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An optional auxiliary electric resistance heating assembly
can be installed to take the chill out of the indoor air when
the heat pump can no longer operate. The heat pump will
shut down at conditions which would cause outdoor coil
freeze-up, generally near freezing temperatures.
This roof mount heat pump is designed to operate from a 115
VAC, 60 HZ, 1 Phase power supply. A qualified technician
should verify that the heat pump is receiving the proper power.
In the cooling mode, the temperature drop from inlet to supply
will be 15 to 20 degrees. In the heating mode, the temperature
rise from inlet to supply will be 25 to 40 degrees unless the
outdoor temperature has dropped sufficiently to cause the
freeze switch to activate. In that case, the rise will be only 10
to 20 degrees. Any deviations from these norms are cause to
examine the system for dirty air filters or dirty outdoor coil.
If your RV heat pump 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 heat pump
They are as follows:
A.
The Selector Switch – The selector switch determines
which mode of operation the heat pump 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.
TABLE OF CONTENTS
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Standard Ceiling Plenum Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Standard Ceiling Plenum Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Wall Thermostat Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warranty Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I. GENERAL INFORMATION
NOTE
II. CONTROL PANEL
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.
R410A Roof Top Heat Pumps
High Pressure Switch Lockout Circuit
Heat pumps using R410A refrigerant utilize a factory installed
High Pressure Switch Safety Circuit. In the event of an
abnormal condition (failure of fan motor, dirty condenser coil,
dirty filters), the high pressure switch will prevent the
compressor from continuing to run. Once the high pressure
switch has tripped, this safety circuit will "Lock Out" the
compressor preventing it from trying to restart or run until the
115 VAC supply power has been turned off and then back on
to reset the High Pressure Switch Safety Circuit. If repeated
trips of the high pressure switch lock out occur, then you must
have the unit serviced by a qualified technician.
The "Operation" section explains the operational
characteristics of each mode of operation.
B.
The Thermostat (temperature control) – The
thermostat regulates the "ON" and "OFF"
temperature setting at which the compressor will
operate (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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