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Page  4
Manual   2100-292

Application and Location

General

These instructions explain the recommended method to install the
air cooled remote type condensing unit, the interconnecting
refrigerant tubing and the electrical wiring connections to the unit.

The condensing units are to be used in conjunction with the
matching evaporator coils or evaporator blower units for comfort
cooling applications as shown in the specification sheet.

These instructions and any instructions packaged with any separate
equipment required to make up the entire air conditioning system
should be carefully read before beginning the installation. Note
particularly “Starting Procedure” and any tags and/or labels
attached to the equipment.

While these instructions are intended as a general recommended
guide, they do not supersede any national and/or local codes in any
way. Authorities having jurisdiction should be consulted before the
installation is made.

Shipping Damage

Upon receipt of equipment, the carton should be checked for
external signs of shipping damage. If damage is found, the
receiving party must contact the last carrier immediately,
preferably in writing, requesting inspection by the carrier’s agent.

Application

Size of unit for a proposed installation should be based on heat
loss calculation and air duct sizing made according to methods of
Air Conditioning Contractors of America. The air duct should be
installed in accordance with the Standards of the National Fire
Protection Association for the Installation of Air Conditioning and
Ventilating Systems of Other Than Residence Type, NFPA 90A,
and Residence Type Warm Air Heating and Air Conditioning
Systems, NFPA 90B. Where local regulations are at a variance
with instructions, installer should adhere to local codes.

Figure 2 — Installation Clearance

The condensing unit is designed to be located outside with free and
unobstructed condenser air inlet and discharge. It must also permit
access for service and installation.  Condenser air enters the coil
and discharges.  Refrigerant and electrical connections are made
from the rear of the unit as shown in Figure 2 with electrical
service access.

Mounting Unit Outside on Slab

A solid level base or platform, capable to support the unit’s
weight, must be set at the outdoor unit predetermined location. The
base should be at least two inches larger than the base dimensions
of the unit and at least two inches higher than surrounding grade
level. The required unit minimum installed clearances must be
maintained as called out in Figure 2 when locating and setting the
base.

Remove the unit from its shipping carton and position the unit on
the prepared base or platform.

Do not attach the unit or its base to the building structure to avoid
the transmission of noise into the occupied area.

NOTE: These units employ internally sprung compressors;

therefore, it is not necessary to remove or loosen the base
mounting bolts on the compressor prior to operation.

Consideration should be given to the electrical and tubing
connections when placing the unit to avoid unnecessary bends or
length of material.

Important Installer Note

For improved start-up performance, wash the indoor coil with a
dishwater detergent.

Installation Refrigerant Tubing

The information that follows on installing refrigerant tubing and
for changing the system orifice (if required) covers applications
listed in the front of this installation instruction only. Although
other indoor units may be of similar construction, the installation
instructions for these units should be consulted for proper
installation of those units prior to installation.

Location

NOTE:  ALL DIMENSIONS
IN INCHES

Summary of Contents for CTHAC181-A

Page 1: ...AC181 D CTHAC241 A CTHAC241 D CTHAC301 A CTHAC301 D CTHAC361 A CTHAC361 G CTHAC421 A CTHAC421 E CTHAC421 F CTHAC421 G CTHAC481 A CTHAC481 B CTHAC481 E CTHAC481 E CTHAC481 G CTHAC601 A CTHAC601 B CTHAC601 E CTHAC601 F CTHAC601 G For Use With Matching Indoor Blower Coil Units and Matching Add On Coil Units Only ...

Page 2: ...l 3 Shipping Damage 3 Application 3 Location 3 Mounting Unit Outside on Slab 3 Important Installer Note 3 Installing Refrigerant Tubing 3 Sweat Style Tubing Connections Sweat Indoor Unit and Sweat Outdoor Unit 4 Wiring Instructions 7 General 7 Control Circuit Wiring 7 Option Controls 8 Installation Instructions CMA 1 8 Installation Instructions CMA 2 9 Installation Instructions CMA 4 9 Installatio...

Page 3: ...F 415 380 50 3 G 220 200 50 1 Modification Code Capacity 3 Ton or Approx 36 000 BTU Basic Model Number Figure 1 MIS 617 Condensing Unit Model Number Evaporator Coil Model Number CFM System Orifice Required CTHAC181 FCP24 CEVA018 600 600 0 051 0 050 CTHAC201 FCP24 CEVA024 800 800 0 059 0 061 CTHAC301 FCP30 CEVA030 1000 1000 0 065 0 063 CTHAC361 FCP36 CEVA036 1200 1200 0 072 0 065 CTHAC421 FCP42 122...

Page 4: ...re size R Maximum time delay fuse or HACR type circuit breaker Table 3 Specifications MODELS CTHAC181 A CTHAC241 A CTHAC301 A CTHAC361 A CTHAC421 A Electrical Rating 60HZ V Ph 230 208 1 230 208 1 230 208 1 230 208 1 230 208 1 Operating Voltage Range 197 253 197 253 197 253 197 253 197 253 Minimum Circuit Ampacity 15 15 19 20 25 QField Wire Size 14 14 12 12 10 RDelay Fuse Maximum or Circuit Breaker...

Page 5: ...5 155 180 180 180 250 250 Q 75º C copper wire size R Maximum time delay fuse or HACR type circuit breaker S For high voltage control circuit options consult factory Table 4 Specifications continued MODELS CTHAC481 G CTHAC481 E CTHAC481 F CTHAC481 G CTHAC601 E CTHAC601 F Electrical Rating 50HZ V Ph 220 200 1 220 200 3 415 380 3 220 200 1 220 200 3 415 380 3 Operating Voltage Range 180 220 180 242 3...

