19
CHAPTER 4
4.7.5 Sizing Primary Piping
See Fig. 12 on page 24 through Fig. 14 on page 26,
for recommended piping arrangements based on vari-
ous applications. Size the piping and system compo-
nents required in the space heating system using recog-
nized design methods.
4.7.6 Domestic Hot Water System Piping
See Fig. 12 on page 24 through Fig. 14 on page 26
for recommended piping to a DHW system. This recom-
mended piping conguration ensures priority is given
to the production and recovery of DHW.
The piping for DHW is separate from the boiler system
piping and does not require a primary / secondary pip-
ing conguration.
To wire the DHW circulator to the boiler control mod-
ule, reference Chapter 8 on page 45.
4.7.7 System Piping – Zone Circulators
Connect the INSTINCT Solo to the system piping as
shown in Fig. 13 on page 25 when zoning with zone
circulators.
The installer must provide a separate circulator for each
zone of space heating.
To ensure an adequate flow rate through the
INSTINCT Solo, the boiler supply and return pip-
ing size must be a minimum of 1 inch for the
INSTINCT Solo 110, 1-1/4 inch for the INSTINCT
Solo 155/199.
4.7.8 System Piping – Zone Valves
Connect the INSTINCT Solo to the system piping when
zoning with zone valves.
To ensure an adequate flow rate through the
INSTINCT Solo, the boiler supply and return pip-
ing size must be a minimum of 1 inch for the
INSTINCT Solo 110, 1-1/4 inch for the INSTINCT
Solo 155/199.
NOTICE
NOTICE
4.7.9 System Piping – Through Boiler
Primary / secondary piping is preferred, but is not required
for smaller systems (1 to 3 zones) provided that at least the
minimum ow rate through the boiler is maintained at all
times. The circulator must be sized to overcome the pres-
sure drop through the system as well as the INSTINCT Solo.
See the Graphs in Chapter 19 on page 101 for pressure
drop and minimum ow rate through the boiler.
Fig. 13 on page 25 illustrates a multiple zone valve
system with a single system/boiler circulator. A by-pass
loop with a pressure dierential valve must be installed
on the system piping.
Fig. 14 on page 26 illustrates a single zone system
utilizing the boiler circulator as the system circulator.
4.7.10 System Piping – Radiant Heating
The heat exchanger design of the INSTINCT 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 INSTINCT Solo heat exchanger allows
the installation of the boiler on systems with non - oxygen
barrier tubing.
DO NOT install a SMART indirect water heater along
with the INSTINCT Solo in systems with non-oxygen
barrier tubing. Failure to comply will result in prema-
ture failure of the SMART indirect water heater.
The boiler water supply temperature can be maintained
by the INSTINCT Solo, potentially eliminating the need for
a mixing system to achieve the desired temperature if all
zones of heat require the same temperature setpoint.
It is recommended to install a high temperature limit to en-
sure 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 INSTINCT 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
ow needed for the radiant system.
To ensure an adequate flow rate through the IN-
STINCT Solo, the boiler supply and return piping
size must be a minimum of 1 inch for the INSTINCT
Solo 110, 1-1/4 inch for the INSTINCT Solo 155/199.
NOTICE
NOTICE
NOTICE
CHAPTER 4 - BOILER PIPING
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