McQuay MicroTech III RAH User Manual

42 McQuay OM 920-1
Keypad/Display Menu Structure
Sensor Loc is an adjustable item which is used to select the location of the humidity sensor.
The location is selected by setting the Sensor Location value on the keypad to Return, Space,
or OAT. The significance of the sensor location is that this determines which temperature
sensor is use to calculate the Dewpoint. OAT can only be selected for units with DAT control.
Mn Lvg Coil T is an adjustable item which is used to set the minimum leaving coil
temperature (Default = 48°F).
Mx Lvg Coil T is an adjustable item which is used to set the maximum leaving coil
temperature (Default = 55°F).
Min Reheat Spt is an adjustable item which is used to set the minimum DAT during
dehumidification.
Max Reheat Spt is an adjustable item which is used to set the maximum DAT during
dehumidification.
RH Sen Type is an adjustable item used to define the field supplied humidity sensor input
signal type.
RH Min Signal is an adjustable item used to define the minimum value of the field supplied
humidity sensor current or voltage signal.
RH Max Signal is an adjustable item used to define the maximum value of the field supplied
humidity sensor current or voltage signal.
Min Dehum Spd is an adjustable item used to set the minimum VFD speed on VAV units
when dehumidification is active.
Max Dehum Spd is an adjustable item used to set the maximum VFD speed on VAV units
when dehumidification is active.
Rht Min Pos is an adjustable item used to set the minimum reheat valve position when
dehumidification is active
Rht Dec Rate is an adjustable item used to set the rate at which the reheat valve will close
when dehumidification becomes inactive.
Alarm Out Configuration Setup Menu
The digital alarm output indicates the alarm group that contains the highest priority active
alarm. This output is On when no alarms are active. The options for the action of this output
when an alarm in a group occurs are On, Fast Blink, Slow Blink, or Off. These can be edited
via the keypad/display. The default values for the three groups of alarms are:
• Faults - Fast Blink
• Problems - Slow Blink
• Warnings - Off
A user could eliminate any signal of a particular group of alarms through this output by
selecting On for that alarm group in the keypad/display.
Table 37: Alarm Out Configuration Setup Menu
Menu Display Name Item Display Name Default Setting Range Password Level
Alarm Out Config Faults= Fast On 4
Off
Fast
Slow
Problems= Slow On 4
Off
Fast
Slow
Warnings= Off On 4
Off
Fast
Slow

McQuay MicroTech III RAH Specifications

General

Brand	McQuay
Model	MicroTech III RAH
Category	Controller
Language	English