Toshiba MD-VNK802HEXE, Руководство по обслуживанию

Страница: 28 / 214

26
14 Freeze
protection
control
(Low
temperature
release)
(Continued) 2) In Cool operation, the operation is performed depending on the temperature
detected by TC2 or TCJ sensor.
• The thermo is turned off forcedly if the "M" zone is detected for 45 minutes.
• The timer is stopped and retained when in "N" zone.
• The timer restarts and continues counting down when it enters the "M" zone again.
• If the "L" zone is detected, the timer is cleared and the normal operation restarts.
Recovery conditions
1) TC1
12 °C and TC2 12 °C and TCJ 12 °C
2) 20 minutes have passed since it stopped
15 Cooling oil
(refrigerant)
collecting
control The indoor unit in stoppage, thermo OFF, or "fan" operation performs the following
controls when it receives the cooling oil (refrigerant) collecting signals from the outdoor
unit:
1) Open the indoor unit PMV to a given extent.
2) Operate the drain pump during collecting control and for approximately one
minute after the control is finished. (When separately sold drain up kit is set)
The collecting operation
is usually performed
every two hours.
16 Heat
refrigerant
(oil)
collecting
control The indoor unit in stoppage, thermo OFF, or "fan" operation performs the following
controls when it receives the heating refrigerant (oil) collecting signals from the
outdoor unit:
1) Open the indoor unit PMV to a given extent.
2) Detect the TC2 temperature to close the PMV.
3) Count the number of collecting controls, and operate the indoor fan and drain
pump for approximately one minute after the control is finished until the count
reaches the specified number.
• The indoor unit in
Cooling thermo OFF or
"fan" operation stops
the fan and displays
"Prep".
• The collecting
operation is usually
performed every hour.
17 Nighttime
heat purge This function is valid only for the Air to Air Heat Exchanger with DX Coil Unit system
linked with air conditioners (Invalid for Air to Air Heat Exchanger with DX Coil Unit
system)
1) If the [ON / OFF] button is pressed during operation, the Air to Air Heat Exchanger
with DX Coil Units and the air conditioners stop, and the system enters the nighttime
heat purge mode (standby mode).
* The setting of nighttime heat purge (Valid / Invalid) needs to be changed with
CODE No. (DN) [4C].
2) Conditions that make the nighttime heat purge setting valid
• When the air conditioners and Air to Air Heat Exchanger with DX Coil Units are stopped
• When the operation mode before the stop of the air conditioner header unit is Drying or
Cooling
• Invalid when the air conditioners are stopped in states where only the Air to Air Heat
Exchanger with DX Coil Units are stopped
• Invalid when only the Air to Air Heat Exchanger with DX Coil Units are stopped
3) When the nighttime heat purge setting is valid
• The mode moves from the stop of the Air to Air Heat Exchanger with DX Coil Units to
the nighttime heat purge operation mode (standby mode).
4) Nighttime heat purge operating conditions:
If time specified in CODE No. (DN) [4C] (1 to 48 hours) has passed, the temperature
monitoring operation is performed for five minutes (Heat Exchange mode), and the
nighttime heat purge operation starts if the following conditions are met.
• TRA
TOA + 3 °C and TRA Ts + 2 °C and TOA TRA/10 + 14.5 °C and the
outdoor unit operation mode is not Heating
No. Item Specification outline Remarks
TC2, TCJ
P2 5
Q2 -2.0
SET DATA Setting
0 Nighttime heat purge: Invalid (default)
1 - 48
Enter the nighttime heat purge operation in
(the value x one hour)