INSTALLER'S GUIDE CONDENSING UNITS

1 KEY TO SYMBOLS AND SAFETY INSTRUCTIONS

1.1 Key to Symbols

Warnings in this document are identified by a warning triangle. Keywords at the start of a warning indicate the type and seriousness of the ensuing risks arising from failure to take measures.

[Symbol: Warning Triangle] This symbol indicates important information where there is no risk to people or property.

The following keywords are defined and can be used in this document:

DANGER indicates a hazardous situation which, if not avoided, will result in death or serious injury.

WARNING indicates a hazardous situation which, if not avoided, could result in death or serious injury.

CAUTION indicates a hazardous situation which, if not avoided, could result in minor to moderate injury.

NOTICE is used to address practices not related to personal injury.

1.2 Safety

Important - This document contains a wiring diagram and service information. This is customer property and is to remain with this unit. Please return to service information pack upon completion of work.

[CAUTION] This information is intended for use by individuals possessing adequate backgrounds of electrical and mechanical experience. Any attempt to repair a central air conditioning product may result in personal injury and/or property damage. The manufacturer or seller cannot be responsible for the interpretation of this information, nor can it assume any liability in connection with its use.

[WARNING] HAZARDOUS VOLTAGE! Failure to follow this warning could result in property damage, severe personal injury or death. Disconnect all electric power, including remote disconnects before service. Follow proper lockout / tagout procedures to ensure the power cannot be inadvertently energized.

REFRIGERANT OIL! Any attempt to repair a central air conditioning product may result in property damage, severe personal injury, or death.

These units use R-410a refrigerant which operates at 50% to 70% higher pressures than R-22. Use only R-410a approved service equipments. Refrigerant cylinders are painted a "Rose" color to indicate the type of refrigerant and may contain a "dip" tube to allow for charging of liquid refrigerant into the system. All R-410A systems use a POE oil (VG74 or equivalent) that readily absorbs moisture from the atmosphere. To limit this 'hygroscopic" action, the system should remain sealed whenever possible. If a system has been open to the atmosphere for more than 4 hours, the compressor oil must be replaced. Never break a vacuum with air and always change the driers when opening the system for component replacement.

HIGH CURRENT LEAKAGE! Failure to follow this warning could result in property damage, severe personal injury, or death. Earth connection is essential before connecting electrical supply.

SERVICE VALVES! Failure to follow this warning will result in abrupt release of system charge and may result in personal injury and/or property damage. Extreme caution should be exercised when opening the Liquid Line Service valve. Turn valve stem counter-clockwise only until the stem contacts the rolled edge. No torque is required.

BRAZING REQUIRED! Failure to inspect lines or use proper service tools may result in equipment damage or personal injury. If using existing refrigerant lines make certain that all joints are brazed, not soldered.

[CAUTION] CONTAINS REFRIGERANT! Failure to follow proper procedures can result in personal illness or injury or severe equipment damage. Systems contain oil and refrigerant under high pressure. Recover refrigerant to relieve pressure before opening a system.

GROUNDING REQUIRED! Failure to inspect or use proper service tools may result in equipment damage or personal injury. Reconnect all grounding devices. All parts of this product that are capable of conducting electrical current are grounded. If grounding wires, screws, straps, clips, nuts, or washers used to complete a path to ground are removed for service, they must be returned to their original position and properly fastened.

HOT SURFACE! May cause minor to severe burning. Failure to follow this caution could result in property damage or personal injury. Do not touch the top of the compressor.

2 UNIT LOCATION CONSIDERATIONS

2.1 Unit Dimensions

Cold climate considerations (heat pump only)

[NOTE] Precautions must be taken for units being installed in areas where snow accumulation and prolonged below-freezing temperatures occur.

The unit's weight value is on the cardboard box.

When mounting the outdoor unit on a roof, be sure the roof will support the unit's weight. Properly selected isolation is recommended to prevent sound or vibration transmission to the building structure.

[Image Description: Figure 2-1 shows a diagram of a typical outdoor unit installation with clearance requirements. It indicates minimum clearances for unrestricted airflow above the unit (60 inches), to shrubbery (12 inches), and to walls (24 inches).]

