ALNOR HRQ-SW3-I Suspended Heat Recovery Unit User Manual
- June 13, 2024
- alnor
Table of Contents
ALNOR HRQ-SW3-I Suspended Heat Recovery Unit User Manual
Control
Ventilation units can be controlled in several ways:
The HRQ-SW3-I rotary switch is an option for wired control of the ventilation
unit and allows you to choose between 3 speeds (AWAY, HOME, HOME +)
4-button controller
**HRQ-BUT-LM11
**
HRQ-BUT-LM04
This controller allows you to choose between 4 modes. The LM04 model has an AUTO button (instead of PARTY), recommended when there is at least 1 CO2 or RH sensor in the system. Signalling of operation and errors by means of a LED diode.
Controller LCD, flush-mounted (HRQ-BUT-LCD)
This version has an LCD display, allows you to select 1 of 7 operating modes, program the calendar and read additional operating parameters such as temperatures, current fan speeds or the by-pass status. It also allows you to configure ventilation speeds (according to user preferences).
Application for Android, iOS and via a browser (via the HRQ-GATE internet gateway)
**Aplication
**
HRQ-GATE
The gateway is connected to the local network via the Ethernet port. Communication with the device is wireless. On-line control is possible after installing the application on Andriod and iOS or via a browser on a computer. The application graphically illustrates the operation of the device, allows you to change modes and read basic parameters.
Control via CO2 and RH sensors (we recommend as additional control).
**HRQ-SENS-CO2
**
**HRQ-SENS-RH
**
RQ-SENS-I-CO2
(flush-mounted)
Each sensor also functions as a controller – it allows you to select from manual modes and, of course, engage AUTO mode. Indicates errors or dirty filters, but there is no filter status reset option.
Modbus gate (HRQ-MODBUS),
HRQ-MODBUS gate, which allows to control the device using the universal modbus protocol and RS485 data transmission.
Each sensor also acts as a controller – it allows you to select modes manually and, of course, triggering AUTO mode. Indicates errors or dirty filters, but there is no filter status reset option. Suspended heat recovery unit with a plate heat exchanger HRU-PremAIR
NOTE!
Controller is not included in the kit. During purchase, choose the controller
that is right for you. Multiple controllers can be connected at once – e.g.
4-button controller and an Internet gateway
Control options table:
Model| Photo| Communication
with unit| Power
supply| No of
modes| AUTO
mode’| Display| Calendar| signalization
Dirty filter| Changing
speed
settings
---|---|---|---|---|---|---|---|---|---
HRQ-SW3-I| | cable
| 230V
| 3| no| no| no| no| no
HRQ-BUT-LM11| | wireless
| battery
| 4| no| no| no| yes| no
HRQ-BUT-LMO4| 
| wireless
| battery
| 4| yes| no| no| yes| no
HRQ-BUT-LCD| | wireless
| 230 V
| 7| yes| yes| yes| yes| yes
HRQ-GATE| | wireless
| 230 V
| 6| yes| yes| no| yes| no
HRQ-SENS-0O2HRQ-SENS-I-0O2| 
| wireless
| 230 V
| 5| yes| no| no| yes| no
HRQ-SENS-RH| 
| wireless
| battery
| 4| yes| no| no| yes| no
HRQ-MODBUS| | wireless
| n/d| 7| yes| no| no| yes| no
requires at least 1 CO2 or RH sensor
Demand Control Ventilation, DCV
The AUTO mode is the most energy-efficient and demand driven mode of PremAIR
units. Operation in the AUTO mode is possible when at least one carbon dioxide
CO2 or relative humidity RH sensor operates in the system.
In AUTO mode, the sensor (or several sensors) generates the so-called
ventilation demand based on ambient air measurements.
This request is sent wirelessly to the control board, which sets the
efficiency of the fans in the range defined by AWAY and HOME(+ offset) speeds.
It means, that in the case of factory settings, the range will be 15-70%.
The RH sensor will guard against excessive moisture.
If there is a sudden increase in relative humidity (more than 3% within 24
seconds) or the reading exceeds 85%, the sesnor will send 100% demand to the
control panel to effectively and quickly reduce the RH level.
The CO2 sensor will keep the carbon dioxide concentration below the specified
level (the factory default is 800 ppm, you can choose between 700,800,900,1000
and 1100 ppm) thanks to the proportional PID algorithm.
This means that the request sent to the control board will change gradually
over time until the CO2 concentration decreases.
HRU-SENS-C02 sensors have 2 AUTO modes: Comfort and Eco. Comfort is the basic
setting (i.e. 800 ppm by default), while Eco increases the limit by 250 (i.e.
