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035-15713-003 REV. A (0500)

Unitary Products Group

9

9.

Tightening couplings.
a.

Tighten indoor coil couplings with wrenches; using
wrench on stationary fitting of coupling and liquid
line fitting at coil while nut is being tightened. See
Figure 9. Tighten the nut until the coupling bottoms
out.

b.

Then tighten an additional 1/6 turn to complete the
knife edge seal.

c.

Tighten outdoor unit couplings, with wrenches using
a wrench on the stationary fitting of the coupling
while nut is being tightened. Tighten the nut until the
coupling bottoms out.

d.

Then tighten an additional 1/6 turn to complete the
knife edge seal.

10. Check for leaks.

a.

After the line set connections have been made they
should be checked for leaks.

b.

If the valves were kept clean and lubricated per
instruction no leaks should be found. 

c.

Use leak detect solution or soap solution for leak
testing. An electronic leak detector is recom-
mended.

ELECTRICAL WIRING

POWER SUPPLY

All wiring must comply with N.E.C. and local codes. See rat-
ing plate and product data sheet for volts, frequency, phase,
maximum fuse size and minimum branch circuit ampacity.
Refer to the wiring diagram inside the unit control box cover
before connecting to power supply.
1.

The 208/230 volt single phase line voltage service wiring 
for the outdoor unit must include a disconnect switch 
located within sight of the outdoor unit.

2.

Use the correct size fuse or circuit breaker as listed on 
the unit rating plate and data sheet. If using nonmetallic-
sheathed cable (NM or NM-B) ampacities shall be that of 
60° C conductors per N.E.C 336-26.

3.

Wiring connections. - Two are provided in the control 
box:
a.

One for low voltage wiring.

b.

One entrance for high voltage L1 and L2.

The adjustable High Voltage Conduit Plate is factory installed
for 1/2" conduit connections. For 3/4" conduit, remove the
screw holding the plate in place and adjust the location of the
holes. For 1" conduit, remove the conduit plate and discard.
Re-install screw to maintain the integrity of the unit structure,
regardless of the conduit being used. See Figures 10, 11 &
12.
4.

Power connection to the unit is facilitated by screw termi-
nals, L1 and L2 on the outdoor unit contactor. See Fig-
ures 10, 11 & 12.

5.

Ground the outdoor unit using the ground lug provided. 
Unless the outdoor unit is grounded through proper wir-
ing to the service entrance ground, a suitable separate 
ground should be provided at the outdoor unit.

6.

Use copper conductors only.    

 FIGURE 9 : 

QUICK CONNECT COUPLING 
CONNECTION

To prevent electrical shock, open remote disconnect
so electrical supply to outdoor unit is shut off. Con-
tactor does not open both sides of the 208/230 volt
electrical circuit.

Casing or cabinet must be permanently grounded in
accordance with National Electric Code or other
applicable local codes.

Summary of Contents for 10 Seer

Page 1: ...TATS 4 INDOOR UNITS 4 REFRIGERANT LINE SWEAT FIT 4 INSULATION OF VAPOR LINE 5 RE ASSEMBLING BRAZING AND CLEANING OF JOINT CONNECTIONS 5 REFRIGERANT LINE SUPPORT 5 CHARGING AND LEAK TESTING 5 TOTAL LIN...

Page 2: ...nd in accordance with the recommendations made by the National Board of Fire Underwriters Limitations for the indoor unit coil and appropriate accesso ries must also be observed The outdoor unit must...

Page 3: ...rom the coil can reduce capacity loss due to wind chill effect Provide ample clearance from shrubs to allow adequate air to pass across the outdoor coil without leaves or branches being pulled into th...

Page 4: ...y important when setting up a refrigeration system and need to be followed completely to insure that a strong flexible and leak tight system is obtained The installation of the copper refrigerant tubi...

Page 5: ...r sags occur We recommend four feet between supports If refrigerant lines are to be attached to the home structure care should be taken to eliminate the transmission of vibra tions Attach the refriger...

Page 6: ...t leaks Replace valve cap finger tight then tighten an additional 1 6 of a turn with a wrench using a back up wrench on the valve body OIL TRAPPING When the outdoor unit is above the indoor coil oil t...

Page 7: ...data sheet Do not use any line sets other than those shown 2 Copper tubing will work harden a The pre charged tubing should be handled carefully b Do not bend or work the tubing any more than nec essa...

Page 8: ...oil b Remove plugs and caps from connections c Check that the rubber seals in connection ends are intact d Be sure surfaces are clean e Lubricate the rubber seals with clean refrigerant oil and make c...

Page 9: ...must include a disconnect switch located within sight of the outdoor unit 2 Use the correct size fuse or circuit breaker as listed on the unit rating plate and data sheet If using nonmetallic sheathe...

Page 10: ...he low voltage junction box See Figures 10 11 12 2 Using wire nuts connect the low voltage wiring within the low voltage box 3 A minimum of 19 AWG wire must be used in connecting the low voltage contr...

Page 11: ...035 15713 003 REV A 0500 Unitary Products Group 11 FIGURE 13 DEMAND DEFROST BOARD 14 SEER FIGURE 14 TIME TEMPERATURE DEFROST BOARD 10 12 SEER...

Page 12: ...035 15713 003 REV A 0500 12 Unitary Products Group FIGURE 15 TYPICAL RESIDENTIAL AIR HANDLER FIGURE 16 TYPICAL MANUFACTURED HOUSING INSTALLATION...

Page 13: ...power to the transformer for at least two seconds TIME TEMPERATURE DEFROST The defrost control is a time temp control which includes a field selectable white tap located at board edge time period bet...

Page 14: ...AND DEFROST The test pins labeled speed up and defrost are provided to aid in field servicing of the heat pump See Figure 14 The pins are designed to be temporarily shorted together either by a screwd...

Page 15: ...035 15713 003 REV A 0500 Unitary Products Group 15 FIGURE 18 FLOW DIAGRAM 060 10 SEER FIGURE 19 FLOW DIAGRAM 024 THRU 048 14 SEER...

Page 16: ...er temperature pulls the liquid into the tank cavity and out of circulation within the system All R 22 likes a nice cool place to rest The net effect is that in cooling mode the system is using the wh...

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