Guide Specifications 569D072-120, 576C120

GUIDE SPECIFICATIONS — 569D072-120, 576C120 (cont)

569D072-120, 576C120, 569F120

J.Special Features:

1.Low-Ambient Temperature Control Accessory:

Low-ambient control shall be available as a factory- installed option or a field-installed accessory and shall regulate speed of condenser-fan motor in response to the saturated condensing temperature of the unit. The control shall maintain correct con- densing pressure at outdoor temperatures down to –20 F (fan motor change required for 569D and 576C units).

2. Optional Condenser Coil Materials:

a. Pre-Coated Aluminum-Fin Coils:

Shall have a durable epoxy-phenolic coating to provide protection in mildly corrosive coastal envi- ronments. Coating shall be applied to the alumi- num fin stock prior to the fin stamping process to create an inert barrier between the aluminum fin and copper tube. Epoxy-phenolic barrier shall minimize galvanic action between dissimilar metals.

b. E-Coated Aluminum-Fin Coils:

Shall have a flexible epoxy polymer coating uni- formly applied to all coil surface areas without material bridging between fins. Coating process shall ensure complete coil encapsulation. Color shall be high gloss black with gloss requirements of 60° of 65-90% per ASTM D523-89. Uniform dry film thickness from 0.8 to 1.2 mil on all surface areas including fin edges. Superior hardness char- acteristics of 2H per ASTM D3363-92A and cross hatch adhesion of 4B-5B per ASTM D3359-93. Impact resistance shall be up to 160 in./lb (ASTM D2794-93). Humidity and water immersion resis- tance shall be up to a minimum of 1000 and

250hours respectively (ASTM-D2247-92 and ASTM D870-92). Corrosion durability shall be con- firmed through testing to no less than 1000 hours salt spray per ASTM B117-90. Coil construction

shall be aluminum-fins mechanically bonded to copper tubes.

3.Thermostat Control Accessory:

a.Commercial Electronic Thermostat with 7-day timeclock, auto-changeover, multi-stage capabil- ity, and large LCD temperature display.

b.Commercial Electronic Non-programmable Ther- mostat with auto-changeover, multi-stage capacity, and large LCD display.

4.Hail Guard Accessory:

Hail guard package shall protect coils against dam- age from hail and other flying debris.

5. Condenser Coil Grille Accessory:

Grille shall add decorative appearance to unit and protect condenser coil after installation.

6. Electric Solenoid Unloader Accessory:

Electric unloader valve piston, coil, and hardware shall be supplied to convert the pressure-operated compressor unloader to electric unloading (576C120 only).

7. Unit-Mounted, Non-Fused Disconnect Switch:

Shall be factory-installed, internally mounted. NEC and UL approved non-fused switch shall provide unit power shutoff. Shall be accessible from outside the unit and shall provide power off lockout capability. Not to be used when rooftop electrical rating exceeds 80 amperes.

8. Convenience Outlet:

Shall be factory-installed and internally mounted with easily accessible 115-v female receptacle. Shall include 15 amp GFI receptacle with independent fuse protection. Voltage required to operate conve- nience outlet shall be provided by a factory-installed step-down transformer. Shall be accessible from out- side the unit.