Rapid 4044 - Caulking the Air Handler; Figure 20: Caulking Air Handler Joints

SECTION 7: AIR H ANDLER A SSEMBLY
33 of 154
7.1 Caulking the Air Handler
FIGURE 20: Caulking Air Handler Joints
3" (78.7 cm) ROOF TAPE PROVIDED BY MANUFACTURER
(NOT REQUIRED ON VERTICAL AIR
HANDLER OR INDOOR UNITS)
HOUSING SKIN
HOUSING SKIN
CAULK AFTER ASSEMBLY
HOUSING SKIN
3/8" x 3/4" STRIP
CLEAN HOUSING SKIN
3" (78.7 cm) ROOF TAPE
TYPICAL VERTICAL JOINT
PRIOR TO ASSEMBLY.
CAULK EACH VERTICAL JOINT
TYPICAL ROOF JOINT
CAULK EACH HORIZONTAL JOINT
AFTER ASSEMBLY APPLY
TYPICAL ROOF JOINT
PRIOR TO ASSEMBLY.
OF CAULKING
THE 3" (78.7 cm) ROOF TAPE
"A" Type Joint
"B" Type Joint
(CAULK PROVIDED BY OTHERS)
3/8" x 3/4" STRIP OF CAULKING
(PROVIDED BY MANUFACTURER)
TYPICAL VERTICAL JOINT
AFTER ASSEMBLY.
CAULK EACH VERTICAL EXTERIOR JOINT
NOTE: FAILURE TO PROPERLY CAULK THE AIR HANDLER JOINTS WILL ALLOW WATER TO ENTER THE AIR HANDLER.
Instructions for Roof Tape Installation:
1. Wipe surface clean and dry.
2. Peel backing off 3" (78.7cm) roof tape.
3. Apply roof tape over field joint.
4. Press tape firmly to form a tight seal (roll out if possible).
5. 3" (78.7 cm) roof tape NOT required on vertical air handlers.
6. Do not apply roof tape when outside temperature is below 40° F.
7. Roof tape is not required for indoor air handlers.