Fulton Caliber (CAL) Condensing Hydronic Boiler - Manual (Page 22)

© The Fulton Companies 2014
INSTALLATION
CAL-IOM-2014-0129
SECTION 2
2-16
 Combustion Air Piped From Outside Building Without Sealed
Combustion
Adhere to the following for installation:
1. If the boiler room is deemed to be a confi ned space, two permanent ducts
connected to the outdoors must be installed.
2. After assembly, wipe excess cement from pipe at end of fi tting socket.
A properly made joint will show a bead around its entire perimeter. Any
gaps may indicate a defective assembly due to insuffi
cient cement. Handle
joints carefully until completely set. Galvanized steel joints should be
sealed with adhesive aluminum tape.
NOTE:  Assembly should be completed within 20 seconds after last application of
cement. Do not use a hammer to insert pipe.
 Air Piped From Outside Boiler Room
Adhere to the following:
1. The combustion air supply can be piped directly to the air inlet (Figure 3) of
the boiler.
2. An optional rubber air intake coupling may be used with boilers specifi ed
for installation with ducted air supply to connect the intake piping to the
boiler air inlet.
3. The air intake must be piped out of the building if the boiler room contains
contaminated air. See Figures 7 and 8.
Exhaust Venting
The Caliber boiler is equipped with a round exhaust vent connection (Figure 7) at
the lower rear of the boiler.
 Standard Venting Confi guration, Category II or IV
The Caliber boiler is standardly confi gured as a Category II or IV appliance.
The vent connection sizes are adequate for a Category II or IV arrangement.
Venting material must be appropriate for positive pressure applications where
condensing occurs in the stack.
Adhere to the following:
1. The boiler requires a category IV stack. The Caliber is factory confi gured
with a stack temperature limiting function set to 200 degrees Fahrenheit,
which is appropriate for PVC and CPVC venting materials. If stainless
venting is used, the stack material must be either AL-29-4C or 316L
stainless steel and comply with UL-1708 or UL-103, and the stack
temperature limit function may be disabled. If PVC exhaust venting
!
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.
Do not use the boiler/burner as
support for ducted air piping.
Ducted piping must be supported
independently of the boiler.
Do not terminate venting into an
enclosed area.
For closet and alcove installations,
CPVC, polypropylene, or stainless
steel material must be used.
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.
Regular maintenance of the
fi lter is required (as per the fi lter
manufacturer’s recommendations) to
maintain the warranty.
Particulate matter or chemicals in
the combustion air supply to the
boiler will cause damage or failure to
the burner and is not covered under
warranty.
Do not mix vent systems of diff erent
types or manufacturers.