2.2 Location Restrictions

• Ensure the top discharge area is unrestricted for at least 60 inches above the unit.
• Do not locate outdoor unit near bedrooms since normal operational sounds may be objectionable.
• Position unit to allow adequate space for unobstructed airflow, wiring, refrigerant lines, and serviceability.
• Maintain a distance of 24 inches between units.
• 24 inches clearance must be provided in front of the control box (access panels) and any other side requiring service.
• Position unit where water, snow or ice from roof or overhang cannot fall directly on unit.
• Position the outdoor unit a minimum of 12" from any wall or surrounding shrubbery to ensure adequate airflow.

See Figure 2-2 and Figure 2-3.

[Image Description: Figure 2-2 illustrates recommended clearances for an outdoor unit, showing a minimum of 60 inches of unrestricted space above, 12 inches to shrubbery, and 24 inches to a wall or access panel.]

[Image Description: Figure 2-3 shows a top-down view of unit placement, indicating minimum clearances to shrubbery (12 inches) and a wall (12 inches), with an access panel requiring 24 inches of clearance.]

3 UNIT PREPARATION

3.1 Preinstallation

STEP 1 - Check for damage and report promptly to the carrier any damage found to the unit (Figure 3-1).

[Image Description: Figure 3-1 shows an outdoor unit with a large 'X' marked on it, indicating potential damage.]

STEP 2 - Instruments must be designed to install/serve R410A equipments.

• Gauge sets, hoses, refrigerant containers, and recovery system must be designed to handle the POE type oils.
• Manifold sets should be 800 PSIG high side and 250 PSIG low side.
• All hoses must have a 700 PSIG service pressure rating.
• Leak detectors should be designed to detect R410A.
• Recovery equipments (including refrigerant recovery containers) must be specifically designed to handle R410A.
• Do not use a R22 TXV.

4 SETTING UP THE UNIT

4.1 Pad Installation

When installing the unit on a support pad, such as a concrete slab, consider the following:

• The pad must be at least 1-2" larger than the unit on all sides.
• The pad must be separate from any structure.
• The pad must be level.
• The pad must be high enough above grade to allow for drainage.
• The pad location must comply with National, State and Local codes.

[NOTE] These instructions are intended to provide a method to tie-down system to concrete slab as a securing procedure for high wind areas. Check Local Codes for tie-down methods and protocols.

[Image Description: Figure 4-1 shows a unit being placed on a pad. It references Section 2.1 for unit dimensions.]

[Image Description: Figure 4-2 illustrates a method for securing the unit to a concrete pad using field-supplied brackets and self-tapping screws. Detail A shows the bracket and screw placement.]

5 REFRIGERANT LINE CONSIDERATIONS

5.1 Service Valve Connection Sizes

[Image Description: Figure 5-1 shows a diagram of the outdoor unit's service valves, indicating the suction line connection, liquid line connection, and the service port for the low pressure access valve.]

5.2 Refrigerant Line Sizes

[NOTE] Using suction line larger than shown in chart will result in poor oil return and is not recommended. For example: the system capacity published in AHRI is 17800 Btu/h. This data is based on the AHRI test condition and 25 feet line set with standard suction tube size (3/4" tube). If you need to add the line set more than 25 feet or use the optional suction tube size, you need to recalculate the capacity with the coefficient in the table. For 50 feet line and 5/8" suction tube, the capacity will be 17800*0.97=17266 Btu/h.

5.3 Refrigerant Piping Limits and Required Refrigerant Line Length

Determine required line length and lift. You will need this later in Section 14.

Total Line Length = ______ Feet.

Total vertical Change (Lift) = ______ Feet.

[Image Description: Figure 5-2 shows a diagram illustrating line length and vertical lift, with labels for total equivalent length and maximum vertical length.]

5.4 Refrigerant Line Insulation

[NOTE] The suction line must always be insulated. DO NOT allow the Liquid Line and Suction Line to come in direct (metal to metal) contact.

[Image Description: Figure 5-3 shows diagrams of insulated liquid and suction lines, with a note about using tape and sheet metal hangers.]

6 REFRIGERANT LINE ROUTING

6.1 Precautions

[NOTE] Take precautions to prevent noise within the building structure due to vibration transmission from the refrigerant lines. For example:

• When the refrigerant lines have to be fastened to floor joists or other framing in a structure, use isolation type hangers.
• Isolation hangers should also be used when refrigerant lines are run in stud spaces or enclosed ceilings.
• Where the refrigerant lines run through a wall or sill, they should be insulated and isolated.
• Isolate the lines from all ductwork.
• Minimize the number of 90° turns.
• Use PVC piping as a conduit for all underground installations as shown in Figure 6-4. Buried lines should be keep as short as possible.
• The lines should not obstruct service access to the coil, air handling system or filter.
• Care must also be taken to isolate the refrigerant lines to minimize noise transmission from the equipment to the structure.
• Comply with National, State, and Local codes when isolating linesets from joists, rafters, walls, or other structural elements.

