Fulton Endura (EDR) Condensing Hydronic Boiler - Manual (Page 24)

© The Fulton Companies 2014
2-18
INSTALLATION
EDR-IOM-2014-0318
SECTION 2
Venting Material* Max. Flue Temperature
PVC 200 F (93 C)
CPVC 200 F (93 C)
Polypropylene (InnoFlue) 248 F (120 C)
*PVC, CPVC and polypropylene are approved for EDR-1000 only.
5. The condensate connection on the boiler should be piped into the stack
drain piping. The pipe from the boiler directed to the drain should be
installed at a slope of ¼” per foot (6.35 mm per .3 m).
6. Ensure that the condensate drain piping will not be exposed to
temperatures where water/condensate will freeze in the lines.
 Common Venting Layouts for Endura
It is possible to combine the air intake and/or exhaust piping for a number of
Endura boilers. The pressure drop across the common system (combined total
for air intake and exhaust) cannot exceed the pressure drop requirements for an
individual boiler. See Table 4.
Adhere to the following for installation:
1. Consult your venting supplier for guidance in designing common vented
installations. It is imperative to design such systems to prevent backfl ow of
exhaust gases through idle boilers.
2. Endura boilers cannot be common vented with other equipment.
When designing a draft system for a quantity of two or more Endura boilers, the
following items must be considered and addressed by the parties responsible for
designing and providing that system:
 MULTIPLE BOILERS SHARING AN EXHAUST STACK, NEGATIVE PRESSURE IN THE
COMMON HEADER:
1. Precautions must be taken to ensure that the negative pressure in the
common header stays within the stated ranges (refer to table 4) at all
possible conditions. This includes considering all possible operating
conditions of the stack, including:
 All boilers on at their maximum input rating capacity
 One boiler in the system on at a low fi re position
 No boilers on, light off condition
2. Draft accessories, such as stainless steel dampers, may be required
depending on the variety of conditions experienced in the draft system.
 MULTIPLE BOILERS SHARING AN EXHAUST STACK, POSITIVE PRESSURE IN THE
COMMON HEADER:
1. Precautions must be taken to ensure the prevention of fl ue gases from
!
WARNING
Do not terminate venting into an
enclosed area.
Never use open fl ame or smoke from
a cigarette, cigar, or pipe as a testing
method during boiler installation,
operation, or maintenance.
Foreign substances, such as
combustible volatiles in the
combustion system can create
hazardous conditions. If foreign
substances can enter the air stream,
the boiler combustion air inlet must
be piped to an outside location.