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5)
Connecting BB100C to Type III MCBA Equipped boilers (Figure 7.4):
a.
Connect the boiler circulator hot to the red lead and neutral (white) in the Boiler's J-Box.
b.
Connect the three way zone valve in the BB100I to the blue lead and neutral (white) in the boiler's J-box. If
the system has a single system circulator having a draw of less than 1.5A, the system circulator can be wired in
parallel with the zone valve (after reprogramming the MCBA per part G of this manual, the zone valve will be
powered during a call for heat). Otherwise, a relay or zoning panel must be used to operate the system pump.
c.
The heating thermostat, or zoning panel boiler contacts, are connected to terminals 1&2 on the boiler.
d.
The BB100M/BB100C flow switch is connected to terminals 7&8 on the boiler. IWH thermostat contacts must
be "dry".
6)
Connecting BB100C to Sola Equipped boilers (Figure 7.5):
a.
Connect the boiler circulator to the terminals marked "BLR Pump" in the boiler's J-Box.
b.
Connect the three way zone valve in the BB100C to the terminals marked "DHW Pump" in the boiler's J-Box.
c.
Connect the system circulator to the terminals marked "Sys Pump" in the boiler's J-Box.
d.
Connect the heating thermostat, or zoning panel boiler contacts, to the "CH Stat" terminals on the left side of
the boiler's control compartment.
e.
Connect the BB100C flow switch to the "DHW Stat" terminals on the left side of the boiler's control
compartment.
Low Voltage
Wiring
Low Voltage
Terminal Strip
BK
WT
WT
R
BL
BWC J-Box
FIGURE 7.2: Wiring BB100I to Boiler equipped with Type III MCBA
Heating T-Stat
1
2
3
4
Line Voltage
Wiring
L1
L2
Boiler
Circulator
5
6
7
BK - Black
WT- White
R - Red
BL - Blue
ZV
BB100I 3-Way
Zone Valve
18
DHW T-Stat
8
Line Voltage Factory Wiring
Line Voltage Field Wiring
System Circulator
(Less Than 1.5 A )
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