D. Cv-aanvoer E. Cv-toevoer F. Condensafvoer 1. Expansievat 2. Vulkraan 3. Overdukventiel 4. Drukverschilregelaar 5. Sifon 6. Tweewegklep 7. Thermostaat eerste zone 8. Thermostaat tweede zone
d. heating flow e. heating supply f. condensate drain 1. expansion tank 2. fill valve 3. pressure relief valve 4. pressure regulator 5. siphon 6. two-way valve 7. thermostat first zone 8. thermostat second zone
f. e. condensate drain 1. Expansion tank 2. Warmth guarantees a 3. Overdukventiel 4. Differential pressure regulator 5. Siphon 6. Two-way valve 7. Thermostat first zone 8. Thermostat second zone
D. Central-landing E. Central supply F. Condensate Drain 1. Expansion bottle 2. Filling Valve 3. Overdukventiel 4. Drukverschilregelaar 5. Siphon 6. Valve Manifold 7. Thermostat first zone 8. Thermostat second zone