.35-in. wg (87 Pa) with economizer or 0.4-in. wg quired. -
Page 10: Step 7 - Convert To Horizontal And Connect
Fig. 6 — Rigging Label Step 7 — Convert to Horizontal and Connect REMOVABLE HORIZONTAL Ductwork (when required) RETURN DUCT OPENING COVER Unit is shipped in the vertical duct configuration. Unit with- out factory-installed economizer or return-air smoke detector option may be field-converted to horizontal ducted configura- tion. -
Page 11: Step 8 - Install Outside Air Hood
FILTER ACCESS PANEL NOTCHES NOTCHES BASEPAN COMPRESSOR ACCESS PANEL OUTDOOR-AIR OPENING AND INDOOR COIL ACCESS PANEL Fig. 8 — Location of Notches Fig. 10 — Typical Access Panel Locations Locate the 2 screws holding the metal tray to the basepan SCREWS and remove. -
Page 12: Step 9 - Units With Hinged Panels Only
PANEL DIVIDER OUTSIDE HOOD CLEANABLE ALUMINUM FILTER FILTER PANEL CAULK HERE BAROMETRIC INDOOR INDOOR RELIEF COIL COIL FILTER ACCESS ACCESS CLIP PANEL PANEL Fig. 14 — Economizer Filter Installation Fig. 12 — Indoor Coil Access Panel Relocation Step 9 — Units with Hinged Panels Only Swing out indoor coil access panel and insert the hood Relocate latch shipped inside the compressor compartment sides under the panel (hood top). -
Page 13: Step 11 -Make Electrical Connections
The piping for the condensate drain and external trap can be IFC (see wiring diagram label for control box component ar- completed after the unit is in place. See Fig. 17. rangement) or at factory-installed option non-fused discon- nect switch. Max wire size is #2 AWG (copper only). See Fig. -
Page 14: Units With Factory-Installed Non-Fused Disconnect
UNITS WITH FACTORY-INSTALLED NON-FUSED DIS- CONNECT The factory-installed option non-fused disconnect (NFD) switch is located in a weatherproof enclosure located under the main control box. The manual switch handle and shaft are shipped in the disconnect enclosure. Assemble the shaft and handle to the switch at this point. -
Page 15: Convenience Outlets
CONVENIENCE OUTLETS Remove the blank cover plate at the convenience outlet; dis- card the blank cover. Loosen the two screws at the GFCI duplex outlet, until ap- WARNING proximately -in. (13 mm) under screw heads are exposed. Press the gasket over the screw heads. Slip the backing plate ELECTRICAL OPERATION HAZARD over the screw heads at the keyhole slots and align with the gasket;... -
Page 16: Factory-Option Thru-Base Connections
8 amps. proper line voltage or excessive phase imbalance constitutes abuse and may cause damage to electrical components. Such NOTICE operation would invalidate any applicable Carrier warranty. Example: Supply voltage is 230-3-60 Convenience Outlet Utilization AB = 224 v... -
Page 17: Field Control Wiring
The 50KC unit requires an external temperature control de- vice. 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 RTU Open Con-... -
Page 18: Electric Heaters
Electric Heaters DISCONNECT EMT OR RIGID CONDUIT SINGLE CENTER MANUAL RESET The 50KC units may be equipped with field-installed acces- MOUNTING (FIELD-SUPPLIED) POINT BOX POST LIMIT SWITCH LOCATION sory electric heaters. The heaters are modular in design, with HEATER COVERS heater frames holding open coil resistance wires strung through ceramic insulators, line-break limit switches and a control contactor. -
Page 19: Fuses
D2 for dehumidification operation (see Fig. 37). The dry contacts must be wired between CTB terminal R and the PINK lead to the LTLO switch with field-supplied wire nuts. Refer to the installation instructions included with the Carrier Edge Thermidistat device for more informa- tion. - Page 20 % RELATIVE HUMIDITY Fig. 34 — Accessory Field-Installed Humidistat ® Fig. 35 — Edge Pro Thermidistat Fig. 36 — Typical Humidi-MiZer Adaptive Dehumidification System Humidistat Wiring...
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Page 21: Control And Power Wiring Diagrams
EDGE Pro THERMIDISTAT Unit CTB THERMOSTAT O/W2/B SRTN Humidi-MiZer™ FIOP *Connection not required. Fig. 37 — Typical Rooftop Unit with Humidi-MiZer Adaptive Dehumidification System with EDGE Pro Thermidistat Device Control and Power Wiring Diagrams See Fig. 38-44. - Page 22 Fig. 38 — Electro-Mechanical Control Wiring Diagram...
- Page 23 Fig. 39 — Electro-Mechanical Control Wiring Diagram with Humidi-MiZer ® System...
- Page 24 Fig. 40 — Electro-Mechanical Power Wiring...
- Page 25 Fig. 41 — PremierLink™ Wiring Schematic...
- Page 26 ® Fig. 42 — PremierLink™ Wiring Schematic with Humidi-MiZer System...
- Page 27 Fig. 43 — RTU Open System Control Wiring Diagram...
- Page 28 ® Fig. 44 — RTU Open System Control Wiring Diagram with Humidi-MiZer System...
