Honeywell CPFILA Installation Instructions

I
Honeywe
I I
Heating, Air Conditioning or
Heating/Air Conditioning
Thermostats
INSTALLATION INSTRUCTIONS
The CT50A is for most gas and oil
heating-only systems.
The CTSOC is for most electric
air condmoning-only systems.
The CTSlA is
for
most gas,
oil,
or electric
healing/electric air conditioning systems
The CT53A is
for
millivoltage heating systems.
Do-it-yourself
models
CT5OA,C; CT51A; CT53A
CPfilA shown
YOUR
NEW
THERMOSTAT
Your new Honeywell CT50A
Heating Thermostat will replace
most 15 to 30
V,
2-wire heating
system thermostats. The CT50A
is suitable only for gas or oil
heating systems (NOT for air
conditioning, heating/air
conditioning, heat pump or
electric heating systems).
Your new CT5OC Cooling
Thermostat will replace most 15
to 30 V, 3-wire air conditioning
system thermostats (NOT for
heating, heating/air conditioning
or heat pump systems).
Your new CT51 A
Heating/Cooling Thermostat will
replace most 15 to 30 V, 4-wire.
heating/ cooling system
thermostats. The CT51A is
suitable for gas, oil or electric
heating/electric air conditioning
systems (NOT for heat pumps).
Your new CT53A Heating
Thermostat is suitable for 250,
500 or 750 millivolt
(mV)
heating
systems only.
PREPAI
REMOL
WIRE A
TROUB
Proper installation of your
new thermostat will occur
if you follow instructions STEP-
BY-STEP. It is recommended
that as you read, understand and
complete each step, you check
it off with pencil
or
pen.
Check thermostat
suitability lor your home's
system by reviewing YOUR NEW
If you are unsure about wiring
procedures, please call a
qualified service technician for
assistance. THERMOSTAT section, above.
FLAT BLADE
SCREWDRIVER HAND OR POWER
DRILL WITH 3/16 INCH
DRILL BIT
WIRE CUTTER/STRIPPER
OR SHARP KNIFE
SPIRIT LEVEL OR PLUMB BOB AND LINE
11.95%
and discard the
under the cover.
Save package of screws
and instruction pages.
anticipator adjustment
Disconnect wires
from old thermostat or
subbase. If your thermostat
has more than 2 wires, as
you disconnect each wire,
tape the end and label it with
the letter of the terminal
designation to make
reconnection to new
thermostat easier. Take care
that these wires do not fall
back into the wall opening.
Keep the old
thermostat
for
reference purposes until
your new thermostat is
functioning smoothly.
WiRE AND
MOUNT
For CTSOA:
Connect each
rom the wall to
either terminai on the
back of the thermostat.
Tighten t h e screws.
For CT50C or
Cf51 A:
Connect wires
from the wall to matching terminals on back of thermostat.
Tighten the screws.
NOTE: If terminal designations on old thermostat do not match
those on new thermostat, refer to chart below.
system, and callnot