Centrimaster QPVA, QPBA User Manual

Passive chilled beams QPVA and QPBA

Passive chilled beams QPVA and QPBA

Functions

• Cooling

• Controls

The Flexicool® QPVA and QPBA passive chilled beams provide for the cooling
in a room. QPVA (width 570 mm ) and QPBA (width 430 mm ) are broad
passive chilled beams. The passive chilled beams are either ceiling installed,
in which case they lie flush with the suspended ceiling, or free space installed
without ceiling.
The passive chilled beams are available in lengths 1,2 - 4,2 m at 60 cm intervals.
In installations with passive chilled beams the air is supplied by means of
separate supply air valves.

Quick Selection

Cooling effect in W incl supply air

Product Facts

• Passive chilled beams QPBA and
QPVA for ceiling installation or
free space installation

• Coil and casing are easy to clean

• Adapted control and adjustment
equipment and lighting available
as accessories

• Quick and easy installation with
suspension rods.

Product code example

430 mm wide passive chilled beam
QPBA manufactured by Fläkt
Woods, length 240 cm.
Chilled beam QPBA-240-1 for
individual installation.

The diagram shows the approximate cooling ef fect, Ptot in W with water flow, qv = 0,05 l/s difference

Beam length in cm

between room air temperature and average water temperature = 8 °C and max sound pressure level L A10
= 30 dB(A). 1)

Fläkt Woods 8279GB 2012.07 1

Specifications are subject of alteration without further no tice.

Passive chilled beams QPVA and QPBA

Main data, range, variants and accessories

Main data for QPBA and QPVA

Cooling effect ca 260 W/m (Δt = 10°C)
Heights 142 mm
Widths 290, 430, 570 mm
Lengths 1,2 - 4,2 m at 10 cm intervals

The circulating room air flow through the chilled beam
is determined by the temperature difference (actually
density difference) in- and outside the beam, together
with beam height.

Our range of passive chilled beams

QPBA

Width = 430 mm.

Height = 142 mm.

Lengths = 1,2 - 4,2 m at 10 cm intervals.

The bottom plate is perforated with 50% free area.

QPVA

Width = 570 mm.

Height = 140 mm.

Lengths = 1,2 - 4,2 m at 10 cm intervals.

The bottom plate is perforated with 50% free area.

Material and surface finish

The casing is made of galvanized steel sheet and it is
powder painted in white NCS 0502-Y, gloss level 30
(corresponds to RAL 9010).

The casing is also available in other colours. When
ordering, the desired colour should be specified in
writing.

The cooling coil is made of copper pipe with connection
15 mm and aluminium fins. Maximum working pressure
1,6 MPa .

Placing of coil in the casing

In the standard construction, the casing length is 10 cm
longer than the effective length (coil length). The coil
is placed centrally. To adapt to room dimensions, or to
obtain space for control and adjustment equipment or for
an overhead connection of supply air and water, the beam
casing can be extended from the standard length. The coil
can be placed as desired on the longitudinal axis of the
casing.

Variants and accessories

Top connection

The coil is available with upwards bent pipelines.

Purging nipple of the coil

Required if the beam constitutes a high point in the
piping system. Placed in the return pipe.

Casing adapter

An adapter having the same form as the beam can
be used to adjust the beam length to the desired
measurement or to be placed between beams in case of
series connection.

Series connection is described in the chapter ”System and
project design”.

In the normal design, the adapter has open end walls to
allow the penetration of duct and water pipes. If a solid
end wall is required, this must be mentioned in the order.

The bottom plate of the adapter can easily be removed in
order to make e.g. duct or pipe connections.

Hoses, water

Used for connection to the pipe system and in case of
series connection of beams. Length = 210 mm.

Fläkt Woods 8279GB 2012.07 2

Specifications are subject of alteration without further no tice.