Nortec Gas-fired Humidifier, GH, GH 100, GH 200, GH 300 Maintenance Manual

GH Series Gas-fired Humidifier

§

s+j\if

Installation, User.&

Maintenance Guide

FOR YOUR SAFETY: Do not store or use gasoline or other flammable vapors or any other appliance.

and

liquids

in

the vicinity

of

this

WHAT TO Do not try to light any appliance. Do not touch any electrical switch; do not use any telephone in your building. Immediately call your gas supplier from a neighbor's telephone. Follow the gas supplier's instructions. department.

WARNING: Improper property damage. Refer to this a qualified installer, service agency, or the gas supplier.

WARNING: If

the information in this manual is not followed exactly, a fire or explosion may result

causing property damage, personal injury or loss

IMPORTANT: Read

DO

IF

YOU SMELL GAS:

If you can not reach your gas supplier, call the fire

installation, adjustment, alteration, service or maintenance can cause injury or

manual. For assistance or additional information consuU

of

life.

and

save this guide for future

reference. This guide to be

Form #00-272 Rev. 2

left with equipment owner.

Table

Of

Contents

GENERAL

-WARNING

- RECEIVING & UNPACKING EQUIPMENT

- GENERAL SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

- MODEL DESIGNATION

......

. . . 1

............................

.

. . 1

INSTALLATION

- LOCATING AND MOUNTING

- GAS PIPING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

- AIR MANIFOLD/CONNECTOR HOSE INSTALLATION FOR DIRECT

- PROCEDURE:

-INTAKE

- TERMINAL LOCATION VENTING

-

- ELECTRICAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

AIR DUCT

...............

- STANDARD UNIT

DIRECTVENT UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

-

ADDITIONAL REQUIREMENTS WHEN VENTING THROUGH A SIDEWALL

-

- PRIMARY WIRING

- LOW VOLTAGE CONTROL WIRING

......

.......

. .

........................................

................................

.

...............................

VENT.

. . . . . . .

...........

.

.. ..

..

·

..

.

..

.

..

.

....

·

..

.

...

. 7

.

..

.

...

9

1

3

4 5

6 6

6

8 8 8

8

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

- BLOWER

- STEAM DISTRIBUTORS FOR DUCTED APPLICATIONS. . . . . . . . . . . . . . . . . .

- PLUMBING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

- WATER SUPPLY

-

- STEAM

- WATER

-

PACKS.

DRAIN LINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

LINE.

TRAP.

CONDENSATE RETURN LINES FOR STEAM DISTRIBUTORS

OPERATION

- WATER LEVEL CONTROL BAND

-

MC MODEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

-

- SEQUENCE OF OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

-

BLOWDOWN CALIBRATION

- MANUAL STEAM

P MODELS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

OUTDOOR ENCLOSURE HEATER SETTING. . . . . . . . . . . . . . . . . . . . . . . . . 17

-

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

..

10

..

12

LINE

..........

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

-.

. . . . . . . . . . . . . . . . . . . . . . . . 12

...

·

. 14

15

· . 15

......................................

OUTPUT ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

16

- B MODELS

-

GHMC DISPLAY OPERATION

.............................................

.....................................

17 17

START

-

- SAFETY INSTRUCTIONS

UP PROCEDURE

- FILLING THE SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

-

TESTING THE IGNITION SAFETY

.......................................

SHUT-OFF.

..............

.

MAINTENANCE

- DRAINING THE TANK

-

CLEANING THE STAINLESS STEEL

- COMBUSTION

- BURNER

ADJUSTMENTS/REPLACEMENTS OF COMPONENTS

-

GAS

-

HOT

-

[GNITION MODULE

- TRANSFORMER REPLACEMENT

-

AIR

-

COMBUSTION AIR BLOWER REPLACEMENT. . . . . . . . . . . . . . . . . . . . . . . . 20

-

TANK

BLOWER.

....................................

REMOVAUINSPECTION . . . . . . . . . . . . . . . . . . . . . . . 18

VALVE REPLACEMENT SURFACE IGNITER REPLACEMENT

SWITCH REPLACEMENT

REPLACEMENT

. . . . . . . . . . . . . . .

REPLACEMENT.

......................................

- HEAT EXCHANGER REPLACEMENT

TANK

& FLOAT CHAMBER

........................

...................................

............................

. . . . . . . . . . . . . . . . . . . . . 19

................................

...................................

..........................

..

.

17

..

17

· . 17 . 17

17

· . 18

19

19 19

20

- SERVICING THE UNIT

- FAULT CONDITIONS

-

BAND P MODELS.

-

MC

MODELS

- SERVICE CHECKS

- FLAME SENSOR. . . . . . . . . . . .

- IGNITER CHECK. . . . . . . . . . . . .

-

GAS

VALVE SETTING

- PREVENTATIVE MAINTENANCE SCHEDULE . START-UP AND INSPECTION

-

TROUBLESHOOTING GUIDE . . . . . . .

