a important
Contents
1. 5 Electrical ea vei eh 6 Refrigerant Piping 8 Refrigerant Metering Device 10 Manifold Gauge Set 10 Service Valves 11 Leak TeSting oak ere 11 EvactialiOli ae ides aene e treten cepe 12 StartUp ts ota Tac aree Vy ER Pes er 12 Refrigerant Charging 13 System Operation 15 Defrost System 15 Maintenance sieaa ruinaa au nn 16 Optional Accessories 16 Homeowner Information 17 Thermostat Operation 17 Start Up and Performance Check List 18 HP13 Outdoor Units Lennox Elite Series HP13 outdoor units are approved and warranted only for installation with specially matched indoor coils line sets and refrigerant control devices aC designated by Lennox Refer to Lennox engineering handbook for check expansion valve CTXV kits which may need to be ordered separately Shipping and Packing List 1 Assembled HP 13 outdoor unit Check unit for shipping damage Consult last carrier immediately if damage is found 505 076M Unit Dimensions inches mm RUN CAPACITOR DEFROST BOARD 1 SS F OUTDOOR FAN COMPRESSOR VALVE 7 f HIGH PRESSURE SWITCH SUCTION LINE 018 MODEL ONLY2. CONNECTION FILTER DRIER 1 LIQUID LINE VAPOR LINE CONNECTIONS LIQUID LINE VAPOR VALVE AND CONNECTION m GAUGE PORT SUCTION TOP VIEW LINE CONNECTIONS HP13 PARTS ARRANGEMENT DISCHARGE AIR E E LIQUID LINE CONNECTION ELECTRICAL INLETS VAPOR LINE CONNECTION SON 4 114 4 3 4 108 121 SIDE VIEW 1 25 SIDE VIEW UNIT SUPPORT FEET UNIT SUPPORT FEET p 8 1 2 9 1 2 216 241 8 3 4 8 1 4 210 13 1 2 140 343 HP13 018 024 030 AND 036 BASE SECTIONS 27 686 30 1 2 775 30 1 2 775 35 889 35 1 2 902 39 12 1003 16 7 8 429 8 3 4 222 3 1 8 79 30 34 781 4 5 8 117 3 3 4 05 26 7 8 683 13 78 352 7 3 4 197 3 1 4 83 27 1 8 689 3 5 8 92 4 12 114 20 5 8 524 Page 2 505076M 06 07 4 WARNING This product and or the indoor unit it is matched with may contain fiberglass wool Disturbing the insulation during installation main tenance or repair will expose you to fiberglass wool dust Breathing this may cause lung cancer Fiber glass wool is known to the State of California to cause
3. SYSTEM SWITCH Set the system switch for heating cooling or auto operation The auto mode allows the heat pump to automatically switch from heating mode to cooling mode to maintain predetermined comfort settings Many heat pump thermostats are also equipped with an emergency heat mode which locks out heat pump operation and provides temporary heat supplied by the auxiliary heat INDICATING LIGHT Most heat pump thermostats have an amber indicates when the heat pump is operati emergency heat mode TEMPERATURE INDICATOR The temperature indicator displays the actual room light which ng in the PROGRAMMABLE THERMOSTATS Your Lennox system may be controlled by a programmable thermostat These thermostats provide the added feature of programmable time of day setpoints for both heating and cooling Refer to the user s information manual provided with your particular thermostat for operation details PRESERVICE CHECK If your system fails to operate check the following before calling for service Check to see that all electrical disconnect switches are ON Make sure the room thermostat temperature selector is properly set Make sure the room thermostat system switch is properly set Replace any blown fuses or reset circuit breakers Make sure unit access panels are in place Make sure air filter is clean Locate unit model number and have it handy before temperature calling Start Up and Performance Check Li
4. indoor blower reversing valve compressor SOME CONNECTIONS MAY NOT APPLY REFER TO SPECIFIC THERMOSTAT AND INDOOR UNIT Figure 11 Outdoor Unit and Blower Unit Thermostat Designations Thermostat Indoor Unit Outdoor Unit 24V power aN 24V power CN QE EMERGENCY HEAT RELAY emergency heat 9 OUTDOOR a THERMOSTAT P X 1st stage auxiliary heat 1st stage auxiliary heat W y eo indoor blower Siena 2 sor o SOME CONNECTIONS MAY NOT APPLY REFER TO SPECIFIC THERMOSTAT AND INDOOR UNIT Figure 12 Outdoor Unit and Blower Unit Thermostat Designations with Emergency Heat HP13 SERIES Refrigerant Piping Field refrigerant piping consists of liquid and vapor lines from the outdoor unit sweat connections to the indoor coil flare or sweat connections Use Lennox L15 sweat non flare series line sets as shown in table 2 or use field fabricated refrigerant lines Refer to Refrigerant Piping Guide Corp 9351 L9 for proper size type and application of field fabricated lines Field connection sizes are also listed in table 2 Table 2 Refrigerant Line Sets Field Connections Liquid Vapor Liquid Vapor L15 Line Line Line Line Sets L15 41 15 ft 50 ft 4 6 15 m 115 65 15 ft 50 ft 4 6 m 15 m Recommended Line Set
5. Field Fabricated NOTE Units are designed for line sets of up to fifty feet 15 m For applications longer than fifty feet consult the Lennox Refrigerant Piping Guide Corp 9351 L9 Select line set diameters from table 2 to ensure that oil returns to the compressor INSTALLING REFRIGERANT LINE Pay close attention to line set isolation during installation of any heat pump or a c system When properly isolated from building structures walls ceilings floors the refrigerant lines will not create unnecessary vibration and subsequent noises Also consider the following when placing and installing a high efficiency outdoor unit 1 Placement Some localities are adopting sound ordinances based on the unit s noise level observed from the adjacent property not from the installation property Install the unit as far as possible from the property line When possible do not install the unit directly outside a window Glass has a very high level of sound transmission Figure 13 shows how to place the outdoor unit and line set Page 8 505076M 06 07 Install unit away from pd windows Two 90 elbows installed in line set will reduce line set vibration Figure 13 Outside Unit Placement and Installation 2 Line Set Isolation The following illustrations demonstrate procedures which ensure proper refrigerant line set isolation Figure 14 shows how to install line sets on horizontal runs Fig
6. Slightly rotate and guide the lip of top tab inward figure 8 Details A and C then upward into the top slot of the hinge corner post Rotate panel to vertical to fully engage all tabs Holding the panel s hinged side firmly in place close the right hand side of the panel aligning the screw holes When panel is correctly positioned and aligned insert the screws and tighten MAINTAIN MINIMUM PANEL ANGLE AS CLOSE TO PARALLEL WITH THE UNIT AS POSSIBLE WHILE INSTALLING PANEL HOLD DOOR FIRMLY TO THE HINGED SIDE TO MAINTAIN FULLY ENGAGED TABS ANGLE MAY BETOO __ EXTREME Eo PREFERRED ANGLE e FOR INSTALLATION Detail D Figure 10 Removing Installing Louvered Panels Detail D In the U S A wiring must conform with current local codes and the current National Electric Code NEC In Canada wiring must conform with current local codes and the current Canadian Electrical Code CEC Refer to the furnace or blower coil installation instructions for additional wiring application diagrams and refer to unit nameplate for minimum circuit ampacity and maximum overcurrent protection size Page 6 505076M 06 07 1 2 A WARNING Electric Shock Hazard Can cause jury or death Unit must be grounded in accordance with national and local codes Line voltage is present at all compo nents when unit is not in operation on units with single pole contactors Dis connect all remote electri
