Water Supply Piping For A Humidifier (Vnk Type Only); Installation Of Ducts - Toshiba MMD-VNK502HEX1E Manual De Instrucciones

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/ℓ. 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 (locally procured).
• Use water which meets the following conditions:
4 4
• Water pressure: 2×10 Pa to 49×10 Pa
• Water temperature: 5 °C to 40 °C
• Attach a service valve or drain valve (locally procured) 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.
Heat insulator (for the
water supply pipe)
Water inlet connecting
part size
R1/2
Cap
119-EN
Heat insulator
(for the
strainer)
Unit
Service valve
Drain valve
8

Installation of ducts

CAUTION
Insulate the ducts to prevent condensation.
Inappropriate installation results in water leaking into the room and furniture may be damaged.
Suction duct length must be longer than 850 mm.
 Installing ducts
1
Insert the duct into the duct connector, then fix the duct using aluminum tape to prevent air from
leaking.
2
Hang the duct from the ceiling so that excessive force is not applied to the unit.
3
Leave sufficient space between the room air discharge and the room air intake.
4
Install 2 ducts to the outside inclined downward between 1/100 and 1/50 so that water does not
enter the ducts.
Aluminium tape
Heat insulator
Unit
Duct
Duct connector
(1/100 to 1/50)
5
Insulate 2 ducts to the outside and the SA (supply air) using a heat insulator to prevent
condensation.
(Material of insulator: glass wool, 25 mm thick)
NOTE
• Refrain from the following duct installation works.
1) Excessive bending 2) Multi-times bending
• When metallic ducts pass through a wooden construction covered with a metal lath, wire lath, or metal plate, install
the ducts so that they are not electrically in contact with the metal parts of wooden construction.
• Keep the temperature in the ceiling cavity at 5 °C or more; otherwise, freezing and water leakage may occur due to
the built-in humidifier. (VNK type only)
• Even while the unit is not in operation, outside air may enter the room due to a pressure difference between the
outside air and inside air, or outside wind. Using an electric damper is recommended.
• Install a ventilator in the ceiling cavity when it is hot and the humidity is high.
• When the outdoor hood for the air intake is located near a window and small insects gather around the light, they may
get through the pipes and enter the room. Before installation, consider countermeasures such as setting up a filter
box (Locally procured).
• Arrange the pipes so that supply air and exhaust air are not mixed.
• When a vent cap or a round hood for an outdoor hood is used, do not attach the hood to a place where rain may fall
directly. In this case, using a rectangle hood is recommended.
• Stuff the cracks in the pipe penetration part with a noncombustible material such as mortar.
– 60 –
Heat insulator
(Insulates the adapter and the aluminium tape)
Outside air intake duct, Air discharge duct
Slope
Aluminium tape
3) Making the connecting duct 4) Bending near the exhaust air
smaller duct
Aluminium tape
120-EN