Specifications

© The Fulton Companies 2012
INSTALLATION VTG-IOM-2012-1001 SECTION 2
2-6
» Be supported by means other than the safety
valve itself.
» Be piped to avoid danger of scalding
personnel.
NOTE: ´ Each boiler is equipped with a pressure-temperature
gauge to be installed in the outlet piping section of the boiler.
TABLE 2  SAFETY RELIEF VALVE INLET AND OUTLET SIZES
Model Trim
Pressure
(PSI)
Inlet Size; inch
(mm)
Outlet Size;
inch (mm)
VTG-2000,
2500
(DF, LE)
30 1 1/4 (31.75) 1 1/2 (38.1)
60 1 (25.4) 1 1/4 (31.75)
100 3/4 (19.05) 1 (25.4)
125 3/4 (19.05) 1 (25.4)
160 3/4 (19.05) 1 (25.4)
VTG-3000,
3500
(DF, LE)
30 1 1/2 (38.1) 2 (50.8)
60 1 1/4 (31.75) 1 1/2 (38.1)
100 1 (25.4) 1 1/4 (31.75)
125 1 (25.4) 1 1/4 (31.75)
160 3/4 (19.05) 1 (25.4)
VTG-4000,
5000
(DF, LE)
30 2 (50.8) 2 1/2 (63.5)
60 1 1/2 (38.1) 2 (50.8)
100 1 1/4 (31.75) 1 1/2 (38.1)
125 1 (25.4) 1 1/4 (31.75)
160 1 (25.4) 1 1/4 (31.75)
VTG-6000
(DF)
30 2 (50.8) 2 1/2 (63.5)
60 1 1/2 (38.1) 2 (50.8)
100 1 1/4 (31.75) 1 1/2 (38.1)
125 1 1/4 (31.75) 1 1/2 (38.1)
160 1 (25.4) 1 1/4 (31.75)
Install Water Piping
All water supplies contain some solids, dissolved gases or
dissolved minerals. These may cause corrosion, deposition
and/or fouling of equipment. To prevent these contaminants
from impacting boiler performance, valve operation and
general pipe longevity, each location must be analyzed and
treated accordingly.
Adhere to the following for water piping installation (See
Figure 3):
1. Isolation valves are recommended on both water
connections for ease of service.
2. Install piping so that the boiler is not supporting any
additional piping.
3. Install manual purging valves in all loops and zones.
Install a pressure-reducing (automatic  ll) valve in the
cold water  ll line to the boiler system. Check that the
proposed operation of zone valves, zone circulator(s)
and diverting valves will not isolate air separator(s) and/
or expansion tank(s) from the boiler. Clearance from hot
water pipes to combustibles must be at least 6 inches
(152 mm).
4. When used in conjunction with a refrigeration system,
install the boiler so that the chilled medium is piped
in parallel with the boiler with appropriate valves to
prevent the chilled medium from entering the boiler.
If the boilers are connected to heating coils (located
in air handling units where they may be exposed to
refrigerated air circulation) such boiler piping systems
must be equipped with  ow control valves or other
automatic means to prevent gravity circulation of the
boiler water during the cooling cycle.
5. Include the following in the mechanical equipment in
the hydronic heating system:
» An automatic pressure activated water make up
valve with back  ow preventer. It must be set to
maintain required Net Positive Suction Head
(NPSH) for re-circulating pumps, a positive
system pressure at the highest point of at least
5-10 PSIG, and 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.
» Air removal equipment, including an air
separator and automatic breather valves, along
with a functioning expansion tank . Each must
be designed to system speci cations.
NOTE: ´ The water connection on the top of the boiler is the
outlet connection. The water connection on the rear of the
boiler is the inlet connection.
NOTE: ´ The Fulton Vantage boiler does not require a primary/
secondary  ow piping system. Although primary/secondary
is an acceptable con guration, the boiler does not have a
minimum return water temperature requirement (when  ring
on natural gas or propane) and the heat exchanger will not
be harmed by low  ow or zero  ow conditions. See Figure 3
for a sample piping layout.