Nortec Humidifier ASD User Manual

STEAM  
DISTRIBUTORS  
ASD / BSD / CSD  
Steam Distribution  
Installation Manual  
IMPORTANT: Read and save this guide for future  
reference. This guide to be left with equipment owner.  
1506117-B  
 
Chart #1  
Steam Line Material  
INSTALLATION  
RECEIVING & UNPACKING EQUIPMENT  
Steam  
Hose  
Copper Tube Stainless  
Steel Tube  
1.  
2.  
Check packing slip to ensure ALL material  
has been delivered.  
Short run  
< 10 feet  
(3 m)  
ü
ü
ü
ü
ü
ü
All material shortages are to be reported to  
Walter Meier (NORTEC) within 48 hours  
from receipt of goods. Walter Meier  
(NORTEC) assumes no responsibility for  
any material shortages beyond this period.  
Long run  
> 10 feet  
(3m)  
DI / RO  
water  
3.  
4.  
Inspect shipping boxes for damage and  
note on shipping waybill accordingly.  
After unpacking, inspect equipment for  
damage and if damage is found, notify the  
shipper promptly.  
4.  
5.  
Consult the following pages for step by step  
distributor installation starting with Figure  
#1.  
5.  
6.  
All NORTEC products are shipped on an  
F.O.B. factory basis. Any and all damage,  
breakage or loss claims are to be made  
directly to the shipping company.  
Consult the charts below for steam and  
condensate sizing guidelines when using  
steam distributors.  
Chart #2  
Recommended material and size for steam run  
Each distributor is provided with: installation  
manual, one hose cuff, and two hose  
clamps.  
Load  
Steam Run  
Steam  
Line  
Steam Line  
Description  
PRE-INSTALLATION CHECK  
Material  
lb/hr kg/hr  
ft  
m
1.  
Ensure the total capacity of the humidifier is  
not higher than the allowable maximum  
steam capacity of the distributors used.  
ASD 10: 22 lbs/hr (8 kg/hr)  
Copper 3/4" MED-L Tubing  
tube (7/8" O.D.)  
Copper 1” MED-L Tubing  
0-30  
0-30  
0-30  
0-30  
0-13 0-10 0-3  
0-13 10 + 3 +  
0-13 0-10 0-3  
0-13 10 + 3 +  
ASD: 25 lbs/hr (9 kg/hr)  
BSD: 35 lbs/hr (13 kg/hr)  
CSD: 115 lbs/hr (45 kg/hr)  
tube  
(1 1/8" O.D.)  
7/8” tube x  
Stainless  
Steel tube  
0.049” thick.  
Stainless 1 1/8” tube x 0.049”  
Steel tube thick.  
STEAM LINE INSTALLATION  
Copper 1 ½” MED-L Tubing  
tube (1 5/8" O.D.)  
30-100 13-45 0-20 0-6  
GUIDELINES  
Copper 2” MED-L Tubing  
1.  
2.  
Nortec steam hose should only be used on  
short steam runs below 10 feet.  
30-100 13-45 20 + 6 +  
30-100 13-45 0-20 0-6  
30-100 13-45 20 + 6 +  
tube  
(2 1/8" O.D.)  
1 ¾” tube x  
0.065” thick.  
2” tube x  
Stainless  
Steel tube  
Stainless  
Steel tube  
Ensure that no condensate produced in the  
steam line will remain trapped. Steam  
naturally flows upward and condensate  
naturally flows downward.  
0.065” thick.  
Please note that options shown in a bold-italic font requires  
that reducers be used at both ends. These extra large sizes are to  
allow for better condensation removal in long steam runs. These  
sizes will not permit you to use hose coupling to connect your  
self to either humidifier or distributors.  
3.  
See material recommended for use in the  
chart below. To eliminate the metal  
corrosion, Nortec does not recommend the  
use of steel piping.  
- 1 -  
 
