Reznor Q6SD-X36 Installation Manual

Q6SD SERIES

USER’S MANUAL / INSTALLATION INSTRUCTIONS

SINGLE PACKAGE HEAT PUMP - 3 PHASE - R-410A

13 SEER

Premium Model Shown

IMPORTANT

Please read this information thoroughly and become familiar with the capabilities and use of your appliance before attempting to operate or maintain this unit. Keep this literature where you have easy access to it in the future. If a problem occurs, check the instructions and follow recommendations given. If these suggestions don’t eliminate your problem, call your servicing contractor.

These instructions are primarily intended to assist qualiﬁ ed individuals experienced in the proper installation of this appliance. Some local codes require licensed installation/ service personnel for this type of equipment. Please read all instructions carefully before starting the installation.

DO NOT DESTROY. PLEASE READ CAREFULLY AND KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.

USER INFORMATION

IMPORTANT SAFETY INFORMATION .......................4

ABOUT THE HEAT PUMP ...........................................4

OPERATING INSTRUCTIONS .....................................4

Cooling Operation .....................................................4

Heating Operation .....................................................4

Emergency Heat........................................................4

Defrost Operation ......................................................4

Operating the Heat Pump for Automatic

Cooling and Heating ..................................................5

INSTALLER INFORMATION

IMPORTANT SAFETY INFORMATION .......................6

GENERAL INFORMATION ..........................................7

Before You Install this Unit .........................................7

Locating the Heat Pump ............................................7

Field Connections for Electrical Power

Supply .......................................................................7

Air Ducts ...................................................................7

Unconditioned Spaces ...........................................7

Acoustical Duct Work .............................................7

Air Filter Requirements .............................................8

HEAT PUMP INSTALLATION ......................................8

Packaging Removal ...................................................8

Rigging & Hoisting .....................................................8

Minimum Clearance Requirements ...........................8

Ground Level .............................................................8

Rooftop ......................................................................9

Removal of Internal Filter Rack .................................9

Installing Filters in the Filter Rack .............................9

Removing Filters from the Filter Rack .......................9

Horizontal to Downﬂ ow Conversion ...........................9

Condensate Drain ....................................................9

ELECTRICAL WIRING ...............................................10

Pre - Electrical Checklist .........................................10

Line Voltage .............................................................10

Unbalanced 3-Phase Supply Voltage ......................11

Grounding................................................................11

Blower Speed ..........................................................11

Defrost Cycle Timer .................................................11

Defrost Control Board - 624556 ..............................12

Operational Information........................................12

Normal Defrost Procedure ...................................12

Defrost Test Procedure ........................................12

Optional Outdoor Thermostat ..................................12

Optional Electric Heater Kits ...................................12

Thermostat Connections .........................................12

Operating Indoor Blower Continuously ......................5

Shutting the Heat Pump Off ......................................5

HEAT PUMP MAINTENANCE .....................................5

Regular Cleaning.......................................................5

Before You Call a Technician .....................................5

TROUBLESHOOTING .................................................5

WARRANTY INFORMATION .......................................5

STARTUP & ADJUSTMENTS ................................... 13

Pre - Start Checklist ................................................13

Start-up Procedure .................................................. 13

Air Circulation ....................................................... 13

Short Cycle Protection ......................................... 13

System Cooling .................................................... 13

System Heating .................................................... 13

Refrigerant Charging ............................................... 13

Charging an R-410A Unit in AC Mode ....................14

Charging an R-410A Unit in Heating Mode ............. 14

HEAT PUMP MAINTENANCE ...................................14

REPLACEMENT PARTS ............................................ 14

FIGURES & TABLES .................................................15

Figure 7. Q6SD Heat Pump Dimensions.............. 15

Table 4. Center of Gravity & Shipping Weights ..... 15

Electrical Information ............................................... 16

Figure 8. T-Stat Connections 208/230V ................ 16

Figure 9. T-Stat Connections 460V ....................... 17

Figure 10. Wiring Diagram - 208/230V ................. 18

Figure 11. Wiring Diagram - 460V ........................ 19

Cooling Charging Charts ......................................... 20

Figure 12. Charging Chart for 3 Ton Units ............ 20

Figure 13. Charging Chart for 4 Ton Units ............ 20

Figure 14. Charging Chart for 5 Ton Units ............ 21

Q6SD Series Airﬂ ow Data ....................................... 21

Table 5. Blower Curves ........................................ 21

USER INFORMATION

IMPORTANT SAFETY INFORMATION

Safety markings are used frequently throughout this manual to designate a degree or level of seriousness and should not be ignored. WARNING indicates a potentially hazardous situation that if not avoided, could result in personal injury or death. CAUTION indicates a potentially hazardous situation that if not avoided, may result in minor or moderate injury or property damage.

