Internal view of heat pump units

The Greensource air to water heat pump outdoor unit

Key to components

1. Low pressure switch
   
2. Manual air vent
   
3. Sight glass
   
4. Condenser
   
5. Drying filter
   
6. High pressure switch
   
7. Service connection
   
8. Compressor
   
9. Service connection
   
10. Non-return valve
    
11. Expansion valve
    
12. Four-way valve
    

The Greensource heating and hot water distribution unit

Key to components

1. System pressure relief valve (factory fitted)
   
2. Pressure gauge
   
3. Drain valve
   
4. Three-way valve (hot water)
   
5. Three-way valve (heating)
   
6. Non-return valve
   
7. Pump for heating system (G1)
   
8. Heat carrier pump (G2)
   
9. Mixing valve
   
10. REGO 800 control panel
    
11. Temperature and pressure relief valves (factory fitted)
    

Note: An unvented kit, which includes a filling loop, blending valve, a 19 litre expansion vessel and hose, inlet control set, 15mm x 22mm tundish and waste coupler is supplied with each unit.