Laars MagnaTherm HTD Series, Инструкция по установке и эксплуатации

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Page 13
HTD
Venting
Information
inches
cm
inches
cm
ft**
m
inches
cm
ft**
m
inches
cm
6 15 6 15 100 30.5 6 15 50 15.2 14 36
6 15 8* 20* 100 30.5 8* 20* 100 30.5 14 36
2000 8
20
8
20
100
30.5
8
20
100
30.5
14
36
8 20 8 20 100 30.5 8 20 50 15.2 18 46
8
20
10*
25*
100
30.5
10*
25*
100
30.5
18
46
3000 10
25
10
25
100
30.5
10
25
100
30.5
18
46
10 25 10 25 100 30.5 10 25 50 15.2 22 56
10
25
12*
30*
100
30.5
12*
30*
100
30.5
22
56
4000 12
30
12
30
100
30.5
12
30
100
30.5
22
56
*A vent increaser at the boiler outlet is required
**Equivalent Feet: Equivalent Feet: To calculate maximum equivalent length, measure the linear feet of the pipe
and add 5 feet (1.5m) for each elbow used.
***Category II: Category II pipe size may vary. Draft must remain between -0.01 and -0.001" w.c..
Notes:
1. Installations in the U.S. require exhaust vent pipe that is CPVC complying with ANSI/ASTM D1785 F441,
stainless steel complying with UL1735, or polypropylene complying with ULC S636.
2. Installations in Canada require exhaust vent pipe that is certified to ULC S636.
3. Intake (air) pipe must be PVC or CPVC that complies with ANSI/ASTM D1785 F441, ABS that complies with
ANSI/ASTM D1527, stainless steel, or galvanized material.
1600
2500
3500
Vent / Air
Connector Size
Model
Maximum
Ducted Air Pipe
Length
Air Pipe Size
Typical
Category II Vent
Pipe Size***
Maximum
Category IV
Vent Pipe
Length
Category IV
Vent Pipe Size
Table 9. Vent/Air Pipe Diameters
2.C.1 Category lV Vent Sizes
Positive pressure vent systems may be either
horizontally or vertically vented. The vent pipe
used must be suitable for positive pressure, per the
requirements shown in Section 2.B. Table 9 shows
the pipe size and allowable maximum equivalent feet
of piping allowed for both air and vent in a Category lV
system.
The forced draft combustion air blower in the unit has
sufficient power to vent properly when the guidelines in
Table 9 are followed.
WARNING
The venting must be installed with appropriate
condensate traps and using only specific
manufacturers, models and materials outlined in this
manual. Draft must always remain between -0.1” and
-0.001” at all firing rates. If pressures outside of this
range are measured, consult professional venting
engineer for recommendations, such as double-acting
barometric dampers to avoid reduced performance or
hazardous conditions.
2.C.2 Category II Vent Sizes
Non-positive pressure vent systems are generally
vertically-terminated. Table 9 gives guidelines for vent
and air pipe sizes, but the draft must be measured to
ensure that it remains between -0.1”w.c. and -0.001”w.c.
at all firing rates.
2.C.3 Common Venting
This unit can be common vented, however, the common
venting must be a professionally designed and approved
system. See Document 1396.pdf Application Guide
for Common Venting (commercial condensing ,
available online. See Back Cover)
Category II and IV units are never permitted to share
a vent with any Category 1 units.