Xpelair Natural Air Series User manual

Natural Air
Natural Air PH
Natural Air Plus
180 and 350 Models
Ventilation Unit With Heat Recovery
User manual
IMPORTANT:
In this user manual, especially important notes are marked as
WARNING! or NO E!

User Manual
Contents
Section 1
–
Description of t e device
3
Section 4
–
Fault finding
13
1.1 Purpose
3
Section 5
–
Maintenance
14
1.2 Design
3
5.1 Filter maintenance
14
1.3 Operating principle
3
5.2
Cleaning the heat exchanger
15
1.4 CE mark
4
5.
3
Maintaining
condensate discharge line
16
Section 2
–
Control
4
Annex
17
2.1 Display
and control panel on the unit
4
Program switching times (weekly sc
hedule)
17
2.2 Operating modes
5
Filter maintenance
18
2
.3 Favourite User adjustments
5
Section 6
–
Spare parts and Accessories
19
2.4 User menu
6
Section
7
–
Customer service and guarantee
19
2.
5
ips
for saving energy
11
Section 8
–
Environment and disposal
20
Section 3
–
Safety
functions
12
3.1
S
af
e use with open flue devices
12
3.2 Frost protection of the unit
12
3.
3
Frost protection of the Property
12
3.
4
Smo
ke detector (safety cut
-
out)
12
WARNING:
T e unit contains rotating fans.
Do not put ands or fingers or any ot er objects into t e unit or ducting.
WARNING:
THIS APPLIANCE CAN BE USED BY CHILDREN AGED FROM 3 YEARS AND ABOVE AND
PERSONS WITH REDUCED PHYSICAL, SENSORY OR MENTAL CAPABILITIES, OR LACK
OF EXPERIENCE AND NOWLEDGE IF THEY HAVE BEEN GIVEN SUPERVISION OR
INSTRUCTION CONCERNING USE OF THE APPLIANCE IN A SAFE WAY AND
UNDERSTAND THE HAZARDS INVOLVED. CHILDREN MUST NOT PLAY WITH THE
APPLICANCE. CLEANING AND MAINTENANCE OF THE APPLIANCE SHALL NOT BE
MADE BY CHILDREN.
2

Section 1 – Description of t e device
1.1 Purpose
he unit is designed for controlled supply and exhaust ventilation of frost-free rooms within a building.
Model 180 Series is used for domestic properties with 1 kitchen and up to 3 additional wet rooms (K + 3).
Model 350 Series is used for domestic properties with 1 kitchen and up to 7 additional wet rooms (K + 7).
(“Wet rooms” include bathrooms, toilets, ensuites, etc).
he air flows through air ducts.
Connecting exhaust hoods to the ventilation system is not permitted. he unit is not to be used as a
dehumidifier.
1.2 Design
Fig.
1.1a
Structure of the
Natural Air 180
Fig.
1.1
b Structure of the Natural Air
350
1 Back plate and sides
2 Control panel and display
3 Inspection door
4 Front cover
5 Connection nozzle, extract air
6 Connection nozzle, supply air
7 Connection nozzle, exhaust air
8 Connection nozzle, fresh air
9 Defrost Heater supply output (PH variants only) *
10 Boost Heater supply output (PH variants only) *
* External Heater boxes (not supplied) are available
as an accessory. (See User Manual for details).
1.3 Operating principle
he unit is fitted with two fans using energy-saving “EC” technology which carries out a controlled air
exchange in applicable buildings.
Used air is drawn in to the unit as Extracted air from the rooms with the highest air humidity and odour (e.g.
bathroom and kitchen) and is transferred to the outside as Exhaust air via a system of air ducts.
At the same time, a second duct system takes in Fresh air from outside the building and transfers it into living
rooms and bedrooms as Supply air.
Both air flows are completely separate and are passed through a heat exchanger which recovers waste heat
from the extracted air to warm up the supply air. his ensures that the majority of heat is kept in the building.
An internal bypass can be opened so that fresh air is supplied to the intake rooms without being warmed up
by the heat exchanger. Heat recovery is disabled in this case.
Halls and corridors normally act as transfer areas in which the air from the supply areas flows into the extract
areas. Undercut doors and air transfer grilles are used so that the air flow between rooms is not restricted.
WARNING:
Ensure free access to t e unit and to t e switc disconnecting it from t e power supply at all times.
3

