A1_Spec_Revisions.pdf

Crescent District Office / Revised 04-09-2014 23 81 26 - 1 of 4 SMALL SPLIT SYSTEM &

UNITARY HVAC EQUIPMENT

SECTION 23 81 26 - SMALL SPLIT SYSTEM & UNITARY HVAC EQUIPMENT

PART 1 - GENERAL

1.01 SUMMARY

A. Work Included: Materials, installation and testing of:

1. Ductless Split Systems - Cooling Only

2. Split System Condensing Unit

3. Accessory Equipment

1.02 RELATED SECTIONS

A. Contents of Section 23 00 00, HVAC Basic Requirements and Division 1, General

Requirements apply to this Section.

1.03 REFERENCES AND STANDARDS

A. References and Standards as required by Section 23 00 00, HVAC Basic Requirements and

Division 1, General Requirements.

B. In addition, meet the following:

1. ARI 610

1.04 SUBMITTALS

A. Submittals as required by Section 23 00 00, HVAC Basic Requirements and Division 1, General Requirements.

B. In addition, provide:

1. Samples: Submit one sample of wall louver.

1.05 QUALITY ASSURANCE

A. Quality assurance as required by Section 23 00 00, HVAC Basic Requirements and Division 1, General Requirements.

B. In addition, meet the following:

1. Efficiency ratings, cooling/heating performance, fan performance, sound performance to meet or exceed Basis of Design as scheduled on plans.

1.06 WARRANTY

A. Warranty of materials and workmanship as required by Section 23 00 00, HVAC Basic

Requirements and Division 1, General Requirements.

B. In addition, provide:

1. Refrigeration compressor(s): 5-year warranty.

2. Furnace heat exchanger: 5-year warranty.

Crescent District Office / Revised 04-09-2014 23 81 26 - 2 of 4 SMALL SPLIT SYSTEM &

PART 2 - PRODUCTS

2.01 MANUFACTURERS

A. Ductless Split Systems:

1. Mitsubishi

2. Sanyo

3. Daikin

4. LG

5. Carrier

6. Friederich

7. Or approved equivalent.

B. Split System Condensing Unit:

1. Trane

2. McQuay

3. Carrier

4. YORK

5. Williams

6. Environmental Technologies

7. Or approved equivalent.

2.02 DUCTLESS SPLIT SYSTEMS - COOLING ONLY

A. Description: Self-contained, matched factory-engineered and assembled. Pre-wired indoor and outdoor units. UL/ETL listed.

B. Outdoor Unit:

1. Self contained, consisting of cabinet, compressor system, condenser fan matched to indoor unit.

2. Cabinet: Fabricated of galvanized steel, bonderized, and finished with powder coated baked enamel with wind baffle.

3. Refrigerant System:

a. HFC refrigerant or other refrigerant with zero ozone depletion potential (ODP)

b. Compressor: To be inverter driven, hermetic rotary type.

4. Air System:

a. Fan: Propeller Type with one direct drive, inverter driven, variable speed motor.

b. Motor: Premium efficiency with inherent protection, permanently lubricated bearings and variable speed drive compatible.

c. Coil: Copper tubes and aluminum fins.

5. Controls: Single source for both indoor and outdoor units, with low/high pressure switch capable of communicating to/from the building DDC control system.

C. Indoor Unit(s):

1. Self contained wall mounted evaporator unit(s) matched to outdoor unit.

2. Cabinet:

a. Non-flammable, high impact polymer with a white finish.

b. Power Source: To be a single point power connection or sub-fed from outdoor condensing unit.

3. Refrigeration System: HFC refrigerant or other refrigerant with zero ozone depletion potential (ODP).

4. Air System:

a. Fan: An assembly with one or two inline fan(s) with a single direct drive motor.

Crescent District Office / Revised 04-09-2014 23 81 26 - 3 of 4 SMALL SPLIT SYSTEM &

b. Filter: Polypropylene, furnished with the unit, removable and washable.

c. Coil: Direct expansion type with copper tubes mechanically bonded into aluminum fins.

