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# 48283B006

Page 3

Figure 2

Slab Mounting

2° or 2" per 5' slope tolerance away from building
structure.

Discharge Air

Mounting Slab

Ground Level

Building

Structure

Figure 3

Wind Barrier Construction

Prevailing Winter Winds

24"

Wind Barrier

Inlet Air

Inlet Air

Inlet Air

Electrical Wiring

All field wiring must be done in accordance with the
National Electrical Code (NEC) recommendations,
Canadian Electrical Code (CEC) and CSA Standards, or
local codes, where applicable.

Unit must be grounded in accordance with
national and local codes. Failure to ground unit
properly can result in personal injury or death.

  WARNING

Refer to the furnace or blower coil Installation Instructions
for additional wiring application diagrams and refer to unit
rating plate for minimum circuit ampacity and maximum
overcurrent protection size.

1. Install line voltage power supply to unit from a properly

sized disconnect switch. Any excess high voltage field
wiring should be trimmed or secured away from the
low voltage field wiring.

2. Ground unit at unit disconnect switch or to an earth

ground. To facilitate conduit, a hole is in the bottom of
the control box. Connect conduit to the control box using
a proper conduit fitting. Units are approved for use only
with copper conductors. 24V Class II circuit connections
are made to the low voltage pigtails. A complete unit
wiring diagram is located inside the unit control box
cover (see also pages 16 and 17 of this instruction).

3. Install room thermostat on an inside wall that is not

subject to drafts, direct sunshine, or other heat sources.

4. Install low voltage wiring from outdoor to indoor unit and

from thermostat to indoor unit (see Figure 4).

5. Do not bundle any excess 24V control wire inside control

box. Run control wire through installed wire tie and tighten
wire tie to provide low voltage strain relief and to maintain
separation of field-installed low and high voltage circuits.

Refrigerant Piping

Field refrigerant piping consists of liquid and suction lines
from the outdoor unit (sweat connections) to the indoor
coil (flare or sweat connections).

Select line set diameters from Table 2 on page 4 to
ensure that oil returns to the compressor. Size vertical

Thermostat Designations

Figure 4

See unit wiring diagram for power supply connections.
If the indoor unit is not equipped with a blower relay,
one must be field supplied and installed.
Do not connect C (common) connection between
indoor unit and thermostat except when required by
the indoor thermostat. Refer to thermostat installation
instructions. C (common) connection between indoor
unit and outdoor unit required for proper operation.

Power

Indoor Unit

Thermostat

Outdoor

Unit

Y1 Outdoor Unit

Heat

Cooling

Indoor Blower

R

W1

Y

G

C

R

W

Y

G

C

C Outdoor Unit

Содержание 2SCU13 Series

Страница 1: ...trical shock Disconnect all remote power supplies before installing or servicing any portion of the system Failure to disconnect power supplies can result in property damage personal injury or death W...

Страница 2: ...or inspection by the carrier s agent If any damages are discovered and reported to the carrier DO NOT INSTALL THE UNIT as claim may be denied Check the unit rating plate to confirm specifications are...

Страница 3: ...rcuit connections are made to the low voltage pigtails A complete unit wiring diagram is located inside the unit control box cover see also pages 16 and 17 of this instruction 3 Install room thermosta...

Страница 4: ...although vertical lift applications and trapping require ments need to be reviewed with Technical Services for line sets over 50 energy or vibration can be expected Close attention to line set isolat...

Страница 5: ...line Floor Joist or Roof Rafter Metal Sleeve Floor Joist or Roof Rafter Tape or Wire Tie Wire Tie around vapor line only Refrigerant Line Sets Installing Horizontal Runs Figure 7 Refrigerant Line Sets...

Страница 6: ...t damage to the valve core and opening port The tube end must stay bottomed in the fitting during final assembly to ensure proper seating sealing and rigidity 7 Install the factory supplied fixed orif...

Страница 7: ...id and Suction Line Service Valves The liquid line and suction line service valves and service ports are used for leak testing evacuating charging and checking charge Each valve is equipped with a ser...

Страница 8: ...e line set connections and indoor unit must be checked for leaks Ball Type Service Valve Valve Open Figure 11 Use adjustable wrench To open rotate stem counterclockwise 1 4 turn 90 To close rotate ste...

Страница 9: ...HCFC 22 into the line set and indoor unit Weigh in a trace amount of HCFC 22 A trace amount is a maximum of 2 oz of refrigerant or 3 lbs pressure Close the valve on the HCFC 22 cylinder and the valve...

Страница 10: ...d has been satisfied switch the thermostat to cooling mode with a set point of 68 F When pressures have stabilized use a digital thermometer to record the liquid and suction line temperatures 6 The ou...

Страница 11: ...e F _____ Saturation Temperature F _____ Liquid Line Temperature F _____ Subcooling Value F r o o d t u O p m e T F F 1 g n i l o o c b u S d i u q i L 8 1 4 2 0 3 6 3 2 4 8 4 0 6 5 6 3 1 3 1 7 4 1 5...

Страница 12: ...e 7 Approach Values for TXV Systems Approach value is the liquid line temperature minus the outdoor ambient temperature 1 F NOTE For best results use the same digital thermometer to check both outdoor...

Страница 13: ...1 8 8 6 2 9 7 8 6 2 4 8 5 6 2 5 8 7 7 2 1 8 F 5 1 1 4 9 2 6 8 7 0 3 5 8 9 9 2 3 8 9 0 3 1 8 8 0 3 5 8 3 0 3 6 8 8 1 3 3 8 C F R e c i f i r O d e x i F F 5 6 4 4 1 3 7 7 4 1 8 6 0 4 1 6 6 0 5 1 7 6 7...

Страница 14: ...or correct voltage at unit with unit operating 6 Check amp draw outdoor fan motor Unit nameplate _________ Actual _________ NOTE If owner complains of insufficient cooling the unit should be gauged an...

Страница 15: ...nician ________________________________________ Nameplate Voltage ______________ Rated Load Ampacity ________ Compressor _______________ Outdoor Fan ___________________ Maximum Fuse or Circuit Breaker...

Страница 16: ...OCAL CODES OUTDOOR FAN F C H 1 2 3 R S C C 2 3 1 EQUIPMENT GROUND HR1 L2 208 230 60 1 L1 K1 1 BLACK YELLOW RED RED C12 BLACK ORANGE B4 PURPLE K1 S4 S24 A4 C Y1 TO 24 VAC POWER SOURCE 20 VA MINIMUM NEC...

Страница 17: ...2 L3 EQUIPMENT GROUND HR1 S40 K1 1 BLACK BLACK B1 BLACK ORANGE BLACK B4 C1 PURPLE RED 1 FOR USE WITH COPPER CONDUCTORS ONLY REFER TO UNIT RATING PLATE FOR MINIMUM CIRCUIT AMPACITY AND MAXIMUM OVERCURR...

Страница 18: ...the only warranty made by the warrantor this warranty is in lieu of and excludes all other warranties express or implied The warrantor does not authorize any person to provide any other warranty or to...

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