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PACKAGE UNITS GPG 10 AND 12 SEER. TECHNICAL SUPPORT 888-593-9988 MARK STOKES 713-861-2500 EXT. 630.

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Presentation on theme: "PACKAGE UNITS GPG 10 AND 12 SEER. TECHNICAL SUPPORT 888-593-9988 MARK STOKES 713-861-2500 EXT. 630."— Presentation transcript:

1 PACKAGE UNITS GPG 10 AND 12 SEER

2 TECHNICAL SUPPORT MARK STOKES EXT. 630

3 Model Number Chart

4 SERIAL NUMBER is for the year it was built 09 is for the month it was built

5 47” Wide Fits in a standard size Pickup! 12 & 10 SEER Packaged Gas Electric

6 Convenient access panels to the compressor High-efficiency Scroll and Energy-efficient reciprocating compressor. Copper tube/aluminum fin coil. Liquid line filter drier. Fully charged R-22 system. Louvered Guard Protection Cooling Features:

7 10 & 12 SEER Packaged Gas Electric Convenient access panels to the Evaporator coil and control section. Direct spark ignition system, which includes a microprocessor based control for the entire ignition sequence, all blower operation and all safety circuits. Diagnostic Indicator provided for trouble shooting system faults. Control Features:

8 Design Objectives 2 – 5 ton Single Phase 3, 4 & 5 ton Three Phase 12 &10 SEER Cooling, 80% AFUE Heating Capable of expansion to higher SEER ratings Convertible Easy Access Service Panels Architectural Gray

9 12 & 10 SEER Packaged Gas Electric Heating Features: Convenient access panels to the heating section. Redundant gas valve, natural gas and easy conversion to propane. Power-assisted combustion. L.P. Conversion Kit Available 12 & 10 SEER units offer a durable, T-140 Aluminized Steel tubular heat exchanger. California Low Nox Approved

10 Wrinkle-bend Process Manufacturing stress including wall-thinning is minimized Wrinkles are placed precisely where we want them Wrinkles promote turbulence to aid heat transfer and efficiency We begin with T-140 Aluminized Steel tubes

11 Dual-diameter/Muffler-joint 1-3/4” diameter fits inside a 1-1/4” diameter Tubes are joined with a proprietary process Velocity of combustion products is optimized Efficiency is maximized We apply a patented process to join tubes

12 1,000°F 300°F  Tube can grow in length and diameter  Growth is uniform at the cross-section  No opportunity for stress-cracks  Non-uniform thermal growth  Eyelets can pop  Stress-cracks can form Tubular Technology Renders Clamshell Obsolete 300°F 1,000°F800°F 110°F 300°F

13 INSTALLATION

14 CLEARENCE FROM COMBUSTIBLE MATERIALS

15 CURB INSTALLATION

16 RIGGING

17 PIPING

18 CONDENSATE DRAIN

19 FLUE HOOD & BUG SCREEN

20 12 & 10 SEER Packaged Gas Electric McDaniel Metals

21 10 & 12 SEER Packaged Gas Electric Blower Features: Convenient access panels to the blower section. Filter rack included on 12 SEER large (4 &5 ton) chassis. Easy removal of blower with two screws. Multi-speed evaporator blower. Fully insulated with blankets of fiberglass.

22 Shipped with four panels Base Features: 042 Aluminized Steel Bottom/Base Pan 2” High Base Rails 12 & 10 SEER Packaged Gas Electric

23 DUST COVER INSTALLATION

24 RECOMMENDED FILTER SIZES

25 Electrical 208/230 Volt Power connections and 460 Volt available in 5 Ton Cool only model Single Phase and Three phase models available Maximum Over current Protection determined by model

26 Wiring All wiring should be made in accordance with the National Electrical Code. Wire sizes and over current protection should be determined from the unit nameplate ampacity. Wire sizes should not be smaller than recommended by these two sources. All exterior wiring must be within approved weatherproof conduit. The unit must be permanently grounded in accordance with local codes.

27 HIGH VOLTAGE WIRING

28 LOW VOLTAGE WIRING

29 CHECKING THE COMPRESSOR

30 CHECKING CONTACTOR

31 CHECKING CAPACITOR

32 COMPRESSOR NORMINCLATURE

33 COMPRESSOR DIAGONSTICS

34 TESTING FOR GROUNDED COMPRESSOR

35 FLOW RATER

36 EVACUATION

37 HEATING SIDE OF GPG

38 CHECKING GAS PRESSURE Manifold Outlet Gas Pressure Natural…. Min. 3.2” W.C., Max 3.8” W.C. Propane….Min. 9.7” W.C., Max. 10.3” W.C.

39 CHECKING BURNERS

40 Burner

41 BURNER BOX REMOVAL

42 CHECKING BURNERS

43 CHECKING LIMIT SWITCH

44 Pressure Switch Check Meter on AC Voltage Setting ; between Quick Connect on Pressure Switch and Ground Prior to Operation check for open side of Pressure Switch (No Voltage Present) When Pressure Switch Closes 24 Volts should be present on N/O side Issue: Watch for switch bounce on windy days Issue: Watch for P.S. drop-out for low pressure

45 CHECKING PRESSURE SWITCH

46

47 PRESSURE SWITCH

48 INDUCED DRAFT BLOWER

49 Understanding ECM Motors

50 What does ECM mean? How does the ECM work? Variable Speed vs Constant Volume. What is PWM How does the ECM sense static pressure? Troubleshooting ECM motors.