7. observe the following when restoring power to your heat pump system Set the room thermostat selector to the Emergency Heat setting to obtain temporary heat for a minimum of 6 hours This will allow system refrigerant pressures and temperatures enough time to return to a stabilized condition In Emergency Heat mode all heating demand is satisfied by auxiliary heat heat pump operation is locked out After a six hour warm up period the thermostat can then be switched to the Heat setting and normal heat pump operation may resume Thermostat Operation Though your thermostat may vary somewhat from the description below its operation will be similar TEMPERATURE SETTING LEVERS Most heat pump thermostats have two temperature selector levers one for heating and one for cooling Set the levers or dials to the desired temperature setpoints for both heating and cooling Avoid frequent temperature adjustment turning the unit off and back on before pressures equalize puts stress on the unit compressor Page 17 HP13 SERIES FAN SWITCH in AUTO or INT intermittent mode the blower operates only when the thermostat calls for heating or cooling This mode is generally preferred when humidity control is a priority The ON or CONT mode provides continuous indoor blower operation regardless of whether the compressor or auxiliary heat are operating This mode is required when constant air circulation or filtering is desired
8. REFRIGERANT FLOW NOTE USE GAUGE PORTS ON VAPOR REVERSING VALVE LINE VALVE AND LIQUID VALVE FOR EVACUATING REFRIGERANT LINES AND INDOOR COIL USE VAPOR GAUGE PORT TO MEASURE VAPOR PRESSURE FILTER DRIER OUTDOOR V4 LOW Hugh PRESSURE PRESSURE MUFFLER 1 1 m TO LIQUID HCFC 22 LINE DRUM SERVICE COMPRESSOR DURING CHARGING INDOOR UNIT INDOOR col xX VAPOR ser H VAPOR vice port line valve 5 PORT J CHECK EXPANSION VALVE I 3 lt Figure 18 HP13 Cooling Cycle Showing Gauge Manifold Connections Page 1 505076M 06 07 0 Service Valves The liquid line and vapor line service valves figures 19 and 20 and gauge ports are used for leak testing evacuating charging and checking charge INSERT HEX WRENCH HERE SCHRADER VALVE OPEN TO LINE SET WHEN VALVE IS CLOSED SERVICE PORT CAP VALVE FRONT SEATED Valve in closed position Valve in open position Figure 19 Front Seated Liquid Line Service Valve Each valve is equipped with a service port which has a factory installed Schrader valve A service port cap protects the Schrader valve from contamination and serves as the primary leak seal After accessing opening closing valves be sure to appropriately tighten the components see table 1 on Page3 for torque requirements FRONT SEATED SERVICE VALVE LIQUID LINE The fr
9. that may apply to this unit The following may or may not apply Loss of Charge Kit High Pressure Switch Kit Mild Weather Kit Compressor Monitor Compressor Crankcase Heater Mounting Bases Sound Cover Low Ambient Kit e Monitor Kit Dave Lennox Signature Stat Room Thermostat Homeowner Information In order to ensure peak performance your system must be properly maintained Clogged filters and blocked airflow prevent your unit from operating at its most efficient level 1 Air Filter Ask your Lennox dealer to show you where your indoor unit s filter is located It will be either at the indoor unit installed internal or external to the cabinet or behind a return air grille in the wall or ceiling Check the filter monthly and clean or replace it as needed 2 Disposable Filter Disposable filters should be replaced with a filter of the same type and size NOTE If you are unsure about the filter required for your system call your Lennox dealer for assistance A IMPORTANT Turn off electrical power to the unit at the disconnect switch before performing maintenance The unit may have multiple power supplies 3 Reusable Filter Many indoor units are equipped with reusable foam filters Clean foam filters with a mild soap and water solution rinse thoroughly allow filter to dry completely before returning it to the unit or grille NOTE The filter and all access panels must be in
10. 4 162 31 163 26 170 30 178 32 175 18 177132 These are most popular match up pressures Indoor match up indoor air quality and indoor load cause pressures to vary Temperature of the air entering the outside coil 505076M 06 07 Page 14 System Operation The outdoor unit and indoor blower cycle on demand from the room thermostat When the thermostat blower switch is in the ON position the indoor blower operates continuously FILTER DRIER The unit is equipped with a bi flow filter drier See figure 18 If replacement is necessary order another of like design CRANKCASE HEATER A IMPORTANT If unit is equipped with crankcase heater it should be energized 24 hours before unit start up to pre vent compressor damage as a result of slugging EMERGENCY HEAT FUNCTION ROOM THERMOSTAT An emergency heat function is designed into some room thermostats This feature is applicable when isolation of outdoor unit is required or when auxiliary electric heat is staged by outdoor thermostats When the room thermostat is placed in the emergency heat position the outdoor unit control circuit is isolated from power and field provided relays bypass the outdoor thermostats An amber indicating light simultaneously comes on to remind the homeowner that he is operating in the emergency heat mode Emergency heat is usually used during an outdoor shutdown but it should also be used following a p
11. Consult local codes for rooftop applications f unit cannot be located away from prevailing winter winds construct a wind barrier sized at least the same height and width as outdoor unit Position barrier 24 610 mm from he sides of the unit in direction of prevailing winds as illustrated in figure 7 Page 5 prevailing winter winds wind barrier 24 inlet air gt 610 AR a inlet air SS SS SS 220 inlet s RN ALLE 22 Ct inlet air Figure 7 Rooftop Application with Wind Barrier If unit cannot be located away from prevailing winter winds construct a wind barrier sized at least the same height and width as outdoor unit Position barrier 24 610 mm from the sides of the unit in direction of prevailing winds fig 7 Removing Panels IMPORTANT Do not allow panels to hang on unit by top tab Tab is for alignment and not designed to support weight of panel Panel shown slightly rotated to allow top tab to exit or enter top slot for removing or installing panel Bes B ROTATE IN THIS DIRECTION THEN DOWN 0 TO REMOVE PANEL Figure 8 Removing Installing Louvered Panels Details A B and C Remove the louvered panels as follows 1 Remove 2 screws allowing the panel to swing open slightly see figure 8 2 Hold the panel firmly throughout this procedure Rotate bottom c
