QEQI Q39
Scale control for your hot water system.
A compact electronic water treatment unit for suitable residential and small commercial pipework. Start with the pipe size and installation conditions.
Confirm the model, pipe measurement basis and installation conditions before selection.
Request a quoteKnow the conditions.
Match the model specifications to the actual pipework. Confirm measurement basis, power supply and access before installation.
| Maximum pipe outside diameter | 38.1 mm OD |
|---|---|
| Typical power | 1.2 W |
| Dimensions | 110 × 70 × 76 mm |
| Weight | 192 g |
| Adapter input | 100–240 V AC |
Fit the system, not just the pipe.
- 01
Assess the cold-water feed to the heating equipment before installation.
- 02
Confirm pipe outside diameter, available clearance and power supply.
- 03
Check for closed electrical loops on metal pipework that could affect signal propagation.
A clear scope of treatment.
Electronic scale control does not remove dissolved minerals like a water softener.
Removing existing scale may reveal pre-existing leaks. Inspect older systems first.
Prepare for an informed decision.
Model-specific technical information
For installation planning, identify the model, pipe dimensions and site requirements. Consult the applicable manual and confirm the configuration before ordering.
QEQI Q39: practical questions
Pipe dimensions, installation and operation: answers for this product.
Explore treatment principlesHow should I measure the pipe for Q39?
Q39 has a documented maximum pipe outside diameter of 38.1 mm. Measure the actual outside diameter at the proposed installation point; a DN or inch designation is not the same measurement. Also check clearance around the pipe and the route to a suitable power supply.
Where should Q39 be installed in a hot-water system?
Begin by assessing the cold-water feed to the heating equipment. Review branches, pipe material and nearby metal connections before choosing a position. Closed electrical loops in metal pipework may affect signal propagation, so the final location should follow the applicable manual and the actual pipe layout.
What should be checked on an older system?
Inspect pipework, joints and heating equipment for corrosion and existing leaks. Scale removal may expose defects previously covered by deposits. Record the initial condition, retain access for inspection and agree on a response if leakage or released solids appear during operation.
How can I estimate Q39 electricity use?
The supplied specification lists typical power as 1.2 W. At that power, continuous operation for 365 days calculates to approximately 10.5 kWh per year (1.2 × 24 × 365 ÷ 1000). This is an estimate; actual consumption and cost depend on the configuration, operating time and local electricity tariff.
A specification is only the starting point.
A useful configuration connects product ratings to the actual operating environment.
| Assessment area | Site information | Engineering decision |
|---|---|---|
| Pipework & connectivity | Outside / nominal diameter, material, branches and closed electrical loops | Model fit, clearance and signal conditions |
| Hydraulic conditions | Flow, circulation path, pump position and available pressure | Installation location and filtration configuration |
| Water & process | Hardness, suspended solids, temperature and existing treatment | Treatment roles and processes to retain |
| Operation & maintenance | Load profile, cleaning history, inspection and discharge access | Comparable baseline and practical service access |
Electronic scale control, particle separation and water-quality compliance are separate responsibilities. A site may need several coordinated processes. Neither scale control nor filtration universally replaces softening, membrane treatment, disinfection or chemical management.
Related applications
Tell us about your water system.
Pipework, operating conditions and your objectives. Let’s start there.