Lochinvar 3.5, 2.5 service manual Determine boiler location, Installation must comply with

Page 7

Installation & Operation Manual

1 Determine boiler location

Installation must comply with:

 

 

This appliance is certified as an indoor appliance.

￿ WARNING

 

 

 

 

Do not install the appliance

outdoors or locate

•

Local, state, provincial, and national codes, laws,

 

 

 

where the appliance will be exposed to freezing

 

regulations, and ordinances.

 

 

 

 

 

temperatures or to temperatures that exceed 100°F

• National Fuel Gas Code, NFPA 54 / ANSI Z223.1 –

 

 

 

 

(37.8°C).

 

 

latest edition.

 

 

 

 

 

 

 

 

Do not install the appliance where the relative

•

Standard for Controls and Safety Devices for

 

 

 

Automatically Fired Boilers, ANSI/ASME CSD-1 -

 

 

humidity may exceed 93%.

Do not install the

 

latest edition, when required.

 

 

appliance where condensation may form on

• National Electrical Code, NFPA 70 - latest edition.

 

 

the inside or outside of the appliance, or where

•

For Canada only: CSA B149.1 Installation Code,

 

 

condensation may fall onto the appliance.

 

CSA C22.1 Canadian Electrical Code Part 1 and any

 

 

Failure to install the appliance indoors could result

 

local codes.

 

 

 

in severe personal injury, death, or substantial

 

NOTICE

The Crest gas manifold and

 

 

property damage.

 

 

 

 

 

 

 

controls met safe lighting and other

￿ WARNING

 

This appliance requires a special venting system.

 

 

 

 

 

performance criteria when the boiler

 

Use only the vent materials specified in this

 

 

 

 

 

 

underwent tests specified in ANSI

 

 

manual. Failure to follow all instructions can

 

 

Z21.13/CSA 4.9 – latest edition.

 

 

result in flue gas spillage and carbon monoxide

 

 

 

 

 

emissions, causing severe personal injury or death.

Before locating the boiler, check:

Provide clearances:

 

1.Check for nearby connection to:

•System water piping

•Venting connections

•Gas supply piping

•Electrical power

2.Locate the appliance so that if water connections should leak, water damage will not occur. When such locations cannot be avoided, it is recommended that a suitable drain pan, adequately drained, be installed under the appliance. The pan must not restrict combustion air flow. Under no circumstances is the manufacturer to be held responsible for water damage in connection with this appliance, or any of its components.

3.Check area around the boiler. Remove any combustible materials, gasoline and other flammable liquids.

Failure to keep boiler area clear ￿ WARNING and free of combustible materials,

If you do not provide the recommended service NOTICE clearances shown, it may not be possible to service

the boiler without removing it from the space.

Clearances from combustible materials

-

Hot water pipes

........................................................ 1/4"

-

Sides

0"

-

Rear

0"

-

Front

0"

-

Top

0"

-

Floor

Combustible

-Vent pipe - Follow special vent system manufacturer’s instructions

Recommended clearances for service access

-

Sides

24"

-

Rear

24"

-

Front

30"

-

Top

24"

Figure 1-1Recommended Service Clearances

1/4" (6 MM) MINIMUM CLEARANCE AROUND HOT WATER PIPES

gasoline, and other flammable liquids and vapors can result in severe personal injury, death, or substantial property damage.

4. The Crest must be installed so that gas control system components are protected from dripping or spraying water or rain during operation or service.

5. If a new boiler will replace an existing boiler, check for and correct system problems, such as:

• System leaks causing oxygen corrosion or heat exchanger cracks from hard water deposits.

• Incorrectly-sized expansion tank.

• Lack of freeze protection in boiler water causing system and boiler to freeze and leak.

6. The appliance must be installed on a level floor, both front to back and side to side, for proper condensate drainage.

24"

LEFT

24"

REAR

30"

FRONT

24"

TOP

VENTILATING*

AIR OPENING

CLOSED DOOR

24"

RIGHT

VENTILATING*

AIR OPENING

7. If the optional neutralizing kit is to be used, elevate

the boiler at least 3" above the floor.

