These thermostats are designed to operate all R.V. Products ceiling assemblies, which control the air conditioner 115 VAC circuits through 12 VDC relays. Wiring is required between the thermostat and the ceiling assembly. The thermostat wiring is field installed and must be considered before wall paneling and ceiling panels are in place. Wall thermostat-controlled air conditioners are normally OEM (Original Equipment Manufacturer) installed. Wall thermostat-controlled air conditioners may be installed for aftermarket applications with additional considerations given to the thermostat wire routing. The 7330*335* and 7330*385* thermostat may also operate any RV furnace 12 VDC control circuit not exceeding one amp. All thermostats are equipped with a replaceable 2 amp fuse located on the front of the thermostat body.
BE SURE ALL ELECTRICAL POWER HAS BEEN DISCONNECTED FROM THE AIR CONDITIONER, THE CEILING ASSEMBLY, AND THE POWER SUPPLY.
These instructions are provided for the proper mounting of the thermostat itself. An Operation Chart and Terminal Cross Reference Chart are provided to show thermostat capabilities. The wiring procedure is dependent upon the ceiling assembly to be matched with this component and is provided in the ceiling assembly installation instructions.
Recreation Vehicle Products suggests the thermostat wiring be a minimum of 18 gauges.
This thermostat is a sensitive instrument. For accurate temperature control and comfort, the following considerations should be taken into account:
ROUTING THE THERMOSTAT WIRE BUNDLE
A separate wire bundle to power the 12 VDC thermostats will need to be routed between the thermostat and the power supply. Both positive and negative must be brought up to the thermostat. If a 12 VDC furnace is also to be operated, additional wiring will need to be routed and a definite furnace location defined. See Figure 1.
ATTACHING THE WALL THERMOSTAT
TO PREVENT POSSIBLE DAMAGE TO THE EQUIPMENT OR PERSONAL INJURY DUE TO ELECTRICAL SHOCK, BE SURE THAT ALL ELECTRICAL POWER TO THE THERMOSTAT HAS BEEN DISCONNECTED BEFORE THE WIRING PROCEDURE.
If this is a replacement thermostat and there is no negative 12 VDC supply at the thermostat, a negative wire from the power supply to the thermostat must be added.
The chart below shows the system functions with the 7330*335* and 7330*385* thermostats. After the entire air conditioning system (and furnace system) is installed, check each position function. Disregard references to heat functions when using the 7330*336* “Cool Only” thermostat All cooling functions controlling to set point have a short cycle protection time delay of 3 minutes. There will be no delay if the cycle OFF time exceeds 3 minutes.
# There is no heat switch or furnace function available with the 7330*336* “Cool Only” thermostat.
Download manual: Coleman 7330F3852 Thermostat-Instruction Guide
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