Installation & Operation Manual

2 Prepare boiler

Remove boiler from wood pallet

1.After removing the outer shipping carton from the boiler, remove the parts box.

2.Remove the front door to access the lag bolts in front of the unit (FIG. 2-1).

3.To remove the boiler from the pallet (after removing the front door):

a.Remove the two lag bolts from the wood pallet inside the boiler (FIG. 2-1).

b.Detach the boiler from the lag bolts in the rear of the unit, see FIG. 2-1.

NOTICE

Do not drop the boiler or bump the jacket

on the floor or pallet. Damage to the boiler

 

can result.

Figure 2-1Boiler Mounted on Shipping Pallet

. 2

Gas conversions

Model 400

1.Remove the top and front access covers from the unit (no tools required for removal).

2.Remove the three screws securing the venturi to the blower. Note: When separating the venturi from the blower, take care not to damage the O-ring inside the blower (FIG. 2-2).

3.Remove the four star-drive screws securing the gas valve to the venturi (FIG. 2-2).

4.Locate the propane orifice disk from the conversion kit bag. Verify that the stamping on the orifice disk matches the boiler size (Model 400 - 8.0 LP orifice stamping).

5.Remove the existing orifice from the O-ring in the side of the gas valve and replace it with the orifice from the kit. Position and secure the orifice in the valve as shown in FIG. 2-2.

6.Reposition the gas valve against the venturi and replace the star-drive screws (FIG. 2-2) securing the valve to the venturi.

7.Inspect the O-ring inside the blower. Handle the O-ring with care, do not damage. Reposition the venturi against the blower and replace the screws securing the venturi to the blower (FIG. 2-2).

8.After installation is complete, attach the propane conversion label (in the conversion kit bag) next to the boiler rating plate. Attach the LP caution label (in the conversion kit bag) to the left side of the unit in the lower left corner.

9.Replace the top and front access covers.

￿WARNING After converting to LP, check combustion per the Start-up procedure in Section 10

￿WARNING

For a boiler already installed, you must turn off gas supply, turn off power and allow boiler to cool before proceeding. You must also completely test the boiler after conversion to verify performance as described under Start-up, Section 10 of this manual. Failure to comply could result in severe personal injury, death, or substantial property damage.

For the 400 Model you must install a propane orifice to operate the Knight XL on propane gas. Verify when installing that the orifice size marking matches boiler size (Model 400 - 8.0 LP orifice stamping).

Models 501 - 801 do not require an orifice installation for propane operation, but they will require a valve adjustment.

of this manual. Failure to check and verify combustion could result in severe personal injury, death, or substantial property damage.

Model 400: Inspect the O-ring when the ￿ DANGER blower is disassembled. The O-ring must

be in good condition and must be installed. Failure to comply will cause a gas leak, resulting in severe personal injury or death.

Figure 2-2Installing Propane Orifice - Model 400

BLOWER

O-RING VENTURI

SCREWS

QTY. 3

SCREWS O-RING QTY. 4

BRASS ORIFICE GAS VALVE

13

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Lochinvar 400, 801 operation manual Prepare boiler, Remove boiler from wood pallet, Gas conversions Model
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400, 801 specifications

The Lochinvar 801,400 is a cutting-edge solution in the realm of high-efficiency commercial water heating. This model represents a significant advancement in the design and functionality of water heaters, catering primarily to the demands of large-scale facilities like hotels, hospitals, and large industrial operations.

One of the standout features of the Lochinvar 801,400 is its impressive heating capacity, which can produce up to 801,400 BTUs, making it suitable for high-demand applications. This output is crucial for establishments that require a consistent supply of hot water, such as commercial kitchens and laundry facilities. The robust design ensures that it can handle peak demand periods without compromising performance.

Another significant aspect is the innovative use of advanced technology in its operation. The Lochinvar 801,400 integrates smart controls that enhance its efficiency and ease of operation. These controls allow for precise monitoring and adjustment of water temperatures, ensuring that the system operates within optimal parameters while maximizing energy savings. The intelligent monitoring system can provide real-time updates, making it easier for facility managers to keep track of performance and address maintenance needs proactively.

The construction of the Lochinvar 801,400 incorporates durable materials that not only enhance the longevity of the unit but also offer resistance to corrosion and wear. This durability translates into lower maintenance costs and an extended lifespan for the unit, making it a worthwhile investment for businesses.

Moreover, the Lochinvar 801,400 is designed with energy efficiency in mind. It boasts a high thermal efficiency rating, which reduces operational costs and minimizes the carbon footprint of heating operations. This efficiency is critical in today’s environmentally conscious market, where businesses are seeking to reduce their energy consumption and comply with strict regulations.

The design of the Lochinvar 801,400 also prioritizes safety, featuring innovative safety controls and fail-safes that protect both the unit and the users.

In summary, the Lochinvar 801,400 offers a combination of high capacity, advanced technology, durability, and energy efficiency, making it an excellent choice for commercial water heating solutions. As industries continue to evolve, the demand for reliable and efficient water heating solutions like the Lochinvar 801,400 will only increase.
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