Instinct Installation Manual

CHAPTER 4 - BOILER PIPING
19
4.7.5 Sizing Primary Piping
See Fig. 15 on page 29 and Fig. 8 on page 17 through
to Fig. 9 on page 18 and Fig. 21 on page 33 through Fig.
22 on page 34 , for recommended piping arrangements
based on various applications. Size the piping and system
components required in the space heating system using
recognized design methods.
4.7.6 Domestic Hot Water System Piping
See Fig. 21 on page 33 through Fig. 22 on page 34
for recommended piping to a DHW system. This
recommended piping configuration ensures priority is
g iv en t o the pr oduc tion and r ecov er y of DHW .
The piping for DHW is separate from the boiler system
piping and does not require a primary / secondary
piping configuration.
To wire the DHW circulator to the boiler control module,
reference Chapter 8 on page 35 .
4.7.7 System Piping – Zone Circulators
Connect the INSTINCT Solo to the system piping as
shown in Fig. 21 on page 33 when zoning with zone
circulators.
The installer must provide a separate circulator for each
zone of space heating.
NOTICE
To ensure an a dequate flow rate through the
INSTINCT 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.
4.7.8 System Piping – Zone Valves
Connect the INSTINCT Solo to the system piping as shown
in Fig. 21 on page 33 when zoning with zone valves.
NOTICE
To ensure an adequate flow rate through the INSTINCT
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.
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 flow rate through the boiler is maintained at all
times. The circulator must be sized to overcome the pres-
sur e dr op thr ough the syst em as w ell as the INSTINC T S olo .
See the Graphs in Chapter 19 on page 93 for pressure
drop and minimum flow rate through the boiler.
Fig. 21 on page 33 illustrates a multiple zone valve
system with a single system/boiler circulator. A by-pass
loop with a pressure differential valve must be installed
on the syst em piping .
Fig. 22 on page 34 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 . T his f eature r equir es
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.
NOTICE
DO NOT install a SMART indirect water heater along with
the INSTINCT Solo in systems with non-oxygen barrier
tubing.Failuretocomplywillresultin prematurefailure of
theSMARTindirectwater heater.
The boiler water supply temperature can be maintained
b y the INSTINC T S olo , pot entially eliminating the need f or
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
ensure that the primary supply temperature does not exceed
the maximum allowable temperature for the radiant tubing.
NOTICE
Theaddition of a high temperaturelimit is important
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
flow needed for the radiant system.
NOTICE
To ensure an adequate flow rate through the INSTINCT
Solo, the boiler supply and return piping size must be a
minim um of 1 inch for the INSTINCT S olo 110, 1- 1 / 4 inch
for the INSTINCTSolo 155/199.
CHAPTER 4