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-

-

I~

. (

'J

5.

Exercise extreme caution when installing fiberglass or internally lined ducts. If necessary, remove 4-6 feet of the lining where the steam

6. High positive or negative static pressure ducts or plenums have special requirements. High positive static pressure ducts may require the unit

water trap.

7.

Low temperature ducts below 60°F (15°C), shallow ducts, or branch ducts might require the use of a field supplied condensate drain pan below the steam distributor.

to

is

being introduced.

be

fitted with

an

extended external

See Figure

in

#9.

rod through top or bottom of duct. See Figure #11.

Figure

#11

3/8' Ttveaded

(Field

SuWied)

lbd

~

Hex

Nut

Duct

Steam DiStlibutor

(Factory SuWlied)

,)

Drain Pan T·SarCeiling

Figure

#9

~~L

¢J~

! .....:...

DrainPan

8.

The steam distributor mounting plate perpendicular to the steam distributor. When the mounting plate the duct, the distributor downward slope poor condensate drainage and "spitting" condensate

in

duct. See Figure #10.

~o

~

I

is

attached

is

to

the distributor will result

level.

to

the side

An

is

of

upward or

in

of

10. Using duct mounting template provided, cut a hole

in

side of duct just large enough steam manifold and condensate drain pipe assembly. Use four sheet metal screws attach mounting plate Figure #12

1.

Steam Distributor Mounting Plate

2.

Cut

3.

Mount

and

, Figure #12

Hole In Duct For Insertion Using Template

With Four Sheet Metal Screws

Figure #13

#13.

2.

to

side

of

to

admit

to

duct. See

3.

Figure #10

~

I

~

=-'-1

1,

,)

Any distributor longer than 3 feet

9.

be

should

supported at its end with a threaded

I-

Always

I~

:;:::J

1-

Mount

Level

(1

meter)

,

..

§J~,,

__

,]:t~!~,_

..

___

..

A_,

__ , ______

~.,.

__

: ASD

8"

14"

4.125" 3.875":

8.25" 5.15"

rBs'D-"--TO"-"---4:875;i--4~1'25":

CSD

,

~

._-------_

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

_-_

..

_-_

..........

_

....

---_

...

_

..........

,

,S.D. H min. A B

ASO--6"--'"3-:-ZS';;----Z:7f?'''

BSD

8" 5.125" 2.875"

'CSU--12·----7~6·25"--4~375"'·

-

11

-

11. It is recommended that single distributors are mounted near the bottom of the duct

is

the steam

dispersed into the majority

to

ensure

of

the

air flow. See Figure #13.

WATER SUPPLY LINE

1.

The humidifier potable tap water.

is

intended to operate

on

cold

12. With multiple steam distributors, the top steam distributor should duct to avoid possible condensation surface below

of

duct. The remainder

is

proportioned accordingly. See Figure

be

at least 8" below top

of

on

space

#14. For short steam absorption systems see

Figure #15.

Figure #14

MIN.

H-16"

MIn.W-12"

H2O"

W17"

2.

DO NOT use a hot water source to humidifier. Minerals

surfaces and the fill valve's

will adhere more easily to

small flow

su

regulating orifice could become plugged.

3.

Consider using a water softener. Longer operating times between tank cleaning reached

4.

Reverse osmosis (RO) water can provide very long times before cleaning is

on

softened water.

is

required since it

cleaner than softened water. However, also more corrosive. Consult factory before using. Deionized specific models. Consult

(01)

water may be used with

NORTEC

rep resentative.

Figure #16

Control Circuit

Water Connection

-rr==:::::~~'"

pply the

will be

it

is

Figure #15

/ Steam Header

PLUMBING

NOTE: All water supply and drain line connections should local plumbing codes.

NOTE FOR OUTDOOR ENCLOSURE: Water

supply should be routed through the bottom the enclosure. If freezing conditions occur, water lines must be heat traced

be

installed

up

to

in

the unit.

accordance with

grille

of

Gas Connection

Drain Connection

5.

Standard fill valves are sized for water

30 to

80

pressure ranging from to

60

psig). For other pressures, consult

psig (ideally

factory. This pressure should be measured at the humidifier if the water pressure is suspect.

