Nor-tec Livesteam Manual de usuario

LiveSteam

Installation and

Operation Manual

Includes installation, operation

maintenance and troubleshooting

information for your LiveSteam

humidifier

1506160-B| 12 JUNE 2013

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

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. All references to the Nortec name should be taken as referring to

NORTEC HUMIDITY LTD.

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.

INSTALLATION DATE (MM/DD/YYYY)

MODEL #

SERIAL #

CYLINDER #

Contents

2 Installation

2 Receiving & Unpacking

2 Location of the Humidifier in an Air Conditioning System

3 System 1 –Air Handling Unit

4 System 2 –In Duct Near An Elbow

5 System 3 –Multi-Zone System

6 System 4 –Dual Duct

6 System 5 –Primary and Secondary Distributors

7 Steam and Condensate Piping

7 Assembly of Single Distributor Humidifier

8 Assembly of Multiple Distributor Humidifier

9 Installation of LiveSteam Humidifier

10 Changing Orientation of Single Distributor Humidifier

10 Insulated Steam Distributors

10 Duct Support Bracket

12 Pressurized SAM-e

12 Plumbing

12 Installing Actuator to Steam Valve

23 SAM-e with Pressure Steam

23 Mini SAM-e with Pressurized Steam

27 Maintenance

27 Troubleshooting

1| LS Installation Manual

CAUTION: Servicing

Disconnect main power before any servicing.

The plumbing and electrical compartments contain high voltage components and

wiring. Access should be limited to authorized personnel only.

During and following operation of the humidifier, the steam and components in

contact with the steam such as the blower pack, steam lines, steam distributors,

and condensate lines can become hot and can burn if touched.

Walter Meier 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 Walter Meier.

CAUTION: Electrical

All electrical work should be done according to local and national electrical code.

Electrical connection to be performed by a licensed electrician.

CAUTION: Plumbing

Plumbing to be performed by a licensed plumber.

Drain water from humidifier can be very hot. Do not drain to public sink.

All plumbing work should be done according to local plumbing code.

CAUTION: Installation

Do not mount on hot surfaces.

Do not mount in area where freezing can occur.

Do not mount on vibrating surface.

Do not mount on floor.

LiveSteam produces steam at atmospheric pressure no devices which could block

steam output should be connected to the steam outlet.

Steam lines must be installed so that no restriction can produce backpressure in

the humidifier.

Regardless of selecting on/off or modulating control method, Nortec humidifiers

must have a closed circuit across its on/off security loop control terminal to

operate. Nortec highly recommends the use of a duct high limit humidistat.

LS Installation Manual | 2

Installation

Receiving & Unpacking Equipment

1Check packing slip to ensure ALL material has been delivered.

2All 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 period.

3Inspect shipping boxes for damage and note damages on shipping waybill accordingly.

4After unpacking, inspect equipment for damage and if damage is found, notify the shipper

promptly.

5All Nortec products are shipped on an FOB factory basis. Any and all damage, breakage or

loss claims are to be made directly to the shipping company.

Location of the humidifier in an air conditioning system

Reference the following systems for humidifier location:

Up flow affect

The up flow affect is a result of the air velocity versus the steam velocity leaving the orifices of

the distributor.

The air velocity is a product of the volume flow rate through a present cross sectional area. The

steam velocity leaving the orifices is directly proportional on the internal pressure, inside the

distribution tube. This pressure is reduced when two or more distributors are in use.

The following up flow guidelines has been established from testing:

Velocity

Inlet Steam Pressure

Up Flow Distance

500

2 ft

1000

1 ft

500

4 ft

1000

2 ft

These up flow distances are only guidelines. Every application presents a multitude of variables

which may shorten or lengthen the up flow distance. The location of the distributor may need to

be changed if condensation occurs.

Figure 1: Top View

3| LS Installation Manual

System 1 - Air Handling Unit

Figure 2: Air Handling Unit

Table 1: Air Handling Unit

Location

Advantages

Disadvantages

LOC. 1

MOST recommended.

Assuming there is

sufficient straight duct for

absorption.

High velocity may create long

absorption distances.

