Optitherm
WATER HEATER
Submittal Sheet
BWH-opti-6-16
Optitherm COMMERCIAL
GAS WATER HEATER
JOB NAME: Click here to enter text.
LOCATION: Click here to enter text.
ARCH./ENGR. Click here to enter text.
WHOLESALER Click here to enter text.
MECH. CONTRACTOR Click here to enter text.
MODEL NO. Click here to enter text.
TYPE GAS: Click here to enter text.
BTU/HR INPUT Click here to enter text.
RECOVERY RATE IN GPH: Click here to enter text.@ Click here to enter text.°F RISE
NOTES: Click here to enter text.
STANDARD FEATURES
Modulating Pre-Mix Blue Flame Burner
125,000-150,000-199,000 BTU 99 gallon models fully
modulate to 60,000 BTU
199,999-250,000-299,999 BTU 100 gallon models fully
modulate to 76,000 BTU
300,000-399,999-500,000 BTU 125 gallon models fully
modulate to 135,000 BTU
Dual Helical-Fin Multi-Stage Heat Exchanger
Up to 98% Thermal Efficiency
Automated Cathodic Corrosion Protection System
NO SACRIFICIAL ANODE RODS
Five-Year Limited Tank/Heat Exchanger Warranty
Ultra Low NOx Operation (20 ppm / 14 ng/J)
Submerged Combustion Chamber
LCD User Interface with Optional BMS Interface
PVC or CPVC Power-Vent or Power-Direct-Vent
Glass-Fused-to-Steel Water Vessel/Heat Exchanger
Low-Fire Ignition for Smooth, Easy Light Offs
Stealth Quiet™ Operation
Optitherm Commercial
Gas Water Heater Dimensions & Specifications
OT125, OT150, OT199
OT200, OT250, OT299, OT300, OT400N, OT500
Dimensions and Connections
Dimensions in Inches (cm)
Model
A
B
C
D
E
F
78.50 28.00 63.50 11.25
9.19 62.43
OT125N
(199) (71)
(161) (29)
(23) (159)
78.50 28.00 63.50 11.25
9.19 62.43
OT150N
(199) (71)
(161) (29)
(23) (159)
78.50 28.00 63.50 11.25
9.19 62.43
OT199N
(199) (71)
(161) (29)
(23) (159)
67.25 32.00 51.53 11.43
9.43 50.18
OT200N-A*
(171) (81)
(131) (29)
(24) (127)
67.25 32.00 51.53 11.43
9.43 50.18
OT250N-A*
(171) (81)
(131) (29)
(24) (127)
67.25 32.00 51.53 11.43
9.43 50.18
OT299N-A*
(171) (81)
(131) (29)
(24) (127)
78.50 32.00 62.78 11.43
9.43 61.43
OT300N-A*
(199)
(81)
(159)
(29)
(24) (156)
78.50 32.00 62.78 11.43
9.43 61.43
OT400N-A*
(199)
(81)
(159)
(29)
(24) (156)
78.50 32.00 62.78 11.43
9.43 61.43
OT500N-A*
(199)
(81)
(159)
(29)
(24) (156)
* Change “N” to “LP” to designate Liquid Propane Fuel
T&P valve and brass drain valve factory installed.
Standard Voltage (all): 120V, 60 Hz, 1P
Maximum Working Pressure: 150 psi (1034 kPa)
All Bock products meet or exceed current ASHRAE standards.
NSF/ANSI 5
(Specific Models)
www.bockwaterheaters.com
110 South Dickinson Street, Madison, Wisconsin 53703
Cold
NPT
Hot
NPT
Gas
NPT
Air
Intake
PVC
G
H
74.25
(189)
74.25
(189)
74.25
(189)
62.75
(159)
62.75
(159)
62.75
(159)
74.00
(188)
74.00
(188)
74.00
(188)
36.43
(93)
36.43
(93)
36.43
(93)
1.5”
1.5”
¾”
3”
1.5”
1.5”
¾”
3”
1.5”
1.5”
¾”
3”
N/A
2”
2”
1”
4”
N/A
2”
2”
1”
4”
N/A
2”
2”
1”
4”
N/A
2”
2”
1-1/2”
4”
N/A
2”
2”
1-1/2”
4”
N/A
2”
2”
1-1/2”
4”
Exhaust Shipping
Vent
Weight
PVC LBS (kg)
670
3”
(304)
670
3”
(304)
670
3”
(304)
1,110
3”
(503)
1,110
3”
(503)
1,110
3”
(503)
1,200
4”
(544)
1,200
4”
(544)
1,200
4”
(544)
Toll Free 800-794-2491 • Phone 608-257-2225 • Fax 608-257-5304