Lochinvar 45,000 - 260,000 BTU/HR service manual Initial Start-up, Pre-start Checklist

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Installation & Service Manual

6Start-up

Initial Start-up

Follow the Lighting Instructions on the label applied to the appliance.

A.On boilers with the system pump delay option, the operating temperature control will energize the pump relay which energizes the pump on a call for heat. The operating temperature control will de- energize the pump relay approximately 30 seconds after the call for heat ends. If either the inlet sensor or the optional multi-purpose temperature sensor reads below 40°F, the pump relay will turn ON. When the temperature rises above 50°F the pump relay will turn OFF.

On boilers, the pump will operate whenever the “W” terminal is energized.

B.Location - The appliance should be located within a room having a temperature safely above freezing [32°F(0°C)].

C.Shutdown and Draining - If, for any reason, the appliance is shut off, the following precautionary measures must be taken:

1.Shut off gas supply,

2.Shut off water supply.

3.Shut off electrical supply.

4.Drain the heat exchanger completely. Remove one 3/8" NPT plug or bulbwell from the inlet side and one from the outlet side of the front header of the heat exchanger.

5.Drain the pump. Remove the 3/4" plug in the performance loop.

Pre-start Checklist

1.Inspect the burners to be sure they are properly aligned.

2.Inspect the pilot gas line, thermocouple leads, ignition leads and wire connections to the gas valve to be sure none were damaged during shipment.

3.Check to ensure that gas connections have been made properly and the gas line is purged of air.

4.Check to ensure that water connections are tight and the appliance and piping system have been properly filled.

5.Ensure that discharge from the relief valve has been piped to a floor drain.

6.Verify that properly sized combustion and ventilation air openings are provided and not obstructed in any way.

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7.Check carefully for gas leaks.

8.Read the appliance’s safety warnings, lighting instructions and check out procedure carefully, before firing the system.

Lighting Instructions for Spark Ignition Pilot Models

FOR YOUR SAFETY READ BEFORE

OPERATING

WARNING If you do not follow these instructions exactly, a fire or explosion may result

causing property damage, personal injury or loss of life.

A.This appliance is equipped with an ignition device which automatically lights the pilot. Do not try to light the pilot by hand.

B.BEFORE OPERATING, smell around the appliance area for gas. Be sure to smell next to the floor because some gas is heavier than air and will settle to the floor.

WHAT TO DO IF YOU SMELL GAS

Do not try to light any appliance.

Do not touch any electric switch; do not use any phone in your building.

Immediately call your gas supplier from a near by phone. Follow the gas supplier’s instructions.

If you cannot reach your gas supplier, call the fire department.

C. Use only your hand to turn the gas control knob. Never use tools. If the knob will not turn by hand, don’t try to repair it, call a qualified service technician. Force or attempted repair may result in a fire or explosion.

D.Do not use this appliance if any part has been under water. Immediately call a qualified service technician to inspect the appliance. The possible damage to a flooded appliance can be extensive and present numerous safety hazards. Any appliance that has been under water must be replaced.

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Contents Models 45,000 260,000 Btu/hr Contents Warranty Please read before proceedingCodes Solution Boiler =B=R Rating RatingsSolution How it works Temperature and pressure gaugeSolution How it works Solution How it works Determine boiler location Location of unit3Combustion Air Direct from Outside 6Combustion Air from Outside Single Opening Minimum Recommended Combustion AIR Supply to Equipment Room Conventional Negative Draft Venting System VentingVent Pipe Sizes Venting Vertical Vent Termination Clearances Less from Ridge From Parapet WallMasonry Chimney Installation Sidewall Venting Negative DraftVent Materials Fan Assisted VentingAutomatic Vent Damper 7Vent Damper and Vent Damper Terminal BlockGas Supply Gas Pressure Test Gas connectionsGas Connection Install Piping to Control Gas PipingGas Manifold Pressure Adjustment Procedure 2WrenchChecking Gas Supply Pressure 4Gas Supply PressureVenting of Combination Gas Valves Combination Gas ValvesTwo Stage Burner Control System Water connections Water Flow Switch if equippedRelief Valve Typical Heating Boiler Installations Low Water Cutoff if equippedMinimum Required Flow For Heating Boiler General Plumbing RulesSystem Temperature Rise Chart Piping of the Boiler SystemWater Connections Heat Exchanger Pressure Drop ChartCirculator Pump Requirements Primary/Secondary Boiler Piping Circulator Pump SpecificationsCirculator Pump Operation Full Flow Application Low Temperature Bypass RequirementsBoiler Flow Rates Primary / Secondary Piping Make UP WaterMake UP Water 6Multiple Boilers Zoned with Circulators Full System Flow From System8Single Boiler Full System Flow with Low Temperature Bypass Terminal Strip Wiring Boiler Operating Temperature ControlElectrical connections Auxiliary Device Connection to Terminal StripTemperature Adjustment AMP Draw DataMaximum SET Point Determination Maximum Set Point DeterminationWiring of Remote Sensors Outdoor Air Temperature SensorInstallation of Remote Sensors Outdoor Air Reset Option Additional Temperature ControlsBlocked Vent and Flame Roll-Out / Flame Interlock Switch 7Blocked Vent Switch LocationPre-start Checklist Start-upInitial Start-up Lighting Instructions for Spark Ignition Pilot ModelsOperating Instructions Safety Shutoff Test for Spark Ignition Pilot SystemTo Turn Off Gas to Appliance Intermittent Pilot Spark Ignition System Freeze ProtectionWater Treatment Ignition and Control TimingsMaintenance Maintenance and annual startup Service technicianOwner maintenance See the User’s Information Manual for instructionsMaintenance Check Expansion Tank Check Relief ValveCheck All Wiring Check Control SettingsHeat Exchanger / Burner Access Perform Start-up and ChecksInspection and Cleaning Breathing Fresh airReview with owner Inspection of Heat Exchanger WaterwaysGas Train and Controls Water Circulating PumpTroubleshooting Troubleshooting Guide M9 Solution BoilersDiagrams Schematic Diagram M9 UnitWiring 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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