6.

ALWAYS supply the water supply line dedicated humidifier copper

to

within 4 feet of the humidifier.

Reduce copper

and

install a shut off valve

to

facilitate servicing. Use

to

3/8"

00

and connect

to

the

%"

factory-supplied 3/8" olive compression fitting on

the side of the humidifier.

NOTE FOR OUTDOOR ENCLOSURE: Manual shut off valve should be provided both at the unit and inside the building for additional safety if freezing condition may occur.

00

to

55

in

the

-

12-

DRAIN LINE

1.

The humidifier is equipped with a 1" NPT drain outlet connection See Figure #16. A field-supplied funnel is recommended. prevent backup due badly installed drain lines.

2.

The drain line should not frequently by personnel, or where plumbing codes prohibit equivalent for safety reasons, since drain water from humidifier Sump/Condensate pumps are available (refer to Engineering Manual Form #XX-261) if appropriate drain

on

the side

See Figure #17. It will

to

partially blocked

end

it.

Route

to

a floor drain or

can

be very hot.

is

not available.

Figure #17

RECOMMENDED

of

the humidifier.

or

in

a sink used

an

Figure #18

To

Drain

Figure #19

Fiekt Supplied 1"""laled

Hard Copper Pipe

CI'

Flexble $learn Hose

Avaliable From F

Min.

10

Degree Slope

Min.

adory

3'

3.

Keep drain lines drain lines sloped down, not since low spots sediment and cause backup. The drain line should not use

factory. NOTE FOR OUTDOOR ENCLOSURE:

Humidifier must not

-

- If freezing condition occur, drain lines should be heat traced.

STEAM LINE

Copper Reducer

As

Funnel Drain

To

SeNe

(By

Others )

NOTE: Drain Nipple

as

Should

short

Not

Reach

Bottom Of The Funnel.

as

possible. Keep level and not up

in

drain lines will accumulate

be

1"

0.0.

copper pipe or larger. Do

plastic pipe for drain lines. Consult

be

drained

on

the roof.

3'min.

2.

Do

not install zone valves on steam lines.

Improper'adjustment

will over-pressurize the

gas humidifier

3.

NORTEC steam supply hose

be

piping should steam distributors should to

be

promote_condensate runback. See Figure

#18. If this slope

sloped downwards from the

to

the humidifier. Slope

at

least 2"

in

is

not possible, condensate

or

12"( 10 degree slope)

must be removed before the distributor. Figure #20

Figure #20

-

I

y

..

field-supplied

See

1.

Field-supplied hard copper with %" thick (min.) insulation with

is

recommended for'steam supply,

NORTEC supplied steam hose coupling used to make connection Figure #18.

to

humidifier. See

-

13-

"-

rt

Condensate

To

Drain

4. Minimize the length of steam line and keep it as straight as possible, minimizing bends.

Avoid using use

long radius turns (using tube oversized copper or pairs of will reduce the condensate generated by

90° elbows. Wherever possible,

bender

on

45° elbows). This

heat loss. This will also reduce the back pressure and avoid the need water

trap.

5.

Ensure that the steam hose does not kink sag.

The

steam hose becomes more flexible

when

hot. The hose should be supported to

prevent

water traps. Only use steam hose connections or steam line runs less. See Figure

to install an extended

of

5 feet

#21

.

or

for

or

Figure #22

er

...

AF

....

Lew Poinl10

n.

Steam Un

.......

Al'f)roac:ft

R_~

The

o..,buDf

Wh

From Abo

__

...

,

Figure

#21

6. To ensure odor-free steam, always use NORTEC

steam hose. Check steam hose and hose couplings periodically for cracks, breaks, kinks. Replace as required. substitute hose. NORTEC

is

not responsible

DO

for health effects or damage from substitute hose.

Steam

7.

1-1/2") copper pipe.

than to

8. Do not use steel or distribution or hose other than

lines require 1-5/8"

F-or

40

feet use insulated nominal 2"

ensure

the draining

of

plastic pipe for steam

0.0.

(nominal

steam runs longer

copper

condensate.

