Carrier 50TC Series Installation Instruction

50TC
Single Package Rooftop Cooling Only with Puronr (R ---410A) Refrigerant Sizes 08, 12, and 14 with Novation
R
Coil
Installation Instructions
NOTE: Read the entire instruction manual before starting the installation.
TABLE OF CONTENTS
SAFETY CONSIDERATIONS 2....................
Rated Indoor Airflow (cfm) 3..................
INSTALLATION 8...............................
Jobsite Survey 8................................
Step 1 -- Plan for Unit Location 8..................
Roof Mount 8...............................
Step 2 -- Plan for Sequence of Unit Installation 8......
Curb--Mount Installation 9.....................
Pad--Mount Installation 9......................
Frame--Mount Installation 9....................
Step 3 -- Inspect Unit 9...........................
Step 4 -- Provide Unit Support 9...................
Roof Curb Mount 9..........................
Slab Mount (Horizontal Units Only) 9...........
Alternate Unit Support
(In Lieu of Curb or Slab Mount) 9..............
Step 5 -- Field Fabricate Ductwork 11...............
Step 6 -- Rig and Place Unit 12....................
Positioning on Curb 12.......................
Step 7 -- Convert to Horizontal and Connect Ductwork 12
Step 8 -- Install Outside Air Hood 12...............
Economizer and Two Position Damper Hood Package Removal and Setup — Factory Option 12..
Economizer Hood and Two--Position Hood 13.....
Step 9 -- Install External Condensate Trap and Line 14.
Step 10 -- Make Elec trical Connections 14...........
Field Power Supply 14........................
Units with Factory--Installed
Non--Fused Disconnect 15.....................
Units without Factory--Installed
Non--Fused Disconnect 16.....................
All Units 16................................
Convenience Outlets 16.......................
Factory--Option Thru--Base Connections 18.......
Units without Thru--Base Connections 18.........
Field Control Wiring 18.......................
Thermostat 18...............................
Unit without Thru--Base Connection Kit 18.......
Heat Anticipator Settings 19...................
Electric Heaters 19............................
Single Point Boxes and Supplementary Fuses 20...
Single Point Boxes without Fuses 20............
Low--Voltage Control Connections 20............
Humidi--MiZer
Humidi--MiZer System — Space RH Controller 21..
EconoMi$er
PremierLinkt (Factory--Installed Option) 23.......
Supply Air Temperature (SAT) Sensor 26.........
Outdoor Air Temperature (OAT) Sensor 26.......
EconoMi$er2 26.............................
Field Connections 26..........................
Space Sensors 28............................
Connect Thermostat 28.......................
Configure the Unit for Thermostat Mode 28......
Economizer Controls 29........................
Indoor Air Quality (CO
Outdoor Air Quality Sensor 29.................
Space Relative Humidity Sensor or
Humidistat Connections 30....................
Smoke Detector/Fire Shutdown (FSD) 30.........
Filter Status Switch 31........................
Supply Fan Status Switch 31...................
Remote Occupied Switch 31...................
Power Exha ust (output) 31.....................
CCN Communication Bus 31..................
RTU Open Controller System 33.................
Supply Air Temperature (SAT) Sensor 36.........
Outdoor Air Temperature (OAT) Sensor 36.......
EconoMi$er2 36.............................
R
System Control Connections 21....
R
X (Factory--Installed Option) 21......
)Sensor 29.............
2
Field Connections 37..........................
Space Temperature (SPT) Sensors 37............
Indoor Air Quality (CO
Outdoor Air Quality Sensor 38.................
Space Relative Humidity Sensor or Humidistat 38..
Smoke Detector/Fire Shutdown (FSD) 39.........
Connecting Discrete Inputs 39..................
Communication Wiring -- Protocols 40............
General 40.................................
Local Access 41..............................
RTU Open Controlle r Troubleshooting 41........
Outdoor Air Enthalpy Control 42.................
Differential Enthalpy Control 42................
Return Air Enthalpy Sensor 43.................
50TC
Smoke Detectors 43...........................
Step 11 -- Adjust Factory--Installe d Options 56........
Step 12 -- Install Accessories 56...................
Step 13 -- Check Belt Tension 57...................
START--UP CHECKLIST 59.......................
)Sensor 37.............
2
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. Re ad these instructions thoroughly and follow all warnings or cautions attached to the unit. Consult 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.
. When you see this symbol on the
!
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.
!
WARNING
UNIT OPERATION AND SAFETY HAZARD
Failure to follow this warning could cause personal injury, death and/or equipment damage.
Puronr (R--410A) refri gerant systems operate at higher pressures than standard R--22 systems. Do not use R--22 service e quipment or components on Puron refrigerant equipment.
!
WARNING
PERSONAL INJURY AND ENVIRONMENTAL HAZARD
Failure to follow this warning could cause personal injury or death.
Relieve pre ssure and recover all refrigerant before system repair or final unit disposal.
Wear safety glasses and gloves when handling refrigerants. Keep torches and other ignition sources away from refrigerants and oils.
!
CAUTION
CUT HAZARD
Failure to follow this caution may result in personal injury.
Sheet metal parts may have sharp edges or burrs. Use care and wear appropriate protective clothing, safety glasses and gloves when handling parts and servicing air conditioning equipment.
Understand the signal words DANGER, WARNING, CAUTION, 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 signifies 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 damage. NOTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation.
2
Rated Indoor Airflow (cfm)
The table to the right lists the rated indoor airflow used for the AHRI efficiency rating for the units covered in thi s document.
Model Number Full Load Airflow (cfm)
50TC*A08 2400
50TC*D/E08 2250
50TC*A09 3000
50TC*D/E09 3400
50TC*A12 3600
50TC*D/E12 3000
50TC*D/E14 3600
Position:
Example:
1234567891011 12 13 14 15 16 50TC-A08A1A5-0A0A 0
Unit Heat Type
50 - Electric Heat Packaged Rooftop
Model Series - WeatherMaker
®
TC - Standard Efficiency
Heat Options
- = No Heat
Refrig. Systems Options
A = Standard One Stage Cooling Models (sizes 08-12) D = Two Stage Cooling Models E = Two Stage Cooling Models with Al/Cu Condenser Coils and Humidi-MiZer
®
Cooling Tons
08 = 7.5 tons 09 = 8.5 tons 12 = 10 tons 14 = 12.5 tons
Sens or Options
A = None B = RA Smoke Detector C = SA Smoke Detector D = RA + SA Smoke Detector E = CO
2
F = RA Smoke Detector and CO G = SA Smoke Detector and CO H = RA + SA Smoke Detector and CO
2
2
2
Indoor Fan Options
1 = Standard Static Option 2 = Medium Static Option 3 = High Static Option
Coil Options – RTPF (Outdoor - Indoor - Hail Guard)
A = Al/Cu - Al/Cu B = Precoat Al/Cu - Al/Cu C = E-coat Al/Cu - Al/Cu D = E-coat Al/Cu - E-coat Al/Cu E = Cu/Cu - Al/Cu F = Cu/Cu - Cu/Cu M = Al/Cu -Al/Cu — Louvered Hail Guard N = Precoat Al/Cu - Al/Cu — Louvered Hail Guard P = E-coat Al/Cu - Al/Cu — Louvered Hail Guard Q = E-coat Al/Cu - E-coat Al/Cu — Louvered Hail Guard R = Cu/Cu - Al/Cu — Louvered Hail Guard S = Cu/Cu - Cu/Cu — Louvered Hail Guard
Coil Options – Novation
®
(Outdoor - Indoor - Hail Guard)
G = Al/Al - Al/Cu H = Al/Al - Cu/Cu J = Al/Al - E-coat Al/Cu K = E-coat Al/Al - Al/Cu L = E-coat Al/Al - E-coatAl/Cu T = Al/Al - Al/Cu — Louvered Hail Guard U = Al/Al - Cu/Cu — Louvered Hail Guard V = Al/Al - E-coat Al/Cu — Louvered Hail Guard W = E-coat Al/Al - Al/Cu — Louvered Hail Guard X = E-coat Al/Al - E-coat Al/Cu — Louvered Hail Guard
Fig. 1 -- 50TC 08--12 Model Number Nomenclature (Example)
17 18
Packaging and Seismic Complience
0 = Standard 1 = LTL 3 = California Seismic Compliant Label 4 = LTL and CA Seismic Compliant Label
Electrical Options
A = None C = Non-Fused Disconnect D = Thru-The-Base Connections F = Non-Fused Disconnect and Thru-The-Base Connections G = 2-Speed Indoor Fan Controller (VFD) J = 2 Speed Indoor Fan Controller (VFD) and Non-Fused Disconnect K = 2-Speed Indoor Fan Controller (VFD) and Thru-The-Base Connections M = 2-Speed Indoor Fan Controller (VFD) with Non-Fused Disconnect and Thru-The-Base Connections
Service Options
0 = None 1 = Unpowered Convenience Outlet 2 = Powered Convenience Outlet 3 = Hinged Panels 4 = Hinged Panels and Unpowered Convenience Outlet 5 = Hinged Panels and Powered Convenience Outlet
Intake / Exhaust Options
A = None B = Temperature Economizer w/ Barometric Relief F = Enthalpy Economizer w/ Barometric Relief K = 2-Position Damper U = Temperature Ultra Low Leak Economizer w/ Barometric Relief W = Enthalpy Ultra Low Leak Economizer w/ Barometric Relief
Base Unit Controls
0 = Electromechanical Controls can be used with W7212 EconoMi$er
®
IV (Non-Fault Detection and Diagnostic) 1 = PremierLink™ Controller 2 = RTU Open Multi-Protocol Controller 6 = Electro-mechanical w/ 2-Speed Fan and W7220 Economizer Controller Controls. Can be used with W7220 EconoMi$er X (w/ Fault Detection and Diagnostic) D = ComfortLink Controls
Design Revision
- = Factory Design Revision
Voltage
1 = 575/3/60 5 = 208-230/3/60 6 = 460/3/60
50TC
C150007
3
50TC
Fig. 2 -- Unit Dimensional Drawing – 08, 09 and 12 Size Units
4
C10310A
50TC
Fig. 2 -- Unit Dimensional Drawing – 08, 09 and 12 Size Unit (cont.)
5
C10311A
50TC
Fig. 3 -- Unit Dimensional Drawing – 14 Size Unit
6
C09652A
50TC
Fig. 3 -- Unit Dimensional Drawing – 14 Size Unit (cont.)
7
C10327A
C
D
B
A
50TC
LOCATI ON DIMENSION CONDITION
48---in (1219 mm)
A
B
C
D
NOTE: Unit not designed to have overhead obstruction. Contact Application Engineering for guidance on any application
18---in (457 mm) 18---in (457) mm 12---in (305 mm)
42---in (1067 mm) 36---in (914 mm) Special
36---in (914 mm) 18---in (457 mm)
48---in (1219 mm) 42---in (1067 mm) 36---in (914 mm) Special
planning overhead obstruction or for vertical clearances.
Unit disconnect is mounted on panel No disconnect, convenience outlet option Recommended service clearance Minimum clearance
Surface behind servicer is grounded (e.g., metal, masonry wall) Surface behind servicer is electrically non - -- conductive (e.g., wood, fiberglass) Check sources of flue products within 10--- ft of unit fresh air intake hood
Side condensate drain is used Minimum clearance
No flue discharge accessory installed, su rface is combustible material Surface behind servicer is grounded (e.g., metal, masonry wall, another unit) Surface behind servicer is electrically non - -- conductive (e.g., wood, fiberglass) Check for adjacent units or building fresh air intakes within 10 --- ft (3 m) of this unit’s flue outlet
Fig. 4 -- Service Clearance Dimensional Drawing
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 installa­tion requirements.
2. Determine unit location (from project plans) or select unit location.
3. Check for possible overhead obstructions which may interfere with unit lifting or rigging.
Step 1 — Plan for Unit Location
Select a location for the unit and its support system (curb or other) that provides for the minimum clearances required for safety. This includes the clearance to combustible surfaces, unit performance and service access below, around and above unit as specified in uni t drawings. See Fig. 4.
NOTE: Consider also the effect of adjacent units.
Unit may be installed directly on wood floor in g or on Class A, B, or C roof--covering material when roof curb is used.
C08337
Do not install unit in an indoor location. Do not locate air inlets near exhaust vents or other sources of contaminated air.
Although unit is weatherproof, avoid locations that permit water from higher level runoff and overhangs to fall onto the unit.
Select a unit mounting system that provides adequate height to allow installation of condensate trap per requirements. RefertoStep9—InstallExternalCondensate Trap and Line – for required trap dimensions.
Roof mount —
Check building codes for weight distribution requirements. Unit operating weight is shown in Table 1.
Step 2 — Plan for Sequence of Unit Installation
The support method used for this unit will dictate different sequences for t he steps of unit i nstallation. For example, on curb--mounted units, some accessories must be installed on the unit before the unit is placed on the curb. Review the following for recommended sequences for installation steps.
8
Table 1 – Operating Weights
UNIT / COIL TYPE
50TC ---__A / RTPF 705 (320) 845 (384) 855 (388) N/A
50TC ---__D / RTPF 730 (331) 855 (388) 865 (393) 1075 (489)
50TC ---__D / MCHX 805 (366) N/A 820 (372) 1030 (467)
OPTIONS AND ACCESSORES
Economizer
Vertical 75 (34) 75 ( 34) 75 (34) 75 (34)
Horizontal 122 (55) 122 (55) 122 (55) 122 (55)
Powe re d Outlet 35 ( 16) 35 (16) 35 (16) 35 (16)
H u m i d i --- M iZ e rRSystem 80 (36) 80 (36) 80 (36) 85 (39)
Curb
14---in/356 mm 143 (65) 143 (65) 143 (65) 143 (65)
24---in/610 mm 245 (111) 245 (111) 245 (111) 245 (111)
08 09 12 14
UNITS LB (KG)
Curb--mounted installation —
Install curb Install field--fabricated ductwork inside curb Install accessory thru--base service c onnection package
(affects curb and unit) (refer to accessory installation instructions for details)
Prepare bottom condensate drain connection to suit planned condensate line routing (see Step 9 for deta ils)
Rig and place unit Install outdoor air hood Install condensate line trap and piping Make electrical connections Install other accessories
Pad--mounted installation —
Prepare pad and unit supports Check and tighten the bottom condensate drain
connection plug Rig and place unit Convert unit to side duct connection arrangement Install field--fabricated ductwork at unit duct openings Install outdoor air hood Install condensate line trap and piping Make electrical connections Install other accessories
Frame--mounted installation —
Frame--mounted applic ations generally follow the sequence for a curb installation. Adapt as required to suit specific installation plan.
Step 3 — Inspect unit
Inspect unit for transportation damage. File any claim with transportation agency.
Confirm before installation of unit that volta ge, amperage and circuit protection requirements listed on unit data plate agree with power supply provided.
Step 4 — Provide Unit Support
Roof Curb Mount —
Accessory roof curb details and dimensions are shown in Fig. 6. Assemble and install accessory roof curb in accordance with instructions shipped with the curb.
NOTE: The gasketing of the unit to the roof curb is critical for a watertight seal. Install gasket supplied with the roof curb as shown in Fig. 6. Improperly applied gasket can also result in air leaks and poor unit performance.
Curb should be l evel. This is necessary for unit drain to function properly. Unit leveling tolerances are show in Fig. 5. Refer to Accessory Roof Curb Installation Instructions for additional information as required.
MAXIMUM ALLOWABLE
DIFFERENCE IN. (MM)
A-B
0.5” (13)
B-C
1.0” (25)
A-C
1.0” (25)
C06110
Fig. 5 -- Unit Leveling Tolerances
Install insulation, cant strips, roofing felt, and counter flashing as shown. Ductwork must be attached to curb and
not to the unit. The accessory thru--the--base power package must be installed before the unit is set on the roof curb.
If electric and control wiring is to be route d through the basepan, attach the accessory thru--the--base service connections to the basepan in accordance with the accessory installation instructions.
Slab Mount (Horizontal Units Only) —
Provide a level concrete slab that extends a minimum of 6 in. (150 mm) beyond unit cabinet. Install a gravel apron in front of condenser coil air inlet to prevent grass and foliage from obstructing airflow.
NOTE: Horizontal units may be installed on a roof curb if required.
Alternate Unit Support (In Lieu of Curb or Slab Mount) —
A non--combustible sleeper rail can be used in the unit curb support area. If sleeper rails cannot be used, support the long sides of the unit with a minimum of 3 equally spaced 4--in. x 4--in. (102 mm x 102 mm) pads on each side.
50TC
9
1-3/4"
TYP
[44.5]
C
50TC
ACCESSORY CONVENIENCE
OUTLET WIRING CONNECTOR
FITTING
1/2" [12.7] NPT 1/2" [12.7] NPT
CONTROL WIRING
FITTING
POWER WIRING
3/4" [19] NPT 1 1/4" [31.7] NPT
THRU THE CURB
CRBTMPWR004A01 THRU THE BOTTOM
CRBTMPWR002A01
CONNECTOR PKG. ACC. GAS CONNECTION TYPE GAS FITTING
1 3/4"
[44.5]
1.00"
[25.4]
12-1/2" [317.5] WIDE
INSULATED DECK PANELS
INSULATED DECK PANEL
9-15/16" [252.4] WIDE
"A"
1 3/4"
[44.4]
SEE NOTE #2
2-3/8"
[61]
20-3/4"
[513]
INSIDE
GAS SERVICE PLATE
THRU THE CURB
DRILL HOLE
2" [50.8] @
ASSEMBLY (IF
REQUIRED)
(SEE NOTE #8)
SECTION THRU SIDE
RETURN AIR
SUPPLY AIR
UNIT
[1987.5]
6' 6-1/4"
4' 2"
[1270.0]
"A"
NAIL (FIELD SUPPLIED)
TYPICAL (4) SIDES
7/16"
CERTIFIED DRAWING
SEE VIEW "B"
ROOFING FELT
(FIELD SUPPLIED)
COUNTER FLASHING
(FIELD SUPPLIED)
[11]
CURB ASY, ROOF
THIS DOCUMENT AND THE INFORMATION CONTAINED THEREIN
IS PROPRIETARY TO CARRIER CORPORATION AND SHALL NOT
BE USED OR DISCLOSED TO OTHERS, IN WHOLE OR IN PART,
WITHOUT THE WRITTEN AUTHORIZATION OF CARRIER CORPORATION.
1029120
TOLERANCES ON:
AUTHORIZATION NUMBER TITLE
DIMENSIONS ARE IN INCHES
----
UNLESS OTHERWISE SPECIFIED
1 DEC 2 DEC 3 DEC ANG
PRODUCTION
---
MATERIAL
DRAWING RELEASE LEVEL:
THIRD ANGLE
PROJECTION
ROOFING MATERIAL
(FIELD SUPPLIED)
CANT STRIP
(FIELD SUPPLIED)
RIGID INSULATION
SHEET 5 OF 5
50HJ405012
SIZE DRAWING NUMBER REV
D
-
-
-
DRAFTER CHECKER
ENGINEERING MANUFACTURING
MMC 12/16/09 - -
-
-
T-005, Y-002
WEIGHT:
- PURCH - N/A -
ENGINEERING REQUIREMENTS
SURFACE FINISH MFG/PURCH MODEL (INTERNAL USE ONLY) NEXT DRAWING SCALE DISTRIBUTION
ECN NO.APP'DCHK'DBYDATEREVISION RECORDREV
1067898--MMC4/22/13
(FIELD SUPPLIED)
2 1/4"
[57.2]
14 3/4"
[374.7]
NOTES:
1. ROOFCURB ACCESSORY IS SHIPPED DISASSEMBLED.
2. INSULATED PANELS: 25.4 [1"] THK. POLYURETHANE FOAM, 44.5 [1-3/4] # DENSITY.
3. DIMENSIONS IN [ ] ARE IN MILLIMETERS.
4. ROOFCURB: 18 GAGE STEEL.
5. ATTACH DUCTWORK TO CURB. (FLANGES OF DUCT REST ON CURB).
6. SERVICE CLEARANCE 4 FEET ON EACH SIDE.
7. DIRECTION OF AIR FLOW.
8. CONNECTOR PACKAGE CRBTMPWR002A01 IS FOR THRU-THE-CURB GAS TYPE
PACKAGE CRBTMPWR004A01 IS FOR THRU-THE-BOTTOM TYPE GAS CONNECTIONS.
53 1/2"
[1358.9]
11.42"
[290.0]
A
14"
24"
[356]
[610]
26"
[660.4]
6 3/64"
ROOF CURB
ACCESSORY #
CRRFCURB003A01
CRRFCURB004A01
[153.5]
1 3/4"
[44.4]
4 3/16"
[106.0]
81 3/4"
[827.1]
32 9/16"
[2076.3]
3"
40 3/16"
[76.2]
[1020.8]
VIEW "B"
CORNER DETAIL
[585.8]
23 1/16"
OPENING
RETURN AIR
OPENING
SUPPLY AIR
1 3/4"
[44.5]
[401.6]
15 13/16"
DUCT
GASKET
(FIELD SUPPLIED)
(SUPPLIED WITH CURB)
15 15/32
[392.9]
[800.9]
31 17/32"
1 3/4"
[44.5]
6' 61/4" WAS 6' 7 1/6", 4'2' WAS 4' 2 13/16";
18 GA WAS 16 GA.; 15 13/16" WAS 15 15/16"; NAIL
FIELD SUPPLIED WAS WITH CURB
C
SUPPLY AIR RETURN AIR
1/4"
[7.0]
[115.5]
4 9/16"
Fig. 6 -- Roof Curb Details
10
C13311
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 economizer.
For Units with Accessory Electric Heaters —
All installations require a minimum clearance to combustible surfaces of 1--in (25 mm) from duct for first 12--in (305 mm) away from unit.
For vertical ducted applications, secure all ducts to roof curb and building structure. Do not connect ductwork to unit.
Fabricate supply ductwork so that the cross sectional dimensions are equal to or greater than the unit supply duct opening dimensions for the first 18 in. (458 mm) of duct length from the unit basepan.
Insulate and weatherproof all external ductwork, joints, and roof openings with counter flashing and mastic in accordance with applicable codes.
Ducts passing through unconditioned spaces must be insulated and covered with a vapor ba rrier.
If a plenum return is used on a vertical unit, the return should be ducted through the roof deck to comply with applicable fire codes.
!
CAUTION
PROPERTY DAMAGE HAZARD
Failure to follow this caution may result in damage to roofing materials.
Membrane roofs can be cut by sharp sheet metal edges. Be careful when placing any sheet metal parts on such roof.
Outlet grilles must not lie directly below unit discharge.
!
WARNING
PERSONAL INJURY HAZARD
Failure to follow this warning could cause personal injury.
For vert ical supply and return units, tools or parts could drop into ductwork and cause an injury. Install a 90--degree turn in the return ductwork between the unit and the conditioned space. If a 90--degree elbow cannot be installed, then a grille of sufficient strength and density should be installed to prevent objects from falling into the conditioned space. Due to electric heater, supply duct will require 90--degree elbow.
50TC
UNIT
50TC ---A08 1290 586 88.0 2235 40.0 1015 41.5 1055
50TC ---A09 1410 641 88.0 2235 39.5 1005 49.5 1255
50TC ---A12 1515 689 88.0 2235 41.0 1040 49.5 1255
50TC ---D/E08 1410 641 88.0 2235 41.0 1040 41.5 1055
50TC ---D/E09 1525 693 88.0 2235 40.5 1030 49.5 1255
50TC ---D/E12 1565 711 88.0 2235 40.0 1015 49.5 1255
50TC ---D/E14 1720 782 88.0 2235 28.5 725 53.0 1345
NOTES:
1. Dimensions in ( ) are in millimeters.
2. SPREADER BARS REQUIRED — Top damage will occur if spreader bars are not used.
3. H ook rigging shackles through holes in base ra il, a s show n in deta il “A.” H oles in base rails are centered around the unit center of gravity. Use wooden top to prevent rigging straps from damaging unit.
MAX WEIGHT
LB KG IN MM IN MM IN MM
A B C
DIMENSIONS
Fig. 7 -- Rigging Details
11
C06005
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. See Table 1 and Fig. 7 for additional information.
Lifting holes are provided in base rails as shown in Fig. 7. Refer to rigging instructions on unit.
Rigging materials under unit (cardboard or wood) must be removed PRIOR to placing the unit on the roof curb.
When using the standard side drain connec tion, ensure the red plug in the alternate bottom connection is tight. Do this before setting the unit in place. The red drain pan can be tightened with a For further details see Step 9 -- Install External Condensate Trap and Line on page 14.
Before setting the unit onto the curb, recheck gasketing on curb.
50TC
!
UNIT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage.
All panels must be in place when rigging. Unit is not designed for handling by fork truck.
