Product Overview

TH 192 DN Day-Night and DNV Day-Night-Vent Room Thermostat Technical Instruction
155-067P25
Rev. 1, July, 1999
Siemens Building Technologies, Inc. Page 9
Landis Division
Li
LiLi
Lim
mm
mi
ii
it S
t St S
t St
tt
to
oo
op
pp
p
A
AA
Ad
dd
dj
jj
ju
uu
us
ss
st
tt
tm
mm
me
ee
en
nn
nt
tt
t
Thermostat limit stops define the
minimum and maximum thermostat set
points. The limit stops engage in the set
point cam gear teeth and cause
interference between the set point cam
gear and the adjustment knob gear.
To change limit stop settings, use needle
nose pliers to pull limit stop between the
set point cam gear teeth. Rotate limit stop
to its new position. Do not pull limit stop
any more than necessary to clear the gear
teeth. Changing the limit stop position one
gear tooth changes the limit stop setting
by 1-1/3
°
F (0.7
°
C).
F
FF
Fi
ii
ig
gg
gu
uu
ur
rr
re
e e
e 8
88
8.
. .
. T
TT
TH
H H
H 1
11
192
92 92
92 D
DD
DN
N N
N &
& &
& D
DD
DN
NN
NV
VV
V
L
LL
Li
ii
im
mm
mi
ii
it
t t
t S
SS
St
tt
to
oo
op
p p
p A
AA
Ad
dd
dj
jj
ju
uu
us
ss
st
tt
tm
mm
me
ee
en
nn
nt
tt
ts
ss
s.
..
.
S
SS
Se
ee
en
nn
ns
ss
si
ii
it
tt
ti
ii
iv
vv
vi
ii
it
tt
ty
yy
y
A
AA
Ad
dd
dj
jj
ju
uu
us
ss
st
tt
tm
mm
me
ee
en
nn
nt
tt
t
To change thermostat sensitivity, use a flat blade
screwdriver to carefully move the sensitivity slide to
the desired position as follows:
Graduation
closest to the
rigid end of
the bimetal
element
4 psi/
°
F
(50 kPa/
°
C)
Graduation
closest to the
minimum
(MIN) end of
the bimetal
element
1 psi/
°
F
(12 kPa/
°
C)
N
NN
NO
OO
OT
TT
TE
EE
E:
::
: If the thermostat sensitivity is adjusted,
the thermostat must be recalibrated.
F
FF
Fi
ii
ig
gg
gu
uu
ur
rr
re
e e
e 9
99
9.
. .
. T
TT
TH
H H
H 1
11
192
92 92
92 D
DD
DN
N N
N &
& &
& D
DD
DN
NN
NV
VV
V
S
SS
Se
ee
en
nn
ns
ss
si
ii
it
tt
ti
ii
iv
vv
vi
ii
it
tt
ty
y y
y A
AA
Ad
dd
dj
jj
ju
uu
us
ss
st
tt
tm
mm
me
ee
en
nn
nt
tt
t.
..
.
T
TT
Th
hh
he
ee
er
rr
rm
mm
mo
oo
os
ss
st
tt
ta
aa
at
tt
t
C
CC
Ca
aa
ali
lili
libr
brbr
bra
aa
at
tt
ti
ii
io
oo
on
nn
n
The thermostat is factory calibrated to a control pressure of 7.5 psi (52 kPa) when the set
point and the ambient temperature are both at 72°F (22°C). The factory sensitivity setting
is approximately 2.5 psi/
°
F (31 kPa/
°
C). No adjustments are required if these settings are
appropriate for the application. If the thermostat has been tampered, the sensitivity
changed, or is out of adjustment, use the following steps to re-calibrate the instrument.