NORTEC

supplied. Substitution will void warranty.

If

steam

9.

or humidifier, a condensate trap

line

is

routed below steam distributor

if

the

steam distributor is lower than the

"tee" will required to remove water at this low point. Run condensate from trap to nearest drain lower

than the distributor. See Figure #22.

10. Do

not

run steam line more than

'1

foot per

Ib/hr output. Example, 10 Ibs/hr should have

a steam run longer than 10 feet. If long

runs are unavoidable. the humidifier should be

sized larger to compensate for condensate

be

not

NOT

losses and insulated copper should definitely be used.

NOTE

FOR recommended the enclosure and the building

specifically if freezing conditions may

unit occur.

WATER

1.

TRAP

The

GH atmospheric pressure. Pressure head must develop into air duct.

2.

Combined resistance pressure and steam small pressure head in amount of positive static reflected directly by water column differential that develops

3.

The built in water trap allows a 12" W.C. pressure before

through drain. This pressure should not be exceeded

4. Static pressure distributor's steam outlets are downflow duct

CONDENSATE DISTRIBUTORS

1.

Nortec steam distributors and

have built-in connections for draining condensate. These condensate lines connected to the nearest floor drain condensate pump (available from A flexible condensate hose, (available from

OUTDOOR

to

insulate

Series humidifier

to

push steam through

of

line resistance creates a

water

in

the built in

..

is

usually

applications.

RETURN LINES

ENCLOSURE:

steam

produces

lines between

or

air

handling

steam

supply

duct

positive static

tank. Total

pressure

water

head

trap.

maximum

steam

higher

FOR

escapes

when

faced

STEAM

into

blower

or

NORTEC).

It is

line and

is

of

packs

off

must

to a

at

be

- 14 -

NORTEC), may be used for short condensate runs.

2. Always incorporate a trap

routing

of

in

condensate return line. Condensate that

in

accumulates steam escaping. Depth duct static pressure

trap will prevent possibility

of

trap must exceed

in

inches

of

water column.

See Figure #23.

Figure #23

Depth

Of

Trap

My"

2" More Than

Condensate Trap

Must

Be

Static Pressure

Duct

of

On

initial startup, the solenoid operated water fill valve opens level reaches float

and

fills the water tank. When the water

"8", see Figure #24, a call for humidity will initiate the firing sequence. The water fill continues

until float "A"

is

reached. Float "A" will

initiate a variable time delay relay which maintains

of

water flow for a preset amount portion of this time the water exceed the level

of

the blowdown and water will flow

time. During a

level

in

the tank will

down the drain until the timed cycle is complete.

in

During operation, the water level

by

lower

evaporation until float "A" initiates the fill and

the tank will

overflow cycle again.

If the water level'ever falls below float "8" the

burners

will shut down to prevent any damage

to

the

unit.

Figure #24

PULSED

FILL

TO

A

CONSTANT

-f,~-+-~--II:;.f+f

FILL

TO

a

-;~It-+-~:::-~~r-t"~~,,

c~~~~~~~~~~~y

SLOWDOWN VALVE

1'\

3. Ensure

the

trap

is

3' minimum under the

V steam distributor and has the trap as close to

as

the floor drain

4.

Provide a

when distributor

plenum.

"u"

It

possible.

trap

in

condensate line even

is

located

in

return air

stops a suction action from impeding condensate flow with duct pressures below atmosphere.

5.

All condensate return runs must be well sloped towards the humidifier to ensure adequate flow.

OPERATION

WATER LEVEL CONTROL

Band

chamber maintains water cycles through a solenoid operated valve. water channel and second channel. The tank fill incorporates a (25mm) minimum air gap, to meet plumbing codes. This fill humidifier operation.

P Models

A two float switch probe located

level

is

routed into the water tank through one

is

routed

is

isolated from the main tank to enhance

to

the float chamber through a

in

and

controls the fill

a separate float

Cold fill

1"

TANK

Me

Model

A three-float switch probe located

in

a separate float chamber maintains water level and controls the cycles through a solenoid operated valve. Cold fill

water

is

routed into the water tank through one

is

channel and

routed second channel. The tank fill incorporates a (25mm) minimum air gap,

fill

is

This

isolated from the main tank to enhance

to

the float chamber through a

1"

to

meet plumbing codes.

humidifier operation.

