Pavilion PV199DV Installation Manual page 23

[DIP Switch Adjustment]
Vent length condition
Less than 33 ft using 2 in. (50 mm) pipe
①
33 ft or more using 2 in. (50 mm) pipe
②
③ Less than 50 ft using 3 in. (75 mm) pipe
50 ft or more using 3 in. (75 mm) pipe
④
[Vent length Calculation example]
Step 1:
Vent Diameter
2 in.
Step 2:
Straight pipe length
(Vertical length + Horizontal length)
17 ft
Step 3:
Number of elbows
90° elbows: 2
45° elbows: 2
Step 4:
Calculate equivalent length
90° elbows: 2 × 5 ft = 10 ft
45° elbows: 2 × 3 ft = 6 ft
Step 5:
Total vent length
(Add Step 2 and Step 4 together)
17 ft + 16 ft = 33 ft
Step 6:
Check [DIP Switch Adjustment] and select DIP
switch settings.
②[ 33 ft or more using 2 in. (50 mm) pipe]
(i.e., turn ON DIP switch #7)
● ○
ON = / OFF =
DIP switches
#7 #8
○ ○
● ○
○ ●
● ●
Maximum Vent Length Configurations (For flexible
pipe for chimney)
[DuraVent® - Flex Through Chimney w/ Air Intake
(Only 3 in.)]
The vent length condition setting depends on
the flexible pipe length, the rigid pipe length and
number of elbows. Calculate an each ventilation
system equivalent length, then adjust the DIP
switch.
Maximum equivalent
Vent
DIP vent length*
length switch
#7
condition
H (Horizontal)
Short
○
< 50 ft (15 m)
length
Long
●
50 ft (15 m)–75 ft (22.5 m)
length
* The maximum vent length includes elbows.
• Equivalent vent length calculation example:
[Example 1]
- Vent Size: 3 in.
- V (Vertical length): 20 ft
- H (Horizontal length): 6 ft
- 90° elbow: 2
1 ft × 20 + 1 ft × 6 + 5 ft × 2 = 36 ft
Total equivalent length ≤ 50 ft
Select "Short length"
[Example 2]
- Vent Size: 3 in.
- V (Vertical length): 35 ft
- H (Horizontal length): 10 ft
- 90° elbow: 3
1 ft × 35 + 1 ft × 10 + 5 ft × 3 = 60 ft
50 ft < Total equivalent length ≤ 75 ft
Select "Long length"
●
ON = / OFF =
Equivalent
V (Vertical)
length
+
Flexible pipe:
1 ft (0.3 m)
Rigid pipe:
1 ft (0.3 m)
90° elbow:
5 ft (1.5 m)
45° elbow:
3 ft (0.9 m)
Venting the Combi Boiler
○
23