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Inadequate or improper suspension of the tube heater can result in collapse of
the system, property damage, and personal injury or death. It is the installer's
responsibility to ensure that the hardware and structural supports from which the heater
is suspended are sound and of adequate strength to support the weight and expansion
forces of the heater.
Consider that the heater will expand in length as much as ½ inch (12.5mm) or
more for every 10 ft (3 m) of system length. Typically, the greater the firing rate, the
greater the expansion.
Survey the available structural supports, considering the system configuration
and heat requirements of the area to establish the optimum heater location. Locating a
heater directly under joists or beams, or installing supplemental steel support rail or
angle iron can substantially reduce labour and materials. Hardware with a minimum 40
lbs workload must be used at each heater suspension point. Connect the structure
using typical hardware as illustrated below or by other mechanically sound means.
1. All gas piping and connections shall be made in accordance with local codes and
CAN/CGA B-149 or ANSI standard Z223.1.
2. Connect the burner to gas supply with flexible gas connector.
3. A drip leg must be installed in the gas line at the heater inlet connection tee
followed by a pipe drop to the heater. Failure to provide a drip leg could result in
condensation and foreign matter passing into the gas valve. Failure to install a
drip leg in the gas line can cause property damage, injury or death and will void
the heater warranty.
C
: Correct inlet pressure is vital to efficient operation of heaters. Refer to the
AUTION
rating plate and, if necessary, consult Gas Company.
SUSPENDING THE SYSTEM
WARNING
GAS PIPING
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