11
UAB KOMFOVENT we reserve the right to make changes without prior notice
RHP STANDARD_guide_21-03
3.2. Additional zone control (ZN)
This function allows controlling up to three different temperature zones with one air handling unit. Temperature of the
main zone is maintained by integrated heaters/coolers. Temperature in other zones is maintained by connected additional
zone modules
1
, which are used to control duct-mounted heating/cooling devices. Every additional temperature zone will
also have a separate temperature sensor and a separate setting for the desired temperature that the user will be able to set
with the control panel.
An additional zone module may also control heaters/coolers installed in the same supply air flow, when more heating/
cooling power stages are required or a pre-heater is connected upstream the air handling unit.
For more information about this function and connection of heating/cooling devices see “Additional zone control C5”
Instruction Manual.
For information on how to activate this function and set a desired temperature value see Chapter “Control and Settings”.
3.3. Combined water heater/cooler
It is possible to use only one water heater and one piping unit (mixing valve, valve actuator, circulation pump) both for
heating and cooling. For the function to work properly, an additional external signal (e.g., from a thermostat) is required to
switch between heating and cooling modes (see “Installation Manual”).
This feature is pre-ordered and configured at the factory. Later, settings of this function may only be changed by a service
representative.
3.4. Control of direct evaporation (DX) devices
When the unit is ordered with an additional direct evaporation (DX) coil, a feature for controlling an external DX unit is
enabled. There are several different ways to control the DX unit:
• Modulated control – DX device is controlled by 0..10 V signal.
• Stepping control – START/STOP type DX devices are used.
This feature is pre-ordered and configured at the factory. Later, settings of this function may only be changed by a service
representative.
3.5. Water flow monitoring function
Water flow monitoring function is intended for additional protection of a water heater coil. Flow sensor monitors water
flow and emits a signal as soon as it slows down to a critical limit or stops completely. Then the air handling unit is stopped
and the control panel displays an error message.
Water flow can decrease for a variety of reasons, for example, faulty water pump or jammed valve; decreased water flow
is extremely dangerous at low outdoor temperatures as water could freeze and damage the heat exchanger. If this function
is ordered in advance, the air handling unit is equipped with a water flow sensor and a 3-way valve for installation thereof.
For more information please see the “Water Flow Monitoring Function Manual”.
1
Sold separately.
Summary of Contents for RHP Standard
Page 1: ...RHP Standard USER MANUAL EN ...
Page 2: ......