26
Accessories:
ACCESSORIES
1.
1k Ω
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
Outside Temp
Boiler Control Panel
Note
For temperatures below -40°F (-40°C), maximum heating flow temperature set point no longer
increases and curves on the graph become horizontal. Boiler set point will override sensor
setpoint.
°F
°C
• 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 scrolling has stopped, boiler will automatically “SAVE”
value as new
Kt
default 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 set-point adjustment buttons (once),
while in any heating or standby mode. Adjust
Kt
value to
obtain desired comfort level.
80 Is Default.
1k Ω
PN 240012875 REV. A [01/31/2020]
Summary of Contents for Dunkirk DCBF-125
Page 63: ...61 A 1 MODELS 125 Heat Only APPENDIX A WIRING DIAGRAMS 240012879 REV A 01 31 2020...
Page 64: ...62 APPENDIX A WIRING DIAGRAMS A 2 MODELS 165 Heat Only 240012879 REV A 01 31 2020...
Page 65: ...63 A 2 MODELS 150 Combi APPENDIX A WIRING DIAGRAMS 240012879 REV A 01 31 2020...
Page 66: ...64 A 4 MODELS 205 Combi APPENDIX A WIRING DIAGRAMS 240012879 REV A 01 31 2020...
Page 67: ...65 NOTES 240012879 REV A 01 31 2020...
Page 68: ...66 NOTES 240012879 REV A 01 31 2020...
Page 99: ...29 MODEL 150F Combi 150F FLOOR STANDING COMBI WIRING DIAGRAM PN 240012875 REV A 01 31 2020...
Page 101: ...31 205F FLOOR STANDING COMBI WIRING DIAGRAM MODEL 205F Combi PN 240012875 REV A 01 31 2020...
Page 106: ...36 Low Water Cutoff Detail LOW WATER CUTOFF NO NO YES PN 240012875 REV A 01 31 2020...
Page 114: ...44 NOTES PN 240012875 REV A 01 31 2020...
