Arcoaire MB20L2400B Manuale di istruzioni per l'installazione - Pagina 2

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INSTALLATION INSTRUCTIONS
Dimensions and Clearances − in(mm)
Figure 1
3/4" (19)
Low Voltage
Entrance
15w" (400) − 2 & 22 Ton)
194" (489) − 3 & 32 Ton
22d" (581) − 4 Ton
242" (622) − 5 Ton
GENERAL INFORMATION
WARNING
!
DEATH, PERSONAL INJURY, AND/OR PROPERTY
DAMAGE HAZARD
Failure to carefully read and follow this warning could
result in equipment malfunction, property damage, per-
sonal injury and/or death.
The information contained in this manual is intended
for use by a qualified service technician familiar with
safety procedures and equipped with the proper tools
and test instruments.
Installation must conform with local building codes and
with the National Electrical Code NFPA70 current edi-
tion.
The MB modular blower is unique and utilizes a 115vac PSC blower
motor. The MB cabinet may be used for cooling or heat pump
applications. The cabinet can be installed in an upflow, downflow or
horizontal position (Figure 3, 4).
LOCATION
Select the best position which suits the installation site conditions. The
location should provide adequate structural support, space in the front
of the unit for service access, clearance for return air and supply duct
connections, space for refrigerant piping connections and
condensate drain line connections. THESE BLOWERS ARE NOT
TO BE USED WITH ELECTRIC HEAT.
If the unit is located in an area of high humidity, nuisance sweating of
casing may occur. On these installations a wrap of 2"(51mm)
fiberglass insulation with a vapor barrier should be used.
2
14a" ' " (365) − 2 & 22 Ton
17d" (454) − 3 & 32 Ton
212" (546) − 4 Ton
238" (587) − 5 Ton
1
8
/
"
2
(216)
Line Voltage
Entrance
20
(63.5)
Specifications subject to change without notice.
5/8
"
(16)
12"
(305)
24"
(610)
All Sides
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
From Supply Duct
Recommended Service From Front
(Service for blower)
1
/
"
2
ALL DIMENSIONS in(mm)
!
CUT HAZARD
Failure to follow this caution may result in personal in-
jury.
Sheet metal parts may have sharp edges or burrs. Use
care and wear appropriate protective clothing and
gloves when handling parts.
INSTALLATIONS
The unit is ready to install in any position without modifications.
Refer to the coil instructions for information on drain pan
configurations etc. Make sure coil is set up properly for desired
position of blower cabinet.
Coil must be secured to blower cabinet with the three tabs that are part
of the blower cabinet base. Bend the tabs out from the bottom so they
fit over the coil cabinet.
Position coil cabinet in relation to the blower so they will be correct for
desired application.
For upflow and horizontal applications apply foam seal strip around
top of coil cabinet. For downflow application apply foam seal strip
around bottom of coil cabinet. Set blower on top of coil cabinet so they
are flush. Secure cabinets together using the three tabs on the bottom
of the cabinet. Bend the tab out from the bottom so it fits over the coil
cabinet. If no pilot holes are present, drill a hole as required for a
screw.
Modular Blower: MB
CLEARANCES
. . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . .
CAUTION
0"
0"
20" (508mm)
442 01 2405 01