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Therm-X MVHRU HR95
Technical Manual
Page 42 of 59
Version 2.4, 25/09/2020
14.5.
CIRCULAR DUCT ATTENUATORS
The
SPTGLX
and
SPTGLP
circular sound attenuator is designed for reducing the noise
propagated through the HVAC ducting connected to the unit.
The attenuator comes in 2 standard lengths of 600mm and 900mm respectively and can
be fitted with central pods with aerodynamic fairings.
The double skinned housing is manufactured of pre-galvanized steel and is fitted with male spigots with integral
seal.
The attenuator and the optional pods contain a sound absorbent infill that is encapsulated with glass cloth and
plain/perforated steel.
All attenuators are manufactured in accordance with the DW 144 specification for medium pressure Class B
ductwork.
Unit
Type
Attenuator Order Reference
No pods
With pods
0.6m
0.6m
0.6m
0.9
HR95-080-V
SPTGLX-0,6-250 SPTGLX-0,9-250 SPTGLP-0,6-250 SPTGLP-0,9-250
HR95-150-V
SPTGLX-0,6-355 SPTGLX-0,9-355 SPTGLP-0,6-355 SPTGLP-0,9-355
HR95-250-V
SPTGLX-0,6-400 SPTGLX-0,9-400 SPTGLP-0,6-400 SPTGLP-0,9-400
HR95-350-V
SPTGLX-0,6-560 SPTGLX-0,9-560 SPTGLP-0,6-560 SPTGLP-0,9-560
HR95-450-V
SPTGLX-0,6-560 SPTGLX-0,9-560 SPTGLP-0,6-560 SPTGLP-0,9-560
HR95-550-V
SPTGLX-0,6-630 SPTGLX-0,9-630 SPTGLP-0,6-630 SPTGLP-0,9-630
HR95-080-H
SPTGLX-0,6-250 SPTGLX-0,9-250 SPTGLP-0,6-250 SPTGLP-0,9-250
HR95-150-H
SPTGLX-0,6-315 SPTGLX-0,9-315 SPTGLP-0,6-315 SPTGLP-0,9-315
HR95-250-H
SPTGLX-0,6-400 SPTGLX-0,9-400 SPTGLP-0,6-400 SPTGLP-0,9-400
HR95-350-H
SPTGLX-0,6-500 SPTGLX-0,9-500 SPTGLP-0,6-500 SPTGLP-0,9-500
PLEASE NOTE:
-
Attenuators supplied loose for installation on site by others
-
Bespoke sizes available on request
-
Attenuators suitable for external ducted installation
-
For additional information please consult the
Therm-X MVHRU Accessories Technical Manual