Section 1 – Description of t e device
NOTE!
All air inlet and outlet openings and air transfer openings must not be obstructed, covered or closed
so t at an un indered airflow is ensured. Settings made by t e qualified tec nician must not be
c anged.
WARNING:
Alterations made to t e unit or system, as well as structural c anges to t e building, can affect
safety. Always consult a qualified tec nician.
1.4 CE mark
he ventilation unit is designed and built in accordance with the relevant European standards and directives in
order to meet the health and safety requirements. his is documented by the EC Declaration of Conformity
and by the CE mark attached to the unit. For installation and use, any additional, applicable national laws,
regulations and guidelines must be observed.
Section 2 – Control
2 Control
he unit is controlled using the display panel on the front of the unit.
Additional optional external sensors can be connected depending on the requirements of the site installation.
Natural Air 180/350 and Natural Air 180/350 H : Optional, Internally mounted Sensor board kit required –
art N° 93324AA. (Natural Air 180/350 lus : Sensor board is fitted as standard).
WARNING:
T e unit must not be used if it is damaged. Disconnect t e unit from t e power supply and notify
your installer.
2.1 Display and control panel on t e unit
he unit uses a 3 button control panel with a back lit
text display giving menu-driven operations.
Navigate through the menu structure within one level
using the and buttons. Select the required menu
item using the OK button. Hold the button pressed
for 1 sec. in order to switch to the previous level.
Change the selected settings using the and buttons
and save the set value using the OK button. Hold the
button pressed for 1 sec. in order to exit the menu
item without saving changes.
1 LCD display
2
button: back / reduce
button for 1 sec: Level up
3
OK button: select / save / level down
4
button: next / increase
Fig. 2.1 Display and Control panel
4

Section 2 – Control
2.1.1 Standard Display
he standard display shows information on the current operating status of the ventilation unit.
Fig. 2.2 Standard display
1
Bypass feature is On
(No heat recovery)
4
Operating status and ime
7
Program imers are On
5
Middle button: OK (Enter)
8
Right hand button: Menu right
2
Holiday Mode or Night
imer is On
6
Function for safe use with open
flue fuel burners
3
Left hand button: Menu Left
2.2 Operating modes
he unit offers 3 different fan speeds. he following operating modes are available:
Operating mode
Application
OFF
he ventilation unit should be in operation continually. (Including when occupants are
absent for longer times). Off is not normally used.
AU OMA IC Automatic Speed change by internal humidity sensor and from external sensors (if fitted)
SPEED 1 Normal ventilation runs the system at minimum speed to correctly ventilate the property.
SPEED 2 Boost ventilation runs at a higher rate.
SPEED 3
Boost (Purge) ventilation runs for a user adjustable time interval: for rapid ventilation
(e.g. removal of high humidity or stale air etc).
able 2.3 Operating modes
he operating mode is set with the display and control panel of the ventilation unit on standard display using
the and buttons.
2.2.1 Automatic operation
he unit is designed to operate in Automatic mode and will be set to this when the unit is powered up.
In automatic mode, the volume flow rate is set depending on the humidity in the exhaust air and (if fitted) the
signals from any external sensors.
When more ventilation is required, the unit speed changes from Speed 1 to Speed 2 for as long as necessary.
When less ventilation is required, the unit returns to Speed 1.
2.2.2 Restart after power failure
After a power failure, the ventilation unit starts up in the mode it was set to before the power failure (usually
Automatic mode).
2.3 Favourite User adjustments
he Favourites menu is used to make adjustments to the more commonly used features :
Set Speed 3 (Boost) timer, Stop Bypass timer, Program timers, Night timer and Holiday mode.
5

Section 2 – Control
Access: Press the OK button and keep pressed for 5 sec.
Fig. 2.4 Favourite User adjustments
NOTE!
T e Nig t Timer can be adjusted 0 our to 12 ours. Holiday mode can be adjusted 0 day to 30 days.
W en set, t e unit will run at Speed 1 at all times. (“H” will show in the Display window)
NOTE!
Press t e button for 1 second to return t e display to normal.
(If no settings are made for 180 se onds, the display returns to the Standard display)
2.4 User menu
he user menu is used to program the weekly timer schedule, to set parameters and to view information
about the status and operation of the ventilation unit.
Access: Press and OK buttons simultaneously and keep pressed for 5 sec.
Fig. 2.5 User menu
NOTE!
Press t e button for 1 second to return t e display to normal.
(If no settings are made for 180 se onds, the display returns to the Standard display)
6

Section 2 – Control
2.4.1 Set t e Timers and Clock : Use the and keys to select, then press OK
Fig. 2.6 User menu : Set the imers and Clock
Option : “Set Program Timers mode” : Select t en press OK
Set the mode : Press OK then or keys to select “ imers Off” or “ imers On”.
Press OK to select the option required.
Press key for more than 1 second to move back up the menu.
Option : “Adjust Program Timers” : Select t en press OK
Use the or keys to select the Day or Set of days in which a timer function is required.
For each Day or Days use the and buttons and OK to set the switching time and the operating mode.
• he timer uses a 24 hour clock display.
• he operating modes that can be chosen are :
Automatic ( his will return the unit to its normal Automatic mode)
Speed 1 (Use this speed for normal continuous ventilation)
Speed 2 (Use this speed to clear higher levels of humidity, such as from using a shower)
Speed 3 (Use this to provide a short time purge of the building)
Off (Use this to switch the ventilation Off : Under normal circumstances Off should not be used)
None (Use this if no change is required for a time slot)
Press key for more t an 1 second to move back up t e menu.
NOTE!
As a record, note t e programmed switc ing times in t e sc edule table included in t e annex.
Option : “Set t e Clock” : Select t en press OK
On the first line of the Display use the or and OK buttons to select the Day the Mont and the Year.
On the second line use the or and OK buttons to select the Hour the Minutes and the Seconds.
Press key for more t an 1 second to move back up t e menu.
7

