alnor 150 Heat and Energy Recovery Ventilators User Manual

alnor 150 Heat and Energy Recovery Ventilators

Specifications:

• Model: HRU-FlatAIR-150 /-200 /-225 /-250
• Dimensions:
  • Height: 932mm
  • Width: 550mm
  • Depth: 203mm
• Weight: Not specified
• Heat exchanger: Included
• Fans: Included
• By-pass: Included
• Filters: Included
• Pre-heater: Included

Product Usage Instructions

Safety:
Follow all safety instructions provided in the manual to prevent any injuries or accidents.

Installation:
Refer to the installation section in the manual for detailed steps on how to install the HRU-FlatAIR unit properly.

Usage:

1. Ensure the unit is properly installed and connected to the ventilation system.
2. Set the desired airflow level using the control panel.
3. Monitor the unit regularly to ensure proper functioning.
4. Clean or replace filters as recommended in the manual.

FAQ:

• Q: What should I do if the unit is not working?
  A: Check the power supply and settings. If the issue persists, contact customer support for assistance.

• Q: How often should I clean the filters?
  A: Filters should be cleaned or replaced according to the manufacturer’s recommendations, typically every few months.

User Manual
HRU-FlatAIR

 About this manual

Ventilation system description Complete ventilation system consists of:

• Heat recovery ventilation unit HRU-FlatAIR-150/ HRU-FlatAIR-200/ HRU-FlatAIR-225/ HRU-FlatAIR-250,
• Ducting with diffusers, plenum boxes, inlet and outlet valves, etc.Sterownik HRQ-BUT-LM11 (optional)
• Control button HRQ-BUT-LM04 (optional)
• Control button HRQ-BUT-LCD (optional)
• CO2 wireless sensor(s) HRQ-SENS-CO2 or HRQ-SENS-I-CO2 (optional)
• RH wireless sensor(s) HRQ-SENS-RH (optional)
• Internet bridge HRQ-GATE (optional)
• Tłumiki (opcja)

Mechanical ventilation provides the best level of comfort inside the building. This type of ventilation makes it very easy to manage the amount of air exhausted from the house and supplied to it.
Exhaust valves are installed in bathrooms and kitchens. Supply valves are installed in rooms and living rooms. All ducts shall be connected to the HRU- FlatAIR unit.
Under normal operating conditions (closed bypass and deactivated antifreeze protection), the unit operates in two directions: supply and exhaust. Supply air is drawn from outside and passes through a plate heat exchanger to the supply valves. Exhaust air is taken from the room and directed outside through the heat exchanger.
In the heat exchanger, heat is transferred from the exhaust air to the supply air without mixing the two streams. Using standard controllers, such as the HRQ-BUT-LM11, one of the fan speeds (low, medium and high) can be manually set. If the device is equipped with additional hardware – the HRQ-GATE internet gateway and an active internet connection, you can set these three speeds via the PremAIR mobile app.
If, in addition, CO2 and relative humidity sensors are installed, the speed can be controlled automatically depending on the CO2 concentration and relative humidity level (auto mode must be activated).

How to use this manual
This manual is intended as a reference book by which qualified installers can install the HRQ-FlatAIR and all optional device as well. This device must be used according to its purpose. Make sure you have read and understood the manual before you install and/or use the device. Please be informed that we are constantly working on development and improvement of our products hence minor differences between this document and your unit are possible.

Original instructions
The original instructions for this manual have been written in English. Other language versions of this manual are a translation of the original instructions.

Admonitions

WARNING :‘Warning’ identifies a hazard that could lead to personal injury, including death.

NOTE ’ Note’ is used to highlight additional information.

 Safety

General safety instructions

This product was designed and manufactured to ensure maximum safety during installation, operation, and service. Always read these safety instructions before installing, maintaining or servicing the product, and strictly comply with these instructions. Parts of the device carry mains power, which is a potentially lethal voltage. Disconnect power at supply line, circuit breaker or fuse before installing, servicing or removing the device. The device is designed for indoor use only.

Do not expose the device to rain or moisture, to avoid short circuit. Short circuit may cause fire or electric shock hazard. Operate the device between 0°C and 40°C. For cleaning of the device use a soft damp cloth only. Never use any abrasive or chemical cleaner. Do not paint the device. This appliance can be used by children aged from 8 years and above and persons with reduced physical, sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning use of the appliance in a safe way and understand the hazards involved. Children shall not play with the appliance. Cleaning and user maintenance shall no be made by children without supervision.

Directives / Norms

• ERP 2018 – regulation 1253/2014 and 1254/2014
• Low Voltage Directive (LVD) 2014/35/EC i Electromagnetic Compatibility Directive (EMCD) 2014/30/EU
• EN 308 – Heat exchangers – Test procedures for establishing performance of air to air and flue gases heat recovery devices.
• EN 13141-7 Ventilation for buildings – performance testing of components/products for residential ventilation – Part 7.
• EN 3744 – Acoustics – Determination of sound power levels and sound energy levels of noise sources using sound pressure.
• EN ISO 5136 – Acoustics – Determination of sound power radiated into a duct by fans and other airmoving devices – In-duct method.

