11
INSTALLATION AND OPERATION INSTRUCTIONS
BT INDIRECT SERIES – WATER HEATERS
for primary/secondary systems, see primary loop space heating piping on
Figure
4: Piping Suggestion for IBC SL Series Small Boilers with Side Connections.
For parallel piping, see
Figure 2: Generic Boiler Piping Schematic – Zoned by
Circulator.
Mount the water heater circulator as close as is practicable to the
water heater, and make sure the flow arrow points toward the water heater. The
use of shut-off valves is recommended for future service convenience.
The water heater connection labeled “BOILER RETURN” should be piped to the
boiler return piping as close to the boiler as possible and after any flow control or
check valves in the space heating return piping. The use of a union and a shut-off
valve is recommended. The use of a check valve is required to prevent back flow
through the water heater during operation of the space heating system.
3.4 Zone Valve System
It is recommended that minimum size 1” pipe and 1” full-port zone valves with a
high CV be used on the water heater zone to ensure adequate flow.
The water heater connection labeled “BOILER SUPPLY” should be piped to the
boiler supply piping after the air purger and grouped with the other zone supplies.
The use of a shut-off valve is recommended for future service convenience.
The water heater connection labeled “BOILER RETURN” should be piped to the
boiler return piping and grouped with the other zone returns. The use of a union
and a shut-off valve is recommended. The use of a check valve is required to
prevent back flow through the water heater during operation of the space heating
system.
NOTE
The piping drawings in
Section 8.0 of this manual
are simple schematic guides
to a successful installation.
There are many necessary
components not shown,
and details such as thermal
traps are left out so the
drawings have greater clarity.
We require that our boilers
and tanks be installed by
licensed and experienced
trades people who are familiar
with the applicable local
and national codes. System
design is to be completed
by an experienced hydronic
designer or Engineer.
The application drawing(s)
shown in this manual are only
part of the finished design.
It is absolutely neccessary
to carefully read and follow
these installation instructions,
and just as importantly, the
installation instructions or the
boiler model you are using
with this water heater.
