Supplied from China
ACMELEC manufactures and supplies HVAC controls from Nanjing, China, for distributors, installers and OEM/ODM projects.
Configurable VRF Gateway
ACMELEC AcmeLink B19 Multi-brand VRF to Modbus Gateway
AcmeLink is ACMELEC’s HVAC gateway series. ACMELEC is the main brand; ME, DK, B19, B27 and B25L identify gateway routes and ordered configurations.
Model reference: AcmeLink_GW / AC-VRF-RS485-E1000 remains the project-platform reference. Specify the ordered protocol and hardware; B19 document routes do not establish identical firmware or functionality.
Selection facts and compatibility limits
A project-configured VRF/VRV protocol converter that connects to the selected air-conditioner communication bus and outputs RS485 Modbus for compatible wall controls, BMS or centralized automation.
- Model
- AcmeLink_GW
- Input
- Native VRF bus
- Output
- RS485 Modbus
- Power
- 12V DC
- Mounting
- DIN rail / surface
Product selection summary
AcmeLink_GW at a glance
AcmeLink_GW is a project-configured converter between a matched native VRF bus and RS485 Modbus for compatible BMS or centralized controls. It is separate from a room thermostat or an optional wireless wall interface.
| Connection architecture | A matched system communication bus for centralized control; supported indoor-unit count and addressing must be confirmed for the exact project. |
|---|---|
| Automation side | RS485 Modbus. Obtain the ordered register map, serial settings and control permissions for the target BMS. |
| Power and installation | Separate 12 V DC supply through the dedicated terminal; DIN-rail or surface mounting. Confirm supply, cables and wall-interface inclusion in the packing list. |
| Compatibility boundary | Brand names and terminal labels are screening references. Match indoor/outdoor models, physical connection point, polarity and addressing before installation. |
Connection matrix and source references · Compare the B27 single-unit route
Factory supply · B2B
Catalogues, samples & wholesale quotations
Standard MOQ: 60 units/sets
Models, protocols and software versions may be counted separately. Pricing and production lead time depend on the confirmed configuration and quantity.
Sample options
After requirements and payment are confirmed: stock samples approximately 3 working days; functional/protocol configuration 15–20 working days; logo, manual or packaging adjustments approximately 10 working days.
Confirm your application before ordering
Send the complete indoor-unit model, communication connector or wiring photos, required protocol and control functions. Compatibility depends on the exact unit and ordered configuration.
Selection and installation reference
AcmeLink_GW: connection routes and project handover
AcmeLink_GW connects a matched native VRF bus to RS485 Modbus. The converter uses a separate 12 V DC power terminal and supports DIN-rail or surface mounting. Optional touch interfaces and their wireless functions are separate configuration choices; the converter should not be assumed to include a WiFi or Zigbee panel.
Read the two sides of the connection separately
The source matrix labels the columns “VRF side” and “AC side.” Both are reproduced below to avoid treating identically named terminals on different brands as interchangeable. These are screening references, not approved installation instructions.
| System / source label | VRF-side port in source | AC-side port in source |
|---|---|---|
| Daikin - multi outdoor-unit system | F1/F2 | F1/F2 (external-internal) |
| Daikin - single outdoor-unit system | F1/F2 | F1/F2 (internal-external) |
| Mitsubishi Electric - multi outdoor-unit system | F1/F2 | M1/M2 (TB7; source footnote 2) |
| Mitsubishi Electric - single outdoor-unit system | F1/F2 | M1/M2 (TB3) |
| Mitsubishi Electric - Power Multi Lingyao (source label) | F1/F2 | M1/M2 (outdoor unit / distribution cabinet) |
| Hitachi | F1/F2 | 1/2 |
| Toshiba | F1/F2 | U1/U2 |
| Panasonic | F1/F2 | U1/U2 |
| Hisense | F1/F2 | 1/2 |
| Haier | F1/F2 | P/Q |
| York - Qingdao | F1/F2 | 1/2 |
| York - Guangzhou | X/Y | A2/B2 |
| Gree | H/L | G1/G2 or D1/D2 (different system routes) |
| TCL | H/L | F1/F2 |
| Mitsubishi Heavy Industries | X/Y | A1/B1 or A2/B2 (different system routes) |
| Midea / Bosch / Carrier | X/Y | X/Y or P/Q (different system routes) |
| Midea - Cool Style | X/Y | A/B (external) |
| Oaks (source label) | X/Y | A/B |
| Samsung | X/Y | F1/F2 |
| LG | X/Y | A/B (CEN) |
| McVeil (source label) | X/Y | Apc/Bpc |
| Tianjia (source label) | X/Y | A3/B3 |
| Chigo | X/Y | P/Q |
| Trang (source label) | X/Y | A/B |
| York household water machine (source label) | X/Y | A/B or A2/B2 (different system routes) |
| McQuay household water machine (source label) | X/Y | Apc/Bpc |
| Carrier household water machine (source label) | X/Y | A/B |
| Trang household water machine (source label) | X/Y | CN29 (A/B) |
Items that must be confirmed for your system
- Exact indoor/outdoor models, selected native protocol and the physical connection point.
