Toshiba HWS-802H-E Installations-Handbuch Seite 16

Air to Water Heat Pump
How to open the valve
Confirm the structure surely and then open or close the
valve.
▼ Liquid side
Open the valve with a 4-mm hexagon wrench.
▼ Gas side
Charge port
Closed completely
Main stopper
• While the valve is fully opened, after the screwdriver
has reached the stopper, do not apply torque
exceeding 5N•m. Applying excessive torque may
damage the valve.
Valve handling precautions
• Open the valve stem until it strikes the stopper.
It is unnecessary to apply further force.
• Securely tighten the cap with a torque wrench.
• Cap tightening torque
Ø9.5 mm
Valve size
Ø15.9 mm
Charge port
15-EN
Valve unit
Using a minus
screwdriver, turn it
counterclockwise by
90° until it hits the
stopper. (Full open)
Flare nut
Handle position
Opened fully
Stopper pin
Movable part of valve (Stem)
33 to 42 N•m (3.3 to 4.2 kgf•m)
20 to 25 N•m (2.0 to 2.5 kgf•m)
14 to 18 N•m (1.4 to 1.8 kgf•m)
Replenishing refrigerant
This model is a 30 m chargeless type that does not
need to replenish refrigerant for refrigerant pipes up to
30 m.
Refrigerant replenishing procedure
1. After the vacuuming of the refrigerant pipe is
completed, close the valves and then charge
refrigerant while the Air to Water Heat Pump is not
working.
2. When the refrigerant cannot be charged to the
specified amount, charge the required amount of
refrigerant from the charge port of the valve on the
gas side during cooling.
Requirement for replenishing refrigerant
Replenish liquid refrigerant.
When gaseous refrigerant is replenished, the
refrigerant composition varies, which disables normal
operation.
Additional amount of refrigerant
The refrigerant need not be reduced for a 30 meter (or
less) refrigerant pipe.
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Outdoor Unit Installation Manual