13
0
3
6
9
12
15
18
21
24
27
30
32
35
38
41
44
47
50
53
56
59
0.00
0.90
1.80
2.70
3.60
4.50
5.40
6.30
7.20
8.10
9.00
9.90
10.80
11.70
12.60
13.50
14.40
15.30
16.20
17.10
18.00
m
1
0
2
3
4
5
6
ft
Vent length
Elbows
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Number of
pieces**
1
1
1
2
3
3
3
1
1
1
3
3
3
1
1
3
3
1
1
1
3
3
3
1
1
3
3
1
1
3
3
1
1
1
3
3
3
1
1
3
3
1
1
3
3
1
1
3
3
1
1
1
3
3
3
1
1
3
3
1
1
3
3
1
1
3
3
1
1
3
3
4
4
4
4
4
4
4
4
4
2
2
2
2
2
2
2
2
2
4
4
4
4
4
4
4
4
4
2
2
2
2
2
2
2
2
4
4
2
2
2
4
4
4
4
4
4
4
4
4
2
2
2
2
2
2
2
2
4
2
2
4
4
4
4
4
4
4
4
4
2
2
2
2
2
2
2
2
4
2
2
4
4
4
4
4
4
4
4
4
2
2
2
2
2
2
2
2
4
2
2
4
4
4
4
4
4
4
4
4
2
2
2
2
2
2
2
2
4
2
2
4
4
4
4
4
4
4
4
4
2
2
2
2
2
2
2
2
4
2
1
3
2
4
Short length using 4" (100mm) pipe
Short length using 3" (75mm) pipe
Long length using 3" (75mm) pipe
Long length using 4" (100mm) pipe
Short length using 4" (100mm) pipe
Short length using 3" (75mm) pipe
Long length using 3" (75mm) pipe
Long length using 4" (100mm) pipe
**Table assumes straight vent pieces are 3’ (0.9m) each.
Shorter or longer vent pieces may also be used up to the maximum allowed
vent length.
* Do not change any other dipswitches.
* Vent length condition.
1
7
8
ON=
OFF=
2
3
4
The power must be unplugged when
adjusting the dip switches to switch the
airflow amount.
5IFVOJUDBOCFBEKVTUFEUPBDDPNNPEBUFMPOHFSWFOUSVOTSFGFSUPUIFCFMPXUBCMFUPàOEUIF
maximum vent length based on the number of elbows. Adjust the dip switches according to the vent
condition noted in the tables below.
Note: By default, the unit has been set to the "short length" condition. When adjusting the dip
TXJUDIFTGPSMPOHFSWFOUSVOTUIF#56)JOQVUPGUIFBQQMJBODFXJMMCFSFEVDFECZVQUP
Maximum Vent Length Adjustment Dipswitches
5XPFMCPXTNBYJNVNMFOHUIGU N
(with dip switches set at "short length" condition)
5XPFMCPXTNBYJNVNMFOHUIGU N
(with dip switches set at "long length" condition)
<.BYJNVN7FOU-FOHUI&YBNQMF>
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UIJTTUFQXJMMSFTVMUJOBDPEFEJTQMBZFEPOUIFSFNPUFDPOUSPMMFSBOEBDFBTFJOPQFSBUJPO
.
If this occurs, disconnect, then reconnect power to the water heater to reset the system.
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