250SX Technical Support
Online Tech Support from Bosch Water Heaters
 
   
   Specifications
Specifications

Power Input

Natural Gas: 35,000 - 175,000 Btu
LP Gas: 31,000 - 175,000 Btu

Minimum Flow to Activate

0.8 gallons per minute (gpm)

Flow Rates

45°F rise @ 6.4 gpm
55°F rise @ 5.3 gpm
65°F rise @ 4.5 gpm
75°F rise @ 3.9 gpm
90°F rise @ 3.3 gpm

Energy Factor

.80

Thermal Efficiency

87%

Dimensions

Height: 23.5"
Width: 15.75"
Depth: 8.5"

Weight

47 lbs.

Modulating Gas Valve

Yes

Electronic Ignition

Yes (120v plug in)

Optional Accessories

Vent Kit (AQ3)*
Remote Thermostat (TSTAT2)

*Required when venting horizontally.

   Installation Specifications

Gas Connections ¾" Male NPT
Water Connections ¾" Male NPT
Natural Gas Pressure Minimum: 5" WC
Maximum: 14" WC
LP Gas Pressure Minimum: 11" WC
Maximum: 14"
Water Pressure Minimum: 30 PSI
Maximum: 150 PSI
Electrical Supply 120 volt (plugs in)
 Exhaust Vent Size 3" (stainless)
Combustion Air Pipe Size 3" PVC/Alum./Galv.
Vent Termination

Vertical OR Horizontal

 

Horizontal Venting
tech_specs_250sxHvent.gif

Vertical Venting
tech_specs_250sxVvent.gif

   
250SX Tech Support
Bosch 250SX Model
Stainless Steel Venting

Z-Flex
Z-Vent III
www.z-flex.com
800-654-5600

Protech Industries
FasNSeal
www.protechinfo.com
800-766-3473

Heat-Fab*
Saf-T Vent EZ Seal
www.heatfab.com
800-772-0739

*A special appliance adaptor is required for the 250SX to work with Heat-Fab venting (Part # 9301BSH).

 

Note: Specifications and product information subject to change without notice.

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