Piping of the Boiler System

Installation & Service Manual

4Water connections (continued)

9.Inspect the liquid level in the expansion tank. The system must be full and under normal operating pressure to ensure proper water level in the expansion tank. Ensure that diaphragm type expansion tanks are properly charged and not water logged.

10.Start the boiler according to the Section 6 - “Start-Up Instructions” in this manual. Operate the system, including the pump, boiler and radiation units, for one hour.

11.Recheck the water level in the expansion tank. If it exceeds half the tank volume, open the tank to reduce the water level. Recheck pressure charge on diaphragm type tanks.

12.Shut down the entire system and vent all radiation units and high points in the system.

13.Close the water makeup valve and check the strainer and pressure reducing valve for sediment or debris. Reopen the water makeup valve.

14.Verify system pressure with the boiler pressure gauge before beginning regular operation.

15.Within three days of start-up, recheck and bleed all air vents and the expansion tank using these instructions.

The drawings in this section (see FIG’s 4-7 thru 4-11) show typical heating boiler piping installations. Before beginning the installation, consult local codes for specific plumbing requirements. The installation should provide unions and valves at the inlet and outlet of the boiler so it can be isolated for service. The boiler circulating pump, air separator, expansion tank and other components required for proper installation must be purchased locally. An air separation device must be supplied in the installation piping to eliminate trapped air in the system. Locate a system air vent at the highest point in the system. The system must also have a properly sized expansion tank installed. Typically, an air charged diaphragm-type expansion tank is used. The expansion tank must be installed close to the boiler and on the suction side of the system pump to ensure proper operation.

CAUTION	This boiler system should not be operated at
	less than 12 PSIG.

TABLE - 4B

SYSTEM TEMPERATURE RISE CHART

Based on Boiler Output in Btu/hr

Btu/hr		10°F T		20°F T		30°F T		40°F T

Input	Output	GPM	Ft/hd	GPM	Ft/hd	GPM	Ft/hd	GPM	Ft/hd

45,000	36,900	7.4	0.6	3.7	0.2	2.5	0.2	1.9	0.2

75,000	61,500	12.3	1.3	6.2	0.4	4.1	0.3	3.1	0.2

90,000	73,800	14.9	1.4	7.4	0.5	5.0	0.3	3.7	0.2

135,000	110,700	22.3	3.2	11.1	1.2	7.4	0.6	5.6	0.3

180,000	147,600	29.7	5.1	14.9	1.6	9.9	0.7	7.4	0.4

215,000	176,300	--	--	17.0	1.3	11.8	0.8	8.9	0.4

260,000	213,200	--	--	21.5	2.1	14.3	0.9	10.7	0.5

45,000 - 260,000 BTU/HR specifications

Lochinvar, a leader in high-efficiency heating solutions, presents the Lochinvar line of boilers, specifically the Lochinvar 45,000 - 260,000 BTU/HR models. These boilers are designed to meet a wide range of heating demands, making them ideal for residential and commercial applications alike.

One of the key features of the Lochinvar boilers is their impressive efficiency rating. Utilizing advanced condensing technology, these units can achieve efficiencies of up to 96% AFUE (Annual Fuel Utilization Efficiency). This high efficiency not only reduces fuel consumption but also lowers utility bills, making it a cost-effective solution for heating needs.

The Lochinvar boilers are equipped with a powerful heat exchanger constructed from durable stainless steel. This design not only maximizes heat transfer but also enhances the longevity of the unit. By preventing corrosion and minimizing maintenance requirements, the stainless steel heat exchanger ensures that the boiler operates at peak performance for years.

Another significant aspect of the Lochinvar boilers is their modulating burner system. This technology allows the boiler to adjust its output based on demand, ensuring that it only uses the energy necessary to maintain the desired temperature. This feature not only improves efficiency but also contributes to a more comfortable indoor environment by minimizing temperature fluctuations.

The Lochinvar series also showcases a user-friendly control interface. The advanced LCD display allows for easy monitoring and adjustment of system settings. Connectivity options are often included, providing the ability to integrate with modern building management systems for enhanced control and diagnostics.

Safety features abound in the Lochinvar models, which include built-in safeguards such as temperature and pressure relief valves, flame detection systems, and modulation cut-off to protect against overheating and other hazardous conditions.

Moreover, these boilers are designed for easy installation and maintenance. Compact dimensions and lightweight design facilitate straightforward setup, even in tight spaces. Additionally, users can take advantage of the unit’s self-diagnostic capabilities to simplify troubleshooting and reduce downtime.

In conclusion, the Lochinvar 45,000 - 260,000 BTU/HR boilers represent a pinnacle of innovation in heating technology. With high efficiency, advanced control systems, durable components, and safety features, they stand out as reliable and effective solutions for a variety of heating applications, ensuring comfort and efficiency in any environment.

Lochinvar 45,000 - 260,000 BTU/HR Piping of the Boiler System, System Temperature Rise Chart

Models: 45,000 - 260,000 BTU/HR

4Water connections (continued)