12. D LEVEL a Figure 5 Elevated Slab Mounting using Feet Extenders Page 4 505076M 06 07 A IMPORTANT Unit Stabilizer Bracket Use field provided Always use stabilizers when unit is raised above the factory height Elevated units could become unstable in gusty wind conditions Stabilizers may be used on factory height units when mounted on unstable or uneven surface With unit positioned at installation site remove two side louvered panels to expose the unit base pan Install the brackets as illustrated in figure 6 using conventional practices replace the panels after installation is complete Slab Side Mounting 10 1 2 LONG SELF DRILLING SHEET METAL SCREWS ow STABILIZING BRACKET 18 GAUGE METAL 2 WIDTH HEIGHT AS BASE PAN D A 10 1 1 4 LONG HEX HD SCREW amp FLATWASHER CORNER POST PLASTIC ANCHOR USE IF CONCRETE HOLE DRILL 1 4 NOT IF PLASTIC SLAB HOLE DRILL 1 8 Deck Top Mounting STABILIZING MINIMUM 1 BRACKET 168 PER SIDE N GAUGE METAL 2 WIDTH HEIGHT AS REQ D BEND FOR EXTRA FORMRIGHT STABILITY ANGLE ONE BRACKET PER SIDE MIN FOR EXTRA STABILITY 2 BRACKETS PER SIDE 2 FROM EACH CORNER Figure 6 Installing Stabilizer Brackets ROOF MOUNTING nstall unit 6 152 mm above the roof surface to avoid ice build up around the unit Locate the unit above a load bearing wall or area of the roof that can adequately support he unit
13. ESSOR DELAY PINS REVERSING VALVE K2 RELAY 24V TERMINAL STRIP S87 CONNECTIONS LOW PRESSURE SWITCH SERVICE LIGHT OPTIONAL DEFROST THERMOSTAT S4 K3 RELAY HIGH PRESSURE SWITCH OPTIONAL Figure 22 HP13 Outdoor Unit Defrost Control Board DEFROST CONTROL TIMING PINS Each timing selection provides a different accumulated compressor run time period for one defrost cycle This time period must occur before a defrost cycle is initiated The defrost interval can be adjusted to 30 T1 60 T2 or 90 T3 minutes see figure 22 The defrost timing jumper is factory installed to provide a 90 minute defrost interval If the timing selector jumper is not in place the control defaults to a 90 minute defrost interval The maximum defrost period is 14 minutes and cannot be adjusted A TEST option is provided for troubleshooting The TEST mode may be started any time the unit is in the heating mode and the defrost thermostat is closed or jumpered If the jumper is in the TEST position at power up the control will ignore the test pins When the jumper is placed across the TEST pins for two seconds the control will enter the defrost mode If the jumper is removed before an additional 5 second period has elapsed 7 seconds total the unit will remain in defrost mode until the defrost thermostat opens or 14 minutes have passed If the jumper is not removed
14. LENNOX 2007 Lennox Industries Inc Dallas Texas USA RETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCE A WARNING Improper installation adjustment alteration ser vice or maintenance can cause personal injury loss of life or damage to property Installation and service must be performed by a qualified installer or service agency 4 CAUTION Physical contact with metal edges and corners while applying excessive force or rapid motion can result in personal injury Be aware of and use caution when working near these areas during installation or while servicing this equipment A IMPORTANT This unit must be matched with an indoor coil as specified in Lennox Engineering Handbook Coils previously charged with HCFC 22 must be flushed A IMPORTANT The Clean Air Act of 1990 bans the intentional venting of refrigerant CFCs HFCs and HCFCs as of July 1 1992 Approved methods of recovery recycling or reclaiming must be followed Fines and or incarceration be levied for noncompliance 06 07 MATA Page 1 INSTALLATION INSTRUCTIONS HP13 Series Units HEAT PUMP UNITS Technical 505 as dibus 06 07 Litho U S A Supersedes 07 06 Table of Contents HP 13 Outdoor Unite cy ores 1 Shipping amp Packing List 1 General Information 3 Unit DIMENSIONS 21e pri Rate I UU M bRe RE e 2 Setting the Unit cfu uec SEL 3 Removing Panels
15. Liquid Line To Vapor Line LIQUID METAL VAPOR LINE EINE SLEEVE WRAPPED IN ARMAFLEX Figure 16 Refrigerant Line Sets Transition from Vertical to Horizontal HP13 SERIES BRAZING CONNECTION PROCEDURE 1 Cut ends of the refrigerant lines square free from nicks or dents Debur the ends The pipe must remain round do not pinch end of the line 2 Before making line set connections use dry nitrogen to purge the refrigerant piping This will help to prevent oxidation and the introduction of moisture into the system 3 Use silver alloy brazing rods 5 or 6 percent minimum silver alloy for copper to copper brazing or 45 percent silver alloy for copper to brass or copper to steel brazing which are rated for use with HCFC 22 refrigerant Wrap a wet cloth around the valve body and the copper tube stub Braze the line set to the service valve 4 Wrap a wet cloth around the valve body and copper tube stub to protect it from heat damage during brazing Wrap another wet cloth underneath the valve body to protect the base paint NOTE The tube end must stay bottomed in the fitting during final assembly to ensure proper seating sealing and rigidity 5 If required install a field provided check expansion valve approved for use with HCFC 22 refrigerant in the liquid line at the indoor coil HP13 units are used in check expansion valve CTXV systems only See the Lennox Engineering Handbook for approved expansion v
16. al to atmospheric pressure minus vacuum pressure 6 When the absolute pressure reaches 23 000 microns 29 01 inches of mercury close the manifold gauge valves turn off the vacuum pump and disconnect the manifold gauge center port hose from vacuum pump Attach the manifold center port hose to a dry nitrogen cylinder with pressure regulator set to 150 psig 1034 kPa and purge the hose Open the manifold gauge valves to break the vacuum in the line set and indoor unit Close the manifold gauge valves 4 WARNING Danger of Equipment Damage Avoid deep vacu um operation Do not use compressors to evacu ate a system Extremely low vacuums can cause internal arcing and compressor failure Damage caused by deep vacuum operation will void war ranty 7 Shut off the dry nitrogen cylinder and remove the manifold gauge hose from the cylinder Open the manifold gauge valves to release the dry nitrogen from the line set and indoor unit 8 Reconnect the manifold gauge to the vacuum pump turn the pump on and continue to evacuate the line set and indoor unit until the absolute pressure does not rise above 500 microns 29 9 inches of mercury within a 20 minute period after shutting off the vacuum pump and closing the manifold gauge valves 9 When the absolute pressure requirement above has been met disconnect the manifold hose from the vacuum pump and connect it to an upright cylinder of HCFC 22 refrigerant Open the manifold gauge val
