AJAX PVG WW, Operating And Maintenance Manual

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MXG461…U, MXF461…U
M
odulating Control Valv
es
T
e
chnical Instructions
With Magnetic
Actuators
Docu
m
ent Number CA1N4455E-P25
June 14, 2006
Siemens Buil
di
ng T
e
chnol
ogi
es, Inc.
Page 5
Mounting, Continued
Straight-thro
ugh Valv
es
Only three
-way MX.461...U valves are sup
plied. The
y may be use
d as st
raight
-throu
gh
norm
ally closed valves by closing off port "B":
Port "B" can be sealed
with a Z155/65
blanking flange and gasket.
B
SVAL0008R1
BLANKING
FLANGE
Figure 4. MXF461...U Flanged Valv
e
s
in
Straight-thro
ugh Applications.
Port "B" can be sealed
with the
acce
ssorie
s supplie
d (bla
n
k
ing di
sk,
gasket, and t
he nut).
B
Sval0007R1
Figure 5. MXG461...U Scre
w
e
d Valves in
Straight-thro
ugh Applications.
Installatio
n
MXG461...U
screwed valv
es are flat-faced to facilitate seali
ng with the gaskets
supplied. Do not use hemp, tape or
thread-sealing compound.
Do not insulat
e the actuator.
For note
s on
electri
cal in
st
allation, se
e
Term
inal La
yout
.
Maintenance
The valves and actuators require no mai
ntenance o
r service. Th
e valve stem is
sealed
with a mainte
nan
ce-f
ree O
-rin
g glan
d.
Should the va
lve electro
nics prove faulty
, the electroni
cs m
odule
sh
ould be ex
ch
ange
d
for a replacement part, part number ASE1 (1/2-inch t
o
1-1/4 inches) or ASE2
(1-1/2 inche
s to 2-1/2 inche
s). Mou
nti
ng i
n
structions are encl
osed (Ref. 35678).
W
ARN
IN
G:
Under operating conditions within the limits defined by
the application
data, the actuator will become hot, but this does not represent a fire
risk.
Always mai
ntain the minim
um clea
rance specified (see
Dim
ensio
ns
).
T
e
chnical Instructions
MXG4
61…U,
MX
F461…U M
odulating Control Valv
es
Docum
ent Number CA1N4455E-P25
w
it
h
Magnetic
Actuators
June 14, 2006 Page 6
Siemens Buil
di
ng T
e
chnol
ogi
es, Inc.
Specifications
Electri
cal Interface
Powe
r su
pply
Cla
ss 2
Supply voltage
24 Vac, 50/60 Hz
– Maximum voltage tolerance
+20/–15%
Control signal
(user-sel
ected)
0 to 10 Vdc, 2 to 10 Vdc, or 4 to 20 mA
Software cla
ss
Cla
ss
A
Nominal power
See
Sizing
Position feedback:
Output
0 to 10 Vdc = 0 to 100% stroke
Maximum rati
ng
2 mA
Non-linearity
±2% of full scale
Product Specific Data
Applications
To EN60730
Nomin
al pressure
232 p
s
i (16 b
ar)
Operating pressure p
e
max
145 p
s
i (1 Mp
a )(1
0 bar)
Pressure differential
'
P
v
ma
x
See
Sizing
Lea
kag
e at
'
P
v
= 14.5 psi (0.1 Mpa) (1bar)
A
ĺ
AB
Max. 0.02 %
k
vs
(to IEC53
4-4
)
B
ĺ
AB
Dep
end
s on
appli
cation
data (<0.2% C
v
)
Admissible m
edia
Water, or wat
er/glycol mixt
ures with
maximum 50% glycol
Temperature of
medium
36°F
to 248°F (2°C to 120°C)
Valve c
h
ar
ac
ter
is
tic
(s
tr
ok
e, k
vs
)
Linea
r or e
qu
al percenta
ge
(use
r-
sele
cted
), optimized in lo
w
openi
ng
range (to IEC534-2-4)
Stroke
re
solu
tion
'
H/H
10
0
1:1000 (H
=
stro
ke
)
Hysteresi
s Typically
3%
Type of operation
Modulating
Manual adjustment
Yes, with handwheel
Position with
actuato
r de
-e
nergi
ze
d
A
ĺ
AB closed
Orientation
Upri
ght to horizontal
Note that orientation affect
s protection
stand
ard
Positioning time
d
1 se
co
nd
Material
s (val
ve body)
Hou
sin
g part
s
Ca
st iron
Inner valve
CrNi Steel
Seat Brass Valve stem seal
EPDM (O
-ring)
Bellows
Tombac
, bronz
e
, CrNi
s
teel
Electri
cal con
nectio
n
Con
ne
ction termin
al
Scre
w termi
n
als
Per terminal, with wire (no lug)
2 × 16 AWG or 1 × 14 AWG
Per terminal with wire
2 × 16 AWG or 1 × 12 AWG
Miscellan
eou
s
Weig
ht (incl
u
ding pa
ckagi
ng)
See
Dim
ensi
ons
Dimensions See
Dim
ensi
ons
Ambient conditions
Maximum am
bient tempe
rature 113°F
(45°C)
Agency Approvals
UL listing
Per UL 873
C-UL
Certified to Canadi
an Standard
C22.2
No.
24
Suitable for u
s
e in air h
and
ling sp
aces
NEMA Type 1