Lochinvar 502 Installation must comply with, Pool heater operating control module, AMP Draw Data

Page 42

Installation & Operation Manual

5 Electrical connections

Pool heater operating control module

The operating control for the appliance is the SMART SYSTEM control module. It is located on the inside of the control panel, behind the front access door. Access to adjust the temperature set point and other user adjustable points is made through the Operator Interface located on the front access door.

The exact temperature set point is based on the system’s requirements. Set the control set point(s) to the desired operating water temperature.

The maximum temperature set point that can be programmed into the control module from the Operator Interface on a pool heater is 105°F (40.5°C). The manual reset high limit control for a pool heater is adjustable up to a fixed maximum setting of 200°F (93°C).

TABLE - 5C

AMP DRAW DATA

Model

Controls

Blower

Pump

Approximate Total

FLA*

Amps @ 120 VAC

 

 

 

 

 

 

 

 

502

3.6

2.7

5.8

12.1

652

5.4

3.4

5.8

14.6

752

5.4

3.4

5.8

14.6

992

7.3

3.2

7.4

17.9

1262

7.3

3.2

7.4

17.9

1442

7.3

6.7

7.4

21.4

1802

7.3

6.7

8.8

22.8

2072

7.3

6.7

8.8

22.8

*With standard factory supplied pump.

￿CAUTION Label all wires prior to disconnection when servicing controls. Wiring errors can cause

improper and dangerous operation.

Installation must comply with:

1.National Electrical Code and any other national, state, provincial, local codes, or regulations.

2.In Canada, CSA C22.1 Canadian Electrical Code Part 1, and any local codes.

Line voltage connections

1.Connect 120 VAC power wiring to the line voltage terminal strip in the junction box, as shown in FIG. 5-2.

2.Provide and install a fused disconnect or service switch (15 AMP recommended) as required by the code (see FIG. 5-2).

3.To activate the unit, wire as shown in FIG. 5-2. If the motor is larger than 1 HP, you must install a contactor.

4.When connecting power to units which are to be cascaded, each unit must be connected to the same ground connection.

UNIT

 

UNIT PUMP

SUPPLY

SUPPLY

L

N

G

L

N

G

D

 

 

D

 

 

I

 

 

I

 

 

S

 

 

S

 

 

C

 

 

C

 

 

O

 

 

O

 

 

N

 

 

N

 

 

N

 

 

N

 

 

E

 

 

E

 

 

C

 

 

C

 

 

T

 

 

T

 

 

 

 

 

UNIT

 

 

￿WARNING

NOTICE

ELECTRICAL SHOCK HAZARD – For your safety, turn off electrical power supply before making any electrical connections to avoid possible electric shock hazard. Failure to do so can cause severe personal injury or death.

Wiring must be N.E.C. Class 1.

If original wiring as supplied with the pool heater must be replaced, use only type 105°C wire or equivalent.

Pool heater must be electrically grounded as required by National Electrical Code ANSI/ NFPA 70 – latest edition.

 

 

PUMP

 

 

GROUND

 

 

SPLICE

 

 

CHASSIS

 

 

GROUND

L

N

 

 

120V

UNIT

 

PUMP

SUPPLY

1 HP MAX

 

 

Figure 5-2_Line Voltage Field Wiring Connections

42

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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 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 VentingGeneral information Venting supportBarometric damper location Flue outlet piping Conventional negative draft venting seeNegative draft 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 Length of air inlet pipe Vertical DirectAire venting seeCombustion air inlet piping Sidewall air inletVertical Rooftop Air Inlet Combined air inlet pointsClearances 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 productsDirect venting see Flue outlet pipingVertical 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 installation see Outdoor vent/air inlet locationOutdoor 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 Automatic bypass valve cover installation Pumped Automatic BypassOutdoor 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 DAY Switching on Sequence CascadeSequence 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 DemandMaintenance Maintenance and annual startup Service technicianOwner maintenance Inspect appliance area MaintenanceAddress reported problems Inspect appliance interiorCheck relief valve Inspect/replace hot surface igniter Check all wiringCheck control settings 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.

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.

Another significant characteristic of the Lochinvar 2072,502 is its robust stainless-steel construction. This feature enhances the unit's durability and longevity, ensuring reliable performance even in challenging conditions. The high-quality materials also contribute to maintaining consistent water temperatures, which is essential for both residential and commercial heating needs.

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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