Product Overview & Application Area
The Sunex FISH S4 100 X buffer tank is a compact 100-liter heating buffer tank for closed heating systems. It is used to buffer heating water and supports the hydraulic integration of the heat generator and heating circuit in a vertical installation position.
The tank is particularly suitable for systems where a small buffer tank for system water is required. Depending on the article variant, the FISH S4 100 X is designed as a hanging version for wall mounting or as a version for wall mounting or installation on adjustable feet.
Technology & Equipment
The Sunex FISH S4 100 X is designed as a buffer tank without an integrated heat exchanger. The tank body is made of steel S235JR and is equipped with 30 mm thick rigid polyurethane foam insulation in a PVC film jacket.
Connections for the heat source and heating circuit are available for hydraulic integration. In addition, the tank has temperature sensor connections and a drain connection. This allows the tank to be integrated into compact heating systems with one heat source circuit and one central heating circuit.
Everyday Benefits
The buffer tank stores heating water and can thereby support the coordination between the heat generator and the heating circuit. This is particularly helpful in modern systems with changing operating conditions when a limited storage volume is needed for hydraulic stabilization.
Thanks to the compact 100-liter design, the tank is suitable for utility rooms with limited space. The available wall mounting and the version with adjustable feet make it easier to adapt to different installation situations.
System Integration & Compatibility
The Sunex FISH S4 100 X is intended for closed heating systems and can be used in system environments with heat pumps, wood heating, oil, gas, or electric heat generators, provided that the hydraulics, pressure maintenance, safety devices, and system design are professionally matched to this purpose.
The storage tank is not designed as a drinking water storage tank. For chilled water applications in the range of 7 to 12 °C, the connection stubs must be additionally insulated to reduce condensation and heat absorption at the connections.
Technical data at a glance
| Manufacturer | SUNEX S.A. |
| Model | FISH S4 100 X |
| Storage tank type | Buffer storage tank without heat exchanger |
| Storage volume | 100 liters |
| Number of heat exchangers | 0 |
| Insulation | 30 mm rigid PUR foam in PVC foil jacket |
| Max. operating pressure | 3 bar |
| Max. temperature | 95 °C |
| Storage tank material | S235JR |
| Weight | 23 kg |
| Installation position | vertical only |
Mounting
The storage tank is intended exclusively for vertical operation. The wall-mounted version is mounted on a sufficiently load-bearing wall. Depending on the installation situation, variant 693 000 102 can also be placed on support feet.
Hydraulic connections, temperature sensors, drainage, safety valve, pressure maintenance, and venting must match the respective heating system and be carried out professionally. For wall mounting, the filled storage tank load including safety margin must be taken into account.
Notes
The permissible operating pressure of 3 bar must not be exceeded. The storage tank must not be mounted horizontally or at an angle. For operation, maintenance, and inspection, a depressurized, sufficiently cooled system state and suitable safety devices are required.
The specific design of the heating system, its integration into the hydraulic circuit, and the sizing of the safety valve, expansion vessel, and venting must be ensured by expert planning or execution.
Scope of delivery
- Sunex FISH S4 100 X buffer tank 100 liters without heat exchanger