ENGLISH
20
IV.11. Night Cooling
This function is used in summer to cool building interiors at night using outside air. This helps reduce the quantity of cold
air required during the daytime. The Night Cooling function only operates from 00:00 to 07:00. During Night Cooling, the
hot and cold outputs are locked to 0 V. The heat exchanger delivers exclusively fresh air (wheel stopped). On termination
of the Night Cooling stage, the heating is locked to 0V for 60 minutes.
Conditions of operation: definable parameters in section V.5.b.2
The external temperature exceeds 22° C during daytime
•
The timers are set to LS and for shutdown between 00:00 and 07:00.
•
The external temperature is below 18° C during Night Cooling operation
•
The external temperature exceeds 10° C during Night Cooling operation
•
The ambient room temperature exceeds 18° C
•
During Night Cooling, the fans run at 85% of full speed. This speed is settable (see section V.5.b.2).
For LOBBY
®
versions, a 24 V output (to be connected by relay) is available across terminals 22 and DO7 to force opening
of the area dampers during Night Cooling.
IV.12. Integral heater coil (PREMIUM BC) and cooling or changeover coil in duct
Be careful not to impede opening of the access doors (pipes, cables, etc.)
The coil is already installed in the system in PREMIUM BC versions, the antifreeze thermostat is connected. The 3-way
valve must be connected electrically. If a cooling or changeover coil is used in the duct, move the supply sensor
downstream of the coil.
THE VALVE MUST ONLY BE CONNECTED WHEN THE ELECTRICAL CIRCUIT IS POWERED OFF
Connect the servomotor of the 3-way valve as follows:
Heater battery:
Terminal
15
to +24 V (G) of the valve servomotor
Terminal
16
to 0 V (G0) of the valve servomotor
Terminal
17
to +10 V (Y) of the valve servomotor
Connect the NF contact (C and 2) of the
THA
(antifreeze thermostat ) to
5
and
6.
Possibility to control the hot water circulator to the system at the terminals DO3 of the controller and connection terminal 18.
(Caution: the 24 V output is to be connected via a relay)
Cooling coil:
For systems equipped with cooling coil integrated in the duct, the supplementary module is equipped with a
condensate collector. Provision must be made for collection of condensate via a siphon.
Terminal
28
to +24 V (G) of the valve servomotor
Terminal
29
to 0 V (G0) of the valve servomotor
Terminal
30
to +10 V (Y) of the valve servomotor
Connect the NF contact (C and 2) of the
THA
(antifreeze thermostat ) to terminals
5
and
6
.
Possibility to control the cold water circulator integrated in the system at the terminals
DO4 of the controller and connection
terminal 19.
(Caution: the 24 V output is to be connected via a relay)
HEAT EXCHANGER
Summary of Contents for VORT NRG 1500 ECR
Page 40: ...ENGLISH 40 VIII APPENDICES VIII 1 Control diagram ROUE WHEEL FUSE CLAMP...
Page 50: ...ENGLISH 50 IX NOTES...
Page 83: ...FRAN AIS 83 VIII ANNEXES VIII 1 Sch ma de commande...
Page 93: ...FRAN AIS 93 IX NOTES...
Page 126: ...DEUTSCH 126 VIII ANLAGEN VIII 1 Schaltplan der Steuerung ROUE RAD MORSETTO FUSIBILE...
Page 136: ...DEUTSCH 136 IX ACHTUNG...
