2 Prepare boiler

Remove boiler from wood pallet

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

2.To remove the boiler from the pallet:

a.Remove the two (2) lag bolts securing the bottom of the unit to the pallet.

b.Lift the boiler off the wall bracket mounted to the pallet.

3.Remove the two (2) lag bolts securing the wall bracket to the wood pallet. Be certain not to lose the wall bracket as it will be needed for securing the boiler to the wall (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

REMOVE SHIPPING [WALL] BRACKET DO NOT DISCARD- WILL BE NEEDED TO SECURE THE BOILER TO THE WALL

Gas conversions

Installation & Operation Manual

Table 2A LP Conversion Table

 

LP Conversion Table

Model

 

LP Orifice Stamping

55

 

055

85

 

085

110

 

110

155

 

155

199

 

199

285

 

H285

399

 

8.0

1.Remove the front access cover from the unit (no tools required for removal).

2.Models 55 - 285 only, locate the power switch on the gas valve and turn the power switch to the “OFF” position (FIG. 2-2).

3.Model 399 only, shut off power at the source.

4.Disconnect the Molex plug from the gas valve.

5.Using a 5/16" nut driver, loosen the band clamp securing the air intake coupler to the gas valve venturi. Remove the air intake pipe and coupler from the gas valve venturi.

6.Using an Allen wrench, remove the screws securing the gas valve venturi to the inlet of the combustion blower (FIG. 2-2).

Figure 2-2Gas Valve Power Switch & Venturi Removal

REMOVE THE SCREWS SECURING

THE GAS VALVE VENTURI TO THE

INLET OF THE COMBUSTION

BLOWER

￿WARNING

12

The gas conversion procedure should be accomplished BEFORE the boiler is installed. For a boiler already installed, you must turn off gas supply, turn off power, and allow the 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.

You must install the propane orifice to fire the Knight wall mount boiler on propane. Verify when installing that the orifice size marking matches boiler size (Table 2A). Failure to comply could result in severe personal injury, death, or substantial property damage.

7.Using an Allen wrench, remove the screws securing the gas pipe to the gas valve. Remove the gas valve venturi assembly from the unit (FIG. 2-3).

8.Using an Allen wrench, remove the venturi from the gas valve.

9.Locate the propane orifice disk from the conversion kit bag. Verify that the stamping on the orifice disk matches the boiler size (see Table 2A).

10.Place the orifice into the black rubber grommet in the side of the gas valve and secure inside the gas valve (see FIG. 2-3).

11.Reattach the venturi to the gas valve and reposition the gas valve venturi assembly inside the unit. Secure the venturi back to the gas valve (FIG. 2-3).

12.Reattach the gas pipe to the gas valve. Reattach the air intake and coupler and tighten down on the band clamp.

Page 11 Page 13
Page 12
Image 12
Lochinvar WH 55-399 operation manual Prepare boiler, Remove boiler from wood pallet, Gas conversions
Page 11 Page 13

WH 55-399 specifications

The Lochinvar WH 55-399 is a high-efficiency water heater designed for residential and commercial applications, offering a reliable solution for hot water needs. This model represents an advanced approach to water heating, combining cutting-edge technologies and features that ensure optimal performance and energy efficiency.

One of the standout features of the Lochinvar WH 55-399 is its high thermal efficiency, which is a key factor in reducing energy consumption and operating costs. With an efficiency rating exceeding 90%, this water heater ensures that more energy is converted into usable hot water, making it an environmentally friendly choice.

The WH 55-399 utilizes advanced condensing technology, which allows it to extract additional heat from the exhaust gases before they are expelled. This process not only increases efficiency but also significantly decreases greenhouse gas emissions. The unit is also equipped with an intelligent control system that allows for precise temperature adjustments, ensuring that the user has an optimal supply of hot water while maintaining energy savings.

Another important aspect of this model is its impressive recovery rate. The ability to quickly heat water after a significant draw ensures that users will not experience interruptions in their hot water supply, making it ideal for busy households or commercial environments. This is particularly beneficial in applications requiring consistent hot water availability, such as restaurants or athletic facilities.

The Lochinvar WH 55-399 is designed with durability in mind. Constructed from high-quality materials, this water heater boasts a robust tank lined with corrosion-resistant coatings, extending the lifespan of the unit and reducing maintenance needs. Additionally, it features a reliable gas burner and a well-insulated tank, contributing to its overall efficiency and performance.

Safety is also a priority with the WH 55-399. The unit incorporates multiple safety features, including a flame sensor, automatic shut-off valve, and over-temperature protection, ensuring peace of mind for users.

In summary, the Lochinvar WH 55-399 stands out with its combination of high efficiency, advanced technology, and durable construction. Whether for residential or commercial use, this water heater provides a dependable and cost-effective solution for all hot water needs. Its innovative design and performance characteristics make it a top choice for anyone seeking a premium water heating option.
Top Page Image Contents