Replacement Parts Guide (3)

Form P-OH/OB, Page 1
IMPORTANT
1. Always include complete heater model and serial number so
that any specification change can be considered for parts ship-
ment. It can save time and expense.
2. Specifications are subject to change without notice.
3. We reserve the right to substitute functional replacements.
4. Order either by Kit or Component Part No.
REPLACEMENT PARTS Form P-OH/OB -
Version A
Obsoletes Form 723 and Form P-OH/OB
Replacement Parts for
Model OH and Model OB
Oil-Fired Unit Heaters
ADDITIONAL REFERENCES:
• Installation Form I-OH/OB, Models OH and OB
• Replacement Parts for Reznor
®
Used Oil-Fired Models
RA, RAD, and RV, Form P-RA/RAD/RV
®
Sample of a Rating Plate
Rating Plate and Serial Nos.
Rating Plate Key:
A = Model and Size
B = Blower Motor HP
C = Input Amps
D = Minimum Circuit
Ampacity (Amps)
E = Maximum Unit Fuse
(Amps)
F = Fuel Type (No. 2 Oil)
G = Firing Rate (GPH)
H = Normal BTUH Input (sea
level)
I = Thermal Output BTUH
(sea level)
J = Nozzle Type (Delevan
GPH)
K = Nozzle Spray Angle
(Degrees)
L = Oil Pump Pressure (PSIG)
M = Maximum Overfire
Pressure (" w.c.)
N = External Static Pressure
(" w.c.)
O = Flue Outlet Draft (" w.c.)
P = Burner P/N (Beckett)
Q = Top Clearance (inches)
R = Side Clearance (inches)
S = Used or Not Used with
Air Ducts
Index by Page No. OH OB
Belt Guard -- 4
Blower and Components -- 4
Blower Guard -- 4
Burner Assembly 6 6
Cabinet Parts 2-3 2-4
Draft Booster Rela
y
Kit
(
O
p
tion DH1
)
77
Draft Regulator 2-3 2-3
Electrode Assembly 6 6
Electrical Boxes & Components 7 7
Fan and Components 3 3
Fan Control/Limit Control Assembly 5 5
Gas ke t
(
Combustion Chamber/Heat Exchan
g
er
)
55
Hanger Kit (Same as Option CK10) 8 8
Heat Exchan
g
er/Combustion Chamber Assembl
y
55
Ignition Controller 6 6
Limit Control/Fan Control Assembly 5 5
Motor, Blower or Fan 3 4
Motor, Burner 6 6
Nozzle 6 6
Outside Combustion Air Kit
(
O
p
tion DE1
)
88
Paint 8 8
Pump, Booster (Option DA1) 7 7
Pump, Burner 6 6
Serial No. 1-2 1-2
Stand
(
O
p
tion ST1
)
8-
Switch, Blocked Vent
(
CSA onl
y)
77
Switch, Booster Pum
p
Pressure
(
O
p
tion DF1
)
77
Switch, Main Control 7 7
Tank, 250-gallon (Model OT250) 8 8
Thermostat (Option CL1) 7 7
Transformer 6 6
Valve, Safety (Option DC1) 7 7
Valve, Solenoid (Option DD1) 7 7
Vertical Louvers ( Option CD1) 8 8
REZNOR
MERCER, PA., U.S.A. 16137
MADE IN MEXICO
OIL FIRED UNIT HEATER
FOR INDUSTRIAL/COMMERCIAL USE ONLY
FOR USE WITH INTEGRAL GROUP 1 OR 2 PRIMARY SAFETY CONTROLS.
M ODEL [ A
]
OIL NOT HEAVIER THAN NO.2
SERIAL NO.
[ B
]
HP
USE COPPER CONDUCTORS ONLY
115 VOLTS 1 PH 60 HZ
[ C
]
AMPS
MINIMUM CIRCUIT AMPACITY
[
D
] AMPS
MAXIMUM UNIT FUSE
[
E
] AMPS
TYPE OF OIL
[
F
]
FIRING RATE
[
G
] G.P.H.
INP UT
[
H
] BTU/HR
THERMAL OUTPUT CAPACITY
[
I
] BTU/HR
NOZZ LE TYP E; DELEVAN [
J
] G.P .H. [
K
] DEGREES TYPE B
OIL P UM P P RESSURE [
L
] PSIG
MAXIMUM OVERFIRE PRESSURE [
M
] IN.W.C.
EXTERNAL STATIC PRESSURE [
N
] IN.W.C.
FLUE OUTLET PRESSURE RANGE (DRAFT) [
O
] IN.W.C.
BURNER PART NUMBER [
P
] BECKETT
THIS UNIT IS FOR INSTA LLA TION SUSP ENDED FROM A CEILING
WITH CLEARANCES TO COMBUSTIBLES MATERIALS NO LESS THAN...
TOP - [
Q
] B OTTOM - 6" SIDES - 18"
REAR - [
R
] FRONT - 48" FLUE P IP E - 18"
IN CANADA, REFERENCE CSA B139-M91 FOR INSTALLATION IN GARAGES, ETC.
IN USA, INSTALL UNIT IN ACCORDANCE WITH THE FOLLOWING STANDARDS;
ANSI/NFPA 409-1990 FOR AIRCRAFT HANGARS
ANSI/NFPA 88A-1991 FOR PARKING STRUCTURES
ANSI/NFPA 88B-1991 FOR REPAIR GARAGES
THIS UNIT [
S
] WITH AIR DUCTS.
THIS UNIT IS NOT FOR USE WIT H A IR FILTERS.
CSA Certified to CSA/CAN B140.4 1974
OR
UL Certified to UL731 (Rating plate
displays either CSA or UL Logo.)
Model
OH
Model OH has a fan for air delivery; Model OB has a blower.
Manufacture of Model OB was discontinued April 2006.