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Nordyne *TC Installation Instructions Manual page 39

Two-stage condensing gas furnaces with fixed & variable speed blowers
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NATURAL GAS with HiGH HEATING VALUE
iNPUT (BTU) & STAGE
ALTITUDE ABOVE
SEA LEVE L
60,000
80,000
100,000
1st
I 2rid
1st I 2rid
• ls d
2rid
i
45
I 45
45
01ol;999
i.7
! 3i5
i.7
! 3:5
i.7
! 35
45
45
45
2,000 to 2,999 FT
1.7 !3.3
1.7 !3.3
1.7 13.3
i
45
i
45
I
45
3,000 to 3,999 FT
i.7
!3:i
1.7I
3:i
1.7 !3:i
45
45
45
4,000 to 4,999 FT
1.7 12.9
1.7 !2.9
1.7 !2.9
45
45
45
5,000
,o 5,909
FT 1.7 !2:8 i.712:8 1.7 !2:8
48
48
48
6,000 to 6,999 FT
1.7 !3.5
1.7 !3.5
1.7 !3.5
120,000
1st
I 2nd
45
1!7 I 35
45
1.7 ! 3.3
45
1_7 I 31
45
1.7 I 2.9
45
t !7 I 2.8
48
1.7 ! 3.5
48
-
48
7,000 to 7;999FT
i.7
! 3:3
1.7 ! 3:3
48
48
8,000 to 8,999 FT
1.713.01.7 !3.0
'
48
I
48
&000 to 9,999 FT _
48
"
48
1.7 I 33
i.7
I 3:3
48
48
1.7 I 3.0
1.7 ! 3.0
48
48
ORIFICE SIZE
MANIFOLD PRESSURE
ORIFICE SIZE
MANIFOLD
PRESSURE
ORIFICE SIZE
MANIFOLD PRESSURE
ORIFICE SIZE
MANIFOLD
PRESSURE
ORIFICE SIZE
MANIFOLD PRESSURE
ORIFICE SIZE
MANIFOLD
PRESSURE
ORIFICE SIZE
MANIFOLD PRESSURE
ORIFICE SIZE
MANIFOLD
PRESSURE
ORIFICE SIZE
MANIFOLD PRESSURE
Table 15. High Altitude Deration Chart for Natural Gas = High Heating Value
=
-"=
NATURAL GAS with LOW HEATING VALUE
ALTITUDE ABOVE
SEA LEVEL
0 to 1,999 FT
2,000 to 2,999 FT
3;000
to 3,999 FT
4,000 to 4,999 FT
iNPUT (BTU) & STAGE
60,000
80,000
100,000
120,000
,,,12od,s,12od,s, 1 2°_ ,_,12o_
45
85
"
4,5
45
i.7 !
35"
1.7 !
3i5
i.7 I 3:5
i.7
!3:5
45
45
1.713.5 1.713.5
45
45
i.7
!
34
i.7 I 3i4
45
45
17132 17132
45
45
1.7 13.5
1.7 13.5
45
i
45
1.7 !
3A
1.7
! 3:4
45
45
1.7 13.2 1.7 13.2
=
4,5
I
45
'
45
I
45
5,000
to 5,999
FT
6,000 to 6,999 FT
7;000 to 7;999 FT
8,000 to 8,999 FT
i.7 !
3:i
45
1.7 I 2.9
48
i.7 !
3:5
48
1.7 ! 3.3
1.7 !
3:i
i.7
I 3:1
i.7
! 3.1
45
45
45
1.712.9 1.712.9 1.712.9
48
'
48
1
48
1.7 135'1.7
13:5 i.7 13:5
48
48
48
1.7 13.3 1.7 13.3 1.7 13.3
48
"
4,8
9,000 to 9,999 FT
i.71 _ 3.i
1.7 I 3.i
ORIFICE SIZE
MANIFOLD PRESSURE
ORIFICE SIZE
MANIFOLD
PRESSURE
ORIFICE SIZE
MANIFOLD PRESSURE
ORIFICE SIZE
MANIFOLD
PRESSURE
ORIFICE SIZE
MANIFOLD PRESSURE
ORIFICE SIZE
MANIFOLD
PRESSURE
ORIFICE SIZE
MANIFOLD PRESSURE
ORIFICE SIZE
MANIFOLD
PRESSURE
48
I
48
ORIFICE SIZE
1.7 I 3.i
i.7
_ 3.1
MANIFOLD PRESSURE
Table 16. High Altitude Deration Chart for Natural Gas =Low heating Value
39

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