DriSteem Ultra-sorb LH Installation, Operation And Maintenance Manual Download

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DRI-STEEM Ultra-sorb Steam Dispersion Panel Installation, Operation, and Maintenance Manual • Page 25

Tr o u b l e s h o o t i n g g u i d e

Table 25-1:
Ultra-sorb troubleshooting guide

Problem

Possible cause

Action

Space humidity will not
rise to humidistat set
point

• Steam pressure too low

• Increase.

• Manual steam valve partially closed

• Open.

• Strainer screen partially clogged

• Clean.

• Boiler pressure too low

• Adjust control.

• Pressure reducing valve not accurately

controlling steam pressure

• Repair or replace.

• Boiler pressure swinging too widely

• Adjust controls.

• Incorrect piping

• Repipe. See Page 16.

• Undersized steam piping

• Replace.

• Undersized humidiﬁer

•  Replace valve with larger capacity valve.
•  Replace with larger humidiﬁer.
•  Add additional humidiﬁer.

• Automatic steam valve not fully opening

• Valve packing is adjusted too tightly, loosen and/or replace

packing.

• Adjust valve linkage.
• Recalibrate humidistat.

• Electric control system malfunctioning

• Change transformer.

• Incorrect control circuit voltage

• Replace component(s) to make all components compatible.

• Incorrect control signal

• Replace components.

• Improper wiring

• Rewire.

• Incorrect humidity sensor

• Replace sensor.

• Humidity controller out of calibration or

malfunctioning

• Repair or replace.

• Malfunctioning humidiﬁer temperature switch

not allowing humidiﬁer valve to open

• Replace or readjust.

• Pneumatic control system malfunctioning

• Repair or replace.

• Obstructed air line

• Remove obstruction.

• Malfunctioning pneumatic temperature switch

• Replace switch.

• Air leak in actuator

• Repair or replace diaphragm.

• Compressed air pressure is too low

• Adjust pressure.

Condensate in duct

• Foreign matter preventing valve from closing

• Clean or replace valve.

• Humidiﬁer is mounted too close to internal

devices (dampers, turning vanes, etc.) in duct

• Move humidiﬁer tubes to a point further upstream of internal

devices.

• Add more dispersion tubes for shorter non-wetting distance.

Consult DRI-STEEM to determine the total number of tubes
required.

• Non-insulated duct passing through unheated

area (duct surface temperature too low)

• Insulate ductwork.

US-IOM-0108.pdf 25

4/21/2010 11:34:59 AM

Summary of Contents for Ultra-sorb LH

Page 1: ...on Tube Humidifier Panel Installation Operation and Maintenance Manual F o r a p p l i c a t i o n s u s i n g s t e a m f r o m a b o i l e r o r f r o m a n y D R I S T E E M s t e a m g e n e r a t i n g h u m i d i f i e r ...

Page 2: ...ion Selecting the location 10 Determine humidifier placement 11 Installation in a cold air stream 12 Mounting in a horizontal duct 13 Mounting in a vertical duct 14 Installation inside an air handling unit 15 Supply and drain connections and dimensions 16 Piping 17 Mounting 19 Retrofitting an existing Ultra sorb 20 Performance data 22 Maintenance Maintenance 23 Troubleshooting guide 24 Replacement...

Page 3: ...s across or under anything that could compress or damage the insulating material Compressed insulating material has a reduced R value Avoid bumping or snagging the PVDF insulating material Although PVDF is robust rough handling can cause tears which could negatively impact performance Before start up remove the clear poly film by tearing it along the perforation Do not use a knife or sharp object ...

Page 4: ...the drain connection Arrange the components on a large flat working surface positioning them as indicated in Figure 4 1 condensate header to the left supply header to the right OM 238 1 Mounting ﬂange Dispersion tube pipe thread coupling DN 20 drain connection Slip coupling without shoulder 20 nut 8 pipe thread coupling DN 20 drain connection Washer 8 20 nut 8 Slip coupling with shoulder Steam inl...

Page 5: ...ings are factory lubricated if well aligned during insertion no further lubrication should be needed Push and twist the tube in until it bottoms out on the internal shoulder of the slip coupling see Figure 5 4 CAUTION Use care to avoid cutting the internal O rings of the slip couplings Dispersion tube Supply header assembly Slip coupling with shoulder OM 238 6 Shoulder O rings OM 239 20 bolts Moun...

