T-Stat
One Pipe
Remote Mounted
(Reverse Acting)
One Pipe Inset
Factory installed.
Optional or installed by others.
(137.9)
T-Stat Branch Pressure (kPa)
T-Stat Branch Pressure (PSI)
100
Max
CFM
Min
CFM
% Flow (CFM)
Air Flow
3
810 1315
1st
2nd
20
20.7
69
Stages of Heat
3rd
Customer Notes:
1.
S
20
(137.9)
Restrictor
Tee
Restricted Leg
T
S
M
Regulator
Volume
15
20
Tee
Electric Heater
Terminal Box
Two Pipe
T-Stat
(Reverse Acting)
Remote Mounted
(137.9)
(103.4)
S
LPS
LPS
Max
Min
% Flow (LPS)
100
55.2
89.6
103.4
(Normal Operation: Cooling with Electric Reheat)
Normally-Closed Damper, Actuator, and 3011 Pneumatic Volume Regulator (Reverse-Acting Thermostat)
PC05 – VCCF and VCEF - Single-Duct Terminal Units
With an increase in room temperature, the thermostat output pressure is decreased. This signal is input for the volume regulator, which also receives
the inputs from the high- and low-pressure sides of the flow ring. The volume regulator outputs a signal compensated for changing duct pressure to
the valve actuator which opens the damper and increases primary cooling flow to the space. With a decrease in room temperature, the opposite
action occurs. Minimum and maximum primary airflow settings are maintained by the volume regulator. When the system is designed with reheat,
heating stages are energized at the appropriate pressure settings.
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