Lennox BCK 020 Installation Operating & Maintenance Manual page 21

INSTALLATION ON A ROOF MOUNTING FRAMES
MULTIDIRECTIONAL HORIZONTAL ROOFCURB
2F' 2F
1F'
1F
Front supply air
1F'
Front supply air
2F Front return air
2F'
Front return air
Page 20 - IOM / ROOFTOP BALTIC Series - 0803 - E
1F
1F 2F'
BGK
BDK
(*) This roofcurb is also necessary for all cooling only
or heatpump rooftop with auxiliary electric heater or
hot water coil.
2F'
2F
1F'
WARNING : ONLY ONE OF THE 4 FOLLOWINGS POSSIBILITIES :
2F - 1F / 2F - 1F'
2F' - 1F / 2F' - 1F'
030 035
1F'
1F
2F
2F'
1F