Page 6: ...sh and twist the slip couplings onto the condensate header Again care must be taken to avoid cutting the internal O rings Slide the slip couplings on until they bottom out against the stop disc on the condensate header The steam tubelets must be aimed so that they discharge the steam perpendicular to the airstream Rotate the dispersion tubes as needed After tightening the 20 bolts at all 4 corners...

Page 7: ...in connection is to your left and orient the supply header assembly so the steam inlet nipple or tubing is to your right OM 260 1 Slip coupling with shoulder Supply header assembly Steam inlet Tubelet Dispersion tube Mounting ﬂange 20 bolt 8 A A Washer 8 20 nut 8 Slip coupling without shoulder Condensate header assembly pipe thread coupling DN 20 drain connection Mounting ﬂange Condensate drain Ta...

Page 8: ...mbly The slip couplings are factory lubricated if well aligned during insertion no further lubrication should be needed Push and twist the tube in until it bottoms out on the inter nal shoulder of the slip coupling See Figure 8 3 CAUTION Use care to avoid cutting the internal O rings of the slip couplings OM 260 2 OM 260 3 20 bolt Washer and nut Mounting ﬂange Steam inlet Steam inlet Slip coupling...

Page 9: ...couplings onto the condensate header Again care must be taken to avoid cutting the internal O rings Slide the slip couplings on until they bottom out against the stop disc on the condensate header The tubelets must be aimed so that they discharge the steam perpendicular to the airstream Rotate the dispersion tubes as needed After tightening the 20 bolts at all 4 corners the Ultra sorb panel is rea...

Page 10: ...ream B In general place the Ultra sorb panel where the air temperature is capable of absorbing steam being discharged without causing condensation at or after the unit This will normally be downstream of the heating coil or where the air temperature is warmest C Do not place the Ultra sorb panel in an outside air intake unless the air is tempered with a preheat coil D Do not place the Ultra sorb p...

Page 11: ...ations in Figure 11 1 Dispersed steam must be absorbed into the airflow before it comes in contact with duct elbows fans vanes filters or any object that can cause condensation and dripping Placement in an air handling unit Location A is the best choice Installing downstream of heating and cooling coils provides laminar flow through the dispersion unit plus the heated air provides an environment f...

Page 12: ...lvanized drip pan should be installed to prevent accidental spillage See Figure 12 3 Installation above valuable equipment Water piping and humidifiers should not be installed above expensive equipment A leaking water pipe condensation or other accidental water spillage could cause serious damage to the equipment below When such an installation cannot be avoided install a galvanized drip pan under...

Page 13: ...x self drilling and tapping screw spacing not to exceed 12 305 mm If an angle iron frame is provided on the duct section a longer screw may be required Note To avoid puncturing the header screw penetration into the header enclosure should not exceed 20 mm Header support gasket secures header within enclosure Header enclosure 1 38 mm Mounting ﬂange 1 38 mm Mounting ﬂange Mounting ﬂanges of duct are...

Page 14: ...Ultra sorb flanges The recommended fastener is a 12 x self drilling and tapping screw spacing not to exceed 12 305 mm If an angle iron frame is provided on the duct section a longer screw may be required Note To avoid puncturing the header screw penetration into the header enclosure should not exceed 20 mm Air ﬂow Condensate drain in dispersion tubes Air ﬂow Condensate drain in header Steam inlet ...

Page 15: ...6 150 mm On larger Ultra sorb installations vertical channels may be required on both the inlet and outlet ends of the humidifier to provide proper support See Figure 15 2 Air ﬂow Mounting channel Typ Blank off plate Side blank off Steam supply header Additional mounting support channels required on larger Ultra sorb units Air handler casing Supply header Ultra sorb overall width Steam supply AHU ...

Page 16: ...No Alternate method Drop 12 Drip 4 No Inverted bucket trap No No No No Stainless steel thermostatic trap No No No No Condensate to open drain Yes Yes Yes Yes Condensate return by condensate pump Yes Yes stainless steel pump recommended Yes Yes stainless steel pump recommended Condensate return to humidiﬁer by gravity Yes Yes NA NA Condensate return to boiler via return line NA NA No No Provide 18 ...

Page 17: ...7 1 Ultra sorb strainer Install strainer same size as valve and within 3 1 m of Ultra sorb Valve Table 17 2 O D of pipe and tubing Nom Dia Standard pipe Tubing copper Tubing SST I D of hose 1 30 mm 1 660 1 375 1 38 mm 1 900 1 625 1 500 1 50 2 50 mm 2 375 2 125 2 000 2 00 2 65 mm 2 875 2 625 3 000 3 00 Note Pipe thread and ﬂange tubing adapters are available from DRI STEEM From steam source Table 1...

