Carrier 48TC*D08 T55/56 Override Duration, IAQ Low Reference @ 4mA, IAQ High Reference @ 20mA

48TC

T55/56 Override Duration

This sets the occupancy override duration when the override button is pushed on the space sensor.

Factory Default = 1 hr Range = 0-24 hr

IAQ Low Reference @ 4mA

This is used when an IAQ sensor is installed on Input 1 or

2.This value is displayed and used when 4mA is seen at the input.

Factory Default = 0 PPM

Range = 0-400 PPM

IAQ High Reference @ 20mA

This is used when an IAQ sensor is installed on Input 1 or

2.This value is displayed and used when 20mA is seen at the input.

Factory Default = 2000 PPM Range = 0-5000 PPM

NOTE: IAQ low Reference @ 4mA and IAQ High Reference @ 20mA are used to set the linear curve of mA vs. PPM.

OAQ Low Reference @ 4mA

This is used when an OAQ sensor is installed on Input 1 or 2. This value is displayed and used when 4mA is seen at the input.

Factory Default = 0 PPM Range = 0-400 PPM

OAQ High Reference @ 20mA

This is used when an OAQ sensor is installed on Input 1 or 2. This value is displayed and used when 20mA is seen at the input.

Factory Default = 2000 PPM Range = 0-5000 PPM

NOTE: OAQ low Reference @ 4mA and OAQ High Reference @ 20mA are used to set the linear curve of mA vs. PPM.

Economizer

Economizer Exists

This point tells the controller if there is an economizer installed on the unit.

Factory Default = NO if no economizer YES if there is an economizer installed

Economizer Minimum Position

This defines the lowest economizer position when the indoor fan is running and the building is occupied.

Factory Default = 20% Range = 0-100 %

Economizer High OAT Lockout

If the outdoor air temperature rises above this value, economizer cooling will be disabled and dampers will return and stay at minimum position.

Factory Default = 75_F Range = 55-80_F

Power Exhaust Setpt

When the economizer damper position opens above this point the power exhaust operation will begin. When the damper position falls 10% below the setpoint, the power exhaust will shutdown.

Factory Default = 50% Range = 20-90 %

NOTE: This point is only used when Continuous Occ Exhaust = NO

Continuous Occ Exhaust

This point tells the controller when to run the power exhaust if equipped on the unit. If set to YES, the power exhaust will be on all the time when in occupied mode and will be off when in unoccupied mode. If set to NO the power exhaust will be controlled by the Power Exhaust Setpoint.

Factory Default = NO

IAQ

Max Differential CO2 Setpt

If the difference between indoor an outdoor air quality becomes greater then this value the damper position will stay at the IAQ Greatest Min Dmpr Pos. configuration point

Factory Default = 650 PPM Range = 300-950 PPM

IAQ Greatest Min Dmpr Pos.

This is the greatest minimum position the economizer will open to while trying to control the indoor air quality, CO2 differential.

Factory Default = 50% open Range = 10-60% open

Clockset

This submenu screen allows you to set the date and time manually. The Daylight Savings Time (DST) can also be changed here. The date and time is automatically set when ever software is downloaded. The clock is a 24 hour clock and not am/pm. The time should be verified (and maybe changed) according to unit location and time zone.

Factory Default = Eastern Standard Time

USERPW

This submenu screen allows you to change the user password to a four number password of choice. The User password change screen is only accessible with the Administrator Password (1111). The ADMIN password will always override the user password.

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