Buderus Logamax Plus GB142-24 Installation Instructions Manual page 22

6 Installation
All vent pipes must be glued, except for the flue gas adapter
(fig. 16, pos. 1) which is screwed into place and the first
connection to the flue gas adapter (fig. 16, pos. 2). Installed
you can slide the pipe onto the adapter, properly supported
and the exhaust pipe must be pitched a minimum of a ¼inch
per foot back to the boiler. This allows the condensate to
drain away. Fix the screws (fig. 16, pos. 3), this is obliged for
Canada.
All combustion air and vent pipe materials and fittings must
comply with the following:
Item Material
PVC
schedule 40
PVC-DWV
Vent or air
pipe and
CPVC
fitting
schedule 40
ABS-DWV
schedule 40
PVC
Pipe cement/
CPVC
primer
ABS
* Components of the certified vent systems must not be interchanged
with other vent systems or unlisted pipe fittings Plastic components,
and specified primers and glues of the certified vent system must be
from a single system manufacturer and not intermixed with other sys-
tem manufacturer's vent system parts.
NOTICE
Do not use cellular core pipe.
NOTICE
Ensure that a condensate drain is always
installed at the exhaust connection.
NOTICE
A minimum clearance of 4 feet horizontally from
and in no case above and below, unless a 4-foot
horizontal distance is maintained, from electric
gauges, gas gauges, regulators and relief
equipment
NOTICE
Use materials approved by the authority having
jurisdiction. In the absence of such authority,
PVC and CPVC pipe must comply with ASTM
D1785, F441 or D2665. Cement and primer
must comply with ASTM D2564 or F493.
For Canada, use CSA or ULC certified PVC or
CPVC pipe, fittings and cement.
22 Logamax plus GB142-24/30/45/60 - We reserve the right to make any changes due to technical modifications!
United states Canada
ANSI/ASTM D1785
ANSI/ASTM D2665
CSA or BH
ANSI/ASTM F441
Gas venting
systems,
ANSI/ASTM D2661 ULC S636 *
certified only
ANSI/ASTM D2564
ANSI/ASTM F493
ANSI/ASTM D2235
2
Fig. 16 Vent pipes
12" (300 mm)
minimum
EXHAUST
INTAKE
12" (300 mm)
minimum
24" MIN (610 mm)
minimum
Fig. 17 Vent and air pipe position (1) of a sealed combustion
system
3
1
12" (300 mm)
minimum
12" (300 mm)
minimum
12" (300 mm)
minimum