When many sun water heater is paratactic, as far as possible not keep out, or little keep out, to reduce around gear light, choose height a bit low sun water heater is more advantageous.

• 多排太阳热水器并列时，尽可能不遮挡，或少遮挡，为减少前后排挡光，选用高度稍低的太阳热水器更有利。