Ascent Combi and Ascent Plus Combi Gas – January 2024 8
TIP:
RECEIVING and UNPACKING
Inspect shipment upon receipt for external damage. Walk
around the freight and identify and address any unusual signs of
handling with the shipper before signing for the delivery. This is
a fast and easy way to resolve all transportation damage claims.
When unpacking and uncrating, inspect each item for internal
damage. Any damage found should immediately be reported to the freight
carrier before installation. The receiver is responsible for following the claims
procedure of the freight carrier. The freight carrier is responsible for taking
prompt action on all claims. Replacements for parts damaged in shipment are
available upon receipt of a signed copy of a claim report (concealed damage
claims should be filed immediately against the freight carrier by the consignee).
After unpacking, check each item against the packing list. Inspect it
thoroughly for loose parts, instruction sheets and packing lists. Immediately
report any missing items. It is wise to complete the installation before discarding
packing material. Store all parts where they will not be damaged or lost prior to
installation.
LOCATION and CLEARANCE
DANGER: Provide clearance to combustible surfaces in accordance with all local and national codes. Follow National
Fire Protection Association Bulletin NFPA No. 54: National Fuel Gas Code and all applicable codes.
Installation Clearances from Boiler Surfaces, Inches Clearance to
Combustibles
RECOMMENDED
Clearance for Service
Front of boiler (not including burner)* 10” 20”
Left side of boiler body 0 5”
Right side of boiler body 0 12”
Back of boiler body 4” 4”
Top of boiler body 10” 16”
Bottom of boiler legs to floor 0 0
Ascent Combi B-Vent/L-Vent: from flue pipe
“A”
1” / 3”
1” / 3”
Ascent Combi Standard Flue: from flue pipe
“B”
9”
9”
Ascent Plus Combi Polypropylene
“C”
0”
0”
* Minimum recommended clearance to allow door to fully open.
Ascent Combi
Ascent Plus
Combi
Weight 377 lbs 405 lbs
Water Content 3 gallons 3 gallons
Air Inlet Pipe Size 2" PVC 3" PVC
Boiler Flue Outlet 5" Flue Pipe
3"
Polypropylene
A = L-Vent/ B-Vent
B = Standard Vent
C = Polypropylene Vent
(Ascent Plus Combi only)
Ascent Combi
Ascent Plus Combi
Figure 1A, Top View of Boiler
Flue Connection Clearance to Combustibles
7/8”
B
7
A
C
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