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Toshiba
Outdoor unit
16 Outdoor Unit Setting
16-1. Refrigerant recovery control
Although HFC refrigerant is "Ozone depletion potential = 0", emission control is applied to it as a greenhouse effect
gas.
This model has a switch for the outdoor unit to perform an environment-friendly refrigerant recovery operation
(pump down) when the model is replaced or discarded.
[How to operate]
1 Remove the water in the hydro unit.
(With the water remained in the hydro unit, performing
refrigerant recovery may freeze the water and burst the
unit.)
2 Set all the SW804 dip switches to OFF (initial status),
and press the push-button switch SW801 for approx.
1 second.
A cooling operation starts. (During the operation, D805
(green LED) blinks.
Note that this operation lasts for 10 minutes.
3 After 3 minutes has passed, close the liquid-side
valve.
4 After the refrigerant recovery is completed, close the
gas-side valve.
5 Press again the push-button switch SW801 for
approx. 1 second. The outdoor unit stops operation (cooling).
16-2. Outdoor unit settings (Existing piping, Power save, etc.)
The following settings are available with dip switch setting and jumper wire setting.
Function Where to set Control details
Existing piping
setting
When using a Ø19.1 pipe for the existing piping, set the switch to ON.
This case may decrease heating capacity depending on the outside air
temperature when heating or on a room temperature.
Power save setting When using the power save function, set the switch to ON. This setting
controls the compressor frequency lowering (about 10%) according to the
heat exchange temperature of the hydro unit during a heating or hot water
supply operation.
Snow prevention
fan control
This control enables the function that prevents snow from entering the draft
air duct through the fan guard or a heat exchanger gap and causing moter
lock. If the outside air temperature is 0°C below, this control operates the
outdoor fan in W5 even if the compressor is not in operation.
Defrosting time
change
J805, J806 If the defrosting interval is shorter than the standard, the jumper wire is cut.
For the control details or how to cut the jumper wire, see defrosting control.
Maximum
frequency change
J807 If the maximum value of compressor frequency need to be lowered, cut the
jumper wire shown on the left.
This control lowers the maximum frequency when hot water supply, heating,
or cooling is in operation. (HWS-802H-E only)
In this case, the maximum capacity decreases.
Maximum frequency of compressor
1234
ON
1234
ON
1234
ON
D800
D801
D802
D803
D804
D805
SW804 All OFF (Initial status)
SW801 Press for
approx. 1 sec
SW805 (Green LED) blinks.
1234
ON
SW802
--- OFF
--- Existing piping setting
--- Power save setting
--- Snow prevention fan control
* All OFF position at factory setting
Model
HWS-802H-E HWS-1102H-E HWS-1402H-E
Cooling Heating Cooling Heating Cooling Heating
Standard 70.2 70.2 60.0 60.0 70.2 70.2
J807 cut 53.4 64.2 60.0 60.0 70.2 70.2
+00A09-002_01EN_SVM_ALL_Air_to_Water.book Page 120 Monday, October 5, 2009 2:09 PM