Water tank assembly of heating equipment and heating equipment

The invention discloses a water tank assembly of heating equipment and the heating equipment, the water tank assembly of the heating equipment comprises a tank body, the tank body comprises a first side plate assembly and a second side plate assembly, the first side plate assembly defines a first water box, the second side plate assembly defines a second water box, a water inlet is communicated with one of the first water boxes, and a water outlet is communicated with the other of the second water boxes; the water outlet is communicated with one of the first water boxes; the counter-fire surface heat exchange pipes are arranged on the side, facing the smoke inlet, of the main heat exchange pipe assembly, and the counter-fire surface heat exchange pipes, the main heat exchange assembly and the condensation pipe assembly communicate with the first water box and the second water box correspondingly; the main heat exchange pipe assembly is arranged on the first heat exchange fin assembly in a penetrating mode. Th