Instinct Installation Manual

CHAPTER 4 - BOILER PIPING
17
System
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System
Supply
Cold
Wate
r Fill
BEST PRACTICE
• It is recommended on all piping app-
lications to utilize a primary/secondary
piping arrangement as a means to provide
freeze protection of the boiler, which is
an integral function of the boiler control.
Maintain at least the minimum boiler flow
rate shown in the Graphs of Chapter 19 on
page 93. For other piping arrangements,
contact Triangle Tube Technical Support or
consult other approved/recognized design
arrangements.
• On piping applications utilizing a single
zone or other recognized piping design
arrangements, it is recommended that the
installer usesflow/check valves with weighted
seats at or near the INSTINCT Solo to prevent
gravity circulation.
4.5. Additional Limit Control
If a separate Low Water Cut Off (LWCO) is required by
the local jurisdiction or when the boiler is installed
abo
v e the syst em piping , the f ollo wing guidelines
must be followed:
• The LWCO must be designed for water installations,
elec tr ode pr obe -t ype is r ecommended .
• The LWCO must be installed in a tee connection on
the boiler supply piping above the boiler.
• Wiring of the LWCO to the INSTINCT is done directly
onto the low voltage terminal strip. Reference
Fig. 22 on page 38 for available external limit
(manual or auto reset) terminals.
If the installation is to comply with ASME or Canadian
requirements, an additional high temperature limit
may be required. Consult local code requirements to
determine compliance. The limit should be installed as
follows:
• Install the limit in the boiler supply piping between
the boiler and any isolation valve.
• Consult heat exchanger for maximum temperature
set point.
• For wiring of the limit, reference Fig. 22 on page
38. Wire the limit to the manual reset terminals
on the low voltage terminal strip. An open manual
reset limit will require a manual reset of the control.
4.6. Backflow Preventer
• Use a backflow preventer valve in the make-up
water supply to the unit as required by local codes.
4.7. INSTINCT Solo Boiler System Piping
Fig. 8 - INSTINCT Solo Near Boiler Piping - Hydraulic Separator
T P
System
Supply
Cold
Water
Fill
System
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CHAPTER 4