Hydronic Heating Boilers and Domestic Water Heaters

Table of Contents

General Product Information . . . . . . . . . . . . . . . . . . . . . . . . .3 Special Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Product Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Locating Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Clearances from Combustible Construction . . . . . . . . . .6 Base for Combustible Floors . . . . . . . . . . . . . . . . . . . . .6 Freeze Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Pump Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Hydronic System Antifreeze . . . . . . . . . . . . . . . . . . . . . .7 Outdoor Boiler Installation . . . . . . . . . . . . . . . . . . . . . . .7 Shutdown and Draining . . . . . . . . . . . . . . . . . . . . . . . . .7 Freeze Protection for a Heating Boiler System . . . . . . . . . . .8 Combustion and Ventilation Air . . . . . . . . . . . . . . . . . . .8 Combustion Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . .8 Combustion Air Options . . . . . . . . . . . . . . . . . . . . . . . . .9 Exhaust Fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 Venting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 General Information . . . . . . . . . . . . . . . . . . . . . . . . . . .10 Venting Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 Vertical Vent Termination Clearances and Location . .10 Vent System Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 Barometric Damper Location . . . . . . . . . . . . . . . . . . . .12 1. Conventional Negative Draft Venting . . . . . . . . . . .13

2. Outdoor Installation Venting . . . . . . . . . . . . . . . . . .14 Connecting to Gas Supply . . . . . . . . . . . . . . . . . . . . . . . . . .16 Gas Pressure Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 Gas Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 Connecting Gas Piping to Unit . . . . . . . . . . . . . . . . . . .17 Gas Train and Controls . . . . . . . . . . . . . . . . . . . . . . . . .17 Combination Gas Valves . . . . . . . . . . . . . . . . . . . . . . .18 Venting of Combination Gas Valves . . . . . . . . . . . . . .18 Checking Gas Supply Pressure . . . . . . . . . . . . . . . . . . .18 Gas Manifold Pressure Adjustment . . . . . . . . . . . . . . .19 Connecting to Water Supply . . . . . . . . . . . . . . . . . . . . . . . . .20 Inlet and Outlet Connections . . . . . . . . . . . . . . . . . . . .20 Relief Valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 Water Flow Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 Low Water Cutoff . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21 Connecting to Electrical Supply . . . . . . . . . . . . . . . . . . . . . .21 Terminal Strip Connection Options . . . . . . . . . . . . . . .22 Boiler System Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23 Primary/Secondary Boiler Piping . . . . . . . . . . . . . . . . .24

Low Temperature Return Water Systems . . . . . . . . . . .25

Radiant Floor and Snow Melt Heating Systems . . . . . .25

Table of Contents

Installation with a Chilled Water System . . . . . . . . . . .26 Boiler Flow Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27 Boiler Bypass Requirements . . . . . . . . . . . . . . . . . . . . .27 Temperature/Pressure Gauge . . . . . . . . . . . . . . . . . . . . .27 Filling the System . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27

Water Treatment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Lighting Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . .28

To Turn Off Gas To Appliance . . . . . . . . . . . . . . . . . . .29

Setting Temperature Control . . . . . . . . . . . . . . . . . . . . .29

Locating Temperature Control . . . . . . . . . . . . . . . . . . .29

Temperature Control Settings . . . . . . . . . . . . . . . . . . . .30

Outdoor Air Reset Option . . . . . . . . . . . . . . . . . . . . . . .31

Boiler Operating Temperature Control . . . . . . . . . . . . .31

Temperature Control Sensors . . . . . . . . . . . . . . . . . . . .32

Placement of Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

Remote Mounting of Sensor . . . . . . . . . . . . . . . . . . . . .33

Hot Surface Ignition System . . . . . . . . . . . . . . . . . . . . . . . . .33

Operation and Diagnostic Lights . . . . . . . . . . . . . . . . . . . . .35

Domestic Water Heaters . . . . . . . . . . . . . . . . . . . . . . . . . . . .36

Water Velocity Control . . . . . . . . . . . . . . . . . . . . . . . . .36

Water Chemistry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

Pipe Size Requirements . . . . . . . . . . . . . . . . . . . . . . . .37

Circulating Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

Minimum Pump Performance . . . . . . . . . . . . . . . . . . . .38

Heat Exchanger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38

Potable Hot Water Temperature Control Settings . . . . .38

Location of Cold Water Supply Piping Connections . .39

High Water Temperature Limit Control . . . . . . . . . . . .39

Optional Relief Valve . . . . . . . . . . . . . . . . . . . . . . . . . .39

Thermal Expansion . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

Cathodic Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

Cleaning and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . .40

Flue Gas Passageways Cleaning Procedures . . . . . . . . . . . .40

Burner Removal and Cleaning . . . . . . . . . . . . . . . . . . .40

Heat Exchanger Cleaning . . . . . . . . . . . . . . . . . . . . . . .41

Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

Combustion and Ventilation Air . . . . . . . . . . . . . . . . . .41

Adjusting Differential Air Pressure . . . . . . . . . . . . . . . .41

Servicing Hot Surface Igniter and Ignition Module . . .43

Ignition System Checkout . . . . . . . . . . . . . . . . . . . . . . .44

Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

Schematic/Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . .47

Revision Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . .Back Cover

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Lochinvar 000 - 2, 495, 065 service manual Hydronic Heating Boilers and Domestic Water Heaters
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000 - 2, 065, 495 specifications

Lochinvar 000 - 2,495,065 is a cutting-edge water heating solution designed to meet the needs of modern residential and commercial applications. This high-efficiency unit combines advanced engineering with robust technologies, providing unmatched performance and reliability.

One of the standout features of the Lochinvar 000 - 2,495,065 is its high thermal efficiency, which often exceeds 95%. Utilizing condensing technology, the unit harnesses heat from exhaust gases, allowing it to recover otherwise lost energy, thereby reducing operational costs significantly. This efficiency not only lowers energy bills for users but also lessens the environmental impact by minimizing greenhouse gas emissions.

The Lochinvar 000 - 2,495,065 is equipped with a lightweight stainless steel heat exchanger. This construction ensures exceptional corrosion resistance and longevity, extending the lifespan of the unit while maintaining optimal performance. The stainless steel design also contributes to faster heating times, making it ideal for high-demand environments.

In terms of control technologies, the Lochinvar 000 - 2,495,065 features an intuitive touchscreen interface. This user-friendly design allows for seamless operation, real-time monitoring, and easy adjustments to temperature settings. Additionally, it facilitates remote diagnostics, promoting efficient maintenance and reducing downtime, which is crucial for busy facilities.

For enhanced safety, the Lochinvar 000 - 2,495,065 includes multiple safety mechanisms, such as over-temperature protection, flame safeguard, and leak detection systems. These safety features ensure secure operation and give users peace of mind.

Moreover, the unit is compatible with various fuel sources, including natural gas and propane, making it versatile and adaptable to different infrastructure requirements. This flexibility ensures that the Lochinvar 000 - 2,495,065 can be integrated into various settings, from residential homes to large commercial buildings.

Another significant characteristic is its compact design, allowing for easy installation in tight spaces. The footprint of the Lochinvar 000 - 2,495,065 makes it an ideal solution for applications where space is at a premium, without compromising on performance.

In summary, Lochinvar 000 - 2,495,065 represents a premium choice for water heating solutions, merging advanced technologies, high efficiency, and user-friendly design to cater to a wide range of heating needs while ensuring safety and sustainability.
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