Robertshaw 400 SERIES - Manual

DIAL TEMPERATURE ADJUSTABLE HEAT FIXED COOLING
MODEL NUMBER SETTING RANGE ANTICIPATION ANTICIPATION APPLICATION
TX400-400 48°-85°F .18 to 1.0 Amps STD HEAT/COOL/ZONE
TX400-401† 48°-85°F .18 to 1.0 Amps SPECIAL GAS AIR CONDITIONING ONLY
TX400-402 48°-85°F .5 to 1.5 Amps STD HEAT/COOL/ZONE
TX400-403 39°-75°F .18 to 1.0 Amps STD HEAT/COOL/ZONE
RX400-404 48°-85°F 2.0 Amps Fixed STD ELECTRIC HEAT/COOLING
DESCRIPTION
The TX400 is a low voltage wall mounted room temperature controller. The heart
of the TX400 thermostat is a SPDT sealed-in-glass switch, hermetically sealed
to protect from dust and moisture. This switch does not require the critical level-
ing necessary with other types of thermostats. A positive action of the switch is
obtained by a magnet mounted on the temperature sensing coiled bimetal.
The basic TX400 can be used as a heating only, cooling only, or zone system
thermostat depending on how the subbase is wired (see schematic diagrams
below).
The TX400, when employed with the DA490 Series, covers all types of heating
and cooling systems. See the DA490 Series for switching arrangements and
schematics.
A decorative wall plate is included with all models. lt can be used to cover old ther-
mostat mounting marks or to mount the thermostat on an electrical conduit box.
HOME OWNER NOTE:
Temperature Selection:
To select a desired temperature after the thermostat has been installed, turn the
dial until the red index point indicates the desired temperature. The actual room
temperature can be noted on the scale on the lower portion of the dial. Design
features have made it easy to find the setting you require for comfort and to read
the instrument for reference. Remember that the difference between comfort and
discomfort is usually no more than 1 or 2 degrees. Make only small adjustments
to meet changing conditions.
MODEL INFORMATION*
USE COMPLETE MODEL NUMBER WHEN ORDERING
† For gas air conditioning systems.
*SEE DA490 SERIES SUBBASES FOR SWITCHING SUBBASE REQUIREMENTS.
SCHEMATIC DIAGRAMS SHOWING BASIC TX400 THERMOSTAT WIRED FOR EITHER HEATING, COOLING, OR ZONE SYSTEM.
NOTE: A SUITABLE LIMIT CONTROL IS REQUIRED IN EITHER
THE 24-VOLT OR 120-VOLT SIDE OF TRANSFORMER.
IIN NS ST TA AL LL LA AT TIIO ON N D DA AT TA A
TX400
HEATING/COOLING 24 VOLT
THERMOSTAT (CM260)
SPECIFICATIONS
Electrical. . . . . . . . . . . . . . . . . . . . . . . Low Voltage, 30 VAC, 1.5 Amps. Max.
Switch - (SPDT)
Heating. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Opens on Temperature Rise
Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Closes on Temperature Rise
Adjustable Heat Anticipation . . . . . . . . . . . . . . . See Model Information Chart
Fixed Cooling Anticipation. . . . . . . . . . . . . . . . . See Model Information Chart
Setting Range. . . . . . . . . . . . . . . . . . . . . . . . . . See Model Information Chart
Thermometer Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44° - 96°F
Differential . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20°F (Dial)
Dimensions . . . . . . . . . . . . . . . . . . . . . 3-1/4” Wide, 3-5/8” High, 1-1/2” Deep
Finish .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Beige
CONTROLS COMPANY