SystemAir Topvex Series - Page 2

Topvex Series
VAV installation Kit
Systemair Inc.
2
1. Locate where the pressure tap is going to be installed. The pressure tap should be 5 duct diameters
from the applicable opening of the unit or midpoint between applicable opening and rst down-stream
obstruction (bends, splits, dampers, coils, di󰀨users, etc). Use the mounting location that allows for the
furthest distance from the unit, drill a 5/16” hole and install pressure tap.
To unit
*** If there is another AHU (i.e. DOAS, furnace, etc) in series downstream of the unit then the pressure
tap should be located downstream of the AHU as described above.
A
B
1
4
2
3
1 Outdoor Air (OA)
2 Supply Air (SA)
3 Return Air (RA)
4 Exhaust Air (EA)
A Di󰀨erential pressure transmitter & pressure tap for supply air fan
B Di󰀨erential pressure transmitter & pressure tap for exhaust air fan
Systemair Unit
DOAS, furnace, etc
READ AND SAVE THESE INSTRUCTIONS!
Danger
• Make sure that the Main power supply to the unit is disconnected before performing any
maintenance or electrical work!
• All electrical connections must be carried out by an authorized installer and in accordance with local
rules and regulations.