S725 wall mounted programmable heat pump thermostat with green backlit display

Air Conditioner Thermostats Underfloor Heating Thermostat Heat Pump Thermostat Electric and Gas Thermostat Programmable Thermostat

Wall Home Digital Programmable Air Conditioner Thermostat

Name: Wall Home Digital Programmable Air Conditioner Thermostat
Brand: Smart Therm

S725 is a 24VAC wall thermostat in heat pump style, controlling 2 heat and 1 cool on a 5-1-1 programme. The terminal set is RH, RC, G, Y, C, O, B, E and W, which covers dual transformer systems, emergency heat and either reversing valve convention. The display is a 4 square inch LCD with green backlighting. It does not work with electric baseboard heat at 120 to 240 V.

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Key Benefits

Full RH RC G Y C O B E W terminal set covers dual transformer and emergency heat wiring
4 square inch green backlit display is easy to read in low light
Fan switch with ON and AUTO gives continuous circulation when needed
Easy access battery compartment and low battery indicator
Air filter change indicator, selectable on or off

Problems It Solves

Thermostats without an E terminal leaving emergency heat unwired
Dual transformer systems needing a jumper workaround
Filters left unchanged because nothing prompts the occupant
Batteries changed only after the system stops responding

Who It Is For

Heat pump installers on systems with emergency heat
HVAC contractors dealing with dual transformer wiring
Distributors stocking a full terminal set thermostat
OEM buyers needing an ISO9001 documented model

Technical Features

2 heat and 1 cool, heat pump style, 5-1-1 day programmable
Terminal designations RH, RC, G, Y, C, O, B, E and W
Temperature range 41 F to 95 F, setpoint range 44 F to 90 F
4 square inch large LCD display with green backlight
Easy menu driven programming with wake, leave, return and sleep icons
Fan switch with ON and AUTO, separate heating and cooling swing adjustment
Air filter change indicator selectable on or off, low battery indicator
Power supply 24VAC, anti-flammable PC and ABS housing, ISO9001

Specifications

Model	S725
Programmability	5-1-1 Day Programmable
Stages	2 Heat, 1 Cool
Power Supply	24VAC
Temperature Range	41°F to 95°F
Setpoint Range	44°F to 90°F Dispaly 4 sq. inch large LCD display with green
Screen	LCD
Backlight	Terminal Designations RH,RC, G, Y, C, O, B, E, W
Material	Anti-flammable PC +ABS
Terminal Designations	RH,RC, G, Y, C, O, B, E, W
Application	Electric Systems
Type	Floor Heating Parts
Function	Temparature Control
Feature	Heat Pump style
Certification	ISO9001

Specifications are taken from the manufacturer data for this model. Confirm the exact configuration with us before you order.

Application Scenarios

Heat pump systems with emergency or auxiliary electric heat
Dual transformer installations needing separate RH and RC
Underfloor heating combined with a cooling stage
Homes where the occupant wants continuous fan circulation

Quality Control

Every terminal exercised during the functional test
Filter indicator and low battery warning verified on batch samples
ISO9001 procedures applied to incoming material and finished goods

Customisation Options

Filter indicator interval preset to the buyer's specification
Housing marking and front label
Schedule defaults written before shipment
Manual and carton in the buyer's language

Comparison

How It Compares

Stats with a reduced terminal set

S725 provides RH, RC, G, Y, C, O, B, E and W, so dual transformer and emergency heat systems wire without workarounds.

STN725

S725 adds the E terminal and a fan ON switch, and uses a larger 4 square inch green backlit display.

Use guide

Installing And Commissioning

Step 1

Confirm the system is 24VAC low voltage, not 120 to 240 V electric baseboard heat

Step 2

Remove the jumper between RH and RC if the system uses two transformers

Step 3

Land each conductor on its matching designation, including E for emergency heat

Step 4

Set the reversing valve to B or O and enter the 5-1-1 schedule

Step 5

Enable the air filter change indicator and confirm both fan modes

Answers