Product Overview

24- 4397- 18, Rev. A
Product Bulletin P-3610
Issue Date February 2016
© 2016 Johnson Controls, Inc. 1
Part No. 24-4397-18, Rev. A
Code No. LIT-7171210
P-3610
High Static Pressure Limit Controller
Features
• High sensitivity
• Fast response time
• Complies with ASHRAE
recommendations
• Minimizes the possibility
of ductwork damage
The P-3610 High Static Pressure
Limit Controller is a low volume
pneumatic controller designed to
return a normally closed fan
modulation device to its closed
position when the inlet static
pressure to the P-3610 rises
above its set point. The
P-3610 is designed to minimize
the possibility of ductwork
damage in the event of
mechanical or control system
failure by limiting the duct high
static pressure buildup on the
discharge side of the fan or the
duct negative static pressure
buildup on the suction side of the
fan.
Operation
The P-3610 functions as a one-
pipe bleed control device; its
normally closed control port
opens when a duct high positive
static pressure is sensed,
bleeding down the flow controller
output line to the controlled
device. A damper actuator, for
example, receives this signal
and closes the damper, thus
reducing the duct static
pressure. By reversing the
barbed fitting on the high port
with the venting plug on the low
port, the P-3610 can be used as
a high negative static pressure
limit.
Installation
The P-3610 is factory calibrated
in the vertical position. If the
desired set point is the
3.5 in. WG (872 Pa) factory
setting and the P-3610 is to be
mounted in the horizontal
position, the controller will
require recalibration. Refer to
the Calibration section for
details.
The P-3610 has an integral
mounting flange, and a
mounting strap and bracket are
included for mounting to
ductwork.
Fig. 1: P-3610 High Static
Pressure Limit Controller
Specifications