Carrier WeatherExpert 48LC Series - Integrated Staging Control (ISC) Board

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Fig. 54 — Typical Humidi-MiZer Adaptive Dehumidification System Humidistat Wiring

Integrated Staging Control (ISC) Board

Fig. 55 — Integrated Staging Control (ISC) Board

Humidistat

DDC

Control

Indoor Fan

“On” Status

IGC

Board

Power

Plug

Phase

Monitor

Relay

Auxilary

Shutdown

Condensate

Overflow

Economizer

Occupancy

Status Code LEDs

Thermostat

DDC

Control

Remote

Shutdown

Smoke

Shutdown

Smoke

Alarm

Low Ambient

Outdoor Fan

Control

Compressors

Reheat

Low-Pressure

Switch

High-Pressure

Switch

Indoor Fan

Motor

Outdoor Fan

Motors

Phase

Monitor

Relay

Main Page

Safety Considerations1
- Table of Contents1
General2
Rated Indoor Airflow (Cfm)2
Installation19
Step 1 - Plan for Unit Location19
- Roof Mount19
Step 2 - Plan for Sequence of Unit Installation19
- Curb-Mounted Installation19
- Pad-Mounted Installation19
- Frame-Mounted Installation19
Step 3 - Inspect Unit19
Step 4 - Provide Unit Support19
- Roof Curb Mount19
- Slab Mount (Horizontal Units Only)23
- Alternate Unit Support (in Lieu of Curb or Slab Mount)23
Step 5 - Field Fabricate Ductwork23
Step 6 - Rig and Place Unit23
- Positioning on Curb24
Step 7 - Horizontal Duct Connection24
Step 8 - Install Outside Air Hood - Factory24
Step 9 - Install Flue Hood and Combustion Air26
- Hood26
Step 10 - Install Gas Piping26
- Gas Supply Line27
- Factory-Option Thru-Base Connections27
Step 11 - Install External Condensate Trap and Line28
Step 12 - Make Electrical Connections29
- Field Power Supply29
- Units Without Factory-Installed Non-Fused Disconnect or Hacr35
- Units with Factory-Installed Non-Fused Disconnect or Hacr35
- All Units36
- Convenience Outlets36
- Hacr37
- Factory-Option Thru-Base Connections38
- Units Without Thru-Base Connections38
- Field Control Wiring38
- Thermostat38
- Unit Without Thru-Base Connection Kit38
- Heat Anticipator Settings39
- Transformer Connection for 208-V Power Supply39
RTU Open Controller (Factory-Installed Option)39
Systemvu™ Controller (Factory-Installed Option)39
Humidi-Mizer System Control Connections39
- Humidi-Mizer System - Space Rh Controller39
Integrated Staging Control (ISC) Board40
- Isc Board - Sequence of Operation41
Economi$Er X (Factory Option)43
- System Components43
- Specifications43
- Inputs43
- Outputs43
- Environmental43
- Economizer Module Wiring Details44
- Interface Overview45
- Setup and Configuration46
- Enthalpy Settings55
- Two-Speed Fan Operation55
- Checkout56
- Troubleshooting56
Staged Air Volume (SAV™) with Variable Frequency57
- Drive57
- Multi-Speed Vfd Display Kit (Field-Installed Option)58
- Connecting the Keypad to the Vfd59
- Program the Vfd for Indoor Fan Control60
Smoke Detectors71
- Return Air Sensor Tube Installation71
- Smoke Detector Test Magnet71
- Additional Application Data71
Step 13 - Install Accessories71
Step 14 - Check Belt Tension72
- Belt Force - Deflection Method72
- Belt Tension Method72

Carrier WeatherExpert 48LC Series - Integrated Staging Control (ISC) Board

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