UV-PRC001-EN 25
Controls
End Device Package
Valves/Piping Package
Control valves are mounted in a
factory piping package to include
unions at the coil, p/t ports on the
supply and return lines, and shut-
off ball valve on the supply and re-
turn.
Cooling and heating coil valves are
only available as 3-point modulat-
ing, non-spring return type valves.
Stroke time is approximately 105-
seconds for 1/2-inch valves, and
85-seconds for 3/4-inch valves.
The ambient temperature range is
-30 F to 130 F. The valve body con-
nections are NPT threaded, and
the maximum pressure is 300 psi.
The maximum water temperature
is 200 F with a close-off pressure of
133 psi.
Note: See Page 15 in the piping
section for more information.
Damper Actuators
There are three types of damper
actuators used with the End De-
vice Package:
• Optional face and bypass ac-
tuator is 24-volt, 3-point
modulating, non-spring re-
turn. In-coming power is 24
VAC with a consumption of
2-watts. Maxmum torque of
35 in/lb and drive time is
180-seconds.
Note:
Face and bypass is available
on 2-pipe coils ONLY.
An isolation valve is not
available with the end de-
vice package.
• Optional outside-air/return-
air actuator is spring return
and takes a 3-point floating
signal. A 2-10 VDC option is
also available. It provides 25
in/lb of torque with a drive
time of 90-seconds. The
power consumption is 7 VA
with temperature limits of -
25 F to 125 F.
Fan Start/Stop Relay
The fan start/stop relay enables
the fan start and stop. The fan’s
speed is controlled by a unit
mounted fan switch. See Figure
25 for end device control
package.
Note: Factory installed crossover
piping is not available when order-
ing end device controls. The low
temperature sensor and the cool-
ing relay location prohibits cross-
over piping.
Figure 25: End device control package
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