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3.4 Ducting

The duct requirements of the 4800E are much more critical 

than those of refrigerant-based dehumidifiers.  

ALL SUPPLY 

AND RETURN AIR DUCTING FOR THE 4800E MUST BE 

AIR AND VAPOR TIGHT.

  This is extremely important for 

proper performance.  Ensure that reactivation discharge air 

does not enter the process or reactivation inlets.  
Using excess duct length significantly reduces air flow volume 

through duct. This is true in any application. If the job at hand 

needs a short length of duct, cut a section to the appropriate 

length. If air flow is restricted by excess length, performance 

will suffer. The same can be said of excess bends in the 

ducting.
Two different duct sizes are used on the 4800E. All ducting 

materials are available from Therma-Stor LLC  

(see accessories list in Section 1).

Process inlet / Reactivation inlet: 18” flex duct.

To attach flex ducts to the process air intake, push the wire 

of the first few loops beyond the 2 holes in the duct collar.  

Push the metal rod through the duct and duct collar piercing 

the duct in two places.  Tape or a hose clamp can be used 

to create an airtight seal.  Alternatively, the duct wire can be 

pushed past the weld beads on the duct collar and the duct 

can be secured with hose clamps or ratcheting straps.  If 

using only one inlet connection, the other can be left closed.

Process outlet: 18” flex or lay flat plastic duct.

To attach flex ducts to the process air outlet, push the wire 

of the first few loops beyond the 2 holes in the duct collar.  

Push the metal rod through the duct and duct collar piercing 

the duct in two places.  Tape or a hose clamp can be used 

to create an airtight seal.  Alternatively, the duct wire can be 

pushed past the weld beads on the duct collar and the duct 

can be secured with hose clamps or ratcheting straps.  
When using 18” lay flat ducting, slip over the outlet collar and 

zip-tie or duct tape in place. 

Reactivation outlet: 10” flex duct.

To attach flex duct to the reactivation air outlet, push the 

wire of the first couple of loops beyond the weld beads on an 

outlet collar. Secure with hose clamp.

3.5 Avoiding Secondary Damage

The Phoenix 4800E is a powerful tool capable of removing 

a great deal of water from most environments. Care must 

be taken to avoid secondary damage of over-drying and or 

unexpected condensation.
The Phoenix 4800E removes vapor water from the 

incoming process air stream and transfers it to the outgoing 

reactivation air stream. The reactivation exhaust air is hot 

and wet.
Take care to prevent the reactivation exhaust air stream from 

causing secondary damage due to condensation.
If the exhaust from reactivation air stream cools below its 

dew point, liquid water will condense inside the duct work 

creating puddles. If the reactivation exhaust air stream is not 

exhausted completely from the structure it can also cause 

secondary water damage.
The Phoenix 4800E does not produce liquid water internal 

to the machine. There is no condensate pump and no drain 

hose.
The 4800E desiccant dehumidifier will continue to remove 

water from already dry, cold air. It is possible to over-dry 

objects and or structures.
Care must be taken to avoid secondary damage due to over-

drying.

3.6 Electrical Requirements

A 480 volt, 3 phase power source is required to operate the 

Phoenix 4800E.

All local and state codes must be strictly adhered to and 

good electrical practices should be followed to achieve the 

best installation possible.  The 4800E must be properly wired 

to an adequate power source.  Serious damage to the motors 

and controls can occur if incorrect voltage is applied.  

(See 

Electrical Schematic

 drawing in the back of this manual 

for internal wiring.)

4 Operating Instructions

Refer to the Operating Instructions label located next to the 

control panel of your 4800E.

User-supplied power cord, cord grip, and branch protection 

appropriate for the electrical load must be supplied. See 

device for FLA rating.

The Phoenix 4800E dehumidifier comes complete and ready 

for operation.  All that is required is to provide the proper 

power source and duct connections (described above).

4.1 

Connect and Start-Up Procedure

1)  Lockout Power Source.
2)  Wire unit 480 Volt 3 Phase.
3)  Verify Selector Switch is set to STANDBY.
4)  Engage Power Source and turn Main Disconnect to ON.
5)  Verify PHASE OUT light is off, if not, re-wire power  

 

source to correct phase order.

6)  COOL DOWN light will come on for 5 minutes.
7)  Set Selector Switch to RUN.
8)  Set process damper to obtain a maximum of 1.5”  

 

water column pressure as read on pressure gauge.

Summary of Contents for 4800 E

Page 1: ...at the installation operation and maintenance can proceed successfully Ultimate satisfaction depends on the quality of the installation and thorough understanding of the operation of this equipment The dehumidifier is built around tested engineering principles and has passed a thorough inspection for quality of workmanship and function 3032 pints day AHAM 4800 CFM process airflow Dries in temperat...

