
35
6
-8
week
In-service
test
Has
mixed
water
temperature
changed
by
more
than
1K?
24
-
2
8
week
In-service
test
intervals
18
-
2
1
week
In-service
test
intervals
6
-
8
week
In-service
test
intervals
12
-
1
5
week
In-service
test
intervals
9
-
1
2
week
In-service
test
intervals
12
-
1
5
week
In-service
test
intervals
6
-
8
week
In-service
test
intervals
Has
mixed
water
temperature
changed
by
more
than
1K?
12
-1
5
week
In-service
test
24
-2
8
week
In-service
test
12
-1
5
week
In-service
test
1
2
-1
5
week
In-service
test
24
-2
8
week
In-service
test
18
-2
1
week
In-service
test
18
-2
1
week
In-service
test
12
-
1
5
week
In-service
test
intervals
6
-
8
week
In-service
test
intervals
No
No
NOTE:
Mixed
water
temperature
required
is
that
at
ste
p2&3o
f
In-service
test
procedure.
Has
mixed
water
temperature
changed
by
more
than
1K?
Has
mixed
water
temperature
changed
by
more
than
2K?
Ye
s
Ye
s
No
Has
mixed
water
temperature
changed
by
more
than
2K?
Ye
s
Ye
s
No
Has
mixed
water
temperature
changed
by
more
than
1K?
Ye
s
No
Has
mixed
water
temperature
changed
by
more
than
2K?
No
Ye
s
Has
mixed
water
temperature
changed
by
more
than
2K?
No
Ye
s
Has
mixed
water
temperature
changed
by
more
than
1K?
No
Ye
s
Has
mixed
water
temperature
changed
by
more
than
1K?
Has
mixed
water
temperature
changed
by
more
than
2K?
Ye
s
Ye
s
No
No
Guide to In-service Test Frequency
Figure 5
Note!
K = Kelvin, the unit of thermodynamic temperature. The unit "Kelvin" is equal
to the unit of "Degree Celsius". Kelvin is used for a difference of Celsius
temperature.