Lochinvar 2072, 502 operation manual Pumped Automatic Bypass, Outdoor operation 3-way valve cover

Page 39

4 Water connections (continued)

Pumped Automatic Bypass

This is a high efficiency pool heater which requires a special pumped bypass for proper operation. The bypass assembly supplied with the pool heater includes a pump and a 3-way mixing valve. All piping to connect the filter system to the pool heater is made directly to the bypass piping on the pool heater.

Installation & Operation Manual

Note: The actuator handle is not used when the outdoor cover is installed. The handle is attached to the underside of the actuator for storage.

Figure 4-8_3 Way Valve Cover Connection Diagram

Outdoor operation: 3-way valve cover

If the pool heater is to be installed outdoors, the 3-way valve must be protected from the elements. A cover for the 3-way valve is included with the outdoor vent kits for all models (see Table 2F on page 30).

Automatic bypass valve cover installation:

*

FIELD CONNECTIONS

*NOTE: Refer to the numbers located next to the terminals when making wiring connections.

RTO TERMINAL #5

BK

 

TO TERMINAL #6

 

OTO TERMINAL #7

BL TO TERMINAL #19

LOW VOLTAGE BOARD FACTORY CONNECTIONS

The pump supplied on the pool heater bypass has a sealed motor suitable for outdoor installations. When installing the 3-way automatic bypass valve outdoors, an outdoor valve cover is required. An outdoor valve cover is supplied with an optional outdoor vent kit (see Table-2D, page 25 of this manual).

To install the outdoor valve cover, follow the steps below:

1.Turn off power to the unit.

2.Remove the plastic actuator cover from the 3-way automatic bypass valve by loosening the screw above the conduit fitting (FIG. 4-9).

3.Grasp the cover on the screw side and lift the cover up and away from the valve.

4.Disconnect the wires at the terminal block (if connected).

5.Unscrew the plastic conduit cap from the conduit fitting (FIG. 4-9) and pull the plastic conduit hose and wires from the valve.

6.Feed the plastic conduit hose through the opening of the valve cover end cap (JKD6654) (see FIG. 4-9) and slide the end cap approximately one foot up the conduit.

7.Reconnect the wires to the 3-way valve circuit board as shown in FIG. 4-8.

8.Feed the conduit hose into the conduit fitting and reinstall the conduit cap.

Note: If the wing nut underneath the valve actuator body is loose, retighten.

9.Reinstall the plastic actuator cover and secure with the screw loosened in Step 2.

10.Place the valve cover (JKD6652) over the 3-way automatic bypass valve. Install the end caps (JKD6653 and JKD6654) using the four screws provided in the kit (BLT7901) as shown in FIG. 4-9.

11.Turn the power on to the unit and resume operation.

Figure 4-9_3 Way Valve Cover

END CAP (JKD6654)

VALVE COVER (JKD6652)

PLASTIC

ACTUATOR

COVER

END CAP (JKD6653)

INSTALLED VIEW

EXPLODED VIEW

Manual operation of the 3-way automatic bypass valve actuator

To manually operate the 3-way automatic bypass valve actuator:

1.Power must be removed from the unit.

2.Once power is removed, the de-clutch button located on the side of the valve actuator body can be pressed.

CAUTION Failure to remove power from the actuator prior to attempting

to manually operate the valve can result in irreparable damage to the actuator mechanism.

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Contents Save this manual for future reference Installation & Operation Manual Models 502Contents Please read before proceeding Special instructionsRemoval of Combustion Chamber Lining or Base Panels Owner warning Safety informationCopper-fin2- How it works Copper-fin2- How it works Copper-fin2- How it works Ratings SpecificationsFreeze protection Determine unit locationLocation of unit Indoor clearances from combustible constructionCombustion and ventilation air Outdoor pool heater installationLocation Hydronic systems anti-freezeMinimum Recommended Combustion AIR Supply to Equipment Room Outside Combustion Air Using Direct VentingCombustion air filter Exhaust fansCAT I Negative pressure non-condensing VentingIdentify your appliance’s vent system CAT IV Flue pipe materialsDraft Venting Vent system optionsGeneral information Venting supportBarometric damper location Common Venting Systems Conventional negative draft venting seeNegative draft Flue outlet pipingMasonry chimney installations Vertical vent termination clearances and locationInspection of a masonry chimney 1Vent Termination from Peaked Roof 10 ft. or Less From Ridge Sidewall air inlet Vertical DirectAire venting seeCombustion air inlet piping Length of air inlet pipeVertical Rooftop Air Inlet Combined air inlet pointsClearances Directaire Kits Model Horizontal KIT Vertical KIT Venting of flue productsSidewall vent termination clearances and location Sidewall venting seeSidewall with fan Sidewall venting terminationSidewall venting without fan Drain tee installationModels 502 Venting of flue products Horizontal DirectAire venting Powered Venting seeDirect venting see Flue outlet pipingVertical DV venting termination Combustion air inlet piping Masonry chimney installationHorizontal DV venting termination Horizontal Vent Termination Clearances and LocationSealing PVC, CPVC, ABS, dryer vent, and flex duct vent pipe Connecting the air inlet pipe to the unitAir inlet piping materials Length of air inlet pipeVertical Combustion Air Inlet Clearances Multiple sidewall direct vent installationsVertical and sidewall combustion air inlet Horizontal combustion air inlet clearancesOutdoor installation see Outdoor vent/air inlet locationOutdoor vent cap kit Gas pressure test Connecting to gas supplyGas connections Gas connectionVenting of combination gas valves Suggested GAS Pipe Size for Single Unit Installations ModelCombination gas valves Gas train and controlsChecking gas supply pressure GAS Piping Size Chart992 1442 Models Water connectionsCirculating pump 502 752 ModelsAuxiliary Mixed Water Limit Control Heat exchangerInitial set-up of maximum water flow Minimum Pump Performance3Heater 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 Relief valve Water flow switchPump purge delay Pump purge pre-running delayElectrical connections Way automatic bypass valve wiringWay Automatic Bypass Valve Wiring Remote Wire ConnectionAMP Draw Data Installation must comply withPool heater operating control module Line voltage connectionsLow voltage connections Louver proving switchPool return sensor 2-wire Pool supply/limit sensor 4-wireWiring of the cascade Alarm contactsCheck for gas leaks Pre-start checklistStartup Starting the filter systemStart the pool heater Check thermostat circuitsCheck vent and air piping Placing the pool heater in operation2Operating Instructions Set clock Configuration of the cascadeGeneral Operating informationPool heater temperature regulation DAY Switching on Sequence CascadeSequence of the cascade Sequence of operation Copper-fin2control module MENU/EXIT Display Screen ENTER/RESET UpdownTo save parameters and exit programming Access modesInstaller UserStatus display screens STG Demand Unit Pump DelaySysrtn Open Sysrtn ShortedMaintenance Maintenance and annual startup Service technicianOwner maintenance Inspect appliance interior MaintenanceAddress reported problems Inspect appliance areaIgnition system checkout Check all wiringCheck control settings Check relief valve Inspect/replace hot surface igniterInspect and clean burner Perform start-up and checks Check burner flameCheck flue gas passageways Oiled bearing circulators Review with ownerDigital Harness Connection diagramController LOW Voltage Ladder diagramRuntime 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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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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