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Q. LIQUID PROPANE (LP) NOZZLE
To install the liquid propane (LP) nozzle, it is necessary to work on both the front and rear of the
burner. All necessary safety procedures should be followed to ensure that work can be performed
on both ends of the burner. The LP nozzle will appear different depending on the operating
capacity of the burner, see figure 15 for details. The following procedure should be followed when
installing the LP nozzle.
1. Check the primary tube for a choke ring (Figure 16). If the choke ring is present, it must be
removed to accept the LP nozzle.
2. Remove the access door from the rear of the burner air housing. Verify that a 2" NPT pipe
plug is installed in the primary air tube. (see Figure 17)
3. Loosen the lock nut and insert backplate from the LP insert.
4. From the front end of the burner, insert the nozzle and feed piping from the primary tube.
5. When properly installed, LP nozzle rests against the secondary air tube (Figure 16). NOTE:
On the ESII175B and ESII200B, the primary tube will contact a stop in the nozzle.
6. Align the nozzle as shown in Figure 16. Tighten setscrews on the nozzle and reinstall the
insert backplate and lock nut.
Figure 15. LP Nozzle Orientation
W9048
(NOT TO SCALE)
Page 32
MS-9
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