Lochinvar 497 - 2067 service manual Determine unit location, Installation, Locating the unit

Page 10

Installation & Service Manual

1 Determine unit location

Installation

This unit meets the safe lighting performance criteria with the gas manifold and control assembly provided, as specified in the ANSI standards for gas-fired units. ANSI Z21.13/CSA 4.9 and ANSI Z21.10.3/CSA 4.3.

Locating the unit

1.Maintain all clearances from combustible construction when locating unit. See Clearances from Combustible Construction, this page.

2.Locate the unit so that if water connections should leak, water damage will not occur. When such locations

cannot

be avoided, install a

suitable

drain

pan that

is well-drained under

the

unit. The pan must not

restrict

combustion

air

flow.

The

appliance

manufacturer is not responsible for water damage in connection with this unit, or any of its components.

3.Install indoor units so that the ignition system components are protected from any water while operating or during service.

4.Appliances located in a residential garage and in adjacent spaces that open to the garage and are not part of the living space of a dwelling unit must be installed so that all burners and burner ignition devices

have

a

minimum

clearance of

not

less

than

18''

(46cm)

above the

floor.

The

appliance must be located or protected so that

it is

not subject to physical damage by a moving vehicle.

 

5.

DO NOT install this appliance in any location where

 

gasoline or flammable vapors are likely to be present.

6.

The appliance must be installed on a level surface.

7.

Models 497 - 747 are approved for installation on

 

combustible flooring using the approved combustible floor

 

kits (reference Table 1A). Models 987 - 2067 are approved

 

for installation on combustible flooring. Do not install

 

appliances directly on carpeting.

8.

For outdoor models, you must install an optional vent

 

kit. Instructions for mounting the vent kit are included

 

in the venting section. Do not install outdoor models

 

directly on the ground. You must install the outdoor

 

unit on a concrete, brick, block, or other

Indoor clearances from combustible construction

Maintain minimum specified clearances for adequate operation. Allow sufficient space for servicing pipe connections, pump and other auxiliary equipment, as well as the unit. See rating plate for specific service clearance requirements.

Right Side

3'' (7.5 cm)

Rear

3'' (7.5 cm) (3'' min. from any surface)*

Left Side

6'' (15 cm) (24'' (0.61 m) suggested for

 

service)

Front

Alcove* (30'' (0.76m) suggested for service)

Top

3'' (7.5 cm)

Flue

1'' (25.4 mm)

Hot Water Pipes 1'' (25.4 mm)

*An Alcove is a closet without a door. Thirty-six inches (36") to rear required for outdoor installation.

Note: No additional clearance is needed on the right side of the unit for the observation port. An observation port is located on both the right and left side of the unit.

Figure 1-1_Indoor clearances from combustible construction

3"

 

 

 

3"

MIN

 

 

 

 

MIN

REAR

 

 

 

 

TOP

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

non-combustible pad. Outdoor models have additional

special location and clearance requirements. See

Outdoor Installation Venting, page 20. A wind proof

cabinet protects the unit from weather.

6"

MIN

LEFT SIDE

3"

MIN

RIGHT SIDE

30"

