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EGW05-SWHPEG-20140724
TM
TM
SMOKE PURGE INPUT (SR ONLY) (4)
The ECC III can receive a contact closure from a building fire and smoke control system. This input must be connected
to dry (voltage free) contacts only. When this input is activated, the ECC III will energize the return fan only and
will open the exhaust air damper to 100%, while closing the outside air intake and recirculation dampers to 0%. The
compressors will be disabled during this mode, and the RIU will display an alarm message indicating that smoke purge
mode has been activated. Using the ECC III configuration menu, it is possible to set this input to be active on open or
active on close.
FIRE TRIP INPUT (5)
The ECC III can receive a signal from a building fire and smoke control system. This input must be connected to dry
(voltage free) contacts only. When this input is activated, the ECC III will shut down the compressors and all unit-
mounted fans, and will close the outside air and exhaust air dampers. The RIU will display an alarm message indicating
that fire trip mode has been activated. Using the ECC III configuration menu, it is possible to set this input to be active
on open or active on close.
OCCUPIED MODE INPUT (6)
The ECC III can receive a contact closure from a Building Automation System (BAS) or from a time clock to override
the occupancy schedule stored in the controller’s memory. This input must be connected to dry (voltage free) contacts
only. If the schedule is currently requesting unoccupied operation, activating this input will force the controller into
occupied mode. Although this input overrides the ECC III internal schedule, it will not override commands sent to the
controller via the LonWorks or Modbus RTU interfaces.
PURGE MODE INPUT (SR AND SEP) (7)
The ECC III can receive a contact closure from a remote mounted switch or from a BAS. This input must be connected
to dry (voltage free) contacts only. When activated, the controller will shut down the compressors. During purge mode
operation, the ECC III will attempt to maintain space temperature with the auxiliary heating system. If the supply air
temperature drops to 40°F, purge mode is automatically terminated to provide freeze protection. Purge mode commands
sent to the ECC III through the LonWorks or Modbus RTU interface take precedence over the purge mode input.
REMOTE EXHAUST FAN INTERLOCK (S ONLY) (8)
The ECC III can provide a contact closure to enable a remote exhaust fan. These contacts will close during an occupied
time period in the ECC III occupancy schedule. The contacts may be directly connected to an external circuit, provided
it is 24 VAC maximum and the current does not exceed 1A inductive.
ALARM OUTPUT (9)
The ECC III will activate the alarm output when uncleared alarms are present. This output mimics the status of the red
alarm light on the RIU. The output provides form C dry contacts. The contacts may be directly connected to an external
circuit, provided it is 24 VAC maximum and the current does not exceed 1A inductive.
AUXILIARY POOL WATER HEATING SYSTEM (10)
The auxiliary pool water heating system is not provided by PoolPak™. The ECC III provides a dry contact closure that
signals a need for auxiliary water heating. The contacts may be directly connected to the heater control circuit, provided
it is 24 VAC maximum and the current does not exceed 1A inductive. Any other application will require the use of an
additional field-provided and installed relay to interface to the heater. The auxiliary heating system must provide its own
thermostat, wired in series with the output of the ECC III. Typically, the set point for this thermostat is 2°F above the
pool water temperature set point in the ECC III.
