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During the winter, water inside the sprinkler can freeze, creating the risk of spray damage. If the outdoor air
temperature becomes 0°C or less, use one of the following two methods to drain water from the sprinkler.
[Drain all at once from module controller]
* Group must be stopped
(1) Set the operation of the heat pump to Stop.
To stop using the module controller, switch to "Stop" in the MC operation change screen.
(2) Set the module controller to Unit.
In the Remote change screen of the module controller, switch to "Unit".
(3) Close the gate valves of the water supply main pipe for the spray and stop water supply to each
module.
(4) Fully open the manual flow rate adjustment valve of the sprinkler inlet.
High EER Type Drainage
Open manual valve fully
Flow control valve (with strainer 60 mesh)
Solenoid valve
Water supply pipe
connection port
(PT15A male screw)
Close the gate valve.
Sprinkler inlet
Main pipes
Strainer (required)
Gate valves (required)
Water drain valves (required)
Air breather valves (required)
(1) Stop
(2) Unit
Module controller screen
