AERCO Modulex EXT 321 - 1123 - Manual (Page 127)

MODULEX EXT 321, 481, 641, 802, 962, 1123 BOILERS
Installation, Operation & Maintenance Manual
To disassemble the unit for maintenance, do the following:
Disassembling the EXT Boiler for Maintenance
1. Switch OFF external electrical power and CLOSE the gas supply valve upstream from the
boiler, and ensure it is completely closed.
2. Unlatch and raise the top lid (Figure 7-4).
3. Remove screws from top of unit holding the rear and side panels in place (Figure 7-5).
Remove panels by tilting away from unit, then lifting up and out (Figure 7-6). Note, the front
and rear panels must be removed before the side panels can be removed.
Figure 7- 4: Unlatch Top Lid (Step 2)
Figure 7-5: Remove Screws at Edges and Remove Side and Rear Panels (Step 3)
Figure 7-6: Remove Panels (Step 3) Figure 7-7: Remove Flue Assembly (Step 4)
NOTE
Commercial units have a special
latch kit to hold up the top plate,
Unical part number 00362418
OMM-0087_0E AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 127 of 148
GF-143 Phone: 800-526-0288 12/01/14