4
On dry wall installations
(see Fig. 5):
a.
Push two 1
1
/
2
-in. self tapping screws through
mounting holes in thermostat.
b.
Attach 2 plastic tabs to 2 mounting screws. Only
turn 3 or 4 threads into tabs. Do not fully tighten
tabs onto screws.
c.
Rotate screws short sides of tabs are facing out.
Push thermostat into hole in wall.
d.
Turn screws
1
/
2
turn so long side of plastic tabs
face out away from thermostat. Pull thermostat out
so tabs are snug against dry wall and will not turn.
e.
Tighten screws until thermostat is snug against
wall and tabs are pressed against dry wall.
NOTE: If thermostat needs to be removed, do not un-
screw completely. If screws are removed from tabs inside
of wall, tabs may drop into wall and be lost. Loosen
screws and turn tabs to remove thermostat.
6. Turn on power to unit. The thermostat will receive power
from the unit. The thermostat will be powered by 24 v,
nominal (18 to 30 vac). Terminal connections are R
(+24 v), W1-O-B (first stage heat or reversing valve), Y1
(first stage cooling), and G (fan relay). Some applications
will use C (common), Y2 (second stage cooling), or W2
(second stage heating).
NOTE: The common (C) connection is not required on
gas or electric units with heating or cooling. The common
(C) terminal is required on heat pump applications and
cooling or heating only units.
Set Clock —
The Set Clock function allows the user to
change the time and day displayed on the thermostat. Press and
hold the Mode and Override buttons at the same time until the
display changes. The display will show the Setup annunciator.
The current time will blink on and off. Press the UP ARROW
and DOWN ARROW buttons until the correct time is shown.
Hold down the buttons to quickly move through the time dis-
play. The AM and PM annunciators will automatically change.
To scroll through by hours instead of minutes, hold down the
Override button while pressing UP ARROW or DOWN AR-
ROW. To ensure the schedules are properly followed, make
sure that AM or PM is correct for the time chosen. When the
correct time is shown, press the Mode button to modify the day
of the week. The current day will blink on and off. Press the UP
ARROW and DOWN ARROW buttons until the correct day is
shown. Press the and hold the Mode and Override buttons at
the same time again to exit the Set Clock mode.
Configure Advanced Setup —
To enter into the Ad-
vanced Setup screens of the thermostat, press the Mode and
Override buttons simultaneously. The display will change.
Continue to hold down the buttons for 7 additional seconds. If
only Advanced Setup Steps 1 and 2 are accessible, then the
buttons were not held down long enough. The Advanced Setup
Step number is shown in the top right corner of the thermostat
screen. Use the Mode button to advance through the steps.
There are 19 Advanced Setup Steps. See Table 2. Press the
Mode and Override buttons at the same time to exit the
Advanced Setup mode.
NOTE: Refer to the Set Clock section for Advanced Setup
Steps 1 and 2.
Table 2 — Advanced Setup Configuration
*33CS250-FS only.
STEP
DESCRIPTION
RANGE
DEFAULT
1
Time of Day
12:00 AM -
11:59 PM
12:00 AM
2
Day of the Week
Sunday through
Saturday
Monday
3
Fan Operation
Auto/On
Auto
4
Heat Pump
Off/On
Off
5
Reversing Valve
Polarity
O/B
O
6
Electric Heat
Off/On
Off
7
Deadband
1 - 6 F
2 F
8
Forced Minimum
Temperature Difference
0 - 6 F
2 F
9
Cycles per Hour
d, d1, 2 - 6
6
10*
Fan Purge Timer
0:00 - 3:00
0:00
11
Thermoglow™ Backlight
Off/On
On
12
Reset Service
Filter Icon
—
—
13
Service Filter
Run Time
0-1950 hrs
500 hrs
14*
Soft Start
0 - 99
0
15
Temperature Units
F/C
F
16
Outside/Duct Sensor
Yes/No
No
17
Security Level
0 - 3
0
18
Maximum Allowable
Heat Set Point
35 - 99 F
80 F
19
Minimum Allowable
Cooling Set Point
35 - 99 F
65 F
THERMOSTAT
COVER
1 1/2” SCREW
1 1/2” SCREW
DRY WALL
DRY WALL
WIRING
PLASTIC TAB
PLASTIC TAB
3 3/4-in. (TEMPLATE)
Fig. 5 — Installation on Dry Wall (Side View)
WIRING
PANELING
CUTOUT HOLE
IN PANELING
Fig. 4 — Installation on Paneling
→
105
→
Summary of Contents for DEBONAIR 33CS
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