A drainage tray may be provided for collecting condensate from a heat pump that is adapted to be mounted on a support. The support may be mountable to at least one supporting structure to carry the weight of the heat pump and the support. The drainage tray may include a peripheral edge portion defining a central recessed portion configured to collect condensate. A condensate outlet may be provided for removing the condensate from the tray. The drainage tray may be configured to be arranged between an underside of the heat pump and the support. The drainage tray may have a trapezoidal shape.

An air pressure regulating device comprises an expansion tank having air stored therein and having an air injection/discharge port at an outside thereof; and a pressure regulation unit provided with a three-way ball valve connected to the air injection/discharge port, a pressure gauge which is installed in any one of flow paths of the three-way ball valve to check an internal pressure of the expansion tank, and a valve core which is installed in a flow path other than the flow path in which the pressure gauge is installed to be capable of injecting or discharging air into or from the expansion tank so as to be capable of controlling the internal pressure of the expansion tank.

Described herein are embodiments of a furnace inlet water collector for an HVAC system. The inlet water collector may include a base having an air intake aperture; an inner wall having a first top end and a first bottom end, the first bottom end provided proximate to the base; an outer wall having a second top end and a second bottom end, the second bottom end provided proximate to the base, the inner wall having a diameter smaller than a diameter of the outer wall; one or more pipe stops provided proximate to the base and between the inner wall and outer wall, a height of the one or more pipe stops extending less than a height of the outer wall; and a drain coupled to the outer wall and in fluid communication with a channel displaced between the inner wall and the outer wall.

Described herein are embodiments of a furnace inlet water collector for an HVAC system. The inlet water collector may include a base having an air intake aperture; an inner wall having a first top end and a first bottom end, the first bottom end provided proximate to the base; an outer wall having a second top end and a second bottom end, the second bottom end provided proximate to the base, the inner wall having a diameter smaller than a diameter of the outer wall; one or more pipe stops provided proximate to the base and between the inner wall and outer wall, a height of the one or more pipe stops extending less than a height of the outer wall; and a drain coupled to the outer wall and in fluid communication with a channel displaced between the inner wall and the outer wall.

An air heating apparatus according to the present disclosure includes an expansion tank that stores water, a water heater that receives heat from a combustion gas generated by a combustion reaction and heats the water, a heating heat exchanger that receives the water heated by the water heater and exchanges the heat with air to be discharged for heating, a fan that delivers the air to the heating heat exchanger, and a steam supply flow path that supplies steam in the expansion tank to the fan.

A deaerator with integrated shut-off valve comprising a detachable hollow body having a lower part of a cup-shaped body having an inlet connectable to a hydraulic manifold, and an upper part of the cup-shaped body having a vent opening. The upper part is configured to be stabilized the lower part to define a deaeration chamber. The deaerator may include a float assembly having a float element and a drive mechanism. The deaerator may further include a shutter slidingly arranged through said inlet opening of said lower portion, and a head arranged on the inner end of the body. The shutter may include a collar to block the passage of liquid through the opening when the upper part is detached from the lower part of the same body.

A removal device for removing gas bubbles and/or dirt particles from a liquid in a liquid conduit system includes a main channel for a main flow, the main channel having an entry and an exit which are configured to be connected to the conduit system; a housing which defines an inner space; at least one supply channel extending from the main channel to the inner space; at least one return channel extending from the inner space back to the main channel; and a branch flow control member positioned in the main channel. The branch flow control member being movable between a first position to branch off at least a part of the incoming main flow into the inner space via the supply channel and a second position to branch off at least a part of the incoming main flow into the inner space via the supply channel.

The present invention relates to a connector (100) for a water system. The connector comprises an inlet connector (105), a connector body and an outlet connector (120) arranged in sequence. The connector body is open-sided so as to form a tundish having an open air gap between the inlet and outlet connectors (105, 120), through which water can fall in use. The connector (100) further comprises a sensor for detecting the presence of water within the connector body.

A passive heater for heating a drainage tube, the passive heater including: an elongated flexible thermal conductor including a first end and a second end, wherein the first end is configured to be disposed in contacting relationship with a heat source and at least a portion of the elongated flexible thermal conductor is configured to be disposed in contacting relationship with a portion of the drainage tube; and an eyelet disposed on the first end, the eyelet configured to facilitate the securement of the elongated flexible thermal conductor to the heat source, wherein the first end is configured to receive heat and transmit it along the elongated flexible thermal conductor to increase temperature of the portion of the drainage tube to prevent freezing of a fluid through the drainage tube.

A filling loop device for a pressurized heating system comprising means defining a fluid passage having, an inlet port connectable to a fluid supply and an outlet port connectable to a heating system fluid circuit; and a dead man valve interposed in the passage between the inlet port and the outlet port, said dead man valve biased to a normally closed condition to shut off fluid flow through the channel in either direction when unattended, and manually operable to an open condition to permit fluid to flow from the inlet port to the outlet port. Also provided is a method of charging a pressurized boiler and heating circuit.