17. alve match ups and application information Check expansion valves equipped with Chatleff fittings are available from Lennox Refer to the Engineering Handbook for applicable check expansion valves for use with specific match ups See table 3 for valve kits Table 3 Indoor Check Expansion Valve Kits Model Kit Number HP 13 018 024 030 036 LB 85759F HP 13 042 048 LB 85759G HP 13 060 100188 01 A IMPORTANT Failure to remove a fixed orifice when installing an expansion valve on the indoor coil will result in im proper operation and damage to the system If you install a check expansion valve with an indoor coil that includes a fixed orifice remove the orifice before the check expansion valve is installed See figure 17 for installation of the check expansion valve O RING EXPANSION VALVE amp 7 O RING See NOTE STRAINER A DISTRIBUTOR amp LIQUID LINE STUB NOTE If installing expansion valve with an indoor coil that in cludes a fixed orifice remove orifice before installing valve Figure 17 Metering Device Installation Manifold Gauge Set TT When checking the unit charge use a manifold gauge set that is equipped with low loss hoses Do not use a manifold gauge set with anything other than a low loss hose See figure 18 for manifold gauge connections DEFROST DISTRIBUTOR THERMOSTAT CHECK EXPANSION VALVE BIFLOW NOTE ARROWS INDICATE OUTDOOR UNIT DIRECTION OF
18. c power sup plies before opening access panel Unit may have multiple power sup plies Install line voltage power supply to unit from a properly sized disconnect switch Ground unit at unit disconnect switch or to an earth ground NOTE To facilitate conduit a hole is in the bottom of the control box Connect conduit to the contro box using a proper conduit fitting NOTE Units are approved for use only with copper conductors 24V Class ll circuit connections are made in the low voltage junction box Refer to figure 9 for field wiring diagram NOTE For proper voltages select thermostat wire gauge per the following chart Wire run length less than 100 30m more than 100 30m Insulation type color coded temperature rating 35 minimum NOTE A complete unit wiring diagram is located inside the unit control box cover Install room thermostat ordered separately on an inside wall approximately in the center of the conditioned area and 5 feet 1 5 m from the floor It should not be installed on an outside wall or where it can be effected by sunlight drafts or vibrations Page 7 4 Install low voltage wiring from outdoor to indoor unit and from thermostat to indoor unit See figures 11 and 12 Outdoor Unit 24V power m 2 ostat Indoor Unit 24V power u 6 00 common common 1st stage auxiliary heat 1st stage auxiliary heat LAT I E F
19. cancer Fiberglass wool may also cause respiratory skin and eye irritation To reduce exposure to this substance or for further information consult material safety data sheets available from address shown below or contact your supervisor Lennox Industries Inc P O Box 799900 Dallas TX 75379 9900 General Information These instructions are intended as a general guide and do not supersede national or local codes in any way Authorities having jurisdiction should be consulted before installation When servicing or repairing HVAC components ensure the fasteners are appropriately tightened Table 1 shows torque values for fasteners Table 1 Torque Requirements Parts Recommended Torque Service valve cap 8 ft Ib 11 NM Sheet metal screws 16 Ib 28 in Ib 90 in Ib 8 ft Ib Machine screws 10 3 NM 10 NM Compressor bolts Gauge port seal cap Setting the Unit A CAUTION In order to avoid injury take proper precaution when lifting heavy objects Outdoor units operate under a wide range of weather conditions therefore several factors must be considered when positioning the outdoor unit Position the unit to allow adequate airflow and servicing clearance Maintain a minimum clearance of 24 inches 610 mm between multiple units as illustrated in figure 1 1 Place a sound absorbing material such as Isomode under the unit if it will be installed in a location or
20. cord the liquid line temperature 6 The outdoor temperature will determine which charging method to use Proceed with the appropriate charging procedure CHARGE USING THE WEIGH IN METHOD OUTDOOR TEMPERATURE lt 65 F 18 If the system is void of refrigerant or if the outdoor ambient temperature is cool first locate and repair any leaks and then weigh in the refrigerant charge into the unit 1 Recover the refrigerant from the unit 2 Conduct leak check evacuate as previously outlined 3 Weigh in the unit nameplate charge If weighing facilities are not available or if charging the unit during warm weather use one of the following procedures CHARGE USING THE SUBCOOLING METHOD OUTDOOR TEMPERATURE 65 18 When the outdoor ambient temperature is below 65 F 18 C use the subcooling method to charge the unit It may be necessary to restrict the air flow through the outdoor coil to achieve pressures in the 200 250 psig 1379 1724 kPa range These higher pressures are necessary for checking the charge Block equal sections of air intake panels and move obstructions sideways until the liquid pressure is in the 200 250 psig 1379 1724 kPa range See figure 21 Outdoor coil should be blocked one side at a time with cardboard or plastic sheet until proper testing pressures are reached cardboard or plastic sheet Four sided unit shown Figure 21 Blocking Outdoor Coil 1 With the manifold
21. cuation Evacuating the system of non condensables is critical for proper operation of the unit Non condensables are defined as any gas that will not condense under temperatures and pressures present during operation of an air conditioning system Non condensables and water vapor combine with refrigerant to produce substances that corrode copper piping and compressor parts A IMPORTANT Use a thermocouple or thermistor electronic vacuum gauge that is calibrated in microns Use an instrument that reads from 50 microns to at least 23 000 microns 1 Connect manifold gauge set to the service valve ports as follows e low pressure gauge to vapor line service valve e high pressure gauge to liquid line service valve 2 Connect micron gauge 3 Connect the vacuum pump with vacuum gauge to the center port of the manifold gauge set 4 Open both manifold valves start the vacuum pump 5 Evacuate the line set and indoor unit to an absolute pressure of 23 000 microns 29 01 inches of mercury During the early stages of evacuation it is desirable to close the manifold gauge valve at least once to determine if there is a rapid rise in absolute pressure A rapid rise in pressure indicates a relatively large leak If this occurs repeat the leak testing procedure NOTE The term absolute pressure means the total actual pressure within a given volume or system above the absolute zero of pressure Absolute pressure in a vacuum is equ
