Space Ray ETS Series - Manual (Page 21)

Form 43343300
-20- May 2013
9.0) TYPICAL SUSPENSION METHODS
Burner must be secured to the mounting flange with nuts.
All materials used to suspend the heater must have a minimum working load
of 115 lbs.
All “S” Hooks must be crimped closed.
Never use the heater to support a ladder or other access equipment.
Failure to do so may result in death, serious injury or property damage.
SUSPENSION HAZARD
Various means of suspending the heater can be used. See the following drawings for typical examples.
1. Use only noncombustible materials for suspending hangers and brackets.
2.
A minimum No. 2 chain with a working load limit of 115 lbs. is required.
3. Turnbuckles can be used with chains to allow leveling of the heater. All “S” hooks and eye bolts must be
manually crimped closed by the installer.
4. When using rigid means for heater suspension (rod, flat bar, etc.) provide sufficient lengths or swing joints to
compensate for expansion. See Figures b and c.
5.
Heaters subject to vibration must be provided with vibration isolating hangers.
6. Heaters must not be supported by gas or electric supply lines and must be suspended from a permanent
structure with adequate load capacity.
Space-Ray recommends that the tube sections be suspended using chains with turnbuckles. This will allow slight
adjustments after assembly and heater expansion/ contraction during operation.
If a “trapeze” method is used for tube support/hanger brackets (shown below), the minimum chain length for the
two connecting chains is 36” to minimize any vibration that might be generated by the draft inducer assembly. If
these chains must be less than 36”, then do not use the trapeze method and, instead, use individual chains on
each tube support/hanger bracket.
Minimum
No. 2 Chain
a.
S-Hook crimped
closed (typical)
Wire Hanger
b.
3/16” x 1”
wideFlat Bar
c.
Threaded
Rod
Turnbuckle
Eyebolt
Eyebolt
Turnbuckle
Minimum
No. 2 Chain
Eyebolt
d.
Wire
Hanger
36” (91cm) Minimum
Tube Support/
Hanger Bracket