Energy recovery system for ROOFTOP ACTIVA 045/090 Options and accessories, Installation manual

Energy recovery system for ROOFTOP ACTIVA 045/090 Options and accessories, Installation manual
Energy recovery system for
ROOFTOP ACTIVA 045/090
Options and accessories, Installation manual
Ref.: N-40337_EN 0910
Index
Index
1
Energy recovery system for Roof Top ACTIVA 045/090..........................................................1
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.7.1
1.8
1.9
General Description.................................................................................................................2
General dimensions.................................................................................................................3
Operation.................................................................................................................................4
Assembly..................................................................................................................................4
Installation................................................................................................................................5
Electrical connections..............................................................................................................7
Maintenance.............................................................................................................................7
Enthalpy wheel.........................................................................................................................8
Electrical specifications............................................................................................................8
Wiring diagram.........................................................................................................................9
i
1
Energy recovery system for Roof Top AC‐
TIVA 045/090
1
1.1
Energy recovery system for Roof Top ACTIVA 045/090
General Description
1.1 General Description
There are four models of energy recovery system, depending on the size of the Rooftop unit and the
renewal air flow required:
Energy recovery system model
ROOFTOP Model
Renewal air flow
[m3/h]
045 / 060 Q3000
045 / 060
3000
045 / 060 Q6000
045 / 060
6000
075 / 090 Q4500
075 / 090
4500
075 / 090 Q9000
075 / 090
9000
The energy recovery system is connected directly to the side of the Rooftop Activa units and always
includes the Economiser and Indoor air quality sensor options.
NOTE
Only the vertical air duct can be connected, at the bottom of the Rooftop unit
Features:
• Rotating sectorised enthalpy wheel recovery system,
• centrifugal fan, belt and pulley transmission on both the air inlet and outlet side,
• Rainhood with drip filters on the air inlet,
• barometric damper on the air outlet,
• G4 air filters as standard on both sides of the enthalpy wheel. F6 and F7 optional,
• height-adjustable support legs,
• all cabinet panels are fitted with heat insulation on the inside.
The enthalpy wheel provides substantial savings by reducing the demand for energy. It is ideal for areas
with high or low temperatures and areas with a high level of humidity. Also for areas with a very low level
of humidity, in buildings with a humidifying system, as the humidity is recovered from the extraction air
and re-introduced into the building.
Air leakage and bleed sector
Many rotating recovery systems are fitted with a bleed sector when this is often not necessary. The bleed
sector minimises leaks between the extraction air flow to that of the intake air flow by diverting a portion
of the latter to the extraction flow through the separator between the two.
This is only necessary in cases of industrial applications where the exhaust air carries contaminants. As
a result, the air volume to be moved is 15-20% higher to ensure the required renewal flow, with the
subsequent increase in power required in the fan motor.
In residential air conditioning, the renewal air maintains an acceptable air quality and there are no con‐
centrated contaminants to be taken into account.
The leakage of extraction air to the intake air in this energy recovery system is at a value of less than
5%. The resulting cost of moving this volume of air is much lower than in the case of a bleed sector. Do
not use this energy recovery system in industrial applications with concentrated contaminants.
2
Energy recovery system for Roof Top ACTIVA 045/090
General dimensions
1
1.2
1.2 General dimensions
1. Extraction side filter access
A.
See table
2. Intake side filter access
B.
See table
3. Extraction
C.
900 mm clearance
4. Intake
D.
1525 mm clearance
Model
A
B
Weight
[kg]
045 / 060
1365
1324
610
075 / 090
1522
1456
580
3
1
1.3
Energy recovery system for Roof Top ACTIVA 045/090
Operation
1.3 Operation
The enthalpy wheel is centred between the outdoor intake air flow and the extraction air flow. It is the
only truly self-cleaning system, as during rotation the air flow moves in opposite directions over each half
of the wheel surface.
With the rotation movement at 60 r.p.m., the wheel surface absorbs the sensible and latent energy from
the side with the highest temperature and transfers it to the side with the lowest temperature, thus making
the exchange between both air flow sides. During the summer cycle, the rotation of the wheel transfers
heat and outdoor air humidity (renewal) to the extraction air.
During the winter cycle, the process is the opposite, transferring heat and extraction air humidity to the
renewal air.
