Supplementary Document

Product comparison guide
5 | 2011 Commercial water heating solutions
Ground temperatures
CA
OR
WA
ID
NV
MT
WY
UT
AZ
NM
CO
ND
SD
NE
TX
OK
KS
MN
IA
MO
AR
LA
MI
IN
IL
WI
GA
AL
MS
TN
KY
WV
VA
NC
SC
FL
NH
VT
NY
PA
OH
NJ
RI
CT
MA
ME
MD
DE
WA
O
R
C
A
NV
ID
UT
AZ
NM
CO
WY
MT
ND
S
D
NE
K
S
OK
TX
LA
AR
MO
IA
MN
WI
MI
IL
IN
O
H
KY
TN
M
S
AL
G
A
FL
SC
NC
VA
WV
PA
NY
MA
A
A
VT
NH
ME
H
˚F
77˚
72˚
67˚
62˚
57˚
52˚
47˚
42˚
37˚
Choosing the right Bosch product
There are many factors that go into
selecting the right Bosch water heater:
the number of people using hot water
at the same time, type of xtures,
water pressure and geographic region.
To make the process easier, we offer
the map and ow-rate table below as
well as a new Bosch Sizing Calculator
at www.bosch-climate.us.
1. On the map, determine the ground
water temperature in your area.
2. In the corresponding column select
the Bosch water heater based on
how many xtures you’ll be running
at the same time.
Example: A sports complex in Miami, Florida is considering ten C 1210 ESC models linked in a cascade. The ground water temperature
in Miami is 77°F which means this facility can run up to 50 showers at the same time.
Calculations based on 120°F Set Point temperature, 107°F shower temperature, 2.5 GPM showerhead ow rate, 1.5 GPM sink ow rate,
adequate water pressure and gas supply. Variation from these parameters may alter actual performance. GPM shown is the hot water ow
rate at 120°F Set Point temperature.
Inlet Temp. (F)
Summer Winter
Gas Tankless 77˚ 72˚ 67˚ 62˚ 57˚ 52˚ 47˚ 42˚ 37˚
C 1210 ESC
9.8 GPM
8.8 GPM
8.0 GPM
7.3 GPM
6.7 GPM 6.2 GPM
5.8 GPM 5.4 GPM
5.1 GPM
C 1050 ES
8.5 GPM
7.6 GPM
6.9 GPM
6.3 GPM
5.8 GPM 5.4 GPM
5.0 GPM 4.7 GPM 4.4 GPM
C 950 ES
7.7 GPM
6.9 GPM
6.2 GPM
5.7 GPM 5.2 GPM
4.9 GPM 4.5 GPM 4.2 GPM
4.0 GPM
940 ES/ESO
7.7 GPM
6.9 GPM
6.2 GPM
5.7 GPM 5.2 GPM
4.9 GPM 4.5 GPM 4.2 GPM
4.0 GPM
830 ES
6.7 GPM
6.0 GPM
5.4 GPM
5.0 GPM 4.6 GPM 4.2 GPM
4.0 GPM 3.7 GPM 3.5 GPM
660 EF/EFO
5.4 GPM
4.8 GPM
4.4 GPM 4.0 GPM
3.7 GPM 3.4 GPM
3.2 GPM 3.0 GPM 2.8 GPM
Electric Tankless 77˚ 72˚ 67˚ 62˚ 57˚ 52˚ 47˚ 42˚ 37˚
RP 27 PT
4.3 GPM 3.8 GPM
3.5 GPM 3.2 GPM
2.9 GPM 2.7 GPM 2.5 GPM 2.3 GPM 2.2 GPM
RP 17 PT
2.7 GPM 2.5 GPM 2.2 GPM 2.0 GPM
1.9 GPM 1.7 GPM 1.6 GPM 1.5 GPM 1.4 GPM
Simultaneous Showers Sink Faucet