38
8.8 Indirect Storage Tank
A
Heating system
B
Three way diverter valve
C
Heating water flow
D
Heating supply to DHW indirect storage tank coil
E
Heating water return
F
Tank
G
Optional 10k Ω DHW priority sensor
Boilers
DCBF-125 & 165
can be electrically connected to
indirect storage tank as follows:
•
Connect DHW priority
10K
Ω
sensor NTC to terminals
3-4
on terminal block
M2
.
• Insert
10K
Ω
NTC sensor element in the sensor well of
indirect storage tank.
•
Verify exchange capacity of the storage boiler coil is
appropriate for boiler power.
•
Adjust DHW tempe95 °F...+140 °F (+35
°C...+60 °C) by pressing
on boiler Control.
IMPORTANT: set parameter P03 = 05 as described in:
"PARAMETER SETTINGS".
*125 Model shown
Note
Sensors used for this boiler are proprietary to
the manufacturer. Use of after market sensors
will diminish boiler performance.
8 - ELECTRICAL CONNECTIONS
FIGURE 8-7A Kt Indirect Storage Tank
8.9 Management of 0-10V Input
P78=1
P78 = 2
0-10V DC Electrical Signal Input
Heating Flow Setpoint Temperature
Central Heating - Heat Input (Gross)
(V)
(°F)
(°C)
(kW)
(Btu/h)
0...3
OFF
3
77
25
4.9
16,650
4
95
35
8.4
28,900
5
108
42
12.0
40,800
6
124
51
15.4
52,400
7
140
60
18.5
63,050
8
154
68
22.2
75,650
9
167
75
25.3
86,200
10
176
80
27.4
93,550
The functions with 0...10V regulator are activated by means of their parameters. When the function is enabled (
P82
=3)
and
P78
=1, the input manages the heating set point temperature directly; when
P78
=2, the input manages the heating
power input directly. Demand is activated above 3V and the heating setpoint is calculated in proportion to deviation from 3
to 10 V DC, to give a setpoint that goes from minimum to maximum.
* See "Application Guide" for details on using a DHW tank
aquastat.
240012879 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...