Where there is no kind of demand (air conditioning or ventilation) and the air quality is correct, the unit
is at a standstill.
If continuous ventilation mode is selected and the air renewal selected is less than 30%, only the indoor
fan will run. If air renewal of over 30% is selected, the three fans (indoor, extraction and renewal) will run
and the enthalpy wheel will turn. When the air quality is incorrect, air renewal will be 100%.
When there is a demand for cold (outdoor air not favourable) or a demand for heat and the air quality is
correct, the compressors or the heat support and the indoor fan will start up. If air renewal of over 30%
is selected, the exhaust and renewal fans and the enthalpy wheel will also run. When the air quality is
incorrect, air renewal will be 100%.
During operation in economiser mode (Free cooling), the enthalpy wheel will stop turning and there will
be no exchange, the fans continuing to run to maintain the flow of renewal and exhaust air. If the outdoor
air intake is insufficient to meet the demand, a compressor will start.
1.4 Assembly
The Rooftop unit must be installed on a Roofcurb mounting base or similar.
The energy recovery system is fitted with lugs for
hoisting and handling during the fitting process. To do
so:
1 Loosen the screw slightly.
2 Turn the lug to the correct position.
3 Tighten the screw.
4
Energy recovery system for Roof Top ACTIVA 045/090
Installation
1
1.5
1.5 Installation
Installation process
(First make sure the Economiser and air quality sensor options are installed in the Rooftop unit)
1. Disconnect the power supply to the Rooftop unit.
2. Remove the return and outdoor air side panels.
3. Remove the return air cover on the base.
4. Place the support rail in position, aligning the
mounting holes with the panel securing holes.
5. Place the return and outdoor air panels (with open‐
ing, supplied with the recovery system assembly) in
their housing on the side of the Rooftop. Secure using
the existing front closures to the posts and edge.
6. Secure both panels and, in turn, the supporting rail,
using the bolts in the holes in the original panels of the
Rooftop.
7. Apply a 25 x 25 rubber strip in the area indicated
‑A-, between the panels and the support rail.
8. Using the handling lugs, slightly lift the recovery
system assembly and release the telescopic legs until
they are flat on the ground. Replace the bolts but do
not tighten.
9. Fit a 20 x 5 rubber strip on the recovery system roof
fixing tab to the side panels of the Rooftop ‑B-.
10. Lift the recovery system assembly and rest it on
the supporting rail, facing away from the side panels
of the Rooftop.
11. Adjust the legs to the required height and tighten the bolts. A treated piece of wood measuring approx.
50 mm thick x 350 x 350 should be placed below each leg to avoid damaging the roof of the building.
12. Secure the upper panel of the recovery system to the side panels of the Rooftop, using bolts and a
sealed washer.
13. Place the seals on both sides of the recovery system and secure using self-threading bolts to the
edges of the recovery system and to the panels of the Rooftop.
5
1
1.5
Energy recovery system for Roof Top ACTIVA 045/090
Installation
B.Silicone.
C. Seals, on both sides.
D. Support legs.
E. Silicone.
14. Using a continuous line of silicone, seal the area
where the upper panel and the side seals of the re‐
covery system touch the panels of the Rooftop.
15. Install the rain protection assembly (supplied dis‐
mantled in separate packaging) on the air inlet ac‐
cording to the instructions included with its packaging.
Apply a continuous line of silicone to the area where
the upper panel of the protector touches the side pan‐
el of the recovery system ‑F-.
6
Energy recovery system for Roof Top ACTIVA 045/090
Electrical connections
1
1.6
1.6 Electrical connections
CAUTION
Loose connection terminals produce overheating of cables and terminals. The unit is working incorrectly
and there is a risk of fire.
1 The national regulations established must be followed in all cases.
2 The power supply to the energy recovery system must be independent to the general power supply
to the unit and must be fitted with its own circuit breaker (not supplied).
3 Fit the thermal magnetic and residual current circuit breaker in the installation according to the in‐
structions of the electrical specifications table and the wiring diagram.
4 Remove the side access panel to the renewal fan to access the electric box. Remove the protective
cover and connect the power cable (H05 RN-F type) to terminal strip X1.
5 Connect the telephone cable from connector J2 or J3 on board A13 to connector J15 on economiser
board A4, which is on the economiser side of the Rooftop.