- REPLACEMENT STAND

- GH

GH ENCLOSURE PHYSICAL DATA

ENCLOSURE HEATER INSTALLATION INSTRUCTIONS

- GH

- GH DIRECT VENT . . . . . . . . . . . . .

BIP WIRING DIAGRAM. . . . . . . . . . .

- GH

- EXTERNAL

- VENTING MANUFACTURER

PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26-29

ASSEMBLY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

CONTROLS WIRING CONNECTIONS

...

..........................................

. . . . . . . . . . . . . . . . .

.................

.........

...........

...............................

.

.....

.

.........................

...

..

.

.....

...

..

· .

21 21

..

.......

.

...........

.

. .

· .

· . 23

· . 24

· . 25

...

· . 32

· . 33

· .

· . 36

21 21

21 21 21

21

31

34

.

35

GENERAL

WARNING

•

Improper service, maintenance, monoxide shock, personal injury or property damage. qualified installer, service agency, local gas supplier, information or assistance. The qualified

or

agency listed kits product. A failure to follow this warning can cause death.

•

Should off, before

• Do under technician to inspect the appliance and to replace any control which has been under water.

This installation guide has been designed to provide assistance sizing a

GH application your

local

installation, adjustment, alteration,

or

use can cause carbon

poisoning, an explosion, fire, electrical

or

other conditions which

may

Consult

or

your distributor

or

branch for

must use only factory authorized and

or

accessories when modifying this

electrical shock, fire, personal injury,

overheating occur,

shut

off

the manual gas valve to the appliance

not

shutting

use

off

this appliance

the electrical supply.

or

the gas fail to shut

if

any part has been

water. Immediately call a qualified service

part

of

the control system and any gas

when

installing, mounting, and

Series humidifier. Actual on site

may

vary. Consult Technical Services

NORTEC

representative.

cause

installer

or

a

or

GENERAL SPECIFICATIONS

The

NORTEC completely new patented design edge technology. The clean steam humidification at an

All GH models are available for

(0-2000 ft elevation)

GH Series

GH

is

or

for

high altitude (2000-4500 ft

humidifier

based

designed

economical

normal

is a

on leading

to

provide

altitude

elevation) applications.

GHMC for mounting outside when unit will ship completely installed inside the enclosure ready for field connection. will protect the unit from wind, sun

models are also available

space

is

and

with

enclosure

not

available.

outdoor

The

enclosure

precipitation.

MODEL DESIGNATION

The

unit specification label indicates the model

gas humidifier according to the following chart:

PRODUCT LINE

(Gas Fired Humidifier)

CONTROLS

B = BASIC (ON/OFF)

P = MODULATING MC = DIGITAL CONTROLLER

cJw

STEAM OUTPUT

(lbSlhr) Normal Altitude

KEYPAD

FUEL N=

NATURAL

P=

PROPANE GAS

GAS

GH MC 100

~!

of

__

_

:

i

!

I

~

N

01

price.

The

of

HA DV

RECEIVING & UNPACKING EQUIPMENT

1 .

Check

been delivered.

2. All material shortages are to be reported to NORTEC goods. NORTEC assumes no responsibility for

3.

Inspect on shipping waybill accordingly.

After

4. damage

shipper

5.

All F.O.B. factory basis. breakage directly to the shipping company.

packing Slip to ensure

within

48

hours from receipt

ALL

material

of

has

any material shortages beyond this period.

shipping boxes for damage and note

unpacking, inspect equipment

and

if

damage is found, notify the

for

promptly.

NORTEC

products are shipped on an

Any

and

,all

or

loss claims are to be made

damage,

DE·IONIZED WATER OPTION

HIGH ALTITUDE OPERATION

DIRECT VENT OPTION

INSTALLATION

1. The installation building codes or, codes, with the ANSI Gas Code, and/or Codes. Refer to the manual.

2.

The humidifier shall not be chimney flue serving

3.

Provide

ventilation air

7.3 of or Section 5.3

for

adequate

or

7.4, Air

the National Fuel Gas Code, ANSI

+-------~

+-------------'

must

conform with local

in

the

absence

2223.1,

CAN/CGA

Gas

Piping section

any

other

combustion

in

accordance with

for

Combustion

of

CAN/CGA

of

local

National Fuel

B 149 Installation

of

connected

to a

appliances.

and

Sections

and

Ventilation,

2223.1,

B149

Installation

this

7.2,

- 1 -

:;~:::::~"7:::::=.';-,",~;::;:-":=~:;:::;::;;:=:~:;;:==::-":===:::::"~:':::'::;::;;::=:::::::;::::::::;."";:!"==:::=:;;:-----:===:::;;..-='"~-===::':=:;:::::::::::--====:.-:;::::~-=:::::=::!:::-..;:;:::=:.;::::::::;!':;;:

MODEL

...

