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Appliance Details; Features; Specifications (Technical Data) - Bosch 940 ESO Manual

940 eso - natural gas / 940 eso - liquefied petroleum (lp) gas
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3

Appliance details

3.1

Features

Parts
• Key Pad interface control.
• High power pre-mix compact burner with low NOx emissions.
• Modulating Gas Valve with constant gas:air ratio control.
• Modulating water valve for improved comfort and temperature
control.
High quality materials for long working life
• Copper heat exchanger.
• High efficiency Ceramat Burner.
• Compact space saver: mounts on a wall with a supplied bracket.
Features
• Easily removable one-piece cover.
• On/Off and Temperature control switches.
• Reset button.
• Program button (Selectable temperature default).
• Failure codes for easy diagnostics and repair.
• Real-time diagnostics for troubleshooting/informational purposes.
• Built in freeze prevention.
Note: The freeze prevention kit is designed to provide protection for the
water heater down to approximately 5°F for short term conditions only.
It will not protect the appliance in areas where the temperature is
routinely expected to be below freezing.
- The freeze prevention kit will not protect plumbing outside the
appliance from freezing. Precautions should be taken.
Accessories (Bosch part #)
• Isolation Valve Kit (7738003449)
• Optional wireless remote control to operate with the appliance
(TSTAT2)
• Cascading kit (7 709 003 962)
• Outdoor kit (7709003913)
• Gas conversion kit (8719002176)
• Pipe Cover (PTPCES)
• High temperature kit (7736500074)
• Recess box kit (7736500043)
• Pressure relief valve (7 738 001 152)
• Horizontal vent kit (4TWHVK3SII)
BOSCH is constantly improving its products, therefore
specifications are subject to change without prior
notice.
1) 4TWHVK3S vent kit is compatible with this appliance but requires the purchase
of an additional 12" piece of straight pipe to meet minimum vent length
requirements. The aluminum flex piping included with this kit is not permissible
for use with this appliance.
940 ESO
1)
3.2

Specifications (Technical data)

Approved in US/Canada
Technical characteristics
Capacity
Maximum flow rate at a 25 °F
(13.9 °C) rise
Maximum flow rate at a 35 °F
(19.4 °C) rise
Maximum flow rate at a 45 °F
(25 °C) rise
Maximum flow rate at a 55 °F
(30.6 °C) rise
Maximum flow rate at a 75 °F
(41.7 °C) rise
Maximum flow rate at a 90 °F
(50 °C) rise
Maximum output
Maximum input
Thermal efficiency (Efficiency
in %)
Minimum Input
Temperature Control
Selection range
Default temperature
Stability
Gas Requirement
Gas connection
1)
Peak load inlet gas pressure
Propane
Natural Gas
Water
Hot water connection
Cold water connection
2)
Minimum water flow
Minimum recommended
water pressure
Minimum well pressure
Water valve material
Connections:
Combustion
CO level
CO
level (set from factory)
2
Dimensions
Depth
Width
Height
Table 3
Appliance details | 7
Units
940 ESO
GPM (l/min)
13.2 (49.9)
GPM (l/min)
9.4 (35.7)
GPM (l/min)
7.3 (27.7)
GPM (l/min)
6.0 (22.7)
GPM (l/min)
4.4 (16.6)
GPM (l/min)
3.7 (13.9)
BTU/hr (kW)
160,500 (47)
BTU/hr (kW)
199,000 (58.3)
%
> 83%
BTU/hr (kW)
19,900 (5.8)
°F ( °C)
100 - 140 (38 - 60)
°F ( °C)
122 (50)
 2 ( 1)
°F ( °C)
inches
¾ "
water column
8" - 13"
water column
3.5" - 10.5"
inches
¾ "
inches
¾ "
GPM (l/min)
0.5 (1.9)
PSI (bar)
30 (2.07)
PSI
40
Polymer (PPS)
(Polypropylene
Sulfide)
Bottom of heater
 250 (measured)
ppm
%
see table 17
inches (mm)
11 ¼ (286)
7
inches (mm)
17
/
(452)
8
inches (mm)
30½ (775)
6 720 644 956 (2016/05)

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