LOC. 2

Warm air from heating coil.

Good absorption will help

evaporate steam.

Cooling coils designed for

water.

Possible capacity drop due to

condensation on the coil.

LOC. 3

Warm air.

Good absorption.

If absorption distance is too

long it may wet the fan.

LOC. 4

Heating coils will help

evaporate steam.

Air is mixed well.

Absorption may be a problem.

No drain pan on heating coil.

Cold air.

LOC. 5

Not Recommended.

Filters may get saturated.

Cold air.

LOC. 6

Not Recommended.

Outside air may cause

condensation problems.

Problematic RH control.

LS Installation Manual | 4

System 2 - In Duct Near An Elbow

Note: If not calculated, dimension “X” is minimum 6’ before or after bend or transition. See up flow

effect on page 6 for calculation.

Figure 3: In Duct Near An Elbow

Table 2: In Duct Near An Elbow

Location

Advantages

Disadvantages

LOC. 1

MOST recommended. More

air on the outside of the turn.

Uneven air flow in the duct.

LOC. 2

Even air flow over the whole

duct.

Possibility of wetting of the

turning vanes.

Warning: This type of distributor may produce a whistling noise as the pressurized steam decompresses

within the distributor and is introduced into the airstream. This noise may be increased with higher

pressure applications. For noise dampening recommendations, please consult the factory.

5| LS Installation Manual

System 3 - Multi-Zone System

Figure 4: Multi-zone System

Figure 3: Multi-zone System

Location

Advantages

Disadvantages

LOC. 1

Maximum absorption distance

to dampers.

Possible loss of capacity to

condensate on cooling coils.

LOC. 2

Heating coil will help absorb

steam.

Minimum distance to the

dampers could result in

wetting.

LOC. 3

Warm air.

Minimum distance to the

dampers could result in

wetting.

LOC. 4

Not recommended.

Filters may get saturated.

Cold air.

If one zone requires most of the air quantity supplied to the system, this zone should be the

location for the humidifier. Humidity will eventually equalize when the system has been in

operation for a while.

LS Installation Manual | 6

System 4 - Dual Duct

Figure 5: Dual Duct

This system usually requires two steam distributors. The primary load (LOC.1) will go upstream

of the fan. The humidistat is located after the fan and before the hot and cold decks. The

secondary load (LOC. 2) will go downstream to the mixing boxes and will be controlled by a

humidistat in the space. Please consult your Nortec agent if absorption distance is a problem.

High limit humidistat is recommended in the mixed air duct.

System 5 - Primary And Secondary Distributors

Figure 6: Primary and Secondary Distributors

On occasion you may need a secondary load to reach a higher RH level in one part of your

operation (i.e. Hospitals). In this case, the primary load will maintain the normal space

condition (70°F at 35% RH) and the secondary load will satisfy the higher RH level (70°F at

45% RH) needed for that zone. High limit humidistats are recommended for each duct.

7| LS Installation Manual

Steam and Condensate Piping

1Steam supply must be taken from the top of the main supply to the humidifier. Do not take

from the sides or the bottom. See Figure 8.

2For removal of condensate from the steam trap the condensate line should not be under

pressure. Nortec recommends a check valve be installed after the steam trap if the

condensate return line is pressurized.

3Proper design and sizing of steam supply lines should be performed by a qualified firm.

Assembly Of Single Distributor Humidifier

Note: Follow all general instructions provided with valve and actuator.

All single distributor humidifiers will be assembled at the factory if the interconnecting piping

option is selected at time of order.

1Match the separator/valve assembly with the correct distributor assembly (Nortec will tag

both assemblies).

2The o-ring in the tube adaptor should be lubricated (use silicone based lubricant).

3Slide the distributor into the tube adapter. Make sure that the o-ring is not damaged.

Tighten tube adapter. The adapter should be hand tightened plus ¼ turn (25 in-lbs ± 5 in-

lbs).

Figure 7: Single Distributor Humidifier

4The union halves come together and are tightened to make a snug fit. The humidifier is

ready to be installed in the duct. Single tube comes factory assembled, multi-tube must be

field assembled.

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