Section 1 General Information; A Introduction; B Warranty; C Model Identification - Bradford White OmniTech BONH1250 Installation And Operation Instructions Manual

O T
MNI HERM
Commercial Boiler / Water Heater OCH & OCV with Laars Linc Control

SECTION 1 General Information

1.A Introduction

 ASME "H" stamp (OCH)
 ASME "HLW" stamp (OCV)
This manual provides information necessary for the
 160 psi maximum working pressure
installation, operation, and maintenance of Bradford
White OmniTech appliances. Read it carefully before  Certified for Category II & IV vent
starting the installation.
 Cat IV horizontal or vertical direct vent
 Cat IV vent & air pipe lengths of up to
All application and installation procedures should
be reviewed completely before proceeding with the
100 equivalent feet (each)
installation. Consult the Bradford White factory, or local
 Indoor / outdoor
factory representative, with any problems or questions
 Low NOx system exceeds the
regarding this equipment. Experience has shown that
most stringent NOx regulations
most operating problems are caused by improper
 Sophisticated gas/air valve allows
installation.
for constant control of combustion
OmniTech is protected against over pressurization. A
 Stainless steel heat exchanger
pressure relief valve is included with each OmniTech.
with welded construction
Some OmniTechs may require that the PRV be installed
 Electronic PID modulating control with
prior to filling the system. Refer to Figures 1-7 for PRV
large touchscreen and color display
locations.
1 2 3 4
1 2 3
B O C
O C
Series
Bradford White
OC - OmniTherm
OC- Cat I I / I V
Cat II & IV
Usage
H - Hydronic
V - Volume Water
X- std OCH, 75psi PRV, H-Stamp
W- std OCV, 125psi PRV, HLW-Stamp
A- 30psi PRV
B- 50psi PRV
C- 60psi PRV
D- OCV 75psi PRV
E- OCH 125psi PRV
F- 150psi PRV
G- Flange kit & 30psi PRV
H- Flange kit & 50psi PRV
J- Flange kit & 60psi PRV
K- Flange kit & 75psi PRV
L- Flange kit & 125psi PRV
M- Flange kit & 150psi PRV
®
OmniTherm - Category II / IV Vent
Standard Features
 Multiple, independent heat demands
 Sealed combustion chamber
 Pre-mix stainless steel burner
 Control cascades with up to
eight OmniTherm OCH / OCV units
 VARI-PRIME boiler pump control
with fixed delta T control for
variable flow through boiler (OCH)
 Accepts 4-20ma or 0-10VDC
external modulation or external
set point control
 Modbus RTU & BACnet MSTP
on board
 Multiple pump control, each with delay
 Indirect DHW priority (OCH)
 Domestic water sensor
Model Nomenclature
5 6 7 8 9
4 5 6 7 8
Size / MBH Fuel
1 2 5 0 N- Nat
1 5 0 0
1 7 5 0
2 0 0 0
2 5 0 0
3 0 0 0
Waterway Options
N- OCV w/ H-Stamp, 30psi PRV
P- OCV w/ H-Stamp, 50psi PRV
R- OCV w/ H-Stamp, 60psi PRV
S- OCV w/ H-Stamp, 75psi PRV
T- OCV w/ H-Stamp, 125psi PRV
U- OCV w/ H-Stamp, 150psi PRV
2- Flange kit, OCV H-Stamp, 30psi PRV
3- Flange kit, OCV H-Stamp, 50psi PRV
4- Flange kit, OCV H-Stamp, 60psi PRV
5- Flange kit, OCV H-Stamp, 75psi PRV
6- Flange kit, OCV H-Stamp, 125psi PRV
7- Flange kit, OCV H-Stamp, 150psi PRV
Customer Service and Product Support:
20
Industrial Way, Rochester, NH, USA 03867 • 603.335.6300 • Fax 603.335.3355
Headquarters:
9 Brigden Gate, Halton Hills, Ontario, Canada L7G 0A3 • 905.203.0600 • Fax 905.636.0666
www.Laars.com

1.B Warranty

Bradford White OmniTechs are covered by a limited
warranty. The owner should complete the warranty
registration at www.BradfordWhite.com.
All warranty claims must be made to an authorized
Bradford White representative. Claims must include the
serial number and model (this information can be found
on the rating plate), installation date, and name of the
installer. Shipping costs are not included in the warranty
coverage.

1.C Model Identification

Consult the rating plate on the unit. The following
information describes the model number structure.
10
9
Construction Electrical System
X- Standard A- 120V, single phase (1250-2000)
J- CSD-1 B- 220/240V, single ph (1500-2500)
C- 208V, single phase (1500-2500)
D- 208V, three phase (2500-3000)
E- 480V, three phase (2500-3000)
F- 600V, three phase (2500-3000)
X- None
A- Gateway, BACnet IP
B- Gateway, LONworks
C- Alarm bell
D- Auto & manual
high limits
E- Gateway BACnet IP
& alarm bell
F- Gateway BACnet IP
& high limits
G- Gateway BACnet IP
& alarm bell
& high limits
Printed in U.S.A. © Laars Heating Systems 20-02 Document 6120A
.
 Outdoor reset with sensor (OCH)
 High & low gas pressure switches
 Vent temperature cutoff
 Normally open alarm contact
 Air filter
 Water flow switch
 Temperature & pressure gauge
 Low water cutoff
 75 psi (517kPa) ASME rated
pressure relief valve (OCH)
 125 psi (861kPa) ASME rated
pressure relief valve (OCV)
 Groove lock fittings
(optional flange adapter)
 Burner site glass
 10-yr limited warranty
11 12
10
Revision
1- First
Additional Options
H- Gateway LONworks
& alarm bell
J- Gateway LONworks
& high limits
K- Gateway LONworks
& alarm bell
& high limits
L- Alarm & high limits
800.900.9276 • Fax 800.559.1583
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