HEATING

1) WEISHAUPT WTC-GW 60-8 Exéc. H 1.00 wall-mounted condensing gas boiler 6,766.00

(FR) WEM control (new installation 2025)

2) CIAT brand heat pump (HP or ILPC type cooling or chilled water production unit)

Main heat sources for:

• underfloor heating. The ILPC heats water to a low temperature (generally between 30°C and 45°C), which circulates in pipes embedded in the floor of the dwellings, providing gentle, even heat. Advantages: comfort + energy efficiency + aesthetics (no radiators).

• Domestic hot water (DHW) preparation. The heat pump heats a buffer tank or DHW tank (such as the Viessmann VertiCell-HG).

Estimated distribution:

• Gas boiler: could cover around 70-80% of total heating and DHW demand (when it is cold or during periods when the heat pump is less efficient).

• Heat pump: could cover around 20-30% of demand, particularly in milder weather conditions when the heat pump is more efficient and consumes less energy.

In summary, this modern mini-boiler room produces heating and DHW. It supplies the three dwellings via a well-insulated pipe network. Consumption management (meter reading/cost sharing) is facilitated by Itron meters that allow remote reading for each dwelling (see below).

Model: ILPC 120V-STD. Product number: SO 16000558. Serial number: 160401809E. Year of manufacture: 2016. Place of manufacture: Spain.

3) Central DHW tank (ECS), model VertiCell-HG 3003 334, manufactured by Viessmann Werke GmbH & Co, serial no. 7516172500577.

This is a high-capacity hot water producer using a heat exchanger. Tank volume: 500 liters.

Primary heating capacity: 15 L. Heating supply temp: 70°C. Power: 57 kW. Flow: 1400 L/h at Δt 10/45 °C. With steam: 83 kW, 2039 L/h.

4) Raychem LS-20-01 electronic heat-tracing controller, used in the HWAT Plus System. It regulates heating cables installed on DHW pipes to maintain water temperature up to the apartments (typically 45°C to 55°C) even without recirculation. This improves comfort, hygiene, and efficiency without needing a return loop.

METERING

4) “EverBlu Cyble” radio module by Itron.

This module is used for remote reading of water meters via RF (radio frequency). It is mounted on a mechanical meter with a Cyble output. It can be integrated into a remote reading system (common in multi-unit buildings), allowing the manager to monitor consumption without entering apartments.

5) Set of water meters by Narval, mounted on a collector with individual shut-off valves. Each unit (or floor) is supplied with hot water from the central DHW tank. The Narval meter measures consumption in liters or m³. The valves allow individual cut-off of the ECS circuit. These meters are mechanical and compatible with remote reading modules (like the EverBlu Cyble above).

6) 7 thermal energy meters (in MWh) by Allmess, all clearly labeled. They are connected to the TELECONTROL-E system, enabling remote reading. Each apartment or floor can:

• have one meter for underfloor heating

• and another for DHW heating energy

Since both circuits are measured separately, this enables precise cost distribution. Furthermore, even if a floor is currently used as a single unit, the system is already designed to allow future subdivision without needing to modify the boiler room.

• 2 for the ground floor

• 2 for the 1st floor

• 2 for the 2nd floor

• 1 for the attic

AIR / VENTILATION

7) Central ventilation unit by ALDES, model VEC (Ventilation Extraction Collective) 240 HT. Serial number: 50399691.

This type of unit provides extraction of stale air from humid rooms (kitchen, WC, bathroom) via a shared duct system between apartments, with exhaust to the outside via a roof outlet or fan turret.