Fresh Water Modules for DHW Heating
Fresh water modules ensure hygienic heating of domestic hot water. We explain clearly how exactly they work.
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Vitotrans 353
Freshwater module
A fresh water module for heating hot water using the instantaneous water heating principle, with a flow rate of up to 68 l/min depending on the model
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High recovery rate
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The principle of instantaneous water heating
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For wall or cylindrical mounting
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Compact design
Your local AHI-Carrier sales partner will provide you with individual advice.
High recovery rate
This makes it versatile, for example, in detached/semi-detached houses, sports facilities, nursing homes.
The principle of instantaneous water heating
Fresh hot water is always available, no need for storage
Quick and easy installation on a wall or cylinder
Thanks to the pre-installed module, the control unit and the high-efficiency circulation pump are integrated and connected to each other.
Compact design
This allows it to be easily integrated into an existing heating system with a buffer tank for hot water.
Can be connected in cascade
Without additional external control unit (types PBMA, PBMA-S, PBLA and PBLA-S)
Low flow temperature required
Thus, it is ideal for integration into low-temperature heating systems with solar thermal systems.
Vitotrans 353 fresh water modules
Freshwater modules provide convenient and hygienic hot water heating using the instantaneous hot water principle. Unlike conventional hot water cylinders, water is not used to store thermal energy, but is heated only as needed using a powerful plate heat exchanger.
The energy for this DHW heating is taken from a heating water buffer tank, which can be heated by a wide range of systems – from solar thermal systems, solid fuel boilers, conventional oil/gas boilers, heat pumps or other systems.
Hygienic hot water heating based on the principle of instantaneous water heating
The Vitotrans 353 can maintain a constant hot water temperature at the tap despite varying water flow rates. Highly efficient, latest-generation circulation pumps are controlled by an integrated control unit, ensuring that the heating water flow rate is always optimal for the current water consumption.
Five Vitotrans 353 types ensure ideal convenience, optimum hygiene and long-term energy savings.
Series of products for wall mounting
- Type PBSA, water flow 25 l/min
- Type PBMA/PBMA-S, flow 48 l/min
- Type PBLA/PBLA-S, flow rate 68 l/min.
A series for DHW circulation for installation on a heating water buffer tank
- Type PZSA, flow 25 l/min
- Type PZMA, PZMA-S, flow rate 48 l/min.
A new feature for the proven Vitotrans 353 is a version with a nickel-plated plate heat exchanger. This alternative to the copper version, which is still available, can be installed in areas where water quality poses a risk of copper corrosion.
Freshwater modules
- Wall Mounting
- Circulation Series
Wall-mounted fresh water modules
Wall-mounted fresh water modules of the PBSA (flow rate 25 l/min), PBMA/PBMA-S (flow rate 48 l/min), and PBLA/PBLA-S (flow rate 68 l/min) types are supplied without a DHW circulation pump and can be retrofitted with a DHW circulation kit (accessory) inside the thermal insulation. A return circulation kit (accessory) can also be used via a 3-way diverter valve installed next to the heating water buffer tank.
To increase sampling speed, up to four identical PBMA/PBMA-S and PBLA/PBLA-S modules can be cascaded. No additional control unit is required, as the integrated control units communicate with each other via a BUS cable.
Vitotrans 353 fresh water modules for wall mounting, types PBSA/PBMA/PBMA-S (left) and PBLA/PBLA-S (right)
Modules for fresh water in the DHW circulation series
The DHW circulation series includes additional models for installation on a heating water buffer tank. The PZSA (25 l/min flow rate) and PZMA/PZMA-S (48 l/min flow rate) models are factory-installed with a DHW circulation kit, as well as a return distribution kit for quick and easy cylinder installation.
Fresh water modules in the DHW circulation version can be combined with the following Vitocell heating water buffer cylinders:
Product details
| Attrition rate* |
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| Cross-section of the product Vitotrans 353 type PBLA/PBLA-S |
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