10 Start-up

Check for gas leaks

Installation & Operation Manual

Inspect/fill condensate system

￿WARNING

Before starting the boiler, and during initial operation, smell near the floor and around the boiler for gas odorant or any unusual odor. Remove the front access panel and smell the interior of the boiler enclosure. Do not proceed with startup if there is any indication of a gas leak. Use an approved leak detection solution. Repair any leaks at once.

Inspect/check condensate lines and fittings

1.

Inspect the condensate drain line, condensate fittings and

 

condensate trap.

2.

Fill condensate trap with enough water to make the ball

 

float (FIG. 10-1).

3.

Loosen compression fitting (FIG. 10-1).

4.

Slide condensate trap onto condensate drain at the bottom

￿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.

of the unit.

 

5. Tighten compression fitting.

 

The condensate trap (FIG. 10-1) must have

￿ WARNING

the float ball in place during all times of

boiler operation to avoid flue gas emission from the condensate drain line. Failure to ensure the float ball is in place could result in

￿WARNING

Propane boilers only – Your propane supplier mixes an odorant with the propane to make its presence detectable. In some instances, the odorant can fade, and the gas may no longer have an odor. Before startup (and periodically thereafter), have the propane supplier verify the correct odorant level in the gas.

severe personal injury or death.

Figure 10-1Condensate Trap

COMPRESSION

FITTING

Check thermostat circuit(s)

1.Disconnect the two external wires connected to each of the heat/loop demand terminals on the connection board.

2.Connect a voltmeter across these two incoming wires. Close each thermostat, zone valve, and relay in the external circuit one at a time and check the voltmeter reading across the incoming wires.

3.There should NEVER be a voltage reading.

4.If a voltage does occur under any condition, check and correct the external wiring. (This is a common problem when using 3-wire zone valves.)

5.Once the external thermostat circuit wiring is checked and corrected if necessary, reconnect the external thermostat circuit wires to the connection board.

CONDENSATE

DRAIN

FLOAT BALL

REMOVABLE CAP TO

CLEAN OUT TRAP

IMG00209

Clean/Inspect Trap Assembly

1.Remove the clean out cap on the bottom of the trap. Let the condensate and any debris drain out.

2.Refill the trap according to the instructions above.

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Lochinvar WH 55-399 operation manual Check for gas leaks Inspect/fill condensate system, Check thermostat circuits

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.