Catalogue

CAB-PRC001-EN 17
General Data
based on the capacity request and the electric heat cycles per hour. For example, if the electric heat
cycles per hour is configured for six cycles (as Trane recommends) the controller bases the output
on or off time on six 10-minute periods. If the capacity request is 40 percent, the controller controls
the electric heat output on for approximately four minutes each period.
Safety Features
• Fan/valve operation to ensure safe operation and to ensure that two modes of heat are not
operating simultaneously.
• All Force-Flo units with standard electric
heat are UL listed.
• Units require only a single-point electrical connection.
• All electric heating coils are interloc
ked with the fan motor switch. Therefore, electric heat
operation is only possible when the fan is running.
• Each unit has a transformer, eliminating the nee
d for field installation of a stepdown
transformer.
• Unit-mounted quiet magnetic relays are supplied on all unit voltages.
• A line-break high temperature cutout
with automatic reset is provided as an integral part of the
elements to de-energize the electric heat in the event of an overheat condition.
Factory-Installed Piping Packages
Force-Flo cabinet heaters have standard piping packages available as a factory built and installed
option. Factory built assures all piping packages are fully tested under water for leaks and are built
within strict tolerances. Factory-installed means that supply and return pipes are the only field
connections required. The installer doesn’t have to sweat connect piping packages onto coil
connections in a tight end pocket. Field connections are brought to a point near the exterior of the
unit for easy access.
Piping Package Components
Force-Flo piping packages consist of a variety of components for each application. The following
section provides a detailed description of the piping components. Following this section are
additional illustrations and specifications.
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 that attaches the coil connections and all other
components 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 listed above. The strainer body is cast brass
construction, with a stainless steel mesh strainer that is easily removed for cleaning. The unions
are forged brass construction and close with a minimum amount of effort.
CAB-PRC001-EN.book Page 17 Tuesday, May 8, 2012 10:11 AM