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ADDITIONAL SUPPLEMENTARY FEATURES OF THE J+ CONTROL
The J+ control has 3 inputs that can be used to interface
to additional equipment. These inputs are enabled when
24VAC is applied.
Energy Recovery
An Energy Recovery Ventilator can use the [ERV] input
to have the J+ unit run the fan. If the fan is already run-
ning, the fan will continue to run at the speed set by the
active thermostat inputs. If the fan is not running the fan
will run at the [ERV] fan setting.
Humidifier
The Humidifier [HUM] input can be used to have the J+
control enable an external humidifier by using the
[HUMDFR] relay output. The [HUMDFR] relay output is a
dry set of contacts.If the fan is running already the fan will
continue to run at the speed set by the active thermostat
inputs. If the fan is not running the fan will run at the humid-
ifier [HUM] fan setting.
HP Defrost
The Defrost input [DFS] input can be used by a heat pump
to notify the J+ control that it has entered defrost mode. In
this mode the W2 relay output will be enabled, and if the
fan is running already the fan will continue to run at the
speed set by the active thermostat inputs. If the fan is not
running the fan will run at the defrost [DFS] fan settings.
Aux2 & Aux3
In a unit that is commissioned for ESP. The Aux2 terminal
will always be energized during any cooling call and the
Aux3 terminal will always be energized in a heating call..
In a unit that is commissioned for WCSP. The Aux2 and
3 terminals are designed to work with the Spacepak Air
to Water Heat pump family of products. Aux2 will be wired
to the “remote on/off” terminals located in the air to water
heat pump electrical compartment and Aux3 will be wired
to the “Heat/Cool” terminals of the air to water heat pump.
Refer to your specific air to water heat pump for the exact
terminal numbers, wiring locations and follow the recom-
mended piping practices detailed in the manual for the
specific air to water heat pump.
DEFAULTS
*UNIT MODEL and UNIT SIZE are not reset when loading Factory Defaults