22. gauge hose still on the liquid service port and the unit s pressure stabilized use a digital thermometer to record the liquid line temperature 2 At the same time record the liquid line pressure reading 3 Use a temperature pressure chart for HCFC 22 to determine the saturation temperature for the liquid line pressure reading 4 Subtract the liquid line temperature from the saturation temperature according to the chart to determine subcooling 5 Compare the subcooling value results with those in table 5 If subcooling is greater than shown recover some refrigerant If subcooling is less than shown add some refrigerant Table 5 HP13 Subcooling Values Saturation Temperature F C Liquid Line Temperature F C Subcooling Value F C Model E 024 030 036 042 048 oF 6 11 8 6 6 4 ec 3 3 6 4 4 33 3 3 2 2 NOTE For best results use the same electronic thermometer to check both outdoor ambient and liquid line temperatures F 1 0 0 5 Page 13 HP13 SERIES CHARGE USING THE APPROACH METHOD OUTDOOR TEMPERATURE gt 65 18 The following procedure is intended as a general guide and is for use on expansion valve systems only For best results indoor temperature should be 70 F 21 C to 80 F 26 C Monitor system pressures while charging 1 Record outdoor ambient temperature using a digital thermometer 2 Attach high press
23. ient and liquid line temperatures 1 0 C 0 5 A IMPORTANT Use table 7 as a general guide when performing maintenance checks This is not a procedure for charging the unit Refer to Charging Checking Charge section Minor variations these pressures may be expected due to differences in installations Significant differences could mean that the system is not properly charged or that a problem exists with some component in the system oF C Table 7 HP13 Normal Operating Pressures Liquid 10 amp Vapor 5 PSIG HP13 018 Liquid Vapor HP13 024 Liquid Vapor HP13 030 Liquid Vapor HP13 036 Liquid Vapor HP13 042 Liquid Vapor HP13 048 Liquid Vapor HP13 060 Liquid Vapor 154 78 65 18 141 81 148 80 146 78 D 24 163 82 176 82 171 79 180 80 191 84 206 83 201 80 216 81 139 67 163 74 191 81 146 75 171 77 198 78 139 74 164 77 193 78 222 85 240 84 233 81 246 81 220 84 229 79 230 79 256 87 277186 271 81 284 82 256 85 268 81 262 82 296 89 322 87 313 83 328 85 294 87 308 81 300 84 Heating 192 64 185 60 198 58 196 58 204 59 197 39 213 58 180 53 176 50 188 47 185 47 195 49 189 31 200 46 172 43 165 49 175 35 176 37 184 39 181 25 189 37 164 3
24. l 4 101 6mm SCH 40 Piping Figure 3 Elevated Slab Mounting using Feet Extenders Small Base Units ELEVATING THE UNIT LARGER BASE UNITS Unlike the small base units which use round feet the larger base units are outfitted with elongated feet as illustrated in figure 4 which uses a similar method for elevating the unit height If additional elevation is necessary raise the unit by extending the length of the unit support feet This may be done with 2 SCH 40 female threaded adapter The specified coupling will fit snuggly into the recess portion of the feet Additional couplers can be used to make additional adjustments to the level of the unit NOTE Keep the height of extenders short enough to ensure a sturdy installation If it is necessary to extend further consider a different type of field fabricated framework that is sturdy enough for greater heights 2 50 8mm SCH 40 Female Threaded Adapter Figure 4 Elevated Slab Mounting using Feet Extenders Larger Base Units STABILIZING UNIT ON UNEVEN SURFACES To help stabilize an outdoor unit some installations may require strapping the unit to the pad using brackets and anchors commonly available in the marketplace TYPICAL INSTALLATION WITH 3 TO 4 IN EXTENDERS INSTALLED IMPORTANT ALWAYS USE STABILIZER MOUNTING BRACKET ON SLAB ELEVATED INSTALLATIONS BUILDING STRUCTURE STABILIZER BRACKETS FEFEFETET ET GROUN
25. n control the pressure down to 1 or 2 psig 6 9 to 13 8 kPa USING AN ELECTRONIC LEAK DETECTOR OR HALIDE 1 Connect a cylinder of HCFC 22 to the center port of the manifold gauge set 2 With both manifold valves closed open the valve on the HCFC 22 cylinder vapor only 3 Open the high pressure side of the manifold to allow the 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 ounces 57 g or 3 pounds 31 kPa pressure Close the valve on the HCFC 22 cylinder and the valve on the high pressure side of the manifold gauge set Disconnect the HCFC 22 cylinder 4 Connect a cylinder of dry nitrogen with a pressure regulating valve to the center port of the manifold gauge set 5 Connect the manifold gauge set high pressure hose to the vapor valve service port Normally the high pressure hose is connected to the liquid line port however connecting it to the vapor port better protects the manifold gauge set from high pressure damage 6 Adjust the dry nitrogen pressure to 150 psig 1034 kPa Open the valve on the high side of the manifold gauge set which will pressurize line set and indoor unit 7 After a few minutes open a refrigerant port to ensure the refrigerant you added is adequate to be detected Amounts of refrigerant will vary with line lengths Check all joints for leaks Purge dry nitrogen and HCFC 22 mixture Correct any leaks and recheck Eva
26. ont seated service valve is shown in figure 19 When this valve is closed the service port is open to the line set Access the service port and open and close valves as described in the following paragraphs A IMPORTANT Service valves are closed to the outdoor unit and open to line set connections Do not open until re frigerant lines have been leak tested and evacuated All precautions should be exercised in keeping the system free from dirt moisture and air TO ACCESS SCHRADER PORT 1 Remove service port cap with an adjustable wrench 2 Connect gauge to the service port 3 When testing is completed replace service port cap Tighten finger tight then torque per table 1 Page 3 TO OPEN FRONT SEATED SERVICE VALVES 1 Remove stem cap with an adjustable wrench 2 Use a service wrench with a hex head extension 3 16 for liquid line valve sizes 5 16 for vapor line valve sizes to back the stem out counterclockwise as far as it will go 3 Replace the stem cap Tighten finger tight then torque per table 1 Page 3 TO CLOSE FRONT SEATED SERVICE VALVES 1 Remove the stem cap with an adjustable wrench 2 Use a service wrench with a hex head extension 3 16 for liquid line valve sizes 5 16 for vapor line valve sizes to turn the stem clockwise to seat the valve Tighten it firmly 3 Replace the stem cap Tighten finger tight then torque per table 1 Page 3 Vapor Line Ball Valve Ball type service valves
