Installation And Maintenance - NuAire ECOSMART TWINFAN Series Installation And Maintenance Manual

Installation and Maintenance

All units have an internal connection box requiring connection
to the mains supply on installation. It is the installers
responsibility to drill the case to provide access for the
electrical cables. Care should be taken not to damage internal
components and the cable entry should be properly sealed.
A small commissioning box is provided on the outside of
the case.
NOTE: A Commissioning Procedure document (leaflet No.
671154) is available on request from the Nuaire Technical
Library Tel: 02920 885911.
The unit should be securely screwed to its curb or mounting to
prevent vibration and/or wind damage. Note that on the bottom
inlet (EST-B) units, the cabling could be carried up from inside
the building through the bottom inlet spigot.
Prefabricated Curb
CODES: ESPFC* (typical)
Manufactured in
pre galvanised steel
these curbs will reduce
design work and guarantee
correct unit mounting when on site.
Note: Upper faces of curb are fitted with robust sealing strip.
Table 3. Prefabricated curb dimensions (mm)
Unit Prefab
Code Curb Code
EST1-* ESPFC1
EST2-* ESPFC2
EST3-* ESPFC3
EST4-* ESPFC4
EST5-* ESPFC4
EST6-* ESPFC4
EST9-* ESPFC5
Roof Opening and Curb Dimensions
Figure 4. Roof curbs
For bottom inlet only
Table 4. Dimensions (mm)
Unit Prefab
Code Code
EST1-* ESPFC 1
EST2-* ESPFC 2
EST3-* ESPFC 3
EST4-* ESPFC 4
EST5-* ESPFC 4
EST6-* ESPFC 4
EST9-* ESPFC 5
Figure 3.
A B C
635 435 250
805 650 250
900 650 250
1095 910 250
1095 910 250
1095 910 250
1425 1045 250
A B C
535 335 665
700 550 830
795 550 925
940 760 1120
940 760 1120
940 760 1120
1265 900 1445
ECOSMART Direct Drive Roof Mounted Twinfans
Roof Upstand Mounting
Casing skirt depth
The fan casings have an inside skirt depth of 60mm or, in the
case of the largest size units only, 50mm.
It is recommended that the units are mounted upon a suitable
curb or upstand which has a minimum height of 150mm
(inclusive of the timber capping if applicable, see curb
dimensions).
This mounting height provides adequate distance to avoid any
standing water on the roof being drawn into the fan (this can
occur on bottom inlet installations if a unit is not properly
installed and an air leak in the unit /ductwork joint is pulling
air over the curb. The recommended height will also ensure that
the unit does not 'stand' on its skirt edge.
D E F
465 621 421
680 791 636
680 886 636
940 1105 920
940 1105 920
940 1105 920
1080 1435 1065
2
G
50
50
50
75
75
75
75
16. 06. 15. Leaflet Number 671142