Functioning of the water heater
12
Instruction manual DR-RS
2
gis
2.2
Functional
description of the
water heater
Figure 2.1 shows a cut-away view of the water heater.
Figure 2.1
Cut-away view of the water heater
IMD-0240
Legend:
(1) flue gas discharge
(2) air supply
(3) fan
(4) top box
(5) anodes
(6) flue tubes
(7) flue baffles
(8) hot water tank
(9) insulation layer
(10) air restrictor
(11) cleaning opening
(12) cold water inlet
(13) drain valve
(14) combustion chamber with air
distribution plate
(15) bar burners/burner tray
(16) hot water outlet
(17) control thermostat
(18) air pressure switch
(19) high-limit thermostat
(20) high-limit thermostat sensor
(21) safety thermostat
(22) safety thermostat sensor
(23) frost thermostat
(24) burner control
(25) frost thermostat sensor
(26) control thermostat sensor
(27) flame probe
(28) pilot burner
(29) spark igniter
(30) gas control
