System Pressure Test And Start Up - Rheem H2AC Installation Instructions Manual

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3. Use only solder, brazing, and pipe thread sealing materials approved for potable
water systems.
4. Refer to connection diagram for typical piping, storage tank, and valve configurations.
5. It is highly recommended that the H
isolation/flushing valves (see Figure 15, Webstone #40436 or similar) on the
inlet and outlet water connections to facilitate required periodic lime and scale
removal from the water-to-refrigerant heat exchanger.
6. Maximum equivalent length of water piping is to be in accordance with the procedure
shown in this manual. Consult the pressure loss tables for the values associated with
the required water fittings, valves, and straight lengths.
7. Use the H AC Water Flowrate vs. Water Pressure Drop graph to verify that total sys-
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tem equivalent piping length will not result in less than the 15 GPM minimum flow
rate.
B. SYSTEM PRESSURE TEST AND START UP
1. Pressure test system complete system after all plumbing connections are made using
accepted plumbing leak test procedures.
2. The refrigerant-to-water heat exchanger and water pump housing will contain a
small amount of non-toxic RV-type water system anti-freeze left over from the
factory run test. Be certain to flush the unit and all connecting piping with fresh
water prior to start up and initial use.
3. Verify that air bleed valve in blower section on H
filling with water. Air must be bled from the highest point in the system. If unit installa-
tion results in a higher point than the integral air bleed valve, an additional valve
needs to be installed at that point.
4. Start unit and verify the correct sequence of operation.
AC rooftop unit be installed with
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AC rooftop unit is open during initial
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