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132 VAV-PRC011M-EN
Pneumatic Controls
T-Stat Branch Pressure (kPa)
T-Stat Branch Pressure (PSI)
Cooling
% Flow (CFM)
3
8
Heating
Min
CFM
CFM
Max
100
20.7
55.2
13 15
LPS
Min
LPS
Max
100
89.6
103.4
Optional or installed by others.
Factory installed.
Customer Notes:
1.
Remote Mounted
Two Pipe
T-Stat
(Direct Acting)
Restrictor
Tee
Restricted Leg
One Pipe Inset
One Pipe
Remote Mounted
(Direct Acting)
T-Stat
Actuator
Flow Ring
LO
HI
Volume
Regulator
M
B
H
L
T
Actuator
Flow Ring
LO
HI
Volume
Regulator
M
B
H
L
T
Heating Cooling
Heating Cooling
% Flow (LPS)
(Direct Acting)
Remote Mounted
One Pipe Inset
Optional or installed by others.
CoolingHeating
Cooling
T-Stat Branch Pressure (PSI)
T-Stat Branch Pressure (kPa)
3
8
Heating
Max
% Flow (CFM)
CFM
Min
CFM
100
20.7
55.2
1. Factory installed.
1513
(Direct Acting)
T-Stat
Two Pipe
Remote Mounted
Customer Notes:
103.4
100
Max
LPS
Min
LPS
89.6
% Flow (LPS)
Restrictor
Tee
One Pipe
Restricted Leg
T-Stat
B
M
Flow Ring
Actuator
Heating
LO
HI
Cooling
Flow Ring
Actuator
Regulator
Linear
Reset
Volume
H
L
T
LO
HI
M
Regulator
Linear
Reset
Volume
B
H
L
T
(137.9)
20
S
(137.9)
S
20
(137.9)
S
20
(137.9)
S
20
(137.9)
20
S
S
20
(137.9)
S
20
(137.9)
S
20
(137.9)
PC03 – VDDF - Dual-Duct Terminal Units
(Normal Operation: Cooling and Heating)
Normally-Closed Heating Damper with Actuator, Normally-pen Cooling Damper with Actuator, and
3011 Pneumatic Volume Regulator (Qty of 2) (Direct-Acting Thermostat)
PN10 – VDDF - Dual-Duct Terminal Units
(Normal Operation: Cooling and Heating - Constant Volume)
Normally-Open Heating Damper with Actuator, Normally-Open Cooling Damper with Actuator, and
3501 Pneumatic Volume Regulator (Qty of 2) (Direct-Acting Thermostat)
in Discharge
With an increase in room temperature, the thermostat output pressure is increased. This signal is input to the volume regulators,
which also receives the inputs from the high- and low-pressure from the flow ring. The cooling volume regulator outputs a signal
compensated for changing duct pressure to the valve actuator, which opens the damper and increases primary cooling airflow to the
space. The heating valve is at a minimum flow. With a decrease in room temperature, the heating valve modulates in response to
signals from the heating pneumatic volume regulator, while maintaining constant volume at the discharge. The heating minimum
and maximum settings and the constant volume settings are maintained by the volume regulators.
With an increase in room temperature, the thermostat output pressure is increased. This signal is input to the volume regulators,
which also receives the inputs from the high- and low-pressure from the flow ring. The cooling volume regulator outputs a signal
compensated for changing duct pressure to the valve actuator, which opens the damper and increases primary cooling airflow to the
space. The heating valve is at a minimum flow. With a decrease in room temperature, the heating valve modulates in response to
signals from the heating pneumatic volume regulator. The heating valve is at a minimum flow. Both heating and cooling minimum
and maximum settings are maintained by the volume regulators.
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