TriangleTube PRESTIGE Solo PA 110, Installation & Maintenance Manual

Page: 35 / 112

23
CHAPTER
4
CHAPTER 4 - BOILER PIPING
4.15. System Piping - Radiant Heating
The heat exchanger design of the PRESTIGE Solo allows
operation in a condensing mode. This feature requires
no regulation of the return water temperature back to
the boiler in radiant heating applications.
The design and construction of the PRESTIGE Solo heat
exchanger allows the installation of the boiler on sys-
tems with non - oxygen barrier tubing.
DO NOT install a SMART indirect water
heater along with the PRESTIGE Solo in sys-
tems with non-oxygen barrier tubing. Failure
to comply will result in premature failure of the
SMART indirect water heater.
The boiler water supply temperature can be maintained
by the PRESTIGE Solo, potentially eliminating the need
for a mixing system to achieve the desired temperature
if all zones of heat require the same temperature set
point.
It is recommended to install a high temperature limit to
ensure that the primary supply temperature does not
exceed the maximum allowable temperature for the
radiant tubing.
The addition of a high temperature limit is im-
portant if the PRESTIGE Solo is connected to a
domestic hot water system, which requires a
high primary supply water temperature.
Size the system piping and circulator to provide the
flow needed for the radiant system.
To ensure an adequate flow rate through the
PRESTIGE Solo, the boiler supply and return
piping size must be a minimum of 1 inch for the
PRESTIGE Solo 80/110, 1-1/4 inch for the PRES-
TIGE Solo 155/175/250 and 1-1/2 inch for the
PRESTIGE Solo 299/399.
NOTICE
NOTICE
NOTICE
4.16. System Piping - Special Application
If the boiler is used in conjunction with a chilled water/
medium system, the boiler and chiller must be piped in
parallel. Install flow/check valves to prevent the chilled
medium from entering the boiler.
If the boiler is used to supply hot water to the heating
coils of an air handler where they may be exposed to
chilled air circulation, install flow/check valves or other
automatic devices to prevent gravity circulation of the
boiler water during cooling cycles.
4.17. System Piping - Multiple Units Installation
Use a balanced manifold system as the primary / sec-
ondary connection to the space heating piping as
shown in
Fig. 13 on page 22 .
For the space heating piping, refer to the applications
mentioned in this manual or use recognized design
methods.