One way valve
Drain pipe
Filter
Ball valve
City water inlet
Connect to
water tank
73
4. Installation Walkthrough
4.7. Water Pipework
After installation of the unit is complete, connect the water inlet to outlet pipe according to local
regulations, and confirm that there is flow. Have the piping pressure tested and cleaned before use.
4.7.1. Filtration
A mesh filter should be installed between the water inlet of the unit and the water tank in order to
keep collect any impurities and preserve water quality. The filter should be aimed down like below.
It is highly recommended to install check valves on both sides of the filter, to make cleaning or
changing the filter later on easier.
4.7.2. Insulation
All pipes running hot water should be
well-insulated. No gaps should exist between
insulation and outer pipe. Keep the check
valves uncovered for future maintenance.
Before finishing, ensure that there is sufficient pressure to send water to the required heights. If not,
a water pump can be added in order to increase pumping head.
4.7.3.Water Quality Standards
•
Water should contain less than 300 ppm of chloride (in temperatures less than 60
℃ ）
•
The pH value of the water should be between 6 to 8.
•
No water containing ammonia should pass through this unit.
If the water quality is bad or the water flow is too weak, scale formation and clogging may eventually
occur, which lowers efficiency of cooling and heating and can cause abormalities to occur.
Use pre-cleaned water, or purified water. Good water quality keeps the unit running in high efficiency.
