Install Instructions

2
INSTALLATION WARNINGS
This Power Ventilator must be installed by a qualified installer in accordance with these instructions and all local codes or in their
absence in accordance with the latest edition of the National Electrical Code (NFPA#70) and the Occupational Safety and Health
Act (OSHA) when applicable. An improper installation of this product can create hazardous conditions such as an explosion, fire
and electrical shock resulting in property damage, personal injury or death.
Failure to install, maintain and/or operate the Power Ventilator in accordance with the manufacturer’s instructions may result in
conditions which can produce bodily injury or property damage.
DO NOT handle this product without Hand Protection. Unit can have sharp edges that can cause damage to property and injury to
personnel.
DO NOT exceed 200
o
F / 93
o
C duct exhaust temperature to the CDB8 inlet. Excessively hot exhaust air at the unit can damage
the motor which will not be covered by warranty.
DO NOT use this Power Ventilator on Incinerators, Incinerating toilets, Condensing-Type Appliances or Sold Fuel Appliances.
DO NOT use this Power Ventilator outdoors in unsheltered conditions. This unit was designed to be mounted and used indoors
where it is not exposed to water and the motor ambient temperature remains between 40
o
F and 110
o
F.
CAUTIONS
The CDB8 must be installed by a qualified installer (an individual properly licensed and/or trained) in accordance with all local
codes or, in their absence, in accordance with the National Electrical Code. Failure to install, maintain and/or operate the CDB8
in accordance with manufacturer's instructions may result in conditions which can produce bodily injury and property damage.
1. Disconnect power supply from the CDB8 when making wiring connections and servicing. Failure to do so may result
in personal injury and/or equipment damage.
2. All installation restrictions and instructions must be followed when using the CDB8.
3. Make certain power source is adequate for the CDB8 Exhaust Fan requirements. Do not add equipment to a circuit when the
total electrical load is unknown.
INSTALLATION LAYOUT AND CONSIDERATIONS
When planning the installation of the CDB8, consider the following:
In anticipating the duct run (Length and Elbows), does the total CFM of all dryers to be exhausted align with the CDB8's perfor-
mance rating including any De-Rating at higher elevations.
Will the duct run termination be sidewall or roof mounted? Has the termination hood been defined and does it have a low back
pressure rating like the Tjernlund DEVH8 or DEVH12 Exhaust Hoods?
Will the CDB8 be used as a 90
o
elbow or will it be mounted within a straight duct run where the IEK8 In-Line Elbow Kit is required?
Has the mounting point, orientation and required hardware to mount the CDB8 been determined?
In consideration of the Power Supply Options, Power to the CDB8 is to be provided by a installer supplied Power Disconnect with
Load Protection. Will the system be powered by a and Manual On / Off switch also provided by the installer or by way of one of the
following Tjernlund Offered Options:
A. COP2DB Constant Operating Pressure Controller for automatic, variable speed operation of CDB8.
B. Part Number 950-8415 - On / Off Manual Speed Control . (Common on Large Single Dryers).
C. Model DR10 - Dryer Duct Booster Pressure Switch with Timing Circuit.
Has each of the dryers been identified and has the service manual for each been reviewed to determine the Minimum and
Maximum dryer vent static pressure values and method of measure? (Max of 0.40" WC is Common)
Dryer 1 Max. Static Pressure +/-________" W.C, Min. Static Pressure + ________ " W.C.
Dryer 2 Max. Static Pressure +/-________" W.C, Min. Static Pressure + ________ " W.C.
Dryer 3 Max. Static Pressure +/-________" W.C, Min. Static Pressure + ________ " W.C.
Is the "Make Up" air for all of the dryers sufficient and operational?