Pipe Sizes for Propane GAS, Purging GAS Line

PIPE SIZES FOR PROPANE GAS

Make sure to contact the gas supplier for pipe sizes, tanks, and 100% lockup gas pressure regulator.

PURGING GAS LINE

Gas line purging is required with new piping or systems in which air has entered. Gas purging should be performed per NFPA 54 for US and CAN B149.1 for Canada.

CHECK GAS SUPPLY INLET PRESSURE

CSA or UL listed flexible gas connections are acceptable, but make sure that the line has adequate capacity to allow your boiler to fire at full rate. Consult with local codes for proper installation or service procedures.

Do not adjust or attempt to measure gas valve outlet pressure. 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.

Make sure the gas piping are sized for the proper flow and length of pipe, to avoid excessive pressure drop. The gas meter and the gas regulator must be properly sized for the total gas load.

Perform the below steps when checking inlet gas supply:

1.Turn the main power switch to the “OFF” position.

2.Shut off gas supply.

3.Remove the 1/8" pipe plug on the main gas shutoff valve and install a suitable 1/8" fitting (field supplied) for the manometer tubing. Place the tubing of the manometer over the tap once the 1/8" fitting is installed.

4.Slowly turn on the gas supply.

5.Ensure inlet pressure is within specified range.

6.If the gas pressure is out of range, contact the gas utility, gas supplier, qualified installer or service agency to determine the necessary steps to provide proper gas pressure to the control.

CHECK FOR GAS LEAKS

Before operating the boiler, make sure to check the floor near and around the boiler for gas odorant or any unusual odor. Remove the top access panel and check for odor in the interior of the boiler enclosure. Do not start the boiler if there is any indication of a gas leak. Use an approved leak detection solution and repair any leaks at once.

In the case of propane boilers, the supplier mixes an odorant with the propane to make its presence detectable. But in some instances, the odorant can fade, and the gas may no longer have an odor. Before operating the boiler, make sure the propane supplier verify the correct odorant level in the gas.

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.

3400, 1700, 2000, 2600 specifications

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