ATH KN Series, Инструкция по установке и эксплуатации

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Cast Iron Condensing Boilers – Installation Manual
Cast Iron Condensing Boilers – Installation Manual
DIRECT VENT
POSITIVE PRESSURE, CATEGORY IV
In this configuration the boiler blower is used to push
the flue products to the outdoors while drawing
combustion air from the outdoors. The Direct Intake Air
Option instructions under the COMBUSTION AIR &
VENTILATION section must be followed!
Horizontal Direct Vent Systems - Figures 2 & 3
The vent materials used in positive pressure vent
systems must be certified to UL 1738 for installations in
the United States, ULC S636 for installations in Canada.
To maximize the performance of single wall sheet metal
vent systems locate 90° elbows as far from the boiler as
possible and from one another. For best results,
horizontal vent systems should be as short and straight
as possible.
The vent system must be both gas and water tight.
All seams and joints in metal pipes must be joined and
sealed in accordance with the vent system manufacturer’s
instructions.
When horizontal vent runs exceed 5 ft , 1.5m they must
be supported at 3 ft , 0.98 m intervals with overhead
hangers. If any part of a single wall metal vent system
passes through an unheated space it must be insulated
with insulation rated for 400°F , 212°C.
Horizontal vent systems shall terminate at least 4 ft ,
1.3 m below, 4 ft , 1.3 m horizontally from or 1 ft ,
0.23 m above any door, window or gravity air inlet into
any building. It must not terminate less than 4 ft , 1.3 m
horizontally from, and in no case above or below, unless
a 4 ft , 1.3 m horizontal distance is maintained, from
electric meters, gas meters, regulators and relief
equipment and not less than 7 ft , 2.3 m above adjacent
public walkway. The bottom of the vent terminal(s) shall
be located at least 5 ft , 1.5 m above the air intake
terminal(s) unless there is a 5 ft , 1.5 m distance between
them.
Use (Table 4) for the maximum Category
(IV) equivalent vent length and the equivalent
length per fitting. Table 4 - “Category IV
Equivalent Length per Fitting” chart is meant
as a guideline for preliminary sizing. If vent
length approaches 75% of maximum length
listed, an engineered vent system calculation
must be performed. Consult factory.
Abnormal wind patterns may effect overall
performance.
Table 4 - Category IV Maximum Equivalent Vent
Length & Equivalent Length per Fitting
Model/Outlet Diameter
K*
6+ 10+ 16+
5" 5" 6"
Maximum Equivalent
Length (Catagory IV)
100' 100' 100'
Standard Tee 1.25 25 ft 25 ft 30 ft
Boot Tee 0.65 15 ft 15 ft 15 ft
Cap - Low Res (UL) 0.50 10 ft 10 ft 15 ft
45° w/Bird Screen 0.40 10 ft 10 ft 10 ft
Elbow - 90° 0.38 10 ft 10 ft 10 ft
Elbow - 45° 0.15 5 ft 5 ft 5 ft
Model/Outlet Diameter
K*
20+ 26+ 30+ 40+
6" 8" 8" 10"
Maximum Equivalent
Length (Catagory IV)
100' 100' 100' 100'
Standard Tee 1.25 30 ft 35 ft 35 ft 40 ft
Boot Tee 0.65 15 ft 15 ft 15 ft 20 ft
Cap - Low Res (UL) 0.50 15 ft 15 ft 15 ft 15 ft
45° w/Bird Screen 0.40 10 ft 10 ft 10 ft 15 ft
Elbow - 90° 0.38 10 ft 10 ft 10 ft 15 ft
Elbow - 45° 0.15 5 ft 5 ft 5 ft 7 ft
*Equivalent lengths based on K factors and (5X)
pipe diameters straight length between fittings.