Lochinvar 260000, 45000 specs

Installation & Service Manual

4Water connections (continued)

Full System Flow

Figure 4-8_Single Boiler Full System Flow with Low Temperature Bypass

BACKFLOW PREVENTER

PRESSURE

REDUCING VALVE

PRESSURE

GAUGE

MAKE UP WATER
SYSTEM SUPPLY	AIR
SENSOR	SEPARATOR
SYSTEM
CIRCULATOR	FROM
	FROM
TO	SYSTEM
SYSTEM
BALL VALVE
(TYPICAL)	3-WAY VALVE W/BYPASS PIPE
	3-WAY VALVE W/BYPASS PIPE
EXPANSION
TANK
	BOILER
	CIRCULATOR

Y-STRAINER

(RECOMMENDED)

UNION (TYPICAL)

TEMPERATURE / PRESSURE

GAUGEDRAIN

PRESSURE

RELIEF VALVE

SOLUTION

BOILER

33

Image 33

Lochinvar 260000, 45000 service manual 8Single Boiler Full System Flow with Low Temperature Bypass

Contents

Models 45,000 260,000 Btu/hr Contents Please read before proceeding Warranty Codes Ratings Solution Boiler =B=R Rating Temperature and pressure gauge Solution How it works Solution How it works Solution How it works Location of unit Determine boiler location 3Combustion 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 Less from Ridge From Parapet Wall Vertical Vent Termination Clearances Sidewall Venting Negative Draft Masonry Chimney InstallationVent Materials Fan Assisted Venting 7Vent Damper and Vent Damper Terminal Block Automatic Vent Damper Gas connections Gas Supply Gas Pressure TestGas Connection Gas Piping Install Piping to Control 2Wrench Gas Manifold Pressure Adjustment Procedure 4Gas Supply Pressure Checking Gas Supply Pressure Combination Gas Valves Venting of Combination Gas ValvesTwo Stage Burner Control System Water Flow Switch if equipped Water connectionsRelief Valve Low Water Cutoff if equipped Typical Heating Boiler InstallationsMinimum Required Flow For Heating Boiler General Plumbing Rules Piping of the Boiler System System Temperature Rise Chart Heat 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 Make UP Water Primary / Secondary Piping Make UP Water 6Multiple Boilers Zoned with Circulators From System Full System Flow 8Single Boiler Full System Flow with Low Temperature Bypass Boiler Operating Temperature Control Terminal Strip WiringElectrical connections Auxiliary Device Connection to Terminal Strip AMP Draw Data Temperature Adjustment Maximum Set Point Determination Maximum SET Point Determination Outdoor Air Temperature Sensor Wiring of Remote SensorsInstallation of Remote Sensors Additional Temperature Controls Outdoor Air Reset Option 7Blocked Vent Switch Location Blocked Vent and Flame Roll-Out / Flame Interlock Switch Start-up Pre-start ChecklistInitial Start-up Lighting Instructions for Spark Ignition Pilot Models Safety Shutoff Test for Spark Ignition Pilot System Operating InstructionsTo Turn Off Gas to Appliance Freeze Protection Intermittent Pilot Spark Ignition SystemWater Treatment Ignition and Control Timings Service technician Maintenance Maintenance and annual startupOwner maintenance See the User’s Information Manual for instructions Maintenance Check Relief Valve Check Expansion Tank Check Control Settings Check All WiringHeat Exchanger / Burner Access Perform Start-up and Checks Breathing Fresh air Inspection and Cleaning Inspection of Heat Exchanger Waterways Review with ownerGas Train and Controls Water Circulating Pump Troubleshooting Guide M9 Solution Boilers Troubleshooting Schematic Diagram M9 Unit DiagramsWiring Diagram M9 Unit 45,000 260,000 Btu/hr Models 45,000 260,000 Btu/hr Models