Navien NPE-32AWE, Руководство по установке

Страница: 50 / 68

50 Appendixes
8. R eplace the gas inlet pipe to its original position and use all
screws to secure all connections.
Note
Do not overtighten as this may damage or
crack the components.
9. S et the Front Panel Dip switch according to the following
figure and table.
WARNING
Be sure to turn off the power before changing the DIP
switch setting.
1 2 3 1 2 4 5 6 7 8 9 10
ON ON ON
Figure 6. Front Panel Dip S witch S ettings
Dip Switch 1 (set of 10)
Sw itch F unction S etting
9 - 10
Gas
Category
G20(LNG) / G30(LPG) 9-OFF 10-OFF
G25(LNG) / G31(LPG) 9-ON 10-OFF
G2 7 (LNG) 9-OFF 10-ON
Dip Switch 2 (set of 2)
Sw itch F unction S etting
2 Gas Type
LNG OFF
LPG ON
Table 2. Front panel dip switch settings
DANGER
When conversion is required, be sure to set the Front
Panel DIP switches according to the supply gas type.
Failure to properly set the DIP switches could cause
carbon monoxide poisoning, resulting in severe personal
injury.
10. Turn on the gas and water supply to the water heater.
11. Measure and adjust the gas/air ratio using a combustion
analyser (recommended). Perform the following tasks:
a. R otate and remove the cap to access the emissions
monitoring port as shown in Figure 7 .
b. Insert the analyser into the port (Figure 7 ).
Figure 7 . Measuring and Adjusting the Gas/Air R atio
Model G as
Max Min
% C O
2
% C O
2
NPE-24
AWE/ S WE
G20 9.18 9.18
G25 9.18 9.49
G25.1 10.63 10.53
G2 7 9.13 9.14
G30 11.56 10.95
G31 10.65 10.18
NPE-32
AWE/ S WE
G20 9.31 9.2 7
G25 9.40 9.30
G25.1 10.45 10.35
G2 7 9.00 8. 7 5
G30 11.30 11.10
G31 10.48 10.18
Table 3. CO
2
value
( C O
2
Value must be w ithin 0 .5 % of the v alues listed. )