Diaphragm (Bladder) Expansion Tank; Closed-Type (Standard) Expansion Tank; Circulator; Sizing Primary Piping - Prestige Solo 110 Installation And Maintenance Manual

Boiler Piping
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 (Bladder) Expansion Tank

Always install an automatic air vent on the top
of the air separator to remove residual air from
the system.

Closed-Type (Standard) 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.
CAUTION
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 is supplied with a Central
Heating CH circulator that is pre-wired to
allow for domestic hot water priority and to
provide circulation for the freeze protection
feature of the boiler control. See Graph 1 on
page 62 for pressure drop and minimum flow
rate through the boiler.

Sizing Primary Piping

See Fig. 9 through 13, pages 20 - 23, for rec-
ommended piping arrangements based on vari-
ous applications. In all diagrams, the space
heating system is isolated from the PRESTIGE
using primary / secondary piping connections.
Size the piping and system components
required in the space heating system, using rec-
ognized design methods.

Domestic Hot Water System Piping

The PRESTIGE is provided with a separate
boiler connection for Domestic Hot Wa t e r
(DHW) systems (1" NPT.). This connection
ensures priority is given to the production and
recovery of the DHW.
The piping for the DHW is separate from the
boiler system piping and does not require a pri-
mary / secondary piping configuration.
See Fig. 9 , page 20 for recommended piping to
a DHW system.
NOTICE
If an indirect fired DHW is not planned
cap the (1" NPT) DHW connection with
an adequate amount of pipe dope to
ensure a seal. See Fig. 5 on page 14 for
location of DHW connection
To wire the DHW circulator to the boiler con-
trol module reference Section VIII - External
Wiring.

System Piping - Zone Circulators

Connect the PRESTIGE to the system piping
as shown in Fig. 10 page 21 when zoning with
zone circulators. The circulator supplied with
the PRESTIGE should not be used for a heat
zone. It should supply only the primary loop.
Install a separate circulator for each zone of
space heating.
NOTICE
To ensure adequate flow rate through
the PRESTIGE, maintain a minimum 1
inch diameter on the system piping con-
necting the unit to and from the primary
/ secondary connection.
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