Lochinvar 45000 Intermittent Pilot Spark Ignition System, Freeze Protection, Water Treatment

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6Start-up

Intermittent Pilot Spark Ignition System

WARNING The ignition module is not repairable. Any modification or repairs will invalidate

the warranty and may create hazardous conditions that result in property damage, personal injury, fire, explosion and/or toxic gases. A faulty ignition module must be replaced with a new module.

Ignition and Control Timings

M9 Intermittent Spark Ignition Pilot Models Pilot Trial for Ignition Period - 90 Seconds

Pilot Failure Response Time - 0.8 Seconds at less than 1.0 µA flame current

Pump Delay Timing (Optional on Boilers) - 30 Seconds after burner shutdown

Freeze Protection

1.For boilers with the pump delay option, 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.

2.Location - Heating boilers must be located in a room having a temperature safely above freezing [32°F(0°C)].

3.Caution - A room where the appliance is installed and operating under a negative pressure may experience a downdraft in the flue of an appliance which is not firing. The cold outside air pulled down the flue may freeze a heat exchanger. This condition must be corrected to provide adequate freeze protection.

4.Freeze protection for a heating boiler or hot water supply boiler using an indirect coil can be provided by using hydronic system antifreeze. Follow the manufacturers instructions. DO NOT use undiluted or automotive type antifreeze.

5.A snow screen should be installed to prevent snow and ice accumulation around the appliance venting system in cold climates.

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Installation & Service Manual

6.Shut-down and Draining - If for any reason, the appliance is to be shut off, the following precautionary measures must be taken:

(a)Shut off gas supply.

(b)Shut off water supply.

(c)Shut off electrical supply.

(d)Drain the unit completely. Remove one threaded plug or bulbwell from the inlet side of the front header and one from the outlet side of the front header on the heat exchanger. Blow all water out of the heat exchanger.

(e)Drain pump and piping.

Freeze Protection for a Heating Boiler System (if required)

1.Use only properly diluted inhibited glycol antifreeze designed for hydronic systems. Inhibited propylene glycol is recommended for systems where incidental contact with drinking water is possible.

CAUTION

DO NOT use undiluted or automotive type

 

antifreeze.

2.A solution of 50% propylene glycol will provide maximum protection of approximately -30°F.

3.Follow the instructions from the glycol antifreeze manufacturer. The quantity of glycol antifreeze required is based on total system volume including expansion tank volume.

4.Glycol is more dense than water and changes the viscosity of the system. The addition of glycol will decrease heat transfer and increase frictional loss in the heating boiler and related piping. A larger pump with more capacity may be required to maintain desired flow rates in a glycol system.

5.Local codes may require a back flow preventer or actual disconnect from city water supply when glycol antifreeze is added to the system.

Water Treatment

In hard water areas, water treatment should be used to reduce the introduction of minerals to the system. Minerals in the water can collect in the heat exchanger tubes and cause noise on operation. Excessive build up of minerals in the heat exchanger can cause a non-warrantable failure.

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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 Venting Conventional Negative Draft Venting SystemVent Pipe Sizes Venting Vertical Vent Termination Clearances Less from Ridge From Parapet WallVent Materials Masonry Chimney InstallationSidewall Venting Negative Draft Fan Assisted VentingAutomatic Vent Damper 7Vent Damper and Vent Damper Terminal BlockGas connections Gas Supply Gas Pressure TestGas Connection Install Piping to Control Gas PipingGas Manifold Pressure Adjustment Procedure 2WrenchChecking Gas Supply Pressure 4Gas Supply PressureCombination Gas Valves Venting of Combination Gas ValvesTwo Stage Burner Control System Water Flow Switch if equipped Water connectionsRelief Valve Minimum Required Flow For Heating Boiler Typical Heating Boiler InstallationsLow Water Cutoff if equipped General Plumbing RulesSystem Temperature Rise Chart Piping of the Boiler SystemHeat Exchanger Pressure Drop Chart Water ConnectionsCirculator Pump Requirements Circulator Pump Specifications Primary/Secondary Boiler PipingCirculator Pump Operation Low Temperature Bypass Requirements Full Flow ApplicationBoiler 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 Electrical connections Terminal Strip WiringBoiler Operating Temperature Control Auxiliary Device Connection to Terminal StripTemperature Adjustment AMP Draw DataMaximum SET Point Determination Maximum Set Point DeterminationOutdoor Air Temperature Sensor Wiring of Remote SensorsInstallation of Remote Sensors Outdoor Air Reset Option Additional Temperature ControlsBlocked Vent and Flame Roll-Out / Flame Interlock Switch 7Blocked Vent Switch LocationInitial Start-up Pre-start ChecklistStart-up Lighting Instructions for Spark Ignition Pilot ModelsSafety Shutoff Test for Spark Ignition Pilot System Operating InstructionsTo Turn Off Gas to Appliance Water Treatment Intermittent Pilot Spark Ignition SystemFreeze Protection Ignition and Control TimingsOwner maintenance Maintenance Maintenance and annual startupService technician See the User’s Information Manual for instructionsMaintenance Check Expansion Tank Check Relief ValveHeat Exchanger / Burner Access Check All WiringCheck Control Settings Perform Start-up and ChecksInspection and Cleaning Breathing Fresh airGas Train and Controls Review with ownerInspection of Heat Exchanger Waterways Water Circulating PumpTroubleshooting Troubleshooting Guide M9 Solution BoilersWiring Diagram M9 Unit 45,000 260,000 Btu/hr Models DiagramsSchematic Diagram M9 Unit 45,000 260,000 Btu/hr Models
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