6 Connect the 24 AV (red / white) power sleeve to connector J4 on board A13 and connect with the
power cables (580 and 581) on economiser board A4.
ATTENTION
If the enthalpy sensor accessory is fitted, do not connect the B17 outdoor sensor
7 Connect outdoor sensor B17 to connector J3 on economiser board A4.
8 Recovery system control board configuration. Once the accessory has been fitted, reconnect the
power to the Rooftop and the accessory. Check that the green LED (V2) on the control board (A13)
remains lit. To search for and configure accessories, press the test button on the YKN2 Open board
(A1) located in the electric box of the Rooftop 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 oper‐
ation is completed. Once switched off, check that the green LED (V2) on the recovery system board
is flashing to indicate that the accessory has been configured.
9 There is a potentiometer, P1, on the economiser board (A4) that allows for the damper to be modu‐
lated by hand. If the position is over 30%, the three fans (indoor, extraction and renewal) will run and
the enthalpy wheel will turn. The economiser dampers and the motors will return to their operating
position after 30 sec.
1.7 Maintenance
See General dimensions, see on page 3 for dimensions, accesses and minimum clearances.
Check the condition of the air filters on the air inlet and outlet sides once a month.
SIZES AND QUANTITY OF G4 (STANDARD) AND F6 / F7 (OPTIONAL) FILTERS
Model
Dimensions
Quantity
045/060 G4 Filters (Standard)
48x330x554
8
075/090 G4 Filters (Standard)
48x365x620
8
045/060 F6/F7 Filters (Optional)
97x330x554
8
075/090 F6/F7 Filters (Optional)
97x365x620
8
Check the condition of the aluminium drip protection filters inside the rain protector once a month. Wash
with water and a mild detergent if required.
The motors require no maintenance.
Check the condition and tightness of the belts every two months.
7
1
1.8
Energy recovery system for Roof Top ACTIVA 045/090
Electrical specifications
1.7.1 Enthalpy wheel
An annual inspection of the enthalpy wheel is recom‐
mended.
To do so, disconnect the power supply and open the
access panels on the air inlet side.
The wheel surface is divided into eight segments.
1
2
3
4
5
Wheel frame.
Segment fixture.
Segment retainer.
Segment.
Spacer.
If cleaning is required, remove the segments accord‐
ing to the figure and wash with water and a mild de‐
tergent.
CAUTION
Disconnect the power supply.
To remove the segments:
1 Remove the first segment.
2 Turn the wheel slowly 180º by hand and remove
the second.
3 Turn 90º and remove the third.
4 Turn 180º and remove the fourth.
5 Continue with the sequence until the eight seg‐
ments have been removed.
Use the same method to refit the segments.
1.8 Electrical specifications
(1)
Minimum cable
cross-section
(A)
(K Curve)
(mm2)
2.4
6
10
2.5
400.3.50
4.6
11.6
16
2.5
075 / 090 Q4500
400.3.50
6.2
14.6
20
4
075 / 090 Q9000
400.3.50
8.2
19.2
25
4
Model
Power supply
Standard rat‐
ing
Rated current
(Units)
(V.ph.Hz).
(kW)
045 / 060 Q3000
400.3.50
045 / 060 Q6000
(1)
K Curve (DIN, VDE 0660-104).
(2)
Based on H05 RN-F-type copper conductors.
8
Circuit breaker
(2)
Energy recovery system for Roof Top ACTIVA 045/090
Wiring diagram
1
1.9
1.9 Wiring diagram
•
NOTE
The components for on-site installation are not supplied by the manufacturer
A
On-site installation
B
Cross-section B [mm2]
C
Electronic board
D
J3
E
J2
Accessories
F
M
Exhaust fan
G
M
Renewal fan
H
M
Wheel motor
Model
Q2 [A]
Cross-section B
[mm2]
F11 [A] REG.
F12 [A] REG
F13 [A] REG
045 / 060 Q3000
10
5 x 2.5
3
3
1.4
045 / 060 Q6000
16
5 x 2.5
5.6
5.6
1.4
075 / 090 Q4500
20
5x4
7.3
7.3
1.4
075 / 090 Q9000
25
5x4
9
9
1.4
9
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