Instinct Installation Manual

CHAPTER 4 - BOILER PIPING
20
4.7.11 System Piping – Special Application
If the boiler is used in conjunction with a chilled water/
medium system, the boiler and chiller must be piped in
parallel. Install flow/check valves to prevent the chilled
medium from entering the boiler.
If the boiler is used to supply hot water to the heating
coils of an air handler where they may be exposed to
chilled air circulation, install flow/check valves or other
automatic devices to prevent gravity circulation of the
boiler water during cooling cycles.
4.7.12 System Piping – Multiple Units Installation
Use a balanced manifold system as the primary /
secondar y connec tion t o the space heating piping .
F or the space heating piping , r efer t o the applications
mentioned in this manual or use recognized design
methods.
4.8. INSTINCT Combi Boiler System Piping
System
Supply
T P
Cold
Water
Fill
System
Return
Fig. 10 - INSTINCT Combi Near Boiler Piping - Hydraulic Separator
BEST PRACTICE
It is recommended on all piping applications 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 uses flow/check
valves with weighted seats at or near the INSTINCT
Combi to prevent gravity circulation.
CHAPTER 4