ABOUT THE HEAT PUMP

Your heat pump is a unique, all weather comfort-control appliance that will heat and cool your home year round and provide energy saving comfort. It’s an unknown fact that heat is always in the air, even when the outside temperature is below freezing. The heat pump uses this basic law of physics to provide energy saving heat during the winter months. For example, If the outdoor temperature is 47° F (8° C), your heat pump can deliver approximately

3.5 units of heat energy per each unit of electrical energy used, as compared to a maximum of only 1 unit of heat energy produced with conventional heating systems.

In colder temperatures, the heat pump performs like an air conditioner run in reverse. Available heat energy outside the home is absorbed by the refrigerant and exhausted inside the home. This efﬁ cient process means you only pay for “moving” the heat from the outdoors to the indoor area. You do not pay to generate the heat, as is the case with more traditional furnace designs.

During summer, the heat pump reverses the ﬂ ow of the heat-absorbing refrigerant to become an energy-efﬁ cient, central air conditioner. Excess heat energy inside the home is absorbed by the refrigerant and exhausted outside the home.

OPERATING INSTRUCTIONS

Please refer to the thermostat manufacturer’s User manual for detailed programming instructions.

Cooling Operation

1. Set the thermostat’s system mode to COOL or AUTO

and change the fan mode to AUTO. See Figure 1.

2. Set the temperature selector to the desired

temperature level. The outdoor fan, compressor, and blower motor will all cycle on and off to maintain the indoor temperature at the desired cooling level.

NOTE: If the temperature level is re-adjusted, or the system mode is reset, the fan and compressor in the outdoor unit may not start immediately. A protective timer circuit holds the compressor and the outdoor fan off for approximately three minutes following a previous operation or the interruption of the main electrical power.

Heating Operation

1. Set the thermostat’s system mode to HEAT or AUTO

and change the fan mode to AUTO. See Figure 1.

2. Set the temperature selector to the desired

temperature level. The compressor, outdoor fan, and blower motor will cycle on and off to maintain the indoor temperature at the desired heating level.

Emergency Heat

Some thermostats may include a system mode called EM HT or AUX HT, etc. This is a back-up heating mode that should only be used if a problem is suspected. With the mode set to EM HT, etc., the compressor and outdoor fan will be locked off and supplemental heat (electric resistance heating) will be used as a source of heat. Sustained use of electric resistance heat in place of the heat pump will result in an increase in electric utility costs.

Defrost Operation

During cold weather heating operation, the outdoor unit

Fan

Mode

Figure 1. Digital Thermostat

System

Mode

Temperature

Selector

will develop a coating of snow and ice on the heat transfer coil. This is normal and the unit will defrost itself. This unit features Demand Defrost that monitors ambient and coil temperatures to regulate the defrost function accordingly.

USER INFORMATION

At the beginning of the defrost cycle, both the outdoor condenser fan and compressor will turn off. After approximately 30 seconds, the compressor will turn on and begin to heat the outdoor coil causing the ice and snow to melt.

NOTE: While the ice and snow is melting, some steam may rise from the outdoor unit as the warm coil causes the melting frost to evaporate. When defrost is completed, the outdoor fan motor will start, and the compressor will turn off again. In approximately 30 seconds the compressor will start up again and continue normal operation.

Operating the Heat Pump for Automatic Cooling and Heating

1. Set the thermostat system mode to AUTO and the thermostat fan mode to AUTO. See Figure 1.

NOTE: Thermostat styles vary. Some models will not include the AUTO mode and others will have the AUTO in place of the HEAT and COOL. Others may include all three. Refer to the instructions supplied with your thermostat for speciﬁ c instructions.