On

initial startup, the solenoid operated water fill

valve opens

level reaches float

and

fills the water tank. When the water

"C", see Figure #25, a call for

humidity will initiate the firing sequence. The water fill

"8"

is

continues until float

is

level

between Float "A" and "8" the fill valve will be

reached. While the water

pulsed for intervals proportional to the demand for humidity. When the water

valve will

fill

be

disabled.

level reaches Float "A" the

60

seconds after the fill

valve is disabled the drain valve will be activated (for a

fill

- 15 -

period

of

0-240 seconds set by programmable parameter refer to the

DRN 1). For setting

of

this blow down time,

GHMC Display Manual, form #274.

Figure #25

SEQUENCE OF OPERATION

Provided the necessary power, water, gas and vent connections are completed, the' unit is started by the activation

panel.

of

the on/off switch located

on

the front

HIGH WATER LEVEL OVERFLOW PROTECTION

During this time water will be drained from the top

of

portion timed

sequence

the tank and blow down the drain until the

cycle

is

complete.

is

The fill valve

until

disabled following the above

water

level

in

the tank drops below float "B" (due to evaporation). At that time the above sequence below any

is repeated. If the water level ever falls

float "G" the burner(s) will shut down to prevent

damage

to the unit.

AND

When the operating humidistat and

are closed, the ignition module

will energize the igniter.

safety

controls

The hot surface igniter then heats up, and after about seven seconds, the gas valve

is

energized. The burner will then be lit and the igniter will stop glowing. If the burner flame within 4 seconds, the gas valve

cycle will be repeated a maximum When the humidity in the the operating controller, the burners will the unit

will remain idle until the next call

is

not sensed by the

will shut

of

three times.

space matches the setting

flame

off

and this

shut

for

humidity.

sensor

down and

SLOWDOWN CALIBRATION

The gas humidifier will periodically "blowdown" or skim water from the tan k to reduce the concentration of total dissolved solids that accumUlate during long

term operation. Gas Humidifiers are shipped factory set at maximum blowdown (approximately output). This setting ensures that scale build-up will be minimized for blowdown

all

water conditions.

is

field adjustable. Two parameters will help determine the proper blowdown setting Gas-Fired Humidifier

• Water hardness

• Silica content

The

of

20%

amount

the

of

0..

:I:

(!)

"C

c

<U

CD

:I:

(!)

U

:i

:I:

(!)

*Refer

.

Water Hardness

,

<4 grains

f

.

4-10 grains

>10 grains

Water Inspection

Hardness

<4 grains

4-10 grains

!

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

Semi-Ann ua/

Bi-monthly

to

GHMC

instruction manual for programming instructions.

Interval

Inspection

Semi-Annual

GHMC 100

5

to

10

10 to 14

14+

Interval

Annual

Bi-monthly

GHMC 200

•

·

•

- 16 -

Blowdown

15

to

19

19 to 23

23+

Blowdown

(located on the electrical panel

Potentiometer

All GHB and GHP

Between low & midpoint

Between midpoint and

Maximum

DRN1

Setting

GHMC 300

23 to 28

28 to 32

Setting

behind

the

locked door)

Models

maximum

GHMC 400

33 to 38

38 to 42

Due to the wide range

throughout North America it is important that the

A blowdown

f,

conditions. By water conditions we are referring to the hardness

hardness is measured

important foaming and contribute to scale buildup humidifier tank and float chamber. When excessive foaming occurs, available from NORTEC.

content

yourself' kits which can several companies that will perform the tests for a

reasonable price.

municipality for your water condition.

It is possible observation and guidelines in the tables above. Also, when high silica content has been identified, the humidifier tank and float chamber will require increased maintenance and the blowdown setting should be increased to maximum setting. silica content may determine the appropriate blowdown setting.

is

set according to the local water

of

the water supplied

to

test for silica content. Silicates may cause

an

optional foam separator

If

you are unaware of the hardness or silica

of

your water supply, there are many "do it

You can even contact your

to

reduce this setting according

of

water conditions found

to

the humidifier. The

in

grains per gallon. It

in

be

purchased, or there are

is

the

is

In

this case

also

<\ OUTDOOR ENCLOSURE HEATER

.)