7

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Contents Save this manual for future reference Contents Please read before proceeding When servicing boilerBlowers Crest How it worksCrest How it works Models 1.5 2.0 2.5 3.0 Crest Ahri Rating RatingsBefore locating the boiler, check Installation must comply withRecommended clearances for service access Determine boiler locationPrevent combustion air contamination Provide air openings to roomFlooring and foundation Vent and air pipingProducts to avoid When using an existing vent system to install a new boilerAreas likely to have contaminants When removing a boiler from existing common vent system Remove boiler from wood pallet 7Combustion Air from Outside Single Opening Minimum Recommended Combustion AIR Supply to Equipment Room Direct venting General ventingOptional room air Air inlet pipe materials Install vent and combustion air pipingAir intake/vent connections Approved Stainless Steel Vent Manufacturers Make ModelRemoving from existing vent Common venting Prepare roof penetrations Vertical direct ventingVent/air termination vertical Determine location4Alternate Vertical Terminations with Multiple Boilers Multiple vent/air terminationsVent/air termination sidewall Sidewall direct venting2Clearance to Doors and Windows Prepare wall penetrations4Multiple Vent Terminations must also comply with Figure Room airHydronic piping Model Circulator sizing20F 40F 60F Near boiler piping components Ball Valve Multiple Boilers Common Header Primary / Secondary Flow For all equipment and detailing required by local codes AIR Seperator Drain Port Typical System Supply Sensor Gas connections Connecting gas supply pipingModel Gas Inlet Size Propane Gas Natural gasCheck inlet gas supply GAS Piping Size ChartGas Pressure Gas valve replacementInstallation must comply with Field wiringLine voltage connections Low voltage connections EnableOutdoor temperature sensor Louver proving switchSystem supply sensor Auxiliary switch 1Alarm contacts Wiring of the cascadeField WiringCondensate drain Condensate disposalFill and test water system Freeze protection when usedStart-up Check/control water chemistryInspect/check condensate lines and fittings Check for gas leaksCheck thermostat circuits Inspect condensate systemCheck system and boiler Final checks before starting the boilerStart the boiler If boiler does not start correctlyFor Your Safety Read Before Operating Gas Natural Gas Propane Valve Set space heating operationConfiguration of the cascade Verify HWG circulator mode Set HWG target temperatureSet clock General Operating informationProtection features Outdoor reset operation, if used Boiler temperature regulationCascade Sequence of operation Home Screen Crest control module2Main Menu Screen See the Crest User’s Information Manual for Instructions Maintenance Maintenance and annual startupService technician Owner maintenanceMaintenance Check boiler relief valve Flue vent system and air pipingCheck water system Check expansion tankCheck flame signal Check ignition ground wiringCheck all boiler wiring Check control settingsNiosh stated First Aid Cleaning boiler heat exchangerReview with owner Handling ceramic fiber materialsIntegrated Control Diagrams2Wiring Diagram
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3, 2, 3.5, 2.5 specifications

The Lochinvar 2, 3, 3.5, and 2.5 models are a standout lineup in the realm of commercial and residential water heating solutions. Known for their advanced technology and high efficiency, these units cater to a wide range of applications, ensuring optimal performance and reliability.

One of the key features of the Lochinvar models is their robust construction. Each unit is designed to withstand rigorous operational demands while providing excellent thermal efficiency. They are equipped with stainless steel heat exchangers, which offer superior resistance to corrosion and extend the lifespan of the equipment. This durability is essential for both commercial and residential settings where demand can vary significantly.

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Additionally, the Lochinvar models are designed with safety and reliability in mind. They feature multiple safety controls and diagnostics that alert users to potential issues before they escalate, providing peace of mind. The integration of advanced venting options allows for flexible installation configurations, accommodating various building layouts and space requirements.

In summary, the Lochinvar 2, 3, 3.5, and 2.5 models define modern water heating technology with their combination of durability, efficiency, and advanced features. With their innovative design and user-friendly controls, they meet the demanding needs of both commercial and residential users, making them a top choice in the water heater market. Whether for new installations or replacements, these units deliver reliable performance and value.
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