CAC / BDP BW4 Installation Instructions Manual Download

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For BW4RAH models equipped with Riello burners:
There are two different Riello burners used on the BW4RAH

boilers, the F5 and F10 burner. The BW4RAH000280AAAA is
shipped with one additional nozzles to fire the F10 burner at the

next alternate lower input listed on the rating plate. The

BW4RAH000210AAAA and BW4RAH000140AAAA are
equipped with F5 burners and shipped with two additional

nozzles to fire the boilers at the next lowest inputs listed on the
rating plate.
The BW5B and BW5R models are the same as the BW4B and

BW5B models, except the tankless water heater is factory
installed.
Refer to Tables 1 and 7 (Beckett) or Table 8 (Riello) for
additional oil burner information. Refer to the boiler product data

sheet for the correct accessory low--fire kit.

General Information

Boilers with the same number of sections are identical to each
other except for their firing rate and/or type of burner. The firing

rate is determined by the nozzle size used in the oil burner and the
oil pressure at the nozzle. For example, models BW4RAH091,

BW4RAH105, and BW4RAH140 are the same boiler, without a

tankless coil. They all have a Riello oil burner fired at a different
input rate. Models BW5RAH245 and BW4RAH280 are the same

boiler, with a tankless coil. They both have a Riello oil burner
fired at a different input rate.

1. Check to be sure you have selected the right size boiler

with the proper capacity. The I=B=R rating of the boiler

selected should be greater than or equal to the calculated
peak heating load (heat loss) for the building or area(s)

served by the boiler and associated hot water heating
systems. (See Table 1.) Any heat loss calculations used
should be based on approved methods.

2. Boiler must be supplied with the proper oil supply and oil

piping, sufficient fresh combustion air, and a suitable

electrical supply.

3. Boiler must be connected to a suitable venting system and

a piping system adequate to distribute the heating load.

4. A thermostat must be properly located and installed for

control of the heating system.

If there are any doubts as to the various requirements, check with
local authorities and obtain professional help where needed. The

Operation Instructions, Final Checks and Adjustments and

Maintenance sections in this manual are vital to the proper and
safe operation of the heating system. Take the time to be sure they

are all done.

Locating the Boiler

If boiler is part of a planned heating system, locate it as close as
possible to where it is shown on plan. If boiler is to be part of an

existing system, it is usually best to put it where the old one was.

If location is to be changed, additional materials as well as an
adequate base will be required. The following rules apply:

1. The boiler must be level.
2. Use a raised base if floor can become wet or damp.
3. These boilers must have a non--combustible base if

installed on a combustible floor. Two inch concrete patio

blocks or a 2--in. Cladlite--pad may be used.

4. The vent pipe connection should be as short as possible.
5. Maintain clearances for fire safety as well as servicing.

Refer to Fig. 3 for minimum clearances. An 18--in.
clearance must be maintained at a side where passage is

required to access another side for cleaning, servicing,
inspection, or replacement of any parts that normally may
require such attention. Boilers must be installed at least

6--in. from combustible materials on all sides and above.
Allow at least 24--in. front clearance for servicing. Allow

at least 18--in. right--side clearance for servicing boilers
equipped with a tankless coil.

6. Fresh air for combustion must be available at front of

boiler. Fresh air for ventilation must be available to front
AND rear of boiler. Air passages must be free of

obstructions at all times. Ventilating and combustion air
must enter boiler room without restrictions.

7. Be sure installation is in accordance with the requirements

of local authorities having jurisdiction. Compliance with
these regulations is required. In the absence of local codes,

follow NFPA 31--Installation of Oil Burning Equipment.

INSTALLATION

Installation Requirements

Refer to Fig. 4 for the basic requirements of a typical installation.

NOTE