FUEL···

··.·B~~~iRr·iNPUT(BTuH;:··-roR\~i:~iZE

I i I DIAMETER!

i!

I

STO

NATURAL

PROPANE

(LP

.,

For high altitude units (2000-4500 ft) the input and steam capacities are

FUEL INPUT (BTUH)*

~_MAX

GAS

~-----+------~------~--------------------------~------------~------~

GAS)

i

____

+-_11_9_,0_0_O_!~1_1_9_,0_00

MIN

MAX

MIN

65,000 85,000 E

119,000 119,000 9 100 100

65,000 85,000 9 50 70

OV!

__ ~ ____

E

GH

--ST~£~~F;TYTMANiFOW.t.~ESS;NT~~iic-~Ts.tJT!:~0f~g~mu~i

STD

_________

100 SPECIFICATIONS

OV

100

__ ~ ____

50

10_0

70

de-rated

__ ~ ______________

by 10%.

...

-::::.:::::::::"..:::-::;;:::..""!;:=::-:::=::;::::;:::::~:':::;:::;:::-":!::;:''";:::;:::::::';-"::;::===-":;';;:':=::!;:::--,";=;:::;:::":=:':=:::":~":::::::::-'=;:="':::;1

ii

STO

. i

OV

~

______

(LBS)

~

(LBS) I

.,

For

high altitude units (2000-4500 ft) the input and steam capacities are

FUEL

NATURAL 357,000

GAS

1t

For

high altitude units (2000-4500 ft) the

BLOWER

SPEED ORIFICE

(MODEL)

INPUT (BTUH)"

STO

178,000

65,000

357,000

ov

357,000

255,000

85,000

357,000

input

and steam capacities

are

de-rated

300 210

70

de-rated

by

10%. STD: Standard Gas Unit DV:

DIAMETER

OV

-0,2

-0,2 0,00

-0.2

by

10%. STD: Standard Gas

0,00

0.00 1.062"

0.00

1.062"

Unit

AIR

DV:

350

Direct

Vent

SHIPPING

WEIGHT

(LBS)

800

Direct

Vent

660

Unit

OPERATIN GWEIGHT

(LBS)

1200

Unit

FUEL

NATURAL MAX

GAS

PROPANE

BLOWER

SPEED

(MODEL) DIAMETER (LBS)

MIN

(B,P)

MIN

MAX

MIN

(B,P)

* For high altitude units (2000-4500 ft) the

INPUT (BTUH)*

476,000

238.000

65.000

476.000

238.000 65,000

OV

476,000 340,000

85,000 476,000 340,000

85.000

input

MODEL

E 400 E 200 E 50

9 9 200 9

and steam capacities are

GH

400 SPECIFICATIONS

STEAM CAPACITY

(LBS/HR)*

STD

400

50 70

de-rated

- 2 -

MANIFOLD PRESS.

DV

400 280

70 400 280

STD

-0,2

-0.2

-0.2 0.00

by

10%. STD: Standard Gas

W.C:

OV

0,00 1.062"

0.00 0,00

0,00

0.00

IN

AIR

ORIFICE

1.062~

1.062ft

1.062"

1.062ft

1.062"

Unit

DV:

800

Direct

Vent

OPERATIN

GWEIGHT

1200

Unit

-

Codes, or applicable provisions

of

the local

building codes.

4. The required free area

is: 11

in. sq. (7,000

20

in. sq. (13,000

in. Sq. (19,500

30

in. Sq. (26,000

40 NOTE FOR DIRECT

The combustion supply air opening

the

required to

room where the appliance is

of

supply air opening

2

mm

),

for GH 100

mm7"

for

mm

),

for GH 300

2

mm

),

for

VENT OPTION:

GH

200

400

is

installed since the combustion air

be

requirements will

provided through the inlet

air duct (see installation section).Some

is

ventilation

required for cooling of the

electronic components NOTE FOR OUTDOOR ENCLOSURE:

Required free area of supply air

is

provided

through the bottom of the unit. Front louvers

in

ensure good air circulation These louvers should

be

the summer.

blocked for winter

operation.

5.

Cabinet back to provide combustion air

and

bottom contain air openings

to

the forced draft blower. Either the back or bottom set of openings must have at least

to

clearance

allow for adequate combustion

air. For example, if the humidifier

2"

mounted,

clearance must be maintained to

2" (50 mm)

is

floor

the unit's back surface.

6. Excessive exposure combustion air

to

contaminated

wiii result

in

safety and performance related problems. Known contaminates include halogens, ammonia, and chlorides, excessive dust, lime or dirt. Contact NORTEC Technical Services if you have any questions.

not

9.

During installation cover the humidifier

to prevent any dust or other contaminants from entering the cabinet when activities such as drilling are taking place'.

NOTE: Some combustible. Prior the area for insulating installed

in

an and clear of insulating materials. after the appliance

insulating materials may

to

installing this appliance examine

be

material. If this appliance

insulated space, it must be kept free

is

installed, it will

If insulation

be

is

added

necessary to

examine the area again.

