OEM Space heating
Heating distribution kits are pre-manufactured units. There are pumps for different zones with or without mixing valves. For systems with a hydraulic separator or buffer tank, distribution pumps are independent from the heat generator and primary pump and can be internally controlled like ALPHA.
These are secondary pumps within the heating system and are usually stand-alone and self-controlled. They can be mounted in a heating kit , and respond to the changing flow demands of radiators and underfloor heating circuits. Providing the best operating conditions for all components, hydraulic balancing is important for well-performing hydraulic systems. This is particularly true for two-pipe heating systems featuring thermostatic valves.
The importance of hydraulic balancing
Hydraulic balancing helps avoid noise, oversupply, undersupply and overperformance, and is key to saving energy. If an automatic bypass valve is installed in the space heating system to ensure a minimum flow, you must adjust the pump’s differential pressure control to ensure the automatic bypass valve functions correctly.
For example, select a constant pressure curve that is higher than the differential pressure of the valve. The maximum liquid temperature and differential temperature depends on the system’s design. Tmax normally ranges from 30°C to 90°C and ΔT between 5K and 20K.