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B4 Volume Water Heater
SECTION 1.
General Information
1.1 Introduction
This manual provides information for the
installation and operation of Bradford White volume
water heaters. It is strongly recommended that all
application and installation procedures be reviewed
completely before proceeding with the installation.
Consult the Bradford White factory, or local factory
representative, with any problems or questions
regarding this equipment. Experience has shown that
most problems are caused by improper installation.
Some accessory items are shipped in separate
packages. Verify receipt of all packages listed on the
package slip. Inspect everything for possible damage
upon delivery, and inform the carrier of any shortages
or impairments. Any such claims should be filed with
the carrier. The carrier, not the shipper, is responsible
for shortages and damage to the shipment whether
visible or concealed.
All volume water heaters must be installed in
accordance with the procedures outlined in
this manual. The warranty does not apply to
heaters not installed or operated in accordance
with these procedures. Consult local building
and safety codes before proceeding with
work. The installation must conform to the
requirements of the authority having jurisdiction
or, in the absence of such requirements, to
the latest edition of the National Fuel Gas
Code; ANSI Z223.1, National Electrical Code
ANSI/NFPA 70 and/or in Canada CSA B149.1
requirement.
When required by the authority having
jurisdiction, the installation must conform to
the Standard for Controls and Safety Devices
for Automatically Fired Boilers, ANSI/ASME
CSD-1. Any modification to the water heater,
its gas controls, gas orifices, wiring or
draft diverter may void the warranty. If field
conditions require such modifications, consult
factory.
WARNING
1.2 Heater Identification
Consult rating plate on the heater. The following
example simplifies the heater identification.
1
2
3
B4
1670
I
1.
Basic heater model.
2.
Input rate X 1000 BTU/hr.
3.
Indoor (I) or Outdoor (E) installation.
4.
Gas type: Natural (N) or Propane (P).
5.
Ignition system: I.I.D. (09) or continuous pilot
(16).
6.
Firing rate: On/Off (C), 2-stage (K), 4-stage (L).
Bradford White commercial water heaters are
available in two models: an indoor version and an
outdoor version. Both are available from the factory
(see Figure 1).
1.3 Flow Requirements
For proper operation, all low volume hot water
heaters must have continuous flow through the heat
exchanger when firing. The system pump must be
capable of developing sufficient pressure to overcome
the resistance of the heater plus the entire circulating
system at the designed flow rate.
Pump
121⁄4
(311)
Gas
Conn.
A
V
101⁄4
(260)
Top
B
Pump
303⁄4
(781)
19
(483) Gas
Inlet
12
A
(305)
Front
Figure 1. Heater Configuration.
Page 3
4
5
6
N
09
C
29
/
5
8
(752)
C
Out
In
58
Rear
(1473)
173⁄4
29
(197)
(737)
281⁄4
17
(718)
(432)
Side
Out
In
61
(1549)
14
(356)
73⁄4
(197)
413⁄4
4
(1060)
(102)
Side
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