LOCATING AND MOUNTING

GH

Series humidifiers are designed

(GH

suitable wall clearance dimensions shown

100 only), GH Stand,

in

this manual are for reference only and are the minimum required for maintenance of the humidifier. Local and National

be

Codes should installation of the humidifier.

consulted prior to final location and

NORTEC cannot accept

responsibility for installation code violations.

1.

Figure

#1

shows the locations connections to the Gas Humidifier. Careful consideration should be given to all connections when choosing a location for the humidifier.

Figure

Steam

1=========::::::::o=utJe=t{$=)

#1

EXHAUST VENT

OUT FROM THE

===+~:=:::;;;l--

to

mount

or

floor. The

of

all required

of

these

COMES

TOP

~~::t~ring

Water Input

Line

Gas Input

Line

Side

is

on

a

7.

All surfaces are zero clearance construction.

NOTES:

- The leveling legs must be left on

floor mounted

combustible material.

The humidifier shall not on

carpeting, tile or other combustible

material other than wood flooring.

8.

For recommended clearances for servicing refer to Figure

#2.

to

combustible

in

place when

be

installed directly

- 3 -

t::::::======::±:==:=f-

Figure #2

Top

View

•

Min, 36" Of Space

For Frontal Clearance i

I

T

Drain

Wall

With Direct

clearance Direct Vent

option

for

2. For front and side clearance requirements (for access during installation, maintenance and

troubleshooting), see Figure #2.

3.

Location minimum

4.

DO NOT locate humidifier any further than absolutely necessary from steam distributor location. Net output of Engineering Manual, Form increased static pressure (over result Consult factory if this situation occurs.

5.

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

6.

Wall mounting brackets (provided with GH

100) should

upwards, horizontal, using field-supplied fasteners (minimum of four

fasteners

vertical, solid surface. Put a security bolt through the hole provided cabinet so that the unit cannot

the

of

the steam distributor should be

of

36" above the humidifier.

will

be

reduced as a result

heat loss through steam hose (see

# -1630). Also,

7"

W.

in

steam leaking down the drain.

be

securely attached open edge

3/8"

diameter

in

each bracket). Attach

in

wall bracket. See Figure #3.

to

the back of the

be

bumped off

C.) will

a

- These legs may longer legs. Factory approval is needed.

- Removal or adjustment square end of a

be

removed and replaced

of

legs requires the

3/8"

socket driver.

10. Optional stands are available for all GH Series

humidifiers. Refer to Shop Drawing Package,

# 273 for details and part numbers.

Form

15

Clearances around the unit should also be maintained for good access the gas humidifier.

is

3 feet clearance the enclosure for on

the right side of the enclosure for the

needed

GH100/200, 4 feet is needed

on

the right side of

GH300/400. The front requires 3 feet

clearance for

16.

DO

NOT mount humidifier on hot surfaces.

17.

DO

NOT mount humidifiers

freezing may occur. If humidifiers

18. ventilated, temperature controlled, (above freezing), weatherproof enclosure. Consult

local representative for more information

your on

Nortec's enclosure.

ail

capacities.

in

an

area where

are-

mounted on roof, a properly

by

Figure

7.

Make sure humidifier mounted adjust using leveling legs.

8.

The GH 100 model adjustable leveling removed for mounting the unit GH stand. Maximum travel of legs

9.

The GH 200, equipped with adjustable leveling legs which have a maximum travel of

GH

#3

c

is

mounted level. If floor

is

equipped with

legs which may be

on

300 and

GH 2".

400 are

an optional

is

2"

19.

DO

NOT mount humidifiers on vibrating

surface. Consult factory.

20.

In

earthquake prone

Use the existing wall mount brackets

to

the wall with it sitting

unit Maintain spacing for air openings.

"Installation"

NOTE FOR OUTDOOR ENCLOSURE:

Optional

is

unit

The enclosure should be installed at a secure distance from any air or exhaust system. (also see local code)

The enclosure should be bolted down or secured if it

If lifting

forklift, lift under the unit at cross members for

stability. (Strapping belts can also be used.)

item

outdoor enclosure can also be used;

factory mounted inside the enclosure.

is

the

enclosure

to

are.:Js

8).

be

exposed

do not wall mount.

on

the floor.

to

high winds.

on

the roof using a

to

(See

GAS PIPING

fasten

- These legs may mounting

of

be

removed

an

optional stand.

to

allow

Installation of piping must

local codes, and ANSI Z233.1, "National Fuel Gas

be

in

accordance with

- 4 -

Code," Installation Codes

minimum

in

the United States or CAN/CGA-B 149

in

Canada.

The

following table indicates the maximum and

allowable gas pressures for the Gas

Humidifier.

INCHESW.C.

GAS MIN.

Natural

Propane

•

The gas inlet pipe size

~"NPT

for GH 100

3/4" N PT for

1"

NPT for GH300/400

Provide

an

adequate size gas supply line.