Page 2: ...y before using this unit Proper adherence to these instructions is essential to obtain maximum benefit from your Phoenix 4800E 1 Specifications Specifications for 4800E Part No 4028003 with Frame Part No 4029191 without Frame Power 480 VAC 3 Phase 106 FLA Water 3032 pints day AHAM Removal Blower 4800 CFM Process Air Flow 2000 CFM Reactivation Air Flow Operating 10ºF to 140ºF Range Filters Process ...

Page 3: ... maximize service life and performance 3 1 Inspection Thoroughly inspect the machine to insure no damage has occurred during shipping or on the job site 3 2 Location Note the following precautions when locating the Phoenix 4800E The 4800E is designed to be used indoors or outdoors If the humid area is very large dehumidification can be improved by adding an outlet duct to circulate process air to ...

Page 4: ...E is a powerful tool capable of removing a great deal of water from most environments Care must be taken to avoid secondary damage of over drying and or unexpected condensation The Phoenix 4800E removes vapor water from the incoming process air stream and transfers it to the outgoing reactivation air stream The reactivation exhaust air is hot and wet Take care to prevent the reactivation exhaust a...

Page 5: ... terminals 3040 and 3042 The external control must be designed to operate a 115 VAC circuit 5 5 Alarm Light and Horn The alarm indicator lamp illuminates and horn sounds to indicate that a fault condition exists The fault conditions could be Motor Overload process or reactivation Reactivation Temperature greater than 375 F No dehumidification i e saturated wheel Low reactivation airflow Stuck heat...

Page 6: ...lly the seals will not require service or replacement However should damage occur or if poor performance as the result of an air leak is suspected the following inspection must be performed to determine whether the seals should be replaced Inspection 1 Turn the unit off and remove the access covers 2 Visually inspect for gaps between the desiccant media and the seals 3 If significant gaps wear or ...

Page 7: ...7 www UsePhoenix com sales UsePhoenix com Toll Free 1 800 533 7533 7 Panel Layout Wiring Diagram ...

Page 8: ... L1 L2 L3 3L1 3L2 3L3 8 AWG PER PHASE TYPE MTW 3CB 90 DEG C COPPER 40A 24 KW 28 9FLA HEATER C HCR 8 AWG PER PHASE TYPE MTW 90 DEG C COPPER 4T2 4T3 4T1 FIELD DETERMINE L1 L2 L3 4L1 4L2 4L3 PMS 14 AWG PER PHASE TYPE MTW OLR P 90 DEG C COPPER 7 5HP 3600 RPM PROCESS MOTOR PMS 14 AWG PER PHASE TYPE MTW 90 DEG C COPPER 10 9FLA 5T2 5T3 5T1 FIELD DETERMINE L1 L2 L3 5L1 5L2 5L3 RMS 14 AWG PER PHASE TYPE MT...

Page 9: ...9 www UsePhoenix com sales UsePhoenix com Toll Free 1 800 533 7533 7 Panel Layout Wiring Diagram ...

Page 10: ...xcessive infiltration of humid air into the controlled area 4 Area not vapor tight Seal with paint or vapor barrier 1 Dehumidistat needs adjustment Re adjust 2 Improper settings Re adjust Faulty humidity controls 3 Defective Replace 1 Dirty filter Clean or replace 2 Obstruction at inlet outlet or ducting Remove obstruction Inadequate air flow 3 Clogged desiccant media high pressure differential ac...

Page 11: ...lay AR a ALARM lamp illuminates b Alarm horn sounds c Terminals 3080 and X2 energize These terminals can be utilized for an external alarm 1 amp maximum d Time relay TR1 starts the 5 minute heater cool down cycle Following the delay I TR1 relay energizes opening contacts for the COOL DOWN light and reactivation blower motor starter RMS Rotor motor terminals 3470 and X2 de energize Reset alarm by t...

Page 12: ... 1 4027228 1 Blower Reactivation 460V 5HP 2 4027229 1 Blower Process 460V 7 5HP 3 4028630 1 Probe Thermocouple Type J 12 4 4028633 3 Heating Element 24KW 5 4020175 1 Dehumidistat 6 4028771 1 Temperature Controller with Control Output Board Relay SPST 7 4032306 1 Control Box 8 4030198 2 Fusa 2A 9 4030199 1 Fuse 4A ...

Page 13: ...er repair or installation accident acts of nature or any other cause beyond Therma Stor Products reasonable control Limitations and Exclusions If any 4800 part is repaired or replaced the new part shall be warranted for only the remainder of the original warranty period applicable thereto but all warranty periods will be extended by the period of time if any that the 4800 is out of service while a...

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