Buderus Boiler Room — Cascade Installation, 7 Circuits — Country House — St. Petersburg

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Описание проекта

Two Buderus gas condensing boilers in cascade connection — each boiler equipped with a built-in pump group with pressure gauges and safety valves. The cascade controller distributes load: at moderate consumption, only one boiler operates; in cold weather, the second boiler activates. An orange cascade control cable connects the boilers.
Buderus indirect heating boiler — floor-mounted, large capacity (~200 L), provides hot water supply for the entire house. Installed centrally in the boiler room between the boilers and the collector block.
8 pump groups — black modular wall-mounted units, each with an integrated circulation pump and thermomanometer. Serve separate circuits: zoned radiator heating, underfloor heating, DHW boiler, and ventilation.
Two membrane expansion tanks — red (for the heating circuit), located under each boiler, compensate for thermal expansion of the heat carrier.
DHW expansion tank — blue, for the domestic hot water circuit.
Safety group — pressure relief valve, air vent, manometer.
Gas meter — gray device installed between the boilers.
Stainless steel flues — two vertical coaxial chimneys routed through the wall and extended above roof level. Secured to the facade with steel brackets. The last photo shows vapor from a running flue — the system is operational.
Piping made of polypropylene — reliable and economical solution for internal boiler room distribution.

Boiler room design — calculation of the house’s thermal load, selection of cascade capacity, determination of the number of circuits, and piping layout.
Room preparation — walls tiled with ceramic tiles, ventilation installed, gas and electrical connections provided.
Buderus boiler installation — wall-mounting of two condensing boilers, connection of the cascade controller, gas connection via meter.
Buderus boiler installation — floor-mounted indirect heating boiler installation, connected to the boilers.
Collector block assembly — installation of 8 pump groups on a single frame, connection to supply and return mains.
Expansion tank installation — two red tanks for heating (one per boiler) and one blue tank for DHW.
Hydraulic piping — all elements connected using polypropylene pipes, installation of shut-off valves, filters, and check valves.
Flue installation — two stainless steel coaxial flues routed through the wall, vertically extended above the roof, secured with brackets.
Pressure testing — system filled, all connections checked for leaks under pressure.
Commissioning and balancing — first start-up of the cascade, automation setup, flow balancing across circuits, and flue exhaust verification.

Описание проекта

Two Buderus gas condensing boilers in cascade connection — each boiler equipped with a built-in pump group with pressure gauges and safety valves. The cascade controller distributes load: at moderate consumption, only one boiler operates; in cold weather, the second boiler activates. An orange cascade control cable connects the boilers.
Buderus indirect heating boiler — floor-mounted, large capacity (~200 L), provides hot water supply for the entire house. Installed centrally in the boiler room between the boilers and the collector block.
8 pump groups — black modular wall-mounted units, each with an integrated circulation pump and thermomanometer. Serve separate circuits: zoned radiator heating, underfloor heating, DHW boiler, and ventilation.
Two membrane expansion tanks — red (for the heating circuit), located under each boiler, compensate for thermal expansion of the heat carrier.
DHW expansion tank — blue, for the domestic hot water circuit.
Safety group — pressure relief valve, air vent, manometer.
Gas meter — gray device installed between the boilers.
Stainless steel flues — two vertical coaxial chimneys routed through the wall and extended above roof level. Secured to the facade with steel brackets. The last photo shows vapor from a running flue — the system is operational.
Piping made of polypropylene — reliable and economical solution for internal boiler room distribution.

Boiler room design — calculation of the house’s thermal load, selection of cascade capacity, determination of the number of circuits, and piping layout.
Room preparation — walls tiled with ceramic tiles, ventilation installed, gas and electrical connections provided.
Buderus boiler installation — wall-mounting of two condensing boilers, connection of the cascade controller, gas connection via meter.
Buderus boiler installation — floor-mounted indirect heating boiler installation, connected to the boilers.
Collector block assembly — installation of 8 pump groups on a single frame, connection to supply and return mains.
Expansion tank installation — two red tanks for heating (one per boiler) and one blue tank for DHW.
Hydraulic piping — all elements connected using polypropylene pipes, installation of shut-off valves, filters, and check valves.
Flue installation — two stainless steel coaxial flues routed through the wall, vertically extended above the roof, secured with brackets.
Pressure testing — system filled, all connections checked for leaks under pressure.
Commissioning and balancing — first start-up of the cascade, automation setup, flow balancing across circuits, and flue exhaust verification.

Buderus Cascade with Multi-Circuit Distribution