When black iron

be

must In

located ahead of the humidifier gas controls.

all installations, a manual shut off valve, located

outside the cabinet, must

GH

gas

4.5

,

9.0

to

the appliance is:

200

pipe

is

used, a sediment trap

be

installed. See Figure #4.

MAX.

14.0

Figure #4

NOTES:

1.

Failure the gas valve. not covered

2.

DO threads. A flexible with Natural Gas and Propane Gas

to

follow this procedure may damage

Over pressured gas valves are

by

warranty.

NOT use Teflon tape

on

gas line pipe

sealant suitable for use

is

recommended.

3.

Plan

gas

supply piping so it will not interfere with removal of gas valves or blower assemblies

The gas valve

and

front or side service doors.

is

provided with pressure taps to measure gas pressure upstream and downstream, (manifold pressure). The minimum gas pressure

is

shown

for the purpose

A

1/8" NPT plugged tapping, accessible for test

of

input adjustment.

gage connection, must be installed immediately upstream of the gas supply connection to the appliance. The humidifier

shall not be connected to a

chimney flue serving any other appliances.

NOTE FOR OUTDOOR ENCLOSURE: Gas lines

should

routed through the bottom

of

the enclosure

be

For direct vent units, the combustion supply air

is

opening appliance

not required

is

installed since the combustion air requirements will (see installation notes below). Some ventilation required for cooling

to

the room where the

be

provided through the inlet air duct

of

the electronic components

is

,J

Leak test all gas connections using a commercial

to

soap solution made gas leakage. humidifier

Seal

in

operation.

WARNING: Never use

gas leaks.

If a leak does exist, a fire or explosion

could occur, resulting

detect leaks. Bubbles indicate

all

leaks before placing the

an

open flame

in

damage, injury or death.

to

check for

The appliance must be isolated from the gas

by

supply piping system

closing its individual manual shut-off valve during any pressure testing of the gas supply piping system at test pressures equal to greater than 14"

W.c.

(3.5 kPa).

or

Dissipate test pressure from the gas supply line

before re-opening the manual shut off

valve to the

appliance.

AIR MANIFOLD/CONNECTOR HOSE

INSTALLATION FOR DIRECT

All direct vent units are shipped with the air

manifold and connector hoses packaged separately. The connector hoses and air manifold must be installed by a qualified installer prior to commissioning the unit.

Figure #5

- 5 -

VENT

Hose

u:uUlcclion

iApply

iiliccne)

Procedure:

1. Apply a ring of silicone around the outside each

of

the blower adapter connector.

2.

Mount a flexible connector hose connection secure using a gear clamp provided with the unit. Care should be taken not to kink damage

3.

Carefully bend the flexible hose(s) to give the

"S" shape

4.

Mount

base using the mounting bracket located on the bottom

6).

DO

HOLES

on

each blower adapter and

the flexible hose. (Refer to Figure #5).

as

shown

the air intake manifold to the cabinet

of

NOT

PUNCTURE OR ADD

TO THE AIR MANIFOLD.

in

the diagram.

the air manifold (refer to Figure

over

the

or

ANY

of

hose

•.

1.·11-1

S_U_p_p_li_e_r

: Z-Flex I Z-Flex

II

Flex-L

'I

I MICHIGAN CHIM-FLEX

:

I

il-~~i~-~-~~-~:~~~-

:b~~~"'~==o~"==,~=~"~~:.c.="'''o,''~==o,,'o,'''~~o,,'''=,~o,,,c."~=~~~,=,c.,,~~=="""="""='"'~=~"',,Jj

length that can be connected to the Each elbow equals bends should be smooth and have as possible to avoid restricting the

______

International_l~ll~~iner

-·--·T~I:~_~I;~~~~=~·-~~~e~--'I

The following table details the

90 degree elbow equals 10ft

Sft.

If flexible vent material is used, all

i

t.-

P_r_o_d_u_c_t

Iney

i '

',,:

CHIM-FLEX

'Liner

______

Aluminum

Liner

~

Aluminum

allowable

direct

and

each

large

combustion

Chim-

___

duct

vent

option.

45

degree

a radius as air supply.

:1

[I

i,i

III

i

Figure #6

cabinet base

5.

Apply

a ring of silicone to the outside

hose

connection on the air manifold.

6.

Mount hose manifold and secure using a gear clamp provided with the unit.

the corresponding flexible

over

each hose connection on

INTAKE AIR DUCT

against rear panel

of

each

connector

the

air

rl

Allowable Equivalent

I Maximum i

I '

I

:170

ft

(21

!

sealant to ensure that there are no leaks in

should be the same equivalent length.

duct, particularly recommended to insulate the intake condensation from occurring.

m) : 7ft (2.1

All jOints must be positively sealed

installed, the intake

When

Condensate may form on the outside

in

To connect the intake duct to

1.

Apply silicone around the outside connector on the top (Figure 6).