2. Set the thermostat's temperature selector to the desired heating and cooling temperature level(s). The outdoor unit and the indoor blower will then cycle on and off in either the heating or cooling mode of operation as required to automatically maintain the indoor temperature within the desired limits.

Operating the Indoor Blower Continuously

The continuous indoor blower operation is typically used to circulate the indoor air to equalize a temperature unbalance due to a sun load, cooking, or ﬁ replace operation.

Set the thermostat fan mode to ON (Figure 1). The indoor blower starts immediately, and will run continually until the fan mode is reset to AUTO.

The continuous indoor blower operation can be obtained with the thermostat system mode set in any position, including OFF.

Shutting the Heat Pump Off

Change the thermostat’s system mode to OFF and the fan mode to AUTO. See Figure 1. NOTE: The system will not operate, regardless of the temperature selector setting.

HEAT PUMP MAINTENANCE

CAUTION:

Shut off all electrical power to the unit before performing any maintenance or service on the system. Failure to comply may result in personal injury or death.

Proper maintenance is most important to achieve the best performance from the appliance and should be performed by a qualiﬁ ed service technician at least once a year. Follow the maintenance schedule and the instructions below for years of safe, trouble free operation.

Regular Cleaning

• Clean or replace the indoor air ﬁ lter at the start of each

heating and cooling season, and when an accumulation of dust and dirt is visible on the air ﬁ lter.

• Remove any leaves and grass clippings from the coil in the outdoor unit, being careful not to damage the aluminum ﬁ ns.

• Check for obstructions, such as twigs, sticks, etc.

TROUBLESHOOTING

If the unit fails to operate, check the following:

• The thermostat is properly set. See Cooling Operation for air conditioning or Heating Operation for furnace or air handler.

• The unit disconnect fuses are in good condition and the electrical power to the unit is turned on.

WARRANTY INFORMATION

A warranty certiﬁ cate with full details is included with the heat pump. Carefully review these responsibilities with your dealer or service company. The manufacturer will not be responsible for any costs found necessary to correct problems due to improper setup, improper installation, adjustments, improper operating procedure on the part of the user, etc. Some speciﬁ c examples of service calls which are not included in the limited warranty are:

• Correcting wiring problems in the electrical circuit

supplying the heat pump.

• Resetting circuit breakers or other switches.

• Adjusting or calibrating of thermostat.

INSTALLER INFORMATION

IMPORTANT SAFETY INFORMATION

Please read all instructions before servicing this equipment. Pay attention to all safety warnings and any other special notes highlighted in the manual. Safety markings are used frequently throughout this manual to designate a degree or level of seriousness and should not be ignored. WARNING indicates a potentially hazardous situation that if not avoided, could result in personal injury or death. CAUTION indicates a potentially hazardous situation that if not avoided, may result in minor or moderate injury or property damage.

WARNING:

Unless noted otherwise in these instructions, only factory authorized parts or accessory kits may be used with this product. Improper installation, service, adjustment, or maintenance may cause explosion, ﬁ re, electrical shock or other hazardous conditions which may result in personal injury or property damage

WARNING:

Shut off all electrical power to the unit before performing any maintenance or service on the system. Failure to comply may result in personal injury or death.

WARNING:

Improper installation, service, adjustment, or maintenance may cause explosion, ﬁ re, electrical shock or other hazardous conditions which may result in personal injury or property damage. Unless otherwise noted in these instructions, only factory authorized kits or accessories may be used with this product.

WARNING:

Q6SD units are fully charged with R-410A refrigerant and ready for installation. When

a system is installed according to these instructions, no refrigerant charging is required. If repairs make it necessary for evacuation and charging, it should only be attempted by qualiﬁ ed, trained personnel thoroughly familiar with this equipment. Some local codes require licensed installation service personnel to service this type of equipment. Under no circumstances should the homeowner attempt to install and/or service this equipment. Failure to comply with this warning could result in equipment damage, personal injury, or death.

