Energy Tech Laboratories MR212 Manuale Utente

 

5

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. 

 

 

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 heater inlet shall be located in accordance with the applicable building code 
provisions for ventilation air.  All air to the heater must be ducted from the outdoors.  Recirculation 
of room air is not permitted.  If in doubt regarding the application, consult the manufacturer. 

Intakes and curbs are shipped unassembled.  Upon unit arrival, follow the following procedure to 
assemble the intake to the heater:

 

1.  Apply silicone or weather-proof gasket on 

the back side 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 heater with the bolts provided.

 

 

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.  The chart below shows the minimum fan outlet duct 
sizes and straight lengths recommended for optimal fan performance.  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