46
8.7 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 MAHF-75, 100, 125 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.
*125 Model shown - See Application Guide for sizes 75, 100
Note
Sensors used for this boiler are proprietary
to the manufacturer. Use of after market
sensors will diminish boiler performance.
8 - ELECTRICAL CONNECTIONS
FIGURE 8-7 Kt Indirect Storage Tank
8.9 Management of 0-10V Input
The functions with 0...10V regulator are activated by means of their parameters:
To enable 0-10V input change
P82=4
to
P82=3
,
When
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 heating setpoint is calculated in proportion to deviation from 3 to 10 V DC, to
give a setpoint that goes from minimum to maximum.
Terminal # 9 is negative (-), terminal #10 is positive (+).
P78=1
P78 = 2
Voltage
Temp Setting
75
100/115
125/150
165/205
°C
°F
kW
MBH
kW
MBH
kW
MBH
kW
MBH
0-3
OFF
3
25
77
4.9
16.6
4.9
16.6
6.4
22.0
8.6
29.5
4
32
90
7.3
24.9
8.4
28.9
10.7
36.5
14.4
49.0
5
40
104
9.7
33.3
12.0
40.8
14.9
51.0
19.9
68.0
6
49
120
12.2
41.6
15.4
52.4
19.2
65.5
25.5
87.0
7
57
135
14.7
50.0
18.5
63.1
23.4
80.0
31.1
106.0
8
65
149
17.1
58.3
22.2
75.7
27.7
94.5
36.6
125.0
9
73
163
19.5
66.6
25.3
86.2
31.9
109.0
42.5
145.0
10
80
176
21.2
75.0
27.4
93.6
36.9
125.0
48.1
164.0
240013503 REV A, [03/15/2022]
Summary of Contents for UTICA BOILERS MACF-115
Page 2: ...MACF 150...
Page 4: ...MAHF 125...
Page 77: ...73 A 1 MODEL 75 100 Heat Only APPENDIX A WIRING DIAGRAMS 240013503 REV A 03 15 2022...
Page 78: ...74 A 2 MODEL 125 Heat Only APPENDIX A WIRING DIAGRAMS 240013503 REV A 03 15 2022...
Page 79: ...75 APPENDIX A WIRING DIAGRAMS A 3 MODEL 165 Heat Only 240013503 REV A 03 15 2022...
Page 80: ...76 APPENDIX A WIRING DIAGRAMS A 4 MODEL 115 Combi 240013503 REV A 03 15 2022...
Page 81: ...77 A 5 MODEL 150 Combi APPENDIX A WIRING DIAGRAMS 240013503 REV A 03 15 2022...
Page 82: ...78 A 6 MODEL 205 Combi APPENDIX A WIRING DIAGRAMS 240013503 REV A 03 15 2022...
Page 117: ...33 PN 240012875 REV D 03 15 2022 MODEL 75 100 HEAT ONLY 75 100 HEAT ONLY WIRING DIAGRAM...
Page 118: ...34 PN 240012875 REV D 03 15 2022 MODEL 125 HEAT ONLY 125 HEAT ONLY WIRING DIAGRAM...
Page 119: ...35 PN 240012875 REV D 03 15 2022 MODEL 165 HEAT ONLY 165 HEAT ONLY WIRING DIAGRAM...
Page 120: ...36 PN 240012875 REV D 03 15 2022 115 COMBI WIRING DIAGRAM MODEL 115 COMBI...
Page 121: ...37 PN 240012875 REV D 03 15 2022 MODEL 150 COMBI 150 COMBI WIRING DIAGRAM...
Page 122: ...38 PN 240012875 REV D 03 15 2022 MODEL 205 COMBI 205 COMBI WIRING DIAGRAM...
Page 128: ...44 PN 240012875 REV D 03 15 2022 LOW WATER CUTOFF LOW WATER CUTOFF DETAIL NO NO YES...
Page 133: ...49 PN 240012875 REV D 03 15 2022 3 FAULT SOLUTION SECTIONS...
