AERCO KC1000 Heater w/Mod-Box Controller - Manual (Page 29)

INITIAL START-UP
24
200 o F water temperature. Do NOT attempt to
adjust it’s set point.
To adjust the lower over temperature switch limit
switch:
1. Remove the wing nut from the top center of
the shell cap. Lift the cap off the shell.
2. The two over-temperature limit switches are
located at the top of the shell (see Fig. 4.8).
Do not adjust the upper switch. It has been
factory preset. Adjust the lower switch 20
o
F
higher than the unit’s set point.
3. Replace the shell cap and wing nut.