Lochinvar 260000, 45000 service manual Temperature Adjustment, AMP Draw Data

Page 35

Installation & Service Manual

5Electrical connections (continued)

Pump Wiring for a Heating Boiler

The heating boiler circulating pump must be purchased locally. The maximum load for the pump switched by the

Temperature Adjustment

Operating Temperature Control

internal pump relay must not exceed 1 HP. The current draw for a field installed 120 VAC pump MUST be added to the boiler’s current draw to determine the minimum wire size for 120 volt service.

NOTICE

The temperature controller is pre-set at the factory with test settings. You may need to adjust the settings to meet your specific needs.

TABLE - 5B

AMP DRAW DATA

45,000 thru 260,000 Btu/hr Models

		MAXIMUM
	FIRING CONTROLS	TOTAL AMPS
		@ 120 VAC

	M9 with Performance Loop Pump	1.25

WARNING	Return water temperatures must not be less
WARNING	than 140°F. If lower return water
	temperatures are required, follow the
	instructions for Low Temperature Bypass
	Requirements, see page 28.

Locating Temperature Control

Remove the control panel door on the front of the unit in order to locate and access the temperature control.

IGNITION MODULE

TEMPERATURE CONTROL

MANUAL RESET HIGH LIMIT (IF EQUIPPED)

PUMP RELAY

TRANSFORMER

Temperature Control Settings

Remove the control panel door on the front of the unit in unless your unit is specified as a boiler only with an outdoor air reset option. If your unit is a boiler only with an outdoor air reset option, there are additional controls for this option. They are explained under Outdoor Air Reset Option, page 38.

The three setting knobs on the temperature control are for Set point, Differential, and High-Fire Offset (see FIG. 5-3).

Figure 5-2_Intermittent Pilot System M9 Control Panel

Figure 5-3_Temperature Control

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Image 35

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 ClearancesFan Assisted Venting Masonry Chimney InstallationSidewall Venting Negative Draft Vent Materials7Vent 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 General Plumbing Rules Typical Heating Boiler InstallationsLow Water Cutoff if equipped Minimum Required Flow For Heating BoilerPiping 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 Auxiliary Device Connection to Terminal Strip Terminal Strip WiringBoiler Operating Temperature Control Electrical connectionsAMP 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 SwitchLighting Instructions for Spark Ignition Pilot Models Pre-start ChecklistStart-up Initial Start-upTo Turn Off Gas to Appliance Safety Shutoff Test for Spark Ignition Pilot SystemOperating Instructions Ignition and Control Timings Intermittent Pilot Spark Ignition SystemFreeze Protection Water TreatmentSee the User’s Information Manual for instructions Maintenance Maintenance and annual startupService technician Owner maintenanceMaintenance Check Relief Valve Check Expansion TankPerform Start-up and Checks Check All WiringCheck Control Settings Heat Exchanger / Burner AccessBreathing Fresh air Inspection and CleaningWater Circulating Pump Review with ownerInspection of Heat Exchanger Waterways Gas Train and ControlsTroubleshooting Guide M9 Solution Boilers Troubleshooting45,000 260,000 Btu/hr Models DiagramsSchematic Diagram M9 Unit Wiring Diagram M9 Unit 45,000 260,000 Btu/hr Models