The automatic control of the auxiliary heat pump heating and the like

4.1 solar system function should contain at least: automatic water, automatic temperature cycle, multi-time period fixed temperature backwater, each function pipe network antifreeze circulation, explosion protection, leakage protection, motor overheat protection, tank overheating protection systems and other.

The 5.5 valves recommendations Amico, Jack Long, Indesen or equivalent grade quality branded products.

2, offer products manufacturers, or manufacturers offer products authorized in writing to participate in the project quotation only designated agents.

3, solar products and air-source heat pump hot water system manufacturer must have passed the ISO9000 quality system certification, ISO14000 quality certification, the national compulsory 3C certification, environmental management system certification;

2 solar hot water system is a closed system, the use of stainless steel plate exchanger tank for heat exchange, using a heat transfer medium is circulated in a closed system.

1, with "the People's Republic of China business license, tax registration certificate, business scope;

5, with a comprehensive service system and good after-sales service record, with service agencies and service personnel in the Shanghai area, and can provide local technical support services;