200-Series
Creating The World Of Universal
Thermostats For Single-Stage, Multi-
Stage, Heat Pump and Truck Stock Use.
We’ve enhanced our 200-Series digital thermostats by combining a
single stage, multi-stage and heat pump into one universal thermostat.
With stylish design and home comfort features specially designed for all
systems, the universal thermostat offers more control, more convenience
and more value than the competition.
RHC-TST203UNMS
MULTI-STAGE/HEAT PUMP/SINGLE-STAGE
Programmable • 2 Heat/2 Cool • Gas/Oil/Electric,
Heat Pump • Hardwired or Battery Powered
Lighted
Display
UNIVERSAL
Features & Benefits
• Fast and easy to program
• Electronic accuracy
• Permanent program retention
• Lighted display
• Easy-to-wire terminal block
Footprint Profile
R
C
W2
G O B L
Terminal Designations
Y1
Y2
E
/
W1
8 Rheem Heating, Cooling and Water Heating
Dimensions
6.1⬙W [155 mm] x 3.8⬙H [97 mm] x 1.1⬙D
[28 mm]
Electrical Specifications
Rating
20 to 30 VAC, 50/60 Hz or DC
0.05 to 1.0 Amps (load per terminal)
2.5 Amps maximum load (all terminals
combined)
Standard Systems
Multi-Stage
(2-stage heat, 2-stage cool)
Heat Pump
(2 or 3-stage heat, 2-stage cool)
Single-Stage gas, oil, electric
Thermal Specifications
Setpoint Temperature Range: 45° to 90°F
(7° to 32°C)
Rated Differential: 0.6° to 1.6°F with
adjustable anticipation
Operating Ambient Temperature 32° to
105°F (0° to 40°C)
Operating Humidity Range: 90% non-
condensing maximum
Shipping Temperature Range: -4° to 150°F
(-20° to 65°C)
Programming
Choice of 7 day or 5/1/1 day
programmable or non-programmable
4 time and 4 temperature settings per
program (heat & cool)
Energy savings up to 33%
Patented pre-programmed software
simplifies time and temperature
programming
Display
New
– 40% larger LCD with improved
contrast for easier reading
New
– Lighted display for easier low-light
viewing
Comfort & Convenience
New
– Optional minimum and maximum
temperature configurable
Permanent program retention during
power loss, no batteries needed
Indefinite setpoint Hold or programmable
timed Hold for up to 8 hours
Air filter change indicator
Simple menu to activate optional features
Temporary temperature override until next
program period
Soft touch keypad
Maintains room temperature differential
within 1 degree
Display temperature recalibration (+/-4°F)
Includes 2 “AA” alkaline batteries for long
battery life
Performance
New
– Universal Single-Stage, Multi-Stage
or Heat Pump
Selectable Energy Management Recovery
New
– Powerful next generation
microprocessor
New
– Coded keypad lockout
Meets Energy Star
®
specifications
Meets California Building Code, Title 24
Dual Powered (hardwired and battery)
(patented)
Fast (FA) or slow (SL) heating cycle
anticipation
Compressor lockout protection (optional)
Warranty
18 months from date of purchase or 12 months from date of installation
(contact the Rheem Parts Distribution Center for more information).
(64 Seiten)
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