General Data | Piping Packages | |
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Factory-Installed Piping Packages
Piping Package Components
Piping System/Placement
Factory piping packages are available with right or left hand connections. A simple coil connection (a unit without a piping package) is also available in either a right or left hand configuration for those applications requiring field piping.
Interconnecting Piping Interconnecting piping refers to the copper piping which is attached to the coil connections and all other compo- nents such as control valves, end valves, etc. Piping is 1/2” nominal OD copper and extends near the unit exterior to one inlet and one outlet connection.
Deluxe or Basic Piping Package
The basic piping package includes only the main components of the piping package: interconnecting piping, control valves, and end valves.
The deluxe piping package also includes a strainer on the entering water pipe and unions at the coil connections along with the basic components. The strainer body is cast brass construction, with a stain- less steel mesh strainer that is easily removed for cleaning. The unions are forged brass construction and close with a minimum amount of effort.
End Valves
Each piping package includes a ball valve for the entering water pipe and one of the following end valves on the leaving water pipe: ball valve, manual circuit setter, or an auto circuit setter. These valves serve as the field connection points on all
•Ball Valves
Ball valves, also known as stop or end valves, allow the unit to be cut off for service purposes. These valves have a
Manual Circuit Setter
In lieu of a ball valve on the leaving water pipe, a manual circuit setter, also known as a manual flow control valve, acts as both a flow setting device and a stop valve. This valve allows water flow through the cabinet heater to be set quickly and accurately.
The manual circuit setter includes Schrader ports in the valve body. These ports are used to measure the pressure drop across the valve. This pressure drop can be compared to factory supplied curves that relate the pressure drop to a specific flow rate. This valve also has a memory stop so the correct setting can be found quickly.
Auto Circuit Setter
An auto circuit setter is an automatic flow control device available on the leaving water pipe. The auto circuit setter includes a cartridge within the valve body that is sized to allow a specific flow rate through the coil. This valve sets flow through the coil without any action required by a system piping balancer. The auto circuit setter is available on the leaving water pipe with a ball valve.
The auto circuit setter also includes two P/T’s plugs in the valve body to allow measurement of the pressure drop temperature through the valve.
Control Valves
Piping packages are available with or without control valves. All control valve options are factory mounted and wired to the
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These valves will either allow full water flow through the coil or divert the flow through a bypass line. The valves respond to a 24VAC signal from the Trane controller. Control valves are direct acting valves. All
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These valves modulate the water flow through the coil in response to a signal from the Trane controller. Modulating valves are
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