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18

RECOMMENDED MAINTENANCE

VAPORSTREAM

®

 Model VLC Only

Using softened water will significantly reduce mineral
build-up in the humidifier.  When softened water is not
available, the VAPORSTREAM VLC is designed to deal
with water hardness in one of two ways depending on the
degree of hardness.  For light to moderate hardness, up to
10 grains per gallon ( 170 mg/l), using the surface water
skim time feature with annual cleaning is recommended.
For high mineral content water, above 10 grains per gallon
(170 mg/l), a periodic drain and flush through the motor-
ized drain valve, in addition to the surface water skim time
feature, is recommended. The frequency of cleaning will
depend on water condition and evaporation load.

The humidifier should be inspected for leaks at least
annually. Also, the current draw of the heaters should be
checked and all safety devices in the control circuit should
be cycled on and off to verify that they are functioning.

Caution:  When performing maintenance on the
VAPORSTREAM Model VLC, always set control module
switch to "STBY” position, place main disconnect in “OFF”
position, and close manual water shut-off valve.

Seasonally or as Required
1. Cleaning Tank
 - Slide the clean-out tray out and
dispose of any loose scale that has collected in the tray.
This should be done before the build-up reaches the
underside of the heating elements.
2.  Cleaning Probes - Disconnect the plug and cable
assembly and unscrew the probe holder from the
VAPORSTREAM VLC unit.  The scale will easily flake off
from the sensing portion.  The sensing portion, bottom
3/8" (10 mm), of the probe should be brushed clean with
stainless steel wool.
3.  Cleaning Skim Overflow Port - Loosen deposits with
a long tool, such as a screwdriver.  Proper skimmer
drainage should be verified by a weekly visual inspection.
Water should drain from skimmer drain pipe after each fill
cycle.  (For cleaning piping, disconnect and flush out.  If
mineral deposits have restricted the flow, replace piping.)

Summer Maintenance
After the humidification season, a complete inspection and
cleaning of the heaters, probe control, skimmer port, and
water chamber is recommended.  After cleaning, the unit
should remain empty until  humidification is required.

Adjusting the Surface Skim Bleed-Off Quantity
The skim time determines the quantity of water skimmed
with each fill cycle.  The skim time is field adjustable
using the VAPOR-LOGIC

®

  keypad.

Each time the VAPORSTREAM VLC refills, it fills to an
elevation near the lip of the skim overflow fitting.  A
portion of the refill water then flows to drain carrying the
minerals floating on the water with it.  This reduces the
mineral concentration, thereby reducing the frequency of
cleaning needed.

The heated water that flows to drain is a cost of
operation.  Cleaning the humidifier is also an operational
cost.  Therefore, it is recommended that the user observe
and adjust the skimming quantity. By doing so, a balance
between minimizing mineral build-up and conserving hot
water can be achieved.

VAPORSTREAM

 

 Model VLDI Only

The humidifier should be inspected for leaks at least
annually. Also, the current draw of the heaters should be
checked and all safety devices in the control cabinet
should be cycled on and off to verify that they are func-
tioning.

Make-up Water Piping
Use cold or hot makeup water. If the water pressure is
above 60 psi (410 kPa) and/or water hammer would be
objectionable, a pressure reducing valve or shock arrester
should be installed. Even though the VAPORSTREAM
VLC has an internal 1" (25 mm) air gap, some local codes
may require a vacuum breaker.

Caution: Minimum water supply pressure is 25 psi (172
kPa).

Cleaning Evaporating Chamber
As long as mineral-free water is used in the
VAPORSTREAM VLDI, no cleaning or flushing of the
evaporating chamber should be necessary.

For trouble-shooting instructions, see the VAPOR-LOGIC

®

Installation Instructions and Maintenance Operations
Manual.

TROUBLE-SHOOTING GUIDE

Содержание VLC

Страница 1: ...E THESE INSTRUCTIONS VAPORSTREAM Models VLC and VLDI ELECTRIC STEAM HUMIDIFIERS Installation Instructions and Maintenance Operations Manual For Toll Free Technical Support Call1 800 328 4447 CUL LISTE...

Страница 2: ...ormation differs for the two units it will be noted as such DRI STEEM Humidifier Company VAPORSTREAM Models VLC and VLDI 3 MechanicalSpecificationsandCapacities 4 MechanicalSpecifications 5 VAPORSTREA...

Страница 3: ...available for use with these water types The stan dard humidifier can be converted in the field to a VLDI model See below VAPORSTREAM VLDI Option For use with deionized or reverse osmosis water This u...

Страница 4: ...6 1 4 4 1 2 7 8 5 6 1 9 7 5 2 7 1 1 3 1 3 3 4 5 7 3 8 8 1 0 5 1 0 5 2 7 1 2 8 0 1 7 8 9 1 2 1 2 4 3 5 5 1 3 1 0 5 2 0 0 2 3 3 3 9 8 2 4 4 1 5 1 1 2 1 1 6 1 6 5 4 7 0 2 3 1 3 3 3 7 6 2 4 4 4 5 8 3 2 9...

