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ULTRA-SORB MP INSTALLATION, OPERATION, AND MAINTENANCE MANUAL

INSTALLATION

Airflow

Filter

Heating coil

Cooling coil

Duct

high limit

humidity

control

Airflow

proving

switch

Fan

DC-1081_2020

Air handling unit:

FIGURE 9-1: PLACING A DISPERSION ASSEMBLY IN AN AIR HANDLING UNIT

A

B

AIRFLOW PROVING SWITCH

Ensure placement is representative of air to dispersion device. Sail switch
recommended for variable air volume applications. Pressure switch
recommended for constant volume applications.

DUCT HIGH LIMIT

Place high limit as far downstream as possible but before a duct transition to
prevent wetting again duct walls or other components within the airstream.
General recommendation is 8'-12' (2.4 to 3.7 m) downstream.

PLACEMENT IN AN AIR HANDLING UNIT

• Location A is the best choice. Installing downstream from heating and

cooling coils provides laminar flow through the dispersion unit; plus, the

heated air provides an environment for best absorption.

• Location B is the second-best choice. However, conditions when both

cooling and humidification is needed, the cooling coil will eliminate some

moisture for humidification.

• Calculated absorption distances assume even airflow across entire

dispersion device.

Placement in an air handling unit

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Summary of Contents for MP

Page 1: ...Model MP Steam Dispersion Panels Installation Operation and Maintenance Manual Read and save these instructions ULTRA SORB MODEL MP DISPERSION PANELS ...

Page 2: ...lacement in an air handling unit 9 Mounting and support 10 Horizontal duct 11 Placement in a duct 11 Mounting and support 12 Installation in a cold air stream 12 Placement upstream from an elbow or duct split 12 Installation above valuable equipment 12 Panel support 12 Mounting in a horizontal duct 13 Pressurized steam application 15 Placement in a steam application 15 Piping from a pressurized st...

Page 3: ... sharp object to remove the poly film High efficiency tube option Dispersion assemblies with the High Efficiency Tube option are designed to produce significantly less dispersion generated condensate and airstream heat gain which reduces wasted energy by up to 85 CAUTION Remove clear poly film do not remove white PVDF insulation High efficiency tubes are sleeved in clear poly film for protection d...

Page 4: ...ating pins on the flanges and top frame and insert screws TIGHTEN THE FLANGE LOCKNUTS Torque the eight flange locknuts to 16 ft lb 22 N m at 100 rpm maximum using a 7 16 deep well socket INSTALL THE DISPERSION TUBES Note Do not remove the poly film from the dispersion tubes until after the panel is installed Table 2 1 Ultra sorb Model MP components Component Qty Header assembly 1 Dispersion tubes ...

Page 5: ...t a slight angle to not interfere with top frame of Ultra sorb panel 2 Press downward on tube so to clear stud at top of tube Align tube with rivet nut on top of the header 3 Once aligned turn the tube three full rotations into rivet nut for proper engagement 4 Turn the tube backwards so that the steam tubelets face the next tube perpendicular to air flow Face the lowest tubelet of each tube in th...

Page 6: ...ltra sorb Model MP tube capacity Tubes lbs hr kg hr 1 5 Uninsulated 40 18 1 Insulated 43 19 5 2 0 Uninsulated 77 34 9 Insulated 80 36 3 If face height B is 17 432 mm consult DriSteem or see DriCalc for the correct calculation Table 4 1 Ultra sorb Model MP unit capacity Evaporative steam Pressurized steam 2 50 psi lbs hr kg hr lbs hr kg hr 700 318 2720 1235 All except with 4 NPT steam inlet 4 NPT s...

Page 7: ...ion steam inlet 1 or 2 NPT coupling for pressurized steam 1 or 2 NPT coupling for evaporative steam 3 or 4 flange for evaporative steam DN25 or DN50 BSPT nipple for pressurized steam DN50 DN80 or DN100 BSPT nipple for evaporative steam 1 or 2 DN40 or DN50 hose for evaporative steam H Drain port internal thread NPT DN20 coupling J Overall width 1 NPT coupling dimension A 1 8 1 NPT coupling dimensio...

Page 8: ...talled with the drain connection at an elevation that permits gravity drainage For lifting condensate use a condensate pump rated for your application Contact your local DriSteem representative for pump selection Ultra sorb condensate outlet 3 4 20 mm minimum copper Table 6 1 Condensate piping for Ultra sorb MP steam dispersion panel Evaporative steam Pressurized steam P trap water seal Figure 6 1...

