Optional Electrical Connections - UTICA BOILERS MAH-125 Installation, Operation And Maintenance Manual

8.7 Optional Electrical Connections

A. Outdoor Temperature Sensor
To connect this accessory, see figure 8-5, terminals 4-5, and
instructions supplied with sensor.
B. Setting "Kt" Climate Curve
When external sensor is connected to boiler, the electronic
board adjusts the flow temperature calculated according to set
Kt coefficient.
Select required curve by pressing
chart below for selecting the appropriate curve (00 to 90).
Flow temp
FIGURE 8-6 Kt Climate Curves
90 Is Default.
NOTE:
Temperatures below -40 °F (-40 °C), maximum heating flow temperature set point no longer increases, curves shown on graph
become horizontal.
8 - ELECTRICAL CONNECTIONS
as indicated in
Outside temp
36
FIGURE 8-5 Outdoor Sensor Connections
240011941 REV B, [03/31/2018]