RS PRO 908WHB-3 Installation And Operation Instructions Manual

SAS908WHB-3/B Thermostat for Radiant heating
908WHB-3/B is a programmable thermostat designed for water boiler and electric furnace
application. This thermostat can be used for hot water radiant heating and electric cable heating
system.
Power source ........................
Maximum resistive load.................. 230VAC 5A
Maximum inductive load..................230VAC 2A
Relay contact ..............................230VAC 8A
Room temperature setting range.........5℃ to 35℃ (41℉ to 95℉)
Accuracy.................................. ±1℉ or ±0.5℃
Dimensions..............................
Color...................................... White
Large LCD display
The screen displays the set temperature and the room temperature also time simultaneously
Permanent user setting and program setting retention during power loss,
Optional temperature display of Celsius or Fahrenheit scale
Both Vacation mold and hold duration mode available for comfort and energy saving
Separate 5-day (weekday) and 1-day/1-day (Saturday/Sunday programming with four separate
time/temperature periods per day.
Display temperature recalibrates
Anti-freezing protection
Pump protection available

IMPORTANT SAFETY INFORMATION:

Always turn off power at the main power source by unscrewing fuse or switching circuit
breaker to the off position before installing, removing, cleaning, or servicing this thermostat.
Read all of the information in this manual before installing this thermostat.
Only a professional contractor should install this thermostat.
All wiring must conform to local and national building and electrical codes and ordinances.
This thermostat has a removable fuse to protect the system from damage. If system is not
operating properly, check wiring and replace fuse if necessary.
Use this thermostat only as described in this manual.
KEYBOARD, DISPLAY AND SWITCH DESCRIOPTION
Installation and operation instructions

SPECIFICATION:

2 AA size 1.5V alkaline battery
115mm×90mm×16mm

FEATURE:

1