Outdoor Temperature Sensor; Boiler Control Panel - Dunkirk DCC-150 Installation, Operation & Maintenance Manual

Accessories:
1. Outdoor Temperature Sensor Kit - BD710487302V
Use Outdoor Sensor Kit with Heating Only or Combi Boilers.
Wire Control to boiler M2 terminal strip terminals #4 and #5
as shown below.
Install/locate Control according to instructions supplied
with sensor kit and Installation, Operation and Maintenance
Manual (IOM).
Setting "Kt" Climate Curve:
Start boiler in CH mode. Depress CH control button once.
Boiler control will recognize installed OAS sensor. Display
will change to show current default "Kt" value. Note display
value.
When operation in CH mode, Kt value setting will over
ride maximum CH boiler control set point based on current
outdoor temperature.
• Refer to applicable °F (or °C) chart,
• Identify Kt range that will satisfy the desired boiler
delivery temperature based on average (extreme)
outdoor temperature range expected for climate location.
Flow Temp
For temperatures below -40°F (-40°C), maximum heating flow temperature set point no longer
Note
increases and curves on the graph become horizontal.
ACCESSORIES
Outside Temp
°C
90 Is Default.
• Use lower value of range as the desired Kt value.
(example): to deliver 186°F water @ OT of -20°F = Kt range is 90 thru
25. Select 25.
• To change"default" Kt value on boiler control use +/- CH
Heating buttons.
When scolling has stopped, boiler will automatically "SAVE"
value as new Kt defalt value and automatically return to CH
mode when no Kt adjustment activity is sensed. Kt values can
be changed in +/- 1 point increments.
To return to check or change current Kt "default value -
depress one of the CH setpoint adjustment buttons (once),
while in any heating or standby mode. Adjust Kt value to
obtain desired comfort level.
28
°F

Boiler Control Panel

PN 240011430 REV G, [03/31/18]