Page 18: ...between the Ultra sorb and the vaporizing humidifier exceeds 20 feet 6 m consult the factory for special recommendations Thin wall tubing will heat up with less start up heat loss than heavy wall pipe Insulating the tubing or piping will reduce the loss in output caused by condensation in the tubing or piping Condensate Drainage Since Ultra sorb panels operate with virtually zero internal pressure...

Page 19: ...k Before start up verify that all steam discharge tubelets are pointed perpendicular to the airstream see Figure 19 2 The slip couplings provide easy rotation of the dispersion tubes for proper tubelet orientation When removing and installing slip couplings verify that the O rings are seated in their grooves and lubricated When sliding the dispersion tube into the slip coupling be careful not to c...

Page 20: ...pling off the supply header Before retrofitting an existing Ultra sorb panel with high efficiency tubes shut off steam to the system and let all hot surfaces cool See the Warning below Note Replacement slip couplings with internal O rings are shipped with retrofit high efficiency tube orders There are two types of slip couplings with shoulders and without Slip couplings with shoulders must go on t...

Page 21: ...d 1 Slide the new slip couplings onto the high efficiency dispersion tube as shown 2 Push and twist the dispersion tube onto the supply header until the slip coupling shoulder bottoms out Connect the dispersion tube to the condensate header with the other slip coupling 3 Push the shoulderless slip coupling against the stop disc on the condensate header 4 Rotate the dispersion tube to point the tub...

Page 22: ...result in nonuniform mixing of steam with air which may adversely affect the absorption distance 5 A small but measureable amount of duct air pressure loss will be present downstream from the Ultra sorb panel depending on air velocity tube spacing and whether the tubes are insulated See the pressure loss table at left NON WETTING DISTANCE IN INCHES 3 6 9 12 Figure 22 1 Ultra sorb non wetting dista...

Page 23: ...ct annually to verify proper functioning with steam tight shut off O Rings slip couplings Inspect after two or three years of service replace if necessary High efﬁciency tubes If the insulating material gets torn repair the tear with our Insulating Material Repair Kit before dispersing steam or moving air through the air handler to prevent further damage This available kit uses tested and proven P...

Page 24: ...ting of valve spring replace actuator or valve spring with one that is compatible with the higher steam pressure Valve installed backwards re install Adjust valve linkage Electric control system malfunctioning Calibrate or replace Faulty or inaccurately placed humidity controller Replace controller or relocate per catalog recommendations Poor location of control components Relocate per catalog rec...

Page 25: ... Change transformer Incorrect control circuit voltage Replace component s to make all components compatible Incorrect control signal Replace components Improper wiring Rewire Incorrect humidity sensor Replace sensor Humidity controller out of calibration or malfunctioning Repair or replace Malfunctioning humidiﬁer temperature switch not allowing humidiﬁer valve to open Replace or readjust Pneumati...

Page 26: ...ling without shoulder 1 38 mm 162727 001 5 O rings 300400 006 6 Supply header LH Consult factory 7 Return header LH Consult factory 8 Supply header LV Consult factory 9 Return header LV Consult factory 10 1 Drain tube LV Consult factory 12 Steam trap Consult factory 13 Hose cuff Consult factory 14 Hose clamp Consult factory 15 Steam valve Consult factory 16 Strainer Consult factory 17 Steam connec...

Page 27: ...ce Manual Page 27 OM 207 OM 206 Figure 27 1 Ultra sorb Model LV Figure 27 2 Ultra sorb Model LH Replacement par t s Figure 27 3 Header evaporative humidifier 22 4 5 2 1 3 18 5 22 15 16 6 7 20 19 20 19 22 22 12 18 12 22 5 2 1 3 18 16 22 15 9 18 20 19 20 22 22 10 8 12 4 5 21 17 13 14 ...

Page 28: ...dealing or of performance custom or usage of trade DRI STEEM SHALL NOT UNDER ANY CIRCUMSTANCES BE LIABLE FOR ANY DIRECT INDIRECT INCIDENTAL SPECIAL OR CONSEQUENTIAL DAMAGES INCLUDING BUT NOT LIMITED TO LOSS OF PROFITS REVENUE OR BUSINESS OR DAMAGE OR INJURY TO PERSONS OR PROPERTY IN ANY WAY RELATED TO THE MANUFACTURE OR THE USE OF ITS PRODUCTS The exclusion applies regardless of whether such damag...

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