PositioningonCurb—
Position unit on roof curb so that the following clearances are maintained: between the roof curb and the ba se rail inside the front and back, 0.0 in. clearance between the roof curb and the base rail inside on the duct end of the unit. This will result in the distance between the roof curb and the base rail i nside on the condenser end of the unit being approximately
1
/2--in. square socket drive extension.
CAUTION
1
/4in. (6.4 mm) clearance
1
/4in. (6.4 mm).
Do not cover or obscure visibility to the unit’s informative data plate when insulating horizontal ductwork.
C06108
Fig. 8 -- Horizontal Conversion Panels
Step 8 — Install Outside Air Hood
Economizer and Two Position Damper Hood Package Removal and Setup -- Factory Option
1. The hood is shipped in knock--down form and must be field assembled. The indoor coil access panel is used as the hood top while the hood sides, divider and filter are packaged together, attached to a metal support tray us­ing plastic stretch wrap, and shipped in the return air compartment behind the indoor coil access panel. The hood assembly’s metal tray is attached to the basepan and also attached to the damper using two plastic tie-­wraps.
2. To gain access to the hood, remove the filter access panel. (See Fig. 9.)
FILTER ACCESS PANEL
Although unit is weatherproof, guard against water from higher level runoff and overhangs.
After unit is in position, remove riggi ng skids and shipping materials.
Step 7 — Convert to Horizontal and Connect Ductwork (when required)
Unit is shipped in the vertical duct configuration. Unit without factory--installed economizer or return air smoke detector option may be field--converted to horizontal ducted configuration. To convert to horizontal configuration, remove screws from side duct opening covers and remove covers. Using the same screws, install covers on vertical duct openings with the insulation--side down. Seals around duct openings must be tight. See Fig. 8.
Field--supplie d flanges should be attached to horizontal duct openings and all ductwork should be secured to the flanges. Insulate and weatherproof all external ductwork, joints, and roof or building openings with counter flashing and mastic in accordance with applicable codes.
INDOOR COIL ACCESS PANEL
C10146
Fig. 9 -- Typical Access Panel Locations
3. Locate the (2) screws holding the metal tray to the basepan and remove. Locate and cut the (2) plastic tie--wraps securing the assembly to the damper. (See Fig. 10.) Be careful to not damage any wiring or cut tie--wraps securing any wiring.
12
4. Carefully lift the hood assembly (with metal tray) through the filter access opening and assemble per the steps outlined in Economizer Hood and Two–Position Hood, below.
Hood Parts
Plastic Tie Wrap Qty (2)
Screws for Metal Tray Qty (2)
C08639
Fig. 10 -- Economizer and Two--Position Damper
Hood Parts Location
TOP PANEL
TOP PANEL
INDOOR COIL ACCESS PANEL
INDOOR COIL ACCESS PANEL
CAULK HERE
Fig. 11 -- Indoor Coil Access Panel Relocation
TOP PANEL
C06025
50TC
Economizer Hood and Two--Position H ood —
NOTE: If the power exhaust accessory is to be installed
on the unit, the hood shipped with the unit will not be used 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 the top of the hood. Remove the screws along the sides and bot­tom of the indoor coil access panel. See Fig. 11.
2. Swing out indoor coil access panel and insert the hood sides under the panel (hood top). Use the screws provided to attach the hood sides to the hood top. Use screws provided to attach the hood sides to the unit. See Fig. 12.
3. Remove the shipping tape holding the economizer barometric relief damper in place (economizer only).
4. Insert the hood divider between the hood sides. See Fig. 12 and 13. Secure hood divide r with 2 screws on each hood side. The hood divider is also used as the bottom filter rack for the aluminum filter.
5. Open the filter clips which are located underneath t he hood top. Insert the alumi num 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. 13.
6. Caulk the ends of the joint between the unit top panel and the hood top.
7. Replace the filter access panel.
LEFT HOOD SIDE
19 1/16”
B
(483mm)
HOOD DIVIDER
SCREW
33 3/8”
Fig. 12 -- Economizer Hood Construction
DIVIDER
OUTSIDE AIR
CLEANABLE ALUMINUM FILTER
FILTER
INDOOR COIL ACCESS PANEL
(848mm)
HOOD
C06026
BAROMETRIC RELIEF
13
Fig. 13 -- Economizer Filter Installation
FILTER CLIP
C08634
Step 9 — Install External Condensate Trap and Line
The unit has one3/4-in. condensate drain connection on the end of the condensate pan and an alternate connection on the bottom. See Fig. 14. Unit airflow confi guration does not determine which drain connection to use. Either drain connection can be used with vertical or horizontal applications.
To use the al ternate bottom drain connection, remove the red drain plug from the bottom connection (use a square socket drive extension) and install it in the side drain connection.
50TC
CONDENSATE PAN (SIDE VIEW)
STANDARD SIDE DRAIN
DRAIN
PLUG
(FACTORY-INSTALLED)
Fig. 14 -- Condensate Drain Pan (Side View)
The piping for the condensate drain and external trap can be completed after the unit is in place. See Fig. 15.
MINIMUM PITCH 1” (25mm) PER 10’ (3m) OF LINE
TO ROOF DRAIN
NOTE: Trap should be deep enough to offset maximum unit static difference. A 4” (102mm) trap is recommended.
BASE RAIL
OPEN VENT
3˝ (76mm)
MIN
DRAIN PLUG
Fig. 15 -- Condensate Drain Piping Details
All units must have an external trap for condensate drainage. Install a trap at least 4-in. (102 mm) deep and protect against freeze-up. If drain line is installed downstream from the external trap, pitch the line away from the unit at 1-in. per 10 ft (25 mm in 3 m) of run. Do not use a pipe size smaller than the unit connection (
ALTERNATE BOTTOM DRAIN
3
/4-in.).
1
/2-- i n .
C08021
SEE NOTE
ROOF CURB
C11291
Step 10 — Make Electrical Connections
!
WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury or death.
Do not use gas piping as an electrical ground. Unit cabinet must have an uninterrupted, unbroken electrical ground to minimize the possibility of personal injury if an electrical fault should occur. This ground may consist of electrical wire connected to unit ground lug in control com partment, or condui t approved for electrical ground when installed in accordance with NEC (National Electrical Code); ANSI/NFPA 70, latest edition (in Canada, Canadian Electrical Code CSA [Canadian Standa rds Association] C22.1), and local electrical codes.
NOTE: Check all factory and field electrical connections for tightness. Field--supplied wiring shall conform with the limitations of 63_F(33_C) rise.
Field Power Supply —
If equipped with optional Powered Conve nience Outlet: The power source leads to the convenience outlet’s transformer primary are not factory connected. Installer must connect these leads according to required operation of the convenience outlet. If an always--energized convenience outlet operation is desired, connect the source leads to the line side of the unit--mounted disconnect. (Check with local codes to ensure this method is acceptable in your area.) If a de--energize via unit disconnect switch operation of the convenience outlet is desired, connect the source leads to the load side of the unit disconnect. On a uni t without a unit--mounted disconnect, connect the source leads to compressor contactor C and indoor fan contactor IFC pressure lugs with unit field power leads.
All units except 208/230-v units are factory wired for the voltage shown on the nameplate. If the 208/230-v unit is
to be connected to a 208-v power supply, the control transformer must be rewired by moving the black wire with the connection and moving it to the 208-v terminal on the primary side of the transformer. Refer to
unit label diagram for additional informat ion. Field power wires will be connected line--side pressure lugs on the power terminal block or at factory--installed option non--fused disconnect.
Field power wires are connected to the unit at line--side pressure lugs on compressor contactor C and indoor fan contactor IFC (see wiring diagram label for control box component arrangement) or at factory--installed option non--fused disconnect switch. Max wire size is #4 AWG (copper only).
1
/4-in. female spade connector from the 230--v
1
/4-in. male
14
NOTE: TEST LEADS -- Unit may be equipped with short leads (pigtails) on the field line connection points on contactor C or optional disconnect switch. These leads are for factory run--test purposes only; remove and discard before connecting field power wires to unit connection points. Make field power connections directly to line connection pressure lugs only.
!
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 furnace. Use only copper wire. (See Fig. 16.)
ELECTRIC
DISCONNECT
SWITCH
COPPER
WIRE ONLY
To field install the NFD shaft and handle:
1. Remove the unit front pane (see Fig. 2 and 3).
2. Remove (3) hex screws on the NFD enclosure -- (2) on the face of the cover and (1) on the left side cover.
3. Remove the front cover of the NFD enclosure.
4. Make sure the NFD shipped from the factory is at OFF position (the arrow on the black handle knob is at OFF).
5. Insert the shaft with the cross pin on the top of the shaft in the horizontal position.
6. Measure from the tip of the shaft to the top surface of the black pointer; the measurement should be 3.75 to
3.88 in. (95 to 99 mm).
7. Tighten the locking screw to secure the shaft to the NFD.
8. Turn the handle to the OFF position with red arrow pointing at OFF.
9. Install the handle on to the painted cover horizontally with the red arrow pointing to the left.
10. Secure the handle to the paint ed cover with (2) screws and lock washers supplied.
11. Engaging the shaft into the handle socket, re--install (3) hex screws on the NFD enclosure.
12. Re--install the unit front panel.
50TC
ALUMINUM
WIRE
A93033
Fig. 16 -- Disconnect Switch and Unit
Units with Factory--Installed Non--Fused Disconnect —
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. Discard the factory test leads (see Fig. 19).
Connect field power supply conductors to LINE side terminals when the switch enc losure cover is removed to attach the handle.
C12279
Fig. 18 -- Handle and Shaft Assembly for NFD
C12284
Fig. 17 -- Location of Non--Fused Disconnect Enclosure
15
Units Without Factory--Installed Non-- Fused Disconnect —
When installing units, provide a disconnect switch per NEC (National Electrical Code) of adequate size. Disconnect sizing data is provided on the unit informative plate. Locate on unit cabinet or within sight of the unit per national or local codes. Do not cover unit informative plate if mounting the disconnect on the unit cabinet.
All Units —
All field wiring must comply with NEC and all local codes. Size wire based on MCA (Minimum Circuit Amps) on the unit informative plate. See Fig. 19 for power wiring connections to the unit power terminal block and equipment ground. Maximum wire size is #4 ga AWG per pole.
Units Without Disconnect Option
50TC
C IFC
13 13
11
Disconnect
per
NEC
L1
L2 L3
208/230-3-60
460-3-60 575-3-60
Units With Disconnect Option
Factory
Wiring
Voltage to compressor terminals during operation must be within voltage range indicated on unit nameplate. On 3--phase units, voltages between phases must be balanced within 2% and the current within 10%. Use the formula shown in the legend for Tables 10 and 11, Note 3 (see page 55) to determine the percent of voltage imbalance. Operation on improper line voltage or excessive phase imbalance constitutes abuse and may cause damage to electrical compone nts. Such operation would invalida te any applicable Carrier warranty.
NOTE: Check all factory and field electrical connections for tightness.
Convenience Outlets —
!
WARNING
ELECTRICAL OPERATION HAZARD
Failure to follow this warning could result in personal injury or death.
Units with convenience out let circuits may use multiple disconnects. Check convenience outlet for power status before opening unit for servi ce. Locate its disconnect switch, if appropriate, and open it. Tag--out this switch, if necessary.
Tw o types of convenience outlets are of fered on 50TC models: Non--powered and unit--powered. Both types provide a 125--volt GFCI (ground--fault circuit--interrupter) duplex receptacle rated at 15--A behind a hinged waterproof access cover, located on the end panel of the unit. See Fig.
20.
13 5
Optional
Disconnect
Switch
24 6
L1 L2 L3
Disconnect factory test leads and discard.
C09349
Fig. 19 -- Power Wiring Connections
Provide a ground--fault and short--circuit over--current protection device (fuse or breaker) per NEC Article 440 (or local codes). Refer to unit informative data plate for MOCP (Maximum Over--current Protection) device size.
All units except 208/230-v units are factory wired for the voltage shown on the nameplate. If the 208/230-v unit is to
be connected to a 208-v power supply, the control transformer must be r ewir ed by moving the black wire with
1
/4-in. female spade connector from the 230--v
the connection and moving it to the 208-v
1
/4-in. male termina l
on the primary side of the transformer. Refer to unit label
diagram for additional information.
Pwd-CO
Convenience
Outlet
GFCI
Pwd-CO
Fuse
Switch
Control Box
Access Panel
Transformer
C08128
Fig. 20 -- Convenience Outlet Location
Installing Weatherproof Cover: A weatherproof
while-in-use cover for the factory-installed convenience outlets is now required by UL standards. This cover cannot be factory-mounted due its depth; it must be installed at unit installation. For shipment, the convenience outlet is covered with a blank cover plate.
The weatherproof cover kit is shipped in the unit’s control box. The kit include s the hinge d cover, a backing plate and gasket.
16
DISCONNECT ALL POWER TO UNIT AND CONVENIENCE OUTLET. LOCK--OUT AN D TAG--OUT ALL POWER.
Remove the blank cover plate at the convenience outlet; discard the blank cover.
Loosen the two screws at the GFCI duplex outlet, until
1
approximately
/2-in (13 mm) under screw heads a re exposed. Press the gasket over the screw heads. Slip the backing plate over the screw hea ds at the keyhole slots and align with the gasket; tighten the two screws until snug (do not over-tighten).
Mount the weatherproof cover to the ba cking plate as shown in Fig. 21. Remove two slot fillers in the bottom of the cover to permit service tool cords to exit the cover. Check for full closing and latching.
COVER – WHILE-IN-USE WEATHERPROOF
RECEPTACLE NOT INCLUDED
BASE PLATE FOR GFCI RECEPTACLE
C09022
Fig. 21 -- Weatherproof Cover Installation
Non-- powered type: This type requires the field
installation of a general--purpose 125--volt 15--A circui t powered from a source elsewhere in the building. Observe national and local codes when selecting wire size, fuse or breaker requirements and disconnect switch size and location. Route 125--v power supply conductors into the bottom of the utility box containing the duplex receptacle.
Unit--powered type: A unit--mounted transformer is factory--installed to stepdown the main power supply voltage to the unit to 115--v at the duplex receptacle. This option also includes a manual switch with fuse, located in a utility box and mounted on a bracket behind the convenience outlet; access is t hrough the unit’s control box access panel. See Fig. 20.
The primary leads to the convenience outlet transformer are not factory--connected. Selection of primary power source is a customer--option. If local codes permit, the transformer primary leads can be connected at the line--side terminals on the unit--mounted non--fused disconnect or HACR breaker switch; this will provide service power to the unit when the unit disconnect switch or HACR switch is open. Other connection methods will result in the convenience outlet circuit being de--energized when the unit disconnect or HACR switch is open. See Fig. 22.
C08283
UNIT
VOLTAGE
208,
230
460 480
575 600
CONNECT
AS
240
PRIMARY
CONNECTIONS
L1: RED +YEL L2: BLU + GRA
L1: RED Splice BLU + YEL L2: GRA
L1: RED L2: GRA
TRANSFORMER
TERMINALS
H1 + H3 H2 + H4
H1
H2 + H3
H4
H1 H2
Fig. 22 -- Powered Convenience Outlet Wiring
Test the GFCI receptacle by pressing the TEST button on the face of the receptacle to trip and open the receptacle. Check for proper grounding wires and power line phasing if the GFCI receptacle does not trip as required. Press the RESET button to clear the tripped condition.
Fuse on power type: The factory fuse is a Bussman “Fusetron” T--15, non--renewable screw-- in (Edison base) type plug fuse.
NOTICE
Convenience Outlet Utilization
Maximum Continuous use : 8 Amps 24/7
B50HJ542739
C13415
Fig. 23 -- Convenience Outlet Utilization Notice Label
Using unit--mounted convenience outlets: Units with
unit--mount ed convenience outlet circuits will often require that two disconnects be opened to de--energize all power to the unit. Treat all units as electrically energized until the convenience out let power is also checked and de--energization is confirmed. Observe National Electrical Code Article 210, Branch Circuits, for use of convenience outlets.
50TC
17
Factory--Option Thru--Base Connections —
This service connection kit consists of a
1
bulkhead connector and a 1
/4--in electrical bulkhead
1
/2--in electrical
connector, all factory--installed in the embossed (raised) section of the unit basepan in the condenser section. The
1
/2--in bulkhead c onnector enables the low--voltage control
wires to pass through the basepan. The 1
1
/4--in electrical bulkhead connector allows the high--voltage power wires to pass through the basepan. See Fig. 24.
LOW VOLTAGE CONDUIT CONNECTOR
HIGH VOLTAGE CONDUIT
50TC
CONNECTOR
Fig. 24 -- Thru--Base Connection Fittings
C13412
Thermostat —
Install a Carrier--approved accessory thermostat accordin g to installation instructions included with the accessory. For complete economizer function, select a two--stage cooling thermostat. Locate the thermostat accessory on a solid wall in the conditioned space to sense average temperature in accordance with the thermostat installation instructions.
If the thermostat contains a logic circuit requiring 24--v power, use a thermostat cable or equivalent single leads of different colors with minimum of seven leads. If the thermostat does not require a 24--v source (no “C” connection required), use a thermosta t cable or equivalent with minimum of six leads. Check the thermostat installation instructions for additional features which might require additional conductors in the cable.
For wire runs up to 50 ft. (15 m), use no. 18 AWG (American Wire Gage) insulated wire [35_C(95_F) minimum]. For 50 to 75 ft. (15 to 23 m), use no. 16 AWG insulated wire [35_C(95_F) minimum]. For over 75 ft. (23 m), use no. 14 AWG insulated wire [35_C(95_F) minimum]. All wire sizes larger than no. 18 AWG cannot be directly connected to the thermostat and will require a junction box and splice at the thermostat.
Check tightness of connector lock nuts before connecting electrical conduits.
Field--supplie d and field--installed liquidtight conduit connectors and conduit may be attached to the connectors on the basepan. Pull correctly rated high voltage and low voltage through appropriate conduits. Connect the power conduit to the internal disconnect (if unit is so equipped) or to the external disconne ct (through unit side panel). A hole must be field cut in the main control box bottom on the left side so the 24--v control connections can be made. Connect the control power conduit to the unit control box at this hole.
Units without Thru--Base Connections —
1. Install power wiring conduit through side pane l open­ings. Install conduit between disconnect and control box.
2. Install power lines to terminal connections as shown in Fig. 19.
Field Control Wiring —
The 50TC unit requires an external temperature control device. This device can be a thermostat (field--supplied) or a PremierLinkt 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 Controller for Building Management Systems using non--CCN protocols. The RTU Open controller is available as a factory--installed option only.
Central
Typical
Thermostat
Connections
C
G
W2
W1
O/B/Y2
(Note 1)
Y1
R
Note 1: Typical multi-function marking. Follow manufacturer’s configuration instructions to select Y2.
Note 2: W2 connection not required on units with single-stage heating. Field Wiring
(Note 2)
Terminal
X
C
G
W2
W1
Y2
Y1
R
T–STAT
Board
X
C
G
W2
W1
Y2
Y1
R
C09351
Fig. 25 -- Typical Low--Voltage Control Connections
Unit without Thru--Base Connection Kit —
Pass the thermostat control wires through the hole provided in the end panel (see item “D” in the view labeled “LEFT” in Fig. 2 and 3); then feed the wires through the raceway built into the corner post to the control box. Pull the wires over to the terminal strip on the upper--left corner of the Central Terminal Board. (CTB) See Fig. 26.
18
RACEWAY
DISCONNECT MOUNTING LOCATION
HOLE IN END PANEL (HIDDEN)
C08027
Fig. 26 -- Field Control Wiring Raceway
NOTE: If thru-- the--bottom connections accessory is
used, refer to the accessory installation instructions for information on routing power and control wiring.
Heat Anticipator Settings —
Set heat anticipator settings at 0.14 amp for the first stage and 0.14 amp for second-- stage heating, when available.
Electric Heaters
50TC units may be e quipped with field--installed accessory electric heaters. The heaters are modular in design, with heater frames holding open coil resistance wires strung through ceramic insulators, limit switches and a control contactor. One or two heater modules m ay be used in a unit.
Heater modules are installed in the compartment below the indoor (supply) fan outlet. Access is through the indoor access panel. Heater modules slide into the compartment on tracks along the bottom of the heater opening. See Fig. 27 -- 29.
Not all available heater modules may be used in every unit. Use only those heater modules that are UL listed for use in a specific size unit. Refer to the label on the unit cabinet for the list of approved heaters.
Unit heaters are marked with Heater Model Numbers. But heaters are ordered as and shipped in cartons marke d with a corresponding heater Sales Package part number. See Table 2 for correlation between heater Model Number and Sales Package part number.
NOTE: The value in position 9 of the part number differs between the sales package part number (value is 1) and a bare heater model number (value is 0).
UNIT BLOCK-OFF PAN EL
OUTDOOR ACCESS PANEL
INDOOR ACCESS PAN EL
Fig. 27 -- Typical Access Panel Location (3--6 Ton)
DISCONNECT MOUNTING LOCATION
MAIN CONTROL BOX
EMT OR RIGID CONDUIT (FIELD-SUPPLIED)
BRACKET AND CONDUIT DRIP BOOT
SINGLE POINT BOX
SINGLE POINT BOX MOUNTING SCREW
CONTROL WIRE TERMINAL BLOCK
HEATER MODULE (LOCATION 1)
CENTER POST
HEATER MODULE (LOCATION 2)
MANUAL RESET LIMIT SWITCH
HEATER MOUNTING BRACKET
Fig. 28 -- Typical Component Location
TRACK
FLANGE
Fig. 29 -- Typical Module Installation
C08133
HEATER COVERS
C08134
C08135
50TC
Table 2 – Heater Model Number
Bare Heater Model Number C R H E A T E R 0 0 1 A 0 0
Heater Sales Package PNO Includes:
Bare Heater Carton and packing materials Installation sheet
C R H E A T E R 1 0 1 A 0 0
19
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 distribution and fuse blocks. The single point box will be installed directly under the unit control box, just to the left of the partition separating the indoor section (with electric heaters) from the outdoor section. The Single Point Box has a hinge d access cover. See Fig. 30. The Single Point Box also includes a set of power taps and pigtails to complete the wiring between the Single Point Box and the unit’s main control box terminals. Refer to the accessory heater and 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.)
Single Point Boxes without Fuses —
50TC
Unit heater applications not requiring supplemental fuses require a special Single Point Box without any fuses. The accessory Single Point Boxes contain a set of power taps and pigtails to complete the wiring between the Single Point Box and the unit’s main control box terminals. Refer to accessory heater and Single Point Box installation instructions for details on tap connections.
CONTROL BOX
BUSHING
SINGLE POINT BOX MOUNTING SCREWS
DRIP BOOT BRACKET MOUNTING SCREWS
POWER WIRES
FOAM BUSHING
HEATER RELAY S
HEATER MOUNTING SCREWS
2
1
1
1
2
1
3
3
A L
LIE
D
P
A
C O
R P .
M O
DE
L
NO
.
O
D
ER
I A
L
N O.
2 2
. 2
ISTED
AI
R
NDITIONIN
1
G
2
3
UI
P ACCES
S
346
N
.
3
P /
N
2
­5
6 1
RE
0
V
­4
Fig. 30 -- Typical Single Point Installation
C14253
CTB
CONTL BOARD
2
3
12
Field
TB4
VIO
ORN
BRN
BRN
BRN
BRN
ORN
13
VIO
VIO
2
VIO
Connections
Elec Htr
HR2
HR1
BRN
BRN
VIO
VIO
HR1: On Heater 1 in Position #1 HR2: On Heater 2 in Position #2 (if installed)
C08331
Fig. 31 -- Accessory Electric Heater Control
Connections (Except CRHEATER128B00-- 129B00)
For CRHEATER128B00--129B00 only
— Connect t he ORN lead from Heater Relay 1 (HR1) to terminal TB4--1. For 2 stage heating connect the VIO lead from Heater Relay 3 (HR3) to terminal TB4--2. For 1 stage heating with CRHEATER128B00 or CRHEATER129B00 connect the ORN lead from HR1 and the VIO lead from HR3 to terminal TB4--1. Connect the BRN lead from HR1 to TB4--3. See Fig. 32.
CTB
CONTL
BOARD
2
3
12
VIO
ORN
BRN
Low--Vol tage Control Connections —
Pull the low--voltage control leads from the heater module(s) -- VIO and BRN (two of each if two modules are installed; identify for Module #1) -- to the 4--pole terminal board TB4 located on the heater bulkhead to the left of Heater #1. Connect the VIO lead from Heater #1 to terminal TB4--1. Except for CRHEATER128B00--129B00, for 2 stage heating, connect the VIO lead from Heater #2 to terminal TB4--2. For 1 stage heating with 2 heater modules connect the VIO lead from bot h Heater #1 and #2 to terminal TB4--1. Connect both BRN leads to terminal TB4--3. See Fig. 31.
