Circulator
Circulator w/Isolation Flgs
Air Separator
Auto Air Vent
24 vac Motorized Zone Valve
Backflow Preventer
Pressure Differential Bypass Valve
Diaphragm Style Expansion Tank
Heat Emitters (Baseboard, Radiant Manifolds, Radiant Panels)
Pressure Relief Valve
Union
Spring Check Valve
Ball Valve Style Boiler Drain
Full Port Ball Valve
Pressure Reducing Valve
Valve & Drain Assembly
Closed style
Expansion Tank
16
CHAPTER 4
CHAPTER 4 - BOILER PIPING
4.3. Boiler Air Vent
This boiler is supplied with a special automat-
ic air vent that will provide reliable operation
in purging air from the boiler. The hygroscopic
cap supplied with the automatic air vent MUST
remain tight at all times on the air vent body.
The hygroscopic cap has a membrane which
expands upon contact with water and seals
the air vent until the membrane dries up due to
new air forming in the air vent.
1. Make sure to fully tighten the cap on the air vent
during initial installation.
2. Never loosen the hygroscopic cap to allow air to escape
the air vent. Air will exit with the cap fully tightened in
place.
3. If the hygroscopic cap is not fully tightened, water
may leak from the cap. Simply tighten the cap se-
curely.
NOTICE
4.4. Low Water Cutoff Device
• The INSTINCT is equipped with a factory installed
pressure sensor type Low Water Cut O (LWCO).
• The minimum operating system pressure is 10 psi.
In the event that the pressure falls below 10 psi the
burner will deactivate until proper pressure has
been restored.
• Check local codes if a Low Water Cuto is required.
If so, determine if this device meets their require-
ments.
The INSTINCT control system also senses the
water temperatures entering and exiting the
heat exchanger to provide protection against
low water conditions. Where local codes and
jurisdiction do not accept a pressure device for
low water protection, the jurisdiction may ac-
cept this INSTINCT integral control function as
a means of providing low water protection.
NOTICE
Fig. 7 - Piping Component Legend
To Next Page
Loading...
Need help?
General
