13
Installation of Indoor Heating and Cooling Equipment
• Indoor heating and cooling equipment such as fan coils, radiator heating or floor heating, should be
installed in accordance with relevant regulatory requirements, engineering design drawings, and the
manufacturer's installation instructions.
• Use flexible piping to connect the heat pump and indoor heating and cooling equipment, such as PEX or
flexible stainless steel or flexible cooper.
• If using fan coils to cool be sure to install condensate water drain pipes to the indoor fan coil units with
smooth drainage lines for the condensate water to flow easily.
Water Pipe Connections
• Water pipe material should be heat resistant and rust-proof. This can be stainless steel, copper, aluminum,
hot water PEX pipes, etc., according to local standards.
• The pipework of the system should follow the relevant standards, and transition to match the connection
size of the heat pump
• The hot water storage and buffer tank drain port and pressure and temperature relief valve should be
installed to allow for proper drainage according to relevant standards.
• The pump is installed INDOORS located on the water inlet line (lower line) with arrow on pump flowing to the
heat pump. Be sure to add an isolation shut off valves to service pump in the future.
• The hot water storage and buffer tank must be installed with an isolating valve to allow for maintenance.
• The water pipes should be arranged with minimal bends to reduce pressure loss in the system.
• The water inlet should be fitted with a one-way check valve (found in the UPC 26-99fc pump) and
isolating valves for service
• After all the pipes are connected, the system should be tested at water supply pressure for 24 hours to
ensure that the system does not leak. Then insulate relevant hot water and cold pipes, and ther plumbing
fittings.
• In order to discharge all air from the water pipeline, the water supply return pipe should have an
automatic air bleeding valve installed at the highest point.
• An expansion tank must be installed into the system to absorb expansion of the closed loop as temperature
increases in the system. It should be installed on suction side of pump.
• It is recommended to install in the water flow and return a thermometer and water pressure gauge to
enable monitoring of key operational parameters.
Note:
1. The recommended pressure of the heat pump loop should be 11-20 psi.
2. The water pipes should be subjected to a pressure test before operation of the heat pump twice the
operating pressure.
3. A drainage pipe should be installed to drain from the pressure and temperature relief valve.
4. The pressure and temperature relief valve should be periodically exercised by gently pulling the lever up.
This will help to remove possible accumulation of calcium carbonate and ensure that the valve is working
properly.
5. Install one-way (check) valves, shut on valves, pressure and temperature relief valves, and any other
plumbing fittings consistently with the marked flow direction and in accord with relevant local standards.
To Next Page
Loading...