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P/N 472128 Rev. E 11-5-07
6
Knob Stopper
Screw A
OPERATING (CONTROLS)
Dual Temperature Control System
Operation (contd.)
For convenience and economy all MiniMax
®
CH
heaters are equipped with two thermostats on the
front of the heater control panel; see Figure 5.
THERMOSTAT KNOB STOPPER
Each thermostat is equipped with a mechanical
stop that can be locked or unlocked with use of a
screwdriver to prevent temperatures in excess of
that desired by the user; see Figure 6.
The maximum setting can be adjusted by
loosening the screw "A" and turning the stopper
dial to desired maximum setting. Lock the setting
by tightening the screw. The Mechanical stop is
under the knob. Ensure that the knob is stopping at the correct position when the knob is rotated clockwise
from a lower temperature position. (See Thermostat Adjustment.)
NOTE
To eliminate error due to piping heat losses, measure pool temperature with an accurate
thermometer directly at the pool or spa.
THERMOSTAT ADJUSTMENT
The knob with locking feature eliminates the need for
constant thermostat adjustments. Set the knob pointer to
the desired pool or spa temperature.
If further adjustment is needed, rotate the knob until the
desired temperature is obtained. This knob position
corresponding to your desired maximum pool or spa
temperature may now be preset (locked) by the knob
stopper which prevents the knob from being turned
beyond the maximum temperature you set.
POWER (THERMOSTAT SELECT) SWITCH
The Pool/Off/Spa switch allows the heater to be turned
off when heating is not desired.
1. “Pool” position - Maintains selected pool temperature.
2. “Off” position - Heater will not come on regardless of drop in pool or spa temperature.
3. “Spa” position - This allows separate control of spa water temperature or an alternate lower pool
temperature.
Figure 5.
Figure 6.