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48FK074
Carrier 48FK074 Manuals
Manuals and User Guides for Carrier 48FK074. We have
2
Carrier 48FK074 manuals available for free PDF download: Operating And Troubleshooting Manual, Controls Operation And Troubleshooting
Carrier 48FK074 Operating And Troubleshooting Manual (64 pages)
Variable-Air Volume Rooftop Units
Brand:
Carrier
| Category:
Air Conditioner
| Size: 2.12 MB
Table of Contents
Table of Contents
1
Circuit 2
1
General
2
Rooftop Information
2
Safety Considerations
2
VAV Control System
2
Processor Board
3
P3 - Reset Limit
5
P4 - Demand Limit
5
P6 - Warm-Up Set Point
5
P7 - Sasp Reset Temperature
5
Configuration Header and Dip Switch
5
Display Board
5
Relay Board
5
Thermistors
5
T1 - Supply-Air Temperature Thermistor
5
T2 - Return-Air Temperature Thermistor
5
Accessory Board
7
P3 - Reset Limit
7
Compressor Operation
7
Demand Limit Control Module (DLCM)
7
Single-Step Demand Unit
7
Economizer
10
Enthalpy Control
10
Differential Enthalpy
10
High Capacity Modulating Power Exhaust Variable Frequency Drive
12
Supply Fan Variable Frequency Drive (VFD)
12
Configuration
13
Installation
18
Control Wiring
13
Night Setback Thermostat
13
Space Temperature Reset Accessory (50Dj900021)
13
Controls Installation
13
Space Temperature Reset
13
Temperature Reset
13
Demand Limit
18
Single-Step Demand Limit
19
Operating Sequence
19
Control from Remote Building Management
19
Installation
19
Night Setback Control
19
Occupied/Unoccupied
19
Supply Duct Pressure Set Point Adjustment
19
System (BMS)
19
Two-Step Demand Limit
19
Unit Supply Air Set Point Adjustment
19
Configuration
20
Installation
20
Single-Step Demand Limit
20
Operating Sequence
21
Configuration
22
Fire Shutdown Mode
22
Installation
22
Operating Sequence
22
Pressurization Mode
22
Smoke Purge Mode
22
Smoke Control Modes
21
Air Pressure Tubing
23
Inlet Guide Vanes
23
Supply Fan Variable Frequency Drive
23
Configuration
23
Modulating Power Exhaust
25
Configuration
25
Initial Check
25
Installation
25
Start-Up
25
Configuration Header
26
DIP Switches
26
Single-Step Demand Limit
26
Two-Step Demand Limit
26
Adjusting Set Points
27
Potentiometers
27
Single-Step Demand Limit
27
Supply Fan Control with IGV Option
28
Supply Fan Control with VFD Option
28
Installation
29
High Capacity Power Exhaust (48FM and 50FM,FS Units)
30
Modulating Power Exhaust Option or Accessory) (48FK,JK and 50FK,JK Units)
30
Configuration
31
Quick Test Program
31
Start Unit
31
Digital Display
34
Codes 20 through 30 and 88, Operational Status
34
Codes 51 through 87, Diagnostic Information
34
Single-Step Demand Limit
34
Operating Sequence
34
Operating Information
34
Operating Sequence
35
Head Pressure Control
36
High Capacity Modulating Power Exhaust (48FM and 50FM,FS Units)
38
Modulating Power Exhaust (48FK,JK and 50FK,JK Units Option or Accessory)
38
Supply Fan Control with IGV
38
Supply Fan Control with VFD
38
Unit Staging
38
Configuration
46
Two-Step Demand Limit
51
Configuration
52
Installation
62
Operating Sequence
62
Installation
63
Two-Step Demand Limit
63
Installation
64
Manufacturer Reserves the Right to Discontinue, or Change at any Time, Specifications or Designs Without Notice and Without Incurring Obligations
64
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Carrier 48FK074 Controls Operation And Troubleshooting (60 pages)
Variable-Air Volume Rooftop Units
Brand:
Carrier
| Category:
Air Conditioner
| Size: 1.91 MB
Table of Contents
Table of Contents
1
Circuit 2
1
General
2
Processor Board
2
P3 - Reset Limit
5
P4 - Demand Limit
5
Assembly
5
Rooftop Information
2
Safety Considerations
2
VAV Control System
2
Display Board
5
Relay Board
5
Thermistors
5
T1 - Supply-Air Temperature Thermistor
5
T2 - Return-Air Temperature Thermistor
5
T3 - Saturated Condensing Temperature
5
Accessory Board
7
P3 - Reset Limit
7
Compressor Operation
7
Demand Limit Control Module (DLCM)
7
Single-Step Demand Unit
7
Economizer
10
Enthalpy Control
10
Differential Enthalpy
10
Temperature Reset
12
Controls Installation
13
Variable Frequency Drive (VFD)
12
Control Wiring
13
Night Setback Thermostat
13
Space Temperature Reset Accessory
13
Space Temperature Reset
13
INSTALLATION CONFIGURATION OPERATING SEQUENCE Demand Limit
18
Operating Sequence
19
Control from Remote Building Management
19
System (BMS)
19
Occupied/Unoccupied
19
Supply Duct Pressure Set Point Adjustment
19
External Alarm Signal
19
Smoke Control Modes
21
Pressurization Mode
22
Smoke Purge Mode
22
Operating Sequence
22
Air Pressure Tubing
23
Initial Check
25
Start-Up
25
Configuration Header
26
DIP Switches
26
Adjusting Set Points
27
Potentiometers
27
Supply Fan Control with IGV Option
28
Supply Fan Control with VFD Option
28
Modulating Power Exhaust (Option or Accessory)
30
Quick Test Program
31
Start Unit
31
Digital Display
34
Codes 20 through 30 and 88, Operational Status
34
Operating Information
34
Operating Sequence
35
Head Pressure Control
36
Modulating Power Exhaust (Option or Accessory Except FY,JY Units)
38
Supply Fan Control with IGV
38
Supply Fan Control with VFD
38
Unit Staging
38
Checking Display Codes
44
Complete Unit Stoppage
44
Restart Procedure
44
Single Circuit Stoppage
44
Troubleshooting
44
Diagnostic Codes
45
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