Fulton Caliber (CAL) Condensing Hydronic Boiler - Manual (Page 18)

© The Fulton Companies 2014
INSTALLATION
CAL-IOM-2014-0129
SECTION 2
2-12
 Use air elimination devices in system piping
 Eliminate System Air
There is a factory-installed air eliminator (air vent). The air eliminator must
not be altered or removed. Additional air elimination recommendations are as
follows:
1. If a sealed diaphragm-type expansion tank is used, install an air eliminator
in the hot water piping at the air separator.
2. If an air cushion type expansion tank is used, pipe tank directly into boiler
supply.
3. On multi-zoned systems (or a system with both space and domestic water
heating), air elimination must be provided either in the common piping or
on every loop.
4. When the boiler is installed at a higher level than baseboard radiation (if
used), air elimination must be provided directly above the unit.
Fill the Boiler With Water
Adhere to the following:
1. Close combination shutoff /purge valve in supply, all drain cocks, the
shutoff valve for the pressure reducing (fi ll) valve, and all manual air vents.
2. Close the isolation valves to the boiler.
3. Open all other system shutoff valves and one of the zone valves, the vent
on the combination shutoff /purge valve and the shutoff valve to the
pressure-reducing (fi ll) valve.
4. Water will now begin to fi ll the system. Air will escape through the vent
on the combination shutoff / purge valve. Continue fi lling until a constant
stream of water (no bubbling) is discharged from the vent.
5. Close the zone valve on the purged loop, and open the zone valve on
the next loop to be purged. When all air has escaped and only water is
discharged, close the zone valve. When all zones have been purged (one at
a time), close the vent on the combination shutoff /purge valve.
6. At this point, the system has been initially fi lled. However, air pockets
may still remain at high points in the system and in heating loops above
the level of the combination shut/off purge valve. It is quite possible,
depending on the particular system, that all piping above the combination
shutoff /purge valve still contains air. If manual vents are installed on the
system high points, these should be opened to vent these locations. When
only water is discharged from all vents, the initial purging is complete.
7. Open the combination shutoff / purge valve (keep the vent closed). With
the gas shutoff valve closed, turn on power to the boiler and operate the
circulator. Circulate the system water for approximately 30 minutes to
move all air to the automatic air separation point.
!
WARNING
All information in this manual is for
reference and guidance purposes,
and does not substitute for required
professional training, conduct, and strict
adherence to applicable jurisdictional/
professional codes and regulations.
4
CAUTION
Some soap used for leak testing is corrosive
to certain types of metals. Clean all piping
thoroughly after completing the leak check.
Never leave an opened manual air vent
unattended. In the event an opened vent is
left unattended, water damage could occur.
The presence of chlorides and/or sulphur
in the combustion air or fuel will negatively
impact the heat exchanger and void the
warranty.
Circulating pump power supply must be
external to the boiler. The use of the SOLA
as a power supply is prohibited. The pump
contacts provided with the SOLA are for
controlling the pump only.