- Polarity, whether an outdoor-unit connection is needed, and centralized address requirements. These vary between routes even within one brand.
- Modbus register map, serial settings, control permissions and target BMS or wall interface.
- Power-supply specification and the final packing list: confirm whether the supply, wall interface and cables are included in the quotation.
- Commissioning checks for supported operating modes, setpoint, feedback and any required fault reporting.
The supplied matrix contains footnote markers 1 and 2 without their explanations in the illustrated panels. Some regional system names are also unclear in English. Confirm those entries with ACMELEC using model-label photographs; do not infer brand equivalence or installation requirements from them.
References: system specifications panel · connection panel 1 · connection panel 2 · wiring document · product overview.
Complete system presentation
AcmeLink_GW VRF protocol conversion, controls and compatibility
Review the multi-brand system concept, supported HVAC families, intelligent protocol conversion, wall interfaces, smart functions, panel designs, system specifications and wiring matrix.
Protocol conversion
Connect native VRF communication to standard automation
AcmeLink_GW handles the brand-side communication while RS485 provides a standard control route for the selected interface or automation system.
Brand-matched input
Native terminal names vary by system, including F1/F2, X/Y, P/Q, A/B, H/L and other brand-specific routes.
RS485 output
Designed for standard automation integration. Confirm the required Modbus register and control architecture during project matching.
Flexible interface
Can be paired with selected touch interfaces offering WiFi, Zigbee and Tuya options, or integrated into a compatible centralized controller.
Project configuration
Polarity, external-device requirement and centralized address behavior differ by HVAC system.
Supplied compatibility matrix
Representative supported brands
- Daikin, Mitsubishi Electric, Mitsubishi Heavy Industries and Hitachi
- Toshiba, Panasonic, Hisense, Haier and LG
- York, Gree, Midea, TCL, Samsung and selected regional systems
This list is a project-screening reference only. Exact support depends on model, terminals, polarity and addressing requirements.
Confirm before sample
- Complete outdoor and indoor-unit model numbers
- Existing controller and system architecture
- Communication terminal names and clear wiring photo
- Required number of zones and centralized addresses
- RS485/Modbus or wall-interface control objective
System specification
AcmeLink_GW gateway summary
| Converter | AC-VRF-RS485-E1000 / AcmeLink_GW project platform |
|---|---|
| Input protocol | Matched native VRF connection |
| Output protocol | RS485 standard automation |
| Power supply | 12V DC, dedicated terminal block |
| Mounting | DIN rail or surface mount |
| Interface options | Touch wall interfaces with selected WiFi, Zigbee or Tuya functions |
| Typical control | Cool, heat, fan, dry, auto, setpoint, room temperature and status, subject to project configuration |
Why it is separate from S20
AcmeLink_GW is a gateway architecture, not simply a wall thermostat. It is the better route when the buyer needs Modbus/BMS integration or a separate protocol-conversion device.
Compare the S20 wall thermostatVerified product answers
AcmeLink_GW project questions
Is AcmeLink_GW a universal plug-and-play gateway?
No. It is configured for the selected HVAC protocol. Wiring, polarity and addressing must be checked for the exact system.
Can AcmeLink_GW connect a VRF system to a BMS?
Yes. It converts a matched native VRF connection to RS485 Modbus. The register mapping and project architecture must be confirmed before quotation.
What power supply does AcmeLink_GW use?
The gateway uses a 12 V DC supply through its dedicated power terminal.
Samples, MOQ and lead time
Purchasing information
- Pricing is quoted according to model, configuration and order quantity.
- Standard MOQ: 60 units/sets.
- Standard stock samples: approximately 3 working days.
- Functional or protocol-configured samples: approximately 15–20 working days.
- Logo, manual or packaging-adjusted samples: approximately 10 working days.
- Mass-production lead time is confirmed according to quantity and production schedule.
Logo, packaging and certification
- Free laser-engraved product logo when the standard MOQ is met.
- Orders below 500 units/sets use standard white corrugated packaging.
- Full-color logo packaging is available from 500 units/sets.
- CE, RoHS, applicable RED, FCC and relevant wireless-module documents are confirmed by model and target market.
ACMELEC AcmeLink evidence and support
Review the video index, compatibility source records and support checklist. Demonstrations, manufacturer declarations, manual connection references and customer reports have different evidence limits. Request the complete indoor-unit match and delivered firmware before ordering.