Pool Water High Limit Switch Connections; Unit Startup; Operation; Section 10: Boiler Maintenance - Watts Aerco AM Series Operation & Maintenance Manual

AM Series Pool Heater User Manual
SECTION 8: UNIT STARTUP

7.2.2 Pool Water High Limit Switch Connections

The pool water high limit switch is field supplied and installed downstream of heat exchanger in
the supply hot pool water piping (see Figure 5-5a and 5-5b). When this switch senses a pool
water temperature above the allowed maximum, the AM boiler is shut down. To wire this switch
to the boiler, follow the instructions below:
1. Remove the boiler top cover per Section 10.14 of AM Series User Manual GF-146.
2. Connect the leads of a two-conductor cable (with a minimum cross section of #18 AWG)
to the pool water high limit switch and run the cable to the boiler electrical junction box.
AERO offers an auto-reset pool water high limit switch PN 64115 as an optional
accessory; refer to the pool design temperatures and follow installation instructions that
comes with the high limit switch.
3. Open the boiler electrical junction box cover and connect the leads of the cable to
terminals R1 and R2 (see Figure 7.2).
SECTION 8: UNIT STARTUP
WARNING!
The technician in charge of unit start-up must refer to Section 8 of the AM Series User Manual,
GF-146, for start-up information and instructions, including combustion calibration and other
necessary adjustments, procedures, and warnings. Attempting any of these procedures
without reference to GF-146 risks creating a dangerous situation and/or damaging equipment
or property.
SECTION 9: OPERATION
REFERENCE NOTE:
For all information regarding the detailed operation of the unit via the front panel controls and
display of the boiler, the technician who operates the pool heater must refer to Section 9 of
the AM Series User Manual, GF-146.

SECTION 10: BOILER MAINTENANCE

REFERENCE NOTE:
For all information regarding the detailed 12-month and 24-month maintenance of the boiler,
the technician who maintains the pool heater must refer to Section 10 of the AM Series User
Manual, GF-146.
OMM-0111_B: • GF-146-P • 10/29/2019 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 40 of 47