3
A
19
5/8
″
GAGE
36
″
1
1/4
IN.
RETURN
1
1/4
IN.
SUPPLY
AQUASTAT
CONTROL
(WITHOUT COIL)
AQUASTAT
CONTROL
(WITH COIL)
TANKLESS
HEATER
1/2
IN.
N.P.T.
9
″
C
B
3/4
IN.
ASME
RELIEF
VALVE
FRONT
SIDE
REAR
A96152
Fig. 2 -- Dimensional Drawing (See Table 1 for additional information)
FIRE, EXPLOSION HAZARD
Failure to follow this warning could result in personal
injury, death and or property damage
DO NOT USE GASOLINE CRANKCASE DRAININGS
OR ANY OIL CONTAINING GASOLINE.
!
WARNING
INTRODUCTION
Check to be sure boiler size is correct before starting installation.
See rating and capacity table shown in Fig. 2 and Table 1a and
1b. Check rating plate on right side of boiler.
The boiler must be supplied with the proper oil, fresh air for
combustion, and a suitable electrical supply. Boiler must also be
connected to a suitable venting system and an adequate piping
system. Finally, a properly located thermostat is needed for
control of heating system. If there are any doubts as to the various
requirements, check with local authorities and obtain professional
help where needed. The Operating Boiler Instructions and Final
Checks and Adjustments sections later in this document are vital
to the proper and safe operation of the heating system. Take time
to be sure they are all done.
The following steps are all necessary for proper installation and
safe operation of boiler:
1. LOCATING THE BOILER
2. OIL SUPPLY AND PIPING
3. FRESH AIR FOR COMBUSTION
4. PIPING CONNECTIONS
5. CHIMNEY AND VENT PIPE CONNECTIONS
6. ELECTRICAL WIRING
7. THERMOSTAT LOCATION
8. CHECKING AND ADJUSTING
9. MAINTENANCE
FIRE,
EXPLOSION,
ELECTRICAL,
CARBON
MONOXIDE POISONING HAZARD
Failure to follow this warning could result in property
damage, personal injury, or death.
Improper installation, adjustment, alteration, service
maintenance, or use can cause carbon monoxide poisoning,
explosion, fire, electrical shock, or other conditions which
may cause personal injury or property damage. Consult a
qualified installer, service agency, fuel oil supplier, or your
distributor or branch for information or assistance. The
qualified
installer
or
agency
must
use
only
factory--authorized and listed kits or accessories when
modifying this product.
!
WARNING
Explanation of Model Numbers and Rating Plate
Each model number except for the BW4(5)RAH280ABAA has 3
possible firing rates depending on which nozzle or burner is
installed. The model number represents the burner installed in the
boiler and the largest possible input for the boiler. The
BW4(5)RAH280ABAA can only be fired at an input of 280,000
Btuh or 245,000 Btuh.
For example, a BW4BAH000140ABAA has a Beckett burner
and a maximum input of 140,000 Btuh. A BW4RAH000140 has
a Riello burner and a maximum input of 140,000 Btuh. The
rating plate for each model shows the possible firing rates. Boilers
come shipped with the largest nozzle installed. By changing
nozzles, the BW4BAH000140ABAA firing rate can be changed
to 91,000 or 105,000 Btuh input.
For BW4BAH models equipped with Beckett burners:
The BW4BAH000280ABAA is shipped with 2 additional
nozzles to fire the Beckett burner at the alternate inputs listed on
the
rating
plate.
The
BW4BAH000210ABAA
and
BW4BAH000140ABAA are shipped with one additional nozzle
each, to fire the Beckett burner at the next lowest inputs listed on
the rating plate. To fire the BW4BAH000210ABAA and
BW4BAH000140ABAA at the lowest inputs listed on the rating
plate, an accessory low--fire kit for each boiler, not included with
the boiler, is required. The low--fire kits include the alternate size
nozzle and the alternate burner end cone to fire the burners on
these models at the lowest inputs for those models.
BW
4
/BW
5