ORN VIO BRN
TB4
2
ORN
31
BRNVIO Field Connections
Elec Htr
VIO
HR3
LS
ORN BRN
For simplicity, not all control wiring internal to the electric heaters is shown.
LS: Primary Limit Switch
HR1
Fig. 32 -- Accessory Electric Heater Control
Connections for CRHEATER128B00--129B00 Only
20
a50--- 9606
Humidi-- MiZerRSystem Control Connections —
Humidi--MiZer System –Space RH Controller —
The Humidi--MiZer dehumidification system requires a field--supplied and installed space relative humidity control device. This device may be a separate humidistat control (contact closes on rise in space RH above control setpoint) or a combination thermostat--humidistat control device such as Carrier’s Edge isolated contact set for dehumidification control. The humidistat is normally used in applications where a temperature control is already provided (units with PermierLinkt control).
To connect the Carrier humidistat (HL38MG029):
1. Route the humidistat 2--conductor cable (field--sup­plied) through the hole provided in the unit corner post.
2. Feed wires through the raceway build into the corner post (see Fig. 26) to the 24--v barrier located on the left side of the control box. The raceway provides the UL--required clearance between high--voltage and low--voltage wiring.
3. Use wire nuts to connect humidistat cable to two PINK leads in the low–voltage wiring as shown in Fig. 35.
To connect the Thermidistat device (33CS2PPRH--01):
1. Route the Thermidistat multi--conductor thermostat cable (field--supplied) through the hole provided in the unit corner post.
2. Feed wires through the raceway build into the corner post (see Fig. 26) to the 24--v barrier located on the left side of the control box. The raceway provides the UL--required clearance between high--voltage and low--voltage wiring.
3. The Thermidistat has dry contacts at terminals D1 and D2 for dehumidification operation (see Fig. 36). 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 information.
R
Pro Thermidistat with
% RELATIVE HUMIDITY
C09295
Fig. 33 -- Accessory Field--Installed Humidistat
®
C09296
Fig. 34 -- EDGE Pro Thermidistat
EconoMi$er
R
X (Factory--Installed Option) —
For details on operating 50TC units equipped with the factory--installed EconoMi$er X option, refer to
Factory--Installed Economizers for TC/TCQ/HC/HCQ/ LC/KC/KCQ Rooftop Units, 3 to 27.5 Nominal Tons. Economizer Supplement Related to California Title 24.
50TC
21
50TC
C150008
Fig. 35 -- Typical Humidi--MiZer Adaptive Dehumidification System Humidistat Wiring
EDGE Pro THERMIDISTAT
Rc
Rh
W1
G
Y2
C
O/W2/B
Y1
Unit CTB
THERMOSTAT
X*
C
G
W2
W1
Y2
Y1
OAT
R
RRS
SRTN
HUM
Humidi-MiZer™ FIOP
D1 D2 V+
Vg
*Connection not required.
Fig. 36 -- Typical Rooftop Unit with Humidi--MiZer Adaptive Dehumidification System
with Edge Pro Thermidistat Device
22
C09298
PremierLinkt (Factory--Installed Option) —
50TC
Fig. 37 -- PremierLink Controller
The PremierLink controller (see Fig. 37) is compatible with Carrier Comfort Networkr (CCN) devices. This control is designed to allow users the access and ability to change fac tory--defined setti ngs, thus expanding the function of the standard unit control board. CCN service access tools include System Pilott, Touch Pilott and Service Tool. (Standard tier display tools Navigatort and Scrolling Marquee are not suitable for use with latest PremierLink controller (Version 2.x).)
The PremierLink controller is factory--mounted in the 50TC unit’s main control box to the left of the Central Terminal Board (CTB). Factory wiring is completed through harnesses connected to the CTB thermostat. Field connections are made at a 16--pole terminal block (TB1) located on the bottom shelf of the unit control box in front
C08199
of the PremierLink controller. The factory--installed PremierLink controller includes the supply--air temperature (SAT) sensor. The outdoor air temperature (OAT) sensor is included in the FIOP/accessory EconoMi$er
R
2 package.
The PremierLink controller requires the use of a Ca rrier electronic thermostat or a CCN connection for time broadcast to initiate its internal timeclock. This is necessary for broadcast of time of day functions (occupied/unoccupied).
NOTE: PremierLink controller is shipped in Sensor mode. To be used with a thermostat, the PremierLink controller must be configured to Thermostat mode. Refer to PremierLink Configuration instructions for Operating Mode.
Fig. 38 -- 50TC Control Box Component Locations
23
C150009
50TC
Fig. 39 -- PremierLink Controller Wiring Schematic
24
C150010
50TC
Fig. 40 -- PremierLink Controller Wiring Schematic with Humidi--MiZerRSystem
25
C150011
Supply Air Temperature (SAT) Sensor —
On FIOP--equipped 50TC unit, the unit is supplied with a supply--air temperature (SAT) sensor (33ZCSENSAT). This sensor is a tubular probe type, approx 6--inches (152 mm) in length. It is a nominal 10--k ohm thermistor.
The SAT is factory--wired. The SAT probe is wire--tied to the supply--air opening (on the horizontal opening end) in its shipping position. Remove the sensor for installation. Re--position the sensor in the flange of the supply--a ir opening or in the supply air duct (as required by local
1
codes). Drill or punch a
/2--in. hole in the fla nge or duct. Use two field--supplied, self--drilling screws to secure the sensor probe in a horizontal orientation. See Fig. 41.
50TC
NOTE: The sensor must be mounted in the discharge airstream downstream of the cooling coil and any heating devices. Be sure the probe tip does not come in contact with any of the unit’s heater surfaces.
Outdoor Air Temperature (OAT) Sensor —
R
The OAT is factory--mounted in the EconoMi$er
2(FIOP or accessory). It is a nominal 10k ohm thermistor attached to an eyelet mounting ring.
EconoMi$er2 —
The PremierLink controller is used wit h E conoMi$er2 (option or accessory) for outdoor air management. The damper position is controlled directly by the PremierLink controller; the Ec onoMi$er2 unit has no internal logic device.
Outdoor air management functions can be enhanced with field--installation of these accessory control devices:
Enthalpy control (outdoor air or differential sensors) Space CO Outdoor air CO
sensor
2
sensor
2
Refer to Table 3 for accessory part numbers.
SUPPLY AIR TEMPERATURE SENSOR
SUPPLY AIR
RETURN AIR
ROOF CURB
Field Connections
Field connections for accessory sensor and input devices are made at the 16--pole terminal block (TB1) located on the control box bottom shelf in front of the PremierLink control (See Fig. 39 and 40). Some input de vices also
C08200
Fig. 41 -- Typical Mounting Location for Supply Air
Temperature (SAT) Sensor on Small Rooftop Units
require a 24--vac signal source; connect at CTB terminal R at “THERMOSTAT” connection strip for this signal source. See connections figures on following pages for field connection locations (and for continued connections
NOTE: Refer to the PremierLinkt Controller Ins tallatio n,
at the PremierLink board inputs).
Start--up, and Configuration Instructions for complete PremierLink configuration, operating sequences and troubleshooting information. Have a copy of this manual available at unit start--up.
Table 4 provides a summary of field connections for units equipped with Space Sensor. Table 5 provides a summary of field connections for units equipped with Space Thermostat.
Table 3 – PremierLink Sensor Usage
OUTDOOR AIR
APPLICATION
Differential Dry Bulb
Tem p er a tu r e wit h
PremierLink
(PremierLink requires
4 --- 2 0 m A A c t u a t o r )
Single Enthalpy with
PremierLink
(PremierLink requires
4 --- 2 0 m A Ac t u a t o r )
Differential Enthalpy
with PremierLink
(PremierLink requires
4 --- 2 0 m A Ac t u a t o r )
NOTES:
Sensors (Optional):
CO
2
33ZCSENCO2 --- Room sensor (adjustable). Aspirator box is required for duct mounting of the sensor. 33ZCASPCO2 --- Aspirator box used for duct---mounted CO 33ZCT55CO2 --- Space temperature and CO 33ZCT56CO2 --- Space temperature and CO
TEMPERATURE
SENSOR
I n c l u d e d ---
CRTEMPSN001A00
I n c l u d e d ---
Not Used
I n c l u d e d ---
Not Used
room sensor with override.
2
room sensor with override and setpoint.
2
RETURN AIR
TEMPERATURE
SENSOR
R e q u i r e d --­33ZCT55SPT or equivalent
---
---
room sensor.
2
26
OUTDOOR AIR
ENTHALPY SENSOR
--- ---
R e q u i r e s ---
33CSENTHSW
R e q u i r e s ---
33CSENTHSW
RETURN AIR
ENTHALPY SENSOR
---
R e q u i r e s ---
33CSENTSEN
Table 4 – Space Sensor Mode
TB1 TERMINAL FIELD CONNECTION INPUT SIGNAL
1 T 5 5 --- S E N / T 5 6 --- S E N Analog (10k thermistor)
2 RMTOCC Discrete, 24VAC
3 T 5 5 --- S E N / T 5 6 --- S E N Analog (10k thermistor)
4 CMPSAFE Discrete, 24VAC
5 T56 --- SET Analog (10k thermistor)
6 FSD Discrete, 24VAC
7 LOOP---PWR Analog, 24VDC
8 SPS Discrete, 24VAC
9 IAQ --- SEN A n a l o g , 4 --- 2 0 m A
10 FILTER Discrete, 24VAC
11 I A Q --- C O M / O A Q --- C O M / R H --- C O M A n a l o g , 4 --- 2 0 m A
12 CCN + (RED) Digital,,5VDC
13 OAQ--- SEN/RH--- SEN An a l o g , 4 --- 2 0 m A
14 CCN Gnd (WHT) Digital, 5VDC
15 AUX OUT(Power Exhaust) (Output)Discrete 24VAC
16 CCN --- (BLK) Digital, 5VDC
LEGEND:
T 5 5 --- S p a c e Te m p e r a t u r e Se n s o r F S D --- F i r e Sh u t d o w n T 5 6 --- S p a c e Te m p e r a t u r e Se n s o r I A Q --- I n d o o r Ai r Q u a l i t y ( C O CCN --- Carrier Comfort Network (communication bus) OAQ --- Outdoor Air Quality (CO C M P S A F E --- C o m p r e s s o r S a f e t y R H --- R e l a t i v e H u m i d i t y F I LT E R --- D i r t y F i l t e r S w i t c h S F S --- S u p p l y F a n St a t u s
50TC
)
2
)
2
Table 5 – Thermostat Mode
TB1 TERMINAL FIELD CONNECTION INPUT SIGNAL
1 RAT SEN Analog (10k thermistor)
2 G Discrete, 24VAC
3 RAT SEN Analog (10k thermistor)
4 Y1 Discrete, 24VAC
5
6 Y2 Discrete, 24VAC
7 LOOP--- PWR Analog, 24VDC
8 W1 Discrete, 24VAC
9 I A Q --- S E N Analog, 4 --- 20mA
10 W2 Discrete, 24VAC
11 I A Q --- C O M / O A Q --- C O M / R H --- C O M Analog, 4 --- 20mA
12 CCN + (RED) Digital, 5VDC
13 O A Q --- S E N / R H --- S E N Analog, 4 --- 20mA
14 CCN Gnd (WHT) Digital, 5VDC
15 AUX OUT (Power Exhaust) (Output) Discrete 24VAC
16 CCN --- (BLK) Digital, 5VDC
LEGEND:
CCN --- Carrier Comfort Network (communication bus) RH --- Relative Humidity G --- Thermostat Fan W1 --- Thermostat Heat Stage 1 IAQ --- Indoor Air Quality (CO OAQ --- Outdoor Air Quality (CO RAT --- Return Air Temperature Y2 --- Thermostat Cool Stage 2
) W2 --- Thermostat Heat Stage 2
2
) Y1 --- Thermostat Cool Stage 1
2
27
Space Sensors —
The PremierLinkt 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 controller. T--56 provides same space temperature signal plus it allows for adjustment of space temperature setpoints from the face of the sensor by the occupants.
TB1 PL
SEN J6-7
SEN
Jumper
SET
SET
1
TB1
3
5
Fig. 45 -- PremierLink Controller T--56 Sensor
Connect Thermostat —
PL
J6-6
J6-5
C08213
2
SW1
3
45
SEN
61
RED(+)
WHT(GND)
BLK(-)
BRN (GND) BLU (SPT)
CCN COM
SENSOR WIRING
50TC
Fig. 42 -- T--55 Space Temperature Sensor Wiring
Connect T--55: See Fig. 42 for typical T-- 55 i nternal
connections. Connect the T--55 SEN t erminals to TB1 terminals 1 and 3 (see Fig. 43).
TB1 PL
SEN J6-7
SEN
1
3
Fig. 43 -- PremierLink Controller T--55 Sensor
Connect T--56: See Fig. 44 for T--56 i nternal connections.
Install a jumper between SEN and SET terminals as illustrated. Connect T--56 terminals to TB1 terminals 1, 3 and 5 (see Fig. 45).
2
SW1
3
45
SEN
61
RED(+)
WHT(GND)
BLK(-)
SET
BRN (GND) BLU (SPT)
BLK (T56)
CCN COM
SENSOR WIRING
JUMPER TERMINALS AS SHOWN
J6-6
C08201
C08212
A 7--wire thermostat connection requires a 24--v power source and a common connection. Use the R and C terminals on the CTB’s THERMOSTAT connection strip for these. Connect the thermostat’s Y1, Y2, W1, W2 and G terminals to the PremierLink controller at TB1 as shown in Fig. 46.
If the 50TC unit is equipped with factory--installed smoke detector(s), disconnect the factory BLU lead at TB1--6 (Y2) before conne cting the thermostat. Identify the BLU lead originating at CTB--DDC--1; disconnect at TB1--6 and tape off. Confirm that the second BLU lead at TB1--6 remains connected to the PremierLink controller at J4--8.
SPACE THERMOSTAT
R
GJ4-12
Y1
Y2
W1
W2
C
CTB THERMOSTAT
R
TB1
2
4
6
8
10
CTB
C
THERMOSTAT
PL
J4-10
J4-8
J4-6
J4-4
C08119
Fig. 46 -- Space Thermostat Connections
If the 50TC unit has an economizer system and free--cooling operation is required, a sensor representing Return Air Temperature must also be connected (field--supplied and installed). This sensor may be a T--55 Space Sensor (see Fig. 42) installed in the space or in the return duct, or it may be sensor PNO 33ZCSENSAT, installed in the return duct. Connect this sensor to TB1--1 and TB1--3 per Fig. 43.
Configure the Unit for Thermostat Mode —
Connect to the CCN bus using a CCN service tool and navigate to PremierLink Configuration screen for Operating Mode. Default setting is Sensor Mode (value 1). Change the value to 0 to reconfigure the controller for Thermostat Mode.
Cool Warm
Fig. 44 -- T--56 Internal Connections
C08202
When the PremierLink controller 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).
28
Economizer Controls
Indoor Air Quality (CO2)Sensor—
The indoor air quality sensor accessory monitors space carbon dioxide (CO monitor IAQ levels. Several types of sensors are available, for wall mounting in the space or in return duct, with and without LCD display, and in combination with space temperature sensors. Sensors use infrared technology to measure the levels of CO
The CO
sensors are all factory set for a range of 0 to
2
2000 ppm and a linear mA output of 4 to 20. Refer to the instructions supplied with the CO requirements and terminal locations. See Fig. 47 for typical CO
sensor wiring schematic.
2
) levels. This information is used to
2
present in the space air.
2
sensor for electrical
2
To connect the sensor to the control, identify the positive (4 to 20 mA) and ground (SIG COM) terminals on the sensor. See Fig. 47. Connect the 4--20 mA terminal to terminal TB1--9 and connect the SIG COM terminal to terminal TB1--11. See Fig. 48.
IAQ Sensor
SEN J5-5
COM
24 VAC
TB1
9
TB1
7
PL
J5-6
C08636
Fig. 48 -- Indoor CO2Sensor (33ZCSENCO2)
Connections
Refer to the PremierLinkt Installation, Start--up, and Configuration Instructions, for detailed configuration information.
+
0-10VDC
-
SIG COM
+
4-20mA
ALARM
NC COM
RELAY
}
CONTACTS
NO
24 VAC
HG
OR
+
-
24 VDC
2
1
J3 J4
5
1
4
32
7
6
8
C08635
Fig. 47 -- Indoor/Outdoor Air Quality (CO2)Sensor
(33ZCSENCO2) -- Typical Wiring Diagram
To accurately monitor the quality of the air in the conditioned air space, locate the sensor near a return--air grille (if present) so it senses the concentration of CO leaving the space. The sensor should be mounted in a location to avoid direct breath contact.
Do not mount the IAQ sensor in drafty areas such as near supply ducts, open windows, fans, or over heat sources. Allow at least 3 ft (0.9 m) between the sensor and any corner. Avoid mounting the sensor where it is influenced by the supply air; the sensor gives inaccurate readings if the supply air is blown directly onto the sensor or if the supply air does not have a chance to mix with the room air before it is drawn into the return airstream.
Wiring the Indoor Air Quality Sensor: For each sensor, use two 2--conductor 18 AWG (American Wire Gage) twisted-- pair cables (unshielded) to connect the separate isolated 24 vac power source to the sensor and to connect the sensor to the control board terminals.
Outdoor Air Quality Sensor (PNO 33ZCSENCO2 plus weatherproof enclosure) —
The outdoor air CO dioxide (CO
) levels in the outside ventilation air and
2
sensor is designed to monitor carbon
2
interface with the ventilation damper in an HVAC system. The OAQ sensor is packaged with an outdoor cover. See Fig. 49. The outdoor air CO
sensor must be located in the
2
economizer outside air hood.
2
COVER REMOVED SIDE VIEW
Fig. 49 -- Outdoor Air Quality Sensor Cover
Wiring the Outdoor Air CO
Sensor: A dedicated
2
power supply is required for this sensor. A two--wire cable is required to wire the dedicated power supply for the sensor. The two wires should be connected to the power supply and terminals 1 and 2.
To connect the sensor to the control, identify the positive (4 to 20 mA) and ground (SIG COM) terminals on the OAQ sensor. See Fig. 47. 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. See Fig. 50.
50TC
C07135
29
OAQ Sensor/RH Sensor
SEN J5-2
COM
24 VAC
TB1
13
TB1
11
Fig. 50 -- Outdoor CO2Sensor Connections
Space Relative Humidity Sensor or Humidistat Connections —
Space Relative Humidity Sensor connections: The
accessory space relative humidity sensor (33ZCSEN S R H -0 2) is installed on an interior wall to measure the relative humidity of the air within the occupied space.
The use of a standard 2 X 4 inch electrical box to accommodate the wiring is recommended for installation. The sensor can be mounted directly on the wall, if acceptable by local codes.
50TC
!
CAUTION
UNIT DAMAGE HAZARD
Failure to follow this caution may result in permanent damage to the sensor.
DO NOT clean or touch the sensing element with chemical solvents as they can permanently damage the sensor.
!
CAUTION
UNIT PERFORMANCE HAZARD
Failure to follow this caution will result in inaccurate sensor rea dings.
DO NOT mount the sensor in drafty areas such as near heating or air--conditioning ducts, open windows, fans, or over heat sources such as bas ebo ard heaters, radiators, or wall--mounted dimmers. Sensors mounted in those areas will produce inaccurate readings.
If the sensor is installed directly on a wall service, install the humidity sensor using 2 screws and 2 hollow wall anchors (field--supplied). Do not over tighten screws. See Fig. 51.
MOUNTING HOLES
Io
Gnd
Vin
Vo
WIRING OPENING
PL
J5-3
C08275
The sensor must be mounted vertically on the wall. The Carrier logo should be orie ntated correctly when the sensor is properly mounted.
Avoid corner locations. Allow at least 4 ft between the sensor and any corner. Airflow near corners tends to be reduced, resulting in erratic sensor readings. The sensor should be vertically mounted approximately 5 ft up from the floor, beside the space temperature sensor.
For wiring distances up to 500 feet, use a 3--conductor, 18 or 20 AWG cable. A CCN communication cable can be used, although the shield is not required. The shield must be removed from the sensor end of the cable if this cable is used. See Fig. 52 for wiring details.
TB1-7
TB1-13
RED
BLACK
Io VoVin Gnd
C11180
Fig. 52 -- Space Relative Humidity Sensor Connection
The power for the sensor is provided by the PremierLinkt controller on terminal J5--4 (+33 to +35vdc).
To wire the sensor:
1. At the sensor, remove 4 inches fo the jacket from the
cable. Strip ¼ inch of insulation from each conductor. Route the cable through the wire clearance opening in the center of the sensor. See Fig. 51.
2. Connect a field--supplied BLACK wire to the sensor screw terminal marked Vin.
3. Connect a field --supplied RED wire into the sensor screw terminal marked Io.
4. Connect the field--supplied RED wire from the sensor to TB1--13.
5. Connect the field--supplied BLACK wire from the sensor to TB1--7.
Smoke Detector/Fire Shutdown (FSD) —
This function is available only when the PremierLink controller is configured for (Space) Sensor Mode. The unit is factory--wired for PremierLink FSD operation when the PremierLink controller is factory-- installed.
SW2
123456
ON
C11084
Fig. 51 -- Space Relative Humidity Sensor Installation
On 50TC 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 controller communicates the smoke detector’s tripped status to the CCN building control. See Fig. 39 and 40, the PremierLink controller wiring schematics.
30
Filter Status Switch —
Remote Occupied Switch —
This functi on is available only when the PremierLinkt controller is configured for (Space) Sensor Mode.
PremierLink controller can monitor return filter status in two ways: By monitoring a field--supplied/installed filter pressure switch or via supply fan runtime hours.
Using switch input: Install the dirty filter pressure switch according to switch manufacturer’s instructions, to measure pressure drop across the unit’s return filters. Connect one side of the switch’s NO contact set to CTB’s THERMOSTAT--R terminal. Connect the other side of the NO contact set to TB1--10. Setpoint for Dirty Filter is set at the switch. See Fig. 53.
Filter Switch (NO, close on rising pressure (high drop))
CTB
Thermostat
R
TB1
10
PL
J4-4
C08216
Fig. 53 -- PremierLink Controller Filter Switch
Connection
When the filter switch’s NO contact set closes as filter pressure drop increases (indicating dirt--laden filters), the input signal to the PremierLink controller causes the filter status point to read “DIRTY”.
The PremierLink controller permits a remote timeclock to override the control’s on--board occupancy schedule and place the unit into Occupied mode. This function may also provide a “Door Switch” time delay function that will terminate cooling and heating functions after a 2--20 minute delay.
Connect one side of the NO contact set on the timeclock to CTB’s THERMOSTAT --R terminal. Connect the other side of the timeclock contact to the unit’s TB1--2 terminal (see Fig. 55).
Remote Occupied
Time Clock
CTB
Thermostat
R
TB1
2
PL
J4-12
C08214
Fig. 55 -- PremierLink Controller Wiring Remote
Occupied
Refer to the PremierLink Controller Installation, Start--up, and Configuration Instructions for instructions for additional information on configuring the PremierLink control for Door Switch timer function.
Power Exhaust (output) —
Connect the accessory Power Exhaust contactor coils(s) per Fig. 56.
50TC
Using Filter Timer Hours: Refer to the PremierLink Controller Installation, Start--up, and Configuration Instructions for instructions on using the Premi erLink Configuration screens and on unit alarm sequence.
Supply Fan Status Switch —
The PremierLink controller can monitor supply fan operation through a field--supplied/installed differential pressure switch. This sequence will prevent (or interrupt) operation of unit cooling, heating and economizer functions until the pressure switch contacts are closed indicating proper supply fan operation.
Install t he differential pressure switch in the supply fan section according to switch manufacturer’s instructions. Arrange the switch contact to be open on no flow and to close as pressure rises indicating fan operation.
Connect one side of the switch’s NO contact set to CTB’s THERMOSTAT--R terminal. Connect the other side of the NO contact set to TB1--8. Setpoint for Supply Fan Status is set at the switch. See Fig. 54.
Fan (Pressure) Switch (NO, close on rise in pressure)
CTB
Thermostat
R
TB1
8
PL
J4-6
C08118
Fig. 54 -- PremierLink Contr o ller Wiring Fan Pressur e
Switch Connection
Power Exhaust
PEC
TAN
TB1
15
PL
J8-3
CTB
THERMOSTAT
GRA
C
C08120
Fig. 56 -- PremierLink Power Exhaust Output
Connection
NOTE: The Power Exhaust and Humidi--MiZer
R
system options can not be used with PremierLink controller at the same time as both options require connection at TB1--15 (AUX OUT).
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 pins must be wired to the signal ground pins. Wiring connections for CCN must be made at the 3--pin plug.
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 band.
