Liebert SL-14050 User Manual

SGH Steam Generating Humidifier

Installation and

Operation Guide

IMPORTANT: Read and save this guide for future

reference. This guide to be left with equipment owner.

SL-14050 Form # 99-428 Rev. 1 / 150-1633 Rev. A

Table Of Contents

INSTALLATION 1

RECEIVING & UNPACKING EQUIPMENT ................................1

PRE-INSTALLATION CHECKPOINT ...................................1

BASIC HUMIDIFIER CONFIGURATION..................................1

LOCATION & MOUNTING .........................................1

HUMIDIFIERS .............................................1

BLOWER PACKS............................................2

STEAM DISTRIBUTORS ........................................3

PLUMBING.................................................5

WATER SUPPLY LINE .........................................5

DRAIN LINE...............................................6

STEAM LINE ..............................................6

ACCESSORIES - FILL CUP EXTENSION KIT(S) ...........................8

CONDENSATE RETURN LINE.....................................8

ELECTRICAL................................................9

PRIMARY VOLTAGE SUPPLY WIRING TO HUMIDIFIER.......................9

PRIMARY VOLTAGE SUPPLY WIRING FROM HUMIDIFIER(S) TO BLOWER PACKS .......9

LOW VOLTAGE CONTROL WIRING..................................9

On-OffControls ...........................................9

CONTROL INSTALLATION ......................................10

OPTIONAL MODULATION (CONTINUOUS CONTROLS) ......................10

OPTIONAL MODULATION (CONTINUOUS CONTROL) PACKAGES BY LIEBERT.........11

OPERATION 11

INTRODUCTION .............................................11

SGH OPERATION ............................................11

END OF CYLINDER LIFE .......................................11

MANUAL CAPACITY ADJUSTMENT .................................11

On/Off Controls...........................................11

Modulation Control .........................................12

OTHER POTENTIOMETERS .....................................12

DETECTING WATER SUPPLY DEFICIENCY ............................12

REMOTE INDICATION ........................................12

DOUBLE UNIT OPERATION .....................................12

BLOWER PACK OPERATION ....................................12

INSTALLATION

pply

3. Report any discrepancy immediately.

RECEIVING & UNPACKING EQUIPMENT

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

2. All material shortages are to be reported to Liebert within 48 hours from receipt of goods. Liebert assumes no responsibility for any material shortages beyond this period.

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

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

5. All Liebert 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.

PRE-INSTALLATION CHECKPOINT

1. Ensure that available voltage and phase corresponds with humidifier voltage and phase as indicated on humidifier’s nameplate label (see Figure #1).

Figure #1

SGH Series Humidifier

Condensate

Return

Steam Outlet

BASIC HUMIDIFIER CONFIGURATION

Liebert humidifier model SGH has a right side electrical compartment. Each electrical compartment has a hinge-down front door which is removable from any partially or fully opened position. Each electrical compartment has a screw-mounted right side cover which can also be removed for ease of electrical connection. For safety, the door when closed keeps the side cover from being removed.

Single units have a plumbing compartment attached to the left side of the electrical. Double units have a second plumbing compartment. Each plumbing compartment has a hinge-down front door which is not intended to be removed. For safety, the door must be closed in order to engage the lock. To avoid any danger, never operate the humidifier with a door off. For safety, each door when closed engages its own safety interlock switch. All switches must be engaged before the unit will operate.

To open the doors, unlock key, lift door up slightly and pull top of door forward. Door will hinge 180 degrees and hang straight down. To remove door, swing door parallel to floor. Then lift up slightly and out. To reinstall door, hold parallel to floor and insert hinge pins at bottom. The door can then be closed.

Figure #2

Clearance Requirements

WALL

WITHOUT BLOWER PACK

TOP VIEW

Power And Control

Drain

Water Su

Nameplate Label

Wiring

2. Ensure that the dedicated external disconnect is of sufficient size to handle the rated amps as indicated on the nameplate label. Refer to local codes.

NOTE: LOCAL AND NATIONAL CODES MAY DEVIATE. PLEASE CONSULT APPLICABLE CODES FOR CLEARANCE REQUIREMENTS IN ALL CASES.

MIN. 36" FRONTAL CLEARANCE.

LOCATION & MOUNTING

HUMIDIFIERS

SGH humidifiers are designed to mount on a

suitable wall or vertical surface. Do not sit on floor due

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MIN. 36"SIDE CLEARANCE RECOMMENDED. SEE NOTE.

to clearances required for plumbing, electrical, and control entrances. The clearance dimensions shown in this manual are for reference only and are the minimum required for maintenance of the humidifier. Local and National Codes should be consulted prior to final location and installation of the humidifier. Liebert can not accept responsibility for installation code violations.

In addition, install a minimum of 2 field supplied fasteners in the holes provided in the back of the unit to prevent the unit from being bumped off the wall bracket.

