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Split System Heat Pumps

Installation Instructions

15

5. Remove screws from compressor mounting plate.

6. Remove or disconnect crankcase heater from

compressor base.

7. Remove compressor from unit.

8. Clean system. Add new liquid line filter drier.

9. Install new compressor on compressor mounting

plate and position in unit. Connect suction and

discharge lines to compressor. Secure mounting

plate with compressor to unit.

Connect wiring. Install crankcase heater.

10. Evacuate and recharge unit.

11. Restore unit power.

Follow safety codes and wear safety glasses and work

gloves.

Crankcase Heater

-- The heater prevents refrigerant

migration and compressor oil dilution during shutdown

whenever compressor is not operating.

Both compressor service valves must be closed whenever

the crankcase heater is deenergized for more than 6 hours.

The crankcase heater is operable as long as the control

circuit is energized.

Outdoor Unit Fans

-- Each fan is supported by a

formed--wire mount bolted to the fan deck and covered with

a wire guard. Fan motors have permanently lubricated

bearings. The exposed end of the motor shaft is covered

with a rubber boot. In case a fan motor must be repaired or

replaced, be sure the rubber boot is put back on when the

fan is reinstalled and be sure the fan guard is in place

before starting the unit.

Coil Cleaning and Maintenance

-- This section discusses

the cleaning and the maintenance of standard coils.

Routine cleaning of coil surfaces is essential to minimize

contamination build--up and remove harmful residue.

Inspect coils monthly and clean as required.

CLEANING STANDARD COILS

-- Standard coils can be

cleaned with a vacuum cleaner, washed out with low

velocity water, blown out with compressed air, or brushed

(do not use wire brush). Fan motors are dripproof but not

waterproof. Do not use acid cleaners.

Clean coil annually or as required by location or outdoor air

conditions. Inspect coil monthly and clean as required. Fins

are not continuous through coil sections. Dirt and debris

may pass through first section and become trapped,

restricting condenser airflow. Use a flashlight to determine

if dirt or debris has collected between coil sections.

Clean coil as follows:

1. Turn off unit power.

2. Remove screws holding rear corner posts and top

cover in place. Pivot top cover up 12 to 18 in. (300 to

450 mm) and support with a board or other adequate

rigid support. See Fig. 7.

3. Remove clips securing tube sheets together at the

return bend end of the coil. Carefully spread the ends

of the coil rows apart by moving the outer sections.

See Fig. 8.

4. Using a water hose or other suitable equipment, flush

down between the sections of coil to remove dirt and

debris.

5. Clean the remaining surfaces in the normal manner.

6. Reposition outer coil sections. Reinstall clips which

secure tube sheets, and replace top cover and rear

corner posts.

7. Restore unit power.

Figure 7 -- Pivot and Support Top Cover

Figure 8 -- Coil Cleaning (Typical)

Содержание CHS180

Страница 1: ...Save This Manual for Future Reference 506 01 2002 01 5 07 07 Installation Start Up and Service Instructions Models CHS180 Split System Heat Pump Three Phase 208 230 460 Volt...

Страница 2: ...l after the unit is rigged into its final location REDUCED EQUIPMENT LIFE AND PERSONAL INJURY HAZARD mproper installation adjustment alteration service or maintenance can void the warranty The weight...

Страница 3: ...risdictions may prevail Side compressor 3 1 2 ft 1067 mm Side opposidte compressor 3 ft 914 mm Ends 2 ft 616 mm Top 5 ft 1524 mm Support Point Unit Total Weight 1 2 3 4 CHS180 803 158 243 244 158 365...

Страница 4: ...unit must be level and supported above grade by beams platform or a pad Platform or pad can be of open or solid construction but should be of permanent materials such as concrete bricks blocks steel...

Страница 5: ...door unit is above the outdoor unit the riser will function as a hot gas riser If the outdoor unit is above the indoor unit the riser is a suction riser Use a reduced diameter riser design and constru...

Страница 6: ...Failure to prevent collection of copper oxides may result in system component failures VAPOR LINE PIPING PROCEDURE Connect system vapor line to the vapor line stub on the outdoor unit and the vapor st...

Страница 7: ...must be grounded N EXAMPLE Supply voltage is 460 3 60 AB 452 v BC 464 v AC 455 v 452 464 455 Average Voltage 3 1371 3 457 Determine maximum deviation from average voltage Maximum deviation is 7 v Dete...

Страница 8: ...Split System Heat Pumps Installation Instructions 8 Fig 5 208 230 Volt Wiring Details...

Страница 9: ...Split System Heat Pumps Installation Instructions 9 Fig 5 208 230 Volt Wiring Details Cont with control box CHS180H N A...

Страница 10: ...Split System Heat Pumps Installation Instructions 10 Fig 6 460 Volt Wiring Details...

Страница 11: ...Split System Heat Pumps Installation Instructions 11 Fig 6 460 Volt Wiring Details Cont with control box CHS180L N A...

Страница 12: ...Split System Heat Pumps Installation Instructions 12 Fig 6 Auxiliary Box Diagram...

Страница 13: ...START UNIT The field disconnect is closed the fan circuit breaker is closed and the space thermostat is set above ambient so that there is no demand for cooling Only the crankcase heater will be ener...

Страница 14: ...compressor When TC2 closes demanding additional cooling the compressor loads to full load operation During heating compressor is always fully loaded When TH1 demands first stage heating the heat pump...

Страница 15: ...es the cleaning and the maintenance of standard coils Routine cleaning of coil surfaces is essential to minimize contamination build up and remove harmful residue Inspect coils monthly and clean as re...

Страница 16: ...Split System Heat Pumps Installation Instructions 16...

Страница 17: ...Split System Heat Pumps Installation Instructions 17...

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