Lochinvar 2072 Water connections, Circulating pump, 502 752 Models, 992 1442 Models

Page 34

Installation & Operation Manual

4 Water connections

Install piping from the filter system to the pool heater as shown in the pool heater piping diagrams. See Figures 34 - 38. Minimum pipe diameter to and from the installed pool heater to the filter system piping on models 502 - 752 is 2" and on models 992 - 2072 Btu/hr the minimum is 2-1/2". The piping from the filter system to the pool heater may be PVC, CPVC or Copper Pipe. The piping from the pool heater back to the filter system will carry water with temperatures in excess of 110°F and must be CPVC or Copper Pipe. The temperature of the heated water from the pool heater will be substantially cooled as it is mixed back into the pool water from the filter system and returned to the pool. The mix of heated water and pool water from the filtration system should only be slightly warmer than the pool water before the connections from the pool heater.

 

2" NPT

 

WATER

2" NPT

INLET

WATER

 

OUTLET

 

INSPECTION

PLUGS

Figure 4-1_Water Connections - Models 502 - 752

2-1/2" NPT

WATER

INLET

2-1/2" NPT

WATER

OUTLET

INSPECTION

PLUGS

TABLE - 4A

Pipe Sizing Chart

502 - 752 Models

Common Pipe Size

Number of units

(Min.)

1

2"

2

3"

 

 

3

3 1/2"

 

 

4

4"

 

 

5

5"

 

 

6

5"

 

 

992 - 2072 Models

Common Pipe Size

Number of units

(Min.)

1

2 1/2"

 

 

2

4"

 

 

3

4"

 

 

4

5"

 

 

5

6"

 

 

6

6"

 

 

Circulating pump

1.This pool heater is factory supplied with a properly sized pump that circulates water between the pool heater and system.

2.The pump is sized to pool heater input and water hardness. See Water Chemistry on page 45.

3.Lubricate the pump to the manufacturer’s recommendations. Pump damage due to inadequate lubrication is non-warrantable. Use SAE 30 non-detergent oil or lubricant specified by the pump manufacturer.

4.Standard pool heaters are furnished with the following circulating pump mounted in the factory supplied pool loop.

502 - 752 Models

1/4 HP, 120 VAC, 5.8 Amp

992 - 1442 Models

1/2 HP, 120 VAC, 7.4 Amp

1802 - 2072 Models

3/4 HP, 120 VAC, 8.8 Amp

Figure 4-2_Water Connections - Models 992 - 2072

This pump is sized based on installation of a single pool heater

 

 

 

 

 

 

 

 

in close proximity with the system. If the number of fittings and

 

 

 

 

straight pipe exceeds the quantities shown in this section, a larger

 

 

 

 

pump will be required. As an alternative to changing the pump

 

 

 

 

in these circumstances, the piping can be changed to a sub-loop.

 

 

 

 

Check pump for correct pump rotation.

 

34

 

 

The standard pump selection is based on the following pipe and

 

 

 

fittings from the pool heater to the system:

 

 

Page 33 Page 35
Image 34
Page 33 Page 35
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.

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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