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Service Button
Fig. 4 shows the hardware overview with the location of
the service button, not the dedicated events. It is
important to distinguish different controller behaviors
elicited depending on whether the service button is
pressed when the controller is powering up or in normal
operation.
See the following dedicated events:
Pressing Service Button during Power-Up
If the service pin is pressed and the controller is
switched on (while the service pin is still pressed), a
reset to factory is performed. The service button must
be pressed until the green power LED goes out at least
twice and is switched on again. Factory defaults are as
follows:
• The application is cleared from the controller.
• The MAC address will be set to 0xFF, meaning that
the controller will now search for a new MAC address
(Auto MAC will be automatically triggered after
controller power-up).
• The maxMaster setting will revert to its default value
of 127.
• The max info frames will revert to 10.
• The device instance will revert to its default of
4194302.
• The device name will revert to [Model Name].
• The Auto MAC is by default true and Min MAC, Max
MAC will be reset to 1 and 127, respectively.
Pressing Service Button during normal operation
During normal operation of the controller, a short press
(< 1 sec) of the service button will cause a service button
message (BACnet™ WhoAmI as a Private Transfer
(SerialNo. = 130)) to be sent.
MOUNTING
Before Installation
IMPORTANT:
It is recommended that the unit be kept at room
temperature for at least 24 hours before applying
power. This is to allow the evaporation of any
condensation resulting from low shipping /
storage temperatures.
NOTE:
Avoid mounting in areas where acid fumes or
other corrosive vapors can harm the metal parts
of the controller or in areas where escaping gas or
other explosive vapors are present.
HONEYWELL UNITARY CONTROLLER - 230 VAC - INSTALLATION INSTRUCTIONS
DIN Rail Mounting
1. Mount the DIN rail on the wall/surface by using
screws.
Screw
2. Extend all red mounting clips to the unlock
position as shown in figure 7.
11
IMPORTANT:
US requirement, only: This device must be
installed in a UL-listed enclosure offering
adequate space to maintain the segregation of
the line voltage field wiring and Class 2 field
wiring.
CAUTION
CAUTION
To avoid electrical shock or equipment damage,
you must switch OFF the power supply before
attaching or removing connections to or from any
terminals.
Wall/Surface
Fig. 6 DIN Rail Wall/Surface
DIN Rail
Lock Position
Fig. 7 Lock Position
DIN Rail
Red Clip
31-00610-01
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