31
Communications Bus Wire Specifications: The CCN Communication Bus wiring is field--supplied and field--i nstalled. It consists of shielded 3--conductor c able with drain (ground) wire. The cable selected must be identical to the CCN Communication Bus wire used for the entire network.
See Table 6 for recommended cable.
Table 6 – Recommended Cables
MANUFACTURER CABLE PART NO.
Alpha 2413 or 5463
American A22503
Belden 8772
Columbia 02525
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*,
50TC
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
-- 2 0 _Cto60_C is required. Do not run communica tion wire in the same conduit as or next to any AC voltage wiring.
The communication bus shields must be tied together at each system element. If the communication bus is entirely within one building, the resulting continuous shield must be connected to ground at only one single point. If the communication bus cable exits from one building and enters another building, the shields must be connected to the grounds at a lightning suppressor in each building (one point only).
Connecting CCN bus:
NOTE: When connecting the c ommunication bus cable,
a color c ode system for the entire network is recommended to simplify installation and checkout. See Table 7 for the recommended color code.
Table 7 – Color Code Recommendations
SIGNAL TYPE
+ Red 1
Ground White 2
--- Black 3
CCN BUS WIRE
COLOR
CCN PLUG PIN
NUMBER
Connect the CCN (+) lead (typically RED) to the unit’s TB1--12 terminal. Connect the CCN (ground) lead (typically WHT) to the unit’s TB1--14 terminal. Connect the CCN (--) lead (typically BLK) to the unit’s TB1--16 terminal. See Fig. 57.
CCN Bus
+ (RED)
GND (WHT)
– (BLK)
TB1
12
TB1
14
TB1
16
PL
J2-1
J2-2
J2-3
C08276
Fig. 57 -- PremierLinkt Controller CCN Bus
Connections
* Teflon is a registered trademark of DuPont.
32
RTU Open Controller System
The RTU Open controller is factory--mounted in the 50TC unit’s main control box, t o the left of the CTB. See Fig. 59 or 60. Factory wiring is completed through harnesses connected to the CTB. Field--connections for RTU Open controller sensors will be made at the Phoenix connectors on the RTU Open board. The factory--installed RTU Open controller includes the supply--air temperature (SAT) sensor. The outdoor air temperature (OAT) sensor is included in the FIOP/accessory EconoMi$er
R
2 package.
The RTU Open controller is an integrated component of the Carrier rooftop unit. Its internal application
Input_2 (CO2/RH)
Input_1 (CO2/RH)
+24 VDC
Gnd
Gnd
+24 VDC
Board Power
24 VAC IN
J4
BO-2 (W2)
BO-1 (G)
Gnd
Input_3 (X)
programming provides optimum performance and energy efficiency. The RTU Open controller enables the unit to run in 100% stand--alone control mode, Carrier’s i--Vu Open network, or a Third Party Building Automation System (BAS). On--board DIP switches allow you to select your protocol (and baud rate) of choice among t he four most popular protocols in use today: BACnet*, Modbus
{
, Johnson N2 and LonWorks**. (See Fig. 58.)
Refer to Table 8, RTU Open Controller Inputs and Outputs for locations of a ll connections to the RTU Open board.
NOTE: The RTU Open controller acts as an intelligent imbedded thermostat. A room thermostat cannot be used with the RTU Open controller.
Input _8 (Enthalpy)
Input_5 (SMK)
Input_4 (R)
BO-5 (Y1)
BO-4 (Y2)
BO-3 (W1)
(SAT)
Gnd
(OAT)
Gnd
AO-1 (ECON)
24 VAC
0-10VDC
(AO-1)
Configurable - Input_5
Configurable - Input_3
Input_9 (Humidistat)
24 VAC
24 VAC
24 VAC
Configurable - Input_8
24 VAC
J3
J2J1
4-20mA
R
50TC
3-Volt Lithium Battery
LonWorks Option Card Port
Example set for BACnet MS/TP and 76.8K baud (1, 2, and 4 ON) Recommended for all i-Vu Open installations
J15
J5 J5
BO-1 BO-2 BO-3 BO-4 BO-5
J22
AO-2
GND
(2-10V)
J13
BO-6
BO-7
BO-8
J12
J17
Network Comm
J20
Protocol Selector SPT (temp input) BACnet, Modbus, or N2
*Remove both for 0-5V
SPT (common)
SPT (offset input)
J19
(LON connection J15)
Fig. 58 -- RTU Open Multi --Protocol Controller Board
J14
J22
VFD Output
J11
BO-6 (H) Humidimizer
BO-7
(Reversing Valve/High Speed Fan/Y3)
BO-8 (Power Exhaust)
C14129
* BACnet is a registered trademark of ASHRAE (American Society of
Heating, Refrigerating and Air --- Conditioning Engineers).
{
Modbus is a registered trademark of Schneider Electric.
** LonWorks is a registered trademark of Echelon Corporation.
33
50TC
Fig. 59 -- RTU Open Controller System Wiring Diagram
34
C150012
50TC
Fig. 60 -- RTU Open Controller System Wiring Diagram with Humidi--MiZerRSystem
35
C150013
Table 8 – RTU Open Controller Inputs and Outputs
POINT NAME
Space Temp / Zone Temp zone_temp AI (10K Thermistor) J2 0 --- 1 a n d 2 Analog Input 10
Supply Air Tempe rature sa_temp AI (10K Thermistor) J 2 --- 1 a nd 2 Analog Input 6
Outside Air Temperature oa_temp AI (10K Thermistor) J 2 --- 3 a n d 4 Analog Input 7
Space Temperature Of fset Pot stpt_adj_offset AI (100K Potentiometer) J 2 0 --- 3 a n d 4 Analog Input 11
Safety Chain Feedback safety_status BI (24 VAC) J 1 --- 9 Binary Input 4
Compressor Safety Status
Fire Shutd own Status firedown_status BI (24 VAC) J1 --- 1 0 Binary Input 5
Enthalpy Status enthalpy_status BI (24 VAC) J 2 --- 6 a n d 7 Binary Input 8
Humidistat Input Status humstat_status BI (24 VAC) J 5 --- 7 a n d 8 Binary Input 9
Zone Temperature n/a n/a J 1 3 --- 1 --- 4 Rnet
Indoor Air CO2 iaq A I ( 4 --- 2 0 m A )
Outdoor Air CO2 oaq AI ( 4 --- 2 0 m A ) Analog Input 1
Space Relative Humidity space _rh A I ( 4 --- 2 0 m A ) Analog Input 10
Supply Fan Status
Filter Status
Door Contact
Remote Occupancy input
IGC input
50TC
Economizer Output econ_o utput AO (4--- 20mA) J 2 --- 5 Analog Output 1
Supply Fan VFD vfd_output A O ( 2 --- 1 0 V d c ) J 2 2 --- 1 a nd 2 Analog Output 2
Supply Fan Relay sfan BO Relay (24VAC, 1A) J 1 --- 4 Binary Output 1 (G)
Cool 1 Relay State comp_1 BO Rela y (24VAC, 1A) J 1 --- 8 Binary Output 5 (Y1)
Cool 2 Relay State comp_2 BO Rela y (24VAC, 1A) J 1 --- 7 Binary Output 4 (Y2)
Cool 3 Relay State comp_3 BO Rela y (24VAC, 1A) J1 1 --- 5 a n d 6 Binary Output 7 (Y3)
Heat 1 Relay State heat_1 BO Relay (24VAC, 1A) J1 --- 6 Binary Output 3 (W1)
Heat 2 Relay State heat_2 BO Relay (24VAC, 1A) J1 --- 5 Binary Output 2 (W2)
Power Exhaust Relay State pexh BO Relay (24VAC, 1A) J11---2and3(N.O.) Binary Output 8 (PE)
Dehumidification Relay dehum BO Relay (24VAC, 1A) J11---7and8(N.O.) Binary Output 6
LEGEND
AI --- A n a l o g I n p u t AO --- A n a l o g O u t p u t BI --- B i n a r y I n p u t BO --- Binary Output
(1)
Safety Chain Feedback: 24Vac required at this terminal to provide “Run Enable” status. See Input/Output section for additional instructions.
(2)
These inputs are configurabl e. If installed, they take the place of the default input on the specific cha nnel. Se e appro priate Input Configuratio n Section for wiring and setup instructions.
(3)
P a r a l l e l p i n s J 5 --- 1 = J 2 --- 6 , J 5 --- 3 = J 1 --- 1 0 , J 5 --- 5 = J 1 --- 2 a r e u s e d f o r f i e l d i n s t a l l a t i o n .
(4)
Refer to the input configuration and accessory sections of the RTU Open Mult i --- Protocol Controller Controls, Start ---Up, Operation and Troubleshooti ng manual for more detail.
(2)
(2)
(2)
(2)
BACnet OBJECT
NAME
(1)
(2)
comp_status BI (24 VAC) J 1 --- 2 Binary Input 3
sfan_status BI (24 VAC)
filter_status BI (24 VAC) BinaryInput3,5,8,or9,exceptwhereintrinsicinputisused
door_contact_status BI (24 VAC) BinaryInput3,5,8,or9,exceptwhereintrinsicinputisused
occ_contact_status BI (24 VAC) BinaryInput3,5,8,or9,exceptwhereintrinsicinputisused
igcovr_status BI (24 VAC) Binary Input 9. Mandatory input on gas heat units.
TYPE OF I/O
DEDICATED INPUTS
CONFIGURABLE INPUTS
CONNECTION
PIN NUMBER(S)
J 4 --- 2 a n d 3 o r J 4 --- 5 a n d 6
J 5 --- 1 a n d 2 o r J 5 --- 3 a n d 4 , J 5 --- 5 a n d 6 o r J 5 --- 7 a n d 8
OUTPUTS
(4)
(3)
CHANNEL DESIGNATION
Analog Input 2
BinaryInput3,5,8,or9,exceptwhereintrinsicinputisused
The RTU Open cont roller requires the use of a Carrier space sensor. A standard thermostat cannot be used with the RTU Open system.
Supply Air Temperature (SAT) Sensor —
On FIOP--equipped 50TC unit, the unit is supplied with a supply--air temperature (SA T) sensor (33ZCSENSAT). This sensor is a tubular probe type, approx 6--inches (152 mm) in length. It is a nominal 10--k ohm thermistor.
The SAT is factory--wired. The SAT probe is wire--tied to the supply--air opening (on the horizontal opening end) in its shipping position. Remove the sensor for installation. Re--position the sensor in the flange of the supply--a ir opening or in the supply air duct (as required by local
1
codes). Drill or punch a
/2--in. hole in the fla nge or duct. Use two field--supplied, self--drilling screws to secure the sensor probe in a horizontal orientation. See Fig. 41.
Outdoor Air Temperature (OAT) Sensor —
R
The OAT is factory--mounted in the EconoMi$er
2(FIOP or accessory). It is a nominal 10k ohm thermistor attached to an eyelet mounting ring.
EconoMi$er2 —
The RTU Open controller is used with EconoMi$er2 (factory-- installed option or field--installed accessory) for outdoor air management. The damper position is controlled directly by the RTU Open controller; the EconoMi$er2 unit has no inte rnal logic device.
Outdoor air management functions can be enhanced with field--installation of these accessory control devices:
Enthalpy control (outdoor air or differential sensors) Space CO Outdoor air CO
sensor
2
sensor
2
36
Field Connections
Field connections for accessory sensors a nd input devices are made the RTU Open controller, at plugs J1, J2, J4, J5, J11 and J20. All field--control wiring that connects to the RTU Open controller must be routed through the raceway built into the corner post as shown in Fig. 26. 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 Open controller. Connect to the wires to the removable Phoenix connectors and then reconnect the connectors to the board.
Space Temperature (SPT) Sensors —
There a re two types of SPT sensors avail able from Carrie r, resistive input non-communicating (T55, T56, and T59) and Rnet communicating (SPS, SPPL, SPP , and SPPF) sensors. Each type has a variety of options consisting of: timed override button, set point adjustment, a LCD screen, and communication tie in. Space temperature can be also be written to from a building network or zoning system. However, it is still recommended that return air duct sensor be installed to allow stand-alone operation for back-up. Refer to the configuration section for details on controller configurations associate d with space sensors.
S 33ZCT55SPT, space temperature sensor with override
button (T--55)
S 33ZCT56SPT, space temperature sensor with override
button and setpoint adjustment (T--56)
S 33ZCT59SPT, space temperature sensor with LCD
(liquid crystal display) screen, override button, and setpoint adjustment (T--59)
Use 20 gauge wire to conne ct the sensor to the controller. The wire is suitable for distances of up to 500 ft. Use a three--conductor shielded ca ble for the sensor and setpoint adjustment connections. If the setpoint adjustment (slidebar) is not required, then an unshielded, 18 or 20 gauge, two--conductor, twisted pair cable may be used.
SEN J20-1
SEN
Jumper
SET
SET
J20-2
J20-3
C08461
Fig. 62 -- RTU Open Controller T--56 Sensor
Connections
Connect T--59: The T--59 space sensor requires a
separate, isolated power supply of 24 VAC. See Fig. 63 for internal connections at the T--59. Connect the SEN terminal (BLU) to the RTU Open controller at J20--1. Connect the COM terminal (BRN) to J20--2. Connect the SET terminal (STO or BLK) to J20--3.
BLK (STO)
BRN (COM)
BLU (SPT)
OR SET SEN
OPB COM- PWR+
24 VAC
NOTE: Must use a separate isolated transformer.
J20-3
J20-2
J20-1
SENSOR WIRING
POWER WIRING
C10291
Fig. 63 -- Space Temperature Sensor Typical Wiring
(33ZCT59SPT)
50TC
Connect T--55: See Fig. 42 for typical T-- 55 i nternal connections. Connect the T--55 SEN terminals to RTU Open c ontroller J20--1 and J20--2. See Fig. 61.
SEN
SEN
J20-1
J20-2
C08460
Fig. 61 -- RTU Open Controller T--55 Sensor
Connections
Connect T--56: See Fig. 44 for T--56 i nternal connections.
Install a jumper between SEN and SET terminals as illustrated. Connect T--56 terminals to RTU Open controller at J20--1, J20-- 2 and J20--3 per Fig. 62.
Indoor Air Quality (CO
)Sensor—
2
The indoor air quality sensor accessory monitors space carbon dioxide (CO
) levels. This information is used to
2
monitor IAQ levels. Several types of sensors are available, for wall mounting in the space or in return duct, with and without LCD display, and in combination with space temperature sensors. Sensors use infrared technology to measure the levels of CO
The CO
sensors are all factory set for a range of 0 to
2
present in the space air.
2
2000 ppm and a linear mA output of 4 to 20. Refer to the instructions supplied with the CO
sensor for electrical
2
requirements and terminal locations. See Fig. 47 for typical CO
sensor wiring schematic.
2
To accurately monitor the quality of the air in the conditioned air space, locate the sensor near a return--air grille (if present) so it senses the concentration of CO leaving the space. The sensor should be mounted in a location to avoid direct breath contact.
37
2
Do not mount the IAQ sensor in drafty areas such as near supply ducts, open windows, fans, or over heat sources. Allow at least 3 ft (0.9 m) between the sensor and any corner. Avoid mounting the sensor where it is influenced by the supply air; the sensor gives inaccurate readings if the supply air is blown directly onto the sensor or if the supply air does not have a chance to mix with the room air before it is drawn into the return airstream.
Wiring the Indoor Air Quality Sensor: For each sensor, use two 2--conductor 18 AWG (American Wire Gage) twisted-- pair cables (unshielded) to connect the separate isolated 24 vac power source to the sensor and to connect the sensor to the control board terminals.
To connect the sensor to the control, identify the positive (4 to 20 mA) and ground (SIG COM) terminals on the sensor. See Fig. 47. Connect the 4--20 mA te rminal to the RTU Open controller at J4--2 and connect the SIG COM terminal to the RTU Open controller a t J4--3. See Fig. 64.
50TC
IAQ Sensor
SEN
COM
24 VAC
Fig. 64 -- RTU Open Controller / Indoor CO2Sensor
(33ZCSPTCO2--01 or 33ZCSPTCO2LCD--01)
Connections
Outdoor Air Quality Sensor (P/N 33ZCSPTCO2--01 or 33ZCSPTCO2LCD--01 plus weatherproof enclosure —
The outdoor air CO dioxide (CO
) levels in the outside ventilation air and
2
sensor is designed to monitor carbon
2
interface with the ventilation damper in an HVAC system. The OAQ sensor is packaged with an outdoor cover. See Fig. 49. The outdoor air CO
sensor must be located in the
2
economizer outside air hood.
Wiring the Outdoor Air CO2Sensor: A dedicated power supply is required for this sensor. A two--wire cable is required to wire the dedicated power supply for the sensor. The two wires should be connected to the power supply and terminals 1 and 2.
J4-2
J4-3
C08462
Space Relative Humidity Sensor or Humidistat —
R
Humidi-- MiZer
System Control Wiring: In units
equipped with the Humidi--MiZer option there are two loose wires loose in the control box (one PNK and one PNK/BLK) used to control the dehumidification function of the unit. These wires are meant to be tied to a space humidistat or thermidistat on an electromechanical unit. On RTU Open controller equipped units these wires must be connected to J1 1--7 and 8 to allow the Open board to operate the dehumidification function for the unit. Disconnect the J11 Phoenix style connector from the board and use the plug screws to secure the wires as follows: secure the PNK/B LK wires at pin 7 and the PNK wires at pin 8, and then reconnect the plug to the board at J11.
Relative Humidity Sensors (Space or Duct Mounted):
The accessory space humidity sensor (33ZCSENSRH-02) or duct humidi ty sensor (33ZCSENDRH-02) is used to measure the relative humidity of air within the space or return air duc t. The RH reading is used to control the Humidi--MiZer option of the rooftop unit. For wiring distances up to 500 ft (152 m), use a 3--conductor, 18 or 20 AWG shielded cable. The shie ld must be removed from the sensor end of the cable and grounded at the unit end. The current loop power for sensor is provided by the RTU Open controller as 24vdc. Refer to the instructions supplied with the RH sensor for the electrical requirements and terminal locations. RTU Open controller configurations must be changed after adding an RH sensor. See Fig. 66 and 67 for typical RH sensor wiring.
S J4--1 or J4--4 = 24vdc loop power
S J4--2 or J4--5 = 4--20mA signal input
NOTE: The factory default for dehumidification control is normally open humidistat.
MOUNTING HOLES
Io
Gnd
Vin
Vo
WIRING OPENING
To connect the sensor to the control, identify the positive (4 to 20 mA) and ground (SIG COM) terminals on the OAQ sensor. See Fig. 49. Connect the 4 to 20 mA terminal to the RTU Open controller at J4--5. Connect the SIG COM terminal to RTU Open J4--6. See Fig. 65.
OAQ Sensor
SEN
COM
24 VAC
J4-5
J4-6
C11086
Fig. 65 -- RTU Open Controller / Outdoor CO2Sensor
(33ZCSPTCO2--01 or 33ZCSPTCO2LCD--01)
Connections
SW2
123456
ON
Vin - J4-1 or J4-4 24Vdc Io - J4-2 or J4-5 -20mA output
Fig. 66 -- Space Relative Humidity Sensor Typical Wiring
38
C11087
J4-1 or J4-4 + 24 VDC Supply Voltage
J4-2 or J4-5 (-)4 to 20 mA Current Loop Output to RTU Open controller
4-20mAVAC
VDC
or
GND 0-5V
0-10V
SPAN
or
123456
ON
Relative Humidity Sensor (Polarized Male Connector)
ZERO
Fig. 67 -- Duct Relative Humidity Sensor Typical Wiring
Humidistat: The accessory humidistat provides the RTU
Open controller insight to the relative humidity in the space. The humidistat reads the RH level in the space and compares it to its setpoint to operate a dry contact. The humidistat is a dedicated input on the confi gurable input 9 and tells the RTU Open controller when the RH level is HIGH or LOW. The normal condition for humidity is LOW. A normally open humidistat is the factory default control for the Humidi--MiZer
R
system option.
To wire in the field:
S J5--8 = 24 VAC source for dry contact
S J5--7 = Signal input
Smoke Detector/Fire Shutdown (FSD) —
On 50TC 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 RTU Open controller communicates the smoke detector’s tripped status to the BAS building control. See Fig. 59 and 60 (RTU Open Controller wiring schematics).
The Fire Shutdown Switch configuration,
MENU
ConfigInputsinput 5, identifies the normally
open status of this input when there is no fire alarm.
Connecting Discrete Inputs —
Filter Status: The filter status accessory is a
field--installed accessory. This accessory detects plugged filters. When installing this accessory, the unit must be configured for filter status by setting
MENU
ConfigInputsinput3,5,8,or9to Filter
Status and norm ally open (N/O) or normally closed (N/C). Input 8 or 9 is recommended for easy of installation. Refer to Fig. 58 and Fig. 59 or 60 for wire terminations at J5.
C12756
Fan Status: The fan status accessory is a field--installed accessory. This accessory det ects when the indoor fan is blowing air. When installing this accessory, the unit must be configured for fan status by setting
MENU
ConfigInputsinput3,5,8,or9to Fan
Status and norm ally open (N/O) or normally closed (N/C). Input 8 or 9 is recommended for easy of installation. Refer to Fig. 58 and Fig. 59 or 60 for wire terminations at J5.
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input3,5,8,or9to Remote
Occupancy and normally open (N/O) or normally closed (N/C).
Also set MENU
Schedulesoccupancy sour ce to DI
on/off. Input 8 or 9 is recommended for ease of installation. Refer to Fig. 58 and Fig. 59 for wire terminations at J5.
Power Exhaust (output): The relay used by the RTU Open controller board to control power exhaust is a dry contact which means it does not have 24vac. This 24vac must be connected to the relay to allow it to operate the power exhaust relay in the PE accessory. A 24vac source must be provided to J11--2 on the RTU Open controller board. This can be provided by the unit’s transformer from various sources. T he “R” terminal on the unit’s low voltage terminal board (LVTB) is a logical source. Refer to Fig. 58 and Fig. 59 or 60 for wire terminations at J11.
50TC
39
Communication Wiring -- Protocols
The RTU Open controller can be set to communicate on four different protocols: BACnet, Modbus, N2, and
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 applications. In the BAS application, many different protocols are used, depending on manufacturer. Protocols do not change the function of a controller; just make the front end user different.
LonWorks. Switch 3 (SW3) on the board is used to set protocol and baud rate. Switches 1 and 2 (SW1 and SW2) are used to set the board’s network address. See Fig. 68 and 69 for protocol switch settings and address switches. The third party connection to the RT U Open controlle r is through plug J19. See Fig. 70 for wiring.
NOTE: Power must be cycled after changing the SW1--3 switch settings.
Refer to the RTU Open v3 Integration Guide for more detailed information on protocols, third party wiring, and networking.
SW3 Protocol Selection
PROTOCOL DS8 DS7 DS6 DS5 DS4 DS3 DS2 DS1
BACnet MS/TP
50TC
(Master)
Modbus (Slave)
N2 (Slave)
LonWorks Unused ON ON OFF ON OFF OFF ON
Unused OFF OFF OFF ON OFF Select Baud Select Baud
Unused OFF OFF ON ON OFF Select Baud Select Baud
Unused OFF OFF OFF ON ON OFF OFF
NOTE: DS = Dip Switch BACnet MS/TP SW3 example shown
Baud Rate Selections
BAUD RATE DS2 DS1
9600 OFF OFF
19,200 ON OFF
38,400 OFF ON
76,800 ON ON
Fig. 68 -- RTU Open Controller SW3 Dip Switch Settings
C07166
C10815
Fig. 69 -- RTU Open Controller Address Switches
Fig. 70 -- Network Wiring
C10816
40
Local Access
Wall Mounted Equipment Toucht Interface
The Equipment Touch interface is a wall--mounted interface used to connect to the RTU Open controller to access the control information, read sensor values, and maintenance. This is an accessory interface that does not come with the RTU Open controller. Wire the Equipment Touch interface to the RTU Open controller’s J13 local access port. There are 2 password protected levels in the display (User and Admin). See the Equipment Touch Installation and Setup Guide for more information. See Appendix A in the guide for navigation and screen content.
Field Assistant
Field Assistant is a computer program included with the purchase of the Tech Tool Kit (USB-TKIT). This is a field Tech Tool to set-up, service, or download application software to the RTU Open controller and includes a USB Link Cable. The link cable connects a USB port to the J12 local access port. The Field Assistant’s menu structure is similar and functions the same as i--Vu
R
controller. See
Fig. 71.
RTU Open Controller Troubleshooting —
Communication LEDs The LEDs indicate if the
controller is speaking to the devices on the network. The LEDs should reflect communication traffic based on the baud rate set. The higher the baud rate the more solid the LEDs will appear. See Table 9.
