Marshall Excelsior MER470 STANDARD KIT Important Installation Instructions

LP-Gas demands respect and understanding if it is to be used safely. It is important to read all instructions before
installing your kit. Please observe all cautions and warnings that we have given throughout these instructions.
They are for your safety.
The Flow-Longer LP-Gas Line Tap Kit makes it possible to connect small, portable appliances, normally fueled
by disposable LP-Gas cylinders, to the existing LP-Gas fuel supply of a recreational vehicle, cottage, back yard
patio, etc. without interrupting the supply of regulated fuel to the system. Flow-Longer eliminates the need to
purchase an extra LP-Gas cylinder or several small, disposable-type cylinders. The MER470 Flow-Longer kit
includes one (ME415) brass tee and one (MER421-144) 12 foot high pressure appliance hose. The tee fitting must
be installed between the vapor withdrawal valve on your LP-Gas container and the pressure regulator. This properly
places the tee fitting in the high-pressure portion of the LP-Gas system. Gas connections to the tee fitting are not
designed for movement or rotation after installation. Flexing, twisting, or vibration should be avoided.
The Flow-Longer tee contains a flow limiting feature designed to reduce the flow of gas should it detect an excess
flow condition in the system. This device may activate each time you open the cylinder valve. Follow the general
lighting instructions herein, to allow this flow limiting device to properly reset.
CAUTION: The Flow-Longer tee and associated hose assembly are intended for outdoor use only, with approved
DOT cylinders or ASME tanks with a 350 psi pressure relief valve. These components must only be connected to
cylinder valves supplying LP-Gas vapor. DO NOT connect to any valve delivering liquid propane. DO NOT allow
cylinders to lie on their side or become physically oriented in such a manner as to allow liquid propane to be
withdrawn. DO NOT attempt to transfer liquid propane through Flow-Longer hose or fittings to fill any LP-Gas
container.
WARNING: LP-Gas is flammable, under pressure, and can freeze skin. Liquid propane introduced into the Flow-
Longer components, or a pressure regulator would result in damage to both the regulator and the gas appliance
controls. Failure to follow these instructions could result in a LP-Gas leak, which if ignited, could result in fire,
explosion, severe personal injury, property damage or death.

INSTALLATION PROCEDURE:

1) Turn off all appliances connected to the existing LP-Gas system.
2) Close the vapor withdrawal valve at the cylinder (clockwise rotations). If your LP-Gas system is a double
cylinder installation, turn both cylinders off. (See note on following page regarding double cylinder
installations.)
3) With a 7/8 inch open end wrench, unthread the brass POL nut that connects the propane vapor withdrawal
valve to the pressure regulator or pigtail hose. This is a left-hand threaded connection, so turn the brass
nut clockwise to loosen.
IMPORTANT INSTALLATION INSTRUCTIONS
FOR FLOW-LONGER PROPANE KITS
MER470 STANDARD KIT
WARNING These products contain a chemical known to the state of
:
California to cause cancer and birth defects or reproductive harm
Marshall Excelsior Co.
1506 George Brown Drive Marshall, MI 49068
Phone (269) 789-6700 Fax (269) 781-8340
www.marshallexcelsior.com
MER471 PLUS KIT