Page 69
Brute Elite Boilers and Water Heaters
about the “time of Day” function
If the “time of day” function is enabled, the control
system can be set to maintain different temperatures
for central heat and domestic hot water (other than
the normal setpoints) in the system at certain times
of the day. Normally this function is used to switch
to lower temperatures at night, when the central
heating or domestic hot water demand is reduced.
When the controller acting as the Lead/Lag Master
receives a time of day input, the controller shifts
to the special setpoints entered for central heat and
domestic hot water.
The input for the Time of Day function must be
wired to pins 2 and 3 on connector J10.
fig. 90 – Connections for “time of Day” function
Job J - Install the System Sensor and
adjust the Setpoint
(This is a Lead/Lag function – do this once for the whole Lead/
Lag system. Make the connections to the controller set up as the
Lead/Lag Master – usually the Primary controller on Boiler 1.)
1. Install the System sensor at the location shown
in Fig. 91. Connect the System sensor to the
System terminals on the controller acting as
the Lead/Lag Master (usually the Primary
controller on Boiler 1.) Use terminals 3 and 4
on TB6.
2. Adjust the Lead/Lag Central Heat Setpoint
to the desired temperature to be used by the
system.
How to get there – Adjust CH Setpoint
Home Page <Press View Lead Lag button> Lead Lag
Screen <Press Lead Lag Master button> Lead Lag
Screen <Press Configure button> Lead Lag Master
Configuration Screen
Line 2 = CH Setpoint
fig. 91 – mounting location for System Sensor
Job K - Set the lead lag outdoor reset and
Warm Weather Shutdown
(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.)
For more information on the outdoor reset function,
see the explanation which follows.
1. Install the outdoor air temperature sensor and
make the connections to the outdoor air sensor
terminals on the controller acting as the Lead/
Lag Master (usually the Primary controller on
Boiler 1.) Use terminals 1 and 2 on TB7.
table 16 – Base load Settings
Number
of boilers
Installed
Base load min.
1
65%
2
50%
3
30%
4
30%
Pins 2 and 3 on
connector J10
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...
