Page 65
Brute Elite Boilers and Water Heaters
Boiler 1
(Lead/Lag Master)
Boiler 2
Secondary Primary
TB9, pin 7
connect to
TB9, pin 1
TB9, pin 8
connect to
TB9, pin 2
TB9, pin 9
connect to
TB9, pin 3
TB9, pin 10 connect to
TB9, pin 4
TB9, pin 11 connect to
TB9, pin 5
TB9, pin 12 connect to
TB9, pin 6
3. Repeat the process for Boiler 2 and 3, and
Boiler 3 and 4. The connections to the other
boilers follow the pattern we just described.
Use Fig. 79 as your reference.
4. Connect the drain wires from all of the wire
assemblies together and ground the drain wire
on one end of the assembly only.
5. Turn on the power to all of the boilers when
you are finished.
Job I – Set the Parameters Used by the
lead/lag System
(This is a Lead/Lag function – do this once for the whole Lead/
Lag system. Use the controller set up as the Lead/Lag Master –
usually the Primary controller on Boiler 1.)
We have already explained how the Lead/Lag
Master controls the operation of the Lead/Lag
system. Your job at this point is to enter the control
values that the Lead/Lag system will use.
fig. 80 - Home Screen
1. From the Home screen (Fig. 80), press the
Lead Lag Master button. Figure 81 shows the
screen that follows.
fig. 81 – lead/lag master Screen
2. Press the Configure button. The display will
present the Lead/Lag Master Configuration
Screen (Fig. 82).
Fig. 82 – Lead/Lag Master Configuration
3. This screen shows the most important settings
for the Lead/Lag system. The settings can be
changed from this screen. Some of them will
require passwords.
Here are the settings on this screen:
Master enable -
Enabled = Lead/Lag system enabled
CH setpoint -
Setpoint for LL Central Heating
CH time of day setpoint -
Separate Time-of-Day Setpoint for Central
Heating (See the material on “About the
‘Time of Day’ Function at the end of this
section)
Summary of Contents for BNTH1000
Page 2: ...Bradford White Corp...
Page 12: ...Page 8 Bradford White Corp Fig 6 Dimensions BNT 1700...
Page 38: ...Page 34 Bradford White Corp Fig 21 Ladder Diagram...
Page 39: ...Page 35 Brute Elite Boilers and Water Heaters Fig 22 Wiring Diagram...
Page 40: ...Page 36 Bradford White Corp...
Page 52: ...Page 48 Bradford White Corp Fig 51 Connection Terminals...
Page 130: ...Page 126 Bradford White Corp Fig 141 Rear Panel BNT1000 Fig 142 Rear Panel BNT1700...
Page 131: ...Page 127 Brute Elite Boilers and Water Heaters Fig 143 Machine Frame BNT1700...
Page 132: ...Page 128 Bradford White Corp Fig 144 Front Panels and Covers BNT1000 and BNT1700...
Page 133: ...Page 129 Brute Elite Boilers and Water Heaters Fig 145 Burners and Combustion Chamber BNT1000...
Page 134: ...Page 130 Bradford White Corp Fig 146 Burners and Combustion Chamber BNT1700...
Page 136: ...Page 132 Bradford White Corp Fig 149 Burner Detail BNT1700...
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Page 140: ...Page 136 Bradford White Corp This page intentionally left blank...