2.

Mount the intake duct secure with an appropriate clamp to proper seal has been achieved.

Int~ke

colder climates. It is

Lengths

Minimum

m)

duct

and

duct

the

air manifold:

of

the air manifold

over

the

with

exhaust

to prevent

connector

a silicone

the

duct.

of

the intake

of

the

ensure

~

vent

and

a

ii

All direct

provide fresh outside air for combustion.

Each air intake manifold has a Single 4-inch

(1

OOmm)

must

be connected.

Intake material must be UL or ULC listed 4-inch diameter The

following table lists several suppliers

intake

vent

units require

diameter

(1.0.) corrugated 2-Ply aluminum ducting.

material.

inlet to which the supply air

an

intake air

duct

of

approved

to

TERMINAL LOCATION

The intake duct must terminate at an outside

location with the supplied vent terminal.

The intake and vent terminals

in

shown

distance must be maintained from the

- 6 -

Figure 6.5.

locating the intake terminal, a

When

must

exhaust

be

installed as

minimum

vent

Figure #6.5

The

cabinet.

GH

must be vented through the top of the

terminal Figure 6.5 shows exhaust terminals

to

prevent re-circulation

the

proper location

on

an

outside wall.

of

Periodic cleaning of the screens

exhaust gases.

of

intake and

in

the terminal

required for proper operation.

Location

of

intake & vent terminal must comply

with all local and national codes.

VENTING

CAUTION: The humidifier shall not be connected

to

a chimney flue serving any other appliances. All venting must be installed national codes.

NOTE: These requirements apply to both

standard, direct vent units and units with outdoor

enclosure.

in

accordance with local and

is

NOTE FOR OUTDOOR recommended sidewalls

to

vent the gas unit through the

of

the gas enclosure to eliminate possible

ENCLOSURE:

It

is

leakage through the enclosure root.

The vent pipe must be the same diameter

vent connector.

and

sizes

part numbers. The supplied vent

See following chart

for

as

the

venting system

termination at the humidifier is a MALE CONNECTION. Standard venting

to

female female

male path. It is highly recommended that a

to

female adapter be assembled directly onto

hook

ups require a

the humidifier. This will establish the proper vent sequencing. Consult with venting contractor/supplier for proper hook up. Contact

NORTEC for additional

information.

GH100 units are supplied with a 90 degree elbow

to

(female has the correct dimensions

the knock-outs

installed venting can be connected to this elbow

long can

female) for the vent connection. This elbow

to

align the venting with

in

the top and rear cabinet panels. The

as

a proper seal can

be

replaced with

be

achieved

an

equivalent elbow supplied

or

as

the elbow

the venting manufacturer.

The maximum flue gas temperature at the humidifier vent connector only special gas vents listed for use with Category or

IV

gas burning appliances, such as those listed the venting system chart. (Listed to in

the USA

and

ULC-S636

will not exceed 480°F. Use

III

in

UL

Standard 1738

in

Canada.)

by

,.J

Venting

Model

GH 100

GH

100

GH 100

GH 200 IV Flexmaster GH 300 GH

400

GH 200 GH 300 GH400

GH 200 GH 300 System GH 400

Category

III

IV

Manufacturer

Flexmaster

Magnaflex

Flex L Int'I Inc.

Magnaflex

Flex L Int'I Inc.

Z-Flex

Systems

Diameter

:

Approved

Vent

:

3"

4"

StaR-34 System

For

Use With

Rigid

02SVEPXX03

NA

StaR-34 System:

02SVEPXX04

NA

GH

Series Humidifiers

Flex

i

22TL294C03 02SVSRTX03 02SVEDPS03

03SSPLV

:

StaFlex-294

System

22TL294C04 02SVSRTX04 02SVEDPS04

04SSPLV

StaFlex-294 SRTT-04

- 7 -

Vent

Terminal

03SSHVT

.

SRTT-03

04SSHVT

Sidewall

Drain

Tee

NA

SRTDH-03

NA

SRTDH-04

All venting joints must

high temperature

480°F.

least

When venting a category necessary venting system. This provision may be met by using the special drain tee chart.

When a drain trap

in

the drain

into the drain.

of

height

trap accordance with local plumbing codes.

standing water column.

Prior

to

is

filled with water and that the drain terminates

RTV

to

provide for condensate removal

tee

to

ensure that flue gases do not vent

Install the trap with a 12" minimum

activating the appliance, ensure that the

be

positively sealed with

silicone sealant rated for at

IV

appliance it

as

listed

in

the venting system

is

used it

is

necessary

is

in

the

to

install a

in

ADDITIONAL REQUIREMENTS THROUGH

For sidewall venting. locate the humidifier as close

as

possible

Locate the vent terminal at least three feet above any forced air inlet located within ten feet; or four feet below, four feet horizontally from, or one foot above any door, window, or gravity air inlet into any building.

