Lochinvar 502, 2072 Check thermostat circuits, Check vent and air piping, Start the pool heater

Page 46

6 Startup

If freeze protection is not provided for the system, a low ambient temperature alarm is recommended for the equipment room. Damage to the pool heater by freezing is non-warrantable.

1.Pump Operation - MOST IMPORTANT - This pool heater is designed for continuous operation of the filter system pump when the burners are firing. If the system pump does not run continuously, an interlock mechanism should be provided to disable when/if the system pump turns off. The constant flow of warm pool water can help prevent freezing.

2.Anytime the temperature measured at the sensor drops below 45°F, the temperature control turns on the pump to circulate the water, if the pump option is installed.

3.Location - Indoor pool heaters must be located in a room having a temperature safely above freezing [32°F(0°C)].

4.Outdoor Pool Heater Installation - Use extreme caution to prevent freezing. A snow screen should be installed to prevent snow and ice accumulation around the pool heater or its venting system.

5.Shut-Down and Draining - If for any reason, the pool heater is to be shut off, the following precautionary measures must be taken:

a.Shut off gas supply;

b.Shut off water supply;

c.Shut off electrical supply;

d.Drain the pool heater completely. Remove the threaded drain plugs from the inlet and outlet sides of the front header on the heat exchanger (see FIG.’s 4-1 and 4-2). Blow all water out of the heat exchanger. Leave drains open until Spring.

e.Drain pump and piping.

Check thermostat circuit(s)

1.Disconnect the two external wires connected to the enable terminals on the connection board.

2.Connect a voltmeter across these two incoming wires. Close each thermostat, and relay in the external circuit one at a time and check the voltmeter reading across the incoming wires.

3.There should NEVER be a voltage reading.

4.If a voltage does occur under any condition, check and correct the external wiring.

5.Once the external thermostat circuit wiring is checked and corrected if necessary, reconnect the external thermostat circuit wires to the connection board. Allow the pool heater to cycle.

Check vent and air piping

Inspect vent piping and air piping for signs of deterioration from corrosion, physical damage or sagging. Verify air piping and vent piping are intact and correctly installed per this manual.

Installation & Operation Manual

Placing the pool heater in operation

Pool heater operational checks

1.Turn the pool heater main power switch to the “ON” position.

2.Verify operation of the SMART SYSTEM control module and Operator Interface.

3.Program the adjustable points from the Operator Interface.

4.Push the reset for the low water cutoff (if equipped).

5.Ensure that flow requirements and approximate temperature rises shown in Table 4B on page 35 are met. Verify by checking rises while the unit is at 100% of rated input.

6.Install a manometer on the gas supply to the pool heater and verify minimum gas supply pressure as the burner fires at 100% of rated input.

7.Verify operation of safeties as necessary (low water cutoff, high limit, gas pressure, etc.,).

8.Verify that all adjustable points in the Operator Interface are set as required.

9.Once the pool heater analysis is complete, test the safety shutoff device by turning the manual shutoff valve to the OFF position and ensuring that the pool heater shuts down and registers an alarm. Open the manual shutoff valve and reset the control.

10.Place the pool heater back into normal operation.

Pool heater operation

11.The pool heater should begin the start-up process for the sequence of operation.

12.The pool heater will ignite at the proper ignition speed and will stage to meet the system demand.

13.Ensure that inlet water temperature does not fall below the specified minimum for the pool heater.

14.Based on system demand, pool heaters may run for an extended period of time at a reduced rate of input to maximize efficiency.

15.As system demand is satisfied, the burner will cycle off and the combustion air blower will run for a post purge operation before the pool heater shuts down.

Start the pool heater

Read and follow the Lighting Instructions in FIG. 6-2, on page 47.

If pool heater does not start correctly

1.Check for loose connections, blown fuse or service switch off?

2.Is the unit in lockout? Is the pool heater outlet temperature exceeding 200°F (93.3°C)?

3.Is the thermostat set below pool water temperature?

4.Is gas turned on at meter or pool heater?

5.Is incoming gas pressure less than 4.5" water column?

If none of the above corrects the problem, refer to the Troubleshooting Section of the Copper-fin2Service Manual.

￿ WARNING

46

The venting system must be installed so that it will prevent flue gas spillage and carbon monoxide emissions, which will result in severe personal injury or death.

