g. Reinstall all of the screens in the faucets.
h. Check the system for leaks. Repair as required.
3.2 Boiler water piping
Warning
Do not use automotive-type ethylene or other types of automotive glycol antifreeze, or
undiluted antifreeze of any kind on the boiler water side of the system. This may result in
severe boiler or tank damage. Installers are responsible for ensuring that glycol solutions
are formulated to inhibit corrosion in hydronic heating systems of mixed materials.
Improper mixtures and chemical additives may cause damage to ferrous and non-ferrous
components as well as damage to non-metallic, wetted components, normally found in
hydronic systems.
Ethylene glycol is toxic, and may be prohibited for use by codes applicable to your
installation location. For environmental and toxicity reasons, IBC recommends only using
non-toxic propylene glycol and non-toxic boiler water additives of any kind.
1. Determine where the boiler, the space heating, and the water heater connections should be
made based on the type of piping system that is either in place, or is to be installed for a new
hydronic system installation. See section
for guidance.
2. It is recommended that minimum size 1" pipe be used on the water heater zone to ensure
adequate flow, larger sizes min 1½".
Note
The piping drawings in Section 8.0 are simple guides to a successful installation. Many
necessary components are 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) in this manual are only part of the finished design.
You must carefully read and follow these installation instructions, and just as importantly,
the installation instructions for the boiler model you are using with the water heater.
3.3 Zone circulator system
The water heater connection labeled “In from Boiler” should be piped to the boiler supply piping after
the air purger and before the space heating takeoffs - for primary/secondary systems, see primary
loop space heating piping in
.
For parallel piping, see
. 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.
22
Section: Piping
Summary of Contents for INTERSTAR IWT Series
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