Installation & Operation Manual

5 Vertical direct venting (continued)

NOTICE

Instead of cementing the smaller pipe to

the rain cap, a field supplied stainless steel

 

 

screw may be used to secure the two (2)

 

components together when field disassembly

 

is desired for cleaning (see FIG. 4-9, page

NOTICE

Ensure termination height is above the

roof surface or anticipated snow level (12

 

 

inches in U.S.A. or 18 inches in Canada) as

 

shown in FIG. 5-4, page 30.

27).

NOTICE

If assembly is too short to meet height requirement, the two (2) pipes supplied

￿WARNING

When using the alternate screw assembly method, drill a clearance hole in the rain cap and a pilot hole in the vent pipe for the screw size being used. Failure to drill adequate holes may cause cracking of PVC components, allowing combustion products to be recirculated. Failure to follow this warning could result in personal injury or death.

CAUTION

in the kit may be replaced by using the same diameter, field supplied SDR-26 PVC (D2241) pipe. Add standard schedule 40 PVC pipe for #CVK3007 Do not extend dimension D more than 60 inches (see FIG. 4-9 and FIG. 4-10, page 27).

DO NOT use field-supplied couplings to extend pipes. Airflow restriction will occur.

￿WARNING

Do not operate the appliance with the rain cap removed or recirculation of combustion products may occur. Water may also collect inside the larger combustion air pipe and flow to the burner enclosure. Failure to follow this warning could result in product damage or improper operation, personal injury, or death.

6.Install the rain cap and the small diameter pipe assembly into the roof penetration assembly. Ensure the small diameter pipe is cemented and bottomed in the Y concentric fitting.

7.Cement the appliance combustion air and vent pipes to the concentric vent termination assembly. See FIG. 5-6 for proper pipe attachment.

8.Operate the appliance through one (1) heat cycle to ensure combustion air and vent pipes are properly connected to the concentric vent termination connections.

4.Install the Y concentric fitting pipe assembly through the structure’s hole and field supplied roof boot/flashing.

NOTICE

Do not allow insulation or other materials

to accumulate inside the pipe assembly

 

when installing through the hole.

5.Secure the assembly to the roof structure as shown below in FIG. 5-6 using field supplied metal strapping or equivalent support material.

Figure 5-6Concentric Vent Roof Installation

Multiventing vertical terminations

When two (2) or more direct vent appliances are vented near each other, each appliance must be individually vented (see FIG. 5-7). NEVER common vent or breach vent this appliance. When two (2) or more direct vent appliances are vented near each other, two (2) vent terminations may be installed as shown in FIG. 5-7. It is important that vent terminations be made as shown to avoid recirculation of flue gases.

Figure 5-7Concentric Vent and Combustion Air Vertical Termination

12”

MINIMUM

COMBUSTION

AIR (TYPICAL)

12” (18” FOR CANADA)

 

MINIMUM CLEARANCE

 

ABOVE HIGHEST

 

ANTICIPATED SNOW

 

LEVEL. MAXIMUM OF

31

24” ABOVE ROOF.

Page 30 Page 32
Page 31
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Lochinvar WH 55-399 operation manual Multiventing vertical terminations, Minimum Combustion AIR Typical
Page 30 Page 32

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.
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