Lochinvar 502, 2072 operation manual Set clock, Configuration of the cascade

Page 48

Installation & Operation Manual

6 Startup

Set clock

The SMART SYSTEM control has a built-in clock that it uses for its night setback feature and for logging events. This clock must be set when the appliance is installed, and anytime the appliance has been powered off for more than one month. Use the following procedure to set the clock:

1.Press and hold the MENU key (FIG. 7-1) for at least 5 seconds.

2.The display changes to ready “ENTER MENU CODE”, with four (4) zeros below it.

3.Change the zeros to match the user code (factory set at “0704”). Use the UP and DOWN keys to increment or decrement the flashing digit, and the NEXT and PREVIOUS keys to select which digit flashes.

4.Press the ENTER key.

5.The display changes to read USER CODE for a few seconds, then displays a menu.

6.Press the ENTER key.

7.Press the UP key twice to display “A3 DATE AND TIME”.

8.Press the ENTER key once.

9.The date and time are displayed as “YY:MM:DD W hh:mm”, where:

mm:minutes

hh:hour (24 hour time; e.g., 2:00 PM = 14:00)

W:day of the week (1 = Sunday, 2 = Monday, 3 = Tuesday, etc.,)

YY:year

MM: month

DD:date

NOTICE The internal clock does not adjust for Daylight Savings Time and therefore, will

require a manual adjustment.

Use the UP and DOWN keys to increment or decrement the flashing number, and the NEXT and PREVIOUS keys to select which number flashes.

10.Press the ENTER key to save the setting.

11.Press the MENU key twice to exit the Programming Mode.

48

Configuration of the cascade

When installed in a Cascade system, the individual controls must be programmed for cascade operation. This is accomplished by accessing the control parameters.

Input the Installer code as described in the Copper-fin2Service Manual. Once the control parameters have been accessed, use the DOWN arrow key to select the H Control Mode parameters. Press the ENTER key to access these parameters. Use the UP arrow key to access parameter H4 Cascade. Press the ENTER key to access this parameter. Use the DOWN arrow key to select Enable. Press the ENTER key to program this into the control. Press the EXIT key, then press the DOWN key until I Cascade is selected.

Press the ENTER key to select the parameter I1 BLR Address. Press the ENTER key to access this parameter. Each unit in the Cascade system must be programmed with its own address. The unit designated as the Leader will have an address of 0. The remaining units in the Cascade will be Members and have addresses from 1 - 7. Use the UP and DOWN arrow keys to select the appropriate address. Press the ENTER key to program this into the control.

Press the MENU key twice to exit the control parameters. Repeat this procedure for all appliances in the Cascade, designating the Leader control and the Member controls.

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Contents Installation & Operation Manual Models 502 Save this manual for future referenceContents Please read before proceeding Special instructionsRemoval of Combustion Chamber Lining or Base Panels Safety information Owner warningCopper-fin2- How it works Copper-fin2- How it works Copper-fin2- How it works Specifications RatingsDetermine unit location Location of unitIndoor clearances from combustible construction Freeze protectionOutdoor pool heater installation LocationHydronic systems anti-freeze Combustion and ventilation airOutside Combustion Air Using Direct Venting Minimum Recommended Combustion AIR Supply to Equipment RoomExhaust fans Combustion air filterVenting Identify your appliance’s vent systemCAT IV Flue pipe materials CAT I Negative pressure non-condensingVent system options Draft VentingGeneral information Venting supportBarometric damper location Conventional negative draft venting see Negative draftFlue outlet piping Common Venting SystemsMasonry chimney installations Vertical vent termination clearances and locationInspection of a masonry chimney 1Vent Termination from Peaked Roof 10 ft. or Less From Ridge Vertical DirectAire venting see Combustion air inlet pipingLength of air inlet pipe Sidewall air inletVertical Rooftop Air Inlet Combined air inlet pointsClearances Venting of flue products Directaire Kits Model Horizontal KIT Vertical KITSidewall venting see Sidewall with fanSidewall venting termination Sidewall vent termination clearances and locationDrain tee installation Sidewall venting without fanModels 502 Horizontal DirectAire venting Powered Venting see Venting of flue productsDirect venting see Flue outlet pipingVertical DV venting termination Masonry chimney installation Horizontal DV venting terminationHorizontal Vent Termination Clearances and Location Combustion air inlet pipingConnecting the air inlet pipe to the unit Air inlet piping materialsLength of air inlet pipe Sealing PVC, CPVC, ABS, dryer vent, and flex duct vent pipeMultiple sidewall direct vent installations Vertical and sidewall combustion air inletHorizontal combustion air inlet clearances Vertical Combustion Air Inlet ClearancesOutdoor installation see Outdoor vent/air inlet locationOutdoor vent cap kit Connecting to gas supply Gas connectionsGas connection Gas pressure testSuggested GAS Pipe Size for Single Unit Installations Model Combination gas valvesGas train and controls Venting of combination gas valvesGAS Piping Size Chart Checking gas supply pressureWater connections Circulating pump502 752 Models 992 1442 ModelsHeat exchanger Initial set-up of maximum water flowMinimum Pump Performance Auxiliary Mixed Water Limit Control3Heater Within 15 feet of Pool Piping 6Cascaded Heaters Beyond 15 feet of Pool Piping Pool Return Sensor Location MIN Primary Automatic bypass valve cover installation Pumped Automatic BypassOutdoor operation 3-way valve cover Water flow switch Pump purge delayPump purge pre-running delay Relief valveWay automatic bypass valve wiring Way Automatic Bypass Valve WiringRemote Wire Connection Electrical connectionsInstallation must comply with Pool heater operating control moduleLine voltage connections AMP Draw DataLouver proving switch Pool return sensor 2-wirePool supply/limit sensor 4-wire Low voltage connectionsAlarm contacts Wiring of the cascadePre-start checklist StartupStarting the filter system Check for gas leaksCheck thermostat circuits Check vent and air pipingPlacing the pool heater in operation Start the pool heater2Operating Instructions Configuration of the cascade Set clockOperating information GeneralPool heater temperature regulation DAY Switching on Sequence CascadeSequence of the cascade Sequence of operation MENU/EXIT Display Screen ENTER/RESET Updown Copper-fin2control moduleAccess modes InstallerUser To save parameters and exit programmingStatus display screens Unit Pump Delay Sysrtn OpenSysrtn Shorted STG DemandMaintenance Maintenance and annual startup Service technicianOwner maintenance Maintenance Address reported problemsInspect appliance area Inspect appliance interiorCheck all wiring Check control settingsCheck relief valve Inspect/replace hot surface igniter Ignition system checkoutInspect and clean burner Perform start-up and checks Check burner flameCheck flue gas passageways Review with owner Oiled bearing circulatorsConnection diagram Digital HarnessController Ladder diagram LOW VoltageRuntime Contacts 2BOARDCONNECTION Outdoor S5SENSOR POOL2ND Page
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2072, 502 specifications

Lochinvar 2072,502 is an innovative and robust water-heating solution tailored for residential and commercial applications. This model represents a significant advancement in energy efficiency and performance, catering to the dynamic heating requirements of modern buildings.

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