Tegao floating-coil storage hot-water exchangers

Compare the demand profile with usable storage and recovery

Give Tegao the actual hot-water use pattern: peak draw, duration, inlet conditions, required delivery temperature and the available heating-medium conditions. Ask for usable storage and continuous recovery stated together at those conditions. The supplier’s generic description does not provide a number of users, rooms or fixtures that any family member can serve.

Separate nominal vessel volume from usable hot water under the agreed control and mixing arrangement. Require the project designer’s system selection and the supplier’s selected thermal schedule. No universal reserve percentage, recovery time or simultaneous demand factor is invented here.

Resolve the heating source and any dual-medium arrangement

The page offers steam or hot water as the heating medium and says the product can suit two different media. It does not show whether the actual quotation has separate coils, a shared arrangement or which interfaces are included. Obtain a labelled internal drawing and a circuit diagram for the ordered configuration.

Specify which source is normally available, which can be lost and how the system should respond. Ask for the actual transfer/priority sequence and the stated performance with each source individually. The sentence about two media cannot establish automatic changeover, full-duty backup or simultaneous summed capacity.

Review the water path and maintenance reality

The description claims no dead-water area and attributes reduced scale adhesion to coil movement and vibration. Neither the family photograph nor the reviewed text provides a distribution/temperature test or a water-quality envelope proving those claims for a selected installation. Request the water-path drawing and written operating/maintenance conditions.

Have the responsible project designer determine the hot-water hygiene and distribution requirements. Confirm flushing, draining, inspection and cleaning arrangements with the supplier. The moving-coil description is not a reason to omit maintenance or assume that all water sources are compatible with the vessel and coil materials.

Check the large vessel’s installation and pressure dossier

The original shop photograph shows a horizontal shell on rollers, accessible flanged openings and several connections. Ask for the actual issued dimensions, transport/operating mass, supports, nozzle schedule and space needed for internal service. The pictured assembly is not a dimensioned drawing and its visible openings do not prove the complete delivered accessories.

Obtain the material schedule and pressure/temperature limits for the water vessel and every heating circuit. Current manufacturing documentation must identify the ordered construction and actual production site. Historical atlas references and patents do not certify this pressure boundary or settle local project acceptance.

Agree the delivered system and recovery evidence

Clarify whether the quotation includes only the exchanger/vessel or also pumps, valves, mixing arrangements, sensors and controls. Obtain the control sequence, temperature measurement points and interface to the distribution system. For a dual-medium order, record the tests for each mode rather than relying on the general family name.

Agree the thermal/recovery evidence and inspection records delivered with the equipment. Current prices, lead times, exact capacities and independent installation results were not established. This is a platform-written procurement brief for the named storage construction; it makes the missing selection work visible.

1. Describe the actual draw

   Issue peak use, duration, temperatures and heating-medium availability.

2. Approve the vessel and internals

   Confirm usable storage, recovery, water path, source circuits and service access.

3. Close delivery and acceptance

   Record accessory/control boundaries and the ordered recovery and inspection evidence.