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R1K 18 - RAD - ING - Manuale - 1706.1_V3
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2. MAINTENANCE
SUPPOR
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ENTRE
2.2.10. HYDRAULIC BOARD
KEY
R. HEATING RETURN
G. GAS INLET
SC. CONDENSATE DRAIN
F. COLD WATER INLET
A. HEATING FORWARD
1. FUMES SAFETY THERMOFUSE
2. HEAT
EXCHANGER
3. BURNER
UNIT
4. ELECTRIC
FAN
5. GAS
VALVE
6. AIR RELIEF VALVE
7. CIRCULATOR
8. SAFETY VALVE 3 bar
9. SYSTEM DRAINING TAP
10. HEATING PROBE
11. SAFETY
THERMOSTAT
12. EXPANSION TANK
13. AIR SUCTION TUBE
14. PROPORTIONAL VENTURI
15. WATER PRESSURE SWITCH
16. CONDENSATE COLLECTION SIPHON
17. BY-PASS
18. SYSTEM FILLING TAP
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