Rapid 4044 - Caulking a Horizontal Air Handler; Figure 21: Caulking a Standard Horizontal Air Handler

4000-SERIES INSTALLATION, OPERATION AND SERVICE MANUAL
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7.2 Caulking a Horizontal Air Handler
FIGURE 21: Caulking a Standard Horizontal Air Handler
Note: Sections may vary as shown.
A
P
L
E
N
U
M
INL
ET
A
IN
LET
B
B
U
R
N
E
R
FA
N
S
E
C
T
IO
N
S
EC
T
IO
N
B
HORIZONTAL AIR HANDLER
WITH INLET PLENUM
HORIZONTAL AIR HANDLER
WITH INLET PLENUM AND
OUTSIDE AIR FILTER
HORIZONTAL AIR HANDLER
WITH INLET PLENUM AND
FILTER MIX BOX
APPLY 3" (78.7 cm) ROOF TAPE TO ALL
ROOF JOINTS. COMPONENTS MAY
VARY AS SHOWN BELOW.
A
SEC
T
I
O
N
SE
C
TION
FAN
B
URNE
R
SECTIO
N
F
ILTE
R
B
P
L
E
N
U
M
IN
L
E
T
M
IX
B
OX
SECTIO
N
B
A
B
B
A
IN
L
ET
P
LE
N
U
M
A
IN
LE
T
F
ILT
E
R
S
ECT
ION
BUR
N
E
R
F
A
N
SE
C
T
IO
N
S
E
C
TIO
N
B
B
B
“A” Type Joint (typical both sides):
Seal with a HEAVY bead of calking.
(provided by others)
“B” Type Joint:
Cover with 3" (78.7 cm) Roof Tape.
(provided by manufacturer)
NOTE:
Failure to properly caulk the air
handler joints will allow water to
enter the air handler.
Caulk supply air/return sleeves
as appropriate.
“A” Type Joint : Vertical joint on
multiple-piece air handlers and inlet
hoods. Run a HEAVY bead of caulking (provided by others).
“B” Type Joint : Roof joints on multiple-piece
air handlers and inlet hoods. Cover with
3" (78.7 cm) roof tape (provided by manufacturer).
IN
LE
T