Panasonic Aquarea KIT-WC09K3E5

Air-to-water heat pump

Monitor this K-generation heat pump through a separate Intesis INMBSPAN001A100 Modbus RTU gateway. HMS publishes K-series temperature and energy registers, so an installer can start with a read-only comparison at the controller. Delivered heat and whole-system COP still need independent meters.

Panasonic Aquarea K-generation indoor and outdoor heat pump units
  • Modbus RTU

Air-to-water heat pump

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Compatibility

Compatible with EpiSensor Edge over Modbus RTU through an Intesis gateway

HMS names INMBSPAN001A100 as the successor to the legacy A000 and supports Aquarea H/J/K/L/M series. Its v1.0.2 manual documents a wired hydro-unit connection, Modbus RTU server settings and K-series read-only registers. The exact-model lookup still shows the older A000 and cautions about control signals; this guide uses the newer gateway's published map as a best-effort monitoring starting point.

For KIT-WC09K3E5, match the WH-SDC0309K3E5 indoor and WH-UDZ09KE5 outdoor nameplates, fit the INMBSPAN001A100 to the hydro-unit socket and compare live reads with the local controller. Confirm the installed gateway revision and available values during commissioning. No write or demand-response command is covered.

Connect it with

The K-generation hydro unit has a commissioned INMBSPAN001A100 gateway on its supplied connection cable

  • Wired
  • Edge
  • Platforms
Air-to-water heat pump
Interface
Gateway
Edge
Output
Aquarea KIT-WC09K3E5WH-SDC0309K3E5 indoor hydro unit
INMBSPAN001A100Aquarea hydro-unit to Modbus RTU gateway
ZGW-20 GatewayHosts Edge locally
EpiSensor EdgeModbus client + register map
Customer platformMQTT · API · files
Supplied Aquarea connection cable
Modbus RTU over EIA-485
Runs locally
Optional onward data
Connect the supplied 1.5 m cable between the hydro-unit control-board socket and the Intesis Hydro Unit socket. The Intesis device, not the heat pump, is the Modbus server. Wire its A+/B- port to a protected EIA-485 bus; start with server address 1, 9600 baud, eight data bits, no parity and one or two stop bits (the gateway auto-detects). Terminate the bus at its ends. Use read functions only. The customer-platform output is optional; Edge remains the local system of record.

Models

Download
ModelsInterfaceRoute into Edge
WH-SDC0309K3E5 indoor unitK-generation hydro unit; optional BMS integration via a separately selected gatewayConnect the separately fitted A100 gateway to the hydro-unit control-board socket, then compare read-only values with the indoor controller.
WH-UDZ09KE5 outdoor unitPaired outdoor unit in KIT-WC09K3E5Do not treat the outdoor model as a Modbus server or as a substitute for the indoor-unit lookup.
INMBSPAN001A000 / INMBSPAN001A100Separate Intesis EIA-485 Modbus RTU gateway familiesUse the A100 map for a read-only trial. The exact-model lookup names legacy A000 and its warning concerns sufficient signals for control, not the A100's published K-series read registers.

Specifications

Panasonic's KIT-WC09K3E5 couples the WH-SDC0309K3E5 indoor unit with the WH-UDZ09KE5 outdoor unit. Its model page describes optional BMS integration, not a built-in Modbus RTU server.1

Kit identity
KIT-WC09K3E5: WH-SDC0309K3E5 indoor plus WH-UDZ09KE5 outdoor1
Declared capacity
9 kW class, K generation; use the project's operating-point data for sizing1
Exact-model accessory result
INMBSPAN001A000 Modbus RTU gateway, with a K-series signal sufficiency warning2
New gateway evidence
INMBSPAN001A100 supports H/J/K/L/M and supersedes A000; manual v1.0.2 gives K-series read registers45

Interface

Documented measurements and integration boundaries for Aquarea KIT-WC09K3E5.

  • The A100 map lists outdoor temperature at zero-based register 1, outlet-water temperature at 2 and inlet-water temperature at 3. SW4 selects Celsius, tenths of a degree Celsius or Fahrenheit; compare the decoded value with the local controller.
  • The gateway, when fitted, is the Modbus server. The Panasonic indoor unit is connected through the gateway's Aquarea interface, not directly to an Edge Modbus port.
  • The A100 manual marks heat-mode energy consumption and generation at zero-based registers 360 and 363 as K-series onward, in W. Its accumulated consumption at 366-367 and heat generation at 368-369 are two-register Wh values. Treat these as controller-reported operating data, not revenue-grade metering.
  • Controller values do not establish delivered heat or whole-system COP. Use an independent heat meter and electricity meters across the declared measurement boundary.
  • No heating mode, setpoint, DHW, defrost, SG Ready or demand-response write is approved by this guide.

