Final Procedures After Maintenance - Watts AERCO Modulex EXT Commercial Series User Manual

Modulex EXT Commercial Series Boilers User Manual
CHAPTER 8: Maintenance Schedule
Reassembling the Burner Modules – Continued
4. Proceed with reassembly, performing whichever disassembly operation was chosen (all or
individual method) in reverse order.
a) Lower burner assembly
b) Reinstall gas collector tubes to the gas manifold tube.
c) Reinstall nuts "A," "C" and "B" screws to secure burner assembly to boiler body.
NOTE:
Tighten the burner bolts with a torque of 9.5 ft-lbs (13 Nm).
d) Reassemble rubber hoses to the air intake manifold, place manifold onto the blowers,
then reattach tension spring clip to left and right ends of manifold.
e) Proceed to section 8.14 for final procedures before returning boiler to service.

8.14 FINAL PROCEDURES AFTER MAINTENANCE

Before returning the boiler to service, the following procedures must be performed:
1. Before lighting the boiler ensure the condensate line has been filled with water (Figure 8-1).
2. Ensure the seal between the gas supply pipe and the gas collection tube flange are tight. To
do this, open the external gas valve and bubble check for leaks using a soap solution.
3. When a single burner is ignited, check immediately to ensure that the gas valve and the
relevant premixing chamber are operating correctly.
4. Perform the combustion gas analysis and check all parameters (see section 4.33).
5. Make sure that all the pressure test nipples, previously opened, have been closed.
OMM-0095_0H
GF-139
Final Procedures after Maintenance
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913
Phone: 800-526-0288
Page 135 of 144
09/15/2017