40260_EN

40260_EN
Enthalpy sensors (Optional)
Options and Accessories, Installation manual
Ref.: N-40260_EN 0508
Index
Index
1
Enthalpy sensors (Optional).....................................................................................................1
1.1
1.2
1.3
1.4
1.5
1.6
1.7
General Information.................................................................................................................2
General measurements............................................................................................................2
Technical specifications...........................................................................................................3
Assembly..................................................................................................................................3
Operations................................................................................................................................3
Installation................................................................................................................................4
Wiring diagram.........................................................................................................................5
i
1
Enthalpy sensors (Optional)
1
1.1
Enthalpy sensors (Optional)
General Information
1.1 General Information
Allows for the fitting of enthalpy sensors in installations requiring enthalpy control of the return and outside
air through the economiser.
1.2 General measurements
Enthalpy sensor
Measurements in mm.
Plate support
Measurements in mm.
Economiser control board
2
Enthalpy sensors (Optional)
Technical specifications
1
1.3
1.3 Technical specifications
This accessory includes the following components:
1
2
3
4
Enthalpy sensors (C7400A).
Plate supports for the sensors.
Connection cables for the sensors.
Securing flanges, cables and screws.
1.4 Assembly
The enthalpy sensors are fitted to the separator panel on the side of the economiser.
Fit one enthalpy sensor in the holes made on the return side and another on the outside using the screws
supplied.
Pass the red and white wires from the economiser control board to the sensors and connect them ac‐
cording to the wiring diagram.
Fit the ENTALP bridge to control board A4.
Disconnect the outside sensor B17 and keep the return sensor B15 connected.
The enthalpy sensors must be located so that their terminals + (red wire) and S (white wire) are on the
right and the two small sensor deflectors are at the top.
1.5 Operations
Favourable conditions in enthalpy mode are when the outside enthalpy is at least 5% below the return
enthalpy and the outside temperature is below 20 °C.
3
1
1.6
Enthalpy sensors (Optional)
Installation
1.6 Installation
NOTE
Bear in mind the current regulations in the country where the equipment is to be installed. On all accounts,
the national regulations established must be respected.
1 Disconnect the power supply to the air conditioning unit.
2 Remove the access panel to the return air filters
and the panels on the outside and return side.
3 Fit the enthalpy sensors on the separator panel and connect the cables supplied according to the
wiring diagram.
A.
Return temperature sensor
B.
Outside temperature sensor
C.
Enthalpy sensor (OA) optional
D.
Enthalpy sensor (RA) optional
E.
Support
1.
Holes for flanges
2.
Cable ducting hole
3.
Bushing
4 Disconnect the outside sensor B17 (connector J3)
and keep the return sensor B15 (connector J13)
connected on board A4 (economiser).
5 Fit the ENTALP bridge (S2) on control board A4 to
select operating with enthalpy sensors.
6 Connect the electricity supply to the air conditioning unit.
7 Check that the green LED on board A4 remains lit and press the test button on the YKN2 Open board
(A1) for more than three seconds to search for and configure accessories. When the search and
configuration process starts, the red LED on the board will light up and will remain on until the oper‐
ation is completed. Once switched off, check that the green LED (V1) on board A4 is flashing to
indicate that the accessory has been configured.
8 The outside temperature must be below 20 °C to check correct electrical operations. Otherwise, cool
the outside sensor connected to the YKN2 Open board (A1). Make a cold request from the thermostat
or from the YKtool. Then cool the enthalpy sensor on the outside. The yellow LED (V2) must light up
and the outside damper must open. Finally, cool the enthalpy sensor on the return side. The yellow
LED (V2) must switch off and the return damper must open. Incident 4, 1, 5 is indicated if the enthalpy
sensors are faulty.
9 Check that the cables are firmly secured to their connection terminals.
•
•
4
CAUTION
Loose connection terminals produce overheating of cables and terminals. The unit is working incor‐
rectly and there is a risk of fire.
Do not turn on the general switch on the unit or start the unit until all installation work has been
completed.
Enthalpy sensors (Optional)
Wiring diagram
1
1.7
1.7 Wiring diagram
5
1
1.7
Enthalpy sensors (Optional)
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.
6
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