Connect to computer’s USB port
Access
Port
P1 P1
J12
P5 P5
Connect to
the Local
USB Link Kit
Access port
Fig. 71 -- PC Running Field Assistant
LOCAL
ACCESS
-
CR2032
J15
+
COMM
on
MSB LSB
SW1 SW2
OPTION
SW3
PORT
J12
mA
UI-11
RTU Open Controller
*Therm
RNET
mA
UI-10
*Therm
J13
+12 DVC Rnet­Rnet+ GND
GND
50TC
GND
TXRX
J20
C14131
41
Table 9 – LEDs
The LE Ds on the RTU Open controller show the status of certain functions
If this LED is on... Status is...
Power The RTU Open controller has power
Rx The RTU Open controller is receiving data from the network segment
Tx The RTU Open controller is transmitting data over the network segment
BO# The binary output is active
The Run and Error LEDs indicate control module and network status
If Run LED shows... And Error LED shows... Status is...
2 flashes per second Off Normal
2 flashes per second 2 flashes, alternating with Run LED Five minute auto--- restart delay after system error
2 flashes per second 3flashes,thenoff Control module has just been formatted
2 flashes per second 4 flashes, then pause Two or more devices on this network have the
same MSTP network address
2 flashes per second On Exec halted after frequent system errors or
control programs halted
5 flashes per second On Exec start --- up aborted, Boot is running
50TC
5 flashes per second Off Firmware transfer in progress, Boot is running
7 flashes per second 7 flashes per second, alternating
with Run LED
14 flashes per second 14 flashes per second,
alternating with Run LED
On On Failure. Tr y the following solutions:
Ten second recovery period after brownout
Brownout
S Turn the RTU Open controller off, then on. S Format the RTU Open controller. S Download memory to the RTU Open controller. S Replace the RTU Open controller.
NOTE: Refer to the RTU Open Multi--Protocol Controller Controls, Start--Up, Operation and Troubleshooting manual
for complete configuration of RTU Open controller, operating sequences and troubleshooting information. Refer to the RTU Open v3 Integration Guide for details on configuration and troubleshooting of connected networks. Have a copy of these manuals available at unit start--up.
Outdoor Air Enthalpy Control (PNO
The enthalpy control (33CSENTHSW) is available as a field--installed access ory to be used with the EconoMi$er damper system. The outdoor air enthalpy sensor is part of the enthalp y control. (The separate field--installed accessory return air enthalpy sensor (33CSENTSEN) is required for differential enthalpy control. See Fig. 72.)
Locate the enthalpy control in the economizer next to the Actuator Motor. Locate two GRA leads in the factory harness and connect the gray lead labeled “ESL” to the terminal labeled “LOW”. See Fig. 72. Connect the enthalpy control power input terminals to economizer actuator power leads RED (connect to 24V) and BLK (connect to GND).
33CSENTHSW)
R
Enthalpy Switch
24V
GND
LOW
RED
BLK
GRA
Factory Wiring Harness
PL6-1 (24-V)
PL6-4 (COM)
CTB ECON
7
(P’LINK: to J4-2) or (RTU Open: to J2-6)
C11160
Fi g. 72 -- Enthalpy Switch (33CSENTHSW) Connections
2
The outdoor enthalpy changeover setpoint is set at the enthalpy controller.
Differential Enthalpy Control —
Differential enthalpy control is provided by sensing and comparing the outside air and return air enthalpy conditions. Install the outdoor air enthalpy control as described above. Add and install a return air enthalpy sensor.
42
Return Air Enthalpy Sensor —
Mount the return--air enthalpy sensor (33CSENTSEN) in the return--air section of the economizer. The return air sensor is wired to the enthal py controller (33CSENTHSW). See Fig. 73.
Return Air Smoke Detector (as shipped)
– 4-20 Main
+ VDC Out
Outside Air Enthalpy Switch
+ 24-36 VDC In
– 4-20 Main Out
24V
GND
LOW
RED
BLK
GRA
Return Air Enthalpy Sensor
PL6-1 (24-V)
PL6-4 (COM)
CTB ECON
7
(P’LINK: to J4-2) or (RTU Open: to J2-6)
C11161
Fig. 73 -- Outside and Return Air Enthalpy Sensor
Wiring
Smoke Detectors
Smoke detectors are available as factory--installed options on 50TC models. Smoke detectors may be specified for Supply Air only or for Return Air without or with economizer or in combination of Supply Air and Return Air. All components necessary for operation are factory--provided and mounted. The unit is factory--configured for immediate smoke detector shutdown operation; additional wiring or modifications to unit terminal board may be necessary to complete the unit and smoke detector configuration to meet project requirements.
Units equipped with factory--optional Return Air smoke detectors require a relocation of the sensor module at unit installation. See Fig. 74 for the as shipped location.
50TC
C12282
Fig. 74 -- Return Air Smoke Detector, Shipping Position
Completing Installation of Return Air Smoke Sensor:
1. Unscrew the two screws holding the Return Air Smoke Detector assembly. See Fig. 75, Step 1. Save the screws.
2. Turn the assembly 90 degrees and then rotate end to end. Make sure that the elbow fitting is pointing down. See Fig. 75, Step 2.
3. Screw the sensor and detector plate into its operating position using screws from Step 1. See Fig. 75, Step 3.
4. Connect the flexible tube on the sampling inlet to the sampling tube on the basepan.
Additional Application Data —
Refer to the Application Data sheet titled Factory Installed Smoke Detectors for Small and Medium Rooftop Units2to25Tonsfor discussions on additional control
features of these smoke detectors including multiple unit coordination.
Step 1 Step 2 Step 3
Fig. 75 -- Completing Installation of Return Air Smoke Sensor
43
C12283
48HC50TC
DISC. SIZE
MAX
BRKR
HACR
FUSE or
MCA
DISC. SIZE
MAX
BRKR
HACR
FUSE or
MCA
DISC. SIZE
Table 10 – Unit Wire/Fuse or HACR Breaker Sizing Data with Single Speed Indoor Fan Motor
MAX
BRKR
HACR
FUSE or
MCA
DISC. SIZE
FLA LRA FLA LRA FLA LRA FLA LRA
NO P.E. w/ P.E. (pwrd fr/unit) NO P.E. w/ P.E. (pwrd fr/unit)
MAX
BRKR
HACR
FUSE or
MCA
FLA
Nom
(kW)
ELEC. HTR NO C.O. or UNPWR C.O. w/ PWRD C .O.
IFM
117A 7.8/10.4 21.7/25.0 40/40 60/60 38/38 191/191 44/44 60/60 43/43 195/195 45/45 60/60 44/44 196/196 49/49 60/60 48/48 200/200
110A 12.0/16. 0 33.4/38.5 49/55 60/60 44/50 191/191 53/60 60/60 49/55 195/195 55/61 60/70 50/56 196/196 59/66 60/70 54/60 200/200
111A 18.6/24. 8 51.7/59.7 72/81 80/90 65/74 191/191 76/86 80/90 70/79 195/195 78/88 80/90 71/80 196/196 82/92 90/100 75/84 200/200
112A 24.0/32. 0 66.7/77.0 90/103 90/110 83/94 191/191 95/108 100/110 87/99 195/195 96/109 100/110 88/100 196/196 101/114 110/125 93/104 200/200
117A 7.8/10.4 21.7/25.0 43/43 60/60 42/42 244/244 47/47 60/60 46/46 248/248 48/48 60/60 47/47 249/249 52/53 60/60 52/52 253/253
110A 12.0/16. 0 33.4/38.5 53/59 60/60 48/54 244/244 57/64 60/70 52/58 248/248 59/65 60/70 54/59 249/249 63/70 70/70 58/64 253/253
111A 18.6/24. 8 51.7/59.7 76/85 80/90 69/78 244/244 80/90 80/90 73/83 248/248 82/91 90/100 75/84 249/249 86/96 90/100 79/88 253/253
112A 24.0/32. 0 66.7/77.0 94/107 100/110 86/98 244/244 99/112 100/125 91/102 248/248 100/113 100/125 92/104 249/249 105/118 110/125 96/108 253/253
117A 7.8/10.4 21.7/25.0 48/48 60/60 48/47 260/260 52/52 60/60 52/51 264/264 53/54 60/60 53/52 265/265 57/58 80/80 58/57 269/269
110A 12.0/16. 0 33.4/38.5 59/64 60/70 54/59 260/260 64/69 70/70 58/63 264/264 65/70 70/70 60/64 265/265 70/75 80/80 64/69 269/269
111A 18.6/24. 8 51.7/59.7 82/91 90/100 75/83 260/260 87/96 90/100 79/88 264/264 88/97 90/100 81/89 265/265 93/102 100/110 85/93 269/269
112A 24.0/32. 0 66.7/77.0 101/113 110/125 92/103 260/260 106/117 110/125 97/108 264/264 107/119 110/125 98/109 265/265 112/123 125/125 102/113 269/269
116B 13.9 16.7 25 30 22 113 27 30 24 115 27 30 25 115 30 30 27 117
113B 16.5 19.8 28 30 26 113 31 35 28 115 31 35 28 115 33 35 30 117
114B 27.8 33.4 45 50 41 113 48 50 43 115 48 50 44 115 50 60 46 117
115B 33.0 39.7 53 60 49 113 56 60 51 115 56 60 51 115 58 60 53 117
128B 41.7 50.2 66 70 61 113 69 70 63 115 69 70 63 115 71 80 65 117
116B 13.9 16.7 27 30 24 140 29 30 26 142 29 30 27 142 32 35 29 144
113B 16.5 19.8 30 30 28 140 33 35 30 142 33 35 30 142 35 40 32 144
114B 27.8 33.4 47 50 43 140 50 50 45 142 50 50 46 142 52 60 48 144
115B 33.0 39.7 55 60 50 140 58 60 53 142 58 60 53 142 60 60 55 144
128B 41.7 50.2 68 70 63 140 71 80 65 142 71 80 65 142 73 80 67 144
116B 13.9 16.7 29 30 27 148 32 35 29 150 32 35 29 150 34 35 31 152
113B 16.5 19.8 33 35 30 148 35 35 32 150 36 40 33 150 38 40 35 152
NONE --- --- 40 60 38 191 44 60 43 195 45 60 44 196 49 60 48 200
CRHEATER** **00
TYPE
N O M . V --- P h --- H Z
UNIT
STD
NONE --- --- 43/43 60/60 42/42 244 47/47 60/60 46/46 248 48/48 60/60 47/47 249 52/52 60/60 52/52 253
112A+117A 31.8/42.4 88.4/102.0 117/134 125/150 108/123 191/191 122/139 125/150 112/128 195/195 123/140 125/150 113/128 196/196 128/145 150/150 118/133 200/200
NONE --- --- 48/47 60/60 48/47 260 52/51 60/60 52/51 264 53/52 60/60 53/52 265 57/56 80/80 58/57 269
112A+117A 31.8/42.4 88.4/102.0 121/138 125/150 111/127 244/244 126/143 150/150 116/131 248/248 127/144 150/150 117/132 249/249 132/149 150/150 121/137 253/253
MED
2 0 8 / 2 3 0 --- 3 --- 6 0
HIGH
NONE --- --- 20 30 19 113 22 30 21 115 22 30 21 115 24 30 23 117
112A+117A 31.8/42.4 88.4/102.0 128/144 150/150 117/132 260/260 133/149 150/150 122/136 264/264 134/150 150/150 123/137 265/265 139/155 150/175 127/142 269/269
NONE --- --- 22 30 21 140 23 30 23 142 24 30 23 142 26 30 25 144
STD
MED
4 6 0 --- 3 --- 6 0
5 0 T C * A 0 8 ( 1 --- s t a g e c o o l )
114B 27.8 33.4 50 50 46 148 52 60 48 150 53 60 48 150 55 60 50 152
NONE --- --- 24 30 23 148 26 30 25 150 26 30 26 150 28 35 28 152
HIGH
118A 18.0 17.3 24 25 22 89 29 30 26 93 26 30 24 91 31 35 28 95
119A 36.0 34.6 46 50 42 89 50 60 46 93 48 50 44 91 53 60 48 95
118A 18.0 17.3 26 30 23 104 30 30 27 108 28 30 25 106 32 35 29 110
119A 36.0 34.6 47 50 43 104 52 60 47 108 49 50 45 106 54 60 49 110
118A 18.0 17.3 29 30 26 118 34 35 31 122 31 35 28 120 36 40 33 124
115B 33.0 39.7 58 60 53 148 60 60 55 150 61 70 56 150 63 70 58 152
128B 41.7 50.2 71 80 65 148 73 80 67 150 74 80 68 150 76 80 70 152
NONE --- --- 15 20 14 89 18 25 18 93 16 20 16 91 20 25 20 95
NONE --- --- 16 20 15 104 20 25 19 108 17 25 17 106 21 25 21 110
STD
MED
119A 36.0 34.6 51 60 46 118 55 60 51 122 53 60 48 120 58 60 53 124
NONE --- --- 19 25 18 118 22 30 23 122 20 25 20 120 24 30 24 124
HIGH
5 7 5 --- 3 --- 6 0
See “Legend and Notes for Tables 10 and 11” on page 55.
44
DISC. SIZE
MAX
BRKR
HACR
FUSE or
MCA
DISC. SIZE
MAX
BRKR
HACR
FUSE or
MCA
DISC. SIZE
48HC50TC
Tabl e 1 0 - - Unit Wire/Fuse or HACR Breaker Sizing Data with Single Speed Indoor Fan Motor (cont)
ELEC. HTR NO C.O. or UNPWR C.O. w/ PWRD C .O.
MAX
BRKR
HACR
FUSE or
MCA
DISC. SIZE
FLA LRA FLA LRA FLA LRA FLA LRA
NO P.E. w/ P.E. (pwrd fr/unit) NO P.E. w/ P.E. (pwrd fr/unit)
MAX
BRKR
HACR
FUSE or
MCA
FLA
Nom
(kW)
IFM
117A 7.8/10.4 21.7/25.0 39/39 50/50 41/40 193/193 43/43 50/50 45/45 197/197 44/44 50/50 46/46 198/198 48/49 60/60 51/51 202/202
110A 12.0/16. 0 33.4/38.5 49/55 50/60 44/50 193/193 53/60 60/60 49/55 197/197 55/61 60/70 50/56 198/198 59/66 60/70 54/60 202/202
111A 18.6/24. 8 51.7/59.7 72/81 80/90 65/74 193/193 76/86 80/90 70/79 197/197 78/88 80/90 71/80 198/198 82/92 90/100 75/85 202/202
112A 24.0/32. 0 66.7/77.0 90/103 90/110 83/94 193/193 95/108 100/110 87/99 197/197 96/109 100/110 88/100 198/198 101/114 110/125 93/104 202/202
117A 7.8/10.4 21.7/25.0 42/42 50/50 44/44 246/246 46/47 50/50 49/49 250/250 47/48 60/60 50/50 251/251 51/53 60/60 54/54 255/255
110A 12.0/16. 0 33.4/38.5 53/59 60/60 48/54 246/246 57/64 60/70 52/58 250/250 59/65 60/70 54/59 251/251 63/70 70/70 58/64 255/255
111A 18.6/24. 8 51.7/59.7 76/85 80/90 69/78 246/246 80/90 80/90 73/83 250/250 82/91 90/100 75/84 251/251 86/96 90/100 79/88 255/255
112A 24.0/32. 0 66.7/77.0 94/107 100/110 86/98 246/246 99/112 100/125 91/102 250/250 100/113 100/125 92/104 251/251 105/118 110/125 96/108 255/255
117A 7.8/10.4 21.7/25.0 48/48 60/50 50/49 262/262 51/52 60/60 55/54 266/266 52/54 60/60 56/55 267/267 56/58 60/60 60/59 271/271
110A 12.0/16. 0 33.4/38.5 59/64 60/70 54/59 262/262 64/69 70/70 58/63 266/266 65/70 70/70 60/64 267/267 70/75 70/80 64/69 271/271
111A 18.6/24. 8 51.7/59.7 82/91 90/100 75/83 262/262 87/96 90/100 79/88 266/266 88/97 90/100 81/89 267/267 93/102 100/110 85/93 271/271
112A 24.0/32. 0 66.7/77.0 101/113 110/125 92/103 262/262 106/117 110/125 97/108 266/266 107/119 110/125 98/109 267/267 112/123 125/125 102/113 271/271
116B 13.9 16.7 25 25 22 95 27 30 24 97 27 30 25 97 30 30 27 99
113B 16.5 19.8 28 30 26 95 31 35 28 97 31 35 28 97 33 35 30 99
114B 27.8 33.4 45 50 41 95 48 50 43 97 48 50 44 97 50 60 46 99
115B 33.0 39.7 53 60 49 95 56 60 51 97 56 60 51 97 58 60 53 99
128B 41.7 50.2 66 70 61 95 69 70 63 97 69 70 63 97 71 80 65 99
116B 13.9 16.7 27 30 24 122 29 30 26 124 29 30 27 124 32 35 29 126
113B 16.5 19.8 30 30 28 122 33 35 30 124 33 35 30 124 35 40 32 126
114B 27.8 33.4 47 50 43 122 50 50 45 124 50 50 46 124 52 60 48 126
115B 33.0 39.7 55 60 50 122 58 60 53 124 58 60 53 124 60 60 55 126
128B 41.7 50.2 68 70 63 122 71 80 65 124 71 80 65 124 73 80 67 126
116B 13.9 16.7 29 30 27 130 32 35 29 132 32 35 29 132 34 35 31 134
113B 16.5 19.8 33 35 30 130 35 35 32 132 36 40 33 132 38 40 35 134
NONE --- --- 39 50 41 193 43 50 45 197 44 50 46 198 48 60 51 202
CRHEATER** **00
TYPE
N O M . V --- P h --- H Z
UNIT
STD
NONE --- --- 42/42 50/50 44/44 246 46/46 50/50 49/49 250 47/47 60/60 50/50 251 51/51 60/60 54/54 255
112A+117A 31.8/42.4 88.4/102.0 117/134 125/150 108/123 193/193 122/139 125/150 112/128 197/197 123/140 125/150 113/129 198/198 128/145 150/150 118/133 202/202
NONE --- --- 48/47 60/50 50/49 262 51/51 60/60 55/54 266 52/52 60/60 56/55 267 56/55 60/60 60/59 271
112A+117A 31.8/42.4 88.4/102.0 121/138 125/150 111/127 246/246 126/143 150/150 116/131 250/250 127/144 150/150 117/132 251/251 132/149 150/150 121/137 255/255
MED
208/230---3--- 60
HIGH
NONE --- --- 18 20 19 95 20 25 21 97 21 25 21 97 22 25 23 99
112A+117A 31.8/42.4 88.4/102.0 128/144 150/150 117/132 262/262 133/149 150/150 122/136 266/266 134/150 150/150 123/137 267/267 139/155 150/175 127/142 271/271
NONE --- --- 20 25 21 122 22 25 23 124 22 25 23 124 24 30 25 126
STD
MED
4 6 0 --- 3 --- 6 0
50TC*D08 (2--- stage cool)
114B 27.8 33.4 50 50 46 130 52 60 48 132 53 60 48 132 55 60 50 134
NONE --- --- 22 25 23 130 24 30 25 132 24 30 26 132 26 30 28 134
HIGH
118A 18.0 17.3 24 25 22 77 29 30 26 81 26 30 24 79 31 35 28 83
119A 36.0 34.6 46 50 42 77 50 60 46 81 48 50 44 79 53 60 48 83
118A 18.0 17.3 26 30 23 92 30 30 27 96 28 30 25 94 32 35 29 98
119A 36.0 34.6 47 50 43 92 52 60 47 96 49 50 45 94 54 60 49 98
118A 18.0 17.3 29 30 26 106 34 35 31 110 31 35 28 108 36 40 33 112
115B 33.0 39.7 58 60 53 130 60 60 55 132 61 70 56 132 63 70 58 134
128B 41.7 50.2 71 80 65 130 73 80 67 132 74 80 68 132 76 80 70 134
NONE --- --- 13 15 13 77 17 20 17 81 14 15 15 79 18 20 19 83
NONE --- --- 14 15 14 92 18 20 19 96 16 20 16 94 19 25 21 98
STD
MED
119A 36.0 34.6 51 60 46 106 55 60 51 110 53 60 48 108 58 60 53 112
NONE --- --- 17 20 17 106 21 25 22 110 19 20 19 108 23 25 24 112
HIGH
575---3---60
See “Legend and Notes for Tables 10 and 11” on page 55.
45
48HC50TC
DISC. SIZE
MAX
BRKR
HACR
FUSE or
MCA
DISC. SIZE
MAX
BRKR
HACR
FUSE or
MCA
DISC. SIZE
Tabl e 1 0 - - Unit Wire/Fuse or HACR Breaker Sizing Data with Single Speed Indoor Fan Motor (cont)
ELEC. HTR NO C.O. or UNPWR C.O. w/ PWRD C .O.
MAX
BRKR
HACR
FUSE or
MCA
DISC. SIZE
FLA LRA FLA LRA FLA LRA FLA LRA
NO P.E. w/ P.E. (pwrd fr/unit) NO P.E. w/ P.E. (pwrd fr/unit)
MAX
BRKR
HACR
FUSE or
MCA
FLA
Nom
(kW)
IFM
117A 7.8/10.4 21.7/25.0 46/46 60/60 43/43 222/222 49/49 60/60 48/48 226/226 50/50 60/60 49/49 227/227 54/54 80/80 53/53 231/231
110A 12.0/16. 0 33.4/38.5 49/55 60/60 44/50 222/222 53/60 60/60 49/55 226/226 55/61 60/70 50/56 227/227 59/66 80/80 54/60 231/231
111A 18.6/24. 8 51.7/59.7 72/82 80/90 65/75 222/222 76/86 80/90 70/79 226/226 78/88 80/90 71/80 227/227 82/92 90/100 75/84 231/231
112A 24.0/32. 0 66.7/77.0 90/103 90/110 83/95 222/222 95/108 100/110 87/99 226/226 96/109 100/110 88/100 227/227 101/114 110/125 93/104 231/231
117A 7.8/10.4 21.7/25.0 47/47 60/60 45/45 260/260 51/51 60/60 50/49 264/264 52/52 60/60 51/51 265/265 56/56 80/80 55/55 269/269
110A 12.0/16. 0 33.4/38.5 51/57 60/60 46/52 260/260 56/62 60/70 51/56 264/264 57/63 60/80 52/58 265/265 62/68 80/80 56/62 269/269
111A 18.6/24. 8 51.7/59.7 74/83 80/90 67/76 260/260 78/88 80/90 72/81 264/264 80/89 80/90 73/82 265/265 84/94 90/100 77/86 269/269
112A 24.0/32. 0 66.7/77.0 92/105 100/110 85/96 260/260 97/110 100/110 89/101 264/264 98/111 100/125 90/102 265/265 103/116 110/125 95/106 269/269
117A 7.8/10.4 21.7/25.0 51/51 60/60 50/50 289/289 55/55 80/80 54/54 293/293 56/56 80/80 55/55 294/294 60/60 80/80 59/59 298/298
110A 12.0/16. 0 33.4/38.5 55/62 60/70 51/56 289/289 60/67 80/80 55/61 293/293 61/68 80/80 56/62 294/294 66/73 80/80 60/66 298/298
111A 18.6/24. 8 51.7/59.7 78/88 80/90 72/81 289/289 83/93 90/100 76/85 293/293 84/94 90/100 77/86 294/294 89/99 90/100 82/91 298/298
112A 24.0/32. 0 66.7/77.0 97/110 100/110 89/101 289/289 102/115 110/125 93/105 293/293 103/116 110/125 94/106 294/294 108/121 110/125 99/111 298/298
116B 13.9 16.7 25 30 22 108 27 30 24 110 27 30 25 110 30 40 27 112
113B 16.5 19.8 28 30 26 108 31 35 28 110 31 35 28 110 33 40 30 112
114B 27.8 33.4 45 50 41 108 48 50 43 110 48 50 44 110 50 60 46 112
115B 33.0 39.7 53 60 49 108 56 60 51 110 56 60 51 110 58 60 53 112
128B 41.7 50.2 66 70 61 108 69 70 63 110 69 70 63 110 71 80 65 112
116B 13.9 16.7 26 30 23 127 28 30 25 129 28 30 26 129 31 40 28 131
113B 16.5 19.8 29 30 27 127 32 35 29 129 32 40 29 129 34 40 31 131
114B 27.8 33.4 46 50 42 127 49 50 44 129 49 50 45 129 51 60 47 131
115B 33.0 39.7 54 60 50 127 57 60 52 129 57 60 52 129 59 60 54 131
128B 41.7 50.2 67 70 62 127 70 70 64 129 70 70 64 129 72 80 66 131
116B 13.9 16.7 28 30 25 142 30 40 27 144 31 40 28 144 33 40 30 146
113B 16.5 19.8 32 35 29 142 34 40 31 144 35 40 31 144 37 40 33 146
NONE --- --- 46 60 43 222 49 60 48 226 50 60 49 227 54 80 53 231
CRHEATER** **00
TYPE
N O M . V --- P h --- H Z
UNIT
STD
NONE --- --- 47/47 60/60 45/45 260 51/51 60/60 50/49 264 52/52 60/60 51/51 265 56/56 80/80 55/55 269
112A+117A 31.8/42.4 88.4/102.0 117/134 125/150 108/123 222/222 122/139 125/150 112/128 226/226 123/140 125/150 113/129 227/227 128/145 150/150 118/133 231/231
NONE --- --- 51 60 50 289 55 80 54 293 56 80 55 294 60 80 59 298
112A+117A 31.8/42.4 88.4/102.0 120/136 125/150 110/125 260/260 124/141 125/150 114/129 264/264 126/142 150/150 115/131 265/265 130/147 150/150 119/135 269/269
MED
208/230---3--- 60
HIGH
NONE --- --- 23 30 22 108 25 30 24 110 25 30 24 110 27 40 26 112
112A+117A 31.8/42.4 88.4/102.0 124/141 125/150 114/129 289/289 129/146 150/150 118/134 293/293 130/147 150/150 119/135 294/294 135/152 150/175 124/139 298/298
NONE --- --- 24 30 23 127 26 30 25 129 26 30 25 129 28 40 27 131
STD
MED
4 6 0 --- 3 --- 6 0
50TC*A09 (1--- stage cool)
114B 27.8 33.4 49 50 45 142 51 60 47 144 52 60 47 144 54 60 49 146
NONE --- --- 26 30 25 142 28 40 27 144 28 40 27 144 30 40 29 146
HIGH
118A 18.0 17.3 24 30 22 91 29 30 26 95 26 30 24 93 31 35 28 97
119A 36.0 34.6 46 50 42 91 50 60 46 95 48 50 44 93 53 60 48 97
118A 18.0 17.3 25 30 22 95 29 30 27 99 27 30 24 97 31 35 29 101
119A 36.0 34.6 46 50 42 95 51 60 46 99 48 50 44 97 53 60 48 101
118A 18.0 17.3 26 30 23 106 30 30 27 110 28 30 25 108 32 35 29 112
115B 33.0 39.7 57 60 52 142 59 60 54 144 59 60 54 144 62 70 56 146
128B 41.7 50.2 70 70 64 142 72 80 66 144 73 80 66 144 75 80 68 146
NONE --- --- 19 30 17 91 22 30 22 95 20 30 19 93 24 30 24 97
NONE --- --- 19 30 18 95 23 30 22 99 21 30 20 97 24 30 24 101
STD
MED
119A 36.0 34.6 47 50 43 106 52 60 47 110 49 50 45 108 54 60 49 112
NONE --- --- 20 30 19 106 24 30 23 110 21 30 21 108 25 30 25 112
HIGH
575---3---60
See “Legend and Notes for Tables 10 and 11” on page 55.
