SWG Power Venter

Sizing The Venter

Size the SWG or ComboVent venter based on the input firing rate of the appliance. If the power venter is being used to vent multiple appliances, add the input firing rates for each appliance and use that total to size the venter. Knowing the total input BTU/hr. for gas, or GPH for oil, the venter can be sized from Table 1. Select the venter rated closest to the total input BTU or GPH for installation. If the input of the appliance is higher than the maximum allowable for that size SWG or CV, move to the next larger size SWG or CV.

Do not select a venter with a maximum BTU/hr. or GPH lower than the appliance. The equivalent feet of vent pipe for the installation must be calculated. Based on the vent pipe diameter to be used, compare the calculated equivalent feet of vent pipe with the maximum equivalent feet allowable for the venter (See Table 1). If the calculated equivalent feet is greater than that allowed for the venter, increase the diameter of the vent pipe to be used and refer to the table or use the next larger size SWG or CV venter.

Note: In Table 1, the maximum equivalent footage allowable for the vent pipe is given for two points, the maximum BTU/hr. venting capacity and at 60% of the maximum. This allows for estimating values between the two given points.
Sizing The Venter Table 1 - Sizing The Venter (Use Maximum BTU or GPH Input)
MODEL MAX* OIL GPH INPUT 100psi MAX* OIL GPH INPUT 140psi MAX** GAS BTU/hr. INPUT Maximum Equivalent Feet of Vent Pipe VENT PIPE SIZE
AT MAX BTU/hr. INPUT AT 60% OF MAX BTU/hr. INPUT
SWG-3 N/A N/A 70,000 21 80 3"
50 100 4"
SWG-4HD, 4HDs, CV-4 1.10 .90 170,000 35 100 4"
65 100 5"
100 100 6"
100 100 7"
SWG-5, 5s, CV-5 1.85 1.55 290,000 16 44 4"
51 100 5"
95 100 6"
100 100 7"
SWG-6, 6s 2.65 2.25 416,000 28 78 5"
68 100 6"
100 100 7"
SWG-8 4.75 4.0 740,000 26 72 7"
51 100 8"
70 100 9"
SWG-10 9 7.5 1,300,000 10 100 8"
30 100 10"
75 100 12"
SWG-12 13.5 11.5 1,900,000 16 100 10"
40 100 12"
86 100 14"
SWG-14 21 17.75 3,000,000 8 85 12"
18 100 14"
35 100 16"
NOTE: Control Kits are required for operation of the SWG. Stainless steel recommended for oil applications.

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Table 2 - Specifications - “s” Designates stainless steel model.
Model Volts Hz Amps Watts RPM Thermal Protection A B C D E F
SWG-3 115 60 0.6 40 3000 YES 3" 5" 9 1/16" 8 1/2" 7 5/8" 9 3/16"
SWG-4HD 115 60 1.7 138 3000 YES 4" 6" 11 3/4" 9 1/2" 9" 9"
SWG-4HDs 115 60 1.7 138 3000 YES 4" 6" 11 3/4" 9 1/2" 11" 11 1/2"
SWG-5 115 60 1.3 144 3100 YES 5" 7" 11 3/4" 10 3/4" 12" 12 1/4"
SWG-5s 115 60 1.3 144 3100 YES 5" 7" 11 3/4" 10 1/2" 12" 12 1/2"
SWG-6 115 60 2.1 228 3100 YES 6" 8" 11 3/4" 10 3/4" 12" 12 1/4"
SWG-6s 115 60 2.1 228 3100 YES 6" 8" 11 3/4" 10 1/2" 12" 12 1/2"
SWG-8 115 60 4.37 478 3100 YES 8" 10" 11 3/4" 11 7/8" 13" 14 1/4"
SWG-10 115/230 60 11.4/5.7 1311 1725 YES 10" 14" 19 1/2" 24" 20" 21"
SWG-12 115/230 60 13.6/6.8 1564 1725 YES 12" 16" 19 1/2" 25" 22" 23"
SWG-14 115/230 60 14.0/7.0 1610 1725 YES 14" 18" 19 1/2" 26" 24" 25"