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305, 505, 705 Indoor Manual 7
Temperature Ranges
This water heater will attempt to provide hot water at the temperature setting even when the water flow is varied
or when more than 1 tap is in use. The water heater can deliver water at only one temperature setting at a time.
The available temperatures for a given model are provided below.
Suggested temperatures are
• Kitchen 120 ºF (49º C)
• Shower 98º - 110º F (37º - 43º C)
These temperatures are suggestions only.
A temperature lower than 98º F (37º C) can be
obtained at the tap by mixing with cold water.
To change the temperature scale from Celsius to Fahrenheit or vice versa, press and hold the “On/Off” button for
5 seconds while the water heater is OFF.
Setting Controller to Mute
To eliminate the beeps when keys are pressed or to turn the beeps back on, press and hold both the ▲and ▼
buttons until a beep is heard (approximately 5 seconds).
The commercial controller is intended for commercial and hydronic applications only. If commercial controller
is used in a residential dwelling for a hydronics application, a mixing valve must also be installed to limit the
potable hot water temperature to a safe temperature. Water temperatures over 125º F (51º C) can cause
severe burns or scalding. Refer to the Danger Alert on water temperatures. The manufacturer shall not, in
any event, be liable for damages resulting from such misuse or misapplication.
** Commercial Controller
These settings require the commercial controller which is for commercial and hydronic applications requiring
higher temperatures. When the commercial controller is connected, these higher temperatures are available
on all controller models in the system.
Model
305
98 100 102 104 106 108 110 115 120
125
*
130
*
135
*
140
*
150
**
160
**
705
98 100 102 104 106 108 110 115 120 125 130 135 140
150
**
160
**
185
**
Temp in Celsius ºC 37 38 39 40 41 42 43 46 49 52 54 57 60 66 71 85
Temperature Settings Available (ºF)
505
98 100 102 104 106 108 110 115 120
125
*
130
*
135
*
140
*
150
**
160
**
185
**
* Re-setting the Maximum Temperature
Models 305 and 505 have a default maximum temperature of 120º F (49º C) and an option to increase the
maximum temperature to 140 ºF (60 ºC). Temperature settings from 125-140 ºF (52-60 ºC) are available by
setting dip switch 6 to ON in the SW1 bank of 8 dip switches.
Model 705 has a default maximum temperature of 140 ºF (60 ºC).