5. Condensate Drain:

a. Provide drain pan sloped to drain away from unit. Drain pan with a single drain connection.

b. Condensate pump kit provided with unit.

c. Secondary drain pan; Condensate overflow shut-off float switch and external alarm to

DDC system.

6. Controls: Wired thermostat. Control to be integral with unit.

2.03 SPLIT-SYSTEM CONDENSING UNIT

A. Description: Cooling operation, Energy Star labeled. Unit matched to indoor evaporator fan unit; low ambient operation to 20 degrees F.

B. Cabinet: Fabricated of galvanized steel and finished with powder coated baked enamel with

Hail Guard.

C. Refrigeration System:

1. HFC Refrigerant or other refrigerant with zero ozone depletion potential (ODP).

2. Hermetically sealed compressor, high-efficiency, integral high/low pressure and temperature protection, liquid line filter dryer.

3. Options:

a. Long Line Accessory Kit

b. Solenoid Valve

c. Crankcase Heater

d. Head pressure control.

e. Evaporator frost controls.

D. Condenser Air System:

1. Condenser Fan: Propeller type with direct drive motor, low sound generator.

2. Condenser Fan Motor: Premium efficiency, permanently lubricated, totally enclosed with built-in current and thermal overload protection.

3. Condenser Coil: Copper tubes mechanically bonded into aluminum fins.

a. Provide Hail Guard.

E. Controls: Completely internally wired, microprocessor, high and low pressure cutouts, contractors and internal overload protection on all motors. Provide low ambient operation to 40 degrees F outside to maintain condensing temperature on part load operation. Provide anti-short cycle timer and time delay between compressor operation.

PART 3 - EXECUTION

3.01 INSTALLATION

A. Provide vibration isolation.

B. Provide Seismic restraint.

C. Install with required clearances and access for maintenance.

D. Condensate piped to indirect waste connection; cleanouts at changes of direction; sized and sloped to drain per Code. Secondary drain routed to visible location.

E. Install factory furnished devices for field installation.

Crescent District Office / Revised 04-09-2014 23 81 26 - 4 of 4 SMALL SPLIT SYSTEM &

3.02 FIELD QUALITY CONTROL

A. Inspect for and remove shipping bolts, blocks and tie-down straps.

B. After energizing units: Test units for proper fan rotation. Test and adjust controls and internal safeties. Replace malfunctioning units and retest.

C. Thoroughly clean exposed portions of equipment. Install new filters prior to final test and balance and again prior to final acceptance.

END OF SECTION

Crescent District Office / Revised 04-09-2014 23 82 00 - 1 of 3 TERMINAL HEAT TRANSFER

EQUIPMENT

SECTION 23 82 00 - TERMINAL HEAT TRANSFER EQUIPMENT

PART 1 - GENERAL

1.01 SUMMARY

A. Work Included: Materials, installation and testing of:

1. Fan Coil Unit

2. Electric Wall Heaters

1.02 RELATED SECTIONS

A. Contents of Division 23, HVAC and Division 01, General Requirements apply to this Section.

1.03 REFERENCES AND STANDARDS

A. References and Standards as required by Section 23 00 00, HVAC Basic Requirements and

Division 01, General Requirements.

1.04 SUBMITTALS

A. Submittals as required by Section 23 00 00, HVAC Basic Requirements and Division 01, General Requirements.

1.05 QUALITY ASSURANCE

A. Quality assurance as required by Section 23 00 00, HVAC Basic Requirements and Division

01, General Requirements.

1.06 WARRANTY

A. Warranty of materials and workmanship as outlined in Section 23 00 00, HVAC Basic

Requirements and Division 01, General Requirements.

