7
I
I
n
n
t
t
r
r
o
o
d
d
u
u
c
c
t
t
i
i
o
o
n
n
Heater Components
1 Control box
2 Burner motor
3 Glow plug
4 Flame pipe
5 Overheating sensor
6 Heat exchanger
7 Water pump
8 Combustion chamber
9 Flame sensor
WI = Water inlet
WO = Water outlet
CA
= Combustion air
F = Fuel
E = Exhaust
