Noritz ecoTOUGH NRC661-DV-NG, Руководство по установке, Страница: 12 / 36

12
Short length
Long length
**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 DIP switch.
* Vent length condition.
7
ON= OFF=
1
2
0
3
6
9
12
15
18
21
24
27
30
33
36
39
42
45
48
51
54
57
60
63
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
18.90
m 1 0 2 3 4 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
21
Number of
pieces**
1
1 0%
-3%
-3%
-5%
1
1
1
1
1
1
1
1
1
2
2
2
2
2
2
2
2
2
2
2
1
1 0%
-3%
-3%
-5%
1
1
1
1
1
1
1
2
2
2
2
2
2
2
2
2
2
2
1
1 0%
-3%
-3%
-5%
1
1
1
1
1
2
2
2
2
2
2
2
2
2
2
2
1
1 0%
-3%
-3%
-5%
1
1
1
2
2
2
2
2
2
2
2
2
2
2
1
1 0%
-3%
-3%
-5%
1
2
2
2
2
2
2
2
2
2
2
2
4” Pipe
1
2
The power must be unplugged when
adjusting the DIP switch to switch the
airflow amount.
The unit can be adjusted to accommodate longer vent runs; refer to the below table to find the
maximum vent length based on the number of elbows. Adjust the DIP switch 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 switch
for longer vent runs, the BTUH input of the appliance will be reduced by up to 5%.
Maximum Vent Length Adjustment DIP switch
- Two 90° elbows, maximum length = 18 ft. (5.4m)
(with DIP switch set at "short length" condition)
- Two 90° elbows, maximum length = 51 ft. (15.3m)
(with DIP switch set at "long length" condition)
[Maximum Vent Length Example]
• Disconnect power to the water heater before changing the DIP switch. Failure to perform
this
step will result in a "733" code displayed on the Display Window and a cease in operation
.
If this occurs, disconnect, then reconnect power to the water heater to reset the system.
<Maximum Vent Length Configurations>