Section 2 – Control
2.4.2 Adjust User Settings : Use the and keys to select, then press OK
Fig. 2.7 User Menu : Adjust User Settings
Option : “Filter C ange Time” : Select t en press OK
Use this to adjust how long the fans run before the filters need to be changed.
Press OK to show “Set Filter time”. (Pre-set value is “6 months”). Use the OK and or buttons to select a
new filter time. (Adjustable 2 to 12 months).
Press OK to select the option required.
At the end of the Filter time the Display will show
• “Replace Filters” and the unit will continue to run as normal.
• Press “OK” to show “Filters replaced?”. Use the OK and or buttons to select “Yes” or “No”
“Yes” removes the Filter message and restarts the Filter time. he Display returns to normal.
“No” returns to the “Replace Filters” Display.
NOTE!
T e filter interval is not reset t roug power failures or w en t e unit is switc ed off.
Option : “Setup Summer Bypass” : Select t en press OK
he heat recovery feature is automatically turned off in the summer months by the opening of a “summer
bypass” shutter inside the unit. When the summer bypass is open, the cooler outside air is supplied directly
into the property without being heated up by the extracted warm air.
Press OK to show “Bypass Enable”. Press OK and or buttons to Select “On” or “Off” – Default is On.
Use or and OK buttons to Change and Select :
• he “Bypass Start” Month, when the Bypass feature will begin – Default is April (from 1st of the month).
• he “Bypass Stop” Month, when the Bypass feature will end – Default is October (to end of the month).
• he “Bypass Temp.” is the Room temperature above which the Bypass will operate – Default is 21°C.
During the set months period, the Bypass will open (“B” shows) when the following exists :
• he temperature Inside the property is 1°C above the Bypass emp and
• he temperature Outside the property is 1°C below the Bypass emp
8

Section 2 – Control
Option : “Menu Backlig t Timeout” : Select t en press OK
Use this to adjust how long the Display backlight remains On when no buttons have been pressed.
Press OK to show “Timeout Time”. (Pre-set value is Never. i.e. the backlight is always On).
Use the OK and or buttons to select a new Backlight imeout time. (Adjustment is 15 secs to 10 mins).
Press OK to select the option required.
2.4.3 User Information : Use the and keys to select, then press OK
Using this menu, you can display a wide range of information about the operation and status of the unit.
Settings cannot be adjusted in t is menu.
Fig. 2.8 : User Menu : Information
9

Section 2 – Control
NOTE!
Press t e button for 1 second to move back up t e Menu.
(If no settings are made for 180 se onds, the display returns to the Standard display)
Option : “Current Unit Status” :
Displays the current operating mode, the status of the bypass flap, the status of the function for safe use with
fire safety function (see Section 3.1), the weekly timer, the filter change time, the operating hours and the
current time.
Option : “Temperature Sensors” :
Displays the temperatures of the Supply air, Exhaust air, Fresh air, Extract air, and (if fitted) the Boost Duct air.
Option : “Internal Humidity” :
Displays the current humidity level (% RH) measured by the internal humidity sensor.
Option : “Air Flow Rate Settings” :
Displays the set Supply and Extract air flow rates at Speed 1, 2, and 3.
Option : “Current Motor Speeds” :
Displays the current speeds (in RPM) of the supply-air ventilator and of the extract-air ventilator.
Option : “External Humidity Sensors” :
When an externally wired humidistat is fitted, its current humidity level (% RH) can be displayed. (Up to 3
sensors can be remotely wired on the 180 range, and up to 7 on the 350 range).
Option : “Ot er External Sensors” :
When fitted, the current level of other external sensors can be displayed : CO2 sensor (ppm), AQS Sensor 1
(ppm), AQS Sensor 2 (ppm), Smoke Alarm status, Volt Free Input 1 (Off or On), Volt Free Input 2 (Off or On).
Option : “Flue Detection Sensors” :
When fitted, shows the status of the two Flue detection inputs.
(Note when these connections are open the status is On, when closed the status is Off).
Option : “External Heaters” :
Displays the status of the Pre-heater and Boost heaters, their trigger temperature values and which duct
temperature is used as the sensor.
(Note : he display will show the correct status even if the heaters are not fitted).
Option : “Error Messages” :
Displays any current fault message as well as the last twenty fault messages, each with date, and operating
mode at the time when the fault occurred.
10