TriangleTube Prestige Excellence Part 1 - Manual (Page 24)

The expansion tank must be located as shown
in the piping diagrams on pages 19 through 21
or as per recognized design methods. Refer to
the expansion tank manufacturer instructions
for additional installation details.
Connect the expansion tank to an air separator
only if the air separator is located on the suc-
tion side (inlet) of the system circulator.
Always locate and install the system fill con-
nection at the same location as the expansion
tank connection to the system.
Diaphragm Expansion Tank
Always install an automatic air vent on the top
of the air separator to remove residual air from
the system.
Closed-Type Expansion Tank
It is recommended to pitch any horizontal pip-
ing upwards toward the expansion tank 1 inch
per 5 feet of piping. Use 3/4” piping for the
expansion tank to allow air within the system
to rise.
DO NOT install automatic air vents on a
closed-type expansion tank system. Air
must remain in the system and be
returned to the expansion tank to pro-
vide an air cushion. An automatic air
vent would cause air to be vented from
the system resulting in a water-logged
expansion tank.
Circulator
The PRESTIGE Excellence is supplied with a
boiler circulator that provides circulation for
space (CH) heating and domestic (DHW) hot
water production. See Graph 2 on page 70 for
pressure drop and minimum flow rate through
the boiler.
Sizing Primary Piping
See Fig. 9 through 13, pages 19 - 21, for rec-
ommended piping arrangements based on vari-
ous applications.
Size the piping and system components
required in the space heating system, using rec-
ognized design methods.
System Piping - Zone Circulators
Connect the PRESTIGE Excellence to the sys-
tem piping as shown in Fig. 9 page 19 when
zoning with zone circulators.
The installer must provide a separate circulator
for each zone of space heating.
To ensure adequate flow rate through
the PRESTIGE Excellence, maintain a
minimum 1 inch diameter on the system
piping connecting to the boiler.
System Piping - Zone Valves
Connect the PRESTIGE Excellence to the sys-
tem piping as shown in Fig. 10 page 19 when
zoning with zone valves. The primary / sec-
ondary piping ensures that the boiler loop has
sufficient flow.
To ensure adequate flow rate through
the PRESTIGE Excellence, maintain a
minimum 1 inch diameter on the system
piping connecting to the boiler.
NOTICE
NOTICE
CAUTION
Boiler Piping
17