Maximum Equivalent Pipe Length; High Altitude Pressure Switches - York MM9E Series Installation Manual

5715184-BIM-A-0519
Table 6: Maximum Equivalent Pipe Length
Elevation Sea Level–2000
Model Input (BTUH) Pipe Size (in.)
60,000
60,000
60,000
80,000
80,000
80,000
100,000
100,000
100,000
Elevation 2001–4000
Model Input (BTUH) Pipe Size (in.)
60,000
60,000
60,000
80,000
80,000
80,000
100,000
100,000
100,000
Elevation 4001–5000
Model Input (BTUH) Pipe Size (in.)
60,000
60,000
60,000
80,000
80,000
80,000
100,000
100,000
100,000
Elevation 5001–6000
Model Input (BTUH) Pipe Size (in.)
60,000
60,000
60,000
80,000
80,000
80,000
100,000
100,000
100,000
Table 7: High Altitude Pressure Switches
HIGH ALTITUDE PRESSURE SWITCHES REQUIRED FOR ALL INSTALLTIONS ABOVE 5000 FEET
Part Number
S1-1PS3302
S1-1PS3306
S1-1PS3307
18
Max. Equivalent Length (ft)
2 65
3 90
4 150
2 65
3 90
4 150
2 30
3 90
4 150
Max. Equivalent Length (ft)
2 55
3 80
4 145
2 55
3 80
4 145
2 20
3 80
4 145
Max. Equivalent Length (ft)
2 50
3 75
4 140
2 50
3 75
4 140
2 15
3 75
4 140
Max. Equivalent Length (ft)
2 45
3 70
4 135
2 35
3 70
4 135
2 10
3 70
4 135
Elevation 6001–7000
Model Input (BTUH) Pipe Size (in.)
60,000
60,000
60,000
80,000
80,000
80,000
100,000
100,000
100,000
Elevation 7001–8000
Model Input (BTUH) Pipe Size (in.)
60,000
60,000
60,000
80,000
80,000
80,000
100,000
100,000
100,000
Elevation 8001–9000
Model Input (BTUH) Pipe Size (in.)
60,000
60,000
60,000
80,000
80,000
80,000
100,000
100,000
100,000
Elevation 9001–10000
Model Input (BTUH) Pipe Size (in.)
60,000
60,000
60,000
80,000
80,000
80,000
100,000
100,000
100,000
Models
100K
60K
80K
Max. Equivalent Length (ft)
2 40
3 65
4 130
2 30
3 65
4 130
2 5
3 65
4 130
Max. Equivalent Length (ft)
2 35
3 60
4 125
2 25
3 60
4 125
2 N/A
3 60
4 125
Max. Equivalent Length (ft)
2 30
3 55
4 120
2 20
3 55
4 120
2 N/A
3 55
4 120
Max. Equivalent Length (ft)
2 25
3 50
4 115
2 15
3 50
4 115
2 N/A
3 50
4 115
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