1050 by default). The CO2 sensor is available in the following versions:
surface HRQ-SENS-CO
flush-mounted HRQ-SENS-I-CO2
In case of having several sensors, the unit control board will operate according to the highest indication (highest request). In the absence of any demand from the sensors, the ventilation unit will run at AWAY speed (lowest setting).
Constant Flow (CF)
PremAIR air handling units optionally can be equipped with the Constant Flow system, whose task is to maintain a constant air flow in the installation. CF works by reading the difference between the dynamic pressure around the fan and the static pressure in the duct in front of the fan. The CF system constantly monitors the pressure in the ducts and if the resistance increases, it increases the speed of the fans to maintain a constant flow, such as on the first day when the ventilation unit was commissioned. During exploitation, the installation pressure is naturally disrupted (dirty filters, condensation of water in the heat exchanger, temperature difference changing the air mass). CF counteracts to those changes, thanks to which the airflows remain sustainable, and only a sustainable system takes full advantage of the air handling unit’s capabilities.
Performance
Key performance features:
-
Heat recovery:
HRU-PremAIR-350 – up to 90.3%
HRU-PremAIR-350-CF – up to 90.3%
HRU-PremAIR-350E – up to 91.2%
HRU-PremAIR-350E-CF – up to 91.2%
HRU-PremAIR-450 – up to 90.3%
HRU-PremAIR-450-CF – up to 90.3%
HRU-PremAIR-450E – up to 91.2%
HRU-PremAIR-450E-CF – up to 91.2%
HRU-PremAIR-500 – up to 82.6%
HRU-PremAIR-500-CF – up to 82.6% -
Entalphy exchangers with antimirobial properties of the membrane, sesistant against mold and bacteria
-
Hi-tech modern casing made of Expanded Polypropylene – EPP
-
High mechanical resistance
-
High thermal and acoustic insulation
-
Modulated by-pass
-
Constant Flow system
-
Free-cooling functions – also referred as Passive Cooling (no energy is needed) or Night Cooling (mostly happens during night), can be used to cool a building with outdoor air, when the room temperature is higher than the outside temperature
-
Free-heating functions – also referred as Passive Heating (no energy is needed), can be used to heat a building with outdoor air, when the room temperature is lower than the outside temperature
-
Performance tested according to EN 13141-7 standard
-
Complies with ErP2018
-
Wall mounting racks and feet included
-
Replaceable duct connections
-
Wireless control through mobile application or web browser
-
Remote control possible by any CO2 or RH wireless sensor
-
Light weight construction – only 32 kg!
-
POLISH product
Design
- NSL connector (4pcs.)
- Control circuit cover
- Supply fan
- Extract fan
- Bypass damper
- Control circuit
- Handling chassis
- HRU casing
- Front cover
- Heat exchanger
- Extract filter cove
- Extract filter G4
- Supply filter cover
- Supply filter G4
- Mounting foot (4pcs.)
- Clamp (4pcs.)
Cooperation with the kitchen hood
The cooker hood can be connected to the MVHR system via the X25 contact on the main board of the SlimAIR heat recovery units. It is a potential-free contact. Short-circuits of contact inputs will result in an exhaust fan stopping completely during the period the contact is closed.
Connecting the ground heat exchanger
Heat recovery unit has a possibility to connect the ground heat exchanger. This function allows you to control a valve that optionally supply air through the ground-to-air heating system. To do this, install a dedicated damper with the actuator (DATVTML).
Damper works by electric actuator DM-ML-06-230.
For quick mounting of the actuators we recommend specially designed stands DA-
SUP-S and DA-SUP-M.
Connection
When you mount the actuator to the damper, you should remember to:
-
the damper was open in the HRU-OUTDOOR direction (not GHE).
-
the HRQ-SENS-500 external air temperature sensor should be routed and connected to the outdoor duct, placed before the air damper with the actuator. The temperature sensor should be connected to the X22 connector on the HRV control board.
-
if the actuator can be mounted in the left-right position, make sure it is mounted correctly as described below
In order for the valve to operate correctly, the dumper with a DM-ML-06-230
electric actuator should be connected to X28 in the following order:
The automatics controls the valve based on the temperature at the outdoor. If
the Temperature outdoor is lower than the Geothermal Heat Exchanger Outdoor
Temperature Below or higher than the Geothermal Heat Exchanger Outdoor
Temperature Above the valve will be opened and the air going to the unit will
be taken from the ground heat exchanger. Values Geothermal Heat Exchanger
Outdoor Temperature Below and Geothermal Heat Exchanger Outdoor Temperature
Above are set in deafult mode for 5°C and 25°C. They can be edited from the
service tool and the LCD Display controller.
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