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©2009 Eco-Orlan USA LLC. All Rights
Reserved
.
Revised August 2009.
Scheme of the Paxo ® boiler, four-way mixing valve and water heater connected.
1. Four-way mixing valve
2. Circulating pump
3. Room thermostat
4. PAXO® BOILER
5. Radiator
6. OKCV water heater vessel
7. Differential valve
8. Pressure tank
9. Warm water outlet
10. Cold water entry
NOTICE!
Four-way mixing valve #1 should be set at 50% mixing.
15. Four-Way Mixing Valve
Mixing valves are mainly used for mixing function and boiler protection against low temperature corrosion as well as for heating of
warm, operational water. The mixing function is needed when the temperature into the central heating system needs to be changed e.g.
due to outside temperature changes (seasonal changes).
A four-way mixing valve is an essential component of any Paxo
®
boiler installation.
Four-way mixing valves can be used in gravity or pumped hydronic systems. The mixing function is based on mixing of hot water
coming from the heat source (boiler) with cold water from the system depending on valve regulation arrangement. This function
assures continuous regulation of the water temperature which helps for optimal fuel utilization.
The central heating system should be shut off during summer at the mixing valve to achieve fast and efficient water heating.
Four-way mixing valves are mainly used for reducing the boiler’s usage cost by returning excess heat back to the boiler. They protect
the boiler against low temperature corrosion by keeping a proper boiler temperature.