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Page 29: Economi$Er ® X (Factory-Installed Option)
User Interface ® Economi$er X (Factory Option) Provides status for normal operation, setup parameters, The EconoMi$er X system is an expandable economizer con- checkout tests, and alarm and error conditions with a 2-line trol system, which includes a W7220 economizer module 16 character LCD display and four button keypad. - Page 30 Storage Temperature Table 5 — Economizer Module - Right Hand –40°F to 150°F (–40°C to 65°C) Terminal Blocks Shipping Temperature LABEL TYPE DESCRIPTION –40°F to 150°F (–40°C to 65°C) Top Right Terminal Blocks Relative Humidity AUX2 I 24 vac IN The first terminal is not used.
- Page 31 • Press the ▼ (Down arrow) button to move to the next Table 6 — HH57AC081 Sensor Wiring menu. Terminations • Press the (Enter) button to display the first item in the currently displayed menu. TERMINAL TYPE DESCRIPTION NUMBER LABEL S-BUS Communications S-BUS...
- Page 32 Setup and Configuration Before being placed into service, the W7220 Economizer IMPORTANT: Table 8 illustrates the complete hierar- module must be set up and configured for the installed chy. Your menu parameters may be different depending system. on your configuration. For example if you do not have a DCV (CO ) sensor, IMPORTANT: During setup, the economizer module is...
- Page 33 Table 8 — Menu Structure* PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE AND NOTES † VALUE INCREMENT FIRST STAGE COOLING DEMAND (Y1–IN) ECONO AVAIL YES/NO YES = economizing available; the system can use outside air for free cool- ing when required FIRST STAGE COOLING RELAY OUTPUT ECONOMIZING YES/NO...
- Page 34 Table 8 — Menu Structure* (cont) PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE AND NOTES † VALUE INCREMENT SUPPLY AIR SETPOINT 38 to 65 F; increment MAT SET Setpoint determines where the economizer will modulate the OA damper by 1 to maintain the mixed air temperature. COMPRESSOR LOW TEMPERATURE LOCKOUT -45 to 80 F;...
- Page 35 Table 8 — Menu Structure* (cont) PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE AND NOTES † VALUE INCREMENT INSTALL 01/01/10 Display order = MM/DD/YY Setting order = DD, MM, then YY. UNITS DEG F or C Sets economizer controller in degrees Fahrenheit or Celsius EQUIPMENT CONV Conventional or HP...
- Page 36 Table 8 — Menu Structure* (cont) PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE AND NOTES † VALUE INCREMENT DAMPER MINIMUM POSI- The checkout for the damper minimum position is based on the system. TION DAMPER OPEN Position damper to the full open position. Exhaust fan contacts enable during the DAMPER OPEN test.
- Page 37 Table 8 — Menu Structure* (cont) PARAMETER PARAMETER MENU PARAMETER DEFAULT RANGE AND NOTES † VALUE INCREMENT SHUTDOWN ACTIVE AUX2 IN is programmed for SHUTDOWN and 24 V has been applied to AUX2 IN terminal. DMP CAL RUNNING DAMPER CALIBRATION ROUTINE RUNNING If DCV Auto enable has been programmed, when the W7220 is complet- ing a calibration on the dampers, this alarm will display.
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Page 38: Smoke Detectors
Completing Installation of Return Air Smoke Sensor: Smoke Detectors Unscrew the two screws holding the return-air smoke Smoke detectors are available as factory-installed options on 50KC models. Smoke detectors may be specified for supply- detector assembly. See Fig. 51, Step 1. Save the screws. air only or for return-air without or with economizer, or in Turn the assembly 90 degrees and then rotate end to end. -
Page 39: Step 12 - Adjust Factory-Installed Options
® Fig. 52 — EconoMi$er IV Wiring Refer to separate installation instructions for information on Step 12 — Adjust Factory-Installed Options installing these accessories. SMOKE DETECTORS Step 14 — Check Belt Tension Smoke detector(s) will be connected at the Controls Connec- Measure the belt span length as shown in Fig. -
Page 40: Evaporator Coil Metering Devices
BLOWER PULLEY V-BELT MOTOR PULLEY MOTOR BELT DEFLECTION FORCE (LBS) BELT SMALLEST UNNOTCHED CROSS SHEAVE NOTCHED BELTS BELTS SECTION DIAMETER MOUNTING USED USED MOTOR MOUNTING BOLTS (4) 3.0-3.6 PLATE A, AX 3.8-4.8 5.0-7.0 Fig. 54 — Belt Drive Motor Mounting 3.4-4.2 —... - Page 41 ACCUTROL NOTE: Each feeder tube in the liquid header has a metering device. Fig. 55 — 50KC*A,B Sizes 04-05 Metering Devices...
- Page 42 ACCURATER NOTE: Each feeder tube in the liquid header has a metering device. ACCUTROL Fig. 56 — 50KC*A,B Sizes 06 Dual Metering Devices...
- Page 43 Fig. 57 — TXV (Metering Device) Position in Reheat Coil (Typical Diagram for Sizes 04-06)
- Page 46 © Carrier Corporation 2018 Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53500199-01 Printed in U.S.A. Form 50KC-4-6-02SI Pg 46 11-18 Replaces: 50KC-4-6-01SI...
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Page 47: Unit Start-Up Checklist
UNIT START-UP CHECKLIST (REMOVE AND USE FOR JOB FILE) NOTE: To avoid injury to personnel and damage to equipment or property when completing the procedures listed in this start-up checklist, use good judgment, follow safe practices, and adhere to the safety considerations/information as outlined in preced- ing sections of this Installation Instruction document. - Page 48 10. Restore set-points for thermostat and humidistat (Y/N) _____ REPEAT PROCESS FOR 2 COMPRESSOR SYSTEMS. © Carrier Corporation 2018 Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53500199-01 Printed in U.S.A.
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