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Contents Installation & Operation Manual Models 502 Save this manual for future referenceContents Special instructions Please read before proceedingRemoval 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 RatingsIndoor clearances from combustible construction Determine unit locationLocation of unit Freeze protectionHydronic systems anti-freeze Outdoor pool heater installationLocation Combustion and ventilation airOutside Combustion Air Using Direct Venting Minimum Recommended Combustion AIR Supply to Equipment RoomExhaust fans Combustion air filterCAT IV Flue pipe materials VentingIdentify your appliance’s vent system CAT I Negative pressure non-condensingVent system options Draft VentingVenting support General informationBarometric damper location Flue outlet piping Conventional negative draft venting seeNegative draft Common Venting SystemsVertical vent termination clearances and location Masonry chimney installationsInspection of a masonry chimney 1Vent Termination from Peaked Roof 10 ft. or Less From Ridge Length of air inlet pipe Vertical DirectAire venting seeCombustion air inlet piping Sidewall air inletCombined air inlet points Vertical Rooftop Air InletClearances Venting of flue products Directaire Kits Model Horizontal KIT Vertical KITSidewall venting termination Sidewall venting seeSidewall with fan Sidewall vent termination clearances and locationDrain tee installation Sidewall venting without fanModels 502 Horizontal DirectAire venting Powered Venting see Venting of flue productsFlue outlet piping Direct venting seeVertical DV venting termination Horizontal Vent Termination Clearances and Location Masonry chimney installationHorizontal DV venting termination Combustion air inlet pipingLength of air inlet pipe Connecting the air inlet pipe to the unitAir inlet piping materials Sealing PVC, CPVC, ABS, dryer vent, and flex duct vent pipeHorizontal combustion air inlet clearances Multiple sidewall direct vent installationsVertical and sidewall combustion air inlet Vertical Combustion Air Inlet ClearancesOutdoor vent/air inlet location Outdoor installation seeOutdoor vent cap kit Gas connection Connecting to gas supplyGas connections Gas pressure testGas train and controls Suggested GAS Pipe Size for Single Unit Installations ModelCombination gas valves Venting of combination gas valvesGAS Piping Size Chart Checking gas supply pressure502 752 Models Water connectionsCirculating pump 992 1442 ModelsMinimum Pump Performance Heat exchangerInitial set-up of maximum water flow 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 Pumped Automatic Bypass Automatic bypass valve cover installationOutdoor operation 3-way valve cover Pump purge pre-running delay Water flow switchPump purge delay Relief valveRemote Wire Connection Way automatic bypass valve wiringWay Automatic Bypass Valve Wiring Electrical connectionsLine voltage connections Installation must comply withPool heater operating control module AMP Draw DataPool supply/limit sensor 4-wire Louver proving switchPool return sensor 2-wire Low voltage connectionsAlarm contacts Wiring of the cascadeStarting the filter system Pre-start checklistStartup Check for gas leaksPlacing the pool heater in operation Check thermostat circuitsCheck vent and air piping Start the pool heater2Operating Instructions Configuration of the cascade Set clockOperating information GeneralPool heater temperature regulation Cascade DAY Switching on SequenceSequence of the cascade Sequence of operation MENU/EXIT Display Screen ENTER/RESET Updown Copper-fin2control moduleUser Access modesInstaller To save parameters and exit programmingStatus display screens Sysrtn Shorted Unit Pump DelaySysrtn Open STG DemandService technician Maintenance Maintenance and annual startupOwner maintenance Inspect appliance area MaintenanceAddress reported problems Inspect appliance interiorCheck relief valve Inspect/replace hot surface igniter Check all wiringCheck control settings Ignition system checkoutPerform start-up and checks Check burner flame Inspect and clean burnerCheck 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.

One of the standout features of Lochinvar 2072,502 is its advanced thermal efficiency. With an impressive AFUE (Annual Fuel Utilization Efficiency) rating, the unit delivers exceptional heat output while minimizing energy consumption. This not only reduces utility bills for homeowners and businesses but also supports sustainability efforts by decreasing carbon footprints.

The Lochinvar 2072,502 incorporates cutting-edge technologies that set it apart in the market. It is equipped with advanced control systems that allow users to precisely manage heating outputs, ensuring optimal comfort while conserving energy. The user-friendly digital display provides real-time data, allowing for efficient monitoring and control.

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The Lochinvar 2072,502 operates silently, making it ideal for installations in areas where noise is a concern. Its compact design allows for flexible installation options, fitting seamlessly into various spaces, whether it’s a utility room, basement, or outdoor area.

Furthermore, the unit supports multiple venting options, accommodating different building architectures and layouts. This versatility makes it an ideal choice for new builds and retrofitting existing systems.

Maintenance is streamlined with the Lochinvar 2072,502, as it features a self-diagnostics system that simplifies troubleshooting. Regular service check-ups are made easier with accessible components, allowing technicians to perform maintenance tasks efficiently.

In summary, the Lochinvar 2072,502 stands out for its high efficiency, advanced technology, durability, and flexible installation options. It is an ideal choice for those seeking a reliable and technologically advanced water-heating solution that meets the challenges of contemporary heating demands while promoting energy savings and environmental responsibility.
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