Lennox Store Training

Bullet Piercing Valve Is the original specially designed service valve for gaining access to a sealed refrigeration system. Used to access sealed systems without having to cut lines and recover refrigerant. •  Has a permanent, patented gasket that provides a larger sealing area than a standard O ring gasket. •  Has a ¼ inch flare access port. •  Comes with two sleeves to accommodate three different sizes of tubing, ¼”, 5/16” and 3/8”. •  Can withstand a maximum of 500 PSI of pressure. •  Has three points of compression, compared to the competitors two points. •  Has a hardened needle for accurate seating and use time after time. LENNOX #Y8797 SUPCO #BPV31

Flame Sensor Cleaner A convenient tool used to remove carbon build up on a dirty flame sensor. •  Before this was available Technicians used sandpaper or a dollar bill to clean the sensor LENNOX #Y8798 SUPCO #FSC10

Condensate Clean Out Valve A ¾” valve for condensation line cleaning. •  ¼” flare connection for service and maintenance access, nitrogen creates the pressure to clear the line. •  Valve turns 180 degrees to clear line in either direction. •  Arrow on the valve indicates direction the line is being cleared. •  It is code to have a permanent valve attached. LENNOX #Y8799 SUPCO #JV1

Linebacker® Surge Arrestor •  Surge Protection is necessary in the HVAC Market. •  The LBK10 is more than a Surge Protector, it is a voltage & ground monitor as well. •  It also uses a series of blinking lights for diagnostics. •  Mounts at the Condensing unit or at the Furnace/Air Handler. •  Will shut the unit down if it sacrifices itself. •  Will also shut the unit down if it senses over voltage, low voltage, or loss of ground. In these cases it will reset itself if the problem corrects itself. •  Go to LBK10.COM for additional information. •  Note: Less expensive surge protectors DO NOT SHUT THE SYSTEM DOWN, the system continues to run unprotected after the device sacrifices itself! •  Contractors need a better understanding of Surge Protection. •  Surge protectors need a ground of 25 OHMS or less resistance . •  Surge Protectors degrade over time and should be replaced every 3-4 years. LENNOX #Y8800 SUPCO #LBK10

LED Megohmmeter Is the most effective way to measure the insulation resistance of motors, compressors, windings, and wire. •  Range from 20 to 1000 megohms. •  Visual results that a Technician can show the customer •  6 inch wire test leads w/ alligator clips. •  Includes a soft carrying case. •  Provides up to 975 volts. •  Visual results that a Technician can show customer. •  Operates on two C batteries. LENNOX #Y8801 SUPCO #M500

Universal Air Pressure Sensing Switch •  Reliable and highly accurate. •  Eliminates the need to carry many different OEM switches. •  Senses positive, negative, or differential pressures. •  Set point range of 0.01 to 10.0 inches of water column. •  Contact arrangement – single pole double throw. •  28 VA pilot duty @ 24 VAC / 125 VA pilot duty @ 120 VAC. •  Operating temperature range – 40 to 190 degrees. •  Low cost. LENNOX #Y8802 SUPCO #NS2000031

Amp Control Circuit Tester For testing control circuits while avoiding fuse replacement. Can also be used as a temporary emergency repair. •  Has a manual reset thermal cut out. •  Two sizes – 3 AMP and 5 AMP. •  Saves time and money on fuses. LENNOX #Y8803 #Y8804 SUPCO #POP3 #POP5

Adjustable Air Pressure Switch A more precise adjustable pressure switch. •  Two tube size connections – ¼ and 1/8 inch. •  Adjustable set points. •  Contact arrangements – single pole, double throw. •  5 AMP non-inductive 120 VA @ 277 VAC. 1 AMP pilot duty 120 VA @ 120 VAC. •  Operating temperature range – 40 to 190 degrees. •  2 year warranty comes standard. LENNOX #Y8805 SUPCO #RSS498013

