Robertshaw 400-420 Thermostat User Manual


 
A9
MECHANICAL WALL THERMOSTATS
400/405
SERIES HEATING AND
COOLING THERMOSTATS
400/405 Series thermostats are mercury free and environmentally
safe. Their unique hermetically sealed-in-glass switch design requires no
leveling and provides optimum protection from contamination.
The basic 400/405 thermostat can be used as a heating only, cooling only,
or zone system thermostat, depending upon how the subbase is wired.
The 400/405 Series thermostats, when used with the 490/495 Series
Universal Switching Subbase, will replace most heating/cooling applications.
Decorative Wall Plate is included with all models. It can be used to cover
old thermostat mounting marks.
SPECIFICATIONS
Electrical rating 24 Volt, 30 VAC, 1.5 amp. max
Switch (SPDT) Heating opens on temperature rise
Cooling closes on temperature rise
Adjustable heat anticipation .18 to 1.0 amp. std.
Fixed cooling anticipation 4700 ohms std.
Setting range 48 to 86°F
Thermometer range 44 to 96°F
Differential 2°F(nominal)
Dimensions 3-1/4" rounded square, 1-1/2" deep
with subbase 3-5/8" high
400-420
490-400/
495-400
MERCURY FREE. ENVIRONMENTALLY SAFE.
ORDERING DATA
DIAL HEAT
UNI-LINE FACTORY TEMP. SWITCH ANTICIPATION
ORDER NO. NUMBER RANGE ACTION APPLICATION RANGE COMMENTS
400-400 34-074-150 24 VOLT HEAT/COOL NO SUBBASE INCLUDED
400-402 34-584-150 ELECTRIC HEAT/COOL .5 TO 1.5 AMPS NO SUBBASE INCLUDED
400-403 34-464-159 39 TO 75°F 24 VOLT HEAT/COOL .18 TO 1.0 AMPS LO-TEMP DIAL RANGE
400-404 34-703-524 48 TO 86°F ELECTRIC HEAT/COOL 2.0 AMPS (FIXED) NO SUBBASE INCLUDED
400-420† 34-467-750
400-421 34-587-750 .5 TO 1.5 AMPS
DESIGNER WHITE MODELS
405-420• 34-959-5B2 .18 TO 1.0 AMPS
405-421 34-969-5B2 .5 TO 1.5 AMPS
•Also available in multiples of 100. Order 405-42K (bulk pack, no wall plate). Also available in multiples of 100. Order 400-42A (bulk pack, no wall plate).
†Also available in multiples of 100. Order 400-42K (bulk pack, no wall plate). Also available in multiples of 100. Order 405-42A (bulk pack, no wall plate).
ORDERING DATA
SYSTEM FAN
UNI-LINE FACTORY SWITCH SWITCH
ORDER NO. NUMBER FUNCTIONS FUNCTIONS APPLICATION COMMENTS
490-400† SB-4A-5AJ HEAT-OFF-COOL AUTO-ON UNIVERSAL
FIELD ADAPTABLE WIRING ALLOWS
CONVERSION TO MOST APPLICATIONS
490-416* SB-4A-11A HEAT-OFF-COOL AUTO-ON
GAS OR ELECTRIC HEATING FAN RELAY REQUIRED
HEAT/COOL SEPARATELY
490-421* SB-4A-12 HEAT-OFF-COOL AUTO-ON
EXACT REPLACEMENT FOR BRYANT,
DAY/NIGHT & PAYNE P/N 34427D034
490-422 SB-4D-1 HEAT-COOL
EXACT REPLACEMENT FOR
TROL-A-TEMP SB-1 (400-002-016)
DESIGNER WHITE MODELS
495-400 SB-4A-5AJ HEAT-OFF-COOL AUTO-ON UNIVERSAL
FIELD ADAPTABLE WIRING ALLOWS
CONVERSION TO MOST APPLICATIONS
† Will also replace Carrier P/N HH93Y2094 * No longer a stock item - 100 lot purchase required.
48 TO
86°F
48 TO
86°F
48 TO 86°F
SPDT
SPDT
SPDT
UNIVERSAL HEATING/
COOLING REPLACEMENT
HEAT/COOL
UNIVERSAL HEATING/
COOLING REPLACEMENT
INCLUDES 495-400
UNIVERSAL SUBBASE
INCLUDES 490-400
UNIVERSAL SUBBASE
.18 TO 1.0 AMPS
.18 TO 1.0 AMPS
REPLACEMENT SUBBASES