Lennox BCK 020 Installation Operating & Maintenance Manual page 14

INSTALLATION ON A ROOF MOUNTING FRAMES
ADJUSTABLE ROOFCURB DRAWINGS
2D
4D
1D
Roof opening 1795 x 1085
1D
5D
BGK
020 025
BDK
(*) This roofcurb is also necessary for all cooling only or
heatpump rooftop with auxiliary electric heater or hot
water coil.
2D
1D
Down Supply Air
2D
DownReturn Air
4D
Down main power entry
5D
Down hot water Entry
IOM / ROOFTOP BALTIC Series - 0803 - E Page 13