Dometic Elite Control Series, Installation And Operating Manual

Page: 18 / 32

18
EN
Operation Elite Control
Parameter Name DX CW Factory Default Parameter Range
P-13 Auxiliary Heat Enable
x x nOr
nOr = Disable
A-H = Auxiliary Electric Heat
Enable the operation of an optional auxiliary electric heater that if installed, can heat an individual cabin
when the chiller system is in cooling mode. Refer to “Wiring Diagrams” on page 6.
I
The following is applicable to software revision #A13 and older.
When this parameter is programmed for auxiliary electric heat, only the electric-heat relay located
toward the middle of the circuit board is energized during a heating cycle.
I
The following is applicable to software revision #A15 - #C30.
When programmed for auxiliary electric heat, both the electric-heater relay and the valve relay
are energized. This change supports newer circuit board revisions without the electric-heat
relay. Please consult with Dometic Customer Service or with an authorized service technician for
assistance.
– For CW systems: Circuit boards that do not have electric-heat relays require a display with
software revision A15 or newer to properly energize the compressor relay. Also, when using
this configuration, the electric heater L-1 connection must be connected to the COMP L-1
terminal on the AH-Passport I/O or U-board.
– For DX systems: Circuit boards that do not have electric-heat relays require a display with
software revision A15 or newer to properly energize the valve relay. Also, since the valve-relay
output only supports a maximum of 15 amps at 115VAC or 10 amps at 230 VAC (PPIO circuit
boards revision F and newer) of resistive load, when installing an optional electric heater that
exceeds this load, it is necessary to install an additional contactor that is rated to handle the
full load of the electric heater.”
P-14 Fan Motor Selection
x x SC
SC = Split Capacitor Fan Motor
SP = Shaded Pole Fan Motor
Set to SC for AC switch high-velocity blowers. Set to SP if your unit has a Shaded Pole fan motor. Refer
to “Programming the Control” on page 14.
P-15
Restore Factory Default
Settings
x x nOr
rST = Reset Defaults
nOr = Normal
To reset all programming parameters, set this parameter to rST. This restores all programmable
parameters to the factory default values.
P-16
Hydronic Water Valve
Forced Open
x nOr
OPn = Valve Forced Open
nOr = Normal Operation
Open the water valve to bleed air from the system.
• OPn: forces the valve open for four hours while the control is turned OFF. If the control is turned ON
or if AC power is interrupted during this four-hour period, the valve override is canceled.
• nOr: returns the valve to normal operation.
P-17
Water Temperature
Differential
x 15 °F (8 °C) 5 °F to 25 °F (3° C to 14 °C)
Set the temperature differential between the ambient air temperature and the hydronic water
temperature that controls the water valve. For example, selecting 10 °F (-12 °C) opens the valve when
the water temperature is 10 °F (-12 °C ) less than the ambient temperature in the cooling mode and 10
°F (-12 °C ) greater than the ambient temperature in the heating mode.
Careful selection of the temperature differential can fully utilize the ship’s heating and cooling resources.
For example, while in cooling mode and using a 10° F (-12 °C ) value, the valve will open to allow some
cooling while the hydronic system is coming down to temperature. Refer to “Air and Water Temperature
Differential (CW Systems Only)” on page 10 for a graphical explanation of this parameter.