Lochinvar 45,000 - 260,000 BTU/HR service manual Automatic Vent Damper

Page 17

Installation & Service Manual

2Venting (continued)

Automatic Vent Damper

This heating boiler is design certified for use with the automatic vent damper (FIG. 15) part number printed on the boiler’s rating plate. A vent damper must be installed on all residential heating boilers with inputs of less than 300,000 Btu/hr to comply with minimum efficiency requirements. A vent damper is factory supplied with residential heating boilers with inputs of 45,000 thru 260,000 Btu/hr.

The vent damper is a useful tool for saving energy when installed inside the living space where air can circulate freely around the appliance. The vent damper will not save as much, if any, energy if it is installed in locations such as:

-Unheated garage

-Attic

-Crawlspace

-Mechanical room that is vented outdoors

For installation and maintenance on the vent damper, refer to the instructions supplied with the vent damper.

Residential heating boilers with inputs of less than 300,000 Btu/hr must have the vent damper properly installed and the vent damper wire harness plugged into the terminal block on the side of the control panel to allow the boiler to function. Larger input heating boilers will have a jumper plug installed in the terminal block to allow operation without a damper. Remove the jumper plug from the terminal block to connect an optional vent damper wire harness. The jumper plug MUST be in place if an optional vent damper is not used on larger input heating boilers.

CAUTION

Do not install the vent damper within 6"

(152 mm) of combustible materials.

Install the vent damper to service only the single appliance for which it is intended. If improperly installed, a hazardous condition such as an explosion or carbon monoxide poisoning could result.

The damper position indicator must be in a visible location with access for service following installation. The damper must be in an open position when appliance main burners are operating.

The part number for the automatic vent damper required on this heating boiler is printed on the rating plate. Vent damper regulations are design certified per the latest edition of ANSI Z21.66.

VENT DAMPER

Figure 2-7_Vent Damper and Vent Damper Terminal Block

WARNING

The vent damper must be installed directly

 

on the flue outlet located on the top of the

 

draft hood (see FIG. 2-7). Do not alter the

 

wire harness supplied with the vent damper.

 

Follow the instructions supplied with the

 

vent damper.

 

An appliance which is shut down or will not

CAUTION

 

operate may experience freezing due to

 

convective air flow down the flue pipe

 

connected to the unit. Proper freeze

 

protection must be provided, see Freeze

 

Protection.

