Carrier B Series User Manual

BOILER RATINGS AND CAPACITIES
The ratings marked "Net I=B=R Rating" indicate the amount of equivalent direct cast iron radiation each boiler will take care of under normal
conditions and thermostatic control. The Net I=B=R Steam Ratings shown are based on an allowance of 1.333 in accordance with the factors in
the I=B=R Code as published by The Hydronics Institute.
Selection of boiler size should be based upon "Net I=B=R Rating" being equal to or greater than installed radiation in sq ft. Consult manufacturer
before selecting a boiler for installations having unusual piping and pickup requirements.
Specifications and dimensions are subject to change without notice.
LOCATING THE BOILER
NOTE: This unit MUST be set on a concrete or other non-combustible material base or floor.
1. Select level location as centralized with piping system and as near chimney as possible.
2. Place crated boiler at selected location. Remove crate by pulling crate sides from top and bottom boards. When boiler is to be installed on
a combustible floor, a combustible floor base must be used.
This boiler must NOT be installed on carpeting.
3. Boiler is to be level. Metal shims may be used under base legs for final leveling.
4. The floor supporting boiler must be non-combustible. If it is combustible, place the boiler on a factory-approved combustible floor base.
We use a 2-in. Cladlite™ pad as a combustible floor base. These are available from your local supplier. Use a minimum 24-in. X 30-in.
pad for 2-5 section boilers and a minimum 30-in. X 30-in. pad for 6-7 section boilers. The boiler must be centered on combustible floor
base.
5. Additional clearances for service may exceed clearances for fire protection clearances shown on the unit. An 18-inch clearance should be
maintained on any side where passage is required to access another side for cleaning, servicing, inspecting, or replacement of any part that
may need attention. An 18-inch clearance is recommended on the control side for servicing.
6. Determine boiler room size. Rooms that are large in comparison with the size of boiler are defined as rooms having a volume equal to or
greater than 16 times the volume of the boiler. Where room ceiling height is greater than 8 ft, volume of room shall be figured on the basis
of 8 ft ceiling height. Determination of room size should be based on total volume of all gas fired equipment installed in that room. (See
Table 1.) Refer to section 6.3 of NFGC, Central Heating Boilers and Furnaces for further information, including approved methods for
reducing clearances in large rooms.
7. Table 2 shows minimum clearances from combustible materials.
Fig. 1—Dimensional Drawing and Boiler Ratings and Capacities
Natural Gas-Fired Steam Boilers
BOILER MODEL NUMBER
NO. OF
SECTIONS
NATURAL GAS* DIMENSIONS (IN.)
Intermittent
Ignition
with Vent Damper
Standing
Pilot
with Vent Damper
AGA
Input
MBH
Heating
Capacity
MBH
Net
I=B=R
Rating
MBH
Net I=B=R
Rating
Sq Ft
Radiation
Flue
Diameter
Width
A
BS2AAN000075ABAA BS1AAN000075ABAA 3 75 62 47 196 5 11-1/4
BS2AAN000112ABAA BS1AAN000112ABAA 4 112 91 68 283 6 14-1/2
BS2AAN000150ABAA BS1AAN000150ABAA 5 150 122 92 383 6 17-3/4
BS2AAN000187ABAA BS1AAN000187ABAA 6 187 153 115 479 7 21
BS2AAN000225ABAA BS1AAN000225ABAA 7 225 183 137 571 7 24-1/4
BS2AAN000262ABAA BS1AAN000262ABAA 8 262 214 161 671 7 27-1/2
BS2AAN000299ABAA BS1AAN000299ABAA 9 299 245 184 767 7 30-3/4
A90064
26
1
⁄
2
″
A
VENT
DAMPER
RELIEF
VALVE
LEFT SIDE RIGHT SIDEFRONT
29″
12
1
⁄
4
″
2
1
⁄
2
″ N.P.T.
PRESSURE
GAGE
LOW WATER
CUT-OFF PROBE
GAS LINE
PRESSURE
LIMIT CONTROL
2
1
⁄
2
″
TRANSFORMER
S86
GAS
VALVE
LOW WATER
CUT-OFF
2
1
⁄
2
″
GLASS
GAGE
WATER
LINE
4
3
⁄
4
″
24″36
3
⁄
8
″
—4—

Carrier B Series Specifications

General

Brand	Carrier
Model	B Series
Category	Control Unit
Language	English