Final checks before starting the boiler

Outdoor Knight Boiler Installation & Operation Manual

7 Start-up(continued)

 Read the Outdoor Knight Boiler Service Manual to

familiarize yourself with SMART SYSTEM control

module operation. Read this manual, page 36 for proper

Check gas piping

1.Check around the boiler for gas odor following the procedure on page 24 of this manual (connecting gas supply piping).

steps to start boiler.

 Verify the boiler and system are full of water and all

system components are correctly set for operation.

 Verify the preparation procedures of Section 7, pages 33

and 34 have been completed.

WARNING

If you discover evidence of any gas leak, shut down the boiler at once. Find the leak source with a bubble test and repair immediately. Do not start the boiler again until corrected. Failure to comply could result in severe personal injury, death, or substantial property damage.

 Fill the vent condensate trap with water (removing the

retaining screw in order to remove the 2 inch PVC cap

with the switch located at the top of the trap). Replace

the cap. Press the cap onto the trap until the cap makes

Propane boilers – verify conversion

1.Verify propane conversion has been completed per the Propane Conversion instructions.

contact with the drain. Replace the retaining screw.

 Verify electrical connections are correct and securely

attached.

 Verify air opening and vent opening are free of

obstruction.

Start the boiler

1.Read and follow the Operating instructions in FIG. 7-2, page 36.

If boiler does not start correctly

1.	Check for loose connections, blown fuse or service switch
	off?
2.	Is boiler water temperature above 200°F?

WARNING

DO NOT adjust gas valve outlet pressure. The gas valve is factory-set for the correct outlet pressure. This setting is suitable for natural gas and propane, requiring no field adjustment. Attempting to alter the gas valve outlet pressure could result in damage to the valve, causing potential severe personal injury, death, or substantial property damage.

Outdoor boilers are typically shipped ready to fire on natural gas. Check boiler rating plate to determine which fuel the boiler is set for. If set to natural gas, it may be converted to LP by installing an orifice (see page 11). In order to operate on LP gas, an orifice MUST BE installed. Failure to comply could result in severe personal injury, death, or substantial property damage.

3.	Is thermostat set below the controlling sensor
	temperature?
4.	Is gas turned on at meter or boiler?
5.	Is incoming gas pressure less than 4 inches w.c.?

If none of the above corrects the problem, refer to the Troubleshooting Section of the Outdoor Knight Boiler Service Manual.

Check system and boiler

Check water piping

1.Check system piping for leaks. If found, shut down the boiler and repair immediately. (See WARNINGS on pages 33 and 34 (startup) regarding failure to repair leaks.)

2.Vent any remaining air from the system using manual vents. Air in the system will interfere with circulation and cause heat distribution problems and noise.

Check flame and combustion

1.Turn the main power off to the boiler by placing the “On/ Off” switch in the OFF position.

2.Remove the flue temperature sensor from the flue pipe connection. NOTE: Combustion measurements will be made at this point.

3.Turn the main power on to the boiler by placing the “On/ Off” switch in the ON position.

151-286 specifications

Lochinvar 151-286 is a high-efficiency water heater designed for both residential and commercial applications. This model stands out due to its advanced technology, user-friendly controls, and robust construction, making it a reliable choice for those seeking to optimize their hot water supply.

One of the key features of the Lochinvar 151-286 is its impressive heating capacity. With a maximum input of 286,000 BTU/hr, it can efficiently meet hot water demands for a variety of settings, including hotels, restaurants, and other commercial facilities. This substantial output ensures that even during peak usage hours, hot water availability is maximized, reducing wait times and enhancing customer satisfaction.

The water heater utilizes a state-of-the-art condensing technology that maximizes efficiency by capturing and utilizing flue gas heat. This process allows the Lochinvar 151-286 to achieve an impressive thermal efficiency rating of up to 98%. The benefit of such high efficiency translates to significant energy savings and reduced operational costs over time, making it an environmentally friendly option as well.

The Lochinvar 151-286 is equipped with a user-friendly control system featuring advanced microprocessor controls. These controls allow for precise temperature management and monitoring, enabling users to set optimal temperatures according to their specific needs. Additionally, the heater includes built-in diagnostics, allowing for easy troubleshooting and maintenance, which minimizes downtime and extends the life of the unit.

Another standout characteristic of the Lochinvar 151-286 is its durable construction. Built with high-quality materials, including a robust stainless steel heat exchanger, this model is designed to withstand the rigors of daily use. The unit also features a compact design, which facilitates easy installation in various locations, whether it be in a utility closet or alongside existing equipment.

Safety features are paramount in the Lochinvar 151-286, with multiple safeguards in place to protect against overheating and other potential issues. The unit is designed to operate reliably, ensuring peace of mind for users who depend on consistent hot water availability.

In summary, the Lochinvar 151-286 water heater combines high capacity, exceptional efficiency, and user-friendly technology, making it an excellent choice for those seeking reliable hot water solutions. Its advanced features deliver performance and durability that stand out in the competitive market of water heating systems.