Panasonic Aquarea Zone Water Sensor

Description

The Panasonic PAW-A2W-TSHC is a strap-on zone water temperature sensor used to detect the water temperature of a specific control zone on multi-zone Aquarea installations. It mounts directly onto the water pipework using a stainless steel strap and supplied contact paste — no sensor pocket required — and is a standard accessory when configuring two-zone heating control.

Strap-On

Mounting type

Zone 1 or 2

Control application

Multi-Zone

Typical use

CZ-NS4P

Requires optional PCB

Included Fittings

Strap + paste

Genuine Panasonic

Component

Required for multi-zone control

This sensor is used when installing multi-zone control — one PAW-A2W-TSHC per zone, reading water temperature at the point specified in Panasonic's hydraulic scheme for your system.

Requires the CZ-NS4P optional PCB

Zone water sensing is one of the enhanced functions unlocked by fitting the CZ-NS4P Optional PCB to the main control board. Without the optional PCB installed, the zone water sensor input is not active — see our CZ-NS4P listing.

Key features

Strap-on installation

Mounts onto the water pipework using a stainless steel metal strap and contact paste, both supplied — no need to cut into pipework or fit a sensor pocket.

Multi-zone control enablement

Reads the water temperature of an individual heating zone, feeding the data the Aquarea control logic needs to manage two-zone systems independently.

Genuine Panasonic component

Matched to the exact resistance and temperature characteristics expected by the Aquarea control board — avoiding the reading inaccuracies a generic substitute can introduce.

Straightforward wiring

Connects directly to the CZ-NS4P Optional PCB via a dedicated connector — no additional interface hardware required beyond the PCB itself.

Compact sensor housing

Small, unobtrusive sensor body designed to sit discreetly against pipework within a cylinder cupboard or plant space.

Wide Aquarea compatibility

Used across multiple Aquarea generations and platforms wherever the CZ-NS4P optional PCB is fitted for advanced zone or system control.

Technical specification

Model code	PAW-A2W-TSHC
Function	Zone water temperature sensor
Mounting	Strap-on — stainless steel metal strap and contact paste (both included)
Typical application	Multi-zone control (one sensor per zone, e.g. Zone 1 and Zone 2 water sensing)
Required companion accessory	CZ-NS4P Optional PCB (function only active when PCB is fitted)
Connector reference	CN205 / equivalent zone sensor input on Optional PCB
Compatibility	Panasonic Aquarea range wherever CZ-NS4P is fitted for enhanced functions

What's in the box

• 1 × Panasonic PAW-A2W-TSHC zone water sensor
• Stainless steel mounting strap
• Contact paste

Frequently Asked Questions

Do I need more than one of these?

For a two-zone system, you typically need one PAW-A2W-TSHC per zone — check your specific hydraulic schematic to confirm exactly how many are required for your configuration.

Does this work without the CZ-NS4P PCB?

No — zone water sensing is a function unlocked by the CZ-NS4P Optional PCB. Without that board fitted to the main control board, this sensor's input isn't active.

Where exactly does it mount on the pipework?

Per Panasonic's hydraulic scheme for your specific system configuration — refer to the installation manual for the exact zone pipework location. It straps directly onto the pipe using the supplied stainless steel strap and contact paste.

Can I use a generic strap-on sensor instead?

Not recommended — the Aquarea control logic expects the specific resistance and temperature characteristics of the genuine Panasonic sensor. A generic substitute risks inaccurate zone temperature readings.

Is this the same as the buffer tank sensor?

No — the buffer tank sensor (PAW-A2W-TSBU) is a separate, pocket-mounted sensor for measuring buffer tank temperature. The PAW-A2W-TSHC is specifically for zone water pipework.

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