Page 9: ...ersion tube OM 7842 Orifice tubelet Hose Flange Coupling OM 607 1a OM 607 1b OM 607 2 Connections and dispersion tube detail Airflow DN20 threaded condensate drain outlet FIGURE 7 3 ULTRA SORB MODEL MP STEAM INLET TYPES FIGURE 7 4 INSULATED TUBE DETAIL HIGH EFFICIENCY TUBE OPTION Grommet FIGURE 7 1 ULTRA SORB MODEL MP STEAM INLET AND CONDENSATE OUTLET POSITIONS FIGURE 7 2 DISPERSION TUBE DETAIL Ni...

Page 10: ...ot place the Ultra sorb panel in an outside air intake unless the air is tempered with a preheat coil Do not place the Ultra sorb panel near the entrance of a high efficiency filter The filter will remove visible moisture and become waterlogged See the Caution Installing the Ultra sorb panel upstream from filter media on page 21 Do not place the Ultra sorb panel where discharged visible mist will ...

Page 11: ...limit as far downstream as possible but before a duct transition to prevent wetting again duct walls or other components within the airstream General recommendation is 8 12 2 4 to 3 7 m downstream PLACEMENT IN AN AIR HANDLING UNIT Location A is the best choice Installing downstream from heating and cooling coils provides laminar flow through the dispersion unit plus the heated air provides an envi...

Page 12: ...ay be required on both the inlet and outlet ends of the humidifier to provide proper support See Figure 10 2 Air flow Mounting channel Typ Blank off plate Side blank off Additional mounting support channels required on larger Ultra sorb units Air handler casing Ultra sorb overall width Steam supply AHU casing Dispersion tube Mounting channel Typ Floor drain Header Blanked off area 1 25 mm air gap ...

Page 13: ...s far downstream as possible but before a duct transition to prevent wetting again duct walls or other components within the airstream General recommendation is 8 12 2 4 to 3 7 m downstream PLACEMENT IN A DUCT Location C is the best choice Air leaving a fan is usually very turbulent and can cause vapor to not absorb at the expected non wetting distance Allow for more distance if installing downstr...

Page 14: ...tream from elbows or duct splits can be done See Figure 12 2 if placed upstream a minimum of the non wetting distance Ensure adequate absorption prior to a duct transition to prevent potential wetting of duct surfaces Place transition at least the non wetting distance downstream but may be longer INSTALLATION ABOVE VALUABLE EQUIPMENT Water piping and humidifiers should not be installed above expen...

Page 15: ...exceed 12 305 mm If an angle iron frame is provided on the duct section a longer screw may be required Ultra sorb Mating flanges of duct are attached to header enclosures Header enclosure 1 38 mm Mounting flange Mating flanges of duct are attached to header enclosures OM 7864 OM 7863 Side view FIGURE 13 1 ULTRA SORB MODEL MP IN DUCT FIGURE 13 2 ULTRA SORB MODEL MP 1 38 mm Mounting flange Do not pu...

Page 16: ...ientation When removing and installing the dispersion tubes verify that the replacement grommets are seated in their grooves and lubricated When sliding the dispersion tube into the grommet be careful not to cut the grommet Note To prevent leakage use HVAC caulking compressible strip or a similar weather sealant to the dispersion panel joints and duct flanges Seal all places where the Ultra sorb i...

Page 17: ...p across the valve the steam pressure at the header traps is minimal Condensate must be drained 10 Dispersion tubes are available at 3 76 mm 4 102 mm for 2 diameter only 6 152 mm 9 228 mm 12 305 mm centers 11 Ultra sorb humidifiers will be assembled crated and shipped intact in all sizes up to 93 2360 mm unit height Ultra sorb can be shipped unassembled by request requiring field assembly 12 Sizes...

Page 18: ...ication STEAM FROM A PRESSURIZED STEAM Ultra sorb panels for pressurized steam have a threaded pipe nipple that extends outside the framework for a steam supply connection The steam supply line should be dripped immediately ahead of the steam valve through a steam trap See Figure 6 3 RECOMMENDED TRAP FOR STEAM MAIN DRIP LEG Use a float and thermostatic F T trap on the steam supply if 15 psi and no...

Page 19: ...rrounding it must be sealed The blanked off area below the Ultra sorb provides clearance height for water seals and condensate piping connections 6 Condensate must be drained 7 Dispersion tubes are available at 3 76 mm 4 102 mm for 2 diameter only 6 152 mm 9 228 mm 12 305 mm centers 8 Ultra sorb humidifiers will be assembled crated and shipped intact in all sizes up to 93 2360 mm unit height Ultra...

