14
BAS-SVX44C-EN
Installation and Wiring
Terminal Identification
identifies the programmable thermostat terminals.
Wiring Diagrams
The following diagrams show typical wiring scenarios for the touch-screen programmable thermostat.
Use
and the corresponding figure to correctly wire the thermostat.
Table 3.
Terminal identification
Connector
Type
Terminal
Label
(a)
(a) Label order above is how they appear on the thermostat terminal block.
Terminal Description
8-p
in Conne
ct
ors
Dh
Dehumidify relay
Hs
External humidity sensor input
Hp
External humidity sensor power
S2
External temperature sensor
S1
External temperature sensor
A
Economizer relay
Y2
Stage 2 compressor control relay
(W1)W2
(Aux or Em heat relay)
(b)
Second stage heat relay
(b) Text in parentheses applies to only heat pump systems.
6-
pin conne
ct
ors
R
24 Vac heating
Important:
Terminal shipped with jumper connected. Remove jumper if the 24 Vac power
supplies are separate.
Rc
24 Vac cooling
Important:
Terminal shipped with jumper connected. Remove jumper if the 24 Vac power
supplies are separate.
(O/B)W
(Changeover valve)
Heat relay
Y
Stage 1 compressor control relay
G
Fan relay
C
Common
Table 4.
System type options for programmable thermostats
System Type
Value for Option 130
See Diagram
1-heat/1-cool, conventional
1
Figure 4
1-heat/1-cool, heat pump without auxiliary heat
2
Figure 5
1-heat only, conventional without fan
3
Figure 6
1-heat only, conventional with fan
4
Figure 7
1-cool, conventional
5
Figure 8
2-heat/1-cool, heat pump with auxiliary heat
6
Figure 9
2-heat/2-cool, conventional
7
Figure 10
2-heat/1-cool, conventional
8
Figure 11
1-heat/2-cool, conventional
9
Figure 12
2-heat/2-cool, heat pump without auxiliary heat
10
Figure 13
3-heat/2-cool, heat pump with auxiliary heat
11
Figure 14
Summary of Contents for BAYSTAT152A
Page 53: ...BAS SVX44C EN 53 Notes...
Page 54: ...54 BAS SVX44C EN Notes...
Page 55: ...BAS SVX44C EN 55 Notes...
