Check for gas leaks, Check thermostat circuits

9 Start-up(continued)

Check for gas leaks

Installation & Operation Manual

WARNING Propane boilers only – Your propane supplier mixes an odorant with the propane

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 top 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.

DO NOT adjust or attempt to measure 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 or measure the gas valve outlet pressure could result in damage to the valve, causing potential severe personal injury, death, or substantial property damage.

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.

Check thermostat circuit(s)

1.	Disconnect the two external wires connected to the
	enable 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.)

Figure 9-1Condensate Trap

FROM CONDENSATE

VENT ON BOILER

FROM CONDENSATE

5. Once the external boiler enable wiring is checked and

corrected if necessary, reconnect the external thermostat

circuit wires to the connection board. Allow the boiler to

cycle.

Inspect condensate system

TO FLOOR DRAIN

DRAIN ON BOILER

OR NEUTRALIZER KIT

Inspect/check condensate lines and fittings

1” PVC / CPVC CONNECTION

1.Inspect the condensate drain line, condensate PVC fittings and condensate trap.

3, 2, 3.5, 2.5 specifications

The Lochinvar 2, 3, 3.5, and 2.5 models are a standout lineup in the realm of commercial and residential water heating solutions. Known for their advanced technology and high efficiency, these units cater to a wide range of applications, ensuring optimal performance and reliability.

One of the key features of the Lochinvar models is their robust construction. Each unit is designed to withstand rigorous operational demands while providing excellent thermal efficiency. They are equipped with stainless steel heat exchangers, which offer superior resistance to corrosion and extend the lifespan of the equipment. This durability is essential for both commercial and residential settings where demand can vary significantly.

The Lochinvar 2, 3, 3.5, and 2.5 models utilize innovative control systems that enhance their operational efficiency and user convenience. The built-in Smart Control technology allows for easy monitoring and adjusting of system parameters, ensuring that users can maintain optimal performance with minimal effort. This feature is especially beneficial in commercial settings where large volumes of hot water are required, as it enables users to effectively manage their energy consumption.

Energy efficiency is another hallmark of the Lochinvar lineup. With high-efficiency ratings, these models help reduce energy costs significantly, making them an environmentally friendly option for heating water. The use of advanced combustion technology ensures that these units can deliver maximum heat output with minimal fuel consumption.

Additionally, the Lochinvar models are designed with safety and reliability in mind. They feature multiple safety controls and diagnostics that alert users to potential issues before they escalate, providing peace of mind. The integration of advanced venting options allows for flexible installation configurations, accommodating various building layouts and space requirements.

In summary, the Lochinvar 2, 3, 3.5, and 2.5 models define modern water heating technology with their combination of durability, efficiency, and advanced features. With their innovative design and user-friendly controls, they meet the demanding needs of both commercial and residential users, making them a top choice in the water heater market. Whether for new installations or replacements, these units deliver reliable performance and value.

Lochinvar 3.5, 2.5 Check for gas leaks, Check thermostat circuits, Inspect condensate system

Models: 3 2 3.5 2.5