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Contents Models 45,000 260,000 Btu/hr Contents Please read before proceeding WarrantyCodes Ratings Solution Boiler =B=R RatingTemperature and pressure gauge Solution How it worksSolution How it works Solution How it works Location of unit Determine boiler location3Combustion Air Direct from Outside 6Combustion Air from Outside Single Opening Minimum Recommended Combustion AIR Supply to Equipment Room Vent Pipe Sizes VentingConventional Negative Draft Venting System Venting Less from Ridge From Parapet Wall Vertical Vent Termination ClearancesSidewall Venting Negative Draft Masonry Chimney InstallationVent Materials Fan Assisted Venting7Vent Damper and Vent Damper Terminal Block Automatic Vent DamperGas Connection Gas connectionsGas Supply Gas Pressure Test Gas Piping Install Piping to Control2Wrench Gas Manifold Pressure Adjustment Procedure4Gas Supply Pressure Checking Gas Supply PressureTwo Stage Burner Control System Combination Gas ValvesVenting of Combination Gas Valves Relief Valve Water Flow Switch if equippedWater connections Low Water Cutoff if equipped Typical Heating Boiler InstallationsMinimum Required Flow For Heating Boiler General Plumbing RulesPiping of the Boiler System System Temperature Rise ChartCirculator Pump Requirements Heat Exchanger Pressure Drop ChartWater Connections Circulator Pump Operation Circulator Pump SpecificationsPrimary/Secondary Boiler Piping Boiler Flow Rates Low Temperature Bypass RequirementsFull Flow Application Make UP Water Primary / Secondary PipingMake UP Water 6Multiple Boilers Zoned with Circulators From System Full System Flow8Single Boiler Full System Flow with Low Temperature Bypass Boiler Operating Temperature Control Terminal Strip WiringElectrical connections Auxiliary Device Connection to Terminal StripAMP Draw Data Temperature AdjustmentMaximum Set Point Determination Maximum SET Point DeterminationInstallation of Remote Sensors Outdoor Air Temperature SensorWiring of Remote Sensors Additional Temperature Controls Outdoor Air Reset Option7Blocked Vent Switch Location Blocked Vent and Flame Roll-Out / Flame Interlock SwitchStart-up Pre-start ChecklistInitial Start-up Lighting Instructions for Spark Ignition Pilot ModelsTo Turn Off Gas to Appliance Safety Shutoff Test for Spark Ignition Pilot SystemOperating Instructions Freeze Protection Intermittent Pilot Spark Ignition SystemWater Treatment Ignition and Control TimingsService technician Maintenance Maintenance and annual startupOwner maintenance See the User’s Information Manual for instructionsMaintenance Check Relief Valve Check Expansion TankCheck Control Settings Check All WiringHeat Exchanger / Burner Access Perform Start-up and ChecksBreathing Fresh air Inspection and CleaningInspection of Heat Exchanger Waterways Review with ownerGas Train and Controls Water Circulating PumpTroubleshooting Guide M9 Solution Boilers TroubleshootingSchematic Diagram M9 Unit DiagramsWiring Diagram M9 Unit 45,000 260,000 Btu/hr Models 45,000 260,000 Btu/hr ModelsPage Revision a ECO #C03746 initial release SBR-I-S Rev a

45,000 - 260,000 BTU/HR specifications

Lochinvar, a leader in high-efficiency heating solutions, presents the Lochinvar line of boilers, specifically the Lochinvar 45,000 - 260,000 BTU/HR models. These boilers are designed to meet a wide range of heating demands, making them ideal for residential and commercial applications alike.

One of the key features of the Lochinvar boilers is their impressive efficiency rating. Utilizing advanced condensing technology, these units can achieve efficiencies of up to 96% AFUE (Annual Fuel Utilization Efficiency). This high efficiency not only reduces fuel consumption but also lowers utility bills, making it a cost-effective solution for heating needs.

The Lochinvar boilers are equipped with a powerful heat exchanger constructed from durable stainless steel. This design not only maximizes heat transfer but also enhances the longevity of the unit. By preventing corrosion and minimizing maintenance requirements, the stainless steel heat exchanger ensures that the boiler operates at peak performance for years.

Another significant aspect of the Lochinvar boilers is their modulating burner system. This technology allows the boiler to adjust its output based on demand, ensuring that it only uses the energy necessary to maintain the desired temperature. This feature not only improves efficiency but also contributes to a more comfortable indoor environment by minimizing temperature fluctuations.

The Lochinvar series also showcases a user-friendly control interface. The advanced LCD display allows for easy monitoring and adjustment of system settings. Connectivity options are often included, providing the ability to integrate with modern building management systems for enhanced control and diagnostics.

Safety features abound in the Lochinvar models, which include built-in safeguards such as temperature and pressure relief valves, flame detection systems, and modulation cut-off to protect against overheating and other hazardous conditions.

Moreover, these boilers are designed for easy installation and maintenance. Compact dimensions and lightweight design facilitate straightforward setup, even in tight spaces. Additionally, users can take advantage of the unit’s self-diagnostic capabilities to simplify troubleshooting and reduce downtime.

In conclusion, the Lochinvar 45,000 - 260,000 BTU/HR boilers represent a pinnacle of innovation in heating technology. With high efficiency, advanced control systems, durable components, and safety features, they stand out as reliable and effective solutions for a variety of heating applications, ensuring comfort and efficiency in any environment.
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