Страница 5: ...00 560 18 38 465 20 35 515 79 36 237 108 M 18 2 22 00 560 18 38 465 20 35 515 79 36 237 108 M 24 2 22 00 560 18 38 465 20 35 515 79 36 237 108 M 32 2 22 00 560 18 38 465 20 35 515 79 36 237 108 M 42 2...

Страница 6: ...00 lbs hr 45 kg hr 150 lbs hr 65 kg hr 200 lbs hr 90 kg hr 250 lbs hr 110 kg hr 285 lbs hr 130 kg hr 60 F 16 C 30 Rise 1 ft 0 5 m 4 ft 1 5 m 6 ft 2 0 m 7 ft 2 5 m 8 ft 2 5 m 9 ft 3 0 m Spread 2 ft 1 0...

Страница 7: ...nk may be removed periodically through the front clean out opening Allow space for withdrawal of the tray when install ing the humidifier In some installations an overflow drain pan may be neces sary...

Страница 8: ...low Air Handling Unit Casing Humidifier Centered in Air Handling Unit OM 653 6 Mounting In Air Handling Unit Gasketed Access Door Supply Air Duct Set unit level Locate unit so that steam dispersion as...

Страница 9: ...d Piping when used Hard piping should have a minimum I D of 1 35 mm A minimum pitch of 2 per foot 165 mm m back to the humidifier must be maintained 90 elbows are not recommended use two 45 elbows one...

Страница 10: ...Drain Tube Figure 10 2 Multiple TubewithCondensate Return to Humidifier Dispersion Tube Dispersion Tube Duct Water Seal 5 125 mm approx 13 mm Air Vent 6 150 mm Min 1 38 mm Dia Vapor Hose or Hard Tubin...

Страница 11: ...attach the weather cover top and panels C and D which were removed in step 1 6 Check that all bolts are securely fastened 7 Connect steam dispersion device s to the outlet s on thehumidifier 8 Verify...

Страница 12: ...duct Identification Label D 2 2 1 e r u g i F r e t t e L t u o l l a C n o i t p i r c s e D t u o l l a C e e r h T s e h c n i e e r h T m m x i S s e h c n i x i S m m e n i N s e h c n i e n i N...

Страница 13: ...spersion tubes then slide hose cuffs or slip couplings over header dispersion tube nipples Position the header so dispersion tubes are perpendicular to duct and pitch the header to condensate drain Se...

Страница 14: ...al pressure drop in piping hose of 5 12 65 mm W C For developed length add 50 to measured length for pipe fittings Note To minimize lossof humidifier capacity and efficiency it is recommended that tub...

Страница 15: ...100 C or greater temperature If not the final three feet one meter connected to the humidifier should be metallic and should not be insulated As part of the fill valve assembly the needle valve restr...

Страница 16: ...Clean out Plate Three Probe Level Control and Low Water Cut off Drain Connection Open Drain Air Gap Drain and Water Seal Piping 20 mm by installer Manual or Optional Electric Drain Valve Water Supply...

Страница 17: ...ng codes and the enclosed VAPORSTREAM VLC wiring diagram Caution Only qualified electrical personnel should perform start up procedure ControlSystem For start up instructions see the operations and ma...

Страница 18: ...le For cleaning piping disconnect and flush out If mineral deposits have restricted the flow replace piping SummerMaintenance After the humidification season a complete inspection and cleaning of the...

Страница 19: ...ix Heater 167720 TAB 2 Cover Nine Heater 167725 TAB 2 Cover Twelve Heater 167730 TAB 3 Cover Heater Louvered 167740 TAB 4 Knob T Handled Utility 700725 5 Heater 409600 TAB 6 Gasket Cover 160691 TAB 7...

Страница 20: ...7 Clean Out Plate 165472 8 Gasket Clean Out Plate 308225 9 Switch Door Interlock 408475 10 Thermal Cut Out 409560 001 11 Valve Ball Manual Drain 505000 001 12 Float Valve Assembly 505210 13 DI Housin...

Страница 21: ...21 DATE INSPECTED PERSONNEL OBSERVATION ACTION PERFORMED MAINTENANCE SERVICE RECORD...

Страница 22: ...22 DATE INSPECTED PERSONNEL OBSERVATION ACTION PERFORMED MAINTENANCE SERVICE RECORD...

Страница 23: ...tten consent of DRI STEEM or if such products have been subject to accident misuse mishandling tampering negligence or improper maintenance Any warranty claim must be submitted to DRI STEEM in writing...

Страница 24: ...hangewithoutnotice DRI STEEM RAPID SORB STS LTS VAPOR LOGIC and VAPOR LOGIC2 are Registered Trademarks of the DRI STEEM Humidifier Company TEFLON is a Registered Trademark of Dupont 14949TechnologyDri...

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