McQuay PDHA Especificaciones descargar pdf (Pagina 16)

Catalog 1300-1 / Page 16 of 42

Applied 16" × 42" Chassis Common Features

Display Inputs:

ON/OFF Turn the unit on and off

Increase the temperature set point

Decrease the temperature set point

MODE Select one from the following

modes: COOL, COOL/DRY, FAN,

or HEAT

FAN MODE Change the mode of fan operation

between CYCLE and

CONTINUOUS

FAN SPEED Change the speed of the fan

between HIGH and LOW

SLEEP Activate the sleep mode and set

the sleep time

PROG ON/OFF Button to activate and deactivate

the program mode

Master-Slave Control (Optional)

A single master unit can be congured to con-

trol up to 32 slave units. The master unit controls

on/off, fan, settings and sleep functions for the

secondary units.

LED with

Program Setting

Display

8- Push Button

Display Inputs

9-LED

Indicators

Premium (7-Day Programmable) Digital Touchpad

• Provides all the features of the Standard Con

troller, plus master/slave, infra-red control, auto

damper, wall mounted remote thermostat, heat

fan lockout

Digital Touchpad with Automatic Changeover from

Cooling to Heating & Heating to Cooling

Available with the Programmable LUI (668003801)

and Premium Board (667997301) only. The Auto-

Changeover board has a new control set with a touch-

pad label that shows, “AUTO”. The Auto Changeover

control provides:

• Auto changeover from heat to cool and vice versa

• LED's from top down that read: Sleep, Cool, Auto,

Fan, and Heat

AUTO Non-Programmable Mode:

• Display shows both HEAT and COOL icons

• Temperature set point displays between the HEAT

and COOL icons

• Setpoint is adjusted with Up and Down arrows

• Heating initiates when the room temperature falls

one degree below the thermostat setpoint. Heating

terminates when the room temperature reaches two

degrees above the setpoint

• Cooling initiates when the room temperature

reaches one degree above the thermostat setpoint.

Cooling terminates when the room temperature falls

two degrees below the setpoint

AUTO Programmable Mode:

• HEAT and COOL icons alternatively ash with

their respective programmed setpoints

• The system engages cooling and heating automati

cally to maintain respective setpoints according to

system model selection

• The 2-degree gap between setpoints represents the

deadband and is necessary to prevent unecessary

switching between heating and cooling

The 2 degree deadband provides the following:

• Heating activates when the room temperature is

one degree below the thermostat setpoint plus the 2

degree deadband.

• Cooling activates when the room temperature is

one degree above the thermostat setpoint plus the 2

degree deadband

AUTO

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McQuay PDHA Especificaciones Pagina 16

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