Instruction Manual

Benchmark 750/1000 Boiler Installation, Operation & Maintenance Manual
CHAPTER 4 – INITIAL START-UP
Page 66 of 192 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0082_0J
05/21/2014 Ph.: 800-526-0288 GF-130
Figure 4-4: Over Temperature Limit Switch Locations
4.6.1 Digital Alarm Switch Checks and Adjustments
The digital alarm switch settings can be checked or adjusted using the controls and display on
the front panel of the switch illustrated and described in Figure 4-5.
F
Alarm
RST
SET
Limit Control
Figure 4-5: Digital Alarm Switch Front Panel
PARTIAL FRONT VIEW WITH PANEL REMOVED
Digital Over-
Temperature
Limit Controller
Reset button for
Manual Temperature
Limit Switch
Manual
Temperature
Limit Switch
Adjustable
Temperature
Limit Switch
(auto-rest)