Mitsubishi Electric PAC-US444CN-1 User Manual

© 2015 Mitsubishi Electric US, Inc.
1
•Onlyadealerorqualiedtechnician
shouldinstall,relocate,reinstall,or
repairthedevice.
Improper installation or repair may
result in electrical shock or re.
•Properlyinstallthedeviceona
stable,load-bearingsurface.
Device installed on an unstable
surface may fall and cause injury.
Contents
1. Supplied Parts.......................................................................................................1
2. Safety Precautions.................................................................................................1
3. System Conguration............................................................................................3
4. How to Install.........................................................................................................5
5. Usage....................................................................................................................8
1. ConrmingtheSuppliedParts
Check that the box includes the following part(s) in addition to this
installation manual:
PAC-US444CN-1 Thermostat Interface (1)
2. SafetyPrecautions
• Thoroughly read the following safety precautions before use.
• Hazards that can occur from incorrect handling are classied by the symbols below:
Warning
Incorrect handling can result in death, serious injury, etc.
Caution
Incorrect handling can result in bodily injury and/or
structure damage.
• After reading this manual, keep this manual for future reference. When the device
is reinstalled or repaired, give this manual to those who provide these services.
When the user changes, make sure that the new user receives this manual.
Warning
MANUFACTURED FOR:
MITSUBISHI ELECTRIC US, INC.
PAC-US444CN-1
INSTALLATION/INSTRUCTION MANUAL
Before using the device, carefully read this installation/instruction manual to ensure
proper operation.
Keep this manual for future reference and give it to the technician when the device
is reinstalled or repaired.
FORINSTALLER
Thermostat Interface
sandium.com

Mitsubishi Electric PAC-US444CN-1 Specifications

General

Brand	Mitsubishi Electric
Model	PAC-US444CN-1
Category	Recording Equipment
Language	English

Summary

Confirming the Supplied Parts

Safety Precautions

System Configuration

How to Install

Device Configuration

Initial settings are configured via dip switches on the circuit board for the device.

DIP Switch Settings

Delayed Off

Configures the unit's run time after reaching the thermostat set point to improve efficiency.

Indoor Unit Fan Speed Adjustment

Sets the indoor unit fan speed via SW1-3 and SW1-4, allowing for Auto, Medium, High, or Custom Auto.

Two-Stage Thermostat Operation

Adjusts indoor unit operation during stage 1 heating and cooling based on connected Y2/W2 signals.

Static Pressure Settings

CN24 Operation During Defrost

Adjusts Mode 23 function settings for CN24 operation during defrost cycles.

Fan Speed During Heating Mode, Thermal Off

Sets Mode 25 initial setting for fan speed during thermal off for heating.

Usage

Adapter Function Settings

Defines how the adapter impacts indoor unit functions like auto recovery and temperature detection.

Grouping

States that connecting multiple PAC-US444CN-1 units to one thermostat dry-contact set is not supported.

Temperature Sensing

Explains the use of thermostat and indoor unit thermistors for room temperature monitoring.