27. ooling season the following service checks should be performed by a qualified service technician First turn off electrical power to the unit prior to performing unit maintenance e Inspect and clean the outdoor and indoor coils The outdoor coil may be flushed with a water hose NOTE It may be necessary to flush the outdoor coil more frequently if it is exposed to substances which are corrosive or which block airflow across the coil e g pet urine cottonwood seeds etc e Visually inspect the refrigerant lines and coils for leaks e Check wiring for loose connections Check voltage at the indoor and outdoor units with units operating Check the amperage draw at the outdoor fan motor compressor and indoor blower motor Values should be compared with those given on unit nameplate e Check clean or replace indoor unit filters Check the refrigerant charge and gauge the system pressures e Check the condensate drain line for free and unobstructed flow clean if necessary e Adjust blower speed for cooling Measure the pressure drop over the coil to determine the correct blower CFM Refer to the unit information service manual for pressure drop tables and procedure NOTE If owner reports insufficient cooling the unit should be gauged and refrigerant charge checked Refer to section on refrigerant charging in this instruction Optional Accessories Refer to the Engineering Handbook for optional accessories
28. orner of panel away from hinge corner post until lower 3 tabs clear the slots see figure 8 Detail B HP13 SERIES OUTDOOR FAN COMPRESSOR CRANKCASE HEATER OW 0 4 COMPRESSOR CONTACTOR POTENTIAL RELAY START oo CAPACITOR DUAL STTOR DEFROST CONTROL z FAN 50 KE RELAY Ter X2 RELAY DEFROST REVERSING THERMOSTAT ton MAY BE OPTIONAL 208 230 60 1 EQUIPMENT T GROUND Figure 9 Typical Field Wiring Diagram 3 Move panel down until lip of upper tab clears the top slot in corner post see figure 8 Detail A A CAUTION To prevent personal injury or damage to panels unit or structure be sure to observe the following While installing or servicing this unit carefully stow all removed panels out of the way so that the panels will not cause injury to personnel nor cause dam age to objects or structures nearby nor will the pan els be subjected to damage e g being bent or scratched While handling or stowing the panels consider any weather conditions especially windy conditions that may cause panels to be blown around and bat tered Position and Install Panel Position the panel almost parallel with the unit figure 8 Detail D with the screw side as close to the unit as possible Then in a continuous motion
29. outdoor coil with a 15 foot 4 6 m line set For varying lengths of line set refer to table 4 for refrigerant charge adjustment Table 4 Refrigerant Charge per Line Set Lengths Liquid Line Oz per 5 ft g per 1 5m adjust from Set Diameter 15 ft 4 6m line set 3 8 9 5mm 3 ounce per 5 ft 85g per 1 5m NOTE If line length is greater than 15 ft 4 6 m add this amount If line length is less than 15 ft 4 6 m subtract this amount The outdoor unit should be charged during warm weather However applications arise in which charging must occur in the colder months 7he method of charging is determined by the unit s refrigerant metering device and the outdoor ambient temperature Measure the liquid line temperature and the outdoor ambient temperature as outlined below 1 Close manifold gauge set valves Connect the manifold gauge set to the service valves e low pressure gauge to vapor valve service port e high pressure gauge to liquid valve service port 2 Connect the center manifold hose to an upright cylinder of HCFC 22 3 Set the room thermostat to call for heat This will create the necessary load for properly charging the System in the cooling cycle 4 Use a digital thermometer to record the outdoor ambient temperature 5 When the heating demand has been satisfied switch the thermostat to cooling mode with a set point of 68 F 20 C When pressures have stabilized use a digital thermometer to re
30. ower outage if power has been off for over an hour and the outdoor temperature is below 50 F 10 C System should be left in the emergency heat mode at least six hours to allow the crankcase heater sufficient time to prevent compressor slugging Defrost System The HP13 defrost system includes two components a defrost thermostat and a defrost control DEFROST THERMOSTAT The defrost thermostat is located on the liquid line between the check expansion valve and the distributor When defrost thermostat senses 42 F 5 5 C or cooler the thermostat contacts close and send a signal to the defrost control board to start the defrost timing It also terminates defrost when the liquid line warms up to 70 F 21 C DEFROST CONTROL The defrost control board includes the combined functions of a time temperature defrost control defrost relay diagnostic LEDs and terminal strip for field wiring connections See figure 22 The control provides automatic switching from normal heating operation to defrost mode and back During compressor cycle call for defrost the control accumulates compressor run times at 30 60 or 90 minute field adjustable intervals If the defrost thermostat is closed when the selected compressor run time interval ends the defrost relay is energized and defrost begins FAN FIELD SELECT E TIMING PINS ii Q RELAY TEST PINS DIAGNOSTIC Opsz LEDS COMPR
31. place any time the unit is in operation 4 Electronic Air Cleaner Some systems equipped with an electronic air cleaner designed to remove airborne particles from the air passing through the cleaner If your system is so equipped ask your dealer for maintenance instructions 5 Indoor Unit The indoor unit s evaporator coil is equipped with a drain pan to collect condensate formed as your system removes humidity from the inside air Have your dealer show you the location of the drain line and how to check for obstructions This would also apply to an auxiliary drain if installed A IMPORTANT Sprinklers and soaker hoses should not be installed where they could cause prolonged exposure to the outdoor unit by treated water Prolonged exposure of the unit to treated water i e sprinkler systems soakers waste water etc will corrode the surface of steel and aluminum parts and diminish perfor mance and longevity of the unit 6 Outdoor Unit Make sure no obstructions restrict airflow to the outdoor unit Leaves trash or shrubs crowding the unit cause the outdoor unit to work harder and use more energy Keep shrubbery trimmed away from the unit and periodically check for debris which collects around the unit When removing debris from around the unit be aware of metal edges on parts and screws Although special care has been taken to keep exposed edges to a minimum physical contact with metal edges and corne
