Installation & Service Manual

1 Determine unit location (continued)

 

 

 

Outdoor boiler installation

 

TABLE 1A

 

 

COMBUSTIBLE FLOOR KITS

Adequate hydronic system antifreeze must be used. A snow

Model

 

Kit Number

 

screen should be installed to prevent snow and ice accumulation

497

 

CFK3302

around the unit or its venting system.

 

 

647

 

CFK3303

Shut-down and draining

747

 

CFK3304

If for any reason, the unit is to be shut off, the following

 

 

 

Freeze protection

precautionary measures must be taken:

1. Shut off gas supply.

 

 

 

Although these units are CSA International design- certified for outdoor installations, such installations are not recommendedinareaswherethedangeroffreezingexists.Youmust provide proper freeze protection for outdoor installations, units installed in unheated mechanical rooms or where temperatures may drop to the freezing point or lower. If freeze protection is not provided for the system, a low ambient temperature alarm is recommended for the mechanical room. Damage to the unit by freezing is non-warrantable.

Anytime the temperature measured at any of the sensors (except the outside air temperature sensor) drops below 40°F, the control turns on the pump contact and the alarm relay. The pump will shut off when both sensors are above 50°F.

Pump operation

This unit is equipped with a pump delay of 30 seconds. If continuous operation of the pump is desired, the pump must be electrically connected to another circuit. Connection of the pump to this unit will provide intermittent pump delay operation.

Location

Locate indoor boilers and water heaters in a room having a tem- perature safely above freezing [32°F (0°C)].

2.Shut off water supply.

3.Shut off electrical supply

4.Drain the unit completely. Remove one threaded plug or bulbwell from the inlet side of the front header and one from the outlet side of the front header on the heat exchanger. Blow all water out of the heat exchanger (see FIG.'s 1-2A and 1-2B).

5.Drain pump and piping.

Figure 1-2A_Drain the unit_Models 497 - 747

CAUTION

A mechanical room operating under a negative

 

draft pressure may experience a down draft

 

in the flue of a boiler when it is not firing.

 

The cold outside air pulled down the flue

 

may freeze a heat exchanger. This condition

 

must be corrected to provide adequate freeze

 

protection.

Hydronic systems anti-freeze

Freeze protection for a heating boiler or hot water supply boiler using an indirect coil can be provided by using hydronic system antifreeze. Follow the appliance manufacturers instructions. Do not use undiluted or automotive type antifreeze.

DRAIN PLUG

Figure 1-2B_Drain the unit_Models 987 - 2067

DRAIN PLUG (2X)

11

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Lochinvar 497 - 2067 Outdoor boiler installation, Shut-down and draining, Freeze protection, Pump operation, Location
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497 - 2067 specifications

Lochinvar 497 - 2067 is a highly efficient and versatile condensing boiler that is designed to meet the diverse heating needs of residential and commercial applications. Known for its impressive performance and advanced technology, the Lochinvar 497 - 2067 has garnered a reputation as a reliable choice among heating professionals.

One of the standout features of the Lochinvar 497 - 2067 is its impressive thermal efficiency. The boiler boasts an efficiency rating of up to 95% AFUE (Annual Fuel Utilization Efficiency), allowing users to significantly reduce their energy costs while minimizing environmental impact. This efficiency is facilitated by its innovative condensing technology, which captures and reuses heat from exhaust gases for optimal performance.

The Lochinvar 497 - 2067 is equipped with a robust stainless steel heat exchanger designed to handle high temperatures and ensure long-lasting performance. The heat exchanger’s design maximizes heat transfer, while its corrosion-resistant properties guarantee durability over time. This contributes to the boiler's overall longevity and serviceability, reducing the need for frequent replacements.

Control is another critical feature of the Lochinvar 497 - 2067. The boiler comes with an advanced control system that enables easy management of system operations. Users can take advantage of features such as outdoor reset control, which adjusts the temperature of the boiler based on external weather conditions, enhancing system efficiency and comfort.

In terms of safety, the Lochinvar 497 - 2067 incorporates several cutting-edge safety features, including a flame detection system and multiple safety shut-off devices. These safeguards help to ensure the safe operation of the boiler, providing peace of mind to users and heating professionals alike.

Another important characteristic is the compact design of the Lochinvar 497 - 2067, which allows for flexible installation in various settings, including tight spaces. Its lightweight structure further simplifies the installation process, making it a practical choice for contractors.

In summary, the Lochinvar 497 - 2067 is an exceptional high-efficiency condensing boiler that combines advanced technology, durability, and ease of use. With its impressive thermal efficiency, superior heat exchanger design, advanced control systems, and enhanced safety measures, it stands out as a top choice for those seeking reliable heating solutions. This boiler not only meets but exceeds modern demands for energy efficiency and performance, solidifying its position in the market.
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