Use and Care Manual

6 | P a g e
Temperature Adjustment Potentiometer - (L) and (S) Activation Models
The potentiometer allows the factory preset temperature of the heater to be changed in the field. The
potentiometer will adjust water temperature between 70°F and 125°F provided the wattage of the heater selected
is capable of producing the temperature increase at the requested flow rate. See Table 3 temperature chart for
each model to determine the temperature range of the heater installed.
When using the potentiometer please use the following operation instructions:
To increase temperature:
a. Loosen nut
b. Using a screwdriver, turn screw in small increments clockwise (to the right)
c. Once temperature of the water is acquired, tighten the nut
To decrease water temperature:
a. Loosen nut
b. Using a screwdriver, turn screw in small increments counter clockwise (to the left)
c. Once temperature is acquired, tighten the nut
Temperature Adjustment - (H) Activation Models
The H model is factory preset for 84°F only and is designed for tepid water use. See Table 3 temperature chart for
each model to determine the temperature range of the heater installed.
TABLE 3 – Temperature Rise Chart
Model
Wattage
1Φ Voltage
°F Temp Rise @
1.5 GPM 2.5 GPM
R-48x/208
10,000
208
45
27
R-48x/240
11,500
220-240
52
31
R-58x/208
12,050
208
55
33
R-63x/208
13,100
208
60
36
R-48x/277
13,300
277
61
36
R-58x/240
13,900
240
63
38
R-68x/208
14,150
208
64
39
R-63x/240
15,100
220-240
69
41
R-75x/208
15,600
208
71
43
R-58x/277
16,050
277
73
44
R-68x/240
16,300
220-240
74
45
R-63x/277
17,450
277
79
48
R-75x/240
18,000
220-240
82
49
R-68x/277
18,850
277
86
51
R-75x/277
20,750
277
95
57
Microprocessor limits temperature increase according to the pre-selected outlet temperature
x = (L)-Low Activation
(S)-Standard Activation
(H)-High Activation