RTH2520
69-1867ES—05 03-11 4/8
Set the year using
and press
[ Clk ]
to dis-
play the month.
Set the month using
and press
[ Clk ]
to dis-
play the date.
Set the date using
.
Press
[ Exit ]
to exit.
5.3 Energy-saving Schedule
Your thermostat is preprogrammed with an energy-saving schedule.
The schedule automatically controls your heating or cooling system by
switching from one setpoint to the next according to the preset times.
5.4 Modifying the Schedule
You can program up to 4 periods per day, each period having its
own temperature settings. You can have a different program for
each day of the week. For each period, you can set the start time,
the heating setpoint and the cooling setpoint.
Note
:
If you wish to use only 2 periods, set periods “1 and 4” or
periods “2 and 3”. Early Start will not work if you set periods “1 and
2” or periods “3 and 4”.
Press
[ Pgm ]
. The period 1 settings are displayed.
Note
: During programming, to skip a period, press
[ CLR ]
while the
period is displayed. For example, in the predefined energy-saving
schedule, periods 2 and 3 have been skipped for Saturday and Sunday.
Press
[ Day ]
to select the day. Press for 3 seconds to select all
7 days. (MO: Monday, TU: Tuesday, WE: Wednesday,
TH: Thursday, FR: Friday, SA: Saturday and SU: Sunday).
Set the time (in increments of 15 minutes) using the
but-
tons
.
Press
[ P# ]
. The heating or cooling setpoint
flashes depending on the position of the Heat/
Cool selector.
Set the desired temperature for the displayed
period using the
buttons.
Use the Heat/Cool selector to switch to the other mode (e.g., if
you were in Heating mode, switch to Cooling mode). The set-
point for that mode flashes.
Set the desired temperature using the
buttons.
Press
[ P# ]
to go to the next period.
Repeat steps 2 to 8 for the remaining periods.
Press
[ Exit ]
to exit.
Power supply: 2 AA batteries
Maximum load: 1 A @ 24 VAC per output
Setpoint range (heating): 41 to 82°F (5 to 28°C)
Setpoint range (cooling): 59 to 95°F (15 to 35°C)
Display range: 23 to 122°F (-5 to 50°C)
Storage temperature: -2 to 122°F (-20 to 50°C)
Temperature display resolution: 1°F (0.5°C)
Accuracy: ± 1°F (0.5°C)
Heating/cooling cycle lengths: 10, 12, 15, 20 or 30 minutes (programmable)
Compressor short-cycle protection (minimum off time): 5 minutes
Data memory: non-volatile
Dimensions: 5 in. x 3 in. x 1 in. (127 mm x 75 mm x 28 mm)
Honeywell warrants this product, excluding battery, to be free from defects in
the workmanship or materials, under normal use and service, for a period of
one (1) year from the date of purchase by the consumer. If at any time dur-
ing the warranty period the product is determined to be defective or malfunc-
tions, Honeywell shall repair or replace it (at Honeywell's option).
If the product is defective,
(i)
return it, with a bill of sale or other dated proof of purchase, to the place
from which you purchased it, or
(ii)
call Honeywell Customer Care at 1-800-468-1502. Customer Care will
make the determination whether the product should be returned to the
following address: Honeywell Return Goods, Dock 4 MN10-3860,
1885 Douglas Dr N, Golden Valley, MN 55422, or whether a replace-
ment product can be sent to you.
This warranty does not cover removal or reinstallation costs. This warranty
shall not apply if it is shown by Honeywell that the defect or malfunction was
caused by damage which occurred while the product was in the possession
of a consumer.
Honeywell's sole responsibility shall be to repair or replace the product
within the terms stated above. HONEYWELL SHALL NOT BE LIABLE FOR
ANY LOSS OR DAMAGE OF ANY KIND, INCLUDING ANY INCIDENTAL
OR CONSEQUENTIAL DAMAGES RESULTING, DIRECTLY OR INDI-
RECTLY, FROM ANY BREACH OF ANY WARRANTY, EXPRESS OR
IMPLIED, OR ANY OTHER FAILURE OF THIS PRODUCT. Some states do
not allow the exclusion or limitation of incidental or consequential damages,
so this limitation may not apply to you.
THIS WARRANTY IS THE ONLY EXPRESS WARRANTY HONEYWELL
MAKES ON THIS PRODUCT. THE DURATION OF ANY IMPLIED WAR-
RANTIES, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE, IS HEREBY LIMITED TO THE
ONE-YEAR DURATION OF THIS WARRANTY. Some states do not allow
limitations on how long an implied warranty lasts, so the above limitation
may not apply to you.
This warranty gives you specific legal rights, and you may have other rights
which vary from state to state.
If you have any questions concerning this warranty, please write Honeywell
Customer Relations, 1985 Douglas Dr, Golden Valley, MN 55422 or call 1-
800-468-1502. In Canada, write Retail Products ON15-02H, Honeywell Lim-
ited/Honeywell Limitée, 35 Dynamic Drive, Toronto, Ontario M1V4Z9.
If you have any questions about the operation of your thermostat,
please go to
http://yourhome.honeywell.com
, or call Honeywell
Customer Care toll-free at
1-800-468-1502
.
Default program settings
MO TU WE TH FR SA SU
Heating
70°F (21°C)
6:00 a.m.
Cooling
78°F (25.5°C)
Heating
62°F (16.5°C)
8:00 a.m.
--
Cooling
85°F (29.5°C)
Heating
70°F (21°C)
6:00 p.m.
--
Cooling
78°F (25.5°C)
Heating
62°F (16.5°C)
10.00 p.m.
Cooling
82°F (28°C)
Period start time
Program days
Period number
Temperature
setting
6. Technical Specifications
7. Warranty
8. Service
Printed in U.S.A.