Lochinvar 260000, 45000 service manual 6Multiple Boilers Zoned with Circulators

Page 31

Installation & Service Manual

4Water connections (continued)

Primary / Secondary Piping

Figure 4-6_Multiple Boilers Zoned with Circulators

		ZONE #1
PRESSURE		PRESSURE
REDUCING VALVE		GAUGE
BACKFLOW
PREVENTER
MAKE UP WATER	SYSTEM SUPPLY
		SENSOR
		(WHEN USED)
AIR SEPARATOR

NOT TO EXCEED 12" APART

	BALL VALVE	EXPANSION
	(TYPICAL)
		TANK

ZONE CIRCULATORS

(TYPICAL)

ZONE #2 ZONE #3 ZONE #4

DRAIN POINT	MAY SUBSTITUTE LOW LOSS HEADER
DRAIN POINT			HOT
(TYPICAL)			HOT
(TYPICAL)			WATER
			WATER
			OUT
			ANTI-SCALD
			MIXING VALVE
		FLOW CHECK	COLD
	BOILER	VALVE	COLD
	BOILER	VALVE	WATER
	CIRCULATOR		WATER
	CIRCULATOR		IN
			IN
	Y-STRAINER	RELIEF VALVE
	(RECOMMENDED)	RELIEF VALVE
	(RECOMMENDED)
			RECIRCULATION
			LOOP
			AQUASTAT
UNION
(TYPICAL)
TEMPERATURE /
PRESSURE
GAUGE
PRESSURE	BOILER 2	BOILER 1	INDIRECT
RELIEF VALVE	BOILER 2	BOILER 1	INDIRECT
	(LEADER 1)	(LEADER)	DHW TANK

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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 Conventional Negative Draft Venting System VentingVent Pipe Sizes 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 Supply Gas Pressure Test Gas connectionsGas Connection Gas Piping Install Piping to Control2Wrench Gas Manifold Pressure Adjustment Procedure4Gas Supply Pressure Checking Gas Supply PressureVenting of Combination Gas Valves Combination Gas ValvesTwo Stage Burner Control System Water connections Water Flow Switch if equippedRelief Valve General Plumbing Rules Typical Heating Boiler InstallationsLow Water Cutoff if equipped Minimum Required Flow For Heating BoilerPiping of the Boiler System System Temperature Rise ChartWater 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 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 DeterminationWiring of Remote Sensors Outdoor Air Temperature SensorInstallation 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-upOperating Instructions Safety Shutoff Test for Spark Ignition Pilot SystemTo Turn Off Gas to Appliance 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