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3.4 MAIN COMPONENTS OF THE H2O HEATER AND COMPACT BOILER
GENERAL DESCRIPTION
A: BRAZIER CLEANER MOTOR
B: SYSTEM CIRCULATING PUMP
C: SMOKE SUCTION UNIT
D: SMOKE OUTLET TUBE
E: COMBUSTION AIR EXHAUST TUBE
F: SMOKE SIDE PRESSURE SWITCH
G: SAFETY THERMOSTAT CALIBRATED AT 100°C
H: PELLET FEED MOTOR
I: PELLET TANK
L: ELECTRONIC POWER BOARD
M: PRESSURE TRANSDUCER
N: SPARK PLUG
O: SUMP FOR PTC HEATING SENSOR AND
THERMOSTAT BULB WITH RESET AT 100°C
P: AUTOMATIC RELIEF VALVE
Q: INSPECTION COVER FOR TUBE BUNDLE
R: CONTROL PANEL
S: SPIRAL TUBE SCRAPER LEVER
T: ASH PANS
U: PATENTED BURNER
V: RIDDLING TOOL
W: PLANT DRAIN GATE VALVE
X: WATER RETURN
K: WATER DELIVERY
Z: GATE VALVE FOR PLANT REFILL
Y: SAFETY VALVE 3 BAR
AA: ROOM TEMPERATURE THERMOSTAT
AC: 8 L EXPANSION TANK TO PROTECT BOILER