A minimum horizontal clearance electric meters, gas meters, regulator and relief equipment

Locate the vent terminal at least seven feet above

grade when it

A SIDEWALL

to

the wall being used.

is

required

is

..

adjacent

to

WHEN

public walkways.

VENTING

of

four feet from

at

least

For any vent lengths over

insulated vent.

WARNING: Provide a screen or barrier

personal injury

contact with vent pipe

Standard Unit

The maximum recommended vent length

equivalent feet where each 90° elbow equals

45° elbow equals

each should be assumed additional

Direct Vent Unit

A maximum exhaust vent length equivalent feet (21m) option, where each elbow equals 5ft. This maximum cannot be exceeded.

All horizontal runs of the vent pipe shall have a minimum rise of supported at maximum intervals of each point where

The vent terminal must be installed within the same atmospheric pressure zone

air inlet

terminal is required for proper operation humidifier.

of

Periodic cleaning of the screens

in

areas where inadvertent personnel

can

5'.

to

lose 10% output for each

50' equivalent length.

is

90

elbow equals 10ft and each 45

1/4" per foot

an

elbow

the humidifier.

20

feet long, use

to

prevent

occur.

is

100

10'

and

For lengths over 100', unit

of

only 70

permitted with the direct vent

(21

mm/m) and shall be

5'

(1.5 m) and at

is

used.

as

the combustion

in

the vent

of

the

of

Locate the bottom twelve inches above grade or ground, expected snow accumulation level. may

be

higher

on

walls exposed

Avoid areas where condensate drip may cause problems such as above planters, patios, or over public walkways, or over area where condensate or vapor could create a nuisance or hazard, or could be detrimental operation of regulators, relief valves, or other equipment.

Refer

to

the vent manufacturer's installation

instructions.

the vent terminal at least

or

normally

The

snow level

to

prevailing winds.

local experience indicates that

an

to

the

ELECTRICAL

PRIMARY WIRING

1.

Humidifiers require field wiring to primary voltage 120 Vac, 15A fused circuit, single phase.

Wiring

hand side of control compartment.

#1.

2.

When installed, the appliance must electrically grounded codes the National Electrical Code, ANSI/NFPA 70, and/or the CSA external electrical source

terminal blocks. Power requirement

is

fed

through a 7/8" hole

or,

in

the absence

C22.1

in

accordance with local

of

Electrical Code, if

is

on

upper right

See figure

be

local codes, with

utilized.

an

is

NOTE OUTDOOR ENCLOSURE: Flue gases

be

must

vented out of the enclosure.

- 8 -

3.

Connect ground wire to cabinet ground clamp.

4.

External wiring sizes must be

with

NEC

and/or CEC and existing local

electrical codes and by-laws.

in

accordance

NOTE FOR OUTDOOR ENCLOSURE:

- Primary power should be routed through the grille at the

the bottom of If backup heater

-

unit.

is

used, separate 240 supply must be

provided with disconnect brought to the Enclosure for

20A-

the heater. (Heater uses wiring size) heater for instructions

See installation drawing provided with the

on

be plugged into 3-pronged, If units operates during the summer, wire exhaust fan

-

consult local codes for

page 32. Note: Heater may

30

ampere, 240 V outlet.

provided with the enclosure (120Vwires supplied with enclosure). Exhaust fan power can be the same sup-

to

ply then the power

LOW

VOL

rAGE

the unit.

CONTROL WIRING

B - Duct Mounted Safety High Limit On/Off

Humidistat: Wired

on

rise

to

safety setpoint. Set to approximately 85%

RH

as

a safety to prevent saturation and wetting

to

make on drop

in

humidity, break

in

duct. Highly recommended for ducted applications.

C - Duct Mounted Safety Air Proving On/Off

Switch:

Wired to make when sensing air flow, break

when no air flow. Used as a safety to prevent

is

saturation when there

no air flow. Highly

recommended for ducted applications.

D&E Humidistat: Provides a modulating signal that represents the output

the

humidifier. Refer

the

signal ranges that can be used with each model.

Wall or Duct Mounted Modulating

to

(up

to 100%) required from

to

the sections below that detail

the unit

the

Figure #7

On/Off Signal Loop

(BModels)

A

sI

-r

C.l

External

Internal

~~

__

~~

__ ~ __

Available

All GH models require at least one type control signal for unit operation. Refer below that detail the types of controls that can be used with each

model.

Low voltage control terminal strips are provided the electrical compartment. Internal sides are factory

wired. External sides are to the specific control-wiring diagram supplied with each unit.

Field wiring from humidistat to humidifier and between devices should be kept as short

as

possible.

Controls are available from

can

be

accessories and

ordered with the humidifier. Controls by others maya/so meet the criteria noted below. The following

of

summary used with

A -

Humidistat: Wired

on

rise

make/break set

the common types

NORTEC Gas Humidifiers.

Wall or Duct Mounted Control On/Off

to

make

on

to

setpoint. Set to desired

of

contacts from a Building Automation

System.

