Off on – Robertshaw Deluxe Programmable User Manual

Page 16

OUTPUT TERMINAL FUNCTIONS – 300-225

W1 ...............Energizes on a call for first stage heat

Y1 ................Energizes with a call for cooling

G..................Fan is energized with a call for heating or

selected by pressing the FAN button

R ..................Independent switching voltage*

24V ..............24 VAC hot from the equipment transformer

24V(c) ..........24 VAC common from the equipment

transformer

RS2..............Use to connect outdoor temperature
RS1

sensor and/or indoor remote sensor

RS+V

options. Refer to the instructions included
with the sensors.

* Allows for DC operation required on some older

Lennox and McQuay units.

To replace a dual transformer system, connect the hot
lead of the higher rated transformer (T1) to the 24V ter-
minal. Connect the common to the 24V(C). Connect the
common of the second transformer to the common lead
of the T1 and tape off or wire nut the hot lead of T2.

300-225

RS2

RS1

RS+V

24V

24V(c)

4 events

2 events

Smart fan OFF

4 min. (on/off)

2 min. (on/off)

Unlocked

Locked

Electric

Gas