51 BLOWER MOTOR & HOUSING

52 Electronic Controls

53 B Control B Has Green Diagnostic LED B Cannot be used alone; must be used with B Control B Control is set up for 50Hz Operation and for use in Europe (CE Mark)

54 Control Environment +80 to -40 Degrees Celsius (+176 to -40 F) 10% to 95% R.H. Non-Condensing 98 to 132VAC Line Voltage 18 to 30VAC Control Voltage Frequency - 60Hz UL & cUL Approved

55 General Functions “W” Input On (Call for Heat) –Checks to see pressure switch open –Turns on Inducer –Pressure Switch Closes; 15 Second Pre-Purge –Starts Sparking & Gas Valve Turns On for 7 Seconds –Flame Sensed Anytime During Spark –Gas Valve Stays On –Blower Comes On after 30 Second Delay “W” Input Off (Call for Heat Satisfied) –Gas Valve De-Energizes Immediately –Inducer Remains on for 29 Second Post Purge –Indoor Blower De-Energizes after Selected Blower Off Delay

56 General Functions Continued.... Single Compressor Mode (Tab is not Broken) –“Y” Input On (Call for Cooling) 3 Minute Anti-Short Cycle Timer from the time the compressor was last on. Cooling Speed Blower after a 7 second delay –“Y” Input Off (Call for Cool Satisfied) Cooling Speed Fan Off after 60 Second Delay Dual Compressor Mode (Tab is Broken) –1st Stage Compressor is Energized Externally –“Y” Input On for 2nd Stage Cooling after 7 Second Delay –“Y” Input Off ; Cooling Speed Fan off after 60 Second Delay

57 General Functions Continued.... “G” Input On (Call For Fan) –Fan Immediately on Heat Speed “G” Input Off –Fan Immediately Shuts Off If “Y” input Occurs During “G” –Blower Switches to Cooling Speed If “W” Occurs During “G” –Blower off when Heat Blower On Delay Begins –Continuous Fan Operates while control is in Heat Mode Lockout Test/Speed-Up Bypasses Compressor Short-Cycle Timer –If Shorted for Over 4 Minutes ; Control Ignores = Operates Normal

58 Diagnostic Codes Steady On = Normal Operation in Standby 1 Flash = Lockout for Ignition Failure or Flame Dropouts –3 Trials for Ignition or 5 Flame Losses 2 Flashes = Pressure Switch Open with Inducer On 3 Flashes = Pressure Switch Stuck Closed with Inducer Off 4 Flashes = Limit Switch Open –Heat Speed Blower and Inducer On Until Limit Closes –Blower Runs thru Off Delay; Inducer runs thru 29 Second Post-Purge 5 Flashes = Flame Detected with Gas Valve Off –Blower and Inducer Both On Until No Longer Sensed –Control Locks out But Senses Limit and Flame –Control is Reset By Removing Power or after 1 Hour Automatically 6 Flashes = Compressor Delayed for Short Cycle/Staging Timer Status Light Off = Board Hardware Fault

59 Flame Sense Checking Digital Meter set for lowest uA Setting Meter in series with Flame Sense Rod Wire Control must read a minimum of.5uA during flame sensing period Average current reading is around 3-5uA. Control constantly monitors Flame during heating operation Issue: Flame Sense Rod gets corroded ; Clean w/ steel wool Issue: Flame Rod not situated in Flame Correctly

60 Ground Check Meter set to Ohms or Resistance Setting Place Meter from P1-6 or COM quick connect to chassis ground Reading should be near Zero ohms Issue: COM Quick Connect Loose ; causes board resetting when blower starts Issue: Flame Sensing problems if improper grounding in system

61 GPG TROUBLESHOOTING THEORY OF OPERATION Control of heating, cooling, and fan functions in response to a standard thermostat Direct spark ignition using a microprocessor to control timing, flame sensing, and ignition retries Monitoring of system pressure switch and limit switch Control of gas valve, indoor fan, and induced draft motor based on the thermostat demand and status of safety inputs Control of compressor contactor Diagnostic indicator to provide information on power to the control and control status

62 GPG TROUBLESHOOTING Summary of Timing Functions (in seconds) FunctionSignal NameDelay-OnDelay-Off Heat SpeedMV (1)30120, 135,150 (2) Cool SpeedY760 CompressorY60 (3)180 (4) Induced Draft 15 (5)29 1. Heat speed delay on and off occur only after flame has been sensed and main valve (MV) is energized 2.Selectable with jumpers 3. Indicates timing when “Two Stage Comp” tab is broken off, timer becomes delay on make 4. Indicates timing when “Two Stage comp”tab is not broken off, timer becomes compressor lock out between cycles(I.e. Minimum timing between compressor cycles) 5. Prepurge timing (not delay on )

63 GPG TROUBLESHOOTING Inputs Limit Switch –The limit switch is connected to control pins 4 and 5. The limit switch is connected is electrically between fused 24 VAC and the thermostat R Pressure Switch-The pressure switch is connected on pins 6 and 8. The pressure switch “W and the gas valve relay contacts Thermostat call for Heat “W”-24 VAC thermostat input. Connection via pin 10 Thermostat call for cool “Y”- 24 VAC thermostat input connections via pin 11 Thermostat call for fan “G”- 24 VAC thermostat inputs. Connection via pin 7 Flame Sense- Open circuit flame sense voltage shall be approximately 100 VAC. The control requires at least.5 microamperes DC flame current to guarantee flame is sensed

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66 12 & 10 SEER Packaged Gas Electric Leading Warranties: 12 SEER offers an Aluminized Steel Heat Exchanger with a 20Year limited Warranty and10 Year Limited Warranty on the Compressor and Parts. 10 SEER offers an Aluminized Steel Heat Exchanger with a 20Year limited Warranty and 5 Year Limited Warranty on the Compressor and Parts.


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