FloAire Modular Packaged Unit - Manual (Page 4)

4
INSTALLATION
It is imperative that this unit is installed and operated with the designed airflow, gas, and electrical supply
in accordance with this manual. If there are any questions about any items, please call the service
department at 1-866-784-6900 for warranty and technical support issues.
Mechanical
WARNING: DO NOT RAISE VENTILATOR BY THE INTAKE HOOD, BLOWER OR
MOTOR SHAFT, OR BEARINGS – USE ALL LIFTING LUGS PROVIDED WITH A
SPREADER BAR OR SLINGS UNDER THE UNIT – USE CARE NOT TO DAMAGE
EXPOSED REFRIGERATIION LINES.
Site Preparation
1. Provide clearance around installation site to safely rig and lift
equipment into its final position. Supports must adequately
support equipment. Refer to manufacturer’s estimated weights.
2. Consider general service and installation space when locating
unit.
3. Locate unit close to the space it will serve to reduce long, twisted
duct runs.
4. Do not allow air intake to face prevailing winds. Support unit
above ground or at roof level high enough to prevent precipitation
from being drawn into its inlet. The inlet must also be located at
least 10 feet away from any exhaust vents. The unit inlet shall be
located in accordance with the applicable building code provisions
for ventilation air.
Assembly
Intakes and curbs are shipped unassembled. Upon unit arrival, follow the following procedure to
assemble the intake to the heater:
1. Apply silicone or weatherproof gasket on the backside of the flanges of the intake hood or v-bank
intake.
2. Screw the flanges of the intake hood or v-bank to the unit with the supplied sheet metal screws.
If the unit is a modular unit with a v-bank or evaporative cooler section, the v-bank or evaporative
cooler will bolt to the main unit with the bolts provided. Place caulk on the outside of the screws
to prevent water leaks.
Curb and Ductwork
This fan was specified for a specific CFM and static pressure. The ductwork attached to this unit will
significantly affect the airflow performance. Flexible ductwork and square elbows should not be used.
Also, transitions and turns in ductwork near the fan outlet will cause system effect and will drastically
increase the static pressure and reduce airflow. Follow SMACNA guides and recommendations for
the remaining duct run. Fans designed for rooftop installation should be installed on a prefabricated or
factory built roof curb. Follow curb manufacturer’s instructions for proper curb installation. The unit
should be installed on a curb and/or rail elevated not less than 20” above any surface. Be sure duct
connection and fan outlet are properly aligned and sealed. Secure fan to curb through vertical portion of
the ventilator base assembly flange using a minimum of eight (8) lug screws, anchor bolts or other
suitable fasteners (not furnished). Shims may be required depending upon curb installation and roofing
material. Check all fasteners for tightness. The diagrams below show different mechanical installation
configurations.
CLEARANCES
The top, back and front
surfaces of this unit may
not be installed less than 6”
from combustible materials.
The base may be installed
on combustible surfaces.
Allow 24” minimum service
clearance on both sides of
this unit. Do not enclose
top of condensers blocking
airflow.