 Technical data

1. Dimensions: 932x550x203 mm (H×W×D) – HRU-FlatAIR-150/ -200 / -225 / -250 [Rys 1.]
2. Weight: 22 kg – for HRU-FlatAIR-150 / -200 / -225 / -250
3. Heat exchanger: plate counter flow or enthalpic (optional)
4. Fans: EC fans
5. By-pass: built-in, automatic
6. Filters: ISO Coarse 70% / ISO ePM1 55% (optional)
7. Pre-heatear: built-in
8. Installation: vertical, overhead
9. Air flow:
   • HRU-FlatAIR-150-H 150m3/h (at 100 Pa) [Fig. 2]

• * HRU-FlatAIR-150E-H 150m3/h (at 100 Pa [Fig. 3] 

  • HRU-FlatAIR-200-H 200m3/h (at 100 Pa) [Fig. 4]
  • HRU-FlatAIR-200E-H 200m3/h (at 100 Pa [Fig. 5]
  • HRU-FlatAIR-225-H 225m3/h (at 100 Pa)[Fig. 6]
  • HRU-FlatAIR-225E-H 250m3/h (at 100 Pa) [Fig. 7]
  • HRU-FlatAIR-250-H 250m3/h (at 100 Pa)[Fig. 8]
  • HRU-FlatAIR-250E-H 250m3/h (at 100 Pa) [Fig. 9]

Internal tightness:

HRU-FlatAIR-150-H: maximum leakage 2,98% (klasa A1 wg EN 13141-7)

• HRU-FlatAIR-150E-H: maximum leakage 3,81% (klasa A2 wg EN 13141-7)
  • HRU-FlatAIR-200-H: maximum leakage 2,86% (klasa A1 wg EN 13141-7)

• HRU-FlatAIR-200E-H: maximum leakage 2,86% (klasa A1 wg EN 13141-7)

• HRU-FlatAIR-225-H: maximum leakage 2,83% (klasa A1 wg EN 13141-7)

• HRU-FlatAIR-225E-H: maximum leakage 2,54% (klasa A1 wg EN 13141-7)

• HRU-FlatAIR-250-H: maximum leakage 2,54% (klasa A1 wg EN 13141-7)

• HRU-FlatAIR-250E-H: maximum leakage 2,29% (klasa A1 wg EN 13141-7)

External tightness:

• HRU-FlatAIR-150-H: maximum leakage 3,38% (klasa A2 wg EN 13141-7)
• HRU-FlatAIR-200-H: maximum leakage 2,54% (klasa A1 wg EN 13141-7)
• HRU-FlatAIR-225-H: maximum leakage 2,25% (klasa A1 wg EN 13141-7)
• HRU-FlatAIR-250-H: maximum leakage 2,03% (klasa A1 wg EN 13141-7)

Construction:

1. Panel housing
2. Cover of the air handling unit
3. Air filter cap
4. Bypass (bypass) damper
5. Fan
6. Preheater
7. PCB control board
8. Nipple connector
9. Heat exchanger with integrated drip tray
10. ISO Coarse 70% air filter

Diagram of the main board (PCB):

• Description Socket number
• Fan 1 (supply) – signal X6
• Fan 2 (extract) – signal X5
• Fan 1 (supply) – line X13
• Fan 2 (extract) – line X14
• Temperature 1 supply X23
• Temperature 2 extract X11(built-in RH sensor)
• Temperature 3 exhaust X20
• Temperature 4 outdoor X22
• Temperature 5 – additional outdoor sensor X21
• Stepper motor X15
• Power supply X27
• Preheater X17
• 3-speed switch input X9 1 – open (low speed) 1-2 closed (medium speed) 1-3 closed (high speed)
• Fireplace/kitchen hood input X25 1-2 closed (extract fan off)
• Pressure transmitter (supply) optional X18
• Pressure transmitter (exhaust) optional X42

 Installation

Unboxing Complete set includes:

• Heat recovery unit (with all components from fig. 24) – 1 pcs
• User’s manual
• Basic installation kit: 4x double threaded screw, 4x wall plug, 4x washer, 4x nut
• Cardboard box with the frame diagram printed on one of the box flaps.

Vertical unit installation
The unit is suitable for vertical wall installation. The installation kit supplied with the unit can be used for this purpose. It is also possible to buy a frame (optional) for easier installation, especially for one person, in vertical or horizontally suspended position. Mounting elements are included with the frame.

Horizontal unit installation
The unit is designed to operate in a horizontal position on the wall. For this purpose, use the installation kit supplied with the unit.

Suspended unit installation
The unit is designed to be suspended from the ceiling. The installation kit supplied with the unit can be used for this purpose. It is also possible to buy a frame (optional) for easier installation, especially for one person. Assembly parts are included with the frame.

NOTE!
The supplied dowels are designed for concrete walls, solid bricks or cellular concrete. For other materials, use the appropriate wall plugs, screws, which can be purchased from a hardware store.

Installation of the recuperator does not require an angle. If there is room for it, tilting the lower edge of the unit (regardless of the type of installation) by max. 3° will have a positive effect on the removal of condensate from the unit.