32. position that will transmit sound or vibration to the living area or adjacent buildings 2 Install the unit high enough above ground or roof to allow adequate drainage of defrost water and prevent ice build up 3 In heavy snow areas do not locate unit the where snowdrifts will likely build The unit base should be elevated above the depth of average snows NOTE Elevation of the unit may be accomplished by constructing a frame using suitable materials If a support frame is constructed it must not block drain holes in unit base 4 Locate the unit so prevailing winter winds will not blow into the coil 5 Locate unit away from overhanging roof lines which would allow water or ice to drop on or in front of coil or into unit See NOTES Control See NOTES Box NOTES Service clearance of 30 in 762 mm must be maintained on one of the sides adjacent to the control box Clearance to one of the other three sides must be 36 in 914 mm Clearance to one of the remaining two sides may be 12 in 305 mm and the final side may be 6 in 152 mm A clearance of 24 in 610 mm must be maintained between two units 48 in 1219 mm clearance required on top of unit Figure 1 Installation Clearances SLAB MOUNTING When installing unit at grade level the top of the slab should be high enough above grade so that water from higher ground will not collect around the unit The slab should have a slope tolerance away from
33. rs while applying excessive force or rapid motion can result in personal injury Cleaning of the outdoor unit s coil should be performed by a trained service technician Contact your dealer and set up a schedule preferably twice a year but at least once a year to inspect and service your air conditioning or heat pump system HEAT PUMP OPERATION Your new Lennox heat pump has several characteristics that you should be aware of Heat pumps satisfy heating demand by delivering large amounts of warm air into the living space This is quite different from gas or oil fired furnaces or an electric furnace which deliver lower volumes of considerably hotter air to heat the space Do not be alarmed if you notice frost on the outdoor coil in the winter months Frost develops on the outdoor coil during the heating cycle when temperatures are below 45 F 7 C An electronic control activates a defrost cycle lasting 5 to 15 minutes at preset intervals to clear the outdoor coil of the frost e During the defrost cycle you may notice steam rising from the outdoor unit This is a normal occurrence The thermostat may engage auxiliary heat during the defrost cycle to satisfy a heating demand however the unit will return to normal operation at the conclusion of the defrost cycle IN CASE OF EXTENDED POWER OUTAGE If the outdoor temperature is below 50 F 10 C and power to your outdoor unit has been interrupted for 6 hours or longer
34. see figure 20 function the same way as the other valves but cannot be rebuilt if one fails replace with a new valve The ball valve is equipped with a service port with a factory installed Schrader valve A service port cap protects the Schrader valve from contamination and assures a leak free seal 4 2 STEM CAP TO OUTDOOR BALL SHOWN CLOSED USE ADJUSTABLE WRENCH TO OPEN ROTATE STEM COUNTER CLOCKWISE 90 TO CLOSE ROTATE STEM CLOCKWISE 90 SERVICE PORT Ge SCHRADER VALVE Colt SERVICE PORT CAP Figure 20 Ball Type Vapor Valve Valve Closed Leak Testing After the line set has been connected to the indoor and outdoor units check the line set connections and indoor unit for leaks 4 WARNING Refrigerant can be harmful if it is inhaled Refriger ant must be used and recovered responsibly Failure to follow this warning may result in personal injury or death AWARNING Fire Explosion and Personal Safety Hazard Failure to follow this warning could result in damage personal injury or death Never use oxygen to pressurize or purge refrigeration lines Oxygen when exposed to a spark or open flame can cause damage by fire and or an explosion that could result in personal injury or death Page 11 HP13 SERIES A WARNING When using a high pressure gas such as dry nitrogen to pressurize a refrig eration or air conditioning system use a regulator that ca
35. st Job Name Job no Date Job Location City State Installer City State Unit Model No Serial No Service Technician Nameplate Voltage Rated Load Ampacity Maximum Fuse or Circuit Breaker Electrical Connections Tight J indoor Blower RPM S P Drop Over Indoor Dry COOLING Liquid Line Pressure HEATING Liquid Line Pressure Compressor Amperage Vapor Pressure Vapor Pressure Service Valves Fully Opened Caps Tight SEQUENCE OF OPERATION Heating Correct Cooling Correct Indoor Filter clean Refrigerant Lines Leak Checked Properly Insulated Outdoor Fan Supply Voltage Unit Off Outdoor Coil Entering Air Temp Refrigerant Charge Checked Refrigerant Charge Checked J Outdoor Fan Checked O Voltage With Compressor Operating THERMOSTAT Calibrated Properly Set Level Page 18 505076M 06 07
36. te a locked out pressure switch after the fifth occurrence of an open pressure switch see Table 8 The unit will remain locked out until power to the board is interrupted then re established or until the jumper is applied to the TEST pins for 0 5 seconds NOTE The defrost control board ignores input from the low pressure switch terminals as follows e during the TEST mode e during the defrost cycle e during the 90 second start up period e and for the first 90 seconds each time the reversing valve switches heat cool modes Diagnostic LEDs The defrost board uses two LEDs for diagnostics The LEDs flash a specific sequence according to the condition Table 8 Defrost Control Board Diagnostic LED Mode Green LED DS2 Red LED DS1 No power to control OFF OFF Simultaneous Slow FLASH Normal operation power to control Anti short cycle lock out Alternating Slow FLASH Low pressure switch OFF Slow FLASH ault Optional Low pressure switch OFF ON ockout Optional High pressure switch Slow FLASH fault Optional High pressure switch ON lockout Optional 505076M 06 07 Maintenance A WARNING Electric shock hazard Can cause inju ry or death Before attempting to per form any service or maintenance turn the electrical power to unit OFF at dis connect switch es Unit may have multiple power supplies Before the start of each heating and c
