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Trane Fan-Powered Low-Height Parallel Instalační manuál Strana 16

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Trane
An American Standard Company
www.trane.com
For more information contact
your local district office or
e-mail us at [email protected]
Literature Order Number VAV-SVX02B-EN
File Number SV-TD-VAV000- SVX02B-EN- 0302
Supersedes VAV-SVX02A-EN and VAV-IOM-6
Stocking Location La Crosse
Trane has a policy of continuous product and product data improvement and reserves the right to change design
and specifications without notice. Only qualified technicians should perform installation and servicing of
equipment referred to in this publication.
Constant-Volume Single-
Duct VAV ( VCV 3011)
This is used when a constant volume of
air is required to supply a zone. A
thermostat is still often required to
modulate a reheat coil to maintain
temperature control. The thermostat is
never connected to the “T” port on the
volume regulator. The following
procedure is used to calibrate this type
of unit with a PVR.
Constant-Volume
Single-Duct VAV (VCV 3011)
1. Be sure there is 0 psi at the “T” port.
2. Set LO thermostat adjustment knob to
desired unit cfm.
The unit will now modulate to the
calibrated cfm setting. See Figure 18 for
typical constant volume single-duct
piping diagram.
Figure 18–Typical Constant-Volume Single-Duct Piping Diagram
T
ee
(
137.9
)
2
0
S
(Reverse-Actin
g)
T-
S
ta
t
Two-Pip
e
R
e
mot
e
-Mo
u
nt
ed
El
ec
tri
c
H
ea
t
e
r T
e
rmin
a
l Bo
x
(
75.8
)
11
(
86.2
)
12.
5
14
(
96.5
)
Sta
g
e
1
Sta
g
e
2
Sta
g
e
3
Airfl
ow
Safet
y
Switc
h
P.E. Sta
g
e Switch(es
)
(Normall
y
-Open
)
(
137.9
)
2
0
S
Flow Rin
g
A
c
t
ua
to
r
HI
L
O
H
L
Re
g
ulato
r
B
M
Vol
u
m
e
T
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