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50EW024-048
Carrier 50EW024-048 Manuals
Manuals and User Guides for Carrier 50EW024-048. We have
1
Carrier 50EW024-048 manual available for free PDF download: Installation, Start-Up And Service Instructions Manual
Carrier 50EW024-048 Installation, Start-Up And Service Instructions Manual (57 pages)
Single-Package Rooftop Units Electric Cooling with Electric Heat Option
Brand:
Carrier
| Category:
Air Conditioner
| Size: 1.7 MB
Table of Contents
Table of Contents
1
Installation
1
Provide Unit Support
1
Safety Considerations
1
Roof Curb
2
Base Unit Dimensions
4
Positioning
8
Rigging Label
8
Step 2 - Rig and Place Unit
8
Physical Data
9
Evaporator Fan Motor Data
11
Roof Mount
11
Installation
11
Step 3 - Field Fabricate Ductwork
11
Step 4 - Make Unit Duct Connections
11
Step 5 - Trap Condensate Drain
11
Constant Volume Applications
12
Features with Sensor Control of Unit
12
Features with Thermostat Control of Unit
12
Step 6 — Controls Options
12
Features with Stand-Alone Applications
13
Field Control Remote Start/Stop
13
Variable Air Volume (Vav) Applications
13
Control Board Diagram
14
Field Power Supply
15
Field Power Wiring Connections
15
Power Wiring
15
Step 7 - Make Electrical Connections
15
Field Control Wiring
16
Routing through Bottom/Side of Unit
16
Thermostat/Sensor Wiring
16
VAV Units
16
Electrical Data
17
Control Box Diagram
24
CCN Connection Approved Shielded Cables
25
Color Code Recommendations
25
Field Control Thermostat Wiring
25
Make Outdoor-Air Inlet Adjustments
25
Step 8 - Make Outdoor-Air Inlet
25
Adding Seal Strip to Mounting Flange of Hood Sides
26
Adding Seal Strip to Top of Hood Sides
26
Economizer Hood Assembly
26
Adding Foam Strip to Blockoff Baffle
27
Adding Foam Strip to Cross Member
27
Adding Foam Strip to Hood Side
27
Adding Seal Strip to Hood Top Mounting Flange
27
Accessory Differential Enthalpy Control
28
Accessory Enthalpy Control
28
Economizer Settings
28
Minimum Damper Position Setting
28
Barometric Relief Damper and Power Exhaust Mounting Details
29
Step 9 — Position Power Exhaust Barometric Relief Damper Hood
29
VAV Building Pressing Transducer
29
VAV Duct Pressure Transducer
29
Motormaster III Sensor Location
30
Pressure Transducer Locations
30
Step 10 — Install Accessories
30
Adjustments
32
Start-Up
32
VFD Factory-Installed Jumpers
32
VFD Set Point
32
Direct Digital Controls DIP Switch Configuration
33
Potentiometer Signal Levelss
33
Power Exhaust
33
Power Exhaust Default Set Points
33
DIP Switch Configuration
34
DIP Switch Factory Settings
34
Cooling, Constant Volume Units
35
Sequence of Operation
35
Fan Performance, Vertical Discharge Units
36
Air Quantity Limits
38
Motor Limitations
39
User Defined Set Points
39
Cooling, Variable Volume Units
40
Heating, Constant Volume Units
40
Heating, Variable Air Volume Units
40
Heat Interlock Relay Wiring
41
Morning Warm-Up
41
Power Exhaust Operation
41
Space Temperature Reset
41
Capacity Control, Cooling
42
Field Test
42
Service
42
Time Guard Circuit
42
Cleaning
43
Evaporator Fan Performance Adjustment
43
Evaporator Fan Service and Replacement
43
Lubrication
43
Belt Tension Adjustment
44
Condenser-Fan Adjustment
44
Evaporator-Fan Motor Replacement
44
Refrigerant Charge
44
Compressor Lockout Logic
45
Control Circuits
45
Evaporator-Fan Motor Protection
45
Freeze Protection Thermostat
45
Service
45
Troubleshooting
46
Typical Refrigerant Circuiting
46
Control Board LED Alarms
49
Diagnostic Leds
49
I/O Channel Designations Base Module
50
I/O Channel Designations Expansion Module
51
Start-Up Checklist
55
Start-Up Checklist
56
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