(
Where
a continuous
or
intermittent
back
draft
codes
as
is
the
practice
of
venting
gas
fired
is
found
to
exist,
the
cause
must
be
deter--
equipment
to
the
duct
work
of
ventilating
mined
and
corrected.
systems.
Failure
to
correct
back
drafts
may
cause
air
Where
a
separate
flue
connection
is
not
and
unsafe
I
conditions.
available
and
the
flue
pipe
from
the
boiler
must
be
connected
to
a common
flue
with
a
A
special
flue
cap
may
be
required.
If
the
coal
or
oil
burning
furnace
the
flue
pipe
back
draft
cannot
be corrected
by
the
normal
should
enter
the
common
flue
or
chimney
at
methods
or
If
a suitable
draft
cannot
be
ob-
a
point
ABOVE
the
flue
pipe
from
the
coal
tained,
a
blower
type
flue
gas
exhauster
or oil
furnace.
must
be
employed
to
assure
proper
venting
and
correct'combustion.
Where
two
or
more
appliances
vent
into
a
common
flue,
the
area
of
the
common
flue
2.
Connecting
Boiler
to a Common
Flue.
Avoid
should
at
least
equal
the
area
of
the
largest
connecting
the
boiler
to
a
common
flue
or
flue
or
vent
connector
plus
50%
of
the
areas
chimney
with
oil
or
coal
burning
equipment,
of
the
additional
flue
or vent
connector.
This
practice
is
prohibited
by
many
local
WIRING
CONNECTl0NS
All
electrical
work
must
be
Installed
in
accord-
ance
with
the
National
Electrical
Code
and
must
conform
to
local
regulations.
The
electrical
connections
must
be
made
so
that
both
the
circulator
and
gas
valve
operate
simul-
taneously
when
the
thermostat
calls
for
heat.
Select
the
appropriate
wiring
diagram
for
the.
type
of system
to which
the
boiler
is
connected:
Figure
5 - Conventional
System.
Figure
6 - Zoned
System,
multiple
circulators.
JMPORTANT
-
When
zone
valves
are
used,
the
boiler
circuit
should
not
be
energized
before
the
zone
valve
water
passage
is
opened.
The
boiler
circuit
must
be
de-energized
before
the
zone
valve
is
closed.
Figure
7 - Zoned
Systems,
Honeywell
valves.
Figure
8 - Zoned
System,
White-Rodgers
valves
(2 wire).
Figure
9 - Zoned
System,
White-Rodgers
valves
(3 wire).
NOTE:
Fig's.
4,
5,
6, 7,
8 and
9:
If
any
of
the
original
wire
as
supplied
must
be
replaced,
use
only
type
1050C
thermoplastic
or
equivalent.
8
AOS
108
Roenbeck
FILED: NEW YORK COUNTY CLERK 02/20/2018 10:20 AM
INDEX NO. 190311/2015
NYSCEF DOC. NO. 337
RECEIVED NYSCEF: 02/20/2018
