6
85 Series Model Identification
MODEL DESCRIPTION
85
I6-II
DC
LP
6
SB
w/o Therm
Model
BTU/Hr Rate (Input)
16-IV = 16,000
20-IV = 20,000
25-IV = 25,000
31-IV = 30,000
35-IV = 34,000
Voltage DC
Type Gas
LP = Propane
Gas connection size
6 = 3/8” Flare
Options
SB = Side/Bottom discharge
V = Ventilator
SB FIP = SB w/field plug
Thermostat
with thermostat
w/o thermostat
NOTE: The new 85-IV series furnace, through some design changes is quieter than the previous 85 series. It
incorporates some plastic components in the blower housing area to accomplish this. These components
are not retro-fittable to other 85 series furnaces.
Applica
tions - This unit is typically installed in travel trailers, 5th wheels and motor homes.
Installation - This series of furnace can be installed either vertically or horizontally. If installed vertically, the exhaust port must be
located at the bottom. Extra care must also be given in sealing this type of installation. Consult the installation manual for
details.
Heat Outlets - This furnace can be bottom discharged to a hard duct system, soft ducted out the back to a discharge plate
into a hard duct system or completely soft ducted from a combination of the seven outlets located on both sides and back
of the furnace. Refer to the installation manual for the ducting requirements of the specific model of furnace.
Serviceability - This entire furnace is serviceable without removing it from the RV. Therefore, there is no need to bench test it. All
components are accessible by merely opening the access door. We strongly recommend trouble-shooting the furnace while it is
installed in the RV.
Power Consumption - This furnace is designed to draw between 4.6 and 9.8 amps depending on the model of the furnace.
Refer to the furnace specification decal when trouble-shooting its electrical system.
