RV Products 8000 Series Manual

OPERATION AND MAINTENANCE INSTRUCTIONS
FOR 8000 SERIES
ROOF TOP AIR CONDITIONERS
AND
CEILING PLENUMS
MODE D’EMPLOI ET UTILISATION
DES CLIMATISEURS DE TOIT DES
SÉRIES 8000 ET
PLÉNUM DE PLAFOND
RV Products
A Division of Airxcel, Inc.
P.O. Box 4020
Wichita, KS 67204
1971AA982 (9-06) PP

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TABLE OF CONTENTS
I. General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
II. Standard Ceiling Plenum Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
III. Standard Ceiling Plenum Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
IV. Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
V. Wall Thermostat Identification And Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
VI. Warranty Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
SECTION I - GENERAL INFORMATION
These air conditioners were designed to operate from a
115 VAC, 60 HZ, 1 Phase power supply. Anytime an air
conditioner is not operating properly, the power supply
should be examined by a qualified technician to verify that the
air conditioner is receiving the proper power supply.
The ability of the air conditioner to maintain the desired inside
temperature depends on the heat gain of the recreational
vehicle.
The size of the vehicle, amount of window area, amount of
insulation, direct exposure to the sun, outside temperature and
the number of people in the recreational vehicle may increase
the heat gain to such an extent that the capacity of the air
conditioner is exceeded.
As a general rule, air entering the air conditioner will be cooled
about 15 to 20 degrees, depending on the outside temperature
and humidity conditions.
For example, if the air entering the return air grilles in the air
conditioner is 80 degrees F, the air leaving the discharge grilles
in the air conditioner will be 60 to 65 degrees F.
As long as this temperature difference is being maintained
between the return air and discharge air, the air conditioner is
operating at its capacity. If the desired inside temperature
(normally 80 degrees F) cannot be maintained, then the heat
gain of the RV is too great for the capacity of the air
conditioner.
Parking the vehicle in a shaded area, keeping windows and
doors shut and avoiding the use of heat producing appliances
in the vehicle will help to reduce the heat gain. When
possible, the addition of insulation and tinted glass (especially
in uninsulated vans) should be considered.
NOTE
The optional Elect-A-Heat heating assembly is intended to
take the chill out of the indoor air when the air is a few
degrees too cool for comfort. The heating assembly is an
effective “chill chaser”. It is not a substitute for a furnace.
SECTION II - CONTROL PANEL
If your RV air conditioner is operated from the control panel
located in the ceiling assembly, then there are three controls
on the ceiling assembly that help you control the air
conditioner. They are as follows:
A. The Selector Switch - The selector switch determines
which mode of operation the air conditioner will be
in. By rotating the selector switch, the operator can
obtain any system function desired. System
functions vary depending upon options of both the
roof top unit and ceiling assembly. Figure 1 shows
selector switch location and lists all available
functions by model.
The “Operation” section explains the operational
characteristics of each mode of operation.
B. The Thermostat (temperature control) - In the
cooling mode, the thermostat regulates the “ON”
and “OFF” temperature setting at which the
compressor will operate.
For “Heat/Cool” models, the thermostat also controls
the “ON” and “OFF” temperature settings of the
heater assembly. See Figure 1.
C. Louvers - The louvers are located at both ends of the
ceiling assembly shroud and are used in directing the
discharge air from the unit.

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FIGURE 1
SECTION III - OPERATION
I. For Cooling (Refer to Figure 1, page 3).
A. Turn the selector switch to the “LOW COOL” or
“HIGH COOL” position.
B. Rotate the thermostat (temperature control) to the
position that is the most comfortable to you. The
thermostat will turn the compressor on when the
temperature of the air entering the air conditioner
rises a few degrees above the setting you have
selected. Then the temperature of the air entering
continues to cycle the compressor on and off in the
above mentioned fashion until the selector switch is
turned to another mode of operation.
C. Position the louvers to the desired direction the
discharge air is to flow.
Note: The fan operation is constant, only the
compressor cycles on the thermostat.
II. Operation During Cooler Nights (Cooling
Operation).
It is important, when the outdoor temperature drops in the
evening or during the night to below 75 degrees F, that the
thermostat (temperature control) be set at a midpoint between
“Warmer” and “Cooler”. If the setting is at “Cooler”, the
evaporator coil may become iced-up and stop cooling. During
the day when the temperatures have risen above
75 degrees F, reset the thermostat switch to the desired
setting.
NOTE
Should icing-up occur, it is necessary to let the cooling
(evaporator) coil defrost before normal cooling operation is
resumed. During this time, operate the unit in the “HIGH
FAN” position with the system at maximum air flow. When

