Dettson COND-30-01, Инструкция по установке и руководство пользователя

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13
5- FUNCTIONS AND CONTROL
OUTDOOR UNIT
5.1- THERMOSTAT
5.1.1- Communicating thermostat (R02P029)
The unit must be used with the Dettson communicating thermostat
(R02P029) in order to work as a fully modulating unit. In this case, the
interface card (K03069) will be able to gather information from the outdoor
unit, the furnace and the thermostat, making this integrated system very
easy to install and increased home owner comfort. The indoor blower
speed will be determined by various factors including outdoor temperature,
compressor speed and demand from the thermostat. The balance point
(temperature at which the unit will switch from heat pump heating to
auxiliary heat) will be adjustable through the thermostat. If this unit is
destined to be used as a cooling system only, the heat pump feature can
also be disabled altogether from the communicating thermostat.
For more details refer to the manual provided with the thermostat.
Auxiliary Heating
Heat pump Disable
This feature is applicable only in the heat pump mode. When this feature is
selected, the thermostat will switch to electric heat and shut off the
compressor when the outside temperature falls below the HP balance
point. In the Thermostat User Menu, select the temperature which can be
between 5 to 50°F.
Dual Fuel Disable
This feature is applicable only in the heat pump mode. When this feature
is selected, the thermostat will switch to fossil fuel heat and shut off the
compressor when the outside temperature falls below the DF balance
point. In the Thermostat User Menu, select the temperature which can be
between 5 to 50°F.
5.1.2- Legacy thermostat
Shall the unit be controlled by a one or two stage thermostat, the unit will
only be able to run as a one or two stage unit. Hence, the indoor blower
speed will only be controlled by the air handler, leading to a fixed air flow
operation. In this configuration, the balance point can be set using the
dipswitches S1-1 to S1-4 (see Table 2). The Auxiliary heat or heat pump
function can also be disabled using these same switches.
5.1.2.1 Balance point adjustment
When the dipswitch bank is set accordingly, the interface card will modify
the heat source in function of the outdoor temperature. The outdoor unit
will send the temperature reading through the serial communication wires
(COND1 and COND2), with no need to install a separate temperature
sensor. The unit will heat using the heat pump until the outdoor temperature
goes below the balance point that was set according to the dipswitch table
below.
Table 2: Dipswitch adjustment
DIP1-2 DIP1-3 DIP1-4 Balance point
OFF OFF OFF 5°F(-15°C)
OFF OFF
ON
-13°C
OFF ON OFF -11°C
OFF ON ON -9°C
ON OFF OFF -7°C
ON OFF ON -5°C
ON ON OFF -3°C
ON ON ON
-1°C (Heatpump heat
only)
5.2- FUNCTION & CONTROL
5.2.1- Temperature Parameters

Indoor thermostat temperature (
𝑇
𝑝𝑟𝑒𝑠𝑒𝑡
)

Indoor ambient temperature (
𝑇
𝑎𝑚𝑏
.)
Note:
T
compensation
is determined by indoor and outdoor units. If the indoor
unit controls temperature compensation,
T
compensation
is determined by the
value sent to the outdoor unit by the indoor unit; if it is not controlled by the
indoor unit,
T
compensation
will be 3°C (5.4°F) as default.
5.2.2- Basic Functions
Once energized, in no case should the compressor be restarted within less
than 3 minutes. In the situation that memory function is available for the
first energization, if the compressor is at stop before de-energization, the
compressor will be started with a 3-minute lag; and once started, the
compressor will not be stopped within 6 minutes regardless of changes in
room temperature.
1. Cooling mode
Working conditions and process of cooling
(1) When
𝑇𝑎𝑚𝑏 ≥ 𝑇𝑝𝑟𝑒𝑠𝑒𝑡
, the unit will enter cooling operation, in
which case the indoor fan, the outdoor fan and the compressor
will work and the indoor fan will run at pre-set speed.
(2) When
𝑇𝑎𝑚𝑏 ≤ 𝑇𝑝𝑟𝑒𝑠𝑒𝑡 − 2°𝐶 (3.6°𝐹),
the compressor will stop,
the outdoor fan will stop with a time lag of 60s, and the indoor
fan will run at pre-set speed.
(3) When
𝑇𝑝𝑟𝑒𝑠𝑒𝑡 − 2°𝐶 (3.6°𝐹) < 𝑇𝑎𝑚𝑏. < 𝑇𝑝𝑟𝑒𝑠𝑒𝑡 + 1°𝐶 (1.8°𝐹),
the unit will remain at its previous state.
Under this mode, the four-way valve will be de-energized and temperature
can be set within a range from 16.1°C (61°F) to 30°C (86°F).If the
compressor is shut down for some reason, the indoor fan and the swing
device will operate at original state.
Protections

Antifreeze protection
Under cooling, 6 minutes after the compressor is started:
(1) If 𝑇
𝑒𝑣𝑎𝑝
≤ 2°𝐶 (35.6°𝐹 ), the compressor will operate at reduced
frequency;
(2) If
𝑇
𝑒𝑣𝑎𝑝
≤ 1°𝐶 (30.2°𝐹
), is detected for durative 3 minutes, the
compressor will stop, and after 30 seconds, the outdoor fan will
stop; and under cooling mode, the indoor fan and the swing
motor will remain at the original state;
(3) If
𝑇
𝑒𝑣𝑎𝑝
≥ 6°𝐶 (42.8°𝐹
), and the compressor has remained at
OFF for at least 3 minutes, the compressor will resume its
original operation state.

Total current up and frequency down protection
(1) When total current
I
total
≤16A, increasing frequency is allowed;
(2) When total current
I
total
≥17A, increasing frequency is prohibited;
(3) When total current
I
total
≥18A, the compressor will run at reduced
frequency;
(4) When total current
I
total
≥20A, the compressor will stop and the
outdoor fan will stop with a delay of 60s.
2. Heating Mode
Working conditions and process of heating
(1) If
𝑇𝑎𝑚𝑏. ≤ 𝑇𝑝𝑟𝑒𝑠𝑒𝑡 + 2°𝐶 (3.6°𝐹
), the unit enters heating mode,
in which case the four-way valve, the compressor and the
outdoor fan will operate simultaneously, and the indoor fan will
run at pre-set speed in the condition of pre-set cold air
prevention.
(2) If 𝑇 𝑎𝑚𝑏. ≥ 𝑇𝑝𝑟𝑒𝑠𝑒𝑡 + 5°𝐶 (9°𝐹 ), the compressor will stop, the
outdoor fan will stop with a time lag of 60s, and the indoor fan
will stop after 60-second blow at low speed
(3) If 𝑇𝑝𝑟𝑒𝑠𝑒𝑡 + 2°𝐶 (3.6°𝐹) < 𝑇𝑎𝑚𝑏. < 𝑇𝑝𝑟𝑒𝑠𝑒𝑡 + 5°𝐶 (9°𝐹 ), the
unit will maintain its original operating status.
Under this mode, the four-way valve is energized and temperature
can be set within a range of 16.1°C (61°F) to 60°C (86°F). The