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Chapter 1- Introduction, Page 1-6__________________________________________________________
Explanation of Damper Options
1. CG3-UVi-SPC Ventilator – This is the standard Ventilator
and incorporates a damper at the air inlet slot that
during a wash mode closes forward by and electric
motor to seal off the inlet slot and opens to the exhaust
position when the exhaust fan is started. During a fire
condition a thermostat activates the damper motor
which closes the damper backwards to the fire position
and stays closed until the thermostat drops below its set
point and then closes to the wash position.
2. CG3-UVi-SPC-FDL Series – The FDL in the model number
stands for Fire Damper Lockout.
incorporates the same inlet damper as the CG3-UVi-SPC
that during a wash mode closes forward by and electric
motor to seal off the inlet slot and opens to the exhaust
position when the exhaust fan is started.
difference is the CG3-UVi-FDL has a Fire Damper
Lockout (FDL) bracket added that prevents the inlet
damper from closing to the fire position, so it does
NOT have a fire damper. This Ventilator includes a
thermostat so that in the event of a fire send a signal is
sent to the building fire alarm systems.
3. CG3-UVi-SPC-FDT Series – The FDT in the model
number stands for a fuse link Fire damper in the Duct
collar with a Thermostat. The fire damper is weighted
and when the fuse link reaches its melting point, the
damper closes. When the thermostat reaches its set
point, a signal is sent to the building fire alarm
systems.
This Ventilator
The main
Figure 1-6-1
Section View
CG3-UVi-SPC
Figure 1-6-2
Section View
CG3-UVi-SPC-FDL
Figure 1-6-3
Section View
CG3-UVi-SPC-FDT
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