NuAire EcoSmart EST 11 Series Installation And Maintenance Manual

EST-X
Removable top panel
C
Commissioning
box
A
Figure 1. EST*-X Plantroom/roof mounted in line unit.
Table 1. Dimensions (mm)
Unit A
EST 11-X to EST 12-X 974
EST 13-X to EST 14-X 1233
EST 15-X to EST 19-X 1430
EST 20-X to EST 26-X 2030
EST-R
A
Removable
top panel
C
Opposed outlet grilles External
commissioning box.
Figure 2. EST*-R Roof mounted end inlet, side discharge unit.
Table 2. Dimensions (mm)
Unit
EST 11-R to EST 12-R 974
EST 13-R to EST 14-R 1233
EST 15-R to EST 19-R 1430
Introduction
The Nuaire EST Twinfan Belt Drive range consists of the
following units
EST-X (Duct Mounted, Plantroom/Roof) in line unit.
EST-R (Roof Mounted, end inlet) side discharge unit*.
EST-B (Roof Mounted bottom inlet) side discharge unit*.
Units are rectangular in section. The casing is manufactured
from heavy gauge 'Aluzinc' aluminium-zinc coated mild steel.
A full size internally lined access panel is fitted to the top face
and this panel is fully detachable for inspection purposes.
The motor plate and frames are supported on the base by
resilient mountings allowing the fan unit to be operated without
the need for separate anti vibration fan case mountings.
Nuaire: A Trading Division of Polypipe Limited Western Industrial Estate Caerphilly United Kingdom CF83 1NA
T: 029 2088 5911 F: 029 2088 7033 E: info@nuaire.co.uk W: www.nuaire.co.uk
3ph Belt Drive, Run & Standby,
Roof & Plantroom Twinfans
Installation and Maintenance
E
50mm
D dia
F
Circular spigots
size EST 11-19)
B
Rectangular spigots
size EST20-26)
For unit weights see page 4
B C D dia E
974 622 400 -
1233 701 500 -
1635 780 630 -
2313 1183 - 1200
B
D dia
Control module
located internally
For unit weights see page 4
A B C D dia
974 622 400
1233 701 500
1635 796 630
The units incorporate two independent motors driving high
efficiency, forward curved centrifugal impellers running in metal
scrolls. Taper locked pulleys and wedge drive belts are
employed. The fans discharge into a common outlet chamber
through a shutter system that prevents 'blowback' through the
standby fan. The motors are manufactured to BS5000 and are
suitable for three phase supply.
Airflow and failure monitors are standard as is Class F insulation.
Suitable for operation in ambient temperatures up to 40
Handling
Always handle the units carefully to avoid damage and distortion.
Eyebolts are provided on all units for lifting purposes.
If mechanical aids are used to lift the unit, spreaders should be
employed and positioned so as to prevent the slings, webbing
etc. making contact with the casing.
F
-
EST-B
-
-
700
C
Opposed outlet grilles
Figure 3. Bottom inlet unit.
Table 3. Dimensions (mm)
Unit
EST 11-B to EST 12-B
EST 13-B to EST 14-B
EST 15-B to EST 19-B
EST-B/R larger units
Commissioning box
C
F
Figure 4. Bottom inlet unit.
Table 4. Dimensions (mm)
Unit
EST 20-B to EST 26-B
EST 20-R to EST 26-R
1
The EMC Directive
2014/30/EU
The Low Voltage
Directive
2014/35/EU
Commissioning box
B
A
Removable
top panel
Bottom inlet
Control module
F
E
located internally
For unit weights see page 4
A B C
974 974 622 457
1233 1233 701 762
1430 1635 796 889
* larger units have end discharge
End inlet rectangular spigot Code: EST*-R
B
A
E
Bottom rectangular inlet
F
E spigot Code: EST*-B
For unit weights see page 4
A B C
2030 2313 1183 1200
2030 2313 1183 1200
10. 02. 25. Leaflet Number 671143
o C.
Rect Spigot
E F
229
304
381
Louvred
end outlet
Rect Spigot
E F
700
700