Model 4
1500 - 6000 MBTU/hr
Rev. 03-08
Section B2-34
3.
The combustion safeguard control
shall be microprocessor
based,
with
self–diagnostics, non–volatile memory,
and a
message center
with a
vocabulary
of 42
different
messages.
Messages
shall scroll
across
an
alpha–numeric display
and
provide sequence status
and flame failure
mode
information.
4.
The combustion safeguard control
shall
have
a fixed operating
sequence incapable
of
being manually
altered.
The
sequence
shall
include
start,
pre– purge,
pilot and main fuel ignition run,
and
post–purge
cycles.
5.
The controller
shall be the
non–recycle
type for maximum
safety
that will shut down the
burner
and indicate as a
minimum the
following
trip
functions:
pilot failure, main flame
failure, high and low fire
proving
switch faults, running
interlocks open, false
flame
signal,
and fuel
valve
open.
6.
The controller
shall
have
a
test/run
switch. It will allow
interruptions
to
sequence
just after
pre–purge, during
pilot
ignition trial, and during run
cycles,
for
adjustments
to firing
rate motor,
damper linkages,
and pilot flame for turndown
tests.
7.
The controller
shall
also have
the
following functions:
display
history
of
operating hours
and totals of
completed
on–off
cycles; provide
a
constant
flame
signal strength read–out;
and
have provisions
for
remote display
capability and Modbus
communication.
PART
3
EXECUTION
3.1
SHOP
TESTS
A.
The pressure vessel
shall be
hydrostatically tested
in
accordance
with
ASME
requirements.
B.
The
boiler will be test fired by the
manufactured,
prior to shipment,
to
verify proper
and
safe
operation.
3.2
S
HI
PMENT
A.
Pa
intin
g
1.
The entire
boiler,
base frame,
and
other components
shall be
factory
painted,
before
shipment,
using
a hard finish enamel.
2.
The
boiler
surface
shall be
cleaned/prepared
for painting using
manufacturer's specifications
and
standard
industrial painting
practices.
B.
P
r
epar
ati
o
n
1. All boiler
openings
shall be
plugged/covered
prior to shipment.
2.
The boiler
shall be skid
mounted
and
protected
with a weather
resistant
covering.
3. All
shipped loose components
shall
wrapped
in protective
material
and
packaged
in a
separate
container(s).
3.3 INSTALLATION
3.4
S
TART
–UP
A.
The
boiler
start–up
shall be
performed
by a
factory
trained
representative
and will be
done
in
accordance
with the
manufacturer's
recommended procedures.
To Next Page
Loading...
Need help?
General
