Wiring Diagrams - Robertshaw 300 Installation & Programming Manual

OFF ON
events 2 events
4
Smart fan "OFF
'ON'
min. (on/off)
4 2 min. (on/off)
Unlocked Locked
Standard Add-on
Single stage
Multistage
LED #l only LED #l with filter symbol
LED #2 only LED #2 with fault symbol
OUTPUTTERMINAL FUNCTIONS - 300-229
r2
w l
ri
OFF ON
2 events
4 events
"ON"
Smart fan "OFF
2 min. (on/off)
4 min. (on/off)
Unlocked Locked
Gas
Electric
Multistage
Single stage
LED #l only
LED #1 with filter symbol
: LED #2 with fault symbol
LED #2only
b
w2 . . . . . . .- -........ Energizes auxiliary heat as second stage
emergency heat
Y2 . . . . . . . . . . . . . . . . . . . . Energizes compressor no. 2 on a call for
second stage heating or cooling
Wl . . . . . . . . . . . U. . . M . Energizes auxiliary heat as last stage heating or
first stage emergency heat
Yl . . . . . . . . . . . . . . ".". Energizes compressor no. 1 on a call for
first stage heating or cooling
G . . . . . . . _ . . . . . . . _... Fan is energized with a call for heating
or cooling or by pressing the fan button
R . . . . . . . . . . . . . . . . . . . . Independent switching voltage'
. 2 4
24V . . . . . . . . . . . . . . . . .
VAC hot from the equipment transformer
24V(c) . . . . . . . . . . . . . 24 VAC common from the equipment transformer
. . . . . . . . .
LED1 . . . . . . Free lights for status
LED2 or function indication
RS2 . . . . . . . . . . . . . . . . . Use to connect outdoor temperature sensor
RSl
and/or indoor remote sensor options. Refer
RS+V
to the instructrons included with the sensors.
0 . . . . . . . . . . . . . . . . . . . . . Energues the reversing continuously in the
B . . . . . . . . . . . . . . . . . . . . . Energizes the reversing continuously in the heating and off
modes.
NO . . . . . . . . . . . . . . . . . . . Rel a y coil is de-energized in the night
COM
event. In all other events, the relay coil is
NC ener Ized.
Allows for D8 operation required on some older
l
Lennox and McQuay units.
To replace a dual transformer system, connect the hot
lead of the higher rated transformer (Tl) to the 24V
terminal. Connect the common to the 24V(C). Connect
the common of the second transformer to the common
lead of the Tl and tape off or wire nut the hot lead of T2.
20
w2 . . . . . . . . . . . . . . . . . . . Energizes auxiliary heat as second stage
emergency heat
Y2 . . . . . . . . . . . . . . . . . . . . Energizes compressor no. 2 on a call for
second stage heating or cooling
Wl ,.................. Energizes auxiliary heat as last stage heating or
first stage emergency heat
Yl . . . . . . . . . . . . . . . . . . . . Energizes compressor no. 1 on a call for
first stage heating or cooling
G . . . . . . . . . . . . . . . . . . . . . Fan is energized with a call for heating
or cooling or by pressing the fan button
R . . . . . . . . . . . . . . . . . . . . . Independent switching voltage'
VAC hot from the equipment transformer
24V . . . . . . . . . . . . . . . . . .
24
24V(c) . . . . . . . . . . . . . 24 VAC common from the equipment transformer
LED1 . . . . . . . . . . . . . . . Free lights for status
or function indication
LED2
.
Use to connect outdoor temperature sensor
RS2 B......,........
and/or Indoor remote sensor optlons. Refer
RSl
to the InstructIons included with the sensors
RS+V
0 .,................... Energizes the reversing continuously In the cooling mode
B . . . . . . . . . . . . . . . . . . . . . Energizes the reversing continuously in the heating and off
modes
NO . . . . . . . . . . . . . . . . . . . Relay de-energized in the night
co11
IS
event In all other events, the relay co11 IS
COM
energized.
NC
Allows for DC operation required on some older
l
Lennox and McQuay units.
To replace a dual transformer system, connect the hot
_
lead of the higher rated transformer (Tl) to the
terminal. Connect the common to the 24V(C). Connect
the common of the second transformer to the common
- 1 1 ~1 I O F! off
l,ac,- , m <: '+,a "1 2
or wire nut the hot lead of T2.
WIRING DIAGRAM - 300-229
cooling mode
O C C
WIRING DIAGRAM - 300-230
- .
24V
Note 1: If jumper removed, a separate
IS
transformer must be used to power the loads.
Note 2: This thermostat may be used with 24
Volt DC. The negative side of the DC supply
must be wired to the 24V (C) terminal.
Common
NQtOl
1-------
:
i---- a
-&
Transformer
separate ttanstommr used
21
Transformer
- -
Line
Voltage