Indoor air quality sensor

Indoor air quality sensor
Indoor air quality sensor.
Options and Accessories, Installation manual
Ref.: N-40175 1107
Index
Index
1
Indoor air quality sensor.......................................................................................................... 1
1.1
1.2
1.3
1.4
1.5
1.6
1.6.1
1.6.2
1.6.3
1.7
1.8
General Information...............................................................................................................
General measurements..........................................................................................................
Technical specifications.........................................................................................................
Assembly................................................................................................................................
Operations..............................................................................................................................
Installation..............................................................................................................................
Buttons and LED....................................................................................................................
Configuration..........................................................................................................................
Accessories and sensors.......................................................................................................
Wiring diagram.......................................................................................................................
EC Declaration of Conformity.................................................................................................
2
2
2
3
3
4
5
5
6
7
9
i
Index
ii
1
Indoor air quality sensor
1
1.1
Indoor air quality sensor
General Information
1.1 General Information
The sensor measures the degree of pollution due to different reasons such as the level of room occu‐
pancy, tobacco, kitchen smoke, carbon monoxide, etc. When the pre-set limits are exceeded, the control
acts on the economiser, adjusting the outside air damper.
This option requires the economiser for it to work properly.
1.2 General measurements
Measurements in mm
1.3 Technical specifications
This accessory includes the following components:
•
•
•
2
Air quality sensor.
Signal conversion board from 230 V AC to 5 V DC.
Connection cable for sensor fitting inside machines.
Indoor air quality sensor
Assembly
1
1.4
1.4 Assembly
Sensor installed on the return side inside the machine
A. Indoor air quality sensor.
B.
Rain protection assembly and economiser (ex‐
isting).
Sensor installed in room
The place where the indoor air quality sensor is to be
installed in the room -A- must be representative of its
air quality level.
It must be installed on a wall free of obstacles at a
distance of 1.5 to 3 m from the floor.
Sensors should not be installed behind curtains or
shelving or in gaps or areas where people are per‐
manently present (in this case, the minimum distance
should be 1 to 2 metres).
X = 1.5 ÷ 3 m.
1.5 Operations
The air quality sensor has a VOC (volatile organic
compounds) sensor that compares their concentra‐
tions in the air with the setting selected on the sensor.
Where the value is higher than the setting, the sensor
triggers output Y1 using a relay.
The 230 V AC output signal between Y1 and N is
connected to conversion board of 230 V AC to 5 V
DC. This board is fitted alongside the economiser
control board. The 5V DC signal cable must be con‐
nected on connecting J18 on the economiser board.
Where the thermostat setting temperature of the room
is met and there is an air quality request signal, the
damper is opened to the programmed renewal mini‐
mum and the inside fan starts up. The damper then
opens further, bearing in mind the maximum (30 °C)
and minimum (12 °C) supply temperatures.
In the following cases:
• Disappearance of the air quality request signal,
• the thermostat makes a cold or heat request
The damper returns to the renewal minimum. Where
there is no request from the thermostat and the inside
3
Indoor air quality sensor
Installation
1
1.6
fan is in automatic mode, the fan will stop and the
dampers will close.
A.
Connection terminals.
B.
Air quality level selection.
C.
VOC sensor.
Three air quality levels can be selected on the sensor
according to the bridge positions:
0: Normal, default position.
-:
Acceptable.
+:
Very good.
1.6 Installation
•
•
NOTE
The electrical connection for the sensor will be different depending on the place where it is installed.
Bear in mind the current regulations in the country where the equipment is to be installed.
Disconnect the power supply to the unit using the main switch -Q3- (See Installation Manual).
Install the air quality sensor on the return side of the economiser separator panel or inside the room.
Install the 230 V AC to 5 V DC signal conversion board alongside the economiser board. Previously
remove the plastic cover and secure the board using the plastic separators on the plate support.
Connect the 5 V DC signal cable on connecting J18 on the economiser board.
Sensor installed on the return side inside the machine:
Connect the black and blue wires (386 and 387) of the economiser cable (inside the cable ducting on
the electrical box side) to X1 terminals L and N, respectively. Then connect air quality sensor terminals
L and N.
Run the brown (Y1) and blue (N) wires from the sensor to the signal conversion board.
Sensor installed in room:
Install a 4 x 1 mm2 cable (black, blue, brown and yellow-green) from the electrical box on the unit to the
location where the sensor is to be installed in the room.
Connect the black (L), blue (N), brown (Y1) and yellow-green (earth) wires to the X1 connector terminals
and to the sensor. Then connect wires 387 (N) and 386 (Y1) to the side of the electrical box (connector
X1) and to the side of the signal conversion board.
Checking the correct working order of the sensor:
Set the thermostat so that the room temperature is met.
Bridge terminals L and Y1 or make the sensor detect smoke to check that the output relay is triggered.
The damper should open very slowly.
CAUTION
Loose connection terminals produce overheating of cables and terminals. The unit is working incorrectly
and there is a risk of fire.
Check that the cables are firmly secured to their connection terminals.
4
Indoor air quality sensor
Installation
1
1.6
CAUTION
Do not turn on the general switch on the unit or start the unit until all installation work has been completed.
1.6.1 Buttons and LED
Buttons
There is a button on the main electronics board called the test button that has several functions depending
on the way it is pressed:
- As a LonWorks service pin: whenever it is pressed, it sends the Neuron ID via the LonWorks network.
