American Standard UV05 manual Using the Keypad/Display, Display Format, Keypad Functions

Getting Started

Getting Started

The MicroTech II Unit Vent Controller (UVC) is a self-contained device that is capable of complete, stand-alone operation. Information in the controller can be displayed and modified by using the keypad/display (local user interface). The following sections describe how to use the keypad/display.

Note – Many UVC parameters are accessible both through the keypad/display and the network interface. The shared keypad/display and the network interface variables have a “last- change-wins” relationship.

Using the Keypad/Display

The keypad/display shown in Figure 1 is provided with all MicroTech II Applied Unit Ventilator unit controllers. With the keypad/display, operating conditions, system alarms, and control parameters can be monitored. Set points and other parameters also can be modified.

Figure 1: Keypad/display

MicroTech IITM

FAN ONLY	HIGH
COOL	MED
HEAT	LOW	FUNC
AUTO	AUTO
MODE	FAN	ON /
		STOP

Display Format

The keypad/display’s 2-digit, 7-segment display normally shows the effective heating or cooling temperature set point (Effective Set Point Output). The display also is used to view and modify UVC parameters as explained in the following sections.

Note – When the UVC is in the OFF mode, the effective heating set point appears in the display. All other LEDs are switched off.

Keypad Functions

Security Levels

The keypad/display provides a 4-level password security feature that can be used to restrict access. The available security levels are shown in Table 6.

Note – All unit ventilator controllers ship with the lowest security (level 0) enabled. To change security levels, see Figure 2. Once a security level is changed, the keypad/display remains at that security level until the next time it is changed.

Why can’t I use the MODE or FAN key or adjust Set Point Offset?

Most likely this is due to the security feature being used. If the security feature is set higher than level 0, then some keypad/display functionality is locked out. To ensure this is not the problem, enter the level 0 password then try to use the keypad/display again.

McQuay OM 751 7