Manual 2100-483E
Page
46 of 59
35. LOW-NOX BURNER ASSEMBLY “N”
SUFFIX MODELS ONLY – U.S.
INSTALLATIONS ONLY
NATURAL GAS MODELS ONLY
Model numbers designated with an “N” are designed
for low NOx emissions which comply with all
California Air Quality Management District regulations
for nitrogen oxide emission levels. Refer to Figure 23
for NOx insert information.
* *
IMPORTANT
* *
For propane (LP) conversions the NOx
reduction screen inserts shown below must
be removed. This is accomplished by
removing the burner box assembly and
removing the NOx screens. Reassemble unit
properly before firing. Failure to remove the
NOx screens can result in improper operation
and malfunction of the burner system.
FIGURE 23
LOW NOX INSERT
R-410A
34. REFRIGERANT CHARGE
The correct system R-410A charge is shown on the unit
rating plate. Optimum unit performance will occur with
a refrigerant charge resulting in a liquid line temperature
(the cooling expansion device) as shown in Table 13 or
by pressures as shown in Table 12 (Page 42).
The liquid line temperatures in Table 13 are based upon
80ºF dry bulb / 67ºF wet bulb (50 percent R.H.)
temperature and rated airflow across the evaporator
during cooling cycle running in Stage 2 cooling.
TABLE 13
LIQUID LINE TEMPERATURE
s
l
e
d
o
M
d
e
t
a
R
w
o
l
f
r
i
A
F
°
5
9
.
p
m
e
T
D
O
F
°
2
8
.
p
m
e
T
D
O
1
S
3
G
W
0
0
1
,
1
7
9
-
5
9
5
8
-
3
8
1
S
4
G
W
0
0
5
,
1
7
9
-
5
9
4
8
-
2
8
1
S
5
G
W
0
0
7
,
1
9
9
-
7
9
7
8
-
5
8
Summary of Contents for WG3S1-A
Page 11: ...Manual 2100 483E Page 11 of 59 FIGURE 2A MOUNTING INSTRUCTIONS FOR WG3S1 ...
Page 12: ...Manual 2100 483E Page 12 of 59 FIGURE 2B MOUNTING INSTRUCTIONS FOR WG4S1 AND WG5S1 ...
Page 15: ...Manual 2100 483E Page 15 of 59 FIGURE 6 COMMON WALL MOUNTING INSTALLATIONS ...
Page 25: ...Manual 2100 483E Page 25 of 59 FIGURE 11 GAS PIPE CONNECTION ...