WARNING:

The safety information listed below must be followed during the installation, service, and operation of this unit. Unqualiﬁ ed individuals should not attempt to interpret these instructions or install this equipment. Failure to follow safety recommendations could result in possible damage to the equipment, serious per

injury or death

• The installer must comply with all local codes and regulations which govern the installation of this type of equipment. Local codes and regulations take precedence over any recommendations contained in these instructions. Consult local building codes and the National Electrical Code (ANSI CI) for special installation requirements.

• This equipment contains liquid and gaseous refrigerant under high pressure. Installation or servicing should only be performed by qualiﬁ ed trained personnel thoroughly familiar with this type equipment.

• All electrical wiring must be completed in accordance with local, state and national codes and regulations and with the National Electric Code (ANSI/NFPA 70) or in Canada the Canadian Electric Code Part 1 CSA C.22.1.

• Install this unit only in a location and position as speciﬁ ed on page 7. This unit is designed only for outdoor installations and should be located with consideration of minimizing the length of the supply and return ducts. Consideration should also be given to the accessibility of fuel, electric power, service access, noise, and shade.

• Follow all precautions in the literature, on tags, and on labels provided with the equipment. Read and thoroughly understand the instructions provided with the equipment prior to performing the installation and operational checkout of the equipment..

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GENERAL INFORMATION

The Q6SD series heat pump is designed only for outdoor rooftop or ground level installations. This unit has been tested for capacity and efﬁ ciency in accordance with A.R.I. Standards and will provide many years of safe and dependable comfort, providing it is properly installed and maintained. Abuse, improper use, and/or improper maintenance can shorten the life of the appliance and create unsafe hazards.

Before you install this unit

 The cooling load of the area to be conditioned must be

calculated and a system of the proper capacity selected. It is recommended that the area to be conditioned be completely insulated and vapor sealed.

 Check the electrical supply and verify the power supply

is adequate for unit operation. If there is any question concerning the power supply, contact the local power company.

 All units are securely packed at the time of shipment and

upon arrival should be carefully inspected for damage prior to installing the equipment at the job site. Verify coil ﬁ ns are straight. If necessary, comb ﬁ ns to remove ﬂ attened or bent ﬁ ns. Claims for damage (apparent or concealed) should be ﬁ led immediately with the carrier.

 Please consult your dealer for maintenance information

and availability of maintenance contracts. Please read all instructions before installing the unit.

Locating the Heat Pump

• Survey the job site to determine the best location for mounting the outdoor unit.

• Choose an appropriate location that minimizes the length of the supply and return air ducts.

• Overhead obstructions, poorly ventilated areas, and areas subject to accumulation of debris should be avoided.

• Sufﬁ cient clearance for unobstructed airﬂ ow through the outdoor coil must be maintained in order to achieve rated performance. See Figure 2 for minimum clearances to obstructions.

Field Connections for Electrical Power Supply

• All wiring must comply with current provisions of the National Electrical Code (ANSI/NFPA 70) and with applicable local codes having jurisdiction.

• The minimum size of electrical conductors and circuit protection must be in compliance with information listed on the outdoor unit data label.

• Electrical power supplied to the unit must be adequate for proper operation of the equipment. The system must be wired and provided with circuit protection in accordance with local building codes.

Air Ducts

This unit is designed only for use with a supply and return duct. Air ducts must be installed in accordance with the standards of the National Fire Protection Association Standard for Installation of Air Conditioning Systems

36” For Coil Only

36"

Clearances to Obstructions

36"

TO BE

TOP OF UNIT

UNOBSTRUCTED

Minimum Required

Figure 2. Clearance Requirements

(NFPA 90A), Standard for Installation of Residence Type Warm Air Heating and Air Conditioning Systems (NFPA 90B), and all applicable local codes. NFPA publications are avaialable by writing to: National Fire Protection Association, Batterymarch Park, Quincy, ME 02269 or visit www.NFPA.org on the web.

• Design the duct work according to methods described by the Air Conditioning Contractors of America (ACCA).

• The ducts must be properly sized not to exceed .2” W.C. pressure drop at 400 scfm per nominal ton of cooling capacity.

• Duct work should be attached directly to the unit ﬂ anges for horizontal applications.

• If roof curb is installed, the ducts must be attached to the curb hangers, not the unit.

