Carrier 50FS104 Volume Rooftop Unit Manuals

Manuals and User Guides for Carrier 50FS104 Volume Rooftop Unit. We have 1 Carrier 50FS104 Volume Rooftop Unit manual available for free PDF download: Operating And Troubleshooting Manual

Carrier 50FS104 Operating And Troubleshooting Manual

Carrier 50FS104 Operating And Troubleshooting Manual (64 pages)

Variable-Air Volume Rooftop Units

Brand: Carrier | Category: Air Conditioner | Size: 2 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
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
- Gas Section
  8
- Differential Enthalpy
  10
Economizer
10
- Enthalpy Control
  10
High Capacity Modulating Power Exhaust Variable Frequency Drive
12
Supply Fan Variable Frequency Drive (VFD)
12
Configuration
13
Control Wiring
13
- Night Setback Thermostat
  13
- Space Temperature Reset Accessory (50Dj900021)
  13
Controls Installation
13
Space Temperature Reset
13
- Installation
  18
Temperature Reset
13
Demand Limit
18
Configuration
19
Control from Remote Building Management
19
- Installation
  19
- Night Setback Control
  19
- Occupied/Unoccupied
  19
- Operating Sequence
  19
- Single-Step Demand Limit
  19
- System (BMS)
  19
- Unit Supply Air Set Point Adjustment
  19
  - Configuration
    20
  - Installation
    20
  - Single-Step Demand Limit
    20
  - Operating Sequence
    21
Two-Step Demand Limit
19
Smoke Control Modes
21
- Configuration
  22
- Fire Shutdown Mode
  22
- Installation
  22
- Operating Sequence
  22
- Pressurization Mode
  22
- Smoke Purge Mode
  22
- Configuration
  23
Air Pressure Tubing
23
- Inlet Guide Vanes
  23
- Supply Fan Variable Frequency Drive
  23
  - Configuration
    25
  - Installation
    25
- Modulating Power Exhaust
  25
Initial Check
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
Operating Information
34
- Operating Sequence
  34
- Single-Step Demand Limit
  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
- Troubleshooting
  44
- Diagnostic Codes
  45
- Restart Procedure
  45
- Configuration
  46
- Thermistor Troubleshooting
  48
- Two-Step Demand Limit
  51
- Configuration
  52
- Economizer Motor
  52
- Supply Fan Variable Frequency Drive
  52
- Unit Wiring
  57
- Installation
  62
- Operating Sequence
  62
- Service Training
  62
- Installation
  63
- Start-Up Checklist
  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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