TriangleTube Instinct COMBI 155, Инструкция по установке и обслуживанию

Страница: 29 / 128

17
CHAPTER
4
CHAPTER 4 - BOILER PIPING
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
above the system piping, the following guidelines
must be followed:
• The LWCO must be designed for water installations,
electrode probe-type is recommended.
• 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. 28 on page 44 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 deter-
mine compliance. The limit should be installed as fol-
lows:
• 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. 28 on page
44. 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.
Fig. 9 - INSTINCT Solo Near Boiler Piping - Hydraulic Separator
Cold
Water
Fill
T P T P
System
Supply
System
Return
System Piping can be
attached on either side of the
Instinct Floor Standing Boiler
Manual
Air Vents
System Piping can be attached
on either side of the Instinct Floor
Standing Boiler