10 www.
americanwaterheater .com
328767-001
Natural gas and Propane main
burner with igniter assembly for
40k and 45k Btu/hr models
41
43
39
36
38
40
37
35
18
42
Figure 3
Natural gas and Propane
(LP) main burner with
igniter assembly for 58k,
62k, 72k and 76k Btu/hr
models
Flare
Nut
††
41
43
39
36
38
40
37
35
42
Figure 4
28
29
44
46
30
49
Shown with
Junction Box Cover
removed for clarity.
45
48
47
Figure 5
Vacuum relief valve
install per local
codes (not supplied
with heater).
Figure 6
Notes:
*
Items not supplied with the water heater.
** The side recirculation loop connections may not be
used as the primary water inlet and outlet connections.
See “Combo Heating Inlet And Outlet Side Taps”
below.
*** Caution harness has 120 VAC In operation.
**** See “Vent Pipe Installation” for more information.
REPLACEMENT PARTS AND DELIMING PRODUCTS
Replacement parts and recommended delimer may be
ordered through authorized servicers or distributors. When
ordering parts, provide complete model and serial numbers
(see rating plate), quantity and name of part desired.
Standard hardware items may be purchased locally.
COMBO HEATING INLET AND OUTLET SIDE TAPS
Models equipped with Combo Heating capabilities have
the two side plumbing taps plugged (item 7 and item 10 in
Figure 1 and see also Figure 7 & Figure 8). If the heater
is to be installed in a Combo Heating application, these
plugs must be removed.