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increased or full air flow is observed, the cooling coil should
be clear of ice.
III. Short Cycling
When an air conditioner is in operation, its compressor
circulates refrigerant under high pressure. Once off, it will take
two to three minutes for this high pressure to equalize.
The air conditioning compressor is unable to start against high
pressure. Therefore, once the air conditioner is turned off, it is
important to leave it off for two to three minutes before
restarting.
Short cycling the compressor (or starting it before pressures
have equalized), will in some instances, kick the circuit breaker
or overload.
IV. For Heating (“Elect-A-Heat” Ceiling Assembly
Model Only) Refer To Figure 1, page 3).
The optional Elect-A-Heat heating assembly is intended to
take the chill out of the indoor air when the air is a few degrees
too cool for comfort. The heating assembly is an effective
“chill chaser”. It is not a substitute for a furnace.
Do not expect the heating coil on your heater to glow.
Because the fan draws in cold air and forces it over the coil,
the coil will not turn red. A hint of red may occur where the
moving air does not directly touch the coil.
A. Turn the selector switch to the “LOW HEAT”
position. At “LOW HEAT”, the fan operates on
low speed with heat output at maximum.
B. Rotate the thermostat (temperature control) switch
to the position that is the most comfortable to you.
The thermostat will turn the heater on when the
temperature of the air entering the air conditioning
unit drops below this setting a few degrees and
automatically turns off when the temperature of the
air entering the air conditioner rises a few degrees
above this setting. The heater will continue to cycle
on and off in this fashion until the selector switch
is turned to another mode of operation.
C. Position the louvers to the desired direction the
discharge air is to flow.
Discharge air temperature can be controlled to some
extent by opening or closing the louvers.
When the louvers are closed, the warmest localized
discharge air is achieved. Fully opened louvers
will throw the warm discharge air to the back and
front of the vehicle for more efficient circulation and
faster warm-up. Although the air temperature is
lower with the louvers fully opened, the heating
capacity is still the same.
V. For Air Circulation Only (Refer To Figure 1, page
3).
A. Turn the selector switch for “LOW FAN” or for
maximum air flow, to “HIGH FAN”.
B. Position the louvers to the desired direction the
discharge air is to flow.
NOTE
When the selector switch is in the “LOW FAN” or “HIGH
FAN” position, the blower motor will operate continuously.
SECTION IV - MAINTENANCE
1. Owner
One of the biggest advantages to your new RV Products air
conditioner is that the maintenance needed to keep the unit in
good care is minimal. In fact about the only thing you, the
owner, must take care of is the cleaning and replacement of the
filters.
Filters are made from long life non-allergenic natural fibers
which can be cleaned and reused, and which completely filter
the circulated air when the air conditioner is in operation. If
the filters are not cleaned at regular intervals, they may
become partially clogged with lint, dirt, grease, etc. A clogged
filter will produce a loss of air volume and may eventually
cause an icing-up of the cooling (evaporator) coil.
IMPORTANT
Do not operate your air conditioner for extended periods of
time without the filter installed.
An even more serious condition occurs when the air
conditioner is operated without a filter. When this happens the
lint, dirt, grease, etc. that are normally stopped by the filter are
now accumulating in the cooling coil. This not only leads to a
loss of air volume and a possible icing-up of the cooling coil,
but could also result in serious damage to the operating
components of the air conditioner.
We recommend that the filters be cleaned and changed at least
every two weeks when the air conditioner is in operation.

