Is the tubed capped? If so and cap is not tight or missi g the seal, it could be a low point drain for hot or cold. Also could be an over flow for tank. If so, check valve may not be working on pump. Is your tank empty or full?
It was a rainy few days at Algonquin Prov park...tarps kept us dry.
Wayne --Belle River (Windsor), Ontario
2013 Sunset Trail Reserve 25RB..
2015 White Chev Silverado 2500HD 4x4 (6.0 l gasser)
2003 Mountain Star 890SBRX Truck Camper