Installation, Operation and Maintenance Manual
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Figure 11 - Typical Indoor Evaporator Interconnection Points
The wiring connection for heat exchanger for units with Mini-dap4 controller may be different. Again, refer to unit
electrical diagram for details.
Remote Shutdown
Every Data Aire evaporator has a remote shutdown contact point available inside the electrical enclosure as part of
the control wiring. These are intended for a remote field supplied dry contact or switch to be wired across two
terminals. When the remote contact or switch opens, the control circuit power is interrupted, and the unit shuts
down, including the controller. The control circuit is 24 VAC and the field provided contact or switch and wiring
should have a minimum rating of 10 amps. A minimum of 18-gauge wire is recommended or use field-supplied Class
1 wiring.
The remote shutdown points are terminals TB1-1 and TB1-2 (to verify these points, see electrical diagrams supplied
with each unit to verify the exact TB designation). The unit is shipped with a factory installed jumper bar that
connects TB1-1 and TB1-2. Remove this jumper prior to installing the field wires when utilizing the remote shutdown
feature.
Remote Alarm Contacts
5.10.1
Mini-dap4 Controller
Units with a Mini-dap4 controller include one (1) combination Normally Open (Close on Alarm) and Normally Closed
(Opens on Alarm) dry contact remote alarm contact. See Figure 12 for the typical terminal connection points.
Figure 12 - Typical Mini-dap4 Remote Alarm Contact Terminals
The remote alarm contacts are field accessed and are intended to be used for a remote-control circuit. This remote
output contact is limited to 2 amps at 250 VAC. This alarm contact activates on a failure and remain energized until
the alarm is no longer present.
5.10.2
dap4 Controller
Units with a dap4 controller include four (4) combination Normally Open (Close on Alarm) and Normally Closed
(Opens on Alarm) dry contact remote alarm contacts. See Figure 13 for the typical terminal connection points.