PART 2 - PRODUCTS

2.01 MANUFACTURERS

A. As specified in Articles below.

B. Or approved equivalent.

2.02 FAN COIL UNIT

A. Manufacturers:

1. Trane

2. Carrier

3. McQuay

4. York

5. Williams

Crescent District Office / Revised 04-09-2014 23 82 00 - 2 of 3 TERMINAL HEAT TRANSFER

6. Environmental Technologies

7. Or approved equivalent.

B. Description: horizontal fan coil unit with cabinet, direct expansion (DX) cooling coil, hot water heating coil, fan and motor assembly, filter and controls. UL listed and wired per NEC.

C. Cabinet: 18 gauge, welded and bolted construction, removable panels for access, ½-inch fiberglass interior insulation, condensate drain pan.

D. Coils: Seamless copper tubes with aluminum fins mechanically bonded to tubes, 250 PSI working pressure with manual air vent.

E. Fan and Motor: Forward curved centrifugal fan or fans, steel or aluminum construction, direct or belt drive, multi-speed permanent split capacitor motor with thermal overload protection, or electronically commutated motor, permanently lubricated bearings.

F. Filter: 2-inch, MERV 13 filters..

G. Drain Pan: 18 gauge galvanized steel, insulated with fire retardant closed cell foam, 7/8-inch

OD male sweat fittings, overflow drain connection and pitched for positive drainage.

H. Secondary Drain Pan: 18 gauge galvanized steel with 7/8-inch OD male sweat fitting and pitched for proper drainage. Provide secondary drain pan below horizontal fan coil units.

I. Configuration: As scheduled on drawings.

J. Electrical:

1. Junction box: Pre-wire control components to junction box.

2. Disconnect: Unit mounted disconnect switch on interior of unit.

3. Fan Relay

4. Single point power supply.

5. 24 Volt transformer wired to low voltage control terminal strip, wired to fan relay.

K. Control: Third party direct digital control system interface to accomplish sequences and provide points shown in Section 23 09 00.

2.03 ELECTRIC WALL HEATERS

A. Manufacturers

1. Trane

2. Markel

3. Qmark

4. Chromalox

5. Or approved equivalent.

B. Description: Wall mounted forced air unit heater, including enclosure for surface or recessed mounting, fan and motor, heating elements and wall box. UL listed and wired per NEC.

C. Cabinet: 20 gauge zinc coated steel, 16 gauge painted exterior grille

D. Fan and Motor: Propeller type fan, totally enclosed motor with permanently lubricated bearings and thermal overload protection, vandal proof.

E. Heating Element: Sealed tubular type with finned heating elements, manual reset thermal limit safety switch, fan purge limit to dissipate residual heat on heater shutdown.

F. Control: Built-in thermostat with accessible disconnect switch.

Crescent District Office / Revised 04-09-2014 23 82 00 - 3 of 3 TERMINAL HEAT TRANSFER

PART 3 - EXECUTION

3.01 INSTALLATION

A. Avoid interference with structure and with work of other trades, preserving adequate headroom and clearing doors and passageways. Check each piece of equipment for defects, verifying that items function properly and that adjustments have been made.

B. Fan Coils: Install per manufacturer's instructions.

C. Damaged Coils: Make every effort to prevent damage to both built-up coils and coils of packaged equipment. Comb damaged coil fins to be straight.

3.02 ELECTRIC HEAT INSTALLATION

A. Electric Wall Heaters:

1. Install per manufacturer's instructions. Comply with NEC and UL listings.

2. Install heaters in place with box trim flush with finished wall.

3. Install thermostat as shown on drawings. Provide control wiring from thermostat to unit.

3.03 EXPANSION AND CONTRACTION

A. Provide for expansion of heating water lines with suitable anchors and swing joints or expansion bends made up with pipe fittings.

3.04 CLEANING

A. Prior to acceptance, thoroughly clean exposed portions of terminal heat transfer equipment, remove shipping labels and traces of foreign substance. Touch up scratched surfaces of radiant panels with factory matching paint.

END OF SECTION