 
Chart #3  
Recommended Condensate line at distributor(s)  
6.  
7.  
8.  
Vertical drop of the drip station should be  
1.5 times the diameter of the steam main  
but no less then 12”.  
Dispersion  
Method  
Condensate  
Hose  
Stainless Steel  
tube  
Copper tube  
At the bottom of this drip station is where  
the “p-trap” is installed. It is to be 2” larger  
then the duct static duct pressure.  
1/4" MED-L  
Tubing  
1 x Steam  
distributor  
3/8" Nortec  
1328840  
3/8” tube  
0.049” thick.  
(3/8" O.D.)  
1/2" MED-L  
Tubing  
All distributors must be individually trapped.  
3 x Steam  
3/8" Nortec  
1328840  
5/8” tube  
Distributor*  
0.049" thick  
(7/8" O.D.)  
*When using more than one distributor, the condensate line  
should be trapped before joined together.  
CONDENSATE RETURN GUIDELINES FOR  
MAIN STEAM LINES  
1.  
2.  
Use vertical condensate leg of distributor  
only. Do not over-tighten clamp.  
Drip stations on steam mains must be  
located at all low points in the system, at  
each elevation change and or directional  
change.  
3.  
Horizontal runs of steam must have a 2”  
rise per foot (10º) when flow is going  
upwards from drip station and the steam  
run is to fall ½” per foot (2º) when flow is  
going downwards to drip station.  
4.  
5.  
In a horizontal run of the steam main, drip  
stations must be located at regular intervals  
of 20 feet.  
The drip station itself is a section of piping  
connected to the bottom of the main. A full  
size tee must be used to create a drip  
station to allow the condensate to fall in the  
drip station.  
Figure #1  
Drain Tee  
Full Size  
Drain Tee  
- 2 -  
 
 
Figure #2  
Distributor Mounting  
A
VERTICAL FLOW  
HORIZONTAL FLOW  
min. 2º  
min. 10º  
min. 2º  
min. 10º  
min. 10º  
min. 10º  
Use vertical  
condensate leg  
only.  
Use vertical  
condensate leg  
only.  
Nortec  
Humidifier  
Nortec  
Humidifier  
To be 2” (50mm) longer  
then duct static pressure  
or minimum.  
NHB, NHP, NHMC,  
RESDELUX ONLY  
NHB, NHP, NHMC,  
RESDELUX ONLY  
GO TO  
GO TO  
C1  
B
min. 2º  
min. 10º  
min. 2º  
min. 10º  
min. 10º  
min. 10º  
Nortec  
Humidifiers  
All Models  
Nortec  
Humidifiers  
All Models  
Use vertical  
condensate leg  
only.  
Use vertical  
condensate leg  
only.  
To be 2” (50mm) longer  
then duct static pressure  
or minimum.  
min. 2º  
min. 10º  
min. 2º  
min. 10º  
min. 20 %  
min. 10º  
Nortec Humidifiers  
All Models  
Nortec Humidifiers  
All Models  
min.  
100  
%
Use vertical  
condensate leg  
only.  
Use vertical  
condensate leg  
only.  
min. 20 %  
GO TO  
GO TO  
C1  
B
For long steam runs, condensate trap with full size tee, must  
be used every 20 feet to eliminate condensate. Follow same  
rules as above for trap height.  
- 3 -  
 
Figure #3  
Vertical Airflow  
B
Always align distributor holes so that steam is discharged  
upwards to ensure condensate will remain in the distributor.  
1
1x  
2
+ 45º  
- 45º  
3
GO TO  
C2  
- 4 -  
 
