Fläkt Woods
3099 US 03.02
4
Specifications are subject to alteration without notice
PUMA (A–F) Rotary heat exchanger
TECHNICAL HANDBOOK
Design
General
The heat exchanger consists of a casing, a rotor of hygro-
scopic or non-hygroscopic type, and a rotor drive unit.
Adjustable seals are fitted between the casing and the
rotor on both sides, in order to minimize the leakage of
air. The heat exchanger can be ordered either with or
without purging sector.
The purging sector is adjustable and prevents the carry-
over of exhaust air to the supply air.
Casing for sizes 060–240
The casing is of single-skin design and is made as one
unit. An inspection panel (2 panels for size 190 and larg-
er sizes) is located on the end wall or front (optional) of
the casing as shown in Fig. 1. The drive motor and speed
controller (for a variable speed unit) are fitted and tested
at the factory. Note that a split casing as shown in Fig. 2
is available for size 150 and larger sizes.
Casing for sizes 265–500
The casing is of single-skin design and is delivered split,
as shown in Fig. 3. Size 265 and 290 units can also be
ordered assembled at the factory. Inspection panels are
located on the front or on the end wall (optional) of the
heat exchanger as shown in Fig. 3. The drive motor is
installed on the inside of the inspection panel. Access
panels are provided on the front of the casing for installa-
tion of the rotor sector.
Fig. 1
Fig. 2
I
nspection panel
standard
Inspection panel, optional
Inspection panel
standard
Inspection panel, optional
Fig. 3.
Delivery
The ECONOVENT PUM(A-F) Heat exchanger is deliv-
ered as shown in Table 1.
●
Standard. 1) A composite rotor (PUMF) is always sectorized.
One factory-assembled unit
Split casing
Split casing
( 2 units)
Size
One-piece
Sectorized
Sectorized
Sectorized
bbb
rotor
1)
rotor rotor rotor
060
080
095
●
110
120
●
135
150
170
190
200
215
240
●
265
290
320
350
380
420
460
500
Delivery form in split version.