If there is no space for a condensate drain trap, it is recommended to buy a condensate pump, which can be purchased at HVAC wholesalers.

Ducting installation

1. Usually the ducts are connected directly to Ø125 connectors. It is recommended to install additional silencers (on the supply and exhaust sides) to ensure high level of acoustic comfort. Description of connections:
   • SUPPLY – warm fresh air incoming to house
   • EXHAUST – cool stale air exhausted to outside
   • EXTRACT – warm stale air extracted from house
   • OUTDOOR – cool fresh air taken from outdoor
2. If you want use different duct connectors it is possible to unmount NSL male connectors and easily install replacement fittings (for example elbow, offset bend, etc.). NSL connector are snap-on mounted, to unmount them you need to pull them up using a some force. Optional fittings connected to HRU must be in male-ended according to ALNOR’s dimension standards (see our SPIRAL® catalogue with dimension tolerances). To provide the best tightness we suggest to use ALNOR’s products with gasket. We are not responsible for tightness if fitting are purchased from other companies

Maintenance space
The figure shows the minimum maintenance clearances needed to change filters, check the control circuit, remove the heat exchanger. Filters can be changed from two positions, side and front. Caps are made for each position so that the filter can be replaced without opening the front cover.

 First Start-up

Connection to electric power
Heat Recovery Unit has in standard power cable (length 3m and 4,5 m for HRU- FlatAIR-800/1000) to plug unit  in  socket. After connection to electric power HRU begins starting procedure. Firstly bypass is closing (the bypass will try close even it is physically closed. Do not worry about mechanical strength because it is not unsafe for bypass damper and motor).
Closing by pass takes about 2 minutes. After that fans start with default speed.

LED status
Control circuit cover is equipped with 2-color LED light (Green & Red) which informs user about actual status or faults of HRU-FlatAIR and serves as feedback for the installer.

Heat Recovery Unit has in standard power cable (length 3m and 4,5 m for HRU- FlatAIR-800/1000) to plug unit in socket. After connection to electric power HRU begins starting procedure. Firstly bypass is closing (bypass will try close even it is physically closed. Do not worry about mechanical strength because it is not unsafe for bypass damper and motor).
Closing bypass takes about 2 minutes. After that fans start with default speed.

LED status
Control circuit cover is equipped with 2-colour LED light (Green & Red) which informs user about actual status or faults of HRU-FlatAIR and serves as an feedback for the installer. c

1. When the button is pressed the binding mode is ended

Binding mode
Every time you switch electric power off and on again HRU-FlatAIR engages a binding mode (it lasts for 10 minutes, LED light is continuously green). When unit is in binding mode you can pair remote accessories (HRQ-BUT 4 button control, HRQ-SENS CO2 sensor, and RH sensor or BRDG Bidge – pairing procedure of all components are described in individual manuals attached to each product). After 10 minutes unit switches to normal operation mode (LED flashes green).

 Normal operation

Control variants
Depending on chosen controller, various types of control and different modes are available. Detailed information is included in the manuals for controllers.

Following symbols are printed on all control devices and are connected with fans speed:

• STANDBY mode Standby speed – fans are off
• AWAY mode  Low fan speed
• HOME mode  Medium fan speed
• HOME+ mode High fan speed
• TIMER mode High fan speed, for a limited time
• PARTY mode  Boost – highest fan speed (default 100%)
• AUTO mode Between Low fan speed and High fan speed + 10%, based on demand sent by external sensors

NOTE:
For auto mode, you need to have a minimum one VMS sensor paired with HRU.

NOTE:
We advise against switching of both fans for longer periods of time (few days or more). It can cause humidity accumulation and mouldiness and fungus growth. Even when house is empty and there is no CO2 and humidity production by people, still all building materials emit many different pollutions. We advise to set low speed during your home absence.

In normal operation mode there are several variants for controlling fans speed:

1. HRQ-BUT-LM04 or HRQ-BUT-LM11 (4 button controllers) – with this devices you can control fan speed manually by choosing one of three speeds: low (15%), medium (50%), high (70%), boost (100%). Detailed descriptions of all HRQ-BUT button functions can be found in manuals attached to each box.
2. HRQ-SENS sensors (RH sensor or CO2 sensor) – with these sensors you can control speed manually (by choosing low, medium or high speed) or automatically. In Auto mode sensors measure RH (relativehumidity) and CO2 concentration and then calculate speed fluently between low and high speed. In Auto mode, the highest demand (maximum value of all sensors) is maintained for at least 10 minutes. With HRQ-SENS sensors you can also choose speed manually by capacitive button. It works the same like in the HRQ-BUT button. Detailed description of all HRQ-SENS sensor functions can be found in manuals attached to each box.
3. Mobile application – to use the mobile application you need to have an HRQ-GATE bridge paired with the unit and properly configured Internet access. With PremAir application you can: change fans speed, check HRU status (normal mode, frost protection mode on, etc.) check faults, check temperatures and many more. To status (normal mode, frost protection mode on, etc.) check faults, check temperatures and many more. To check all options of application download it for free from Google Play or App Store by typing in „PremAir”.

