19
LT 90 Owners Manual
2015
Changing the Set Point
1. Press and hold the set button for 3 seconds or until the ˚C/˚F is
flashing. The number that appears is the Set Point. (Fig. 1)
2. Use the up or down arrow buttons to adjust the setting.
3. Press the set button to lock in the settings.
Changing the Hy
1. Press and hold the down arrow and set buttons until the display
reads Hy. (Fig. 2)
3. Press set button, the number displayed is the differential. (Fig. 3)
2. Release the arrow down and set buttons.
4. Press the arrow up or down button to adjust. (Fig. 4)
5. Press the set button. (Fig. 5)
6. The display will read ALL for approximately 30 seconds, (Fig. 5)
it will then return to the water temperature reading. (Fig. 6)
Changing the All
1. When the E.T.C. reads ALL from the previous step press the set
-button. The number that appears is the Low Alarm temperature.
2. To adjust the number press the up or down arrow.
3. Press the Set button to lock in the setting.
Definitions
Set Point-
The temperature at which the fan will shut down, until
hysteresis is achieved.
Hy aka Differential-
The amount, in degrees, the temperature has to
drop in order to start the fan.
ALL aka Low Alarm-
The temperature at which the furnace will
shut down. At which point the furnace should be reloaded and the
control is reset.
Note:
The temperature scale can be changed from Fahrenheit to
Celsius with the hot key from your WoodMaster Dealer.
WoodMaster Digital Aqua Stat
Factory Settings
Do not set your (SP) lower than your (ALL)!
CAUTION!!
(Fig. 1)
(Fig. 2)
(Fig. 3)
(Fig. 4)
(Fig. 5)
(Fig. 6)
Set Point (SP)
170° F
76.7°C
Differential (HY)
10° F
5.5°C
Low Alarm (ALL)
120° F
48.9°C
WoodMaster Digital Aqua Stat
Minimum and Maximum Factory Settings
Set Point (SP)
100° F to 180° F
38° C to 82° C
Differential (HY)
1° F to 45° F
1° C to 25° C
Low Alarm (ALL)
-67° F to 302° F
-55° C to 150° C
Note: The procedures are the same wether you are using degrees (F) or degrees (C).
Changing E.T.C. Settings
For units equipped with the XR30CX
E.T.C. Guide
Reference
