Reznor DV Operation Manual (for units built before August 2003) - Manual (Page 19)

Form O-DV/RDF/ADF, P/N 148385, Page 18
15. Inlet Air Controls
(cont'd)
WARNING: Burner
profile plates are
factory set to match
CFM requirements. Do
not adjust profile plates
without contacting your
Sales Representative for
technical assistance.
lOption AR1 - a constant supply of 100% makeup air
lOption AR19 - 100% outside makeup air with variable supply air volume
(CFM). The discharge damper controlling the variable air supply is controlled
by a manually set remote potentiometer and can be varied from 100% to 20-
25% of total rated airflow (CFM). In response to changes in the discharge
damper setting, the bypass damper balances the volume of air so that the re-
quired fixed amount of air volume flows over the burner.
lOption AR20 - 100% outside makeup air with variable supply air volume
(CFM). The discharge damper controlling the variable air supply is automati-
cally controlled by a building pressure sensor and can be varied from 100% to
20-25% of total rated airflow (CFM). In response to changes in the discharge
damper setting, the bypass damper balances the volume of air so that the re-
quired fixed amount of air volume flows over the burner.
lOption AR22 - a combination of outside makeup air and bypass return air
including modulating return air and bypass air dampers. The volume of out-
side air is regulated by a remotely located, manually set potentiometer.
lOption AR23 - a combination of outside makeup air and bypass return air
including modulating return air and bypass air dampers. The volume of out-
side air is regulated automatically by a remotely located building pressure
sensor.
lOption AR32 - a combination of outside makeup air and bypass return air
including a two-position actuator. The two position actuator changes the posi-
tion of the damper to provide either 100% outside air or 20% outside/80%
return air. Control is from a SPDT toggle switch mounted on a 4x4 box (or if
ordered, the switch is mounted on a remote console).
lOption AR33 - 100% outside makeup air with variable supply air volume
(CFM). The discharge damper controlling the variable air supply is automati-
cally controlled by a 0-10 VCD or 4-20 milliamp signal. In response to changes
in the discharge damper setting, the bypass damper balances the volume of air
so that the required fixed amount of air volume flows over the burner.
lOption AR34 - a combination of outside makeup air and bypass return air
including modulating return air and bypass air dampers. The volume of out-
side air is regulated by a 0-10 VCD or 4-20 milliamp signal.
lOption AR35 - a constant supply of 100% makeup air to the unit but in-
cluding a two-position inlet shutoff damper that closes the dampers when the
system is not operating. The damper attaches to the duct flange of the optional
inlet base (used only with the optional inlet base that has three closed sides and
a duct connection for outside air).
lOption AR36 - 100% outside makeup air with variable supply air volume
(CFM). The discharge damper controlling the variable air supply is automati-
cally controlled by a remotely located photohelic pressure sensor. In response
to changes in the discharge damper setting, the bypass damper balances the
volume of air so that the required fixed amount of air volume flows over the
burner.
lOption AR37 - a combination of outside makeup air and bypass return air
including modulating return air and bypass air dampers. The volume of out-
side air is regulated by a remotely located photohelic pressure sensor.
Function: Dampers operate in response to controls to provide the rated flow of
makeup air to the building. Minimum outside air is 20-25%.
Service: Clean all dampers of dust or dirt.
OPERATION/SERVICE SECTION (cont'd)
Airflow Dampers