[Image Description: Figure 6-1 shows how to secure refrigerant lines to joists/rafters using isolators every 8 feet, and securing the liquid line to the suction line.]

[Image Description: Figure 6-2 shows how to secure refrigerant lines to walls using isolators every 8 feet, and securing the liquid line to the suction line.]

[Image Description: Figure 6-3 illustrates isolation through a wall, showing sealant, insulation, and the line set. It also shows a prohibition symbol over hanging line sets from ductwork.]

[Image Description: Figure 6-4 shows a diagram of refrigerant lines routed through PVC conduit underground, connecting the indoor coil to the outdoor unit, with insulated suction and liquid lines.]

7 REFRIGERANT LINE BRAZING

7.1 Braze The Refrigerant Lines

1. Remove caps or plugs. Use a deburing tool to debur the pipe ends. Clean both internal and external surfaces of the tubing using an emery cloth.
2. Remove the pressure tap cap from both service valves.
3. Purge the refrigerant lines and indoor coil with dry nitrogen.
4. Wrap a wet rag around the valve body to avoid heat damage and continue the dry nitrogen purge (Figure 7-4). Braze the refrigerant lines to the service valves. Check liquid line filter drier's directional flow arrow to confirm correct direction of refrigeration flow (away from outdoor unit and toward evaporator coil) as illustrated. Brazing the filter drier to the Liquid Line. Continue the dry nitrogen purge. Do not remove the wet rag until all brazing is completed.
5. [NOTE] Remove the wet rag before stopping the dry nitrogen purge.
6. Replace the pressure tap caps after the service valves have cooled.
7. [NOTE] Do not over tighten (between 40 and 60 inch-lbs. maximum).

[Image Description: Figures 7-1 through 7-5 illustrate the steps for brazing refrigerant lines, including preparing the pipes, purging with nitrogen, using a wet rag for protection, and replacing caps.]

8 REFRIGERANT LINE LEAK CHECK

8.1 Check For Leaks

1. Pressurize the refrigerant lines and evaporator coil to 150 PSIG using dry nitrogen.
2. Check for leaks by using a soapy solution or bubbles at each brazed location.
3. Remove nitrogen pressure and repair any leaks before continuing.

[Image Description: Figure 8-1 shows a pressure gauge reading 150 PSIG.]

[Image Description: Figure 8-2 shows a diagram of refrigerant lines with a soapy solution being applied to check for leaks.]

9 EVACUATION

9.1 Evacuate the Refrigerant Lines and Indoor Coil

[NOTE] Do not open the service valves until the refrigerant lines and indoor coil leak check and evacuation are complete.

1. Evacuate until the micron gauge reads no higher than 350 microns, then close off the valve to the vacuum pump.
2. Observe the micron gauge. Evacuation is complete if the micron gauge does not rise above 500 microns in one (1) minute.

Once evacuation is complete, blank off the vacuum pump and micron gauge, and close the valves on the manifold gauge set.

[Image Description: Figure 9-1 shows a digital micron gauge displaying "0350 Microns".]

[Image Description: Figure 9-2 shows a vacuum pump with a timer indicating "1 MIN."]

10 SERVICE VALVES

10.1 Open the Service Valves

[WARNING] Extreme caution should be exercised when opening the Liquid Line Service Valve. Turn counterclockwise until the valve stem just touches the rolled edge. No torque is required. Failure to follow this warning will result in abrupt release of system charge and may result in personal injury and/or property damage.

[NOTE] Leak check and evacuation must be completed before opening the service valves.

1. Remove Service Valve Cap (Figure 10-1).
2. Fully insert hex wrench into the stem and back out counterclockwise until valve stem just touches the rolled edge.
3. Replace the valve stem cap to prevent leaks. Tighten finger tight plus an additional 1/6 turn.

[Image Description: Figure 10-1 shows the components of a service valve, including the cap, stem, rolled edge, service port, and the hex wrenches used for the suction and liquid service valves.]

11 ELECTRICAL - LOW VOLTAGE

11.1 Low Voltage Maximum Wire Length

11.2 Low Voltage Hook-up Diagrams

[Image Description: Figure 11-1 shows an outdoor unit and an air handler, illustrating power wiring, control wiring, and low voltage connections. It notes that low voltage connections must be made inside the outdoor unit case.]

