01 · MODULE 03

Closed heating-circuit module

Name: Closed heating-circuit module · ANHEL
Brand: ANHEL
SKU: BITP-NU

Indirect scheme: primary and secondary circulation loops are hydraulically separated by a plate heat exchanger.

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02 · Technical specifications

Series parameters

Reference characteristics. The final configuration is sized to the project brief.

Heat exchangers
1 to 2standard
Circulation pumps
1 to 3standard
Pump location
supply / return
Max. thermal load
up to 5Gcal/h (standard)
Heating-system DN
DN 15 – DN 200
Primary-side temperature
up to 200°C
Secondary-side temperature
up to 120°C
Heating control
weather-compensated

03 · DESCRIPTION

Purpose and operating principle

Indirect (closed) scheme: the primary circuit (district network) and the secondary circuit (the building's internal system) are hydraulically separated by a plate heat exchanger. This delivers hydraulic isolation, protects the secondary loop from contaminants in the network water and allows the building to maintain its own pressure regime. Heating is weather-compensated, regulated by outdoor air temperature. Circulation-pump control is on/off, variable-frequency, or variable-frequency per pump (VFD-per-pump).

04 · APPLICATIONS

Where the module is used

Multi-unit residential buildings and developments on district heating
Business centres and public buildings with an indirect connection scheme
Industrial facilities requiring hydraulic isolation between loops
Retrofit of substations transitioning from open to closed scheme

05 · ADVANTAGES

Why ANHEL®

Factory assembly, quality control and our own automation.

Factory assembly
Block-modular construction — not improvised on-site assembly in the basement.
Made to order
Built to the heat-network design parameters with flexible capacity and heat-carrier options.
Quality control
Every module passes hydraulic and electrical testing before shipment.
Weather-compensated control
Automatic parameter selection from the outdoor sensor. Integrates with the building SCADA.
Long design life
Average service life of at least 15 years in normal operation.
Complete documentation set
Regulatory, operational and passport documents — all supplied with the delivery.