46
DISC. SIZE
MAX
BRKR
HACR
FUSE or
MCA
DISC. SIZE
MAX
BRKR
HACR
FUSE or
MCA
DISC. SIZE
48HC50TC
Tabl e 1 0 - - Unit Wire/Fuse or HACR Breaker Sizing Data with Single Speed Indoor Fan Motor (cont)
ELEC. HTR NO C.O. or UNPWR C.O. w/ PWRD C .O.
MAX
BRKR
HACR
FUSE or
MCA
DISC. SIZE
FLA LRA FLA LRA FLA LRA FLA LRA
NO P.E. w/ P.E. (pwrd fr/unit) NO P.E. w/ P.E. (pwrd fr/unit)
MAX
BRKR
HACR
FUSE or
MCA
FLA
Nom
(kW)
IFM
117A 7.8/10.4 21.7/25.0 40/40 50/50 42/42 208/208 44/44 50/50 46/46 212/212 45/45 50/50 47/47 213/213 49/49 60/60 52/52 217/217
110A 12.0/16. 0 33.4/38.5 49/55 50/60 44/50 208/208 53/60 60/60 49/55 212/212 55/61 60/70 50/56 213/213 59/66 60/70 54/60 217/217
111A 18.6/24. 8 51.7/59.7 72/81 80/90 65/75 208/208 76/86 80/90 70/79 212/212 78/88 80/90 71/80 213/213 82/92 90/100 75/85 217/217
112A 24.0/32. 0 66.7/77.0 90/103 90/110 83/95 208/208 95/108 100/110 87/99 212/212 96/109 100/110 88/100 213/213 101/114 110/125 93/104 217/217
117A 7.8/10.4 21.7/25.0 42/42 50/50 44/44 246/246 46/46 60/50 48/48 250/250 47/47 60/60 49/49 251/251 51/51 60/60 54/53 255/255
110A 12.0/16. 0 33.4/38.5 51/57 60/60 46/52 246/246 56/62 60/70 51/56 250/250 57/63 60/70 52/58 251/251 62/68 70/70 56/62 255/255
111A 18.6/24. 8 51.7/59.7 74/83 80/90 67/76 246/246 78/88 80/90 72/81 250/250 80/89 80/90 73/82 251/251 84/94 90/100 77/86 255/255
112A 24.0/32. 0 66.7/77.0 92/105 100/110 85/96 246/246 97/110 100/110 89/101 250/250 98/111 100/125 90/102 251/251 103/116 110/125 95/106 255/255
117A 7.8/10.4 21.7/25.0 46/46 50/50 48/48 275/275 50/50 60/60 52/52 279/279 51/51 60/60 54/54 280/280 54/56 60/60 58/58 284/284
110A 12.0/16. 0 33.4/38.5 55/62 60/70 51/56 275/275 60/67 60/70 55/61 279/279 61/68 70/70 56/62 280/280 66/73 70/80 60/66 284/284
111A 18.6/24. 8 51.7/59.7 78/88 80/90 72/81 275/275 83/93 90/100 76/85 279/279 84/94 90/100 77/86 280/280 89/99 90/100 82/91 284/284
112A 24.0/32. 0 66.7/77.0 97/110 100/110 89/101 275/275 102/115 110/125 93/105 279/279 103/116 110/125 94/106 280/280 108/121 110/125 99/111 284/284
116B 13.9 16.7 25 25 22 109 27 30 24 111 27 30 25 111 30 30 27 113
113B 16.5 19.8 28 30 26 109 31 35 28 111 31 35 28 111 33 35 30 113
114B 27.8 33.4 45 50 41 109 48 50 43 111 48 50 44 111 50 60 46 113
115B 33.0 39.7 53 60 49 109 56 60 51 111 56 60 51 111 58 60 53 113
128B 41.7 50.2 66 70 61 109 69 70 63 111 69 70 63 111 71 80 65 113
116B 13.9 16.7 26 30 23 128 28 30 25 130 28 30 26 130 31 35 28 132
113B 16.5 19.8 29 30 27 128 32 35 29 130 32 35 29 130 34 35 31 132
114B 27.8 33.4 46 50 42 128 49 50 44 130 49 50 45 130 51 60 47 132
115B 33.0 39.7 54 60 50 128 57 60 52 130 57 60 52 130 59 60 54 132
128B 41.7 50.2 67 70 62 128 70 70 64 130 70 70 64 130 72 80 66 132
116B 13.9 16.7 28 30 25 143 30 30 27 145 31 35 28 145 33 35 30 147
113B 16.5 19.8 32 35 29 143 34 35 31 145 35 35 31 145 37 40 33 147
NONE --- --- 40 50 42 208 44 50 46 212 45 50 47 213 49 60 52 217
CRHEATER** **00
TYPE
N O M . V --- P h --- H Z
UNIT
STD
NONE --- --- 42/42 50/50 44/44 246 46/46 60/50 48/48 250 47/47 60/60 49/49 251 51/51 60/60 54/53 255
112A+117A 31.8/42.4 88.4/102.0 117/134 125/150 108/123 208/208 122/139 125/150 112/128 212/212 123/140 125/150 113/129 213/213 128/145 150/150 118/133 217/217
NONE --- --- 46 50 48 275 50 60 52 279 51 60 54 280 54 60 58 284
112A+117A 31.8/42.4 88.4/102.0 120/136 125/150 110/125 246/246 124/141 125/150 114/129 250/250 126/142 150/150 115/131 251/251 130/147 150/150 119/135 255/255
MED
208/230---3--- 60
HIGH
NONE --- --- 19 20 19 109 21 25 21 111 21 25 22 111 23 25 24 113
112A+117A 31.8/42.4 88.4/102.0 124/141 125/150 114/129 275/275 129/146 150/150 118/134 279/279 130/147 150/150 119/135 280/280 135/152 150/175 124/139 284/284
NONE --- --- 20 25 20 128 21 25 22 130 22 25 23 130 24 25 25 132
STD
MED
4 6 0 --- 3 --- 6 0
50TC*D09 (2--- stage cool)
114B 27.8 33.4 49 50 45 143 51 60 47 145 52 60 47 145 54 60 49 147
NONE --- --- 21 25 22 143 23 25 24 145 24 25 25 145 25 30 27 147
HIGH
118A 18.0 17.3 24 25 22 85 29 30 26 89 26 30 24 87 31 35 28 91
119A 36.0 34.6 46 50 42 85 50 60 46 89 48 50 44 87 53 60 48 91
118A 18.0 17.3 25 25 22 89 29 30 27 93 27 30 24 91 31 35 29 95
119A 36.0 34.6 46 50 42 89 51 60 46 93 48 50 44 91 53 60 48 95
118A 18.0 17.3 26 30 23 100 30 30 27 104 28 30 25 102 32 35 29 106
115B 33.0 39.7 57 60 52 143 59 60 54 145 59 60 54 145 62 70 56 147
128B 41.7 50.2 70 70 64 143 72 80 66 145 73 80 66 145 75 80 68 147
NONE --- --- 16 20 16 85 19 25 20 89 17 20 18 87 21 25 22 91
NONE --- --- 16 20 16 89 20 25 20 93 18 20 18 91 21 25 22 95
STD
MED
119A 36.0 34.6 47 50 43 100 52 60 47 104 49 50 45 102 54 60 49 106
NONE --- --- 17 20 17 100 21 25 21 104 18 20 19 102 22 25 23 106
HIGH
575---3---60
See “Legend and Notes for Tables 10 and 11” on page 55.
47
48HC50TC
DISC. SIZE
MAX
BRKR
HACR
FUSE or
MCA
DISC. SIZE
MAX
BRKR
HACR
FUSE or
MCA
DISC. SIZE
Tabl e 1 0 - - Unit Wire/Fuse or HACR Breaker Sizing Data with Single Speed Indoor Fan Motor (cont)
ELEC. HTR NO C.O. or UNPWR C.O. w/ PWRD C .O.
MAX
BRKR
HACR
FUSE or
MCA
DISC. SIZE
FLA LRA FLA LRA FLA LRA FLA LRA
NO P.E. w/ P.E. (pwrd fr/unit) NO P.E. w/ P.E. (pwrd fr/unit)
MAX
BRKR
HACR
FUSE or
MCA
FLA
Nom
(kW)
IFM
117A 7.8/10.4 21.7/25.0 44/44 60/60 42/42 277/277 48/48 60/60 46/46 281/281 49/49 60/60 47/47 282/282 53/53 60/60 52/52 286/286
110A 12.0/16. 0 33.4/38.5 49/55 60/60 44/50 277/277 53/60 60/60 49/55 281/281 55/61 60/70 50/56 282/282 59/66 60/80 54/60 286/286
112A 24.0/32. 0 66.7/77.0 90/103 90/110 83/95 277/277 95/108 100/110 87/89 281/281 96/109 100/110 88/100 282/282 101/114 110/125 93/104 286/286
NONE --- --- 44 60 42 277 48 60 46 281 49 60 47 282 53 60 52 286
CRHEATER** **00
TYPE
N O M . V --- P h --- H Z
UNIT
STD
112A+117A 31.8/42.4 88.4/102.0 117/134 125/150 108/123 277/277 122/139 125/150 112/128 281/281 123/140 125/150 113/129 282/282 128/145 150/150 118/133 286/286
112A+110A 37.6/50.0 104.2/120.3 137/127 150/150 126/144 277/277 142/132 150/150 130/149 281/281 143/133 150/150 131/150 282/282 148/138 150/150 136/154 286/286
NONE --- --- 49 60 48 333 53 60 52 337 54 80 54 338 58 80 58 342
117A 7.8/10.4 21.7/25.0 49/49 60/60 48/48 333/333 53/53 60/60 52/52 337/337 54/54 80/80 54/54 338/338 58/58 80/80 58/58 342/342
110A 12.0/16. 0 33.4/38.5 55/62 60/70 51/56 333/333 60/67 60/80 55/61 337/337 61/68 80/80 56/62 338/338 66/73 80/80 60/66 342/342
MED
112A 24.0/32. 0 66.7/77.0 97/110 100/110 89/101 333/333 102/115 110/125 93/105 337/337 103/116 110/125 94/106 338/338 108/121 110/125 99/111 342/342
112A+117A 31.8/42.4 88.4/102.0 124/141 125/150 114/129 333/333 129/146 150/150 118/134 337/337 130/147 150/150 119/135 338/338 135/152 150/175 124/139 342/342
NONE --- --- 52/51 60/60 52/50 335 56/55 80/80 56/55 339 57/56 80/80 57/56 340 61/60 80/80 61/60 344
112A+110A 37.6/50.0 104.2/120.3 144/134 150/150 132/151 333/333 149/139 150/150 136/155 337/337 150/140 150/150 138/156 338/338 155/145 175/175 142/160 342/342
208/230--- 3--- 60
117A 7.8/10.4 21.7/25.0 52/51 60/60 52/50 335/335 56/55 80/80 56/55 339/339 57/56 80/80 57/56 340/340 61/60 80/80 61/60 344/344
110A 12.0/16. 0 33.4/38.5 59/64 60/70 54/59 335/335 64/69 80/80 58/63 339/339 65/70 80/80 60/64 340/340 70/75 80/80 64/69 344/344
112A 24.0/32. 0 66.7/77.0 101/113 110/125 92/103 335/335 106/117 110/125 97/108 339/339 107/119 110/125 98/109 340/340 112/123 125/125 102/113 344/344
HIGH
112A+117A 31.8/42.4 88.4/102.0 128/144 150/150 117/132 335/335 133/149 150/150 122/136 339/339 134/150 150/150 123/137 340/340 139/155 150/175 127/142 344/344
112A+110A 37.6/50.0 104.2/120.3 148/137 150/150 135/153 335/335 152/141 175/175 140/157 339/339 154/143 175/175 141/158 340/340 158/147 175/175 145/163 344/344
118A 18.0 17.3 25 25 22 109 29 30 27 113 27 30 24 111 35 35 29 115
119A 36.0 34.6 46 50 42 109 51 60 46 113 48 50 44 111 53 60 48 115
118A 18.0 17.3 26 30 23 120 30 30 27 124 28 30 25 122 32 35 29 126
119A 36.0 34.6 47 50 43 120 52 60 47 124 49 50 45 122 54 60 49 126
118A 18.0 17.3 29 30 26 134 34 35 31 138 31 35 28 136 36 40 33 140
116B 13.9 16.7 25 30 22 149 27 30 24 151 27 30 25 151 30 40 27 153
113B 16.5 19.8 28 30 26 149 31 35 28 151 31 35 28 151 33 40 30 153
115B 33.0 39.7 53 60 49 149 56 60 51 151 56 60 51 151 58 60 53 153
128B 41.7 50.2 66 70 61 149 69 70 63 151 69 70 63 151 71 80 65 153
129B 50.0 60.1 64 70 72 149 66 70 74 151 67 70 75 151 69 70 77 153
116B 13.9 16.7 28 30 25 177 30 40 27 179 31 40 28 179 33 40 30 181
113B 16.5 19.8 32 35 29 177 34 40 31 179 35 40 31 179 37 40 33 181
115B 33.0 39.7 57 60 52 177 59 60 54 179 59 60 54 179 62 70 56 181
128B 41.7 50.2 70 70 64 177 72 80 66 179 73 80 66 179 75 80 68 181
129B 50.0 60.1 67 80 75 177 69 80 77 179 70 80 78 179 72 80 80 181
116B 13.9 16.7 29 40 27 178 32 40 29 180 32 40 29 180 34 45 31 182
113B 16.5 19.8 33 40 30 178 35 40 32 180 36 40 33 180 38 45 35 182
115B 33.0 39.7 58 60 53 178 60 60 55 180 61 70 56 180 63 70 58 182
128B 41.7 50.2 71 80 65 178 73 80 67 180 74 80 68 180 76 80 70 182
HIGH
129B 50.0 60.1 69 80 76 178 71 80 79 180 71 80 79 180 74 80 81 182
NONE --- --- 18 25 17 109 22 30 21 113 19 30 19 111 23 30 23 115
NONE --- --- 19 25 18 120 22 30 22 124 20 30 20 122 24 30 24 126
118A+119A 54.0 50.2 55 60 62 109 60 60 66 113 57 60 64 111 62 70 68 115
STD
MED
NONE --- --- 23 30 22 149 25 30 24 151 25 30 24 151 27 40 26 153
STD
NONE --- --- 26 30 25 177 28 40 27 179 28 40 27 179 30 40 29 181
MED
NONE --- --- 27 40 26 178 29 40 28 180 29 40 29 180 31 45 31 182
4 6 0 --- 3 --- 6 0
5 0 T C * A 1 2 ( 1 --- s t a g e c o o l )
119A 36.0 34.6 51 60 46 134 55 60 51 138 53 60 48 136 58 60 53 140
NONE --- --- 21 30 21 134 25 30 25 138 23 30 23 136 27 30 27 140
118A+119A 54.0 50.2 56 60 63 120 61 70 67 124 58 60 65 122 63 70 69 126
575--- 3--- 60
118A+119A 54.0 50.2 59 70 66 134 64 70 71 138 62 70 68 136 55 70 73 140
HIGH
See “Legend and Notes for Tables 10 and 11” on page 55.
48
DISC. SIZE
MAX
BRKR
HACR
FUSE or
MCA
DISC. SIZE
MAX
BRKR
HACR
FUSE or
MCA
DISC. SIZE
48HC50TC
Tabl e 1 0 - - Unit Wire/Fuse or HACR Breaker Sizing Data with Single Speed Indoor Fan Motor (cont)
ELEC. HTR NO C.O. or UNPWR C.O. w/ PWRD C .O.
MAX
BRKR
HACR
FUSE or
MCA
DISC. SIZE
FLA LRA FLA LRA FLA LRA FLA LRA
NO P.E. w/ P.E. (pwrd fr/unit) NO P.E. w/ P.E. (pwrd fr/unit)
MAX
BRKR
HACR
FUSE or
MCA
FLA
Nom
(kW)
IFM
117A 7.8/10.4 21.7/25.0 44/44 50/50 46/46 258/258 48/48 60/60 50/50 262/262 49/49 60/60 51/51 263/263 53/53 60/60 56/56 267/267
110A 12.0/16. 0 33.4/38.5 49/55 50/60 46/50 258/258 53/60 60/60 50/55 262/262 55/61 60/70 51/56 263/263 59/66 60/70 56/60 267/267
112A 24.0/32. 0 66.7/77.0 90/103 90/110 83/95 258/258 95/108 100/110 87/99 262/262 96/109 100/110 88/100 263/263 101/114 110/125 93/104 267/267
NONE --- --- 44 50 46 258 48 60 50 262 49 60 51 263 53 60 56 267
CRHEATER** **00
TYPE
N O M . V --- P h --- H Z
UNIT
STD
112A+117A 31.8/42.4 88.4/102.0 117/134 125/150 108/123 258/258 122/139 125/150 112/128 262/262 123/140 125/150 113/129 263/263 128/145 150/150 118/133 267/267
112A+110A 37.6/50.0 104.2/120.3 137/127 150/150 126/144 258/258 142/132 150/150 130/149 262/262 143/133 150/150 131/150 263/263 148/138 150/150 136/154 267/267
NONE --- --- 50 60 52 314 53 60 56 318 54 60 57 319 58 70 62 323
117A 7.8/10.4 21.7/25.0 50/50 60/60 52/52 314/314 53/53 60/60 56/56 318/318 54/54 60/60 57/57 319/319 58/58 70/70 62/62 323/323
110A 12.0/16. 0 33.4/38.5 55/62 60/70 52/56 314/314 60/67 60/70 56/61 318/318 61/68 70/70 57/62 319/319 66/73 70/80 62/66 323/323
MED
112A 24.0/32. 0 66.7/77.0 97/110 100/110 89/101 314/314 102/115 110/125 93/105 318/318 103/116 110/125 94/106 319/319 108/121 110/125 99/111 323/323
112A+117A 31.8/42.4 88.4/102.0 124/141 125/150 114/129 314/314 129/146 150/150 118/134 318/318 130/147 150/150 119/135 319/319 135/152 150/175 124/139 323/323
NONE --- --- 53/52 60/60 55/54 316 56/55 60/60 60/59 320 57/56 70/60 61/60 321 61/60 70/70 65/64 325
112A+110A 37.6/50.0 104.2/120.3 144/134 150/150 132/151 314/314 149/139 150/150 136/155 318/318 150/140 150/150 138/156 319/319 155/145 175/175 142/160 323/323
208/230--- 3--- 60
117A 7.8/10.4 21.7/25.0 53/52 60/60 55/54 316/316 56/55 60/60 60/59 320/320 57/56 70/60 61/60 321/321 61/60 70/70 65/64 325/325
110A 12.0/16. 0 33.4/38.5 59/64 60/70 55/59 316/316 64/69 70/70 60/63 320/320 65/70 70/70 61/64 321/321 70/75 70/80 65/69 325/325
112A 24.0/32. 0 66.7/77.0 101/113 110/125 92/103 316/316 106/117 110/125 97/108 320/320 107/119 110/125 98/109 321/321 112/123 125/125 102/113 325/325
HIGH
112A+117A 31.8/42.4 88.4/102.0 128/144 150/150 117/132 316/316 133/149 150/150 122/136 320/320 134/150 150/150 123/137 321/321 139/155 150/175 127/142 325/325
112A+110A 37.6/50.0 104.2/120.3 148/137 150/150 135/153 316/316 152/141 175/175 140/157 320/320 154/143 175/175 141/158 321/321 158/147 175/175 145/163 325/325
118A 18.0 17.3 25 25 22 93 29 30 27 97 27 30 24 95 31 35 29 99
119A 36.0 34.6 46 50 42 93 51 60 46 97 48 50 44 95 53 60 48 99
118A 18.0 17.3 26 30 23 104 30 30 27 108 28 30 25 106 32 35 29 110
119A 36.0 34.6 47 50 43 104 52 60 47 108 49 50 45 106 54 60 49 110
118A 18.0 17.3 29 30 26 118 34 35 31 122 31 35 28 120 36 40 33 124
116B 13.9 16.7 25 25 23 123 27 30 25 125 27 30 25 125 30 30 27 127
113B 16.5 19.8 28 30 26 123 31 35 28 125 31 35 28 125 33 35 30 127
115B 33.0 39.7 53 60 49 123 56 60 51 125 56 60 51 125 58 60 53 127
128B 41.7 50.2 66 70 61 123 69 70 63 125 69 70 63 125 71 80 65 127
129B 50.0 60.1 64 70 72 123 66 70 74 125 67 70 75 125 69 70 77 127
116B 13.9 16.7 28 30 26 151 30 30 28 153 31 35 28 153 33 35 30 155
113B 16.5 19.8 32 35 29 151 34 35 31 153 35 35 31 153 37 40 33 155
115B 33.0 39.7 57 60 52 151 59 60 54 153 59 60 54 153 62 70 56 155
128B 41.7 50.2 70 70 64 151 72 80 66 153 73 80 66 153 75 80 68 155
129B 50.0 60.1 67 80 75 151 69 80 77 153 70 80 78 153 72 80 80 155
116B 13.9 16.7 29 30 27 152 32 35 29 154 32 35 29 154 34 35 32 156
113B 16.5 19.8 33 35 30 152 35 35 32 154 36 40 33 154 38 40 35 156
115B 33.0 39.7 58 60 53 152 60 60 55 154 61 70 56 154 63 70 58 156
128B 41.7 50.2 71 80 65 152 73 80 67 154 74 80 68 154 76 80 70 156
HIGH
129B 50.0 60.1 69 80 76 152 71 80 79 154 71 80 79 154 74 80 81 156
NONE --- --- 17 20 17 93 20 25 21 97 18 20 19 95 22 25 23 99
NONE --- --- 17 20 18 104 21 25 22 108 19 25 20 106 23 25 24 110
118A+119A 54.0 52.0 55 60 62 93 60 60 66 97 57 60 64 95 62 70 68 99
STD
MED
NONE --- --- 22 25 23 123 24 30 25 125 24 30 25 125 26 30 27 127
STD
NONE --- --- 25 30 26 151 26 30 28 153 27 30 28 153 29 35 30 155
MED
NONE --- --- 26 30 27 152 28 30 29 154 28 30 29 154 30 35 32 156
4 6 0 --- 3 --- 6 0
5 0 T C * D 1 2 ( 2 --- s t a g e c o o l )
119A 36.0 34.6 51 60 46 118 55 60 51 122 53 60 48 120 58 60 53 124
NONE --- --- 20 25 21 118 24 30 25 122 22 25 23 120 26 30 27 124
118A+119A 54.0 52.0 56 60 63 104 61 70 67 108 58 60 65 106 63 70 69 110
575--- 3--- 60
118A+119A 54.0 52.0 59 70 66 118 64 70 71 122 62 70 68 120 66 70 73 124
HIGH
See “Legend and Notes for Tables 10 and 11” on page 55.