MIN FRONT

10

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Contents What to do if YOU Smell GAS Save this manual for future referenceContents Special instructions WarrantyPlease read before proceeding Checking equipmentPrevention of freezing Safety informationOwner warning CodesCopper-fin How it works Copper-fin How it works Models 987 2067 Front View Models 987 2067 Rear View Ratings Copper-fin =B=R RatingCopper-fin Specifications Locating the unit InstallationDetermine unit location Indoor clearances from combustible constructionFreeze protection Outdoor boiler installationShut-down and draining Pump operationMinimum Recommended Combustion AIR Supply to Equipment Room Freeze Protection for a Heating Boiler System if requiredCombustion and Ventilation Air Number3Combustion air filter Models 497 Combustion air filterCombustion Air Options Outside Combustion Air, Using DuctsOutside Combustion Air, No Ducts Exhaust Fans Combustion Air from an Interior SpaceVenting support VentingGeneral information Vertical vent termination clearances and locationBarometric damper location Vent system optionsFlue Pipe Sizes Model Flue Size Flue outlet piping Conventional negative draft ventingNegative draft Common venting systemsMasonry chimney installation Inspection of a masonry chimneyOutdoor installation venting Outdoor vent/air inlet locationOutdoor vent kit Outdoor Vent Kits Model Pump Cover Without Pump CoverGas pressure test Connecting to gas supply Gas pipingGas connections Inlet GAS Pressure Natural ModelGas train and controls Suggested GAS Pipe Size for Single Unit InstallationsGas connection Fittings to Equivalent Straight PipeVenting of combination gas valves GAS Piping Size ChartCombination gas valves Checking gas supply pressureGas manifold pressure adjustment 3Measuring gas supply pressure at combination gas valve4Measuring manifold gas pressure Nat. GasWater connections Water connections heating boilers only Pressure Drop ChartBoiler circulator requirements Low system water volume Minimum boiler water temperaturesRun Cycle Output Minimum System Load Temp. Rise 8.33 60 Min Radiant floor and snow melt heating systems Low temperature return water systemsSystem Temperature Rise Chart LTV Valve Kits Model LTV Valve KITDiameter Common Manifold Size Min Models 497 Number of UnitsGPM Common Manifold Size Min Models 987 Number of Units6Primary/secondary piping of multiple boilers 7Boiler with low temperature bypass 8Primary/secondary piping with buffer tank Boiler flow rate Installation with a chilled water systemTypical heating boiler installations General plumbing rulesFilling the system Temperature / pressure gaugeBoiler bypass requirements Water treatmentAMP Draw Data Connecting to electrical supplyElectrical connections VACBurners Terminal strip connection optionsTemperature control settings Temperature adjustmentLocating the temperature control OJ1 OJ2Outdoor reset option Placement of sensors Temperature control sensorsRemote sensor for pump delay Boiler applicationRemote mounting of a sensor Remote Wire Connection Wire Gauge Max. Allowable LengthHot surface ignition system Hot surface igniter and ignition control moduleDiagnostic Status Indication Ignition and control timingsStage 2 on Operation and diagnostic lightsSequence Constant Ignition SixStartup OFFFill and test water system Freeze protection when usedCheck/control water chemistry Purge air from water systemCheck vent and air piping Check for gas leaksCheck thermostat circuits Start the boilerInitial set-up of maximum water flow Domestic water heatersWater velocity control Maximum Water Flow1Typical water heater piping with storage tank 2Single water heater piping with two storage tanks Common Manifold Size Min Models 497 Number of Units4Multiple water heater piping with multiple storage tanks Pipe size requirements Required temperature risePipe Sizing Chart 497 987 Water chemistryMinimum pump performance Potable hot water temperature control settingsDomestic water temperature Heat exchangerLocation of cold water supply piping connections Thermal expansion High water temperature limit controlOptional relief valve Cathodic protectionMaintenance Combustion and ventilation air Adjustment procedure Models 497 Ignition system checkout Sequence of operationServicing a hot surface igniter and ignition module OverviewHeat transfer process End of sequenceGlossary Igniter Controlled by Ignition Module Pump Delay Electronic Thermostat FunctionTrial for Ignition Ignition Module Function Hi-Lo Fire RelayDiagrams Ladder diagramDiagrams Connection diagram Connection diagram

497 - 2067 specifications

Lochinvar 497 - 2067 is a highly efficient and versatile condensing boiler that is designed to meet the diverse heating needs of residential and commercial applications. Known for its impressive performance and advanced technology, the Lochinvar 497 - 2067 has garnered a reputation as a reliable choice among heating professionals.

One of the standout features of the Lochinvar 497 - 2067 is its impressive thermal efficiency. The boiler boasts an efficiency rating of up to 95% AFUE (Annual Fuel Utilization Efficiency), allowing users to significantly reduce their energy costs while minimizing environmental impact. This efficiency is facilitated by its innovative condensing technology, which captures and reuses heat from exhaust gases for optimal performance.

The Lochinvar 497 - 2067 is equipped with a robust stainless steel heat exchanger designed to handle high temperatures and ensure long-lasting performance. The heat exchanger’s design maximizes heat transfer, while its corrosion-resistant properties guarantee durability over time. This contributes to the boiler's overall longevity and serviceability, reducing the need for frequent replacements.

Control is another critical feature of the Lochinvar 497 - 2067. The boiler comes with an advanced control system that enables easy management of system operations. Users can take advantage of features such as outdoor reset control, which adjusts the temperature of the boiler based on external weather conditions, enhancing system efficiency and comfort.

In terms of safety, the Lochinvar 497 - 2067 incorporates several cutting-edge safety features, including a flame detection system and multiple safety shut-off devices. These safeguards help to ensure the safe operation of the boiler, providing peace of mind to users and heating professionals alike.

Another important characteristic is the compact design of the Lochinvar 497 - 2067, which allows for flexible installation in various settings, including tight spaces. Its lightweight structure further simplifies the installation process, making it a practical choice for contractors.

In summary, the Lochinvar 497 - 2067 is an exceptional high-efficiency condensing boiler that combines advanced technology, durability, and ease of use. With its impressive thermal efficiency, superior heat exchanger design, advanced control systems, and enhanced safety measures, it stands out as a top choice for those seeking reliable heating solutions. This boiler not only meets but exceeds modern demands for energy efficiency and performance, solidifying its position in the market.
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