Honeywell CT2400 Thermostat User Manual


 
—-.
A quick guide for operating or making changes follows:
NOTE: System switch must be set to Heat or Cool to perform the following:
Temp
u
Warmer
Temporarily Change Temperature for Current Period
Only—
n
. Temporary indicator will
Cmlar
o
show on display; it will cancel itself at next scheduled change. To cancel sooner, press
P~&
Temp
n
u
Warmaf
Hold a Temperature Indefinitely—
~~~P
,
0
0
;
press
pJ&
to cancel.
Coobr
14
---
.—
.
n
Check Current Temperature Setting-
p;~~m
.
(If
using Temporarily Change
or
Hold,
pressing this will cancel your change.)
D
Check Programs— ~~Uk
o
Run
repeatedly to see each time and temperature; then Program .
Time
(
1
c1
Cancel a Program-
~~~Ub
until program to cancel shows; then
H
together.
o
Beck
Permanently Change a Program—Repeat steps
under Heating Program or Cooling Program
(pages 12 and 13) as applicable.
u
Return
to
normal program or start program —
p;~~m
.
~m
:
Customer Assistance
_
Adjust Fan Operation Switch, As Required
D
The thermostat fan operation switch, labeled
electric heat system, set the switch to “E. The
FUEL SWITCH (see illustration on page 17) is
“E setting will allow the fan to turn on
immedi-
factory-set in the “F position. This is the correct
ately
with the heating or cooling in a system
setting for most systems. If your system is an
where the “G” terminal is connected.
_
Adjust System On-Time, As Required
El
The system on-tim
e
is
facto-~-set
for a warm
air, gas or oil heating system. If you are installing
it on another type of system, the system on-time
must be adjusted accordingly by setting screws A
and B on the back of the thermostat. Use the
heating system table shown in the illustration,
(page 17) as a guide. The system on-time should
be optimized according to the type of system to
minimize room temperature swings. Setting the
screw “out one turn” means turning the screw
approximately 360° counterclockwise, or about
one complete turn.
In the unlikely event that you want longer furnace
on-time, readjust screws A and/or B as follows:
First, turn both screws
in
completely, then adjust
for system type:
Warm Air Furnace-Set at the Hot Water
setting, (A - out one turn, B - in).
Electric Furnace-Leave at the Warm Air
Furnace setting (A - in, B - in).
16