Filter
Top Products
JANUARY 2008 UCCS STANDARDS 15950-23
a. Pneumatic signals: 0-20 psig.
b. Electric signals: 4 to 20 mA
2. Span (calibration) and start point shall be fully adjustable.
E. Indicating Gauges and Test Ports:
1. Control-signal indicating and test gauges shall be 1-1/2", back-connected, 0 to 30
psig.
2. Test ports on the air lines connected to a differential air pressure sensor shall consist
of a tee in the line with a removable cap on the branch port. Test ports on water lines
connected to a differential pressure sensor shall consist of a 1/4” size, quick-connect
type, quick disconnect on a branch line with a shutoff valve.
3. Permanent indicating gauges shall be furnished for all pneumatic transducer, EP,
controllers and relay outputs used to position actuators, valves or PE switches.
Gauges shall be in local control panels when applicable. One main (supply) air
pressure gauge shall be installed in each local control panel.
F. VAV Box Controls:
[Note to Consultant: Include this information in the VAV equipment specification.
It is the intent that the VAV box supplier provide a complete controls package
utilizing the controller listed below. In general, the Temperature Controls
Contractor should not have to provide any additional hardware, but should be
required to set them up and troubleshoot problems with them if necessary.]
1. Electric VAV box controls shall be configured to meet the specified sequence of
operation. All hardware necessary to meet the sequence of operation shall be pro-
vided. Coordinate with supplier of VAV box. (No pneumatic)
2. The Controls Contractor shall check, calibrate and setup all VAV box controllers, and
be responsible for their operation. This applies whether the controls are provided by
the Mechanical Contractor as part of the VAV box or the Temperature Controls
Contractor.
3. Provide assistance to the Test and Balance Contractor in making adjustments to the
controls.
4. See VAV box specifications for controller information.
2.09 CONTROL DEVICES - ELECTRIC
A. Room Thermostats:
1. All wall-mounted, room thermostats or sensors shall have locking covers with con-
cealed set point adjustment. Omit thermometers when possible.