Default settings for HRU-FlatAIR-150:

Default settings for HRU-FlatAIR-200:

Default settings for HRU-FlatAIR-225:

Default settings for HRU-FlatAIR-250:

Temperature measurement

The temperature sensors measurement capabilities are from -20˚C to 60˚C.

Supply sensor
The supply sensor measures the air temperature which is blown into the building after it has passed the heat exchanger.

Extract sensor
The extract sensor measures the temperature of air which is extracted from the building before it enters the heat exchanger or bypass valve.
Internal relative humidity sensor (exhaust)
The sensor is used to measure the total relative humidity from the exhaust rooms. When this value increases within a short time interval by 5% (adjustable within the range 0-25%), the purging system is activated, i.e. the speed increases to HOME+. In such a case, the unit operates at an increased speed until the relative humidity is reduced by at least 5% in relation to the starting moment or the humidity is reduced by 5% in relation to the highest value measured during purging.

When the conditions are adjusted to the initial condition, the unit will remain in purging mode for 15 minutes. If the average value of the measurements performed has not decreased by 5% when compared to the measurement before the speed increased, the unit will still operate at the HOME+ speed until next measurement. This cycle may last up to 1.5 hours.

Exhaust sensor (exhaust)
The exhaust sensor measures of air exhausted from the building after passing trought the heat exchanger.

Ambient temperature sensor (intake)
The ambient temperature sensor measures the temperature of the air taken from the outside before entering the heat exchanger.

Frost protection
Frost protection is achieved by reducing the supply fan’s revolutions to the minimum level of the fan. The whole process goes gradually, depending on the outdoor temperature drop. When the outdoor temperature continues to decrease and the fan has reached the set minimum revolutions, the extract fan will start to gradually increase its revolutions. The advantages of this method are a lower airflow unbalance in the system and the possibility for the unit to work with the pre-heater during the defrosting phase.

The algorithm works when:

• The outdoor temperature < (Defrosting set point for frost protection #40[-20]) + (Offset for frost protection defrost #114[22]) where #40 should be as low as possible as it is responsible for the frost temperature. The advantage of this method is lower imbalance of the flow system and the possibility of cooperation with the pre-heater during  defrosting operation.
• The [X] values are standard values programmed by the manufacturer.

NOTE:
After a power on, the frost protection mode is blocked for 5 minutes.

NOTE:
Frost protection mode is effective up to -2°C When the heat recovery unit is equipped with a built-in heater or an external preheater is connected to the system, if the temperature at the air inlet (Toutdoor) drops below -2°C (Toutdoor < -2) the heater will be switched on.

Preheaters

Built-in pre-heater
The heater is a component of equipment installed to protect the exchanger from freezing. The operating characteristics of the heater are shown in the following formulas and conditions:

1. The pre-heater is turned on when all of the following conditions are met:
   • (Toutdoor + Texhaust) / 2 < (Pre-heater setpoint #46[0˚C]).
   • Toutdoor < (Frost protection Pre-heater setpoint #39[-3˚C]).
   • The supply fan is on (necessary for heater cooling).
2. The pre-heater is turned off when at least one of the following conditions is met:
   • (Toutdoor + Texhaust) / 2 > (Pre-heater setpoint #46[0°C]) + (Pre-heater off temp difference #47[+3°C])
   • The supply air fan is turned off,
   • The temperature sensor on the outdoor air X23 is faulty,
   • Unit is in start-up (5min).

Water preheater CHDW-G-200 (optional)

The heat recovery unit has the ability to plug in a water preheater. The preheat function is designed to protect the heat exchanger from freezing. The device, through an internal algorithm, is responsible for switching on the liquid circulation pump in the system. The preheater shall be mounted on the supply air duct after the unit at a distance of not less than 0,5 m.. An external air temperature sensor HRQ-SENS-500 should be brought out, which should be mounted in the intake duct before the heater/cooler. Connect the additional outdoor temperature sensor to the X21 connector, and then use the service program or LCD display to change the TAG (#273) to 2 and the TAG value (#140) to 5.

Along with the installation of the CHDW-G-200 water preheater, it is recommended to remove the filter on the intake duct in the device.

The water preheater is controlled by sending a signal to the pump responsible for circulating the medium. The connection can be made in two ways:

1. The pump is powered directly from the recuperator motherboard via the X17 socket.
   The built-in preheater should be disconnected.
   To connect the signal plug from the pump, use JST NVR-03 female plug with connectors SVH-41T-P1.1JST

   • 1 N
   • 2 PE
   • 3 L

2. The pump is externally powered. The recuperator sends the signal responsible for starting the pump from the X16 socket
   To connect signal plug from the pump, use JST XHP-2 male plug and JST SXH- 001T-P0.6 connectors.

