GeneralAire DS50 LC Elite Steam - Manual (Page 12)

DS 50 / DS 50 LC +030222065 Rev. 1.2 12
min. 5°
4
5
3.3.3 Water
Drain
The DS50 and DS50 LC requires a connection to a drain. The drain line may be routed out the
back or bottom of the unit using the included angle fitting. The drain line can be 1-1/4” PVC,
CPVC or polypropylene. The drain line is not glued or otherwise attached to the humidifier so it
must be supported by itself. A coupling should be used. The DS 50 / DS 50 LC includes a drain
tempering valve that runs whenever the drain pump runs and flushes cool water into the drain line
to insure the drain water temperature never exceeds 60°C or 140°F.
The drain water characteristics are:
• Drain Rate 26.8 liter per minute or 7.1 gallons per minute
• Connection 32mm or 1 1/4”
• Temperature 60°C or 140°F
NOTE: Drain line must be trapped under the unit to prevent flash steam from condensing in the
unit
cabinet.
3.3.4 Drain
Connections
When using a rear outlet drain passing through drywall, we suggest using a 1 1/4” extension tube type SJ (see Fig. 3.i).
When using a bottom outlet drain, attach the included 90° fitting to the drain outlet. The drain outlet may be rotated. Then
connect a 1 1/4” trap adaptor to connect to drain pipe.
IMPORTANT WARNING: The drain pipe must be free without back pressure. We recommend an external anti-
flooding device not supplied to protect from faults of external hydraulic circuits.
3.4 Steam distribution
3.4.1 Duct steam injection
The maximum allowed duct static pressure is 2 in WC.
The DS 50 / DS 50 LC duct injection models include a 12” Steam Distribution Manifold
Select an accessible location on the duct, allowing at least 36” of straight duct (no elbows or obstructions) after the point where the
manifold will be installed and the clearances can be maintained as per the following drawings. See Fig. 3.j To mount the steam
manifold, cut a 2 ½” hole in the duct. Install the supplied o-ring or apply caulk to the mounting plate of the nozzle. Attach the
manifold to the duct using four sheet metal screws. Manifold must level or vertical to condensate outlet to the bottom. Connect the
steam and condensate hoses using the clamps supplied.
Note: End support bracket supplied only with 36” and longer manifold.
IMPORTANT:
1. Allow 3 feet (1m) of straight duct downstream of the manifold for absorption of the steam.
2. Always allow 2 feet (0.6m) of straight duct upstream of the manifold. Turbulent air flow may require more.
3. Duct must be kept warm. Ducts in unconditioned spaces or over faulted ceilings must be well insulated to
prevent condensation.
Steam outlet dia. mm (in) 30 (1.2”) DS 50
DS 50 LC
Max capacity kg/h (lb/h) 9 (20)
Steam distributor
Steam inlet dia. mm (in) Max. capacity kg/h (lb/h) Length mm (in)
7599 (50-09 steam distributor) 30 (1.2”) 15 (33) 300 (11.8)
Fig. 3.j
Fig. 3.i
Steam Inlet
Condensate drain
Flange gasket
Mounting screws