Product Overview

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0. 0
25. 0
50. 0
75. 0
100. 0
125. 0
150. 0
175. 0
200. 0
400 600 800 1000 1200
2. 90 3. 90 4.90 5.90 6.90 7.90
12"
PI PE
10"
PI PE
6"
PI PE
8"
PI PE
6" DUCT
REGI O N
8" DUCT
REGI O N
10" DUCT
REGI O N
12" DUCT
REGION
OIL INPUT FIRING RATE, GPH
INPUT FIRING RATE (BTU/H x 1000)
#2 OIL = 140,000 BTU/GALLON
EQUIVALENT LENGTH OF PIPE (ft.)
DIAGRAM A
CAS-6 (FAN + STARKAP SK-10) SIZING CHART
MAX. EQUIVALENT FEET OF PIPE
Diagram A
Example: An oil  red appliance  ring at 10.5 gph where a CAS-7 unit needs to be placed at a location
requiring 80' of pipe from the StarKap, using two 90
o
elbows:
From Diagram B, a vertical line is drawn through the point at 10.5 gph on the Oil Firing Rate scale. For 80
feet of 10" pipe, two 90 degree elbows, and two increaser/reducers, the equivalent length is 80 + 18 + 18 +
6 + 6 = 128' of equivalent length. A horizontal line drawn through the point at 128' on the Equivalent Length
scale intersects the vertical line in the 12" duct region of the diagram. Since the intersection is not in the 10"
duct region, recalculate the equivalent length using 12" duct: 80 + 21 + 21 + 7 + 7 = 136' of equivalent
length. A horizontal line drawn through the 136 point on the Equivalent Length scale intersects the vertical line
within the 12" duct region of the diagram; therefore, 12" duct will be of su cient size for the application.