Pump Operation - Lochinvar COPPER-FIN II CF401 Designer's Manual

WATER VELOCITY CONTROL
IMPORTANT
To ensure proper velocity through the
heat exchanger, it is necessary to regulate the
temperature rise across the heat exchanger
from inlet to outlet. (This must be done on
initial installation and periodically rechecked).
With the correct temperature rise across the
heat exchanger (See TABLE L), you may be
assured of the proper velocity in the tubes
and long life and economical operation from
the water heater.
(TABLE L) - REQUIRED TEMPERATURE RISE
MODEL NUMBER
CF401
CF501
CF651
CF751
CF991
CF1261
CF1441
CF1801
CF2071

PUMP OPERATION

The water heater MUST be connected
1.
with a properly sized and installed,
intermittent operating, all bronze pump
that circulates water between heater
and storage tank.
The pump is sized to heater input and
2.
water hardness. Should water hardness
exceed 25 grains/350 TDS, consult
factory for pump sizing.
L o c h i n v a r
D E S I G N E R
The pump chart (Table M) is based on the
following fittings:
6-90° elbows
2 unions
Due to pump capacity the following
specifications cannot be exceeded
when using the standard pump:
• Not more than 45 feet of straight pipe.
• For every elbow and tee in excess of
those shown above, DEDUCT 5 FEET
from maximum allowable straight pipe
TEMPERATURE RISE °F in heater-to-tank circulating loop.
12
15
WATER TREATMENT
20
23
19
PERFORMANCE FOR WATER HARDNESS
24
27
MODEL
34
39
CF401-751
CF991-2071
In hard water areas, water treatment
should be used to reduce introduction
of minerals into the system. Minerals
in the water can collect in the heat
exchanger tubes causing noise and
inefficient operation. Excessive build-up
of materials in the heat exchanger can
cause a non-warrantable failure.
' -
S G U I D E C O P P E R F I N I I W A T E R H E A T E R
2 ball valves
1 cold water supply tee
(TABLE M) - REQUIRED PUMP
OF 5 TO 25 GRAINS
GPM FT. HD AMP DRAW HORSE
POWER
55 10 5.8 1/4
90 15 7.4 1/2
6 1 5 - 8 8 9 - 8 9 0 0
NOTE:
A larger pump must be
utilized in situations
where the distance
between the water
heater and tank exceed
those specified.
NOTE:
Care should be taken to
measure temperature
rise and maintain proper
water velocity in the
heat exchanger.
VOLTAGE/
PHASE
120/1
NOTE:
120/1
If a pressure reducing
valve or check valve is
in the system a properly
sized expansion tank
may be required.
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