Filter
Top Products
8 Packaged Heat Pump • WC-IOM-7
General Information
ordered as a kit to be field installed. Follow the installation instruction that ships
with each kit when field installation is necessary.
RLCI - ReliaTel™ LonTalk Communication Interface (Optional)
This module is used when the application calls for an ICSTM building
management type control system that is LonTalk. It allows the control and
monitoring of the system through an ICS panel. The module can be ordered from
the factory or ordered as a kit to be field installed. Follow the installation
instruction that ships with each kit when field installation is necessary.
RTOM – ReliaTel™ Options Module (Optional)
The RTOM monitors the supply fan proving, clogged filter, supply air
temperature, exhaust fan setpoint, supply air tempering, Frostat™ and smoke
detector. Refer to system input devices and functions for operation.
System Input Devices & Functions
The RTRM must have a zone sensor or thermostat input in order to operate the
unit. The flexibility of having several mode capabilities depends upon the type of
zone sensor or thermostat selected to interface with the RTRM.
The descriptions of the following basic Input Devices used within the RTRM
network are to acquaint the operator with their function as they interface with the
various modules. Refer to the unit’s electrical schematic for the specific module
connections.
The following controls are available from the factory for field installation.
Supply Fan Failure Input (Optional)
The Fan Failure Switch can be connected to sense indoor fan operation:
FFS (Fan Failure Switch) If air flow through the unit is not proven by the
differential pressure switch connected to the RTOM (factory set point 0.07 “ w.c.)
within 40 seconds nominally, the RTRM will shut off all mechanical operations,
lock the system out, send a diagnostic to ICS, and the SERVICE output will flash.
The system will remain locked out until a reset is initiated either manually or
through ICS.
Clogged Filter Switch (Optional)
The unit mounted clogged filter switch monitors the pressure differential across
the return air filters. It is mounted in the filter section and is connected to the
RTOM. A diagnostic SERVICE signal is sent to the remote panel if the pressure
differential across the filters is at least 0.5" w.c. The contacts will automatically
open when the pressure differential across the filters decreases to approximately
0.4" w.c. The clogged filter output is energized when the supply fan is operating
and the clogged filter switch has been closed for at least 2 minutes. The system
will continue to operate regardless of the status of the filter switch.