   • 1 (+) 0-10V output
   • 2 (-) ground

Using one of the above options, be sure and, if necessary, change the TAG (#159) Pre-heater output selection to the following values:

• Control X17 Control X16
• 2 1

After hardware connection preheater works when these conditions are true:

1. The pre-heater is switched on in case all following conditions are true:
   • (Toutdoor + Texhaust) / 2 < 0˚C (Pre-heater setpoint #46).
   • Toutdoor < -3˚C (Frost protection Pre-heater setpoint #39).
   • The supply fan is on (needed for cooling of the heater).
2. The pre-heater is switched off in case at least one of the following conditions is true:
   • (Toutdoor+ Texhaust) / 2 > 0°C (Pre-heater setpoint #46) +3°C (Pre-heater off temp difference #47)
   • Tzew>(Frost protection pre-heater setpoint (#39)+Pre-heater off temp hysteresis (#225)
   • The supply fan is off

By-pass

Passive Heating
Passive Heating can be used to heat a building with outdoor air when the room temperature is lower than the outside temperature and lower than the temp setpoint. For example, in the spring, after a cool night, a cooled down building may be heated by outdoor air, which has been heated by the sun throughout the day. Passive heating may also be referred to as ‚Free heating’, as no conventional energy consumption needed.

Heating is possible when all of the following conditions are met:

• The outdoor temperature ≥ the extract temperature (room temperature) + 5˚C (Free ventilation outside offset #118).
  Heating is not possible when one of the following conditions is met:

• The outdoor temperature ≤ the extract temperature (room temperature) + 5˚C (Free ventilation outside offset #118 -0.5˚C).
  Heating is activated when all of the following conditions are met:

• Heating is possible.

• The extract temperature (room temperature) ≤ +20˚C (Free ventilation heating setpoint #117).
  Heating is deactivated when one of the following conditions is met:

• Heating is not possible.

• The extract temperature (room temperature) ≥ +20˚C (Free ventilation heating setpoint #117 + 0.5˚C).

When heating is activated the bypass is fully (100%) opened. Then, based on the temperature reading, it closes smoothly if the temperature exceeds the set level.

Passive Cooling
Passive Cooling can be used to cool a building with outdoor air when the room temperature is higher than the outside temperature and higher than the temp setpoint. For example, in the summer, during a cool night, the a heated-up building may be cooled by outdoor air. Passive cooling may also be referred to as ‚Free cooling’, as no conventional energy consumption is needed, or ‚Night ventilation’ as this type of ventilation mostly happens at night.

• Cooling is possible when all of the following conditions are met:
  The outdoor temperature ≤ The extract temperature (room temperature) – 5˚C (Free ventilation outside offset #118).
  Cooling is not possible when one of the following conditions is met:

• The outdoor temperature ≥ The extract temperature (room temperature) – 5˚C (Free ventilation outside offset #118) +0.5˚C.
  Cooling is activated when all of the following conditions are met:

• Cooling is possible.

• The extract temperature (room temperature) ≥+20˚C (Free ventilation heating setpoint #117) + 4˚C (Free ventilation offset cool setpoint #132).
  Cooling is deactivated when one of the following conditions is met:

• Cooling is not possible.

• The extract temperature (room temperature) ≤ +20˚C (Free ventilation heating setpoint #117) + 4˚C (Free ventilation offset cool setpoint #132) -0.5˚C.

When cooling is activated the bypass is fully (100%) opened.
Then, based on the temperature reading, it closes smoothly if the temperature exceeds the set level.

• Emergency stop
  The emergency stop becomes active when all following conditions are true:
  The emergency stop is not blocked

• Tsupply < +5˚C (Emergency stop temperature #20)

NOTE:
The emergency stop can only be cleared by a power down. (power cut off).

Auto return to auto mode
Parameter Auto return to auto mode (#60) is normally disabled. If you enable this option (only by authorized service personnel), unit returns to auto mode automatically after set value.

NOTE:
Auto mode works only when you have a minimum one VMS sensor (CO2 or RH) paired with HRU.

Filters
The unit is delivered from the factory equipped with two filters: ISO Coarse 70% (G4) filter – optionally ISO ePM1 55% (F7) on the supply side, and ISO Coarse 70% (G4) filter, optionally ISO ePM1 55% (F7) on the exhaust side.
It is also possible to install an ISO Coarse 70% (G4) filter, optionally ISO ePM1 55% (F7) on the exhaust side and ISO Coarse 70% (G4) filter, optionally ISO ePM1 55% (F7) on the supply side as an accessory.

NOTE:
Please remember that additional filters increase pressure drop in all ventilation system

If unit shows alert about filter change it is probably time to change filters. Filters replacement is very easy and you can do it without any additional tools.

NOTE:

Reset the filter counter :

• HRQ-FlatAIR-BUT-LM04: Reset the dirty filter message by pressing and holding both the AWAY and AUTO buttons for at least 4 seconds.
• HRQ-FlatAIR-BUT-LM11: Reset the dirty filter message by pressing and holding both the AWAY and PARTY buttons for at least 4 seconds.
• Application (option): use the “Change filters” button.

Heat exchanger cleaning

Heat exchanger ought to be cleansed a minimum once a year. The amount of dust layered on the heat exchanger depends on: frequency of filters change and indoor and outdoor air quality. Heat exchanger can be washed with warm water with mild detergent (pH from 6 to 8).

