Installation & Operation Manual

12 Maintenance Maintenance and annual startup

Table 12A Service and Maintenance Schedules

Service technician

(see the following pages for instructions)

 

General:

 

 

 

 

 

 

• Address reported problems

 

 

• Inspect interior; clean and vacuum if

 

necessary;

 

 

 

 

 

• Clean condensate trap and fill with fresh

 

water

 

 

 

 

 

 

• Check

for

leaks

(water, gas,

flue,

 

condensate)

 

 

 

 

• Verify flue and air lines in good condition

 

and sealed tight

 

 

 

-UP

• Check

system water

pressure/system

piping/expansion tank

 

 

• Check control settings

 

 

START

 

 

• Check

ignition

and

flame

sense

 

 

electrodes (sand off any deposits; clean

ANNUAL

and reposition)

 

 

 

• Check wiring and connections

 

• Perform

start-up

checkout

and

performance verification per Section 10

 

of this manual.

 

 

 

 

• Flame inspection (stable, uniform)

 

• Flame signal (at least 10 microamps at

 

high fire)

 

 

 

 

 

• Clean the heat exchanger if flue

 

temperature is more than 54°F above

 

return water temperature.

 

If combustion or performance indicate need:

•Clean heat exchanger

•Remove and clean burner using compressed air only

•Clean the blower wheel

Owner maintenance

(see the Knight Wall Mount User’s Information

Manual for instructions)

 

• Check boiler area

Daily

• Check pressure/temperature

 

gauge

 

• Check vent piping

 

• Check air piping

Monthly

• Check air and vent termination

 

screens

 

• Check relief valve

 

• Inspect condensate drain system

 

• Check air vents

 

 

Periodically

• Test low water cutoff (if used)

• Reset button (low water cutoff)

 

 

 

 

• Check boiler piping (gas and

Every

water) for leaks

 

6 months

• Operate relief valve

End

• Shut boiler down (unless boiler

of season

used for domestic hot water)

months

 

74

Page 73 Page 75
Page 74
Image 74
Lochinvar WH 55-399 operation manual Maintenance Maintenance and annual startup, Service technician, Owner maintenance
Page 73 Page 75

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