~~

__ ~ __

to

the sections

be

field wired. Refer

18

AWG or heavier and

NORTEC as

be

used as long as they

of

controls that may be

drop

in

humidity, break

RH.

Can be a

of

is

L-~

input

to

a

in

NOTE FOR OUTDOOR ENCLOSURE: Control wiring should be routed through the grill at the bottom of the unit.

MODELS

GHB

GHB models will accept on/off controls only (see

A,

B & C

on

figure #4.1).

Band

whereas be

wired

terminals 1

C are optional. On/Off controls are

in

series (only one path for current) across

and 2 on strip. All on/off controls used must be the

contacts are closed when operation

to

open

across these terminals to replace on/off controls and

.

shut off the unit. A jumper wire may

In

general, A

is

essential

the low voltage control terminal

of

the type that

is

required and

be

placed

provide for constant operation.

Caution: Terminal 1 is the 24Vac control transformer; it the transformer if any control

"hof'

wire from the

will trip the 3A breaker on

field wiring touches

ground metal.

MODELS

GHP GHP models accept a single 0-10 VDC or 0-20

mA

control signal (see D

terminals 4

and 5 on

on

figure #4.1) across

the low voltage terminal strip to

generate a modulating output from the humidifier.

and

Terminals 1 and

may be used

3 are 24 Vac and ground respectively

to

power a remote mounted

modulating humidistat.

An

on/off security loop exists across terminals 1

and 2 and

should be wired as described for GHB

models.

GHMC

GHMC models may or dual channel modulation. Control signals 0-10

VDC

MODELS

be

configured for either single

VDC

or 0-20 mA (0-5 VDC, 1-5 VDC and 2-10

are also available). The unit must

be

ordered

can

be

to

- 9 -

from the factory for the desired signal type and number of

channels. When configured for 2-channel

modulation the humidifier will generate steam only

if both channels indicate a demand (see O&E on figure #4.1). humidifier will satisfy the lower demand

If both channels are demanding steam the

signal.

do not have a built-in air distribution system. Blowers are remote mounted only.

2.

Blower packs are remote mounted only. See Blower Pack Manual XX-277 for requirements and installation instructions.

An on/off security loop exists across terminals 1 and 2 and should be wired as described for GHB models.

CONTROL INSTALLATION

1.

Mount any wall humidistat (control or high limit) over standard electrical box at height similar to typical thermostat. Any wall

in

humidistat should be of

overall space being humidified and not

path

of

blower pack or air supply grille. Do

mount

on

an

outside wall where temperature

fluctuations can affect control response.

2.

Mount duct humidistat representative of overall air humidity, usually in

return duct.

of

steam distributor or

Do

zone. Mount humidistat where air's humidity and temperature are uniform and representative of spaces being humidified.

3.

Mount duct high limit humidistat downstream

of

steam distributors far enough that, under normal humidity and air flow conditions, steam will have been fully absorbed (typically at

feet). It must be located to sense high

10 humidity only when uniform and representative air is over-humidified or approaching saturation.

location representative

in

location

not mount

in

turbulent

it

directly

or

in

mixing

in

not

front

least

STEAM DISTRIBUTORS FOR DUCTED

APPLICATIONS

1.

Any humidifier's steam line may be divided into multiple branches to feed more than one distributor. common copper fittings that are available for this purpose. of the steam supply lines.

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 introduced into the duct, downstream obstructions, and surfaces vulnerable to wetting.

3.

When steam distributors are located they should be least 6 feet

obstruction. result

characteristics, please consult

representative or the factory. (See Engineering Manual, Form #

information

Figure #8.

Steam supply line "tees" are

Do

not install zone valves on any

of

steam being

in

a straight section of duct at

(2

meters) from any elbow or

If the duct

in

poor absorption distance

on

absorption distances.) See

or

plenum conditions

your

-1630

in

local

for

a duct,

4. Mount duct air-proving switch so that to sense air flow or

when air flow

lack of

is

sensed and break when air

it.

flow fails.

5.

Check operation

of

all on/off controls before

starting humidifier.

6.

Calibration of controls (on/off the field may be necessary due to shipping and

handling. Verify humidistat accuracy

before commissioning system.

BLOWER PACKS

1 . Blower packs are

to directly distribute steam to localized areas (such as computer rooms) or

an

optional accessory used

-it

is able

Wire it to make

or

modulation)

in

structures that

in

Figure

NOTE: MuUipie Steam Oislnbutors

Can Reduce

tile

Minll"l1Um

4.

Steam distributors should always span the full width

of

the air stream. Multiple steam

distributors, arranged

MinlrnJm

Distance.

#8

(2m)

6n~

in

a bank, can minimize

absorption distance.

10-

-

Nortec Gas-fired Humidifier, GH, GH 100, GH 200, GH 300 Maintenance Manual

Specifications and Main Features

Frequently Asked Questions

User Manual