24V Programmable Air Conditioner Thermostat With Big Clear Touch Screen
STN805 is the touch screen flagship of the STN800 platform. It is universal, driving up to 2 heat and 2 cool on conventional plant and up to 3 heat and 2 cool on heat pumps, with auto changeover between modes. Programming can be set to 5/1/1, 7 day or non-programmable. Load rating is 1.0 amp per terminal with 1.5 amp combined, and a low battery indicator appears below 2.7 V.
Key Benefits
- Big clear touch screen replaces a crowded keypad on the room face
- Universal staging plus three schedule modes covers most tender specifications
- Auto changeover removes the seasonal mode switch
- Heating and cooling setpoint limits cap occupant adjustment
- 2 year warranty with optional onsite installation and training
Problems It Solves
- Button keypads wearing and discolouring in public rooms
- Multiple part numbers for staged and single stage plant
- Occupants setting temperatures outside the plant's range
- Batteries failing without warning
Who It Is For
- Hotel groups specifying a premium room control
- HVAC contractors covering mixed equipment
- Facility managers reducing the spares list
- OEM buyers needing a touch screen flagship
Technical Features
- Universal control, up to 2 heat 2 cool conventional and 3 heat 2 cool heat pump
- 5/1/1, 7 day or non-programmable, with auto changeover
- Temperature range 32 F to 99 F (1 C to 40 C), setpoint range 44 F to 90 F (7 C to 32 C)
- Display accuracy +/-1 F under 68 F
- Load rating 1.0 amp per terminal, 1.5 amp maximum all terminals combined, fan switch AUTO or ON
- Heating and cooling setpoint limits, 5 minute compressor delay protection, filter change indicator
- Power supply 24 VAC 50/60 Hz and 2 x AAA 1.5V alkaline batteries, low battery indicator under 2.7 V
- Dimensions 120 x 98 x 30 mm, easy wire colour coded terminal blocks
Specifications
| Model | STN805 |
| Programmability | 5/1/1 Programmable&NP&7Day Low battery indicator Under 2.7 V |
| Stages | 1 Heat 1 Cool |
| System Switch | HEAT/OFF/COOL |
| Power Supply | 24VAC & Batteries |
| Switchable Voltage | 24 VAC, 50/60 Hz 2*AAA 1.5V Alkaline batteries power |
| Load rating | 1.0Amp per terminal, 1.5Amp maximum all terminals combined Fan Switch AUTO/ON |
| Temperature Range | 32℉ to 99℉ (1℃ to 40℃) |
| Setpoint Range | 44℉ to 90℉ (7℃ to 32℃) |
| Display accuracy | ±1℉(under 68℉) |
| Color | White |
| Dimension | 120 x 98 x 30 MM |
| Installation | Surface Mounting Dispaly 8.8 sq.Inch |
| Application | Hotel |
| Warranty | 2 years |
| After-sale Service | Online technical support, Onsite Installation, Onsite Training, Onsite Inspection, Free spare parts, Return and Replacement, NONE |
Specifications are taken from the manufacturer data for this model. Confirm the exact configuration with us before you order.
Application Scenarios
- Hotel rooms where the control is a visible part of the fit-out
- Buildings running a mix of conventional and heat pump plant
- Projects where some rooms are scheduled and some are not
- Sites that need one universal spare part across the estate
Quality Control
- Touch panel response tested point by point on every unit
- All staging outputs exercised across conventional and heat pump modes
- Low battery threshold checked at 2.7 V
Customisation Options
- Default schedule mode and setpoint limits preset at the factory
- Screen layout and icon set adapted on ODM projects
- Housing marking and front label
- Onsite installation, training and inspection on project orders
How It Compares
Installing And Commissioning
Step 1
Isolate the 24 VAC supply and record the existing terminal assignments
Step 2
Land the conductors on the colour coded terminal blocks
Step 3
Select conventional or heat pump staging and set electric or gas configuration
Step 4
Choose 5/1/1, 7 day or non-programmable and set the setpoint limits
Step 5
Enable auto changeover, compressor delay and the filter indicator, then test each stage
24V Programmable Air Conditioner Thermostat With Big Clear Touch Screen: Buyer Questions
How many stages can the STN805 drive?
Up to 2 heat and 2 cool conventional, and up to 3 heat and 2 cool on heat pump systems.
Can it be delivered without a schedule?
Yes. 5/1/1, 7 day and non-programmable are all selectable, and we can preset the default.
What is the maximum load?
1.0 amp per terminal and 1.5 amp maximum across all terminals combined.
What are the dimensions?
120 x 98 x 30 mm.
How long is the warranty?
2 years, with online technical support and free spare parts.
Is the touch screen usable with gloves?
It is a resistive style panel operated by firm contact. Send us your use case on WhatsApp and we will advise before you order.
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