MODULEX EXT 321, 481, 641, 802, 962, 1123 BOILERS
Installation, Operation & Maintenance Manual
OMM-0087_0F AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 129 of 146
GF-143 Phone: 800-526-0288 07/13/15
Disassembling the Boiler for Maintenance – Continued
6. Remove the red hoses (quantity depends on model) from bottom side of manifold (Figure 7-
10), then lift entire manifold from the unit.
Figure 7-10: Removing Red Hoses and Manifold from Unit (Step 6)
Figure 7-11: Removing Gas Valve Connector from All Gas Valves (Step 7)
7. On each gas valve, unscrew the Gas Valve Connector with a Phillips head screwdriver.
Remove connector (Figure 7-11) from the side of each gas valve.
Air Intake
Manifold
Hoses from
Lift out manifold after
removing red hoses.
Remove Connector
Retention Screw
Gas Valve
Connector
(remove from