Installation Instructions
T1--PAC
T1--PHP
LEGACY LINE--RNC
PROGRAMMABLE THERMOSTATS
A07109
Legacy Line--RNC Series Programmable Thermostat
NOTE
: Read the entire instruction manual before starting the
installation
TABLE OF CONTENTS
PAGE
SAFETY CONSIDERATIONS
1
. . . . . . . . . . . . . . . . . . . . . . . . .
INTRODUCTION
1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
INSTALLATION CONSIDERATIONS
1
. . . . . . . . . . . . . . . . . . .
INSTALLATION
1
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Step 1 — Thermostat Location
1
. . . . . . . . . . . . . . . . . . . . . . . .
Step 2 — Install Thermostat
2
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Step 3 — Set Thermostat Configuration
2
. . . . . . . . . . . . . . . . .
Step 4 — Understand Thermostat Operation
2
. . . . . . . . . . . . . .
Step 5 — Check Thermostat Operation
3
. . . . . . . . . . . . . . . . . .
WIRING DIAGRAMS
4
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SAFETY CONSIDERATIONS
Read and follow manufacturer instructions carefully. Follow all
local electrical codes during installation. All wiring must conform
to local and national electrical codes. Improper wiring or
installation may damage thermostat.
Recognize safety information. This is the safety--alert symbol
.
When you see this symbol on the equipment and in the instruction
manual, be alert to the potential for personal injury.
Understand the signal words
DANGER
,
WARNING
, and
CAUTION
. These words are used with the safety--alert symbol.
DANGER
identifies the most serious hazards which
will
result in
severe personal injury or death.
WARNING
signifies a hazard
which
could
result in personal injury or death.
CAUTION
is used
to identify unsafe practices which
may
result in minor personal
injury or product and property damage.
NOTE
is used to highlight
suggestions which
will
result in enhanced installation, reliability, or
operation.
INTRODUCTION
There are two Legacy Line--RNC Series programmable thermostat
models, one for AC applications and one for HP applications. Both
are dual powered, operating from either 24VAC or two alkaline
AA batteries. Configuration and program schedules are stored in
non--volatile memory, preserving this information during power
loss and battery removal. Features include simplified 5/2
programming, large backlit display, and modern styling.
The AC model provides one stage of heating and one stage of
cooling.
The HP model provides two stages of heating and one stage of
cooling.
INSTALLATION CONSIDERATIONS
AC Operation
For 24VAC operation, both the R and C wires must be connected
to the 24VAC power source. Batteries are not needed.
Battery Operation
When batteries are used, the common (C) connection is not needed,
saving a wire, and eliminating 24VAC operation. The thermostat
continues to operate in the event of a power failure. Battery life is
one year. A “low battery” reminder tells the homeowner when it is
time to replace the batteries. When connected without the common
wire, the thermostat will not operate without batteries. Continuous
backlighting is not available.
Both Battery and AC Operation
If both batteries and 24VAC operation are used (batteries installed
and the common wire connected), and indefinite clock operation
are provided, the battery will be used only during AC power loss,
extending battery life to nearly its shelf life.
A jumper has to be properly set for backlight operation. J2 should
be set in the “AC” position when the thermostat is operated from
24VAC. J2 should be set in the “BAT” position when the
thermostat is operated from batteries. The thermostat will continue
to operate if J2 is not in the correct position or not connected.
However, the backlight will not operate.
INSTALLATION
Step 1 — Thermostat Location
Thermostat should be mounted:
S
Approximately 5 ft (1.5m) from floor.
S
Close to or in a frequently used room, preferably on an
inside partitioning wall.
S
On a section of wall without pipes or duct work.