To clean heat exchanger:

1. disconnect the control unit from the power supply,
2. open the four catches on the recuperator cover,
3. remove the cover,
4. loosen the screws securing the exchanger protections – left and right,
5. unscrew the drip tray mounting screw,
6. remove the exchanger by pulling the strap,
7. insert a clean or new exchanger,
8. tighten the drip tray mounting screw,
9. Tighten the exchanger with the safety devices and tighten the screws,
10. put on the cover and check its fit to the body,
11. fasten the fasteners,
12. connect the air handling unit back to the power supply.

Remove heat exchanger HRU-FlatAIR-150 / -200 / -225 /-250

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.

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. Connect the temperature sensor to connector X21 on the unit control board and change the TAG (#273) to 2
• 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:

• X28
• 1 L out 2 (RL1)
• 2 L (out 1(RL2)
• 3 N

The output to control the geothermal heat exchanger valve, can be configured using Geothermal Heat Exchanger Valve Output (#195) from 0 to1 and disable Frost protection by changing Frost sensor (#140) value to 0.

The automatics controls the valve based on the temperature at the outdoor (Temperature 4 outdoor). If the Temperature 4 outdoor is lower than the Geothermal Heat Exchanger Outdoor Temperature Below (#193) or higher than the Geothermal Heat Exchanger Outdoor Temperature Above (#194) the valve will be opened and the air going to the unit will be taken from the ground heat exchanger. If the temperature sensor (Temperature 4 outdoor) is broken or if the above condition is not met the valve will remain closed.

Values Geothermal Heat Exchanger Outdoor Temperature Below (#193) and Geothermal Heat Exchanger Outdoor Temperature Above (#194) are set in default mode for 5°C and 25°C. They can be edited from the service tool and the LCD Display controller. Functional check:

• Temperature 4 outdoor >5°C (#193) and <25°C (#194) valve position HRU-OUTDOOR
• Temperature 4 outdoor <5°C (#193) and >25°C (#194) valve position HRU-GHE

Connection of kitchen hood/fireplace
The cooker hood can be connected to the MVHR system via the X25 contact on the main board of the FlatAIR 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 post heater, post cooler, post cooler with heating option
The device has the option of connecting a water post heater, post cooler or a post cooler with the function of a heater. The post-heating/cooling function is designed to improve the comfort temperature in ventilation rooms. Through an internal algorithm, the heat recovery unit is responsible for controlling the actuator mounted on the three-way valve.

The post heater/cooler shall be mounted on the supply air duct after the unit at a distance of not less than 1 m. It is possible to mount an external air temperature sensor HRQ SENS 500, which should be mounted in the air duct after the post heater/cooler. The temperature sensor should be connected to the X23 connector. This allows us to monitor the actual air temperature after the post heater/cooler.

Heat recovery unit controls the valve based on the readings of Temperature 2 (extract air) inside the rooms, according to the formula:

• Post heating:
  Temperature 2 (extract air) < Room temperature heating setpoint(#117)

• Post cooling:
  Temperature 2 (extract air) > Room temperature heating setpoint (#117) + Room temperature offset
  cooling setpoint(#132)

• Post heating/cooling:
  Combination of the above formulas + detected heating/cooling season

The unit has an algorithm forcing the time interval between heating-cooling and cooling-heating modes.
The standard interval time setting is 60 min.

In order to prevent damage to the post heater, the supply fan remains switched on for 60 s after the secondary heating function has been completed.
To control the three-way valve, use

For the system to work properly, connect the valve with the electric actuator to the X28 connector in the following order:

X28

1. 1 L out 2 (RL1)
2. 2 L (out 1(RL2)
3. 3 N

Before installing the actuator with the three-way valve, take special care to adjust their starting position.

Example connection of three-way valve R3015-1-B1 (DN15, kvs-1.0) with Belimo TRY230 actuator:

• A – Heater/cooler output
• B – Heater/cooler bypass
• AB – Return to heating/ cooling system

The three-way valve should be manually set in a position that allows liquid flow only in the B –>AB direction (diagram above).
The next step is to set the actuator in the closed position. To do this, manually set the actuator in a position that the only possible movement of the actuator is to the left (in the direction of opening the A –> AB permeability).

Then make changes to the control plate according to the following manual:
(changes can be made from the HRQ-BUT-LCD display, or Alnor service program)

Heat recovery unit control

External unit control
In addition, it is possible to connect the system to an external control source (e. g. heat pump or chiller). An external control source sends a signal to the recuperator about the current state of heating/cooling.

For this purpose, in addition to connecting the actuator of the three-way valve, it is necessary to connect the signal cable to the potential-free output X25, which will inform the unit in which operating mode the external device is, eg. post heating/cooling is. The installer i salso obligated to define the output state.

To turn off post heating/cooling functionality set (#167) – 0.

PremAIR application

Available for download in
Google Play and App Store: PremAIR

 Reprocessing

This appliance bears the symbol of the barred waste bin. This indicates that, at the end of its useful life, it must not be disposed of as domestic waste, but must be taken to a collection center for waste electrical and electronic equipment, or returned to a retailer on purchase of a replacement.

