Install Manual: PY036ML (Updated 4/7/2022)

INSTALLATION INSTRUCTIONS
Step 4-3. Installing an Exterior Roof or Wall Mounted Remote Blower (HYEX)
10
Model Number: HYEX-1.0 / HY-EX-1.4
Maximum rated CFM: 1000 CFM / 1400 CFM
Volts/Hz/Amps: 115VAC, 60 Hz, 2.9A (HYEX-1.0) / 3.3A (HYEX-1.4)
Required duct size: HYEX-1.0: 8” Round (51 sq. in. equiv.) / HYEX-1.4: 10” Round (80 sq. in. equiv.)
FLAT OR LOW SLOPE ROOF
1. For flat roofs or roofs having pitch less than 1 ½” rise
in 12”, mount blower on roof curb. See Figure 1
2. Install the blower with discharge pointing down slope
and away from prevailing winds.
3. Use flashing and roofing mastic to seal the unit to
prevent leaks.
4. Cut holes for ducting and electrical wiring as shown
in Figure 2.
Figure 1
Figure 2
IMPORTANT: Remove foam block(s) from
inside housing before operating
TYPICAL ROOF MOUNT
1. Center the duct cutout between roof rafters
2. Install the blower so its discharge is down slope and
away from prevailing winds. According to the
standard roofing procedures, shingles must cover
rear flashing flange and a minimum of 12” of the
side flanges. The flashing on the discharge side of
the blower must rest on top of the shingles.
3. The blower must be sealed between the roof and its
underside with quality roofing mastic.
Figure 3
DUCT CONNECTIONS
1. Use only round metal duct, elbows and transitions;
or rectangular ducting having equivalent cross-
sectional area per required duct size.
2. Tape or use joint sealant on all joints.
3. Make sure damper opens and closes freely.
For electrical connection, see Step 4-5. Wiring Remote Blowers (HYEX or ATEX)
7”
9”
Blower
Housing
Cover
▪ (X) indicates area to drill
pilot holes for attachment
to roof or curb.
▪ Seal mount screw heads
with roofing mastic.
▪ Use grommeted stainless
steel sheet metal screws
for attachment.