Bard WPV48D, Руководство по установке

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Manual 2100-250
Page 8
The components for a circulation system are as follows: Refer to Figure 6.
1. Circulating pump systems are engineered for each individual system to provide the correct water flow
and overcome the friction loss of the system piping. Isolation flanges or ball valves are used to insulate
pump from system piping. You need to be able to remove the pump from piping without losing the
transfer fluid for repairs if ever required.
Determining pressure drop and selecting a circulation pump or pumps. It is very important in
selecting the circulating pump that a very accurate pressure drop calculation be made because final
pressure drop at the selected pump must pump against will to determine the actual flow rate (GPM)
that is delivered to the water source heat pump, the pumping cost and efficiency of the entire system.
2. Ball valve and flange
3. Barb X MIP brass adapter
4. Brass test plugs--in order to start up and troubleshoot a closed loop system properly, water in and water
out temperatures at the heat pump must be monitored. A test plug is installed on one leg of each
connection line. A probe thermostat can be temporarily inserted, the temperature monitored and the
thermometer removed. Use one thermometer to monitor these temperatures. Using two different
thermometers to measure the temperature differential can introduce large measurement errors. They
are also used to measure pressure drop to determine coil flow rate.
5. Bard X insert brass adapter
6. Two boiler drains are located on both sides of the circulator for final filling, air purging and antifreeze
addition.
The top drain should be the highest point in the equipment room piping. This will help purge air out of the
system during final filling at start up.
7. PE or PB pipe to fit transition
8. One inch reinforced flexible hose
9. 90º street ell (brass)
10. Flow meter (Bard part No. 8603-017)--or equivalent side to monitor water flow is recommended.
FIGURE 6
COMPONENTS FOR CIRCULATION SYSTEM
RETURN AIR
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