5000 |
| |
4500 |
| |
4000 | LEAK IN | |
3500 | ||
SYSTEM | ||
3000 | ||
| ||
2500 |
| |
MICRONS2000 | VACUUM TIGHT | |
1500 | ||
TOO WET | ||
1000 | ||
TIGHT | ||
500 | ||
DRY SYSTEM | ||
|
DISCONNECT
PER N. E. C. AND/ OR LOCAL CODES
FIELD POWER
WIRING
FIELD GROUND
WIRING
CONTACTOR
GROUND
LUG
A91306
0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
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|
| MINUTES |
|
| A95424 | |
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|
|
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Fig. 8—Deep Vacuum Graph
5.Repeat this procedure as indicated in Fig. 9. System will then contain minimal amounts of contaminants and water vapor.
FINAL TUBING CHECK
IMPORTANT: Check to be certain factory tubing on both indoor and outdoor unit has not shifted during shipment. Ensure tubes are not rubbing against each other or any sheet metal. Pay close attention to feeder tubes, making sure wire ties on feeder tubes are secure and tight.
Step 7—Make Electrical Connections
To avoid personal injury or death, do not supply power to unit with compressor terminal box cover removed.
Be sure field wiring complies with local and national fire, safety, and electrical codes, and voltage to system is within limits shown on unit rating plate. Contact local power company for correction of improper voltage. See unit rating plate for recommended circuit protection device.
NOTE: Operation of unit on improper line voltage constitutes abuse and could affect unit reliability. See unit rating plate. Do not install unit in system where voltage may fluctuate above or below permissible limits.
NOTE: Use copper wire only between disconnect switch and unit.
EVACUATE
BREAK VACUUM WITH DRY NITROGEN
WAIT
EVACUATE
BREAK VACUUM WITH DRY NITROGEN
WAIT
EVACUATE
CHECK FOR TIGHT, DRY SYSTEM (IF IT HOLDS DEEP VACUUM)
CHARGE SYSTEM
Fig. 9—Triple Evacuation Method
A95425
Fig. 10—Line Power Connections
NOTE: Install branch circuit disconnect of adequate size per NEC to handle unit starting current. Locate disconnect within sight from and readily accessible from unit, per Section
ROUTE GROUND AND POWER WIRES
Remove access panel to gain access to unit wiring. Extend wires from disconnect through power wiring hole provided and into unit control box. Size wires per NEC but not smaller than minimum wire size shown in Product Data Digest.
The unit cabinet must have as uninterrupted or unbroken ground to minimize personal injury if an electrical fault should occur. The ground may consist of electrical wire or metal conduit when installed in accordance with existing electrical codes. Failure to follow this warning can result in an electric shock, fire, or death.
CONNECT GROUND AND POWER WIRES
Connect ground wire to ground connection in control box for safety. Connect power wiring to leads provided as shown in Fig. 10.
CONNECT CONTROL WIRING
Route 24v control wires through control wiring grommet and connect to leads provided in control box. (See Fig. 11.)
Use No. 18 AWG
All wiring must be NEC Class 1 and must be separated from incoming power leads.
The outdoor unit requires a minimum of 27va, 24vac control power.
IMPORTANT: Check factory wiring and wire connections to ensure terminations are secured properly. Check wire routing to ensure wires are not in contact with tubing, sheet metal, etc.
Step 8—Install Electrical Accessories
GENERAL
Refer to the individual instructions packaged with kits or acces- sories when installing.
Available electrical accessories include latent capacity control. See Fig. 11 for typical accessory wiring diagrams.
LATENT CAPACITY CONTROL (LCC)
The purpose of an LCC is to provide a dehumidification mode to assure a 75 percent or less system sensible heat ratio. If indoor unit installed contains an ECM blower (such as an FK4C, FV4A, or 40FK fan coil or a 58CVA or 58MVP gas furnace), no LCC is
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