A. All Work Specified in This Section Is Governed by the Mechanical General Section 15010 s1

SECTION 15997

CONTROLS

PART 1 - GENERAL

1.1 DESCRIPTION

A. All work specified in this Section is governed by the Mechanical General Section 15010.

B. This Section 15971 and the accompanying drawings cover the provision of all labor, equipment, appliances and materials, and performing all operations in connection with the construction and installation of the Automatic Controls as specified herein and as shown. This work includes, but is not limited to, the following: 1. Thermostats 2. Life safety shutdowns and interlock wiring 3. Relays, contactors and transformers 4. Wiring 5. Coordination with packaged equipment controls

1.2 SCOPE OF WORK

A. The scope of work includes, but is not limited to, provision of all equipment, hardware and devices for a complete system of automatic temperature control and integrated life safety functions.

1.3 AUTOMATIC LIFE SAFETY SHUTDOWNS

A. All recirculating air systems which supply air to paths of egress (exits, corridors, lobbies, etc.) shall be provided with smoke detectors in the supply and all return air paths for automatic shutdown of that system in the event of smoke detection.

B. All recirculating air systems having a design airflow capacity of 2000 CFM or greater shall have smoke detectors provided to detect the presence of smoke and automatically stop the fan(s): 1. In the supply system downstream of the filters. 2. In the return system prior to any mixing with outside air.

C. Smoke detectors shall be provided in accordance with NFPA 72E. No system shall restart until the controls are manually reset. D. Activation of any smoke detector shall sound on audible alarm in a normally occupied area of the building.

E. Detector trouble condition shall be indicated visually or audibly in a normally occupied area of the building and shall be identified as air duct detector trouble.

15997 - 1 LK 00000 1.4 INTENT

A. It is the intent of this Section of the specifications to provide a complete, operable, adjusted Automatic Control System as shown and specified which is free of hunting and excessive cycling.

1.5 ACCEPTABLE MANUFACTURERS

A. Acceptable manufacturers for the automatic controls are Carrier, Honeywell and Trane.

B. All automatic controls shall be installed by technicians who are either directly employed by the manufacturer or are properly trained technicians in the direct employ of an authorized dealer and installer for the manufacturer.

PART 2 - PRODUCTS

2.1 THERMOSTATS

A. Thermostats for split systems shall be as specified in Section 15671. Unit heater thermostats and fan thermostats shall be line voltage thermostats with adjustable setpoint.

B. Thermostats for package terminal air conditioning units shall be provided by the unit manufacturer for remote mounting as shown on the drawings.

2.2 COVERS

A. Vandal-resistant, wrench or key-locked, aspirating covers shall be provided over all thermostats.

PART 3 -EXECUTION

3.1 INSTALLATION

A. The controls shall be installed in strict accordance with the manufacturer's recommendations. B. The control system shall be completely wired under this Division 15. Wiring shall be in accordance with the N.E.C. and shall meet all requirements for this installation. See Section 15010, Mechanical General, for additional requirements for wiring.

3.2 SEQUENCES OF OPERATION

A. Unit Heaters 1. Unit heaters shall be controlled by integral electric thermostats. Thermostats shall be set to energize the unit at a 55 degrees F. set point (adjustable).

15997 - 2 LK 00000 B. Package Terminal Air Conditioning Units 1. All units shall operate under self-contained controls to maintain space setpoint temperature.

END OF SECTION

15997 - 3 LK 00000