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Application's Manual

ManualsBrandsBosch ManualsPlumbingTherm 18" Natural Gas Tankless Water Heater With 199,000 BTU Max Input, Energy Star Rated, Electronic Ignition, 150 PSI Max Water Pressure, Non-Condensing, In Grey
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Data subject to change without notice | 01.2011 BOSCH THERMOTECHNOLOGY CORPORATION
THERM Tankless Water Heater Applications Manual | 11
6.2 Bosch Tankless Water Heater Specifi cations
Technical Specifi cations
Model C 1210 ES/ESC C 1050 ES 940 ES 940 ESO 830 ES
Gas input
(BTU/hr)
Min: 25,000 Min: 19,900 Min: 19,900 Min: 19,900 Min: 19,900
Max: 225,000 Max: 199,000 Max: 199,000 Max: 199,000 Max: 175,000
Minimum fl ow to activate (GPM) 0.5 0.5 0.5 0.5 0.5
Maximum fl ow rate at 35° rise (GPM) 12.1 10.5 9.4 9.4 8.3
Maximum fl ow rate at 90° rise (GPM) 4.6 3.9 3.6 3.6
Thermal Effi ciency NG: 94%
LP: 94%
NG: 92%
LP: 92%
NG: 82%
LP: 82%
NG: 82%
LP: 82%
NG: 82%
LP: 82%
Dimensions
(inches)
H: 30½
W: 17⅞
D: 11¼
H: 30½
W: 17⅞
D: 11¼
H: 30½
W: 17⅞
D: 11¼
H: 30½
W: 17⅞
D: 11¼
H: 30½
W: 17⅞
D: 11¼
Weight (lbs.) 88 74 67 67 67
Modulating gas valve yes yes yes yes yes
Ignition Electronic Electronic Electronic Electronic Electronic
Gas connection ¾" Male NPT ¾" Male NPT ¾" Male NPT ¾" Male NPT ¾" Male NPT
Water connections ¾" Male NPT ¾" Male NPT ¾" Male NPT ¾" Male NPT ¾" Male NPT
NG gas pressure
(inches of W.C.)
Min: 3.5
Max: 10.5
Min: 3.5
Max: 10.5
Min: 3.5
Max: 10.5
Min: 3.5
Max: 10.5
Min: 3.5
Max: 10.5
LP gas pressure
(inches of W.C.)
Min: 8
Max: 13
Min: 8
Max: 13
Min: 8
Max: 13
Min: 8
Max: 13
Min: 8
Max: 13
Water pressure
Static - (PSI)
Min: 30
Min (well): 40
Max: 150
Min: 30
Min (well): 40
Max: 150
Min: 30
Min (well): 40
Max: 150
Min: 30
Min (well): 40
Max: 150
Min: 30
Min (well): 40
Max: 150
Electrical supply 120VAC 120VAC 120VAC 120VAC 120VAC
Venting options direct vent
room-sealed
combustion
direct vent
room-sealed
combustion
direct vent
room-sealed
combustion
BTOK outdoor
kit included
with heater
direct vent
room-sealed
combustion
Venting diameter
(inches)
3 or 4 3 or 4 3 or 4 3 or 4 3 or 4
Vent material PVC, CPVC,
or ABS
(Schedule 40)
PVC, CPVC,
or ABS
(Schedule 40)
Stainless steel
(AL29-4C)
Outdoor vent
cap supplied
Stainless steel
(AL29-4C)
NOTE:
• C 1210 ES (residential model) has a maximum setpoint
temperature of 140°F.
• C 1210 ESC (commercial model) has a maximum setpoint
temperature of 180°F.