Technical Instructions
Document No. 155-516P25
Rev. 2, December, 1998
P
PP
Pa
aa
age
ge ge
ge 2
22
2
o
oo
of
f f
f 9
99
9 Siemens Building Technologies, Inc.
Landis Division
F
FF
Fe
ee
ea
aa
at
tt
tur
urur
ures
eses
es
x
UL listed, FM approved, CGA and AGA certified, IRI approvable, ISO 9001 certified;
European, Australian and Japanese approved versions available.
x
Safety shutoff function, pressure regulating function and air/gas ratio control in one
compact unit.
x
Simplifies commissioning and reduces startup time.
x
Maintains air/gas ratio when the air flow is disrupted.
x
Automatic compensation for combustion chamber back pressure fluctuations.
x
No mechanical wear or play that causes drifting.
x
Compensation for air temperature fluctuations.
x
Visual stroke position indicator.
x
Can be mounted in any location.
x
Optional auxiliary switches available.
x
Excellent tracking characteristics
A
AA
App
pppp
ppli
lili
lic
cc
ca
aa
at
tt
ti
ii
io
oo
on
nn
n
SKP70… series actuators can be combined with ½-inch to 5-inch VG… series gas valve
bodies. VG… series gas valves are ordered as separate items (
See
VG…U.. Technical
Instruction No. 155-512P25).
If the combustion air pressure exceeds the permissible value of 12” or 20” w.c. (
See
Specifications), the pressure must be reduced by means of a pressure reducing T-
fitting (
See
Figure 4, AGA78).
A motorized pressure reducing control (SQN37… ) can also be installed in the air
impulse line to continuously optimize combustion when used in conjunction with an
oxygen trim system.
P
PP
Pr
rr
ro
oo
odu
dudu
duc
cc
ct
t t
t N
NN
Nu
uu
um
mm
mb
bb
be
ee
er
rr
rs
ss
s
T
TT
Ta
aa
ab
bb
bl
ll
le
e e
e 1
11
1.
. .
. P
PP
Pr
rr
ro
oo
od
dd
du
uu
uc
cc
ct
t t
t N
NN
Nu
uu
um
mm
mb
bb
be
ee
er
rr
rs
ss
s
O
OO
Or
rr
rd
dd
de
ee
er
r r
r N
NN
Nu
uu
um
mm
mb
bb
be
ee
er
rr
rO
OO
Op
pp
pe
ee
er
rr
ra
aa
at
tt
ti
ii
ing
ngng
ng
V
VV
Vo
oo
ol
ll
lt
tt
ta
aa
age
gege
ge
P
PP
Pr
rr
roo
oooo
oof
f f
f o
oo
of
f f
f C
CC
Cl
ll
lo
oo
os
ss
su
uu
ur
rr
re
ee
e
&
& &
& A
AA
Au
uu
ux
xx
xi
ii
il
ll
li
ii
ia
aa
ar
rr
ry
y y
y S
SS
Sw
ww
wi
ii
it
tt
tc
cc
ch
hh
h
T
TT
Ty
yy
yp
pp
pe o
e oe o
e of
ff
f
S
SS
Sw
ww
wi
ii
it
tt
tc
cc
ch
hh
h
SKP70.110U17 110-120 Vac No —
SKP70.111U17 110-120 Vac Auxiliary SPDT
SKP70.191U17 110-120 Vac Proof of Closure SPST
SKP70.192U17 110-120 Vac
Proof of Closure
& Auxiliary
SPST
SPST
SKP70.110U27 220-240 Vac No —
SKP70.111U27 220-240 Vac Auxiliary SPDT
SKP70.192U27 220-240 Vac
Proof of Closure
& Auxiliary
SPST
SPST
AGA78
Air pressure reducing T-fitting
I
II
In
nn
ns
ss
st
tt
ta
aa
all
llll
lla
aa
at
tt
ti
ii
io
oo
on
n n
n C
CC
Co
oo
on
nn
nv
vv
ve
ee
en
nn
nt
tt
ti
ii
io
oo
on
nn
n
WARNING:
Personal injury/loss of life may occur if a
procedure is not performed as specified.
To Next Page
Loading...
Need help?
General