It is the user’s responsibility to dispose of this appliance through the appropriate channels at the end of its useful life. Failure to do so may incur the penalties established by laws governing waste disposal. Proper differential collection, and the subsequent recycling, processing, and environmentally compatible disposal of waste equipment avoids unnecessary damage to the environment and possible related health risks, and also promotes recycling of the materials used in the appliance.

For further information on waste collection and disposal, contact your local waste disposal service, or the shop from which you purchased the appliance.
Manufacturers and importers fulfill their responsibilities for recycling, processing, and environmentally compatible disposal either directly or by participating in collective systems.

Troubleshooting

• Problem Reason Solution

• Unit status LED (Figure 21, Table 1) flashes 1x red and 1x orange Exhaust fan error Call service

• Unit status LED (Figure 21, Table 1) flashes 1x red and 2x orange Supply fan error Call service

• Unit status LED (Figure 21, Table 1) flashes 2x red and 1x orange

• Emergency temperature stop. Supply air temperature below +5˚C. Possible reasons:

•  Reset unit by switch plug off for 10sec and switch it on.

• wrong duct connection Check duct connection according to chapter 4.4

• temperature inside rooms below +15˚C Check temperature inside house.

• Unit status LED (Figure 21, Table 1) flashes 2x red and 2x orange Exhaust temperature sensor fault Call service

• Unit status LED (Figure 21, Table 1) flashes 2x red and 3x orange Inlet temperature sensor fault Call service

• Unit status LED (Figure 21, Table 1) flashes 2x red and 4x orange Supply air temperature sensor fault Call service

• Unit status LED (Figure 21, Table 1) flashes 2x red and 5x orange Exhaust temperature sensor fault Call service

• Unit status LED (Figure 21, Table 1) flashes 1x green and 1x red Dirty filters Replace filters and reset filters (see chapter 6.4)

• Unit status LED (Figure 21, Table 1) flashes 3x red and 3x orange Humidity sensor error Call service
  Unit status LED (Figure 21, Table 1) flashes 4x red and 1x orange Modbus error on extract Call service

• Unit status LED (Figure 21, Table 1) flashes 4x red and 2x orange Modbus error on supply air Call service

• Unit status LED (Figure 21, Table 1) flashes 4x red and 3x orange General Modbus error Call service

• Unit status LED (Figure 21, Table 1) flashes 5x red and 1x orange NTC T1 sensor error Call service

• Unit status LED (Figure 21, Table 1) flashes 5x red and 2x orange NTC T2 sensor error Call service

• Unit status LED (Figure 21, Table 1) flashes 6x red and 1x orange Connection error with the control panel Call service

• Unit status LED (Figure 21, Table 1) flashes 1x red and 3x orange Both fans failed Call service

• Supply fan switches off during temperatures below +1˚C. Extract fan works normally Defrost procedure is active. Normal operation mode which protects heat exchanger before freezing.

• Bad smell in supply air Intake valve is too close to exhaust valve. Change the position of in take or exhaust valve. Summer siphon dry. Fill summer siphon.

• Water drains from unit Wrong duct connection Check duct connection according to chapter 4.4 Condesate drain elastic pipe wrong connection Check siphon connection according to chapter 4.2 Wrong unit leveling Check unit leveling according to chapter 4.2

• Water “grougle” in unit Siphon is not connected Connect siphon according to chapter 4.2 Siphon is dry Fill water to siphon according to chapter 4.2

• Passive cooling is not enough Passive cooling does not mean air conditioning (active cooling). To increase passive cooling change speed fan speed to higher speed.

Energy label

Declaration of conformity

Alnor Systemy Wentylacji Sp. z o.o.,  Aleja Krakowska 10, 05-552 Wola Mrokowska,

• Tel.: + 48 22 737 40 00, fax.: + 48 22 737 40 04,
• E-mail : alnor@alnor.com.pl, www.alnor.com.pl.

EU DECLARATION OF CONFORMITY No 079/01/24

Warranty conditions – Heat Recovery Unit

1. The warranty is granted for a period of 24 months from the date of commissioning the device, however not longer than 27months from the date of sale.

2. During the warranty peiod, the Manufacturer is obliged to remove any defects and malfunctions of the device free of charge due to causes inherent in the product or caused by the Manufacturer.

3. The commissioning of the heat recovery unit requires installation by an authorized installer with confirmation of assembly on the warranty card or in the appropriate acceptance protocol of the heat recovery unit.

4. The warranty is valid under the condition of regular inspection of the device and ventilation system throughout the warranty period. The cycle is valid: 1 review for 6 months of system operation. In the event of failure to perform subsequent reviews of the heat recovery unit and ductwork by an authorized service technician, confirmed by an appropriate entry and a stamp on the warranty card, the guarantee automatically expires.

5. The warranty applies to the possible replacement of parts of the device, but it does not apply to the provision of services. The warranty is valid only in the case of electrical installation and connection are carried out by a qualified electrician, which is each time confirmed by an appropriate acceptance protocol and a stamp on the warranty card. The warranty becomes void if installation of the device was made by an unauthorized persons.

6. The warranty does not apply to heat recovery units installed in ventilation systems made only from flexible ducts or in systems in which the main ductwork is made of flexible ducts.