[Image Description: Figure 11-2 provides control wiring diagrams for 18K-60K HP Systems, showing connections between thermostats (Support 2H and 3H) and the indoor/outdoor units. It explains the function of W, W1, W2, Y, G, R, C, B terminals.]

[Image Description: Figure 11-3 provides control wiring diagrams for 61K HP Systems, showing connections between thermostats (Support 3H and 4H) and the indoor/outdoor units. It explains the function of Y1, Y2, W, W1, W2, G, R, C, O/B terminals.]

[WARNING] Low Voltage line must be connected inside the outdoor unit case through control wiring channel on the right. High Voltage line must be connected through power wiring channel on the left. Mixed channel may result in personal injury.

1. During installation or maintenance, the tie of rubber ring on the electric control box shall not be cut with scissors. It can be untied by pressing the loose buckle. The tightening belt can be reused.

[Image Description: Two diagrams show incorrect (cut tie) and correct (untied buckle) methods for accessing the electric control box.]

12 ELECTRICAL - HIGH VOLTAGE

12.1 High Voltage Power Supply

[WARNING] LIVE ELECTRICAL COMPONENTS! During installation, testing, servicing, and trouble shooting of this product, it may be necessary to work with live electrical components. Failure to follow all electrical safety precautions when exposed to live electrical components could result in death or serious injury.

The high voltage power supply must agree with the equipment nameplate.

Power wiring must comply with National, State and Local Codes.

Follow instructions on unit wiring diagram located on the inside of the access panel.

[Image Description: Figure 12-1 shows the outdoor unit with a label indicating the location of the nameplate.]

12.2 High Voltage Disconnect Switch

Install a separate disconnect switch at the outdoor unit.

Field provided flexible electrical conduit must be used for high voltage wiring.

[Image Description: Figure 12-2 shows the outdoor unit with a disconnect switch installed and conduit for high voltage wiring.]

12.3 High Voltage Ground

Ground the outdoor unit per National, State and Local Code requirements.

[Image Description: Figure 12-3 shows the outdoor unit with a grounding symbol indicating the grounding point.]

13 START UP

13.1 System Start Up

1. Ensure Sections 7, 8, 9, 10, 11, and 12 have been completed.
2. Set System Thermostat to OFF.
3. Turn on disconnect to apply power to the indoor and outdoor units.
4. Wait one (1) hour before starting the unit if compressor crankcase heater is used and the outdoor ambient temperature is below 70 °F.
5. Set system thermostat to ON.

[Image Description: Figure 13-1 shows a thermostat set to OFF.]

[Image Description: Figure 13-2 shows a disconnect switch being turned ON.]

[Image Description: Figure 13-3 shows a timer indicating "60 MIN."]

[Image Description: Figure 13-4 shows a thermostat set to ON, with various modes like COOL, HEAT, AUTO, and fan settings.]

[NOTE] The only mode approved for validating system charge is while in Cooling Mode. Outdoor temperature must be between 55°F and 115°F with Indoor Temperature kept between 70°F and 80°F.

14 SYSTEM CHARGE ADJUSTMENT

14.1 Charging: Weigh-In Method

Weigh-In method can be used for the initial installation, or anytime a system charge is being replaced. Weigh-In Method can also be used when power is not available to the equipment site or operating conditions (indoor/outdoor temperatures) are not in range to verify with the suction line pressure charging method.

[NOTE] The factory charge in the outdoor unit is sufficient for 15 feet of standard size interconnecting liquid line.

New Installations - Calculating additional charge for lineset greater than 15 feet.

1. Total Line Length (ft) = ______ (a)
2. Standard Lineset (ft) = 15 (b)
3. (a) minus (b) = ______ (c)
4. Refrigerant Multiplier = ______ (d)
5. Refrigerant Adder (c*d) = ______ (e)*

*If lineset is less than 15 feet, (e) = 0

Sealed-System Repairs - Calculating total system charge.

1. Total Line Length (ft) = ______ (a)
2. Standard Lineset (ft) = 15 (b)
3. (a) minus (b) = ______ (c)
4. Refrigerant Multiplier = ______ (d)
5. Refrigerant Adder (c*d) = ______ (e)*
6. Factory Charge (nameplate) = ______ (f)
7. Total System Charge (e+f) = ______

*If lineset is less than 15 feet, (e) = 0

14.2 Suction Line Pressure Charging And Refrigerant Adjustment In Cooling (above 55°F outdoor temp.)

1. Check the outdoor ambient temperatures.

Suction line pressure (in cooling mode) is the only recommended method of charging above 55°F outdoor ambient temperatures.

