A.O. Smith 300 Series, Инструкция по эксплуатации

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10
FEATURES AND COMPONENTS FEATURES AND COMPONENTS
* CAUTION HARNESS HAS 120 VAC. IN OPERATION.
** See
Venting Installation (page 23) and Condensate Piping (page
21)
for more information.
4
6
7
5
9
**13
**14
Caution: This access panel
covers a 2” NPT plug that
was required during the man-
ufacturing of this water
heater. This 2” NPT flange is
not a cleanout fitting, remov-
ing the 2” NPT plug and using
this fitting as a cleanout
could void your warranty.
Access
Panel
Vacuum Relief
Valve
Figure 3. 50 Gallon Unit
1: Central Control Board (CCB) Enclosure
2: Blocked Intake Switch
3: Blocked Outlet Switch
4: Blower Assembly
5: Burner Assembly
6: Flame Sensor
7: Igniter Assembly
8: Junction Box
9: Gas Control Valve Assembly
10: UIM (user interface module)
11: Top Plastic Enclosure 12: Display Enclosure
** 13: Exhaust Elbow Assembly
** 14: Condensate Drain Outlet
15: Enable / Disable Switch
16: Hot Water Outlet
17: Gas Supply
18: Main Manual Gas Shutoff Valve
19: Union
20: Inlet Water Shutoff Valve
21: Cold Water Inlet
22: Inlet Dip Tube 23: T/P Relief Valve
24: Rating Plate
25: Labels
26: Drain Valve
** 27: Vent Terminal
28: Drain Pan
29: Anode Rod
30: Insulation
31: Temperature Probe
32: Access Door
33: Spark Module