Position around the heater at around changes the set-point by position can be obtained by turning the knob counter clockwise. The set-point position

#1

SETTING

on

the heater will maintain the air

60 deg.F. Each increment

an

additional 16°F. The off

is

at the 3 O'clock.

to

Prior to filling the unit, it that no dirt or dust has accumulated compartment. contaminants from being drawn into the combustion blower. All water, gas, electrical and venting connections must be properly completed and tested before commissioning the unit.

FILLING THE SYSTEM

Before the GH unit will initiate combustion it must

be

filled with water to the low level setting

controller. (Refer

level

with water, turn the gas supply off and switch the unit

on

at the power switch. The unit will fill automatically until the ignition module(s) until the fill sequence power and proceed with the ignition safety shut-off test.

TESTING THE IGNITION SAFETY SHUT-OFF

by conducting the

will begin. After three tries the ignition

The ignition system safety shut-off must

1.

With the gas supply off, turn power

2.

Blower pre-purges for NOTE: On mUlti-blower models, it necessary

If necessary, clean this area

low water level

will lock-out. Leave the unit switched

is

following method

to

wait for all blowers to cycle.

3. After seven seconds the gas valve

energized for four seconds, then de-energized. After three pre-purge) the unit goes into a safety lockout.

trials for ignition (complete with

is

necessary to ensure

in

the control

to

prevent

of

the water

to

water level control). To fill

is

reached and then trial for

on

complete. Then switch off the

be

tested

of

test:

on.

30

seconds .

is

MANUAL

B

Models

Manual rate adjustment for GHB units accomplished by rotating the output adjustment selector that locked door clockwise to increase output and counter clockwise to decrease output.

STEAM OUTPUT ADJUSTMENT

is

located on the switch panel behind the

panel. Rotate the knob labeled "Outpuf'

See specifications for output values.

GHMC DISPLAY OPERATION

Refer to the GHMC Display Unit Operating

Instructions, Form XX-274, for information programming and operating the display unit.

on

START UP PROCEDURE

Also see Startup Sheet

on

page 21.

- 17 -

4. Manually re-open the gas supply.

to

should flow

5.

To reset the system, momentarily shut off

power switch, then turn it back on again. After a pre-purge the igniter normal operating in

the IGNITION SEQUENCE.

the main burner. End of test.

will start to heat up and

cycle will occur

SAFETY INSTRUCTIONS

Refer to front cover and page 1 of this guide.

MAINTENANCE

Please also refer to Maintenance schedule on

page 23.

No

gas

as

described

DRAINING THE TANK

During extended periods of inactivity such

season or periods of very low demand, it

to

drain the water from the tank. models this and opening the the tank shipped with electric drain valves, simply switch the

to

unit

MC models can also automatically after being inactive for a specified time. Refer Instructions, Form #274. Ensure that valve and power demand.

is

accomplished by switching the power off

1" manual drain valve at the bottom

in

the control cabinet area. On MC models,

"Drain".

be

to

the GHMC Display Unit Operating

is

switched

on

again during periods

On

GHS and GHP

programmed

as

is

advisable

to

drain

is

closed

of

off

CLEANING THE STAINLESS STEEL TANK

& FLOAT CHAMBER

CAUTION: Water and scale may be hot enough to cause burns. Turn before cleaning.

The combustion chamber cleaning. The mineral buildup flakes off, due expansion and contraction and violent boiling action during on/off cycles, and settles

tank. A scale accumulation bottom of the tank will not affect operation unit.

off

humidifier and allow it

walls are usually self

to

the bottom of the

of

up

to

2" thick

of

on

the

to

the

GH

cool

of

Due

to

the presence the heat exchangers, do not use any harsh cleaning chemicals. Please consult chemicals.

with water and examine for leaks.

