Manual 2100-193
Page 16
HEAT ANTICIPATION
The thermostats shown below have a fixed heat
anticipator for stage 1 with no adjustment required.
Stage 2 has an adjustable anticipator for the W2
connection and fixed for the W3 connection. Both the
W2 and W3 circuits are controlled by the stage 2 bulb.
The only heat anticipator that needs to be checked is
stage 2 and it should be set to match the load carried by
the W2 circuit. The normal factory wiring provides for
only one electric heat contactor to be controlled by W2,
and the anticipator should be set at .40A. If special field
wiring is done, it is best to actually measure the load but
a good rule is .40A for EACH heat contactor controlled
by W2.
THERMOSTAT INDICATOR LAMPS
The red lamp marked "Em. Ht." comes on and stays on
whenever the system switch is placed in emergency heat
position. The green lamp marked "check" will come on
if there is any problem that prevents the compressor
from running when it is supposed to.
EMERGENCY HEAT POSITION
The operator of the equipment must manually place the
system switch in this position. This is done when there
is a known problem with the unit, or when the green
"check" lamp comes on indicating a problem.
COMPRESSOR MALFUNCTION LIGHT
Actuation of the green "check" lamp is accomplished by
a relay output from the heat pump control board which
is factory installed. Any condition such as loss of
charge, high head pressure, etc., that will prevent
compressor from operating will cause green lamp to
activate. This is a signal to the operator of the
equipment to place system in emergency heat position.
j
No automatic changeover position - must manually place in heat or cool. Reversing
valve remains energized at all times system switch is in heat position (except during
defrost cycle). No pressure equalization noise when thermostat is satisfied on either
heating or cooling.
k
Allows thermostat to control both heating and cooling operation when set in "Auto"
position. Reversing valve de-energizes at end of each "On" heating cycle.
IMPORTANT NOTE: Both thermostat and subbase combinations shown above
incorporate the following features: Man-Auto fan switch, Off-Heat-Cool-EM.
Heat Switch, and two (2) indicator lamps - one for emergency heat and one for
compressor malfunction.
TABLE 6
WALL THERMOSTAT and SUBBASE COMBINATIONS
p
u
o
r
G
t
a
t
s
o
m
r
e
h
T
e
s
a
b
b
u
S
s
e
r
u
t
a
e
F
e
t
a
n
i
m
o
d
e
r
P
A
7
1
0
-
3
0
4
8
)
9
2
1
1
R
4
7
8
T
(
9
0
0
-
4
0
4
8
)
1
8
1
1
L
4
7
6
Q
(
l
o
o
C
r
o
t
a
e
H
1
o
t
u
A
o
N
B
8
1
0
-
3
0
4
8
)
4
2
0
1
N
4
7
8
T
(
1
0
1
-
4
0
4
8
)
1
6
2
1
F
4
7
6
Q
(
l
o
o
C
–
t
a
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H
c
it
a
m
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t
u
A
2
n
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it
i
s
o
P
r
e
v
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e
g
n
a
h
C
9
4
0
-
3
0
4
8
0
8
3
-
3
9
F
1
t
a
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h
e
g
a
t
s
3
,l
o
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c
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g
a
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2
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b
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m
m
a
r
g
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P
c
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g
n
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c
l
a
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n
a
M
r
o
o
t
u
A
2
4
0
-
3
0
4
8
)
0
7
0
1
G
1
1
5
8
T
(
t
a
e
h
e
g
a
t
s
2
,l
o
o
c
e
g
a
t
s
1
r
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v
o
e
g
n
a
h
C
c
it
a
m
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t
u
A
c
i
n
o
r
t
c
e
l
E
5
4
0
-
3
0
4
8
)
1
6
7
1
A
1
4
8
T
(
t
a
e
h
e
g
a
t
s
2
,l
o
o
c
e
g
a
t
s
1
l
a
u
n
a
M
