Honeywell RTH221B1021 Quick Installation Guide

69-2448ES—03 6
Quick Installation Guide
Connect Wires (alternate wiring)
5
If labeled wire does not match any terminal designation, see
diagram below.
M32169A
REMOVE JUMPER BETWEEN R AND RC IF YOU HAVE
WIRES ON BOTH R AND RC.
DO NOT USE C, C1, OR X WIRE. DO NOT USE B WIRE
IF YOU ALREADY HAVE 0 WIRE. WRAP BARE END OF
WIRE WITH ELECTRICAL TAPE.
PLACE A JUMPER (PIECE OF WIRE) BETWEEN Y AND
W IF YOU ARE USING A HEAT PUMP WITHOUT
AUXILIARY/BACKUP HEAT.
1
2
3
O/B Y RC R G W
2 33 1
1
OR
C1
X
B
OR
B
H
OR
Y1
M
OR
RH
4
V
OR
F
OR
W1
H
1
OR
R

Honeywell RTH221B1021 Specifications

General

Type	Non-programmable
Display	Digital
Power Source	Battery
Temperature Control Range	40°F to 90°F (4°C to 32°C)
Stages	1 Heat/1 Cool
Voltage	24V
Backlight	No
Compatibility	Single-stage heating and cooling systems