Manifold-level control

Hydraulics intelligence lives at the system manifold, not at the trench. A 2-port modulating valve at the manifold opens and closes the chilled or warm water flow in response to the zone thermostat. No proprietary control layer at the trench.

Fan boost modulation

DC fans modulate continuously 0–100% based on the same zone thermostat that drives the manifold valve. Silent at low demand, ramping up when the heat pump's flow temperature is at the bottom of its range or when deep cooling is asked for on a hot day.

Heat / cool changeover

Reads the heat pump's heat-or-cool changeover signal automatically. The same trench delivers warm air-curtain in winter and chilled air-curtain in summer. One installer-set parameter, no per-season operator intervention.

Dew-point sensor (deep cooling)

For deep-cooling installs, a dew-point sensor in the zone monitors humidity. If conditions approach the trench's surface temperature, chilled-water flow temperature is raised automatically — keeping condensation safely captured in the tray rather than appearing on surrounding floor finishes.

Multi-zone trench networks

Long commercial trench runs are typically zoned along their length — different sections of the same glazing run at different setpoints. Useful in restaurants where the bar end and the dining end have different occupancy patterns, or in office floors where east and west elevations need separate cooling logic.

Schedule programming

Time-of-day temperature programmes per zone. Office floors at 21°C from 8am to 6pm. Restaurants at 22°C from 11am to 11pm. Conference halls scheduled to event bookings via the BMS. Holiday/closed-day mode drops the lot to frost protection.

BMS integration

Commercial buildings with a central building-management system integrate the manifold valves, fan controls, and zone thermostats via BACnet, KNX, or Modbus at the gateway level. The trench network reports state to the BMS like any other hydronic emitter circuit.

Occupancy sensing

Optional CO₂ or occupancy-sensor input lets the trench network ramp up output when a room fills (conference hall before a session start) and back down when occupancy drops. Particularly useful for venues with intermittent high-occupancy events.

No interface at the trench

The trench grille is just a grille — walkable, removable for cleaning, otherwise inert. The building runs the system through thermostats, BMS, and the heat pump app, not through any trench-level interface.

1 · Commercial trench casing

Galvanised-steel trench casing forming the recess in the slab or screed. 190 mm deep, 250 mm wide, supplied in 1 m sections cuttable on site. Heavier-gauge steel than the Canal 13 for commercial duty cycles. Insulated and sealed against the slab to prevent thermal bridging.

2 · High-output heat exchanger

Copper-aluminium core sized for the higher output per metre. Higher fin density, larger coil cross-section than the Canal 13. Water content ~0.8 L per linear metre — still low compared to a steel emitter, but optimised for the higher heat-transfer rate the commercial range needs.

3 · DC fan boost (standard)

Three or four brushless DC tangential fans inside the trench casing, modulating 0–100%. 24 V DC supply. Boost output by up to 80% on demand. Standard inclusion on the 19-series (optional on the 13-series). Replaceable as a service item.

4 · Walkable architectural grille

Heavy-duty walkable grille flush with the finished floor, designed for commercial foot-traffic loads including service trolleys and stiletto-rated surface engagement. Choose oak, walnut, brushed stainless steel, brushed brass, anodised aluminium, or bespoke materials for hospitality projects.

5 · Condensate tray + gravity drain

Stainless-steel tray along the base of the trench. Drainage by gravity into the building's waste runs beneath the slab — typically routed at first-fix to the nearest soil stack or floor drain. No condensate pump required at the trench (the trench is below floor level, gravity does the work).

6 · 24 V DC PSU

PSU concealed in the floor build-up or adjacent service cupboard. 230 V mains in, 24 V DC out to the fan bank. One PSU typically serves several metres of trench. RCD-protected from the building's lighting or small-power circuit.

10-year warranty

Jaga warrants the Canal 19 heat exchanger and commercial trench casing for ten years from commissioning. Covers the copper-aluminium core, the galvanised-steel casing, and the powder-coat finish. Conditional on commercial-grade water treatment and a magnetic filter on the heating circuit.

2-year fan & pump warranty

DC fan assembly and condensate-management hardware covered separately for two years. After that both are low-cost service items — accessible from above by lifting the walkable grille. Genuine Jaga spare parts available indefinitely.

50-year design life

Jaga publishes a 50-year design life on the Canal 19 body. Stainless-steel condensate tray prevents the corrosion that ends most commercial trench systems prematurely. Belgian-built to an institutional duty-cycle specification.

Quarterly grille check

Commercial venues benefit from a quarterly visual check of the walkable grille — foot traffic, service trolleys, and dropped items can dull a grille faster than residential use. The facility team can wipe and re-fit in a few minutes per linear metre.

Annual condensate flush

The condensate tray and gravity drain need an annual vinegar flush before the cooling season. CleverBloom commercial service plans include this. Critical in restaurant and hospitality settings where biofilm growth in the drain can cause odour and overflow if neglected.

Commercial magnetic filter & inhibitor

Commercial-grade magnetic filter on the heat-pump return and corrosion inhibitor in the fill water protect the Canal 19's narrow copper waterways from sludge and from mixed-metal corrosion. Mandatory for Jaga's 10-year warranty. Fitted in the plant area, serviced annually.