Pow-R-Pak with Capacitor A hard start kit using a positive temperature coefficient (PTC) relay and start capacitor. •  2 wire installation. •  Can be used on permanent split capacitor (PSC) compressors, ½ through 10 horse power. •  Voltage range – 90 to 277 VAC. •  SPP5 Torque increase of 300%. •  SPP6 Torque increase of 500% •  UL and NATE recognized. •  Very economical Hard start solution LENNOX #Y8806 #Y8807 SUPCO #SPP5 #SPP6

Hard Start Series A hard start kit using an electronic potential relay (EPR) and start capacitor with an electronically timed circuit. •  2 wire installation. •  Can be used on permanent split capacitor (PSC) and capacitor start/ induction run (CSIR) type compressors 1 horse power and up. •  Voltage range – 170 to 277 VAC •  UL and NATE recognized. •  Preferred technology for some Technicians •  Commonly referred to as an “Electronic Hard Start”. LENNOX #Y8808 SUPCO #SPP8E

Ultra Hard Start Series Hard Start kits using a mechanical potential relay (MPR) and start capacitor for 1 HP – 5 HP compressors. •  2 wire installation. •  Can be used on permanent split capacitor (PSC) and capacitor start/ induction run (CSIR) compressors. •  Voltage Range – 208 to 277 VAC. •  UL and NATE recognized. •  SPR1 is used 3.5 HP – 5 HP •  SPR5 is used 1 HP – 3.5 HP •  The reason for two sizes is you need to size to the compressor.LS EUNPNCOOX #Y8809 #Y8810 #SPR1 #SPR5

Digital Vacuum Gauge Is the most accurate vacuum gauge with the most durable sensor in the market. •  Ultra Fine resolution •  Reads vacuum in 7 international units. •  Display updates every ½ second. •  Built in magnetic hanger. •  Cleaning port provides quick cleaning and drying of sensor. •  Low battery indicator & Auto shut off. •  Every Technician uses when pumping down a system with their vacuum pump to insure the proper vacuum and check for leaks. LENNOX #Y8811 SUPCO #VG64

Potential Relays When a single phase motor runs, it produces a higher voltage than what is being provided (like a generator adding voltage). A potential relay opens the start circuit when a higher voltage is detected. •  Voltage sensitive relay. •  Instant restart. •  Safety time delay. •  Can be used with any suitable sized start capacitor. LENNOX #Y8812 #Y8813 #Y8814 #Y8815 #Y8816 #Y8817 #Y8818SUPCO #Y8819 #Y8820 #9063 #9064 #9065 #9066 #9067 #9068 #9069 #9070 #9071

Fan Relays Single pole relays, both single and double throw with three coil voltages. •  SPST up to 4 AMPS. •  SPST coil voltages – 24, 120, 240 Volts. •  SPDT up to 1 AMP. •  SPDT coil voltages – 24, 120, 240 Volts. •  Standard foot mount. •  ¼” male spade connectors. Same as 90370-72-74, 12 AMP @ 120 Volt, SPDT, and 90380-82-84, 13 AMP @ 120 Volt, NO/NC. LENNOX #Y8821 #Y8822 #Y8823 #Y8824 #Y8825 #Y8826 SUPCO #90290 #90291 #90292 #90293 #90294 #90295 LENNOX #Y8830 #Y8831 #Y8832 #Y8833 #Y8834 #Y8835 SUPCO #90370 #90372 #90374 #90380 #90382 #90384

SPST/SPDT/DPST & DPDT Diagrams

Definitions Pole refers to the number of circuits controlled by the switch: SP switches control only one electrical circuit. DP switches control two independent circuits (and act like two identical switches that are mechanically linked). Throw refers to the position of the actuators: ST close a circuit at only one position. DT switches close a circuit in two positions. BTU: British Thermal Unit - 12,000 BTU = 1 Ton / 18,000 BTU = 1.5 Ton / 24,000 BTU = 2 Ton, etc.