7. The warranty does not apply to heat recovery units installed in ventilation ductwork using uninsulated ducts. This does not apply to installations made of plastic ventilation ducts placed in concrete floor screeds.

8. The manufacturer is not liable for faulty operation of the installation or the heat recovery unit caused by a faulty installation of the ventilation system. In particular, if the ventilation system does not have appropriate design documentation or as-built documentation containing all the parameters of the ventilation system operation, such as air flows, compressor, installation performance, confirmed by appropriate measurement protocols and the ventilation system acceptance protocol. Lack of technical documentation of the ventilation system will void the warranty.

9. The warranty covers the goods for which the Com-plainant presented a valid warranty card and proof of purchase.

10. Any irregularities in the device operation should be repor-ted to the seller/serviceman.

11. The warranty does not cover mechanical damage to the equipment and defects caused by them, damage and defects resulting from:

    • Misuse, abuse or improper maintenance, failure to follow operating instructions about assembly, storage and transportation
    • Unauthorized repairs and alterations
    • Force majeure actions, e.g. lightning strikes, floods, electric network overvoltage, extreme weather conditions, damages resulting from the activities of animals or insects
    • Damage caused by improper protection of installation while carrying out other construction works, repair or assembly, including damage involving contamination of the HRV s interior
    • Damage caused by improper workmanship or connecting the electricity network
    • Damage resulting from the contamination of the device, damages resulting from the operation of the device with extremely contaminated filters or as a result of the device’s operation without filters and as a result of highly contaminated ventilation ductwork.
    • Damage resulting from the installation of the device in a ventilation system made incorrectly or not having the appropriate technical documentation confirmed by appropriate measurement protocols and the acceptance protocol of the installation or in the appropriate HRV receipt report.

12. The warranty does not cover the travel costs of the service technician appointed by the manufacturer if the unit cannot be disassembled.

13. The obligatory paid service inspection includes the following activities:

    • Replacement / cleaning of HRV filters
    • Control of the HRV operation,
    • Control of the condition of ventilation ducts,
    • Cleaning the exhaust and supply grille,
    • System operation control.

14. Complaints about any missing items in the delivered goods or hidden defects must be reported in writing. The user should effectively report any equipment malfunction or disclosure of its defect in an efficient manner in order to avoid serious damage. The costs of removing damages caused as a result of further operation of the device which is not fully functional is the responsibility of the User.

15. Warranty repair does not include the activities provided in the user’s manual for which the user is obliged to perform on their own and at their own expense, i.e. to start the equipment, check the operation and maintenance
    (filter replacement, cleaning of diffusers).

16. The warranty does not cover other materials used for possible covering of the ductwork by the buyer, in particular if in the process of installation the free access to regulatory devices such as electrical components, dampers or other regulation elements of the installation was not guaranteed.

17. The warranty becomes void if any modification, or alteration has been made to the product by the user and when using spare parts not recommended by the manufacturer.

18. All disputes arising in relation to the granted warranty shall be settled by the court competent for the Seller.

19. The proof of purchase and the user’s manual should be kept for the warranty period, i.e. for 24 months, and without damage.

20. The warranty card damaged or with visible traces of mo-difications is invalid. The warranty without the seal of the company installing the device is invalid.

warranty card

Warranty card – maintenance schedule

__

No.

| ****

Date of notification

| ****

Date

| ****

of

| ****

service

| ****

Maintenance service

| __

Signature & stamp of serviceman

---|---|---|---|---|---|---
__ Unit model: ………………………..| |
Serial number: ………………………..|
Sale date: ………………………..| ……………………………………………………………
| Signature and stamp of the Distributor
__ Start up date: ……………………….| __ ……………………………………………………………
| Signature and stamp of the Installer
6 months| | | Please, circle the correct answer: YES     NO

Cleaning HRV filters YES NO Cleaning extract louvers and inlet diffusers YES NO Ventilation ductwork checkup  YES NO Additional regulation

Other …………………………………………………………………

………………………………………………………………………….

………………………………………………………………………….

|
12 months| | | Please, circle the correct answer:
Cleaning HRV filters   YES NO Cleaning extract louvers and inlet diffusers YES NO Ventilation ductwork checkup  YES  NO
Additional regulation  YES NO Other ………………………………………………………………………………………………………………………………………………………………………………………………………………………..|
18 months| | | __ Please, circle the correct answer:
Cleaning HRV filters  YES NO Cleaning extract louvers and inlet diffusers YES NO Ventilation ductwork checkup   YES  NO
Additional regulation     YES NO Other ………………………………………………………………………………………………………………………………………………………………………………………………………………………..|
24 months| | | Please, circle the correct answer:
Cleaning HRV filters    YES NO Cleaning extract louvers and inlet diffusers YES NO Ventilation ductwork checkup YES  NO
Additional regulation YES NO Other ………………………………………………………………………………………………………………………………………………………………………………………………………………………..|

ALNOR® ventilation systems
is a legally protected trademark and technological patent. All rights to change or amend are reserved

References

• Cyber_Folks Lepsza szybkość stron i wsparcie bez porównania
• TSI - Alnor

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