Honeywell 35898 , Inc. Ec7890 Rm7890 On-Off Primary Controls

120V AUTOMATIC PRIMARY RELAY MODULE *** RESTRICTED

The Ec7890 / Rm7890 is a ready to use primary relay module to control small loads. This fully enclosed, all-weather design complies to both UL and CSA safety standards for use indoors or outdoors. The controller includes built-in diagnostic features with auto test feature, optional Class B rated external heat sink, terminal board screw-terminal connections. Temperature compensation included.

The eC7890 Remote Module is designed to work with the Ec7890 Primary Module. The primary relay module controls a switch for 120V AC and is ideal for heating and cooling applications using 3 phase 240V system.

The primary relay module relays your furnace blower, air conditioner and pump on/off commands. It replaces the old ''limit switches'' by adjusting to internal changes in the the controller.

The Honeywell 35898, Inc. ec7890 is a 120v relay module, and has many safety applications in electrical controls: Light control, fan control, heating and air conditioning control, power distribution.

The Econoswitch® 890 Relay Module has been designed to supply voltage for up to three heating and/or cooling loads via a solid state AC contactor. The module's full line switching capability permits operation in parallel when used with other Honeywell environmental control products for energy savings and easy wiring. This Econoswitch 890 is Designed for use in heating and/or cooling systems that are load matched on the module with up to 110% minimum supply line capacities. The primary relay system enables the module to switch nominal primary circuit line voltages while simultaneously providing overload and interlocking protection of the system. This

The Ec7890 series is a P.C. mount, air cooled, 120 V constant voltage relay module for use with the full line of Honeywell photoelectric and occupancy sensors. It is also compatible with all 4- 20mA/0-10V DC signal sources as well as all switching power supplies.

The Primay Control Module (PCM) is hard-wired within the equipment to control the compressor. The PCM in this relay module is a solid state device, utilizing optically isolated inputs and high voltage solid state outputs.