Motor Types SP - shaded pole PSC - permanent split capacitor CSIR - capacitor start/induction run CSCR - capacitor start/ capacitor run ECM - electrically commutated motor

Basic Conversions Transformer VA to Amps Amps = VA ÷ Volts Example - 40 VA ÷ 24 Volts = 1.6666 Amps Heating Conversion Factors Watts-hr X 3.413 = BTU's KW-HR X 3413.0 = BTU's

General Purpose Relays The workhorse of relays and the most commonly used. There probably isn’t an HVAC service truck in the nation without at least one of these on it. They are switches that open and close circuits electromechanically or electronically. Relays control one or more circuits by opening and closing contacts in another circuit. •  DPDT up to 13.8 AMPS @ 120 Volts, 7.6 AMPS @ 208 Volts, 6.9 AMPS @ 240 Volts, 6 AMPS @ 277 Volts. •  Coil voltages – 24, 120, 208/240 Volts. •  Standard foot mount. •  Standard socket design. •  ¼” male spade connectors. LENNOX #Y8827 #Y8828 #Y8829 SUPCO #90340 #90341 #90342

Adjustable Surface Thermostats An adjustable surface contact switch controlled by adjusting the temperature rise with a set differential. The AT012 through AT015 will close on temperature rise, and the AT021 – AT022 will open on temperature rise. •  Covers up to 95% of heater and dryer application. •  Dial knob. •  40 degree adjustment range. •  ¼” male spade connections. LENNOX #Y8836 #Y8837 #Y8838 #Y8839 #Y8840 #Y8841 SUPCO #AT012 #AT013 #AT014 #AT015 #AT021 #AT022

Adjustable Potential Relays Same function as other potential relays, only with a 1.0 to 1.5 time adjustment. •  Voltage sensitive relay. •  Adjustable pick up voltage. •  Universal mounting bracket. •  Operating voltage – 110 to 270 VAC single phase, 30 AMP max. •  Screw or push on terminals. Same as the SUPR universal Potential Relay which has a time function relay instead of a voltage sensitive relay. LENNOX #Y8842 #Y8843 SUPCO #APR5 #SUPR

Sequencers Is a small circuit designed to keep other circuits stable by quickly turning switches on and off to prevent mechanical devices from overheating. •  Direct replacement for most ICP/Carrier and Goodman fan and heat sequencing functions. •  24 Volt input control. •  Contacts designated M1- M2 of a Multi-timing sequencer and will turn on first and off last, as required by UL and CSA for electric heating applications. •  5 second delay between all subsequent stages, unless functioning together. •  Standard foot mount. •  ¼” male spade connectors. LENNOX #Y8844 #Y8845 #Y8846 SUPCO #Q103 #Q106 #Q108

Cam-Stat® Blower Control Increases comfort and efficiency by adjusting the delay on the start and stop cycle. •  24 Volt control voltage. •  Relay contacts – SPST •  Blower on time adjustment from 0 to 240 seconds. •  Blower off time adjustment from 0 to 240 seconds. LENNOX #Y8847 SUPCO #BC7070

Cam-Stat® Fan & Limit Control An air temperature sensing bi-metal strip mounted at the end of an extension arm (either 3 or 7 inch) to put it in the heated air flow for a more precise and accurate temperature reading. •  Adjustable fan OFF setting from 90 to 120 degrees. •  Adjustable fan differential setting from 25 to 50 degrees. •  Adjustable limit setting from 150 to 250 degrees. •  This is fairly old technology, but are still being replaced.LENNOX #Y8848 #Y8849 #Y8850SUPCO #FAL3C05TD120A #FAL7C05TD120A #FALTS57C05120A

Cam-Stat® Limit Control An air temperature sensing bi-metal strip mounted at the end of an extension arm (either 3 or 7 inch) to put it in the heated air flow for a more precise and accurate temperature reading. •  SPDT switch. •  Adjustable limit setting from 120 to 250 degrees. LENNOX #Y8851 #Y8852 SUPCO #L593BA #L597BA

Basic HVAC System