Ventilation units with heat recuperation
DUOVENT
®
MODULAR DV/RV
33
Mixing mode (MX)
- ODA + EHA damper open to 100 %, MX damper open according to the required amount of mixing air.
Circulation mode (C)
- damper ODA + EHA completely closed, damper C open to 100 %.
Control torques and types of bypass and mixing flap actuators:
DUOVENT
®
MODULAR RV 8500/10100/12000/14500
MX/C
10
NM24 A-SR
5.2.10 INLET AND OUTLET FLAP OF DUOVENT MODULAR DV/RV
In basic version the unit is fitted with inlet flap for fresh and waste air (ODA and EHA). The arrangement of the flaps in the unit is shown on the
picture above.
When using a variant of the unit with a water heater DCA or DCB, it is recommended to mount an actuator with an emergency function on the
fresh air inlet flap.
Control torques and types of inlet damper actuators
5.2.11 BASIC ACCESSORIES OF DUOVENT
®
MODULAR DV/RV UNITS
5.2.11.1 CONDENSATE DRAIN SIPHONS
Condensate siphons must be ordered as a separate item, they are not included in the delivery of the unit. Detailed description of siphon types -
see. chap. 5.2.7.
5.2.11.2 ESU WATER HEATER OR ESUCH WATER COOLER CONTROL UNIT
The ESU or ESUCH node must be ordered as a separate item, it is not part of the delivery of the unit.
The mixing control unit is used to control the flow or temperature of heating (cooling) water to the water heaters/coolers. The ESU node regulates
the heating water inlet temperature to the water heater by mixing the inlet water and return, the ESUCH node regulates the flow of cooling water
to the water cooler at a constant cooling water inlet temperature (designation in the type symbol indicates pump type and Kv value of mixing
valve). The control is provided by a BELIMO servomotor. For control nodes in cooperation with Digireg
®
control, it is necessary to use version B,
which features a three-point actuator, designed for control by a Digireg
®
controller. Version A can be controlled by a
0… 10 V signal. In addition to
power control, the control system also protects the water heater against freezing with the help of an ESU node. The water flowing through the
unit may not contain impurities, solid admixtures and aggressive chemicals that damage copper, brass, stainless steel, zinc, plastics, rubber. The
highest permitted operating parameters of the heating water are as follows:
•
•
•
Maximum water tempe110 °C
Maximum water pressure 1 MPa
Minimum water pressure 20 kPa
The water temperature must not fall below the ambient air temperature during operation, as there is a risk of condensation in the pump motor.
The minimum operating water pressure ensures that no air is sucked in by the vent valve, which must be mounted at the highest point of the
water circuit.
CAUTION!
The design of a suitable mixing unit must be
!
individually adapted to the conditions of the
application in order to ensure sufficient valve
authority!
Unit type
min. control torque
[Nm]
possible types of BELIMO
actuators
possible types of BELIMO
actuators with emergency
function
DUOVENT
®
MODULAR DV/RV 8500
10
NM24 A
NF24 A
DUOVENT
®
MODULAR DV/RV 10100/12000/14500
20
SM24 A
SF24 A
Unit type
flap type
min. control torque
[Nm]
possible types of BELIMO
actuators
