Nortec Steam Distribution User Manual

Important: Read and save these instructions. This guide to be left with equipment owner.

1506117-C| 22 AUG 2014

Steam
Distribution

Installation Manual

Includes installation instructions for
steam distributions ASD/BSD/CSD.

INSTALLATION DATE (MM/DD/YYYY)

MODEL #

SERIAL #

CYLINDER #

INSTALLATION DATE (MM/DD/YYYY)

MODEL #

SERIAL #

CYLINDER #

Thank you for choosing Nortec.

Proprietary Notice

This document and the information disclosed herein are proprietary data of Nortec Humidity Ltd. Neither this
document nor the information contained herein shall be reproduced, used, or disclosed to others without the
written authorization of Nortec Humidity Ltd., except to the extent required for installation or maintenance of
recipient’s equipment.

Liability Notice

Nortec does not accept any liability for installations of humidity equipment installed by unqualified personnel or
the use of parts/components/equipment that are not authorized or approved by Nortec.

Copyright Notice

Copyright 2014, Nortec Humidity Ltd. All rights reserved.

Contents

2 Installation

2 Receiving and Unpacking

2 Pre-Installation

2 Steam Line Installation

3 Condensate Return Guidelines for Main

Steam Lines

4 Distributor Mounting

10 Spare Parts

11 Warranty

Installation

Receiving and Unpacking Equipment

 Check packing slip to ensure ALL material has been delivered.
 All material shortages are to be reported to Nortec within 48 hours from receipt of goods. Nortec

assumes no responsibility for any material shortages beyond this point.

 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.

 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.

 Each distributor is provided with: installation manual, one hose cuff, and two hose clamps.

Pre-Installation Check

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)
ASD: 25 lbs/hr (9 kg/hr)
BSD: 35 lbs/hr (13 kg/hr)
CSD: 115 lbs/hr (45 kg/hr)

Steam Line Installation

 NORTEC steam hose should only be used on short steam runs below 10 feet.
 Ensure that no condensate produced in the steam line will remain trapped. Steam naturally flows

upward and condensate naturally flows downward.

 See material recommended for use in the chart below. To eliminate the metal corrosion, NORTEC

does not recommend the use of steel piping.

 Consult the following pages for step by step distributor installation starting with Figure 1.
 Consult the charts below for steam and condensate sizing guidelines when using steam

distributors.

Steam Line Distribution Installation Manual | 2

Steam Hose

Copper Tube

Stainless Steel Tube

Short run < 10 feet (3 m)

  

Long run > 10 feet (3 m)





DI/RO Water



Load

Steam Run

Steam Line Material

Steam Line Description

lb/hr

kg/hr

ft m 0-30

0-13

0-10

0-3

Copper Tube

¾” MED-L Tubing (7/8” O.D)

0-30

0-13

10+

3+

Copper Tube

1” MED-L Tubing (1 1/8” O.D)

0-30

0-13

0-10

0-3

Stainless Steel Tube

7/8” Tube x 0.049” Thick

0-30

0-13

10+

3+

Stainless Steel Tube

1 1/8” Tube x 0.49” Thick

30-100

13-45

0-20

0-6

Copper Tube

1 ½” MED-L Tubing (1 5/8” O.D)

30-100

13-45

20+

6+

Copper Tube

2” MED-L Tubing (2 1/8” O.D.)

30-100

13-45

0-20

0-6

Stainless Steel Tube

1 ¾” Tube x 0.065” Thick

30-100

13-45

20+

6+

Stainless Steel Tube

2” Tube x 0.065” Thick

Please note that options shown in bold-italic font require 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 yourself to either
humidifier or distributors.

Dispersion Method

Condensate Hose

Copper Tube

Stainless Steel Tube

1 x Steam Distributor

3/8” Nortec 1328840

¼” MED-L Tubing (3/8” O.D.)

3/8” Tube 0.049 thick

3 x Steam Distributor

3/8” Nortec 1328840

½” MED-L Tubing (7/8” O.D.)

5/8” Tube 0.049” thick

* When using more than one distributor, the condensate line should be trapped before joined together.

Table 1: Steam Line Material

Table 2: Recommended Material and Size for Steam Run

Table 3: Recommended Condensate Line at Distributor(s)

3 | Steam Line Distribution Installation Manual

Condensate Return Guidelines for Main Steam Lines

 Use vertical condensate leg of distributor only. Do not over-tighten clamp.
 Condensate traps on steam mains must be located at all low points in the system, at each

elevation change and or directional change.

 Horizontal runs of steam must rise 2” per foot (10°) when flow is going upwards away from

condensate trap, and fall ½” per foot (2°) when flow is going downwards towards a condensate

trap.

 In a horizontal run of the steam main, condensate traps must be located at regular intervals of 20

feet.

 The condensate trap itself is a section of piping connected to the bottom of the main. A full size tee

must be used to create a condensate trap to allow the condensate to fall away from the steam

flow.

 Vertical drop of the condensate trap should be 1.5 times the diameter of the steam main but no

less than 12”.

 A P-trap should be installed at the bottom of the condensate trap. The center to center trap height

should be 2” greater than duct static pressure.

 All distributors must be individually trapped.

Figure 1: Drain Tee

Steam Line Distribution Installation Manual | 4

Figure 2: Distributor Mounting

5 | Steam Line Distribution Installation Manual

Figure 3: Vertical Airflow

Steam Line Distribution Installation Manual | 6

7 | Steam Line Distribution Installation Manual

Figure 4: Horizontal Airflow

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

steam, 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.).

Figure 5: Vertical Airflow

Steam Line Distribution Installation Manual | 8

Figure 6: Distributor Mounting – Horizontal & Vertical Flow

Figure 7: Distributor Mounting

9 | Steam Line Distribution Installation Manual

Figure 8: Spare Parts

Steam Line Distribution Installation Manual | 10

Warranty

Nortec Humidity Inc. and/or Nortec Humidity Ltd. (hereinafter collectively referred to as THE

COMPANY), warrant for a period of two years after installation or 30 months from manufacturer’s ship
date, whichever date is earlier, 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 the companies 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 makes no warranty and assumes no liability whatsoever for damage resulting from
freezing of the humidifier, supply lines, drain lines, or steam distribution systems.

THE COMPANY retains the right to change the design, specification and performance criteria of its
products without notice or obligation

11 | Steam Line Distribution Installation Manual

U.S.A.

1860 Renaissance Blvd.
Sturtevant, WI 53177

826 Proctor Avenue
Ogdensburg, NY 13669

CANADA

2740 Fenton Road
Ottawa, Ontario K1T 3T7

TEL: 1.866.NORTEC1
EMAIL: [e-mail]
WEBSITE: www.humidity.com