For outdoor ambient temperatures below 55°F, use weigh-in charge method.

[NOTE] It is important to return in the spring or summer to accurately charge the system in the cooling mode when outdoor ambient temperature is above 55°F.

[Image Description: Figure 14-1 shows temperature ranges for outdoor conditions, indicating that above 55°F is suitable for suction line pressure charging, while below 55°F requires weigh-in. It shows 115°F and 55°F marks.]

[Image Description: Figure 14-2 shows temperature ranges for indoor conditions, recommending 70°F to 80°F for best results.]

2. Ensure Sections 7, 8, 9, 10,11,12 and 13 have been completed.

3. Stabilize the system by operating for a minimum of 20 minutes.

[NOTE] At startup, or whenever charge is removed or added, the system must be operated for a minimum of 20 minutes to stabilize before accurate measurements can be made.

[Image Description: Figure 14-3 shows a timer indicating "20 MIN."]

Measured Suction Line Pressure = ______ PSIG

Outdoor Ambient Temperature = ______ °F

Indoor Ambient Temperature = ______ °F

Calculate Liquid Line Pressure = ______ PSIG

Measured Suction Line Temperature = ______ °F

[Image Description: Figure 14-4 shows a diagram of the outdoor unit with an arrow pointing to the suction line, indicating where insulation should be applied.]

15 SYSTEM OPERATION AND TROUBLESHOOTING

15.1 Compressor Crankcase Heater (CCH)

The crankcase heating start must meet two conditions:

A. Outdoor temperature < 37.4°F

B. At power up or if the compressor has been off for more than 3 hours

The crankcase heating stop must meet the following condition:

Outdoor temperature >44.6°F or compressor starts.

15.2 Reversing Valve

Reversing valve energizes at the heating conditions, and cuts off at the cooling condition.

15.3 Protection Function

Reversing valve energizes at the heating conditions, and cuts off at the cooling condition.

• T3 = Outdoor Coil Temperature
• T3>143.6°F, compressor stops working
• T3 < 125.6°F, compressor restarts working
• T4 = Ambient Temperature
• T4 < 5°F, compressor can't start
• T4 > 10.4°F, compressor restarts working
• If 32°F ≤ T4 ≤ 120°F, unit can operate in cooling
• If 5°F ≤ T4 ≤ 75°F, unit can operate in heating

[NOTE] When T4< 5°F, the outdoor unit would provide a signal to drive up the heater installed in the indoor unit.

[NOTE] Discharge temperature protection: Discharge temperature > 239°F, compressor stops working. Discharge temperature < 167°F, compressor restarts working.

[NOTE] High pressure protection: High pressure > 638 PSIG, compressor and outdoor fan motor stop working. High pressure < 464 PSIG, compressor and outdoor fan motor restart working (3 minutes delay necessary).

[NOTE] Low pressure protection: Low pressure < 21 PSIG, compressor and outdoor fan motor stop working. Low pressure > 44 PSIG, compressor and outdoor fan motor restart working (3 minutes delay necessary).

[NOTE] In stand-by status, the compressor will not start in low pressure protection. Within 30 minutes, if 4 protection cycles occur. The system will be locked. It will be restore after power cycle.

15.4 Defrost Mode

Manual defrost mode

When the switch SW3-1 is set to "ON", the system turns to the defrost mode. The defrost mode exits by the logic of shut-down conditions of defrost mode.

[NOTE] Once the manual defrost mode is finished, please turn the switch SW3-1 back to "off".

Start-up conditions of defrost mode

When SW3-3 switch is set to "ON" (Figure 15-1), the mode will start up in any of the following conditions:

• Compressor operates and T3 < 32°F for a period of 30 minutes.
• T3 < 28.4°F and compressor operates for the first time after connected to the power source.
• When T3 < 28.4°F and the system is on standby for two hours continuously.

When SW3-3 switch is set to "OFF" (Figure 14-6), the mode will start up in any of the following conditions:

• Compressor operates and T3 < 32 °F for a period of 60 minutes.
• T3 < 28.4 °F and compressor operates for the first time after connected to the power source.
• When T3 < 28.4 °F and the system is on standby for two hours.

