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50FY044
Carrier 50FY044 Manuals
Manuals and User Guides for Carrier 50FY044. We have
1
Carrier 50FY044 manual available for free PDF download: Controls Operation And Troubleshooting
Carrier 50FY044 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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