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Fig. 1 

INSTALLATION 

 
1.  Steam supply piping should be pitched two inches (2”) per foot, 
 

back to the humidifier. 

2.  Install tube with orifices injecting steam up. 
3. All drain piping is done by others. 

Form No: IFPC  4/15 

Secure to AHU/duct
casing with 3/8-16

UNC bolts

"H"

water

seal

"H"

water

seal

AHU/duct width

AHU/duct height

Typical PURE

Humidifier Co.

humidifier

Flexible steam 

supply line

(or hard piped

by others in field)

Open sanitary

drain

Duct plate

"SX"/ "GX" Water Seal Height

The water seal height may have to be increased

"ES"/ "EC" Water Seal Height

if excessive duct static pressure exists.

11" (28 cm)

8" (20 cm)

17" (43 cm)
19" (48 cm)

58.5 thru 102

Total KW

22 thru 33

3 thru 19.5

39 thru 49.5

151 and above

100 to 150 (68.0)

Total lbs./hr (kg/hr)

Up to 60 (27.2)
61 to 99 (44.9)

"H"

19" (48 cm)

11" (28 cm)
17" (43 cm)

8" (20 cm)

"H"

3/4" SW drain piping

(by others)

Open sanitary

drain

Secure to

AHU/duct

casing with

3/8-16

UNC bolts

Flex connectors

(by PURE)

Stainless steel

tube header

(by PURE)

 Typ. centers

Injection tube

AHU/duct casing

READ AND SAVE THESE INSTRUCTIONS 

 

CUFFED FAST-PAC  

INTERNAL MOUNT 

MULTIPLE TUBE ASSEMBLY 

 

INSTALLATION 

AND 

ASSEMBLY INSTRUCTIONS 

TM 

PURE HUMIDIFIER

® 

is a registered trademark of PURE Humidifier Co. 

Summary of Contents for Fast-Pac

Page 1: ...have to be increased ES EC Water Seal Height if excessive duct static pressure exists 11 28 cm 8 20 cm 17 43 cm 19 48 cm 58 5 thru 102 Total KW 22 thru 33 3 thru 19 5 39 thru 49 5 151 and above 100 t...

Page 2: ...iameter Duct plates are provided to seal the opening The layout should be based on the Location instructions listed above see Fig 3 2 Cut a hole through the AHU or duct wall for the supply connection...

Page 3: ...rt bracket 1 6 Tube mounting bolts 1 per tube 7 Duct plate condensate 1 ITEM NO DESCRIPTION QUANTITY Header drain connection 3 4 NPT Fig 2 4 1 Header mounting bracket welded onto the header 7 Steam in...

Page 4: ...on tubes with the orifices injecting upwards 4 All condensate drain piping is by others Header Support Bracket Mounting Detail Fig 3 Condensate drain connection dashed line is the alternate location s...

Page 5: ...locity of 300 feet per minute is required to avoid saturation and excessive fog travel Controls Fan Interlock Switch PURE Humidifier Co recommends the use of an air flow proving switch or fan interloc...

Page 6: ...Little Humidity 1 Humidity controller out of calibration 2 Undersized humidifier 3 Check humidifier GX SX ES EC for proper operation 4 Water seals are not primed 5 Water seals are blown due to imprope...

Page 7: ...h reservoir outlet size Do not use supply piping with a smaller inside diameter than the reservoir outlet 6 Failure to follow the piping recommendation on this page may result in blown water seals lea...

Page 8: ...oducts The Seller reserves the right to make reasonable changes in products specifications and performance of any kind without notice or liability The Seller also reserves the right to deliver revised...

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