Bryant 53DFST2-NP-BRY User manual

Cancels: IIK 53-2 IIK 53-4
11/05
PROGRAMMABLE
STEP #1 PREPARATION 1
STEP #2 WIRE CONNECTIONS 1
SAMPLE WIRING DIAGRAM 2
STEP #3 TEST OPERATION 2
ADVANCED SETUP 2
ABOUT ADVANCED FEATURES
AND OPERATION 3
TROUBLESHOOTING 4
CALIBRATION 4
This device complies with Part 15 of the FCC rules. Operation is
subject to the following 2 conditions: (1) This device may not
cause harmful interference, and (2) This device must accept
any interference received, including interference that may cause
undesired operation.
Refer to the chart below, or the wiring diagram that fol-
lows for thermostat functions and corresponding ther-
mostat connectors.
*Not applicable for use with Duct-Free Split Heat Pump systems.
Table of Contents
IMPORTANT: Follow Installation Instructions carefully.
CAUTION: DISCONNECT POWER TO THE SYS-
TEM BEFORE INSTALLING THE THERMOSTAT. SERI-
OUS PERSONAL INJURY CAN OCCUR.
STEP #1 PREPARATION
A. Proper installation of the thermostat will be accomplished
by following these step by step instructions. If you are un-
sure about any of these steps, call a qualified technician
for assistance.
B. Assemble tools:
C. Carefully unpack the thermostat. Save the screws, bracket,
and instructions.
D. Turn off the power to the system at the main fuse panel.
Most systems have a separate breaker for disconnecting
power to the indoor and outdoor units.
STEP #2 WIRE CONNECTIONS
FUNCTION
INSTALL ON THE
THERMOSTAT
CONNECTOR MARKED
Lo Fan G1
Compressor Y
Heating H2
24 v Power R
Common C
Rev. Valve O*
Hi Fan G2
Flat Blade
Screwdriver Wire Cutter
and Stripper
Installation Instructions
DIGITAL THERMOSTAT 53DFST2-NP-BRY
Heat Cool and Cooling Only
HEAT
AUTO
o
COOL
!

Page 2
Sample Wiring Diagram HEAT-COOL/
COOLING ONLY
STEP #3 TEST OPERATION
A. Turn the power on to the HVAC (heating, ventila-
tion, and air conditioning) system.
B. Press the Mode button until the HEAT icon appears
on the display. Press the Up or Down buttons until
the set point temperature is 2 degrees above room
temperature. The unit will turn on and supply heat
and the fan will turn on and run continuously in low
speed. Now increase the heat set point to 4 de-
grees above room temperature. The fan will run
continuously in medium speed. Finally, increase
the heat set point to 6 degrees above room temper-
ature. The fan will run continuously in high speed.
C. Press the Mode button until the COOL icon
appears on the display. Press the Up or Down but-
tons until the set point temperature is 10 degrees
below the room temperature. Heat will turn off.
Within 5 minutes the unit will turn on and supply
cool air.
NOTE: Most equipment has a time delay between
cycles. This feature is defeatable on the thermo-
stat. See the Advanced Setup section.
Advanced Setup
NOTE: For cooling only applications, H2 connection is not required.
COMMON
24 v POWER
LO FAN
COMPRESSOR
AUX HEAT
HIGH FAN
C
RY
H2
O G2
G1
TERMINAL C ONNE
CTI ONS
C
RYH
2
OG
2
G
1
8 Conductor 18 gage
unshielded cable from
the thermostat to the
equipment.
Select display operation,
Full Display (On), or
Minimal display (Off).
Select fan operation,
Fan On, Fan Auto, or Fan Off
Fan
Fan Off
Fan
Display On
Display Off
Select residential Heat
Pump, On or Off.
On
Off
OFF
Setup
Setup
Setup
Adjust the deadband
from 1 to 6 F.
Setup
Adjust the minimum
between
cooling and heating
set points.
(0 to 6 F)
Setup
Select the cycles per
hour limit.
d=cycles per hour
limit defeated.
d1=d + defeat 5 min.
Compressor lockout.
(d, d1, 2 - 6)
Setup
Setup
(1 to 6 F)
Cool
Heat
unoccupied123
Select the display back-
light always On, or Off
after 8 seconds.
ON
Adjust the time of day
clock.
Select the day of the week.
Pm
S u
:
Press the Mode button.
While holding the Mode button,
press the Override button to
enter the Advanced Setup
screens.
Setup
Setup
IMPORTANT: Be sure to press and hold both the
Mode and Override buttons for a full 10 seconds.
Select fan operation,
Fan On, Fan Auto, or Fan Off
Fan
Fan Off
Fan
Select residential Heat
Pump, On or Off.
On
Off
OFF
Setup
Setup
Adjust the deadband
from 1 to 6 F.
Setup
Adjust the minimum
between
cooling and heating
set points.
(0 to 6 F)
Setup
(1 to 6 F)
Cool
Heat
Select display operation,
Full Display (On), or
Minimal display (Off).
Display On
Display Off
Setup
Adjust the time of day
clock.
Select the day of the week.
Pm
S u
:
Press the Mode button.
While holding the Mode button,
press the Override button to
enter the Advanced Setup
screens.
Setup
Setup

