Giant UG40 - Page 44

44
Natural gas and Propane
(LP) main burner with
igniter assembly for 40k
and 45k Btu/hr models
(item
15 in Figure 1).
41
43
39
36
38
40
37
35
42
Flare
Nut
††
†
Figure 51.
Natural gas and Propane
(LP) main burner with
igniter assembly for 58k,
62k, 72k & 76k Btu/
hr models (item
15 in
Figure 1).
Flare
Nut
††
41
43
39
36
38
40
37
35
42
†
Figure 52.
28
29
44
46
30
49
Shown with
Junction Box Cover
removed for clarity.
45
48
47
Figure 53.
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”.
*** Caution harness has 120 VAC In operation.
**** See
“Vent Pipe Installation” for more information.
† The orifice on Natural gas models has Right-hand
thread, the orifice on Propane (LP) models has Left-
hand thread.
†† For Natural gas models the Flare Nut has Right-hand
thread. For Propane (LP) models the Flare Nut has
Left-hand thread.