| Rheem; Ruud Fossil Fuel Kit Used with Gas and Heat Pump Systems.
The Rheem RXPF Fossil Fuel Kits are intended to be used where the heat pump may provide heat at a lower cost than oil, natural gas or L.P. gas within a certain outdoor temperature range. The kit permits the heat pump to operate at temperatures (usually from 30°F to 35°F and above) where the heat pump is most efficient. For the colder periods, the heating will be provided by a standard furnace which has approximately the same efficiency at all temperatures.
The RXPF Fossil Fuel Kits are for use with Rheem Heat Pumps and most fossil fueled warm air furnaces. They operate by turning the heat pump off at a pre-determined outdoor temperature permitting the furnace to heat as demanded by the wall thermostat. When the outdoor temperature warms up, it will lock out the furnace and let the heat pump do the heating. A plenum switch is employed that will, during heat pump defrost, turn the furnace on as required to prevent cold drafts.
The set point of the kit is adjustable. The recommended set point should be that temperature at which the heat pump will just provide 100% of the heating requirements.
When used with a recommended thermostat, the emergency heat feature easily allows conversion to 100% fossil fuel heat should the heat pump fail, for any reason. The heat pump only switch on the kit allows 100% use of the heat pump if for any reason the fossil fuel heat should fail, such as component failure or lack of fossil fuel.
Replaces Rheem; Ruud; Weatherking Part Numbers:
RXPF-F01 RXPF-FO1 RXPFF01 CARRXPFF01
Used in Rheem; Ruud; Weatherking Equipment Models:
RPNE-030JAZ RPNE030JAZ 90RJ04EES01 90RJ06EES01 90RJ07EFS01 90RJ10EGS01 RGPL Series 90RJ12EHS01 RGPH Series 80PJ Series UGPL Series UGPN Series CRITERION® II PLUS 2 LXE |
