Field Controls 46139100 Instructions Manual page 3

INSTALLATION OF SWG POWER VENTER (See Table 1)
Table 1
OIL GAS
MAX* MAX**
OIL GPH BTU/HR.
INPUT IMPUT
N/A 70,000
1.10 170,000
1.85 290,000
2.65 416,000
3.60 566,000
4.75 740,000
*Rating at 100 psi. Sizing based on appliance maximum input rate not actual firing rate. **Do not exceed maximum BTU/HR input rating or maximum oil
GPH input. For multiple venting system applications, add the input for each appliance. Category I gas-fired draft induced systems require an SWGII-4HD
or larger. Category III gas-fired draft induced systems require an SWGII-5 or larger.
UNIT SIZING CHART
MAXIMUM EQUIVALENT FEET OF VENT
PIPE
AT MAX BTU/HR
INPUT
21
50
---
---
35
65
16
51
95
28
68
100
28
61
90
26
51
70
AT 60% OF MAX VENTING WITH
BTU/HR INPUT VENT PIPE SIZE
80
100
---
23
100
100
44
100
100
78
100
100
78
100
100
72
100
100
Page 3
MODEL
3"
SWG-3
4"
---
3"
SWGII-4HD
4"
SWG-4s
5"
4"
SWGII-5
5"
SWG-5s
6"
5'"
SWGII-6
6"
SWG-6s
7"
6"
7" SWG-7
8"
7"
SWG-8
8"
9"