Unconditioned Spaces All duct work passing through unconditioned space must be properly insulated to minimize duct losses and prevent condensation. Use insulation with an outer vapor barrier. Refer to local codes for insulation material requirements.

Acoustical Duct Work Certain installations may require the use of acoustical lining inside the supply duct work.

• Acoustical insulation must be in accordance with the current revision of the Sheet Metal and Air Conditioning Contractors National Association (SMACNA) application standard for duct liners.

• Duct lining must be UL classiﬁ ed batts or blankets with a ﬁ re hazard classiﬁ cation of FHC-25/50 or less.

• Fiber duct work may be used in place of internal duct liners if the ﬁ ber duct work is in accordance with the current revision of the SMACNA construction standard on ﬁ brous glass ducts. Fibrous duct work and internal acoustical lining must be NFPA Class 1 air ducts when tested per UL Standard 181 for Class 1 ducts.

Air Filter Requirements

WARNING:

Never operate the unit without a ﬁ lter in place. Dust and lint could accumulate on internal parts, resulting in loss of efﬁ ciency, equipment damage and possible ﬁ re. Replace disposable ﬁ lters with the same type and size.

• Air ﬁ lter(s) are not supplied and must be installed in the return air system by the installer.Only three phase units are equipped with an internal ﬁ lter rack assembly.

• All return air must pass through the ﬁ lters before entering the unit. Recommended ﬁ lter sizes are listed in Table 1. NOTE: It is important that all ﬁ lters be kept clean and replaced frequently to ensure proper operation of unit. Dirty or clogged ﬁ lters will reduce the efﬁ ciency of the unit and result in unit shutdowns.

• Air ﬁ lter pressure drop must not exceed 0.08 inches WC. When replacing the air ﬁ lters, a suitable air ﬁ lter must be installed upstream of the evaporator coil of the return air system.

• Downflow Installations require an internal filter accessory kit to be installed.

• Horizontal Installations require the air ﬁ lter system be installed in the return air ductwork.

Unit Size Internal Filter Size

Q6SD-X36

Q6SD-X48 / X60

Table 1. Internal Filter Sizes

(2) 16” x 25” x 1”

(2) 16” x 25” x 2” (2) 18” x 25” x 1”

(2) 18” x 25” x 2”

HEAT PUMP INSTALLATION

Packaging Removal

Remove the shipping carton and User’s Manual from the equipment. Take care not to damage the tubing connections when removing the carton. For rooftop installations, remove and discard the two supports attached beneath the unit.

Rigging and Hoisting

WARNING:

To avoid the risk of property damage, personal injury, or death, it is the rigger’s responsibility to ensure that whatever means are used to hoist the unit are safe and adequate:

• The lifting equipment must be adequate for the

load. Refer to Table 4 (page 15) for unit weights.

• The unit must be lifted from the holes in the

base rails using cables or chains.

• Spreader bars are required to protect the unit

and ensure even loading.

• Keep the unit in an upright position at all times.

The rigging must be located outside the units center of gravity. Refer to Figure 7 (page 15) for locating the center of gravity.

• All panels must be securely in place during

rigging and hoisting.

Minimum Clearance Requirements

Q6SD units are certiﬁ ed as combination heating and cooling equipment for outdoor installation only. Figure 2 (page 7) displays the minimum clearances to obstructions for both downﬂ ow and horizontal discharge.

Units may be installed on wood ﬂ ooring or on Class A, B, or C roof covering material when used with bottom supply and return air ducts as long as the following requirements are met:

• If using horizontal supply and return air ducts, the horizontal roof curb kit and return air kit must be installed prior to unit installation. Horizontal roof curb is required.

• If using bottom discharge with return air ducts a roof curb must be installed prior to unit installation. See Rigging and Hoisting section for setting of the unit.

2”

Figure 3. Ground Level Installation

Ground Level

Ground level installations must be located according to local building codes or ordinances and these requirements:

• Clearances must be in accordance with those shown in Figure 2. Also consider clearances for access to the internal ﬁ lter.

• A suitable mounting pad (Figure 3) must be provided and separate from the building foundation. The pad must be level to ensure proper condensate disposal and strong enough to support the unit’s weight. The

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Reznor Q6SD-X36 Installation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual