Aerco MODULEX EXT 321 User Manual

MODULEX EXT 321, 481, 641, 802, 962, 1123 BOILERS
Installation, Operation & Maintenance Manual
Page 132 of 146 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0087_0F
07/13/15 Phone: 800-526-0288 GF-143
Disassembling the Boiler for Maintenance – Continued
12. Refer to Figure 7-16 and, using a 10mm socket wrench, remove the four bolts/nuts (white
arrows) to separate the Gas Collector Tube Flange from the gas supply piping.
Figure 7-16: Uninstall Gas Collector Flange from Gas Supply Piping (Step 13)
13. Refer to Figure 7-17 for location of burner assembly lifting screws. There is one at each end.
Elevate the burner assembly slightly until screw is lined up with the tab hole, then unscrew
the lift screw until it extends into the hole. Do this at both ends.
Figure 7-17: Location of Burner Assembly Lifting Screw (Step 14)
The burner assembly is elevated slightly to
line up this screw with the tab hole. Then,
using a 4mm open hex wrench, the screw is
extended into the hole.
(See Figures 7-17 & 7-18).
Tab
Hole

Aerco MODULEX EXT 321 Specifications

General

Brand	Aerco
Model	MODULEX EXT 321
Category	Boiler
Language	English