- Shortens certain times and resets any fault detected if pressed until the green LED lights up.
- Identifies the optional accessories and sensors connected to the board if kept pressed down until the
red LED lights up.
LED
There are three LED signalling diodes:
•
•
•
The green LED indicates whether the equipment is working properly or if there are incidents. If the
equipment is working properly, this LED will flash at a frequency of 1.43 Hz. (0.70 sec).
The red LED indicates faults. If there are not faults, the LED will remain switched off. It also lights up
when accessory configuration is being scanned.
The yellow LED performs the functions of the LonWorks service LED and also indicates that a com‐
pressor time is running when it flashes.
Where the red and green LED remain lit, the configuration must be reloaded on the board. It can only
pass through communications in the event of decommissioning.
There is a green LED on all accessories that flashes when communications are sent to them. It will
therefore indicate that it has been correctly identified. If the LED remains on, it indicates that the acces‐
sory is powered but either it has not been correctly identified or it is not receiving the communications.
There is a yellow LED on the economiser that indicates that the outside air is favourable when it is lit and
a button that, together with the potentiometer, stores the renewal minimum position (see the Economiser
Installation Manual).
There is also a yellow LED on the hot water coil that indicates if the water temperature is favourable
(LED remains lit) or if the coil is performing a defrost function (LED flashing).
1.6.2 Configuration
Every time the electronic board is powered with 24 V AC the system configuration is checked as follows:
1 Micro-switch reading.
2 Communications transceiver identification.
3 Thermostat communication check.
4 Check and enabling of all located accessories.
The first two tasks are not carried out at any other time. The third is carried out once a minute when
communication cannot be established. The fourth task is also carried out on resetting faults and when
accessories are located.
The micro-switches are consulted every time the electronic board is powered with 24 VAC. The board
will act according to their positions.
NOTE
Where SW1 and SW2 are OFF, configuration is carried out remotely via the communications system.
Micro-switch configuration:
5
1
1.6
Indoor air quality sensor
Installation
Number
1/2
4
5
6
7
8
Status
Meaning
OFF/OFF
Pay no attention to the SW, they are programmed via commu‐
nications.
ON/OFF
Defrosting time 0 sec.
OFF/ON
Defrosting time 60 sec.
ON/ON
Defrosting time 90 sec.
ON
Crossed coils.
OFF
Independent coils.
ON
Compressor delay 2 sec.
OFF
Compressor delay 5 sec.
ON
Cold only selection.
OFF
Heat pump selection.
ON
4-way valve active in heat.
OFF
4-way valve active in cold.
ON
Thermostat with signal B.
OFF
Thermostat with signal O.
ON
Fan enabled during defrost.
OFF
Fan disabled during defrost.
Transceiver ID
Every time the electronic board is powered with 24 V, the transceiver installed is recognised and the
communications parameters adapted. If the identifier is unknown, an incident will be indicated.
When an SMX transceiver is used, the green LED on the board will flash at a frequency of 0.8 Hz (1.25
sec) to indicate that it has recognised it.
1.6.3 Accessories and sensors
Accessories are installed for the extended operating of the equipment. These accessories can be factory
or site-fitted.
Disconnect the power supply to the unit using the main switch -Q3- (See Installation Manual).
Then install the accessory and all necessary parts and re-connect the power supply.
Press the test button for more than three seconds to search for and configure the accessories installed
until the red LED lights up. When the search and configuration process starts, the red LED on the board
will light up and will remain on until the operation is completed. Once switched off, the board will manage
the located accessories.
The optional sensors to be connected to the board are also chosen during the search. If any of the optional
sensors configured ceases to generate correct values, an incident is generated.
In the case of the supply sensor, which may be fitted to connector J6 on the second compressor board,
to connector J6 on the economiser board or to connector J6 on the hot water coil board, an attempt will
first be made to identify it on the second compressor and, where it is not located, on the economiser or
on the hot water coil.
6
Indoor air quality sensor
Wiring diagram
1
1.7
1.7 Wiring diagram
7
1
1.7
Indoor air quality sensor
Wiring diagram
Optional
F11
1.
KM11
•
•
•
Reg. 1 A (090, 120, 150).
Reg. 1.4 A (180, 240, 300).
Reg. 1.4 A (180, 240, 300).
A1 to X2-7 (Cable 583)
A2 to X2-B
M11
Exhaust fan
X2-R
24 VAC Phase-R switching
X2-7
To A1 from KM11
2.
Accessories
3.
Accessories
Air quality sensor, optional, fitted on return (inside machine)
4.
L
Black
N
Blue
Y1
Brown
Air quality sensor, optional, fitted on ambient (machine exterior)
5.
L
Black
N
Blue
Y1
Brown
Yellow-Green
6.
Air quality board (green)
Enthalpy sensor C7400A return, optional
7.
+
Red
S
White
Enthalpy sensor C7400A outside, optional
8.
+
Red
S
White
B15
Return sensor (black)
B16
Discharge sensor, optional depending on model (yellow)
B17
Inside sensor (white)
Damper
M10
X1
0-10 V
Grey
C
Black
R
Red
Cables to be installed on site (not supplied)
Data and measurements subject to changes without prior notice.
8
Indoor air quality sensor
EC Declaration of Conformity
1
1.8
1.8 EC Declaration of Conformity
9
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