Eclipse RatioAir v1 - Design Guide No. 115, 2/14/05
11
Control Motor
Select a control motor. Standard control motor options
include various models which Eclipse will mount to the burner.
RatioAirs can be ordered with control motor bracket and
mounting hardware only. Customer supplied control motors
must conform to the these specifications:
rotation not to exceed 2 rpm.
minimum torque of 25 in-lb. (2,8 Nm)
90° stroke.
continuous modulating or high/low modulating control.
reversible direction of rotation.
certain applications may require control motors with a
limit switch or switches if:
- the burner capacity is to be limited to fit an application.
- the chamber is to be fired with positive or negative
pressure.
- the chamber pressure is outside the range -1 w.c.
to +1 w.c. (-2,5 to 2,5 mbar)
- there is a need to indicate a high and/or low fire air
butterfly valve (BV) position.
Burner Configuration
Select configuration.
Gas Pipe Connection
Select the gas pipe connection including the pipe thread type and
the turndown required.
The piping, burner gas inlet, and ratio regulator are threaded
using the customer selected pipe thread option.
The high turndown option includes a ratio regulator with an
adjustment for lower inputs.
Flame Supervision
Determine if a flame rod or an ultraviolet (U.V.) scanner will be
required. Flame rods are available on model RA0025, RA0040,
RA0075 and RA0100 burners with alloy or SiC tubes. All
other options and models require UV scanners. If a U.V.
scanner is required, it must be ordered separately.
Warning:
A U.V. scanner could possibly detect another burners flame
if it is in the line of sight, and falsely indicate flame presence.
Inverted
right hand piping
Upright
left hand piping
Upright
right hand piping
Configuration selections:
Inverted
left hand piping
