Schwank ThermoControl Plus 4 - Manual (Page 29)

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6.7 Exhaust fan output connection – For Two-stage Luminous Zone ONLY
REFER TO ZONE AND EXHAUST FAN SCHEMES IN 6.6 AND LUMINOUS HEATER WIRING
DIAGRAM. Exhaust fan output connections (10 to 17) are reserved for luminous two-stage
zones ONLY!
Use 24VAC Class 2 rated power relay (field supplied) to switch line voltage to an
exhaust fan that serves both the proportion of heater in the low-stage zone, and the balance of the
heaters in the high-stage zone.
Two control circuit outputs belong to one common exhaust fan control output. For example:
connections 10-11 is the common exhaust fan for heating outputs 20-23 = zone 1-Low and zone 1-
High. If one or both heating zone outputs are activated, the exhaust fan output will be activated
also. When both heating zone outputs switch off, the exhaust fan also switches off immediately or
can be delayed (run on) to switch off after a programmable period of time (chapter 5.2).
For single stage zones the exhaust fan is controlled by the heater outputs 20-35 and the exhaust
fan outputs should be locked off (chapter 5.2).
6.8 Alarm contact input (e.g.: Fire Alarm system input, etc.)
Connect dry contact to this input. The contact must be provided by low voltage Class 2 rated
equipment.
If the dry contact is interrupted, the contro ller switches off all heaters and exhaust fans
independently. At the same time “ERROR” starts to blink on the display and the “ALr” symbol
appears in the display. If the contact is not used, bypass the connections.
6.9 Remote-Control
Connect dry contact to this input. The contact must be provided by low voltage Class 2 rated
equipment.
The feature Remote-Control can be selected in the SETUP-Menu (5-2). The controller switches to
day mode in both zones, if the remote contact is activated. The display shows the symbol. If
the remote contact is not used, bypass the connections.
6.10 Signal input fault
Connect dry contact to this input. The fault signal must be provided by low voltage Class 2
rated equipment.
The feature contact input fault can be selected in the SETUP-menu (5-2). The external error
message can be connected to inputs 72-73. In case of an error message (option) the signal ERR
and RES as well as ERROR light begins to blink. At the same time the Error relay switches on. The
operation mode of the controller is not changed due to the error signal.
6.11 Temperature display ºF / ºC selection
Switch off main power supply before making any changes to this jumper!
Select the ºF / ºC
temperature display mode by jumper location (see figure 6.4 Wiring Connection ). After selecting
the readout all displays and settings will automatic ally appear with the se lected mode. Factory
setting of this selection is ºF. Set values for ºF / ºC are stored separately - after modifying selection
you must set actual values (no automatic conversation here).
If the remote contact is activated it
is not possible to change the
operating mode by using the
FIX
button. A warning signal "rE.c"
(remote contact) appears in the
display.