6. Make sure humidifier is level.

7. DO NOT mount humidifier on hot surfaces.

1. Location of the humidifier should be below and as close as possible to the steam distributor location as possible.

2. For front and side clearance requirements (for access during installation, maintenance and troubleshooting), see Figure #2.

3. If possible, DO NOT locate humidifier any further than absolutely necessary from steam distributor location, as net output will be reduced as a result of heat loss through steam hose. Also, increased static pressure may cause operational problems and necessitate use of the fill cup extension kit and other components.

4. Where possible, mount humidifier at a height convenient for servicing.

5. Wall mounting bracket provided should be securely attached horizontally and open edge upwards, using field-supplied fasteners. Use a minimum of 3 - #12 x 3" long wood screws, or better, into a vertical structural surface. If any spacer material is used between the bracket and the structural material such as drywall, increase fastener length accordingly.

8. If humidifiers are mounted on roof, a thermostatically ventilated weatherproof cabinet by others should be used. Consult factory.

9. DO NOT mount humidifiers in an area where freezing may occur.

10. DO NOT mount humidifiers on vibrating surface.

BLOWER PACKS

1. Blower packs are an optional accessory used to directly distribute steam to localized areas (such as computer rooms) or in structures that do not have a built-in air distribution system.

Figure #4

Built On Blower Pack

Optional Built-On Blower Pack

Single Circuit Humidifier

Built-In Supply Air Grille

Built-In Steam Distributor

Figure #3

Wall Bracket Mounting Detail

WALL

7.7”

FASTENWALL BRACKET (FACTORYSUPPLIED)TO WALLUSING ANCHOR BOLTS (3) SUPPLIEDBY OTHERS

005-030

7.7"(19.6cm)

7.7"(19.6cm)A

050-200

(19.6 cm)

Power And Control Wiring

See Figure #6 for mounting clearances.

2. Blower packs are available integrally-mounted on humidifier (built-on blower pack, BOBP, see Figure #4) or detached and field-piped and wired to humidifier (remote mounted blower pack RMBP, see Figure #5).

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Figure #5

Remote Mounted Blower Packs (SGBP)

WALL

FRONT

CONDENSATE

See Figure #6 for mounting clearances.

STEAM

005-030

10-20

3.2" (8.0cm)

3. All SGH blower packs consist of a steel cabinet containing: blower/motor powered by voltage directly from the humidifier, fuse, relay, speed select switch, stainless steel steam distributor, supply air grille with adjustable louvers, and built-in manual reset safety thermostat to turn off the humidifier if the blower pack gets overheated. Control thermostat, mounted on the steam distributor, starts the fan when steam is generated. When supply voltage differs from voltage required to run blower motor, blower pack will contain a proper transformer. All blower packs provide intake air filters.

4. Refer to Figure #6 for overhead and frontal clearances required for blower packs. Minimum clearance for the sides of the Blower Pack unit is 12 inches. Dimensions apply to both built-on and remote-mounted versions of blower packs.

5. Mount remote blower pack(s) using factory supplied wall mounting bracket, see Figure #5, with clearance as recommended in Figure #6.

6. Steam distributor on the built-on and remote blower packs have a hot surface that could result in burns if touched. If space allows, we recommend mounting at least 8 feet above the floor.

7. Do not use blower packs as ducted blowers. The air volume from a blower pack is not sufficient to absorb the steam generated.

8.8. Pipe the steam line as stated in the STEAM LINE section on page 6.

POWER AND CONTROL WIRING FROM HUMIDIFIER

SIDE

050-100

3.2" (8.0cm)A

3.2”

(8 cm)

Figure #6

Overhead and Frontal Clearances for Blower

Packs

SGH

Model

Min.

Number

of Blower

Min. Overhead

Clearance

inches (cm)

Min. Front Clearance

inches (cm)

Packs 010 1 18 (45) 30 (76) 020 1 18 (45) 36 (91) 050 1 36 (91) 84 (213) 100 1 48 (122) 156 (396) 200 2 42 (122) 156 (396)

*Remote mounted only. Four remote mounted blower

packs are recommended on the 200 model.

Nominal conditions 72ºF, 35% RH.

STEAM DISTRIBUTORS

1. Each cylinder requires its own steam line

and at least one distributor (do not join two or more cylinders to one larger steam line).

Any cylinder’s steam line may be divided into multiple branches to feed more than one distributor. Steam supply line “tees” are common copper fittings that are available for this purpose.

2. Steam distributor locations are typically as follows: supply air duct, return air duct, air handling unit. Proper location should consider: air temperature, relative humidity before the distributor, air velocity, dimensions of the location, amount of steam being introduced into the duct, downstream obstructions, and surfaces vulnerable to wetting.

3. When steam distributors are located in a duct, they should be in a straight section of duct at least 6 feet (2 meters) from any elbow or obstruction. If the duct or plenum conditions result in poor absorption distance characteristics, please consult your local representative or the factory. See Figure #7.

4. Steam distributors should always span the width of the air stream. Multiple steam

distributors, arranged in a bank, can minimize absorption distance.

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