This master should be used by designers working on Port of Portland construction projects and by designers working for PDX tenants (“Tenants”). Usage notes highlight a few specific editing choices, however the entire section should be evaluated and edited to fit specific project needs.

SECTION 232220 - HVAC PUMPS

PART 1 - GENERAL

1.1  DESCRIPTION

  1. This section describes in-line pumps and base-mounted centrifugal pumps.

1.2  RELATED WORK SPECIFIED ELSEWHERE

  1. Section 230500, Common Work Results for HVAC
  2. Section 230529, Hangers and Supports for HVAC Piping and Equipment
  3. Section 230545, Seismic Restraints for HVAC Piping and Equipment
  4. Section 230548, Vibration and Seismic Controls for HVAC Piping and Equipment
  5. Section 230553, Identification for HVAC Piping and Equipment
  6. Section 230593, Testing, Adjusting, and Balancing
  7. Section 230719, HVAC Insulation
  8. Section 230900, Instrumentation and Controls for HVAC
  9. Section 232000, HVAC Piping

1.3  QUALITY ASSURANCE

  1. Pump impellers shall not be greater than minimum impeller size plus 90 percent of the difference between the maximum and minimum impeller size for pump selected.
  2. Motor shall be non-overloading under all operating conditions.

1.4  SUBMITTALS

  1. For each item specified herein, submit product/material data; shop drawings; operation and maintenance data; as-constructed data; installation, startup, and testing manuals; operation and maintenance manuals; and as-constructed drawings.
  2. Include with product data for each pump: performance curves, motor data, operating weights, and pressure ratings.
  3. Include control information and wiring diagram for packaged equipment.

Use B only if Commissioning Section 019100 is included in the project manual.

  1. For each item specified herein, submit commissioning plan and schedules; checkout, startup, operational, functional and final acceptance test plans, procedures, checklists, and reports; systems manuals; and operator and maintenance training plans.

PART 2 - PRODUCTS

Tenants: Throughout Part 2, delete all instances of “or pre-bid approved equal” and replace with “no substitution,” unless otherwise noted.

2.1  IN-LINE CIRCULATING PUMP

  1. Acceptable Manufacturers: Armstrong, Bell & Gossett, Grundfos, Paco, Taco, or pre-bid approved equal.
  2. Description:
  3. Pipe-mounted, integral centrifugal pump and resiliently mounted motor.
  4. Flexible coupling between pump and motor.
  5. Mechanical shaft seals.
  6. Bronze fitted or stainless steel impeller.
  7. Rising head characteristics with decrease in volume.
  8. Drip-proof construction.
  9. Motor: For energy efficient motor requirements, see Section 230500, Common Work Results for HVAC.

2.2  BASE-MOUNTED CENTRIFUGAL PUMP

  1. Acceptable Manufacturers: Armstrong, Aurora, Bell and Gossett, Paco, Peerless, Taco, Thrush, or pre-bid approved equal.
  2. End suction centrifugal pump, motor and flexible coupling drive, all mounted on a common baseplate of structural steel with welded cross members and open grouting area.
  3. 175 psig working pressure unless otherwise noted.
  4. Enclosed type, single stage, bronze impeller.
  5. Mechanical shaft seal, regreasable ball bearings.
  6. Motor: 1750 rpm maximum speed, completely enclosed. See Section 230500, Common Work Results for HVAC, for energy efficient motor requirements.
  7. Pump internals capable of being serviced without disturbing piping connections or motor.
  8. Coupling drive with suitable guard.

PART 3 - EXECUTION

3.1  IN-LINE CIRCULATING PUMP INSTALLATION

  1. Motor horizontally or vertically depending on normal design of pump.
  2. Provide convenient access to oil cups for servicing and as required by the manufacturer.
  3. Provide flexible connections, strainers, check valve, and shut-off valves on suction and discharge of pumps.
  4. Lubricate in accordance with the manufacturer’s instructions before operation.
  5. Support and isolate circulators.

3.2  BASE-MOUNTED CENTRIFUGAL PUMP INSTALLATION

  1. Install pump in accordance with the manufacturer’s instructions.
  2. Install on isolation base or housekeeping pad as specified.
  3. Provide valves and specialties on suction and discharge.
  4. Lubricate in accordance with the manufacturer’s instructions before operation.
  5. Support interconnecting piping independently to prevent stresses from being transmitted to the casings.

Choose 3.3 or 3.4. Use 3.4 if Commissioning Section 019100 is included.

3.3  COMMISSIONING

  1. Commission items specified herein.

3.4  FIELD TESTING

  1. Sump Pump: After installation is complete, conduct a test of the system as follows:
  2. Operate complete pump sequence to assure proper operation of pumps with respect to fluid level in sumps.
  3. Confirm proper operation of lead lag sequencing.
  4. Confirm operation of both remote and local alarm devices.

END OF SECTION 232220

7/2/2012 / HVAC PUMPS
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