570
Installing air hose joint ange: x four joint anges with bolts.
Installing Heat Recovery Ventilation Device
Fix anchor bolts (M10-M12) in the first place, then, put metal
suspending rack through anchor bolts and x it with spacer and
nut.
(Check against residual scraps of vinyl foam and paper inside fan
chest; check air hose inside through hose holes.)
When installed aloft, inverted suspension of the unit is needed;
please take care to x the unit tight with long foot bolts.
Connecting air hose: when connecting air hose, remember:
a. Do not connect air hose as shown by diagram on the right.
Ex.1: Avoid over bending, e.g., bend angle above 90o.
Ex.2: Avoid multiple bending.
Ex.3: Avoid reduced hose diameter,
E.g., reduced mid-section diameter prohibited.
Ex.4: Avoid bending close to outlet.
b. Air Hose Minimum Bend Radius.
Dia.100mm Hose: 100mm; Dia.150mm Hose: 150mm
Dia.200mm Hose: 300mm; Dia.250mm Hose: 375mm
c. To prevent air leakage, joint section between ange and air hose shall be wrapped with aluminum foil.
f. Install two external air hoses with regular obliquity (not below
1/30) to prevent rain water from back-flowing. At the same
time, heat insulant shall be available for all three air hoses (two
outdoor and one indoor) lest condensed water ensues. (Insulant
material: glass wool 25mm thick)
(Refer to diagram on the right)
d. To prevent short circuit, indoor air inlet shall be installed as far away from air outlet as possible.
e. Please choose air hoses with specs conforming to unit model.
g. In case of constant high temperature and humidity in
suspended ceiling, install ventilation device in ceiling.
h. Soft hose and wind softening hose can effectively reduce exhaust noises.
Fan strength and operating noise shall be considered when choosing material. Distributors of products shall be
entrusted to choose material.
i. Default distance between air outlet EA and air inlet OA shall be two times longer that hose diameter.
j. Do not use bent service lid or dome shield as external shield; otherwise, rain water will directly enter. (Deepened
shield is recommended)
k. Make sure that air hose is at least 1 meter away from shield.
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