Shut-down conditions of defrost mode:

The mode will shut down in any of the following conditions:

• The defrosted time lasts 10 minute.
• T3 ≥ 64.4°F and T4 ≥ 28.4°F.
• Compressor stops operating.
• T3 ≥ 64.4°F lasts 60 seconds when T4 < 28.4°F.

[Image Description: Figure 15-1 shows the location of the SW3 switch on a circuit board.]

15.5 Two-stage Compressor (61K HP only)

The 61K HP Systems feature a Two-stage scroll compressor which is controlled by Y1 and Y2.

• Y1: 24VAC thermostat input for first stage operation of the unit.
• Y2: 24VAC thermostat input/output for second stage operation of the unit.

If the control receives a call for second-stage compressor operation Y2 in heating or cooling mode and the first-stage compressor output is active, the second-stage compressor solenoid output will be energized by the unit control system operation function.

The unit control de-energizes the second-stage compressor solenoid output immediately when the Y2 signal is removed or the first-stage compressor output is de-energized for any reason.

15.6 Temperature Sensor Resistance Table

This table provides resistance values (KΩ) for various temperatures (°F) for temperature sensors.

15.7 Electrical Data Table

15.8 Troubleshooting Table

This table lists system faults and their primary and secondary causes, categorized by Refrigerant Circuit, Electrical, and Defrost.

C-Cooling H-Heating P- Primary Causes S-Secondary Causes

15.9 Fault Code Table

15.9.1 For 18K-60K HP System

16 WARRANTY

Assist owner with processing Warranty cards and/or online registration.

16.1 Maintenance

Dirt should not be allowed to accumulate on the indoor or outdoor coils or other parts in the air circuit. Clean as often as necessary to keep the unit clean. Use a brush, vacuum cleaner attachment or other suitable means.

The outdoor fan motor is permanently lubricated and does not require periodic oiling.

Refer to the furnace or air handler instructions for filter and blower motor maintenance.

The indoor coil and drain pan should be inspected and cleaned regularly to assure proper drainage.

[NOTE] It is unlawful to knowingly vent, release or discharge refrigerant into the open air during repair, service, maintenance or the final disposal of this unit. When the system is functioning properly and the owner has been fully instructed, secure the owner's approval.

16.2 Removing and Installing The Cover Plate

1. Before removing the cover plate of the electronic control box, please be noted the screws 1-7 must be removed first.
2. When install back the cover plate of the electric control box, please be noted the screws 1 and 3 must be installed at the last step to facilitate assembly and avoid damage the waterproof sponge.

[Image Description: Figure 16-1 shows the outdoor unit's control box cover plate and indicates the location of screws and a waterproof sponge.]

16.3 Changing Motor

When motor requires changing, follow the steps below:

1. Go into electrical panel, disconnect motor power lines.
2. Note: Disconnect main power to unit. Severe burns and electrical shock will occur if you do not disconnect main power.
3. Remove cover (be careful of motor wires).
4. Be sure to place fan cover unit on the ground (Figure 16-2).
5. Note: Do not place or lean fan blades on ground or against surface.
6. Remove fan motor by removing 5/16" nuts from cover.
7. Remove fan blade from motor by removing 1/2" nut and place fan on the ground.
8. Reverse removal process to reinstall the fan and motor.
9. Note: When connecting motor wires be sure to check motor direction.

[NOTE] Damage will occur to condenser unit if you remove 5/16" nuts prior to cover removal.

[Image Description: Figure 16-2 illustrates the fan motor assembly, showing the 1/2" nut for the fan blade and 5/16" nuts for the motor mounting.]

17 MATCHING TABLE AND CHECKOUT PROCEDURES

17.1 Operational and Checkout Procedures

Final phases of this installation are the unit Operational and Checkout Procedures. To obtain proper performance, all units must be operated and charge adjustments made in accordance with procedures found in the Service Facts of the Outdoor Unit.

After installation has been completed, it is recommended that the entire system be checked against the following list:

1. Be sure unit suspension (if used) is secure and that there are no tools or loose debris in or around or on top of the unit. [ ]
2. Properly insulate suction lines and fittings. [ ]
3. Properly secure and isolate all refrigerant lines. [ ]
4. Verify that all electrical connections are tight. [ ]
5. Check all duct outlets; they must be open and unrestricted. [ ]
6. Check drain lines and be sure all joints are tight. [ ]
7. Be sure that a return air filter is installed. [ ]
8. Operate complete system in each mode to verify proper performance. Verify operation of supplementary electric heater. [ ]