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Cleaning and/or changing the filters:
1. Disengage the two 1/4-turn fasteners that secure the
ceiling assembly grille to the ceiling assembly (See
Figure 2).
2. Lower the grille and filters from the ceiling assembly.
3. Take filters out and either clean or exchange with
other filters (See Figure 2).
4. If the vehicle is equipped with a flush mount ceiling
assembly, remove the four return air grill screws.
Remove filter from grill and either clean or
exchange with new filters.
NOTE
If replacement filters are necessary, the filters can be
purchased from most RV Products Authorized Service Centers.
It is recommended that spare filters be carried with the RV at all
times to replace worn, torn or deteriorated filters.
FIGURE 2
II. Service Person
A. Electrical - All electrical work and/or inspection
should be performed only by qualified service
personnel. Contact your nearest RV Products Service
Center if electrical problems should arise.
B. Check Points - Failure to start or to cool the air are
sometimes problems with air conditioning units.
The RV Products RV air conditioner is designed to
operate on 115 volt electrical power. If the
compressor on the air conditioner fails to start, check
with your RV Products Service Center to determine
that the proper wire size is connected to the unit, the
proper circuit breakers are installed as protection
devices on the electrical circuit and the proper sized
extension cord is being used for the distance covered
from the utility outlet to the RV. The required minimum
wire size is #12 AWG for lengths up to 25 feet (larger
wire size for greater distances). Each air conditioning
unit must be protected with a 20 amp time delay fuse or
circuit breaker.
If the air conditioner continues to trip off the circuit
breakers, have an electrician check the starting
amperage and running amperage on the unit. If
the circuit breaker continues to trip off and the
electrical consumption is found to be normal, it will
require the replacement of the faulty circuit breaker.
If all electrical power to the air conditioner is normal
but neither the fan or the compressor will operate,
the connector plug located behind the ceiling
assembly control box should be checked to
determine whether it is faulty.
On the heating-cooling air conditioner models, if all
electrical power to the unit is normal and the fan
runs but you never get any heated air, then the
electrical plug to the heating unit should be checked
for a secure connection. If this does not correct the
malfunction, the heating thermostat or limit switch
may be faulty.
C. Mechanical Integrity - The air conditioner should be
inspected periodically to be sure that the bolts which
secure the unit to the roof are tight and in good shape.
Also, an examination of the plastic shroud covering
the air conditioner on the top of the roof should be
made periodically. Be sure the four mounting screws
and washers are snug and holding the shroud to the
air conditioner. Also examine the shroud to be sure it
is not developing cracks or has suffered damage from
impact.
D. Lubrication
DANGER
DISCONNECT THE POWER SUPPLY TO THE UNIT
BEFORE SERVICING TO PREVENT A SHOCK HAZARD OR
POSSIBLE INJURY FROM MOVING PARTS.
The blower drive motor on some units may include oiling cups
at the top of the motor. There is no requirement to oil the
journals under normal operating conditions. However, if
lubrication to the unit is desired, use only SAE 20 non-
detergent type oil. DO NOT OVER OIL - three to four drops in
each oil hole once a year is sufficient.

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SECTION V - WALL THERMOSTAT IDENTIFICATION
AND OPERATION
ELECTRONIC SINGLE STAGE
HEAT/COOL THERMOSTAT
FIGURE 3
Heat/Cool Thermostat Shown.
“Cool Only” Model Has No Reference
To Heat On Face Of Thermostat.
^Suggested Fuse To Protect Wiring Leading To Thermostat
ªNot Found In “Cool Only” Applications
FIGURE 4

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OPERATION
The chart below shows the system functions with the “Heat/Cool” thermostat. After the entire air conditioning
system (and furnace system) is installed, check each position function. Disregard references to heat functions
when using the “Cool Only” thermostat.
All cooling functions controlling to setpoint 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 “Cool Only” thermostat.
SECTION VI - WARRANTY SERVICE
Let’s face it. Sometimes even the best products may need
service. To obtain warranty service on your RV Products air
conditioner, please contact your selling dealer, or you may
access our web site on the Internet atwww.rvcomfort.com for
answers to the most frequently asked questions and service
center locations.
RV Products support help may be accessed by E-mail at
[email protected].
All written correspondence should be directed to:
RV Products
A Division of Airxcel, Inc.
P.O. Box 4020
Wichita, KS 67204
IMPORTANT
1. Carefully read your limited two year product warranty
which is packed with the product.
2. An optional three year extended parts only contract
is available at an additional cost of $89.95. To obtain
this optional three years parts contract, fill out the
application card stapled to the front of this envelope.
Please mail the card and a check or money order to
the address above. Applications must be made
within ninety (90) days of the original purchase.
3. Inquiries about your RV Products air conditioner
must include the model and serial numbers and the
date of purchase. The model and serial numbers can
be found on the I.D. label located on the air
conditioner basepan return air opening at the bottom
of the roof unit. This information may also be found
on the air conditioner rating plate.