49
48HC50TC
DISC. SIZE
MAX
BRKR
HACR
FUSE or
MCA
DISC. SIZE
MAX
BRKR
HACR
FUSE or
MCA
DISC. SIZE
Tabl e 1 0 - - Unit Wire/Fuse or HACR Breaker Sizing Data with Single Speed Indoor Fan Motor (cont)
ELEC. HTR NO C.O. or UNPWR C.O. w/ PWRD C .O.
MAX
BRKR
HACR
FUSE or
MCA
DISC. SIZE
FLA LRA FLA LRA FLA LRA FLA LRA
NO P.E. w/ P.E. (pwrd fr/unit) NO P.E. w/ P.E. (pwrd fr/unit)
MAX
BRKR
HACR
FUSE or
MCA
FLA
Nom
(kW)
IFM
117A 7.8/10.4 21.7/25.0 63/63 80/80 65/65 389/389 66/66 80/80 69/69 393/393 67/67 80/80 71/70 394/394 71/71 80/80 75/75 398/398
110A 12.0/16. 0 33.4/38.5 63/63 80/80 65/65 389/389 66/66 80/80 69/69 393/393 67/67 80/80 71/70 394/394 71/71 80/80 75/75 398/398
112A 24.0/32. 0 66.7/77.0 94/107 100/110 86/98 389/389 99/112 100/125 91/102 393/393 100/113 100/125 92/104 394/394 105/118 110/125 96/108 398/398
NONE --- --- 63/63 80/80 65/65 389 66/66 80/80 69/69 393 67/67 80/80 71/70 394 71/71 80/80 75/75 398
CRHEATER** **00
TYPE
N O M . V --- P h --- H Z
UNIT
STD
112A+117A 31.8/42.4 88.4/102.0 121/138 125/150 111/127 389/389 126/143 150/150 116/131 393/393 127/144 150/150 117/132 394/394 132/149 150/150 121/137 398/398
112A+110A 37.6/50.0 104.2/120.3 141/131 150/150 129/148 389/389 146/136 150/150 134/152 393/393 147/137 150/150 135/153 394/394 152/142 175/150 139/158 398/398
NONE --- --- 65 80 68 403 69 80 72 407 70 80 73 408 73 80 78 412
117A 7.8/10.4 21.7/25.0 65/65 80/80 68/68 403/403 69/69 80/80 72/72 407/407 70/70 80/80 73/73 408/408 73/73 80/80 78/78 412/412
110A 12.0/16. 0 33.4/38.5 65/65 80/80 68/68 403/403 69/69 80/80 72/72 407/407 70/70 80/80 73/73 408/408 73/73 80/80 78/78 412/412
MED
112A 24.0/32. 0 66.7/77.0 97/110 100/110 89/101 403/403 102/115 110/125 93/105 407/407 103/116 110/125 94/106 408/408 108/121 110/125 99/111 412/412
112A+117A 31.8/42.4 88.4/102.0 124/141 125/150 114/129 403/403 129/146 150/150 118/134 407/407 130/147 150/150 119/135 408/408 135/152 150/175 124/139 412/412
NONE --- --- 68/67 80/80 71/70 405 72/71 80/80 75/74 409 73/72 80/80 77/76 410 76/76 90/90 81/80 414
112A+110A 37.6/50.0 104.2/120.3 144/134 150/150 132/151 403/403 149/139 150/150 136/155 407/407 150/140 150/150 138/156 408/408 155/145 175/175 142/160 412/412
208/230--- 3--- 60208/230--- 3--- 60
117A 7.8/10.4 21.7/25.0 68/67 80/80 71/70 405/405 72/71 80/80 75/74 409/409 73/72 80/80 77/76 410/410 76/76 90/90 81/80 414/414
110A 12.0/16. 0 33.4/38.5 68/67 80/80 71/70 405/405 72/71 80/80 75/74 409/409 73/72 80/80 77/76 410/410 76/76 90/90 81/80 414/414
112A 24.0/32. 0 66.7/77.0 101/113 110/125 92/103 405/405 106/117 110/125 97/108 409/409 107/119 110/125 98/109 410/410 112/123 125/125 102/113 414/414
HIGH
112A+117A 31.8/42.4 88.4/102.0 128/144 150/150 117/132 405/405 133/149 150/150 122/136 409/409 134/150 150/150 123/137 410/410 139/155 150/175 127/142 414/414
112A+110A 37.6/50.0 104.2/120.3 148/137 150/150 135/153 405/405 152/141 175/175 140/157 409/409 154/143 175/175 141/158 410/410 158/147 175/175 145/163 414/414
118A 18.0 17.3 26 30 23 147 30 30 27 151 28 30 25 149 32 35 29 153
119A 36.0 34.6 47 50 43 147 52 60 47 151 49 50 45 149 54 60 48 153
118A 18.0 17.3 26 30 23 147 30 30 27 151 28 30 25 149 32 35 29 153
119A 36.0 34.6 47 50 43 147 52 60 47 151 49 50 45 149 54 60 49 153
118A 18..0 17.3 29 30 26 161 34 35 31 165 31 35 28 163 36 40 33 167
116B 13.9 16.7 29 35 30 193 31 40 32 195 31 40 33 195 33 40 35 197
113B 16.5 19.8 30 35 30 193 33 40 32 195 33 40 33 195 35 40 35 197
115B 33.0 39.7 55 60 50 193 58 60 53 195 58 60 53 195 60 60 55 197
128B 41.7 50.2 68 70 63 193 71 80 65 195 71 80 65 195 73 80 67 197
129B 50.0 60.1 66 70 74 193 68 80 76 195 69 80 76 195 71 80 79 197
116B 13.9 16.7 30 40 31 200 32 40 33 202 33 40 34 202 34 40 36 204
113B 16.5 19.8 32 40 31 200 34 40 33 202 35 40 34 202 37 40 36 204
115B 33.0 39.7 57 60 52 200 59 60 54 202 59 60 54 202 62 70 56 204
128B 41.7 50.2 70 70 64 200 72 80 66 202 73 80 66 202 75 80 68 204
129B 50.0 60.1 67 80 75 200 69 80 77 202 70 80 78 202 72 80 80 204
116B 13.9 16.7 31 40 33 201 33 40 35 203 34 40 35 203 35 45 37 205
113B 16.5 19.8 33 40 33 201 35 40 35 203 36 40 35 203 38 45 37 205
115B 33.0 39.7 58 60 53 201 60 60 55 203 61 70 56 203 63 70 58 205
128B 41.7 50.2 71 80 65 201 73 80 67 203 74 80 68 203 76 80 70 205
HIGH
129B 50.0 60.1 69 80 76 201 71 80 79 203 71 80 79 203 74 80 81 205
NONE --- --- 22 25 23 147 26 30 27 151 24 30 24 149 27 30 29 153
NONE --- --- 22 25 23 147 26 30 27 151 24 30 24 149 27 30 29 153
118A+119A 54.0 52.0 56 60 63 147 61 70 67 151 58 60 65 149 63 70 69 153
STD
MED
NONE --- --- 29 35 30 193 31 40 32 195 31 40 33 195 33 40 35 197
STD
NONE --- --- 30 40 31 200 32 40 33 202 33 40 34 202 34 40 36 204
MED
NONE --- --- 31 40 33 201 33 40 35 203 34 40 35 203 35 45 37 205
4 6 0 --- 3 --- 6 0
50TC*D14 (2--- stage cool)
119A 36.0 34.6 51 60 46 161 55 60 51 165 53 60 48 163 58 60 53 167
NONE --- --- 25 30 26 161 29 35 30 165 26 30 28 163 30 35 32 167
118A+119A 54.0 52.0 56 60 63 147 61 70 67 151 58 60 65 149 63 70 69 153
575--- 3--- 60
118A+119A 54.0 52.0 59 70 66 161 64 70 71 165 62 70 68 163 66 70 73 167
HIGH
See “Legend and Notes for Tables 10 and 11” on page 55.
50
DISC. SIZE
MAX
BRKR
HACR
FUSE or
MCA
DISC. SIZE
MAX
BRKR
HACR
FUSE or
MCA
DISC. SIZE
48HC50TC
MAX
BRKR
HACR
FUSE or
MCA
DISC. SIZE
FLA LRA FLA LRA FLA LRA FLA LRA
NO P.E. w/ P.E. (pwrd fr/unit) NO P.E. w/ P.E. (pwrd fr/unit)
MAX
BRKR
HACR
FUSE or
MCA
Table11–UnitWire/FuseorHACRBreakerSizing Data with Two Speed Indoor Fan Motor
FLA
Nom
(kW)
ELEC. HTR NO C.O. or UNPWR C.O. w/ PWRD C .O.
IFM
117A 7.8/10.4 21.7/25.0 40/40 50/50 41/41 197/197 44/43 50/50 46/46 201/201 45/45 50/50 47/47 202/202 48/49 60/60 51/51 206/206
110A 12.0/16. 0 33.4/38.5 49/56 50/60 45/51 197/197 54/60 60/60 49/55 201/201 55/62 60/70 51/56 202/202 60/66 60/70 55/61 206/206
111A 18.6/24. 8 51.7/59.7 72/82 80/90 66/75 197/197 77/87 80/90 70/79 201/201 78/88 80/90 72/81 202/202 83/93 90/100 76/85 206/206
112A 24.0/32. 0 66.7/77.0 91/104 100/110 83/95 197/197 96/108 100/110 88/99 201/201 97/110 100/110 89/101 202/202 102/114 110/125 93/105 206/206
117A 7.8/10.4 21.7/25.0 43/42 50/50 45/44 227/227 46/46 50/50 49/48 231/231 47/47 60/50 50/49 232/232 51/52 60/60 55/54 236/236
110A 12.0/16. 0 33.4/38.5 53/58 60/60 48/53 227/227 58/63 60/70 53/58 231/231 59/64 60/70 54/59 232/232 64/69 70/70 58/63 236/236
111A 18.6/24. 8 51.7/59.7 76/85 80/90 69/78 227/227 81/90 90/90 74/82 231/231 82/91 90/100 75/83 232/232 87/96 90/100 79/88 236/236
112A 24.0/32. 0 66.7/77.0 95/106 100/110 87/98 227/227 99/111 100/125 91/102 231/231 101/112 110/125 92/103 232/232 105/117 110/125 96/107 236/236
117A 7.8/10.4 21.7/25.0 48/48 60/50 50/49 262/262 51/52 60/60 55/54 266/266 52/54 60/60 56/55 267/267 56/58 60/60 60/59 271/271
110A 12.0/16. 0 33.4/38.5 59/64 60/70 54/59 262/262 64/69 70/70 58/63 266/266 65/70 70/70 60/64 267/267 70/75 70/80 64/69 271/271
111A 18.6/24. 8 51.7/59.7 82/91 90/100 75/83 262/262 87/96 90/100 79/88 266/266 88/97 90/100 81/89 267/267 93/102 100/110 85/93 271/271
112A 24.0/32. 0 66.7/77.0 101/113 110/125 92/103 262/262 106/117 110/125 97/108 266/266 107/119 110/125 98/109 267/267 112/123 125/125 102/113 271/271
116B 13.9 16.7 25 25 23 97 27 30 25 99 28 30 25 99 30 30 27 101
113B 16.5 19.8 29 30 26 97 31 35 28 99 32 35 29 99 34 35 31 101
114B 27.8 33.4 46 50 42 97 48 50 44 99 49 50 44 99 51 60 46 101
115B 33.0 39.7 54 60 49 97 56 60 51 99 56 60 52 99 59 60 54 101
128B 41.7 50.2 67 70 61 97 69 70 63 99 70 70 64 99 72 80 66 101
116B 13.9 16.7 26 30 24 113 28 30 26 115 29 30 26 115 31 35 28 117
113B 16.5 19.8 30 30 27 113 32 35 29 115 33 35 30 115 35 35 32 117
114B 27.8 33.4 47 50 43 113 49 50 45 115 50 50 45 115 52 60 47 117
115B 33.0 39.7 55 60 50 113 57 60 52 115 58 60 53 115 60 60 55 117
128B 41.7 50.2 68 70 62 113 70 70 64 115 71 80 65 115 73 80 67 117
116B 13.9 16.7 29 30 27 130 32 35 29 132 32 35 29 132 34 35 31 134
113B 16.5 19.8 33 35 30 130 35 35 32 132 36 40 33 132 38 40 35 134
NONE --- --- 40/40 50/50 41/41 197 44/43 50/50 46/46 201 45/44 50/50 47/47 202 48/48 60/60 51/51 206
CRHEATER** **00
TYPE
N O M . V --- P h --- H Z
UNIT
NONE --- --- 43/42 50/50 45/44 227 46/46 50/50 49/48 231 47/47 60/50 50/49 232 51/50 60/60 55/54 236
112A+117A 31.8/42.4 88.4/102.0 118/135 125/150 108/124 197/197 123/140 125/150 113/128 201/201 124/141 125/150 114/129 202/202 129/146 150/150 118/134 206/206
STD
NONE --- --- 48/47 60/50 50/49 262 51/51 60/60 55/54 266 52/52 60/60 56/55 267 56/55 60/60 60/59 271
112A+117A 31.8/42.4 88.4/102.0 122/138 125/150 112/126 227/227 126/142 150/150 116/131 231/231 128/144 150/150 117/132 232/232 132/148 150/150 121/136 236/236
MED
208/230--- 3--- 60
HIGH
NONE --- --- 19 20 19 97 20 25 21 99 21 25 22 99 23 25 24 101
112A+117A 31.8/42.4 88.4/102.0 128/144 150/150 117/132 262/262 133/149 150/150 122/136 266/266 134/150 150/150 123/137 267/267 139/155 150/175 127/142 271/271
NONE --- --- 20 25 20 113 21 25 22 115 22 25 23 115 24 25 25 117
STD
MED
460---3---60
5 0 T C * D 0 8 ( 2 --- s t a g e c o o l )
114B 27.8 33.4 50 50 46 130 52 60 48 132 53 60 48 132 55 60 50 134
NONE --- --- 22 25 23 130 24 30 25 132 24 30 26 132 26 30 28 134
HIGH
118A 18.0 17.3 26 30 23 79 30 30 27 83 28 30 25 81 32 35 29 85
119A 36.0 34.6 47 50 43 79 52 60 47 83 49 50 45 81 54 60 49 85
118A 18.0 17.3 28 30 25 92 32 35 29 96 30 30 27 94 35 35 31 98
119A 36.0 34.6 49 50 45 92 54 60 49 96 51 60 47 94 56 60 51 98
118A 18.0 17.3 30 30 27 106 35 35 31 110 32 35 29 108 37 40 33 112
115B 33.0 39.7 58 60 53 130 60 60 55 132 61 70 56 132 63 70 58 134
128B 41.7 50.2 71 80 65 130 73 80 67 132 74 80 68 132 76 80 70 134
NONE --- --- 14 15 14 79 18 20 19 83 16 20 16 81 19 25 21 85
NONE --- --- 16 20 16 92 19 25 21 96 17 20 18 94 21 25 23 98
STD
MED
119A 36.0 34.6 51 60 47 106 56 60 51 110 54 60 49 108 58 60 53 112
NONE --- --- 18 20 18 106 22 25 23 110 20 25 20 108 23 25 24 112
HIGH
575---3---60
See “Legend and Notes for Tables 10 and 11” on page 55.
51
48HC50TC
DISC. SIZE
MAX
BRKR
HACR
FUSE or
MCA
DISC. SIZE
MAX
BRKR
HACR
FUSE or
MCA
DISC. SIZE
Tab l e 11 -- Unit Wire/Fuse or HACR Breaker Sizing Data with Two Speed Indoor Fan Motor (cont)
ELEC. HTR NO C.O. or UNPWR C.O. w/ PWRD C .O.
MAX
BRKR
HACR
FUSE or
MCA
DISC. SIZE
FLA LRA FLA LRA FLA LRA FLA LRA
NO P.E. w/ P.E. (pwrd fr/unit) NO P.E. w/ P.E. (pwrd fr/unit)
MAX
BRKR
HACR
FUSE or
MCA
FLA
Nom
(kW)
IFM
CRHEATER** **00
TYPE
UNIT
117A 7.8/10.4 21.7/25.0 41/41 50/50 43/42 212/212 45/45 50/50 47/47 216/216 46/46 50/50 48/48 217/217 50/49 60/60 52/52 221/221
110A 12.0/16. 0 33.4/38.5 49/56 50/60 45/51 212/212 54/60 60/60 49/55 216/216 55/62 60/70 51/56 217/217 60/66 60/70 55/61 221/221
111A 18.6/24. 8 51.7/59.7 72/82 80/90 66/75 212/212 77/87 80/90 70/79 216/216 78/88 80/90 72/81 217/217 83/93 90/100 76/85 221/221
112A 24.0/32. 0 66.7/77.0 91/104 100/110 83/95 212/212 96/108 100/110 88/99 216/216 97/110 100/110 89/101 217/217 102/114 110/125 93/105 221/221
117A 7.8/10.4 21.7/25.0 42/42 50/50 44/44 216/216 46/46 60/50 48/48 220/220 47/47 60/60 50/49 221/221 51/51 60/60 54/54 225/225
110A 12.0/16. 0 33.4/38.5 51/57 60/60 47/52 216/216 56/62 60/70 51/56 220/220 57/63 60/70 52/58 221/221 62/68 70/70 56/62 225/225
111A 18.6/24. 8 51.7/59.7 74/84 80/90 68/76 216/216 79/88 80/90 72/81 220/220 80/90 80/90 73/82 221/221 85/94 90/100 78/86 225/225
112A 24.0/32. 0 66.7/77.0 93/105 100/110 85/96 216/216 97/110 100/110 89/101 220/220 99/111 100/125 90/102 221/221 103/116 110/125 95/106 225/225
117A 7.8/10.4 21.7/25.0 46/45 60/50 48/47 266/266 50/49 60/60 53/52 270/270 51/50 60/60 54/53 271/271 55/55 60/60 58/57 275/275
110A 12.0/16. 0 33.4/38.5 56/61 60/70 51/56 266/266 60/66 60/70 55/60 270/270 62/67 70/70 56/61 271/271 66/72 70/80 61/65 275/275
111A 18.6/24. 8 51.7/59.7 79/87 80/90 72/80 266/266 83/92 90/100 76/84 270/270 85/93 90/100 77/85 271/271 89/98 90/100 82/90 275/275
112A 24.0/32. 0 66.7/77.0 97/109 100/110 89/100 266/266 102/114 110/125 93/104 270/270 103/115 110/125 95/105 271/271 108/120 110/125 99/110 275/275
116B 13.9 16.7 25 25 23 111 27 30 25 113 28 30 25 113 30 30 27 115
113B 16.5 19.8 29 30 26 111 31 35 28 113 32 35 29 113 34 35 31 115
114B 27.8 33.4 46 50 42 111 48 50 44 113 49 50 44 113 51 60 46 115
115B 33.0 39.7 54 60 49 111 56 60 51 113 56 60 52 113 59 60 54 115
128B 41.7 50.2 67 70 61 111 69 70 63 113 70 70 64 113 72 80 66 115
116B 13.9 16.7 26 30 23 114 28 30 25 116 28 30 26 116 31 35 28 118
113B 16.5 19.8 29 30 27 114 32 35 29 116 32 35 29 116 34 35 31 118
114B 27.8 33.4 46 50 42 114 49 50 44 116 49 50 45 116 51 60 47 118
115B 33.0 39.7 54 60 50 114 57 60 52 116 57 60 52 116 59 60 54 118
128B 41.7 50.2 67 70 62 114 70 70 64 116 70 70 64 116 72 80 66 118
116B 13.9 16.7 27 30 25 139 30 30 27 141 30 30 27 141 32 35 29 143
113B 16.5 19.8 31 35 28 139 34 35 30 141 34 35 31 141 36 40 33 143
NONE --- --- 41/41 50/50 43/42 212 45/45 50/50 47/47 216 46/46 50/50 48/48 217 50/49 60/60 52/52 221
STD
N O M . V --- P h --- H Z
NONE --- --- 42/42 50/50 44/44 216 46/46 60/50 48/48 220 47/47 60/60 50/49 221 51/51 60/60 54/54 225
112A+117A 31.8/42.4 88.4/102.0 118/135 125/150 108/124 212/212 123/140 125/150 113/128 216/216 124/141 125/150 114/129 217/217 129/146 150/150 118/134 221/221
NONE --- --- 46/45 60/50 48/47 266 50/49 60/60 53/52 270 51/50 60/60 54/53 271 55/54 60/60 58/57 275
112A+117A 31.8/42.4 88.4/102.0 120/136 125/150 110/125 216/216 125/141 125/150 114/129 220/220 126/142 150/150 115/131 221/221 131/147 150/150 120/135 225/225
MED
208/230--- 3--- 60
HIGH
NONE --- --- 19 25 20 111 21 25 22 113 21 25 22 113 23 25 24 115
112A+117A 31.8/42.4 88.4/102.0 124/140 125/150 114/129 266/266 129/145 150/150 118/133 270/270 130/146 150/150 120/134 271/271 135/151 150/175 124/138 275/275
NONE --- --- 20 25 20 114 21 25 22 116 22 25 23 116 24 25 25 118
STD
MED
4 6 0 --- 3 --- 6 0
5 0 T C * D 0 9 ( 2 --- s t a g e c o o l )
114B 27.8 33.4 48 50 44 139 51 60 46 141 51 60 47 141 53 60 49 143
NONE --- --- 21 25 22 139 23 25 24 141 23 25 24 141 25 30 26 143
HIGH
118A 18.0 17.3 26 30 23 87 30 30 27 91 28 30 25 89 32 35 29 93
119A 36.0 34.6 47 50 43 87 52 60 47 91 49 50 45 89 54 60 49 93
118A 18.0 17.3 26 30 24 91 31 35 28 95 29 30 26 93 33 35 30 97
119A 36.0 34.6 48 50 44 91 53 60 48 95 50 50 46 93 55 60 50 97
118A 18.0 17.3 28 30 25 100 32 35 29 104 30 30 27 102 35 35 31 106
115B 33.0 39.7 56 60 51 139 58 60 53 141 59 60 54 141 61 70 56 143
128B 41.7 50.2 69 70 63 139 72 80 65 141 72 80 66 141 74 80 68 143
NONE --- --- 17 20 17 87 21 25 21 91 18 20 19 89 22 25 23 93
NONE --- --- 17 20 18 91 21 25 22 95 19 25 20 93 23 25 24 97
STD
MED
119A 36.0 34.6 49 50 45 100 54 60 49 104 51 60 47 102 56 60 51 106
NONE --- --- 18 20 19 100 22 25 23 104 20 25 21 102 24 30 25 106
HIGH
5 7 5 --- 3 --- 6 0
See “Legend and Notes for Tables 10 and 11” on page 55.
52
DISC. SIZE
MAX
BRKR
HACR
FUSE or
MCA
DISC. SIZE
MAX
BRKR
HACR
FUSE or
MCA
DISC. SIZE
48HC50TC
Tab l e 11 -- Unit Wire/Fuse or HACR Breaker Sizing Data with Two Speed Indoor Fan Motor (cont)
ELEC. HTR NO C.O. or UNPWR C.O. w/ PWRD C .O.
