Bosch C1210ESC - Tankless Water Heater Speci Cations

12
|
THERM/GREENTHERM Tankless Water Heaters
Bosch Thermotechnology Corp.Data subject to change
Applications Manual
6.2 Tankless Water Heater Speci cations
Technical Speci cations
Unit
Models
C 1210 ES /
C 1210 ESC
C 1050 ES C 950 ES 940 ES 940 ESO 830 ES
Gas input BTU/hr
Max: 225,000
Min: 25,000
Max: 199,000
Min: 19,900
Max: 175,000
Min: 19,900
Max: 199,000
Min: 19,900
Max: 199,000
Min: 19,900
Max: 175,000
Min: 19,900
Minimum  ow to activate GPM 0.5 0.5 0.5 0.5 0.5 0.5
Maximum  ow rate at 35° rise GPM 12.1 10.5 9.2 9.4 9.4 8.3
Maximum  ow rate at 90° rise GPM 4.6 3.9 3.6 3.6 3.6 3.6
Thermal ef ciency %
NG: 94
LP: 94
NG: 94
LP: 94
NG: 93
LP: 93
NG: 82
LP: 82
NG: 82
LP: 82
NG: 82
LP: 82
Energy factor  N/A .94 .93 .83 .83 .83
Dimensions Inches
H: 30½
W: 17
D: 11¼
H: 30½
W: 17
D: 11¼
H: 30½
W: 17
D: 11¼
H: 30½
W: 17
D: 11¼
H: 30½
W: 17
D: 11¼
H: 30½
W: 17
D: 11¼
Weight LBS 88 74 74 67 67 67
Modulating gas valve  Electronic Electronic Electronic Electronic Electronic Electronic
Ignition  Electronic Electronic Electronic Electronic Electronic Electronic
Gas connection Inches
¾ Male NPT ¾ Male NPT ¾ Male NPT ¾ Male NPT ¾ Male NPT ¾ Male NPT
Water connections Inches
¾ Male NPT 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
Min: 3.5
Max: 10.5
LP gas pressure
Inches
of
W.C.
Min: 8.0
Max: 13.0
Min: 8.0
Max: 13.0
Min: 8.0
Max: 13.0
Min: 8.0
Max: 13.0
Min: 8.0
Max: 13.0
Min: 8.0
Max: 13.0
Water pressure- static PSI
Min: 30
Min (well): 40
Max: 145
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 VAC 120 120 120 120 120 120
Venting options 
direct vent,
room-sealed,
combustion
direct vent,
room-sealed,
combustion
direct vent,
room-sealed,
combustion
direct vent,
room-sealed,
combustion
outdoor
installation
only
direct vent,
room-sealed,
combustion
Venting diameter Inches 3 or 4 3 or 4 3 or 4 3 or 4 N/A 3 or 4
Vent material 
PP common
vent, PP twin
pipe, PVC,
CPVC,
or ABS
(Schedule 40)
PP common
vent, PP
up and out
concentric
vent, PP twin
pipe, PVC,
CPVC,
or ABS
(Schedule 40)
PP common
vent, PP
up and out
concentric
vent, PP twin
pipe, PVC,
CPVC,
or ABS
(Schedule 40)
Stainless
steel
(AL29-4C)
Outdoor vent
cap supplied
Stainless
steel
(AL29-4C)
Temperature range °F
100-180°F
(ESC)
100-140°F
(ES)
100-140°F
100-184°F
(requires HT
kit)
100-140°F
100-184°F
(requires HT
kit)
100-140°F
100-184°F
(requires HT
kit)
100-140°F
100-184°F
(requires HT
kit)
100-140°F
100-184°F
(requires HT
kit)