... Convenient installation 4).More safety 200L water tank for home water heater(WS200Y) 1. Advantage of Water Tank:1.1 Without copper pipe ... and main unit ensure safe;1.3 Series of small water tanks can form a big tank, convenient installation, ... more space saving;2. Water Tank SpecificationCapacity: 100L, 150L, 200L, 300L, 400L3. Data sheet 200L water tank for home water heater(WS200Y)