MAX
BRKR
HACR
FUSE or
MCA
DISC. SIZE
FLA LRA FLA LRA FLA LRA FLA LRA
NO P.E. w/ P.E. (pwrd fr/unit) NO P.E. w/ P.E. (pwrd fr/unit)
MAX
BRKR
HACR
FUSE or
MCA
FLA
Nom
(kW)
IFM
117A 7.8/10.4 21.7/25.0 46/46 60/60 48/47 255/255 50/50 60/60 52/52 259/259 51/51 60/60 53/53 260/260 55/54 60/60 58/57 264/264
110A 12.0/16. 0 33.4/38.5 51/57 60/60 48/52 255/255 56/62 60/70 52/56 259/259 57/63 60/70 53/58 260/260 62/68 70/70 58/62 264/264
112A 24.0/32. 0 66.7/77.0 93/105 100/110 85/96 255/255 97/110 100/110 89/101 259/259 99/111 100/125 90/102 260/260 103/116 110/125 95/106 264/264
NONE --- --- 46/46 60/60 48/47 255 50/50 60/60 52/52 259 51/51 60/60 53/53 260 55/54 60/60 58/57 264
CRHEATER** **00
TYPE
N O M . V --- P h --- H Z
UNIT
STD
112A+117A 31.8/42.4 88.4/102.0 120/136 125/150 110/125 255/255 125/141 125/150 114/129 259/259 126/142 150/150 115/131 260/260 131/147 150/150 120/135 264/264
112A+110A 37.6/50.0 104.2/120.3 140/129 150/150 128/146 255/255 144/134 150/150 132/151 259/259 146/135 150/150 134/152 260/260 150/140 150/150 138/156 264/264
NONE --- --- 50/49 60/60 52/51 305 54/53 60/60 56/55 309 55/54 60/60 58/56 310 58/57 70/70 62/61 314
117A 7.8/10.4 21.7/25.0 50/49 60/60 52/51 305/305 54/53 60/60 56/55 309/309 55/54 60/60 58/56 310/310 58/57 70/70 62/61 314/314
110A 12.0/16. 0 33.4/38.5 56/61 60/70 52/56 305/305 60/66 60/70 56/60 309/309 62/67 70/70 58/61 310/310 66/72 70/80 62/65 314/314
MED
112A 24.0/32. 0 66.7/77.0 97/109 100/110 89/100 305/305 102/114 110/125 93/104 309/309 103/115 110/125 95/105 310/310 108/120 110/125 99/110 314/314
112A+117A 31.8/42.4 88.4/102.0 124/140 125/150 114/129 305/305 129/145 150/150 118/133 309/309 130/146 150/150 120/134 310/310 135/151 150/175 124/138 314/314
NONE --- --- 53/52 60/60 55/54 316 56/55 60/60 60/59 320 57/56 70/60 61/60 321 61/60 70/70 65/64 325
112A+110A 37.6/50.0 104.2/120.3 144/133 150/150 132/150 305/305 149/138 150/150 137/154 309/309 150/139 150/150 138/155 310/310 155/144 175/175 142/160 314/314
208/230--- 3--- 60
117A 7.8/10.4 21.7/25.0 53/52 60/60 55/54 316/316 56/55 60/60 60/59 320/320 57/56 70/60 61/60 321/321 61/60 70/70 65/64 325/325
110A 12.0/16. 0 33.4/38.5 59/64 60/70 55/59 316/316 64/69 70/70 60/63 320/320 65/70 70/70 61/64 321/321 70/75 70/80 65/69 325/325
HIGH
112A 24.0/32. 0 66.7/77.0 101/113 110/125 92/103 316/316 106/117 110/125 97/108 320/320 107/119 110/125 98/109 321/321 112/123 125/125 102/113 325/325
112A+117A 31.8/42.4 88.4/102.0 128/144 150/150 117/132 316/316 133/149 150/150 122/136 320/320 134/150 150/150 123/137 321/321 139/155 150/175 127/142 325/325
NONE --- --- 23 30 23 122 25 30 26 124 25 30 26 124 27 30 28 126
112A+110A 37.6/50.0 104.2/120.3 148/137 150/150 135/153 316/316 152/141 175/175 140/157 320/320 154/143 175/175 141/158 321/321 158/147 175/175 145/163 325/325
118A 18.0 17.3 26 30 24 95 31 35 28 99 29 30 26 97 33 35 30 101
119A 36.0 34.6 49 50 44 95 53 60 48 99 50 50 46 97 55 60 50 101
118A 18.0 17.3 28 30 25 104 32 35 29 108 30 30 27 106 35 35 31 110
119A 36.0 34.6 49 50 45 104 54 60 49 108 51 60 47 106 56 60 51 110
118A 18.0 17.3 30 30 27 118 35 35 31 122 32 35 29 120 37 40 33 124
116B 13.9 16.7 26 30 23 122 28 30 26 124 28 30 26 124 31 35 28 126
113B 16.5 19.8 29 30 27 122 32 35 29 124 32 35 29 124 34 35 31 126
115B 33.0 39.7 54 60 50 122 57 60 52 124 57 60 52 124 59 60 54 126
128B 41.7 50.2 67 70 62 122 70 70 64 124 70 70 64 124 72 80 66 126
129B 50.0 60.1 65 70 73 122 67 70 76 124 68 70 76 124 70 80 78 126
116B 13.9 16.7 27 30 25 147 30 30 27 149 30 30 28 149 32 35 30 151
113B 16.5 19.8 31 35 28 147 34 35 30 149 34 35 31 149 36 40 33 151
115B 33.0 39.7 56 60 51 147 58 60 53 149 59 60 54 149 61 70 56 151
128B 41.7 50.2 69 70 63 147 72 80 65 149 72 80 66 149 74 80 68 151
129B 50.0 60.1 67 80 75 147 69 80 77 149 69 80 77 149 72 80 79 151
116B 13.9 16.7 29 30 27 152 32 35 29 154 32 35 29 154 34 35 32 156
113B 16.5 19.8 33 35 30 152 35 35 32 154 36 40 33 154 38 40 35 156
115B 33.0 39.7 58 60 53 152 60 60 55 154 61 70 56 154 63 70 58 156
128B 41.7 50.2 71 80 65 152 73 80 67 154 74 80 68 154 76 80 70 156
HIGH
129B 50.0 60.1 69 80 76 152 71 80 79 154 71 80 79 154 74 80 81 156
NONE --- --- 18 20 19 95 22 25 23 99 20 25 21 97 24 25 25 101
NONE --- --- 19 25 20 104 23 25 24 108 21 25 22 106 25 30 26 110
118A+119A 54.0 52.0 58 60 64 95 62 70 68 99 59 60 66 97 64 70 70 101
STD
MED
NONE --- --- 24 30 25 147 26 30 27 149 26 30 28 149 28 30 30 151
STD
NONE --- --- 26 30 27 152 28 30 29 154 28 30 29 154 30 35 32 156
MED
4 6 0 --- 3 --- 6 0
50TC*D12 (2--- stage cool)
119A 36.0 34.6 51 60 47 118 56 60 51 122 54 60 49 120 58 60 53 124
NONE --- --- 21 25 22 118 25 30 26 122 23 25 24 120 26 30 28 124
118A+119A 54.0 52.0 58 60 65 104 63 70 69 108 60 70 67 106 65 70 71 110
5 7 5 --- 3 --- 6 0
118A+119A 54.0 52.0 60 70 67 118 65 70 71 122 62 70 69 120 67 70 73 124
HIGH
See “Legend and Notes for Tables 10 and 11” on page 55.
53
48HC50TC
DISC. SIZE
MAX
BRKR
HACR
FUSE or
MCA
DISC. SIZE
MAX
BRKR
HACR
FUSE or
MCA
DISC. SIZE
Tab l e 11 -- Unit Wire/Fuse or HACR Breaker Sizing Data with Two Speed Indoor Fan Motor (cont)
ELEC. HTR NO C.O. or UNPWR C.O. w/ PWRD C .O.
MAX
BRKR
HACR
FUSE or
MCA
DISC. SIZE
FLA LRA FLA LRA FLA LRA FLA LRA
NO P.E. w/ P.E. (pwrd fr/unit) NO P.E. w/ P.E. (pwrd fr/unit)
MAX
BRKR
HACR
FUSE or
MCA
FLA
Nom
(kW)
IFM
117A 7.8/10.4 21.7/25.0 63/62 80/80 65/64 370/370 67/66 80/80 70/69 374/374 68/67 80/80 71/70 375/375 71/71 80/80 75/74 379/379
110A 12.0/16. 0 33.4/38.5 63/62 80/80 65/64 370/370 67/66 80/80 70/69 374/374 68/67 80/80 71/70 375/375 71/71 80/80 75/74 379/379
112A 24.0/32. 0 66.7/77.0 95/106 100/110 87/98 370/370 99/111 100/125 91/102 374/374 101/112 110/125 92/103 375/375 105/117 110/125 96/107 379/379
NONE --- --- 63/62 80/80 65/64 370 67/66 80/80 70/69 374 68/67 80/80 71/70 375 71/71 80/80 75/74 379
CRHEATER** **00
TYPE
N O M . V --- P h --- H Z
UNIT
STD
112A+117A 31.8/42.4 88.4/102.0 122/138 125/150 112/126 370/370 126/142 150/150 116/131 374/374 128/144 150/150 117/132 375/375 132/148 150/150 121/136 379/379
112A+110A 37.6/50.0 104.2/120.3 141/131 150/150 130/147 370/370 146/135 150/150 134/152 374/374 147/137 150/150 135/153 375/375 152/141 175/150 140/157 379/379
NONE --- --- 65/64 80/80 68/67 394 69/68 80/80 72/71 398 70/69 80/80 73/72 399 74/73 80/80 78/77 403
117A 7.8/10.4 21.7/25.0 65/64 80/80 68/67 394/394 69/68 80/80 72/71 398/398 70/69 80/80 73/72 399/399 74/73 80/80 78/77 403/403
110A 12.0/16. 0 33.4/38.5 65/64 80/80 68/67 394/394 69/68 80/80 72/71 398/398 70/69 80/80 73/72 399/399 74/73 80/80 78/77 403/403
MED
112A 24.0/32. 0 66.7/77.0 97/109 100/110 89/100 394/394 102/114 110/125 93/104 398/398 103/115 110/125 95/105 399/399 108/120 110/125 99/110 403/403
112A+117A 31.8/42.4 88.4/102.0 124/140 125/150 114/129 394/394 129/145 150/150 118/133 398/398 130/146 150/150 120/134 399/399 135/151 150/175 124/138 403/403
NONE --- --- 68/67 80/80 71/70 405 72/71 80/80 75/74 409 73/72 80/80 77/76 410 76/76 90/90 81/80 414
112A+110A 37.6/50.0 104.2/120.3 144/133 150/150 132/150 394/394 149/138 150/150 137/154 398/398 150/139 150/150 138/155 399/399 155/144 175/175 142/160 403/403
208/230--- 3--- 60
117A 7.8/10.4 21.7/25.0 68/67 80/80 71/70 405/405 72/71 80/80 75/74 409/409 73/72 80/80 77/76 410/410 76/76 90/90 81/80 414/414
110A 12.0/16. 0 33.4/38.5 68/67 80/80 71/70 405/405 72/71 80/80 75/74 409/409 73/72 80/80 77/76 410/410 76/76 90/90 81/80 414/414
HIGH
112A 24.0/32. 0 66.7/77.0 101/113 110/125 92/103 405/405 106/117 110/125 97/108 409/409 107/119 110/125 98/109 410/410 112/123 125/125 102/113 414/414
112A+117A 31.8/42.4 88.4/102.0 128/144 150/150 117/132 405/405 133/149 150/150 122/136 409/409 134/150 150/150 123/137 410/410 139/155 150/175 127/142 414/414
NONE --- --- 29 35 30 184 31 40 32 186 31 40 32 186 33 40 34 188
112A+110A 37.6/50.0 104.2/120.3 148/137 150/150 135/153 405/405 152/141 175/175 140/157 409/409 154/143 175/175 141/158 410/410 158/147 175/175 145/163 414/414
118A 18.0 17.3 28 30 25 147 32 35 29 151 30 30 27 149 35 35 31 153
119A 36.0 34.6 49 50 45 147 54 60 49 151 51 60 47 149 56 60 51 153
118A 18.0 17.3 28 30 25 147 32 35 29 151 30 30 27 149 35 35 31 153
119A 36.0 34.6 49 50 45 147 54 60 49 151 51 60 47 149 56 60 51 153
118A 18.0 17.3 30 30 27 161 35 35 31 165 32 35 29 163 37 40 33 167
116B 13.9 16.7 29 35 30 184 31 40 32 186 31 40 32 186 33 40 34 188
113B 16.5 19.8 30 35 30 184 32 40 32 186 33 40 32 186 35 40 34 188
115B 33.0 39.7 55 60 50 184 57 60 52 186 58 60 53 186 60 60 55 188
128B 41.7 50.2 68 70 62 184 70 70 64 186 71 80 65 186 73 80 67 188
019B 50.0 60.1 65 70 73 184 68 80 76 186 68 80 76 186 70 80 78 188
116B 13.9 16.7 30 40 31 196 32 40 33 198 32 40 33 198 34 40 35 200
113B 16.5 19.8 31 40 31 196 34 40 33 198 34 40 33 198 36 40 35 200
115B 33.0 39.7 56 60 51 196 58 60 53 198 59 60 54 198 61 70 56 200
128B 41.7 50.2 69 70 63 196 72 80 65 198 72 80 66 198 74 80 68 200
129B 50.0 60.1 67 80 75 196 69 80 77 198 69 80 77 198 72 80 79 200
116B 13.9 16.7 31 40 33 201 33 40 35 203 34 40 35 203 35 45 37 205
113B 16.5 19.8 33 40 33 201 35 40 35 203 36 40 35 203 38 45 37 205
115B 33.0 39.7 58 60 53 201 60 60 55 203 61 70 56 203 63 70 58 205
128B 41.7 50.2 71 80 65 201 73 80 67 203 74 80 68 203 76 80 70 205
HIGH
129B 50.0 60.1 69 80 76 201 71 80 79 203 71 80 79 203 74 80 81 205
NONE --- --- 24 30 24 147 27 30 29 151 25 30 26 149 29 35 31 153
NONE --- --- 24 30 24 147 27 30 29 151 25 30 26 149 29 35 31 153
118A+119A 54.0 52.0 58 60 65 147 63 70 69 151 60 70 67 149 65 70 71 153
STD
MED
NONE --- --- 30 40 31 196 32 40 33 198 32 40 33 198 34 40 35 200
STD
NONE --- --- 31 40 33 201 33 40 35 203 34 40 35 203 35 45 37 205
MED
4 6 0 --- 3 --- 6 0
5 0 T C * D 1 4 ( 2 --- s t a g e c o o l )
119A 36.0 34.6 51 60 47 161 56 60 51 165 54 60 49 163 58 60 53 167
NONE --- --- 25 30 26 161 29 35 31 165 27 30 28 163 31 35 33 167
118A+119A 54.0 52.0 58 60 65 147 63 70 69 151 60 70 67 149 65 70 71 153
5 7 5 --- 3 --- 6 0
118A+119A 54.0 52.0 60 70 67 161 65 70 71 165 62 70 69 163 67 70 73 167
HIGH
See “Legend and Notes for Tables 10 and 11” on page 55.
54
Legend an d Notes for Tables 10 and 11
LEGEND:
BRKR --- Circuit breaker C.O. --- Convenience outlet DISC. --- Disconnect FLA --- Full load amps LRA --- Locked rotor amps MCA --- Minimum circuit amps P.E . --- P o w e r e x h a u s t Pwrd fr/ unit --- Powered from unit PWRD C.O. --- Powered convenience outlet UNPWR C.O. --- Unpowered convenience outlet
NOTES:
1. In complianc e with NEC requirements for multim otor and combin ati on load equipment (refer to NEC Articles 430 and 440), the overcurrent protective device for the unit shall be fuse or HACR breaker. Cana dian units may be fuse or circuit breaker.
2. For 208/230 v units, where one value is shown it is the same for either 208 or 230 volts.
3. Unbalanced 3-Phase Supply Voltage Never operate a motor where a phase imbalance in supply voltage is greater than 2%. Use the following formula to determine the percentage of voltage imbalance.
% Voltage Imbalance = 100 x
max voltage deviation from average voltage
average voltage
Example: Supply voltage is 230-3-60
AB = 224 v BC = 231 v AC = 226 v
Average Voltage =
Determine maximum deviation from average voltage. (AB) 227 – 224 = 3 v (BC) 231 – 227 = 4 v (AC) 227 – 226 = 1 v Maximum deviation is 4 v. Determine percent of voltage imbalance.
% Voltage Imbalance = 100 x
This amount of phase imbalance is satisfactory as it is below the maximum allowable 2%.
IMPORTANT: If the supply voltage phase imbalance is more than 2%, cont act your local electric utility company immediately.
(224 + 231 + 226)
3
= 227
4
227
= 1.76%
681
=
3
50TC
55
50TC
Economizer 2 Position Damper
Fig. 76 -- EconoMi$erRIV Wiring
Step 11 — Adjust Factory--Installed Options
Smoke Detectors —
Smoke detector(s) will be connected at the Central Terminal Board (CTB), at terminals marked “Smoke Shutdown”. Remove jumper JMP 3 when ready to energize unit.
EconoMi$er IV Occupancy Switch —
Refer to Fig. 76 for general EconoMi$er IV wiring. External occupancy control is managed through a connection on the Central Terminal Board.
If external occupancy control is desired, connect a time clock or remotely controlled switch (closed for Occupied, open for Unoccupied sequence) at terminals marked OCCUPANCY on CTB. Remove or cut jum per JMP 2 to complete the installation.
Step 12 — Install Accessories
Available accessories include:
Roof Curb Thru--base connection kit (must be installed before unit
is set on curb) Manual outside air damper Two--Position motorized outside air damper
Unit Without Economizer or 2 Position Damper
C08631
EconoMi$er IV (with control and integrated barometric relief)
EconoMi$er2 (without control/for external signal and integrated barometric relief)
Power Exha ust Differential dry--bulb sensor (EconoMi$er IV) Outdoor enthalpy sensor Differential enthalpy sensor Electric Heaters Single Point kits Low Ambient Controls Thermostat / Sensors CO
sensor
2
DDC interface (PremierLinkt cont roller) Louvered hail guard Phase monitor control Winter Start kit
Refer to separate installation instructions for information on installing these accessories.
56
Step 13 — Check Belt Tension
Measure the belt span length as shown in Fig. 77. Calculate the required deflection by multiplying the belt span length by 32 inches: 32 x
Belt Force -- Deflection Method --
Check the belt tension with a spring--force belt force deflection gauge.
1. Place a straightedge along the belt between the two pulleys. Measure the distance between the motor shaft and the blower shaft.
1
/64. For exam ple, if the belt span length is
1
/64=1/2inch deflection.
2. Set the tension gauge to the desired tension (see T able 1 in Fig. 77). Place the large O--ring at that point.
3. Press the tension checker downward on the belt until the large O--ring is at the bottom of the straightedge.
4. Adjust the belt tension as needed.
Adjust belt tension by loosing the motor mounting plate front bolts and rear bolt (see Fig. 78) and sliding the plate towards the fan (to reduce tension) or away from the fan (to increase tension). Ensure the blower shaft and motor shaft are parallel to each other (pulleys aligned). Tighten all bolts securely when finished.
50TC
Fig. 77 -- V--Belt Force Label
57
C160146
MOUNTING
BOLTS (4)
50TC
Fig. 78 -- Belt Drive Motor Mounting
Pre--Start and Start--Up
This completes the mechanical installation of the unit. Refer to the unit’s Service Manual for detailed Pre--Start and Start--up instructions.
BLOWER PULLEY
V-BELT
MOTOR PULLEY
MOTOR
MOTOR MOUNTING
PLATE
C11504
ECarrier Corporation 2017 Edition Date: 07/17
Manufacturer reserves the r ight to change, at any time, specifications and designs without notice and without obligations.
rinted in U.S.A.
P
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C a t a l o g N o : 5 0 T C --- 8 --- 1 4 --- 0 2 S I
R e p l a c e s : 5 0 T C --- 8 --- 1 4 --- 0 1 S I
UNIT START-UP CHECKLIST
(Remove and Store in 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 judgement follow safe practices, and adhere to the safety considerations/information outlined in the preceding sections of this Installation Instructions
MODEL NO.: SERIAL NO.:
I. PRE-START-UP
j VERIFY THAT ALL PACKAGING MATERIALS HA VE BEEN REMOVED FROM UNIT
j VERIFY INSTALLATION OF OUTDOOR AIR HOOD
j VERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTRUCTIONS
j VERIFY THAT ALL ELECTRICAL CONNECTIONS AND TERMINALS ARE TIGHT
j CHECK THAT INDOOR--AIR FILTERS ARE CLEAN AND IN PLACE
j CHECK THAT OUTDOOR AIR INLET SCREENS ARE IN PLACE
j VERIFY THAT UNIT IS LEVEL
j CHECK FAN WHEELS AND PROPELLER FOR LOCATION IN HOUSING/ORIFICE AND VERIFY
SETSCREW IS TIGHT
j VERIFY THAT FAN SHEAVES ARE ALIGNED AND BELTS ARE PROPERLY TENSIONED
j VERIFY THAT SCROLL COMPRESSORS ARE ROTATING IN THE CORRRECT DIRECTION
j VERIFY INSTALLATION OF THERMOSTAT
II. START-UP
ELECTRICAL
SUPPLY VOLTAGE L1--L2 L2--L3 L3--L1
document.
as
,
50TC
COMPRESSOR AMPS 1 L1 L2 L3
COMPRESSOR AMPS 2 L1 L2 L3
SUPPLY FAN AMPS L1 L2 L3
TEMPERATURES
OUTDOOR--AIR TEMPERATURE _F DB (DRY BULB)
RETURN--AIR TEMPERATURE _FDB _FWB(WETBULB)
COOLING SUPPLY AIR TEMPERA TURE _F
PRESSURES
REFRIGERANT SUCTION CIRCUIT A PSIG
CIRCUIT B PSIG
REFRIGERANT DISCHARGE CIRCUIT A PSIG
CIRCUIT B PSIG
j VERIFY REFRIGERANT CHARGE USING CHARGING CHARTS
GENERAL
j ECONOMIZER MINIMUM VENT AND CHANGEOVER SETTINGS TO JOB REQUIREMENTS (IF EQUIPPED )
j VERIF Y SMOKE DETECTOR UNIT SHUTDOWN BY UTILIZING MAGNET TEST
59
III. HUMIDI--MIZERRSYSTEM START-UP
STEPS
50TC
j 1. CHECK CTB FOR JUMPER 5, 6, 7
j 2. OPEN HUMIDISTAT CONTACTS
j 3. START UNIT IN COOLING (CLOSE Y1)
OBSERVE AND RECORD
j 4. CHECK UNIT CHARGE PER CHARGING CHART
j 5. SWITCH UNIT TO HIGH--LATENT MODE (SUBCOOLER) BY CLOSING HUMIDISTAT WITH Y1 CLOSED
OBSERVE
j A. REDUCTION IN SUCTION PRESSURE (5 TO 7 PSI EXPECTED)
j B. DISCHARGE PRESSURE UNCHANGED
j C. LIQUID TEMPERATURE DROPS TO 50 TO 55_F RANGE
j D. LSV SOLENOID ENGERIZED (VALVE CLOSES)
j 6. SWITCH UNIT TO DEHUMID (REHEAT) BY OPENING Y1
OBSERVE
j A. SUCTION PRESSURE INCREASES TO NORMAL COOLING LEVEL
j B. DISCHARGE PRESSURE DECREASES (35 TO 50 PSI)
j C. LIQUID TEMPERATURE RETURNS TO NORMAL COOLNG LEVEL
j D. LSV SOLENOID ENERGIZED (VALVE CLOSES)
j E. DSV SOLENOID ENERGIZED, VAL VE OPENS
j 7. WITH UNIT IN DEHUMID MODE CLOSE W1
JUMPER 5, 6, 7 MUST BE CUT AND OPEN
A. SUCTION PRESSURE PSIG
B. DISCHARGE PRESSURE PSIG
C. ENTERING AIR TEMPERATURE _F
D. LIQUID LINE TEMPERATURE
AT OUTLET OR REHEAT COIL _F
E. CONFRIM CORRECT ROTATION FOR COMPRESSOR
F . CHECK FOR CORRECT RAMP--UP OF OJUTDOOR FAN MOTOR AS CONDENSER COIL WARMS
COMPRESSOR AND OUTDOOR FAN STOP; LSV AND DSV SOLENOIDS DE--ENERGIZED
j 8. OPEN W1 RESTORE UNIT TO DEHUMID MODE
j 9. OPEN HUMIDISTAT INPUT
COMPRESSOR AND OUTDOOR FAN STOP; LSV AND DSV SOLENOIDS DE--ENERGIZED
j 10. RESTORE SETPOINTS FOR THERMOSTAT AND HUMIDISTAT
REPEAT PROCESS FOR 2 COMPRESSOR SYSTEMS
ECarrier Corporation 2017 Edition Date: 07/17
Manufacturer reserves the r ight to change, at any time, specifications and designs without notice and without obligations.
rinted in U.S.A.
P
60
C a t a l o g N o : 5 0 T C --- 8 --- 1 4 --- 0 2 S I
R e p l a c e s : 5 0 T C --- 8 --- 1 4 --- 0 1 S I
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