AERCO AM Series Boiler User Manual - Manual (Page 114)

AM Series Boilers and Water Heaters
CHAPTER 5 – OPERATION
Page 114 of 156 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0100_0B
PRI - 07/14/14
Ph.: 800-526-0288
GF-146
5.8 Blocked Flue Pressure Switch
The AM Series units are equipped with a blocked flue pressure switch safety that shuts down
the unit when the flue exhaust vent pipe is blocked. If this pressure switch shuts off the unit (Loc
25), do not
attempt to place the boiler in operation but rather, contact a qualified service agency
or technician able to reset the unit after checking for any potential dangerous situations.
5.9 Unit Shut-Down
To shut the unit down, perform the following:
Shutting Down the Unit
1. Turn the unit power switch to the OFF position.
2. Turn off all electrical power to the unit.
3. Close the manual shut-off valve (Figure 5-9), by turning the valve handle clock-wise. Do not
force.
Figure 5-9: Gas Safety Shut-Off Valve
• Do not drain the system, unless exposure to freezing temperatures will occur.
•
Do not drain the system, if it is filled with an antifreeze solution.