Space-Ray Infrared Radiant Tube Heater PTS Series Installation And Operation Instructions Manual page 38

Multiple Heater Vertical venting arrangement.
Multiple Heater Horizontal venting arrangement.
PTS/PTU 40
PTS/PTU 50
PTS/PTU 75
PTS/PTU 100
PTS/PTU 125
PTS/PTU 150
PTS/PTU 175
PTS/PTU 200
Form #43343330
May 08
VENT SIZING TABLE — Multiple Heater Venting
Horizontal and vertical
1
4"
4"
4"
4"
4"
4"
4"
4"
(If a size is not available use the next larger size.)
–37–
Number of Heaters
Vertical Only
2 3
4" 4"
4" 4"
4" 5"
5" 6"
5" 6"
6" 7"
6" 7"
6" 7"
COMMON VENT DIAMETER
4
4"
5"
6"
6"
7"
7"
8"
8"