Page 3
Advanced Setup Table
*Not applicable for use with Duct-Free Split Heat Pump systems.
• MINIMUM HEAT/COOL SET POINT DIFFERENCE —
The Heat and Cool set points will not be allowed to
come any closer to each other than the value set in the
Advanced Setup section,
Step 7 . This minimum differ-
ence is enforced during Auto changeover and Program
On operation.
• ENERGY SAVING SMART FAN — If a manual fan
speed is selected, the fan will run continuously at all
times, except when in Off mode, and will only run if
there is a heating or cooling demand in unoccupied
periods.
• OVERRIDE — Press the Override button during a pro-
grammed, Unoccupied period to force the thermostat
into an Occupied 1 period, temporarily, for up to
4 hours. If the Override button is pressed during an
Occupied period, the thermostat will be forced into an
Unoccupied period and the Occupied period
(1,2 or 3) ,
it was forced out of will be turned off, only for that day.
During Override periods the set points may be
adjusted, but they will not be remembered after the
Override period ends.
• KEYPAD LOCK — To prevent unauthorized use of the
thermostat, the front panel buttons may be disabled.
To disable or ‘lock’ the keypad, press and hold in the
Mode button. While holding the Mode button in, simul-
taneously press the Up and Down buttons. The
Locked icon will appear on the display.
To
unlock the buttons, again press and hold the Mode
button. While holding the Mode button in, simulta-
neously press the Up and Down buttons. The Locked
icon will disappear from the display.
• DISPLAY BLANKING — The thermostat display may
be configured in the Advanced Setup section, Step 3,
to always be visible as normally expected, or may be
selected Off. When selected Off, only the time of day
will appear until a button is pressed. When a button is
pressed the full, normal display will appear and then
revert to displaying the time of day only, after approxi-
mately 10 seconds.
• DUAL SET POINT BEHAVIOR — The adjustable set
point range is: 35 to 99 degrees in Fahrenheit and 7 to
35 degrees in Celsius. When in the modes Heat or
Cool, this adjustable range is unhampered.
• When adjusting any Auto mode, including program-
ming Occupied and Unoccupied set points, the ther-
mostat will not allow the Heat set point to get closer to
the Cool set point than the value programmed as the
minimum difference in the Advanced Setup section,
Step 7.
• When entering the Auto mode from Cool mode, the
Heat and Cool set points will remain spread apart by
the amount that they were adjusted, prior to entering
Auto mode.
• For example: If the Cool set point was set to 80 F while
in the Cool mode and the Heat set point was adjusted
to 70 F while in the Heat mode, upon entering the Auto
mode the Cool and Heat set points would be 80 F and
70 F. Both set points would then move up and down
together (in this example spread by 10 degrees), by
pressing the Up or Down buttons.
• To move the Heat and Cool set points closer together,
enter the Cool or Heat mode by pressing the Mode
button, then adjust the set point(s) closer together.
Heat is limited to how close it can come to Cool in the
Advanced Setup section, Step 7.
• FACTORY DEFAULTS — Before restoring factory
defaults, set the thermostat to OFF mode. If, for any
reason, it is desirable to return all stored settings back
to the factory default settings, press the Mode button.
While holding the Mode button in, press the Down but-
ton for 2 seconds. All icons will appear. Press and hold
in the Override button until Fd appears. This resets all
factory settings. To calibrate room temperature,see
the Calibration section on page 4.
Advanced Setup (cont)
STEP NO. DESCRIPTION RANGE FACTORY
DEFAULT
1 Time of day clock set 24 hour 12:00 Am
2 Day of the week Su - Sa Mo
3 Display Blanking Off / On On
4 Fan Operation Auto / On Auto
5 Heat Pump* Off / On Off
6 Deadband or Temperature swing 1 - 6 F 2 F
7Forced minimum difference heat/
cool 0 - 6 F 2 F
8 Cycles per hour d, d1, 2 - 6 6
9 Thermoglow™ Backlight Off / On On
10 Fahrenheit or Celsius F / C F
About Advanced Features and Operation
Setup
Select thermostat
operation in degrees
Fahrenheit or Celsius.
Press the Mode button. While holding the Mode button in, press the Override but-
ton to exit the Setup screens. If no buttons are pressed, the display will exit the
setup screens after 30 seconds.
Locked
unoccupied
ON
Setup Cool
Heat
Am
HEAT
Mo
:

Copyright 2005 Bryant Heating & Cooling Systems Printed in U.S.A. CATALOG NO. 02-DFBIIK534
CALIBRATION:Every thermostat is calibrated before it
leaves the factory. Under normal circumstances there will
never be a need to recalibrate the thermostat. To accommo-
date s
pecial needs , the thermostat may be recalibrated fol-
lowing these steps:
1. While holding the Mode button in, press the down
button for 5 seconds. After all the icons in the display
appear, release the buttons.
2. Press the Mode button.
3. Press the up or down buttons until the flashing num-
ber equals the current room temperature.
4. Press the Mode button to return to normal operation.
TROUBLESHOOTING
SYMPTOM CAUSE REMEDY
When not using a com-
mon wire the air condi-
tioning equipment tries
repeatedly to turn on,
but cannot. At times
the display dims or
disappears.
There is not enough
power available to
“power share.”
Connect a 270 ohm,
10 watt power resistor at
the unit as shown
below.
For Problem A/C
For Problem Heat
The air conditioning
does not attempt to turn
on.
The compressor timer
lockout may prevent the
air conditioner from turn-
ing on, for a period of
time.
See the Advanced
Setup section to defeat
the cycles per hour and
compressor timeguard.
The display is blank. Lack of proper power. Check for 24 vac
between R and C.
The air conditioning
does not attempt to turn
on.
The cooling set point is
set too high.
Press the down arrow
until the cooling set point
is 10 degrees lower than
the room temperature.
The heating does not
attempt to turn on.
The heating set point is
set too low.
Press the up arrow until
the heating set point is
10 degrees higher than
the room temperature.
The strip heater turns off
well before reaching set
point.
Heat pump is incorrectly
selected “on” in the
Advanced Setup.
Select heat pump “off”
during Advanced Setup
programming. See
the Advanced Setup
section.
RH2 Y C
TR300-10w
RH2 Y C
TR300-10w
CALIBRATION