Assessment

Read-only KIT-WC09K3E5 monitoring through the A100 gateway and the v1.0.2 map. Compare live K-series values with the local controller; independent meters define a COP boundary.

InteroperabilityLimited
HMS supports K-series through the A100 gateway and publishes its Modbus RTU map. The legacy exact-model lookup's control warning does not validate writes here.245
AccuracyLimited
The A100 manual documents K-series temperature and energy reads. They support operational monitoring, while delivered thermal output and whole-system electricity require independent meters.24
SecurityNot yet assessed
Physical EIA-485 access and project segregation need review; the retained sources do not establish Edge-side access control for this specific installation.34
ReliabilityLimited
The A100 supplies a documented server and invalid-value conventions; compare live reads with the local controller and inspect its communication LED.24
RuggednessNot yet assessed
The kit and gateway are manufacturer-documented products, but their environmental limits have not been checked against an installed site.13
ScalabilityLimited
The listed gateway covers one Aquarea unit; a multi-unit plant needs a distinct design and meter boundary for every unit.23
LifecycleLimited
HMS identifies A100 as A000's successor, covering H/J/K/L/M. Record the installed gateway firmware and map revision for maintenance.245

Setup

Read outlet-water temperature through the A100 gateway

HMS INMBSPAN001A100 manual v1.0.2 lists outlet-water temperature at Modbus protocol address 2 (PLC address 3). This is a read-only first check on the gateway, not a command to the heat pump.

Target
A100 server address 1 by default, 9600 baud, 8 data bits, no parity; one or two stop bits auto-detected
Function
FC03 Read Holding Registers or FC04 Read Input Registers
PDU start
2 decimal (zero-based protocol address); PLC-style address 3
Length
1 register
Decode
Signed 16-bit temperature; default SW4 setting is whole degrees Celsius, or tenths of a degree Celsius when SW4 P1 is on
Unavailable
0x8000 marks an invalid signed value; do not display it as a temperature

Acceptance: Compare the decoded outlet-water value with the Aquarea controller at the same moment. If it is absent, check the gateway LED, bus address, A+/B- polarity and SW4 temperature setting before changing the map. This example is based on the published manual, not a physical test by EpiSensor.

  1. Record both units

    Capture indoor and outdoor model plates, firmware and the heater variant. Use WH-SDC0309K3E5 as the exact lookup reference, not the sales-kit label alone.

  2. Install the A100 gateway

    Use the gateway's supplied cable at the hydro-unit control-board socket and wire A+/B- to the EIA-485 bus. Record its DIP-switch address, 9600 baud starting setting, temperature-unit switch and termination position. Check the status LED for normal operation.

  3. Design independent measurements

    Specify a heat meter for delivered thermal energy and electricity meters for all included compressor, pump and auxiliary loads. Keep the physical COP boundary explicit.

  4. Compare the first read

    Read outlet-water temperature at zero-based register 2 with FC03 or FC04 and compare with the controller at the same moment. Then inspect K-series energy registers 360 and 363 if exposed. Treat 0xFFFF/0x8000 as invalid, investigate a gateway communication-error LED and leave writes disabled.

Common questions

Does KIT-WC09K3E5 have native Modbus RTU?
The Panasonic model page offers BMS integration, while HMS lists a separate Intesis gateway for the exact indoor unit. Do not wire Edge directly to the heat pump as if it were a Modbus server.12
Which Intesis gateway should I try for monitoring?
HMS identifies INMBSPAN001A100 as the successor to A000 and supports the Aquarea K series. The older exact-model lookup still shows A000 with a control-signal warning. For monitoring, start with an A100 read-only trial and check the installed unit's values against its controller.245
Can the gateway's estimated energy values prove COP?
No. Defensible unit or system COP needs independently measured delivered heat and all electrical inputs inside the declared boundary over matching periods. Controller telemetry helps explain operation, not replace those meters.13

Sources

  1. KIT-WC09K3E5 model and component listing (opens in a new tab) Panasonic
  2. WH-SDC0309K3E5 compatibility lookup (opens in a new tab) HMS Networks / Intesis
  3. INMBSPAN001A000 Modbus RTU user manual r1.6 (opens in a new tab) (PDF) HMS Networks / Intesis
  4. INMBSPAN001A100 Modbus RTU user manual v1.0.2 (opens in a new tab) (PDF) HMS Networks / Intesis
  5. INMBSPAN001A100 product and Aquarea series coverage (opens in a new tab) HMS Networks / Intesis

Further reading

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