Johnson Controls MAHP18B21S - Figure 2. Pressure Check; Figure 3. Dimensions and Duct Connection Dimensions

PMGB0406B rev.1
8
Inspection
As soon as you receive the Air Handler, check to be sure it is still under pressure per Figure 2. Inspect the coil
for possible damage during transit. If damage is evident, note the extent of the damage on the carrier’s freight
bill. A separate request for inspection by the carrier’s agent should be made in writing. Consult the Local
Distributor for more information. Check the drain pan for cracks or breakage. Before installation, check the unit
for screws or bolts that may have loosened in transit. There are no internal shipping or spacer brackets that
need to be removed. Verify that all accessories are available as required. Complete the Installation of these
accessories or ¿ eld conversion of the unit before setting the unit in place or connecting any wiring, duct work
or piping.
When installing the air handler, it is important to note that the Schrader core on the suction line stub-out must
be relocated to the equalizer connection port located on the coil. See the circled ports in the ¿ gure below.
Figure 2. Pressure Check
G
A
1-1/2”
7-11/32”
C
FILTER ACCESS
DRAIN CONNECTIONS
FOR UPFLOW APPLICATIONS
REFRIGERANT CONNECTIONS
BLOWER
COMPARTMENT
BOTTOM INLET
DIMENSIONS
12-3/16”
E
D
18-5/8”
TOP OUTLET
DIMENSIONS
SERVICE
DISCONNECT
PANEL
A0329-001
B
20-1/2”
21-7/16”
F
COIL
COMPARTMENT
Figure 3. Dimensions and Duct Connection Dimensions
A0271-001
DEPRESS SCHRADER
CORE TO CHECK FOR
PRESSURE ONE TIME.
NOTE:
VERIFY THAT THE COIL IS UNDER
PRESSURE WHEN RECEIVED.
A02
7
1
-
001
D
EPRE
SS
SC
HRADER
CORE
T
O CHECK FO
R
P
RESSURE ONE
TIME
.
NOTE
:
V
ERIFY THAT THE
CO
IL I
S
UNDE
R
P
RESSURE WHEN RECEIVED.
(Ins)DX-Kit4e-rev1.inddC-8
(Ins)DX-Kit4e-rev1.inddC-8
2016/11/2515:32:13
2016/11/2515:32:13