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SECTION 2
PHW-IOM-2013-0214
A positive system pressure at the highest point of 5 to
10 psi.
Make up water valve should be designed to add water
to the system at the outlet of the boiler and should
not be fed directly into the boiler.
2. Air removal equipment, including air separator and
automatic air breather valves.
3. A functioning expansion tank designed to system
speci cations.
4. Filtration to remove particulates installed inline with the
suction side of the recirculating pump.
5. Bypass chemical feeder for corrosion inhibitor
maintenance.
6. Optionally a water meter could be installed in series
with the automatic pressure activated water make up
valve to monitor any make up water.
7. Ensure water quality meets the following:
Questions? Call (315) 298-5121, or visit us online at www.fulton.com
HEATING
MAKEUP
SUPPLY
WATER
MANIFOLD
PRESSURE
REDUCING
STOP
VALVE
VALVE
CHECK
VALVE
AUTOMATIC
AIR VENT
HOT WATER
STOP VALVE
ADDITIONAL
TEMPERATURE
BOILER (S)
PRESSURE
GAUGE
FLAME ROD
SPARK PLUG
OPERATING AND
HIGH LIMIT AQUASTATS
(INTERNAL)
ASME
SAFETY
VALVE
ADDITONAL
BOILER (S)
FIGURE 6 TYPICAL PIPING MULTIPLE BOILER SYSTEM
Oxygen - less than 250 ppb (operating condition)
pH - must be in the range of 8-10
Total Iron & Copper - less than 25 ppm
Corrosion Inhibitor - level capable of maintaining
iron corrosion rates < 2 mpy. Due to changing
environmental restrictions, a non-heavy metal, all
organic inhibitor is recommended, which is designed
for multi-metal systems including ferrous metals and
yellow metals such as copper and brass.
Chlorides - less than 250 ppm as Cl. Limit applicable
only to installations utilizing duplex steel pressure
vessel components.
Install Water Piping
The bottom connection to the boiler is the INLET and must be
connected as the return from the system. The top connection
on the boiler is the OUTLET and must be connected as the
supply to the system.
EXPANSION
TANK
STOP
VALVE
DRAIN
CONDENSATE
DRAIN
INSTALLATION
HEATING
RETURN
MANIFOLD
Multiple Boiler Installation
TYPICAL PIPING SYSTEM
UNLESS OTHERWISE NOTED, ALL
COMPONENTS SHOWN ARE TYPICAL
ON EACH BOILER
2-9
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