IBC BTI 30 - Page 18

INSTALLATION AND OPERATION INSTRUCTIONS
18
BT INDIRECT SERIES – WATER HEATERS
NOTE
When using zone valves in a
multi-zone heating system,
careful consideration must
betakentoensurethatow
rates do not decrease below
the boiler’s rated minimum
owrequirement.Bypass
arrangements (pressure
activated bypass, three way
valves, etc.) may be required
toensureadequateow
under low load conditions.
BT Series Indirect
Hot Water Tank
120VAC
(HOT) (COM)
Heating circ.
AC in
Primary
Pump
Boiler
Pump
yellow
L
N
L
N
white
white
black
DHW cir c.
Fa ctory-installed
Ganged endswitches from
Heating zone valves
Aquastat -dry contact
G
Field-wiring
Bundle
Select one: either a dry-contact
Aquastat to a Therm. connection
or a 10K Ohm thermister to the
DHW Sensor connection.
Figure 4: Piping Suggestion for IBC SL Series Small Boilers with Side Connections
Figure 5: Wiring Suggestion for IBC Boilers