Toshiba MD-VNK802HEXE Service Manual page 151

7
Water Supply Piping for a Humidifier (VNK
type only)
CAUTION
Install the water supply pipes after washing the inside of them with water.
Install a drain valve on the water supply pipe, then drain the water until the drained water runs clear.
Do not to allow cutting fluid or detergent to enter the pipes.
The water quality of the humidifiers supply water should meet public waterworks standards, and have a hardness less
than 100 mg/ . If the supply water does not meet these standards, use a deionizer.
NOTE
• If the installation place is subject to freezing, perform anti-freezing work.
• Do not connect the water supply pipe directly to the public water pipe. Use a cistern tank (procured locally).
• Use water which meets the following conditions:
• Water pressure: 2×10
• Water temperature: 5 °C to 40 °C
• Attach a service valve or drain valve (procured locally) near the water intake.
While the humidifier is not in operation, the water inside the pipes and cistern tank does not flow and becomes
stagnant.
If the stagnant water is used for water supply in the initial stages of using the humidifier (heater), a smell may come
out or bacteria may multiply.
If you do not use the humidifier for a long time, drain off water from the pipes and from the cistern tank.
Before the season for using the humidifier (heater) arrives, open the drain / water supply valves to exchange the water
inside the pipes.
• Close the water supply valve when the season for using the humidifier (heater) has passed.
• Prevent corrosive gas, salt, or oil mist from entering the air.
• Clean the strainer for water supply when the season for using the humidifier (heater) arrives.
• Fix the water supply pipes so that excessive force is not applied to them.
• Arrange the pipes so that they do not obstruct opening the maintenance cover for the heat transfer element /
humidification element or removing the humidification element.
• Do not allow cutting fluid from being mixed with the supplying water as it causes the humidifying unit or drain pan to
deteriorate. If cutting fluid sticks to it, wash it immediately in a sufficient amount of water.
• Use 2 wrenches, to connect a pipe to a single union pipe joint or to remove it from the single union pipe joint.
• Drain off water from the cistern tank when the humidifier is not used.
4 4
Pa to 49×10 Pa
Heat insulator (for the
water supply pipe)
Water inlet connecting
part size
R1/2
Cap
Heat insulator
(for the
strainer)
Service valve
Drain valve
149
Installation Manual
Unit