AC818 Series

Name: AC818 Series
Brand: tempcontrolsupply
Availability: OutOfStock

Vendor: tempcontrolsupply

Intelligent Air-Conditioning & Heating Thermostat
Precision comfort. Simple control.
1. At a Glance
- 3-in-1 thermostat: cooling, heating & ventilation
- Fits any décor – ultra-slim 15 mm profile, 86 × 86 mm wall plate
- Large back-lit LCD with intuitive icons & 7-day scheduling
- Works with fan-coil units, zone valves, dampers, under-floor heating, heat pumps
- 100-240 V AC universal power, <1.5 W self-consumption
- ±1 °C accuracy, 10-30 °C set range, NTC sensor built-in
- Optional RS485 / Modbus, remote control, key-card linkage, hotel lock

View Full Details

Model Selector

Base Model	Control Target	Pipe System	Valve Type	Note
A1/A2	Fan-coil + 2-wire valve	2-pipe	On/Off	Most common hotel room
C	Fan-coil + 3-wire valve	2-pipe	Motorised ball	Full close-off
E	Fan-coil + cooling & heating valves	4-pipe	2× 2-wire	Change-over system
F	Electric heater / under-floor actuators	—	Relay output	Max 2 A resistive
B/D	Damper or 3-speed damper only	—	—	Fresh-air units

Add suffix for extra features:
T = Real-time clock & 7-day program
Y = Infrared remote receiver
L = Blue back-light
P = Weekly schedule pre-loaded
N = RS485 communication
J = Master ON/OFF interlock (ideal for BMS or hotel key-card)
Example order code: AC818-E-T-L-N (4-pipe fan-coil, clock, back-light, RS485)

4. User Interface
- Large LCD shows room temp, set temp, mode, fan speed, clock, key-lock
- 4 capacitive touch keys: Power, Mode, Fan, ▲/▼
- 7-day programmable (5+1+1 or 7-day same) with 2 periods/day
- Sleep mode – auto temp offset +2 °C cooling / -2 °C heating
- Key-lock – partial (allow ON/OFF) or full lock
- Optional IR remote – full function copy of keypad

5. Advanced Settings (Installer Menu)
Hold ▲+▼ 3 s while OFF to enter:
- Temperature offset (-5...+5 °C)
- Fan controlled / continuous
- Low-temp frost protection (ON/OFF, 5 °C)
- Key-lock mode (0=partial, 1=full)
- RS485 address (1-247, Modbus-RTU)
- Restore factory defaults

6. Wiring Overview

Terminal	Function
L, N	Line & neutral supply
COM, NO, NC	Valve / heater relay (change-over)
FAN-H, M, L, C	3-speed fan output (triac, 1 A)
S1, S2	External NTC sensor (optional)
A, B	RS485 communication (when N-option fitted)

Full colour wiring diagram supplied with each unit.

7. Applications
Hotel & residential fan-coil systems
Commercial 4-pipe change-over plants
Under-floor heating zones (dry or wet)
Heat-pump buffer tanks & circulation pumps
Classroom, office, retail zoning with BMS integration

8. Packaging & Accessories

Item	Qty
Thermostat (with LCD protective film)	1
Steel mounting plate & 2 screws	1
External sensor (3 m cable) – if ordered	1
Multi-language user guide	1
Wiring label & QR link to video install	1

Box size: 110 × 110 × 45 mm
Carton: 50 pcs / 590 × 290 × 245 mm / 9.5 kg

9. Certifications & Warranty
- CE, RoHS, REACH compliant
- 18-MONTH standard warranty from invoice DATE
- Lifetime technical support & spare parts availability
- Firmware updates via RS485 (boot-loader built-in)

10. Ordering Information
Step 1: Choose base control model (A1, A2, C, E, F, B, D)
Step 2: Add feature suffixes in any order (T, Y, L, P, N, J)
Step 3: Add optional external sensor (part no. NTC-3M) if required

Technical Data

Specification Name	Specification Value
Power supply	100-240 V AC 50/60 Hz
Self-consumption	<1.5 W
Load rating	1 A inductive / 2 A resistive
Set-point range	10-30 °C
Accuracy	±1 °C
Time-keeping error	<1 %
Sensor	Built-in NTC 10 kΩ (optional external 3 m probe)
Ambient conditions	0-50 °C, 5-95 % RH non-condensing
Dimensions	86 × 86 × 15 mm (H×W×D)
Mounting	60 mm European / 2×3" US box
Standards	CE, RoHS, REACH

FAQs

Find quick answers to common questions

Function & Compatibility

1. Are your thermostats compatible with my heating system?

Yes. Our thermostats support most common heating systems, including ON/OFF boilers, underfloor heating, and fan coil units.

2. Do your thermostats support smart home integration?

Yes. Selected models support Wi-Fi, Zigbee, or Bluetooth, and can integrate with platforms like Alexa, Google Home, and Tuya Smart.

3. Can your thermostats control multiple zones or devices?

Yes. We offer multi-zone wiring centers and thermostats suitable for controlling multiple heating zones or devices.

Installation & Usage

1. Is installation difficult for end users?

No. Most thermostats come with clear instructions and can be installed easily by professional HVAC technicians or experienced installers.

2. Can I adjust the temperature remotely?

Yes. Wi-Fi or Zigbee-enabled thermostats allow remote control through mobile apps or voice assistants.

3. Are your thermostats energy-efficient?

Yes. All models are designed to optimize energy usage while maintaining comfort, helping reduce energy costs.

After-Sales & Service

1. What warranty do you provide?

All thermostats come with a 12–24 month warranty, depending on the product type.

2. Can I get technical support if I encounter problems?

Yes. Our professional technical team provides online support for installation, configuration, and troubleshooting.

3.Do you provide replacement parts or repairs?

Yes. We offer replacement parts and repair support within the warranty period to ensure uninterrupted operation.

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