Lochinvar 260000, 45000 service manual Piping of the Boiler System, System Temperature Rise Chart

Page 25

Installation & Service Manual

4Water connections (continued)

9.Inspect the liquid level in the expansion tank. The system must be full and under normal operating pressure to ensure proper water level in the expansion tank. Ensure that diaphragm type expansion tanks are properly charged and not water logged.

10.Start the boiler according to the Section 6 - “Start-Up Instructions” in this manual. Operate the system, including the pump, boiler and radiation units, for one hour.

11.Recheck the water level in the expansion tank. If it exceeds half the tank volume, open the tank to reduce the water level. Recheck pressure charge on diaphragm type tanks.

12.Shut down the entire system and vent all radiation units and high points in the system.

13.Close the water makeup valve and check the strainer and pressure reducing valve for sediment or debris. Reopen the water makeup valve.

14.Verify system pressure with the boiler pressure gauge before beginning regular operation.

15.Within three days of start-up, recheck and bleed all air vents and the expansion tank using these instructions.

Piping of the Boiler System

The drawings in this section (see FIG’s 4-7 thru 4-11) show typical heating boiler piping installations. Before beginning the installation, consult local codes for specific plumbing requirements. The installation should provide unions and valves at the inlet and outlet of the boiler so it can be isolated for service. The boiler circulating pump, air separator, expansion tank and other components required for proper installation must be purchased locally. An air separation device must be supplied in the installation piping to eliminate trapped air in the system. Locate a system air vent at the highest point in the system. The system must also have a properly sized expansion tank installed. Typically, an air charged diaphragm-type expansion tank is used. The expansion tank must be installed close to the boiler and on the suction side of the system pump to ensure proper operation.

CAUTION

This boiler system should not be operated at

less than 12 PSIG.

TABLE - 4B

SYSTEM TEMPERATURE RISE CHART

Based on Boiler Output in Btu/hr

 

Btu/hr

 

10°F ￿T

20°F ￿T

30°F ￿T

40°F ￿T

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Input

 

Output

GPM

Ft/hd

GPM

Ft/hd

GPM

Ft/hd

GPM

Ft/hd

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

45,000

 

36,900

7.4

0.6

3.7

0.2

2.5

0.2

1.9

0.2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

75,000

 

61,500

12.3

1.3

6.2

0.4

4.1

0.3

3.1

0.2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

90,000

 

73,800

14.9

1.4

7.4

0.5

5.0

0.3

3.7

0.2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

135,000

 

110,700

22.3

3.2

11.1

1.2

7.4

0.6

5.6

0.3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

180,000

 

147,600

29.7

5.1

14.9

1.6

9.9

0.7

7.4

0.4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

215,000

 

176,300

--

--

17.0

1.3

11.8

0.8

8.9

0.4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

260,000

 

213,200

--

--

21.5

2.1

14.3

0.9

10.7

0.5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

25

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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 ClearancesSidewall Venting Negative Draft Masonry Chimney InstallationVent Materials Fan Assisted Venting7Vent 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 Low Water Cutoff if equipped Typical Heating Boiler InstallationsMinimum Required Flow For Heating Boiler General Plumbing RulesPiping 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 Boiler Operating Temperature Control Terminal Strip WiringElectrical connections Auxiliary Device Connection to Terminal StripAMP 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 SwitchStart-up Pre-start ChecklistInitial Start-up Lighting Instructions for Spark Ignition Pilot ModelsOperating Instructions Safety Shutoff Test for Spark Ignition Pilot SystemTo Turn Off Gas to Appliance Freeze Protection Intermittent Pilot Spark Ignition SystemWater Treatment Ignition and Control TimingsService technician Maintenance Maintenance and annual startupOwner maintenance See the User’s Information Manual for instructionsMaintenance Check Relief Valve Check Expansion TankCheck Control Settings Check All WiringHeat Exchanger / Burner Access Perform Start-up and ChecksBreathing Fresh air Inspection and CleaningInspection of Heat Exchanger Waterways Review with ownerGas Train and Controls Water Circulating PumpTroubleshooting Guide M9 Solution Boilers TroubleshootingSchematic Diagram M9 Unit DiagramsWiring Diagram M9 Unit 45,000 260,000 Btu/hr Models 45,000 260,000 Btu/hr Models
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