238200 Convection Heating and Cooling Units seismic.pdf

UPGRADE EMERGENCY POWER IN BUILDING 138

VAMC, MARION, IN PROJECT: 610-16-104

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SECTION 23 82 00

CONVECTION HEATING AND COOLING UNITS

PART 1 - GENERAL

1.1 DESCRIPTION

This section specifies unit heaters.

1.2 RELATED WORK

A. Section 01 00 00, GENERAL REQUIREMENTS.

B. Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, a nd SAMPLES

C. Section 13 05 41, SEISMIC RESTRAINT REQUIREMENTS FOR NON-STRUCTURAL

COMPONENTS: Seismic restraints for equipment.

D. Section 23 05 11, COMMON WORK RESULTS FOR HVAC: General mechanical requirements and items, which are common to more th an one section of

Division 23.

E. Section 23 05 41, NOISE and VIBRATION CONTROL FO R HVAC PIPING and

EQUIPMENT: Noise requirements.

F. Section 23 05 93, TESTING, ADJUSTING, and BALANC ING FOR HVAC: Flow rates adjusting and balancing.

G. Section 23 31 00, HVAC DUCTS and CASINGS: Ducts and flexible connectors.

1.3 QUALITY ASSURANCE

Refer to Paragraph, QUALITY ASSURANCE, in Section 23 05 11, COMMON WORK

RESULTS FOR HVAC. Provide guarantee in accordance w ith FAR clause

52.246-21

1.4 SUBMITTALS

A. Submit in accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT

DATA, and SAMPLES.

B. Manufacturer's Literature and Data:

1. Unit heaters.

C. Certificates:

1. Compliance with Article, QUALITY ASSURANCE.

2. Compliance with specified standards.

D. Operation and Maintenance Manuals: Submit in acc ordance with Article, INSTRUCTIONS, in Section 01 00 00, GENERAL REQUIREM ENTS.

1.5 APPLICABLE PUBLICATIONS

A. The publications listed below form a part of thi s specification to the extent referenced. The publications are referenced in the text by the basic designation only.

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B. National Fire Protection Association (NFPA):

90A-2018................Standard for the Installati on of Air

Conditioning and Ventilating Systems

70-2017.................National Electrical Code

C. Underwriters Laboratories, Inc. (UL):

1995-2015...............Heating and Cooling Equipme nt

PART 2 - PRODUCTS

2.1 UNIT HEATERS

A. General: Vertical discharge type for electric he ating medium.

B. Casing: Steel sheet, phosphatized to resist rust and finished in baked enamel. Provide hanger supports.

C. Fan: Propeller type, direct driven by manufactur er's standard electric motor. Provide resilient mounting.

D. Electric Units: UL listed, factory wired to term inal strips for field connection of power and control wiring.

1. Heating elements: Nickel chromium alloy resistan ce wire embedded in a magnesium oxide insulating refractory and sealed in corrosion resisting metallic sheath with fins. Three phase he aters shall have balanced phases.

2. Thermal cutout: Manual reset type, which disconn ects elements, and motor in the event normal operating temperatures ar e exceeded.

3. Magnetic contactor: Factory installed with low v oltage relay for remote pilot duty thermostat operation.

E. Controls: Provide field installed remote wall mo unted line voltage electric space thermostats for each unit, where sho wn.

PART 3 - EXECUTION

3.1 INSTALLATION

A. Work shall be installed as shown and according t o the manufacturer’s diagrams and recommendations.

B. Handle and install units in accordance with manu facturer's written instructions.

C. Support units rigidly so they always remain stat ionary. Cross-bracing or other means of stiffening shall be provided as n ecessary. Method of support shall be such that distortion and malfuncti on of units cannot occur.

3.2 OPERATIONAL TEST

Refer to Section 23 05 11, COMMON WORK RESULTS FOR HVAC.

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