Variable Primary Piping Arrangement - FULTON Endura+ Series Installation And Operation Manual

SECTION 2
EDRP-IOM-2019-0212
NOTEE: The upper water connection on the back of the boiler is the outlet
–
connection. The lower water connection on the rear of the boiler is the inlet
connection.
ƒ Install filtration in the common loop or per boiler to remove particulates. A
#4 or finer mesh size is required.
ƒ Install bypass chemical feeder for corrosion inhibitor maintenance if
required to comply with water chemistry requirements.
ƒ Install corrosion coupon holder to assess corrosion inhibitor performance if
required to comply with water chemistry requirements.
ƒ Before installing an Endura+ boiler into a hydronic loop, be sure that the
system piping and any other components of the system are clean and free
of debris, ferrous oxide (magnetite), and any foreign matter. The hydronic
system must be completely flushed prior to installing the boiler.
FIGURE 3 - TYPICAL WATER SIDE PRESSURE DROP
6.0
5.0
4.0
3.0
2.0
1.0
0.0
0 100
ƒ Variable Primary Piping Arrangement
Endura+ boilers are designed for installation in variable primary flow piping
arrangements (see Figures 4 and 5), sometimes referred to as full flow systems.
This arrangement eliminates temperature mixing associated with primary-
secondary piping, thereby delivering the lowest temperature water directly
to the boiler return connections and increasing thermal efficiency of the
condensing boiler plant.
– NOTEE: Although it is acceptable to install Endura+ boilers in a primary-
secondary configuration, it is not required.
Adhere to the following for variable primary piping arrangements:
ƒ Select pump(s) with sufficient total dynamic head for the pressure drop of the
loop at design flowE: See Figure 3 for the water side pressure drop through
the boiler. The Endura+ boiler will automatically perform a safe shutdown
Questions? Please Contact Your Local Manufacturer's Representative
EDR+2500
EDR+3000
200 300 400
Water Flow Rate (GPM)
EDR+4000
EDR+5000
EDR+6000
500 600
INSTALLATION
!
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.
Ensure all labels on the boiler are
legible. All connections and safety
devices, both mechanical and
electrical, must be kept clean, with
ease of access for inspection, use and
maintenance.
Do not store or use gasoline or other
flammable vapors and liquids or
corrosive materials in the vicinity of
this or any other appliances.
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