Chapter 5
Installation
cover or be installed in an enclosure. If the regulator is mounted at or below the floor
level of the vehicle, it must be installed in an enclosure. The enclosure must be
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sufficient size to allow connection to and replacement of the regulator
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vapor tight to the interior of the vehicle
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have 1 in2 or larger vent opening within 1 in of the bottom of the compartment and 2
in below the regulator vent opening
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contain no flame or spark producing equipment
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designed and mounted with as much ground clearance as practical
3) Install all hoses and fittings
Attach all fittings to the regulators, heater, and the tanks.
The POL fitting attached to the tank must have a built-in excess flow valve. All fittings
including bulkheads must have wrench flat or similar way that each fitting can be
individually tightened or loosened (close nipples are not allowed). The threads in fittings
must be a tapered pipe thread and sealed with a joint sealant approved for this use.
Attach the hoses as necessary. All hose assemblies must carry a CSA/UL approved label
and be 36” or shorter.
4) Install the copper propane line
The copper line should be run as directly as possible between components while
maintaining adequate clearance from the exhaust system and areas with a high risk of
impact damages such as above the tires. Once the route for the copper tubing is
determined, any necessary holes in the frame or floor supports can be drilled and installed
with grommets and the tubing can be pulled into place, trimmed to length, deburred,
fitted with the correct nut, flared, and attached. The 3/8” copper line must
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meet either the specification for either ASTM B 88 (Type K or L) or ASTM B 280.
In Canada installations, the tubing must additionally be marked and plastic or rubber
coated in accordance with CAN/CSA-B149.5-05.
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Have no joints and can not be extended in any way
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be protected by grommets or another method with similar protection when traveling
through bulkheads or portions of the trailer frame, be securely clamped to the front
wall of the trailer, and otherwise supported and secured to minimize the effects of
vibration
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be installed in a protected location that is visible for inspection. It cannot be installed
inside the frame or any pipe or tubing.
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not be installed inside the vehicle except as necessary to hook up to the heater. It
should not be closer than 4 inches to any part of the exhaust system, run directly
above any tire, or within 6” of any tire.
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Not be in contact with any electrical wiring
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be connected so that slight shifting and the expansion or contraction that occur with
temperature do not cause stress on the fittings
5) Test the System for Leaks
The propane system must be tested for leaks before the operation of the heater is tested or
it is placed into operation. This leak test must use a pressure gauge or manometer. If a
leak is found, it must be located using a combustible gas indicator, suitable leak detection
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