Figure #4  
Horizontal Airflow  
C1  
Always align distributor holes so that steam is discharged  
upwards to ensure condensate will remain in the distributor.  
Template provided  
by Nortec in box.  
81-...  
41-... 61-...  
X Min.  
H Min.  
ASD  
BSD  
CSD  
3” (76mm)  
8” (203mm)  
4” (102mm) 10” (254 mm)  
5” (127mm) 14” (356mm)  
ASD  
BSD  
CSD  
ø 1.7" (43 mm)  
ø 1.7" (43 mm)  
ø 2.4" (61 mm)  
H
X
2/3H  
1/3H  
H
2/5H  
H
2/5H  
1/5H  
5”m in.  
A
A
B
ASD: 5” 3”  
BSD: 6” 4”  
CSD: 9” 5”  
A
B
GO TO  
D
- 5 -  
 
Figure #5  
Vertical Airflow  
C2  
Always align distributor holes so that steam is discharged  
upwards to ensure condensate will remain in the distributor.  
H
W
1/3W  
2/3W  
1/3W  
1/3W  
1/3W  
Min. W = 8” (203 mm)  
GO TO  
D
WARNING:  
·
·
·
These installation guidelines apply for duct velocities under 2000 ft/min (610 m/min), please consult factory  
for higher velocities.  
Please make sure no obstacles (elbow, filter, or diffuser) are located after the distributor in the direction of the  
airflow closer than the absorption distance calculated for your application.  
Unless you know the exact absorption distance required for the steam absorption into the air stream, the  
distributor should be located at least 8-10 ft (2-3 m) away from any obstacle it may condense on (elbow,  
diffuser, filter, etc.).  
- 6 -  
 
Figure #6  
Distributor Mounting - Horizontal & Vertical Flow  
D
#10 Sc rew  
Use self tapping sc rews.  
GO TO  
E
Figure #7  
Distributor Mounting  
E
5/16” unc  
Mount  
Level  
5/16”  
Mandatory for Distributors longer than 36” (915mm).  
Support Bracket  
by Others  
- 7 -  
 
- 8 -  
 
LIMITED WARRANTY  
Walter Meier Inc. and/or Walter Meier Ltd. (hereinafter collectively referred to as  
THE COMPANY), warrant for a period of one year from date of shipment, that THE  
COMPANY’s manufactured and assembled products, not otherwise expressly  
warranted, are free from defects in material and workmanship. No warranty is made  
against corrosion, deterioration, or suitability of substituted materials used as a result of  
compliance with government regulations.  
THE COMPANY’s obligations and liabilities under this warranty are limited to  
furnishing replacement parts to the customer, F.O.B. THE COMPANY’s factory,  
providing the defective part(s) is returned freight prepaid by the customer. Parts used  
for repairs are warranted for the balance of the term of the warranty on the original  
humidifier or 90 days, whichever is longer.  
The warranties set forth herein are in lieu of all other warranties expressed or  
implied by law. No liability whatsoever shall be attached to THE COMPANY until said  
products have been paid for in full and then said liability shall be limited to the original  
purchase price for the product. Any further warranty must be in writing, signed by an  
officer of THE COMPANY.  
THE COMPANY’s limited warranty on accessories, not of Walter Meier’s  
manufacture, such as controls, humidistats, pumps, etc. is limited to the warranty of the  
original equipment manufacturer from date of original shipment of humidifier.  
THE COMPANY makes no warranty and assumes no liability unless the equipment  
is installed in strict accordance with a copy of the catalog and installation manual in  
effect at the date of purchase and by a contractor approved by THE COMPANY to  
install such equipment.  
THE COMPANY makes no warranty and assumes no liability whatsoever for  
consequential damage or damage resulting directly from misapplication, incorrect sizing  
or lack of proper maintenance of the equipment.  
THE COMPANY retains the right to change the design, specification and  
performance criteria of its products without notice or obligation.  
 
Walter Meier (Climate USA) Inc.  
826 Proctor Avenue, Ogdensburg, New York 13669  
Walter Meier (Climate Canada) Ltd.  
2740 Fenton Road, Ottawa, Ontario K1T3T7  
Tel: 866 NORTEC 1 Fax: 613 822 7964  
 

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