DriSteem VAPORMIST Specifications download pdf (Page 12)

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Supply water and drain piping

Supply water piping may be of any code-approved material (copper,

steel, or plastic). The fill valve connection size is a ¼" pipe thread

(DN8) fitting except in Europe where it is a DN10 pipe thread

fitting. In cases where water hammer may be a possibility, consider

installing a shock arrestor. Water pressure must be between 25 psi

and 80 psi (175 kPa and 550 kPa).

If water piping to humidifier is nonmetallic, we recommend that

the first 3' (1 m) of water supply piping from the humidifier be

metallic with a 2" (50 mm) water seal or loop in the supply line to

isolate steam from nonmetallic supply piping.

Drain piping may be of any code-approved material (copper,

steel, or plastic rated for 212 °F [100 °C] minimum). If drainage

by gravity is not possible, use a reservoir pump rated for 212 °F

(100 °C) water (DRI-STEEM Part No. 400280 for 120V pump and

Part No. 400281 for 230V pump).

The final connection size is ¾" (DN20) copper for the tank and

frame drains. Do not reduce this connection size. Pipe the tank and

frame drains separately, as shown in Figures 8-1 and 9-1, to prevent

backflow of drain water into the humidifier cabinet.

If the equivalent length of pipe from the humidifier drain to the

plumbing system drain is more than 10' (3 m), increase the pipe

size to 1¼" (DN32).

See Figures 8-1 and 9-1 for more piping instructions.

Important: Install unions in the water supply and drain lines as

shown in Figures 8-1 and 9-1 to allow tank removal.

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WARNING!

Opening the drain valve when the tank is hot

can discharge water with a temperature up

to 212 °F (60 °C) into the plumbing system.

This can cause damage to the plumbing

system if the humidiﬁer is not properly

connected to a water tempering device such

as a DRI-STEEM Drane-kooler™.

Do not touch the tank or drain piping until

the unit has had sufﬁcient time to cool, or

serious injury can occur.

Figure 10-1:

Drane-kooler water tempering device

DRI-STEEM's Drane-kooler, shown mounted

to a Vapormist humidifier, tempers

discharged water. For other Drane-kooler

mounting options or for more information,

contact your DRI-STEEM representative/

distributor, or view the Drane-kooler

product data sheet in the literature section

at www.dristeem.com

OM-7398

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DriSteem VAPORMIST Specifications Page 12

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