7
Figure 1. Upfl ow & Downfl ow Installation
Upflow
Configuration
Downflow
Configuration
Figure 3. Front Bracket Installation - (Upfl ow Only)
Front Br
ack
et
Figure 2. Rear Bracket Installation - (Upfl ow Only)
Rear Br
acke
t
Modular Air Handler
Cased Coil
Upflow
Configuration
3. Remove the lower front bracket (Figure 9, page 17)
from the modular unit. Retain the screws for later use.
4. Attach the front joining bracket to the front of the modular
unit. Align
the screw holes in the bracket with the holes
from the lower front bracket and the top panel of the
coil case. See Figure 3.
5. Secure the bracket with the screws removed earlier in
steps 1 & 2.
6. Attach the rear joining bracket to the backside of the
modular unit and cased coil. Position the bracket so that
it is fl ush with the sides and back of the units with the
1/2” insulation facing the rear gap between the units.
7. Secure the rear bracket with self tapping screws.
Downfl ow Installation
The MB6 Series Modular Air Handler may be installed in
a downfl ow confi guration as shown in Figure 1. Return
air must enter through the top of the unit.
1. Remove the lower front bracket (Figure 9, page 17)
from the modular unit. Retain the screws for later use.
2. Remove the door from the cased coil and the screws
(on the side of the cased coil) securing the lower tie bar
in place. Retain the screws for later use.
NOTE:
Before
mating the modular unit with the cased coil, clean the
mating surfaces on both units.
3. Flip the modular unit upside down and apply the black
neoprene gasket tape to the top of the indoor blower.
NOTE:
The blowers fl anged surface is now beneath the
air handler and will connect with the supply air duct.
Figure 4. Downfl ow Brackets
Rear
Bracket
Front
Bracket
Cased
Coil
Modular
Air Handler
