1
EST 19H & 20H
3ph
Run & Standby, Roof &
Plantroom Twinfans
Installation and Maintenance
Figure 1. EST*-X Plantroom/roof mounted in line unit.
Figure 2. EST*-R Roof mounted end inlet, side discharge unit.
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.
Suitable for operation in ambient temperatures up to 40
o
C.
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.
Figure 3. Bottom inlet unit.
A
B
Removable
top panel
F
E
Control module
located internally
Commissioning box
Bottom inlet
C
Opposed outlet grilles
A
50mm
B
F
C
E
Rectangular spigots
size EST20
H
)
Circular spigots
size EST19
H
)
D dia
Removable top panel
Commissioning
box
EST-X
EST-R
EST-B
Unit
A
B
C
D dia
E
F
EST 19H-X
1430
1635
840
630
-
-
EST
20H-X
2030
2313
1183
-
1200
700
Table 1. Dimensions (mm)
For unit weights see page 4
A
B
Removable
top panel
Opposed outlet grilles
External
commissioning box.
D dia
Control module
located internally
C
Table 3. Dimensions (mm)
For unit weights see page 4
Unit
A
B
C
D dia
EST 19H-R
1430
1635
840
630
Table 2. Dimensions (mm)
For unit weights see page 4
28. 06. 17. Leaflet Number 671845
Rect Spigot
Unit
A
B
C
E
F
EST 19H-B
1430
1635
840
889
381
* larger units have end discharge
Table 4. Dimensions (mm)
For unit weights see page 4
Rect Spigot
Unit
A
B
C
E
F
EST 20H-B
2030
2313
1183 1200
700
EST 20H-R
2030
2313
1183
1200
700
Louvred
end outlet
Bottom rectangular inlet
spigot Code: EST*-B
F
E
B
A
C
F
E
End inlet rectangular spigot Code: EST*-R
Commissioning box
EST-B/R larger units
Figure 4. Bottom inlet unit.
The EMC Directive
20
1
4/
30
/E
U
The Low Voltage
Directive
20
14
/
3
5/E
U
Nuaire: A Trading Division of Polypipe Limited
Western Industrial Estate
Caerphilly United Kingdom CF83 1NA
T: 029 2088 5911 F: 029 2088 7033 E: [email protected] W: www.nuaire.co.uk