Application Manual

| Infiniti™ K 160-1996 Application Manual
Data subject to change 10.2018 | Bradford White Water Heaters
3 WATER HEATER SIZING AND SPECIFICATIONS
RULE OF THUMB SIZING
The tables below provide a general rule of thumb when sizing for
most residential applications. For commercial applications or for a
more detailed sizing method, use the Sizing by Chart instructions
below in conjunction with the charts on the next page.
SIZING BY CHART
• Measure the flow rates at each fixture that will be used
simultaneously and add them together. If only one
application will be used at a time measure each fixture and
use the maximum flow rate observed.
• Using a known volume container, record several fill times.
Perform the calculation below to determine the flow rate (a
one gallon fill time of 30 seconds is 2.0 gallons per minute
(GPM):
3.1 SIZING TANKLESS WATER HEATERS
This section describes the Infiniti® K water heaters from Bradford
White Corporation and provides a general overview to the
specification sheets and model. More detailed information is
contained in the installation manuals.
Download manuals at www.bradfordwhite.com.
Flow rate (GPM) =
Volume (gallons)
Fill time (sec)
sec
min
x 60
• Using a thermometer, measure the incoming water
temperature. For reference, see average ground water
temperature map. Subtract this temperature from the
desired hot water temperature to get the degree rise. If
the desired hot water temperature is 120F and incoming
temperature is 55F, the desired degree rise is 65F.
EXAMPLE
• Required flow rate of 2.0 GPM at a 65˚F rise.
• Refer to the graphs on page 10.
See Table 1 for multiple fixture possibilities and hot water flow
rates at given inlet water temperatures with a water heater set
point temperature of 120°F.
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
OR
CA
NV
ID
U
T
A
Z
NM
CO
WY
MT
ND
SD
NE
K
S
O
K
TX
LA
AR
MO
IA
MN
WI
MI
IL
IN
OH
KY
TN
M
S
AL
GA
FL
S
C
N
C
VA
WV
PA
NY
MA
A
VT
NH
ME
˚F
77˚
72˚
67˚
62˚
57˚
52˚
47˚
42˚
37˚
Figure 1 Average ground water temperatures
Figure 1: Average ground water temperatures
| Infiniti® K 160-199 Application Manual
Data subject to change 10.2019 | Bradford White Water Heaters
6