Page 20: ...ier using same 2 ft 15 pitch TUBING PITCH Pitch at least 1 8 ft 1 towards Ultra sorb so condensate and steam flow in same direction Alternatively can pitch back to humidifier using at least 1 4 ft 2 if using insulated tubing pipe or 1 2 ft 4 if not insulated tubing pipe 90 elbows are not recommended Use two 45 elbows one foot apart see Figure 18 2 Failure to follow the above recommendations may re...

Page 21: ...For threading pipe connection options see DriSteem s DriCalc sizing and selection software available at www dristeem com Hose and clamps can be used for connections at the steam cylinder and at the Ultra sorb Due to the difference between the tubing O D and the steam hose I D multiple hose clamps may be required STEAM HOSE PITCH Support steam hose to prevent sags or low spots and pitch at least 2 ...

Page 22: ...oped length 4 inches DN lbs hr kg h ft m inches DN lbs hr kg h ft m 1 40 150 68 10 3 1 40 150 68 20 6 2 50 250 113 10 3 2 50 220 100 30 9 1 Use DriSteem steam hose for best results Other hose may have shorter life and may cause foaming in the evaporating chamber resulting in condensate discharge at the dispersion assembly Do not use steam hose for outdoor applications 2 Maximum recommended length ...

Page 23: ...m representative for recommendations NON WETTING DISTANCE Non wetting distance is the distance downstream from the leaving side of the steam dispersion assembly to the point where wetting will not occur This distance is dependent on several application parameters To determine your dispersion assembly s non wetting distance consult your system s design engineer or project documentation Non wetting ...

Page 24: ...GH LIMIT HUMIDISTAT To prevent over saturation when duct air is cooler than 70 F 21 C use a high limit duct mounted humidistat Figure 15 1 Mount it 10 to 15 3 to 4 5 m downstream from the Ultra sorb panel and set it at 80 to 90 RH Controls OPERATION FIGURE 22 1 ULTRA SORB MODEL MP TYPICAL CONTROL WIRING 2 10 VDC REVERSE ACTING SIGNAL FROM BAS OR HUMIDISTAT MODULATING STEAM CONTROL VALVE 2 10 VDC S...

Page 25: ... for leaks 5 Ensure that the dispersion tubes are oriented with the tubelets at a right angle to the airflow See Figure 14 1 6 Check for any other leaks from steam and drain connections 7 Ensure that the P traps are operating At the beginning of the season ensure there is a stream of water from condensate drain when operating 1 If not verify P trap is not blocked 2 If steam is blowing out of the P...

Page 26: ...es off steam tightly and the stem packing is not leaking Pneumatic Inspect annually to be sure the valve closes off steam tightly the stem packing is not leaking steam and the diaphragm in the actuator is not leaking air HIGH EFFICIENCY TUBES If the insulating material gets dirty or smudged gently clean it with a damp cloth and a solution of soapy water or diluted non toxic biodegradable cleaner d...

Page 27: ...mmet to ease turning and removal of the dispersion tube 2 Loosen the jam nut from the tube nut at top of the tube Rotate the tube off the top frame assembly bolt about 4 rotations of the tube 3 Press downward on the tube so to clear bolt at top of frame 4 Move the tube to a slight angle so that it does not interfere with top frame of Ultra sorb Model MP panel 5 Pull the tube out from the rubber gr...

Page 28: ...s compatible with the higher steam pressure Valve installed backwards re install Adjust valve linkage Faulty or inaccurately placed humidity controller Replace controller or relocate per catalog recommendations Poor location of control components Relocate per catalog recommendations Incompatible control components Replace per specified recommendations Automatic valve is hunting Humidifier capacity...

Page 29: ...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 Repa...

Page 30: ...28 ULTRA SORB MP INSTALLATION OPERATION AND MAINTENANCE MANUAL OM 7890 Replacement parts 1 MAINTENANCE FIGURE 28 1 ULTRA SORB MODEL MP REPLACEMENT PARTS 2 3 6 7 5 8 4 OM 7854_rightside 11 10 9 ...

Page 31: ...non insulated dispersion tube Consult factory 2 50 mm high efficiency insulated dispersion tube Consult factory 2 50 mm high efficiency non insulated dispersion tube Consult factory 5 Screw 8 32 x 3 8 PHL PNHD DRV Type F stainless steel SST 191172 015 Screw 8 32 x 3 8 PHL PNHD Type F 191172 020 6 Grommet for 1 38 mm dispersion tube 405895 150 Grommet for 2 50 mm dispersion tube 405895 200 7 Frame ...

Page 32: ...on applies regardless of whether such damages are sought based on breach of warranty breach of contract negligence strict liability in tort or any other legal theory even if DriSteem has notice of the possibility of such damages By purchasing DriSteem s products the purchaser agrees to the terms and conditions of this Limited Warranty Extended warranty The original user may extend the term of the ...

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