Page 6: ...ions installer should adhere to local codes Figure 2 Installation Clearance The condensing unit is designed to be located outside with free and unobstructed condenser air inlet and discharge It must also permit access for service and installation Condenser air enters the coil and discharges Refrigerant and electrical connections are made from the rear of the unit as shown in Figure 2 with electric...

Page 7: ... from the union nut to the bulkhead Then tighten an additional 1 6 turn or 1 hex flat The misalignment of the line will show the amount the assembly has been tightened This final 1 6 turn is necessary to insure the formation of the leakproof joint Figure 3 Installing Refrigerant Tubing Sweat Style Tubing Connections Sweat Indoor Unit and Sweat Outdoor Unit Use only refrigeration grade dehydrated a...

Page 8: ...e fluxes To further prevent the formation of copper oxide inside the tubing dry nitrogen may be purged through the refrigerant system during brazing WARNING Never purge or pressurize a system with oxygen An explosion and fire will result Step 10 After brazing quench with wet rag to cool the joint and remove any flux residue Step 11 Leak test all connections using an electronic leak detector or a h...

Page 9: ...it wiring gauge needed to insure proper operation of all controls in both indoor and outdoor units will depend on two factors 1 The rated VA of the control circuit transformer 2 The maximum total distance of the control circuit wiring This is the distance between the wall thermostat to the indoor unit plus the distance between the indoor unit to the outdoor unit The following table should be used ...

Page 10: ... the high pressure switch on the discharge line with the flare tee adapter that is brazed to the high pressure switch Check for pressure at the flare tee dill valves after installation to insure that the dill valve in the unit service port was depressed by the flare tee connector Check for leaks at the flare tee connectors Replace service port cap on the flare tee service port and tighten Step 6 R...

Page 11: ...ver Step 1 Snap control assembly into control panel as shown in Figure 5 Step 2 Disconnect yellow low voltage Y wire at compressor contactor coil or Y1 at optional CMA 5 and reconnect to terminal 4 of the lockout relay Step 3 Connect yellow wire from terminal 3 of the low pressure bypass TDR to the Y terminal of the compressor contactor coil or Y1 at optional CMA 5 This is the terminal that the wi...

Page 12: ...or lead from compressor contactor and reconnect to terminal block Step 3 Route low ambient control wires up through the bushing in the bottom of the control panel Connect the low ambient control wires between the terminal block and T2 of the compressor contactor Step 4 Remove service port cap on discharge line Install the low ambient control on the discharge line with the flare tee adapter that is...

Page 13: ...ing in the bottom of the control panel Connect the low ambient control wires between the terminal block and T2 of the compressor contactor Step 9 Remove service port caps on both the suction and discharge lines Install the high pressure switch and low ambient control on the discharge line with the flare tee adapter that is brazed to the controls Install the low pressure switch on the suction line ...

Page 14: ...heat as determined from the following calculations A Measure outdoor air dry bulb temperature ________ºF B Measure indoor air wet bulb temperature ________ºF C Measure suction pressure ________PSIG D Measure suction line temperature ________ºF E Determine optimum system superheat from Table 9 using outdoor air dry bulb Step B and indoor air wet bulb Step A ________ºF F Determine saturated suction ...

Page 15: ... Periodic cleaning of the outdoor coil to permit full and unrestricted air flow circulation is essential Fan Blade Setting Dimensions Shown in Figure 12 are the correct fan blade setting dimensions for proper air delivery across the outdoor coil Any service work requiring removal or adjustment in the fan and or motor area will require that the dimensions below be checked and blade adjusted in or o...

Page 16: ...rge being in the system the charge should be removed system evacuated and recharged to serial plate instructions Low side pressure 2 PSIG High side pressure 5 PSIG Tables are based upon rated CFM airflow across the evaporator coil If there is any doubt as to correct operation charge being in the system the charge should be removed system evacuated and recharged to serial plate instructions Indoor ...

Page 17: ...arge being in the system the charge should be removed system evacuated and recharged to serial plate instructions Low side pressure 2 PSIG High side pressure 5 PSIG Tables are based upon rated CFM airflow across the evaporator coil If there is any doubt as to correct operation charge being in the system the charge should be removed system evacuated and recharged to serial plate instructions Indoor...

Page 18: ...ature Pressure 75 80 85 90 95 100 105 110 115 FCP48 75 DB 62 WB Low Side 70 72 74 77 79 81 84 86 88 High Side 191 205 220 234 249 263 278 293 307 80 DB 67 WB Low Side 75 77 79 82 84 86 89 91 93 High Side 195 210 225 240 255 270 285 300 315 85 DB 72 WB Low Side 81 83 85 88 90 92 95 97 99 High Side 202 218 233 249 264 278 295 310 326 CEVA048 75 DB 62 WB Low Side 63 65 67 70 70 74 76 79 81 High Side ...

Page 19: ...105 110 115 FCP60 75 DB 62 WB Low Side 68 70 72 75 77 79 82 84 86 High Side 194 211 228 246 263 280 298 315 332 80 DB 67 WB Low Side 73 75 77 80 82 84 87 89 91 High Side 199 217 235 252 270 288 305 323 341 85 DB 72 WB Low Side 79 81 83 86 88 90 93 95 97 High Side 207 225 243 261 279 297 315 333 351 CEVA060 75 DB 62 WB Low Side 60 61 63 64 65 66 67 68 70 High Side 197 210 222 235 248 261 273 286 29...

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