37. the building of 2 degrees or 2 inches per 5 feet 50 mm per 1500 mm to prevent ice build up under the unit during a defrost cycle NOTE If necessary for stability anchor unit to slab as described in Stabilizing unit on uneven surfaces Page 3 HP13 SERIES INSTALL UNIT LEVEL OR IF ON A SLOPE MAINTAIN SLOPE TOLERANCE OF 2 DEGREES OR 2 INCHES PER 5 FEET 50 MM PER 1 5 Mj AWAY FROM BUILDING STRUCTURE BUILDING STRUCTURE MOUNTING SLAB GROUND LEVEL Figure 2 Slab Mounting Options ELEVATING THE UNIT SMALL BASE UNITS If additional elevation is necessary raise the unit by extending the length of the unit support feet This may be done by cutting four equal true cut lengths of Schedule SCH 40 4 101 6mm piping to the height required as illustrated in figure 3 NOTE Keep the height of extenders short enough to ensure a sturdy installation If it is necessary to extend further consider a different type of field fabricated framework that is sturdy enough for greater heights The inside diameter of the 4 101 6mm piping is approximately 0 25 6 35mm greater than the pre installed feet on the unit Devise a shim that will take up the space and hold the extenders onto the feet during this procedure Small strips of 0 125 3 175mm thick adhesive foam may be used One or two small 1 25 4mm square strips should be adequate to hold the extender in place Leg Detai
38. until after the additional 5 second period has elapsed the defrost will terminate and the test option will not function again until the jumper is removed and re applied COMPRESSOR DELAY The defrost board has a field selectable function to reduce occasional sounds that may occur while the unit is cycling in and out of the defrost mode The compressor will be cycled off for 30 seconds going in and out of the defrost mode when the compressor delay jumper is removed CONNECTIONS Page 15 HP13 SERIES NOTE The 30 second off cycle is not functional when jumpering the TEST pins TIME DELAY The timed off delay is five minutes long The delay helps to protect the compressor from short cycling in case the power to the unit is interrupted or a pressure switch opens The delay is bypassed by placing the timer select jumper across the TEST pins for 0 5 seconds Pressure Switch Circuit The defrost control incorporates two pressure switch circuits The optional high pressure switch S4 connects to the board s HI PS terminals The board also includes connections for optional low pressure or loss of charge pressure switch S87 Switches are shown in figure 22 During a single demand cycle the defrost control will lock out the unit after the fifth time that the circuit is interrupted by any pressure switch wired to the control board In addition the diagnostic LEDs will indica
39. ure 15 shows how to install line sets on vertical runs Figure 16 shows how to make a transition from horizontal to vertical To hang line set from joist or rafter use either metal strapping material or anchored heavy nylon wire ties WIRE TIE Around vapor line only STRAPPING MATERIAL Around vapor line only TAPE OR WIRE TIE SLEEVE Strap the vapor line to the joist or TAPE OR rafter at 8 feet intervals then strap WIRE TIE the liquid line to the vapor line FLOOR JOIST OR ROOF RAFTER Figure 14 Refrigerant Line Sets Installing Horizontal Runs IMPORTANT Refrigerant lines must not contact wall LIQUID LINE OUTSIDE WALL VAPOR LINE WOOD BLOCK BETWEEN STUDS WIRE TIE INSIDE WALL STRAP NOTE Similar installation SLEEVE practices should be used if WIRE TIE line set is to be installed on exterior of outside wall WOOD BLOCK WIRE TIE STRAP SLEEVE A A VY AW A A VAPOR LINE WRAPPED WITH ARMAFLEX LIQUID LINE IMPORTANT Refrigerant lines must not contact structure Ba CAULK FIBERGLASS PVC PIPE INSULATIO Figure 15 Refrigerant Line Sets Installing Vertical Runs New Construction Shown Page 9 ANCHORED HEAVY NYLON WIRE TIE Strap Liquid Line To Vapor Line LIQUID LINE METAL VAPOR LINE SLEEVE WRAPPED IN ARMAFLEX AUTOMOTIVE MUFFLER TYPE HANGER Strap
40. ure gauge set and operate unit for several minutes to allow system pressures to stabilize given in table 6 If the values do not agree with the those in table 6 add refrigerant to lower the approach temperature or recover refrigerant from the system to increase the approach temperature Table 6 HP13 Approach Values Liquid Line Temperature F C Outdoor Temperature F C Approach Temperature F C 018 024 030 036 042 048 060 9 13 9 3 Compare stabilized pressures with those provided in table 7 Normal Operating Pressures Minor variations in these pressures may be expected due to differences in installations Significant differences could mean that the system is not properly charged or that a problem exists with some component in the system Pressures higher than those listed indicate that the system is overcharged Pressures lower than those listed indicate that the system is undercharged Verify adjusted charge using the approach method 4 Use the same digital thermometer used to check outdoor ambient temperature to check liquid line temperature Verify the unit charge using the approach method 5 The difference between the ambient and liquid temperatures should match the approach values 7 8 f 6 3 9 4 4 5 7 2 3 9 5 3 3 NOTE For best results use the same electronic thermometer to check both outdoor amb
41. ves to break the vacuum from 1 to 2 psig positive pressure in the line set and indoor unit Close manifold gauge valves and shut off the HCFC 22 cylinder and remove the manifold gauge set Start Up A IMPORTANT If unit is equipped with crankcase heater it should be energized 24 hours before unit start up to pre vent compressor damage as a result of slugging Page 12 505076M 06 07 1 Rotate fan to check for frozen bearings or binding 2 Inspect all factory and field installed wiring for loose connections 3 After evacuation is complete open the liquid line and vapor line service valves counterclockwise to release refrigerant charge contained in outdoor unit into the system 4 Replace stem caps and secure finger tight then tighten an additional 1 6 one sixth of a turn 5 Check voltage supply at the disconnect switch The voltage must be within the range listed on the unit nameplate If not do not start the equipment until the power company has been consulted and the voltage condition has been corrected 6 Set the thermostat for a cooling demand Turn on power to indoor blower unit and close the outdoor unit disconnect to start the unit 7 Recheck voltage while the unit is running Power must be within range shown on the nameplate Refrigerant Charging The unit is factory charged with the amount of HCFC 22 refrigerant indicated on the unit rating plate This charge is based on a matching indoor coil and
Download Pdf Manuals
Related Search