Inspect the drain and blowdown assembly for

scale build-up and if necessary remove them from the

humidifier for cleaning. becomes blocked, scale build-up accelerated and damage The drain may bottom. Consult

Reassemble the removed. Re-install tank and cabinet lid making sure tank cover gasket down knobs. If using a torque wrench do not exceed 10ft-lb. Re-connect

Cleaning removing the and using a

the floats, stem and chamber. Ensure that float operation before tightening screws

Once the lid has been replaced, fill the unit

and

blowdown valves

be

cleaned through their access ports

NORTEC for proper procedure.

is

the float chamber hold down screws

small brush

is

smooth and gasket

of

polymer gaskets around

NORTEC prior to using any

If the blowdown assembly

in

the tank will be

to

the humidifier could result.

on

the MC models

on

their

drain and blowdown if they were

intact.

all

Do

not over tighten hold

steam and condensate lines.

is

accomplished by

to

access the floats

to

gently clean the scale from

is

properly seated

on

float chamber.

COMBUSTION BLOWER

The combustion air blower motors are permanently maintenance.

lubricated and require no other

It

is recommended that the tank and float chamber

at

be cleaned optimum operation.

the frequency

setting usage (see the manual).

cabinet lid. Remove tank being careful Do not remove the heat exchangers without consulting NORTEC.

those used for gardening. Once loose scale removed, use a scraper such as a plastic windshield scraper combustion chamber walls. scraper that the tank. Once all large pieces of scale have been removed, vacuum the tank out with a shop vacuum, fill part way with water, and flush remaining sediment from the tank through the drain.

in

To clean tank, remove steam lines and remove

Scoop out loose scale with a small shovel such

least once every season to maintain

It may be necessary

of

cleaning or increase the blowdown

areas

of

hard water or prolonged annual

"Slowdown Setting section

Lid

is

held down by keyed lock at rear lip.

lid by removing hold down knobs or nuts

to

not damage the insulation or gasket.

to

remove scale adhering

will scratch the stainless steel surfaces

to

the tank or

DO

NOT use a metal

to

increase

of

this

is

as

of

BURNER

The burners

and operate environment, the burner(s} may require removal of or grease-laden dust periodically. This may achieved by removing the burner and applying pressurized air to the external surface Refer

to

the Servicing Section related to burner

removal. BURNER REMOVAUINSPECTION

1.

Shut off electrical power and gas supply appliance.

2.

Disconnect wiring flame sensor and remove. removal of these components.

3.

Remove blower. See Blower Removal Section.

4.

Remove (5) burner flange mounting bolts.

are

made

of

ceramic fabric material

in

the infrared mode. Depending

of

to

hot surface igniter and

See section

on

be

the material.

to

on

the

lint

the

- 18 -

n

5.

Gently remove the burner assembly from the

to

appliance being careful not burner material.

6.

To

reinstall, reverse above procedure and ensure that flange gasket a good seal

replace the gaskets.

7.

Always test for leaks after any service has been performed explosive gas mixture present downstream the combustion blower.

is

maintained. If necessary

on

the gas train

damage the

is

not damaged and

as

there

is

ADJUSTMENTS/REPLACEMENTS OF

COMPONENTS

an

of

Hot

Surface

NOTE: Replacement igniters must be supplied by NORTEC or damage

1.

2.

3.

4.

5.

Igniter

Shut off electrical power and appliance.

Disconnect wiring leads Remove nut holding igniter cylinder

flange and carefully remove igniter. Inspect igniter gasket and replace if

necessary. Reverse above procedure

Replacement

to

the unit may occur.

to

gas

supply to the

the igniter.

to

re-install.

to

burner

CONSULT FACTORY PRIOR TO THE

REPLACEMENT OF ANY COMPONENT.

DANGER - SHOCK HAZARD - Make sure electrical power to the appliance avoid potential serious injury or damage

components.

Valve Replacement

Gas

1.

j'"

,/

\

Shut off electrical power and gas supply appliance.

Remove front door and right side panel.

2. On units with multiple burners disconnect gas

3.

supply line from the Gas units with a single burner disconnect gas supply line from the gas valve.

Disconnect wiring connections

4.

Use (2) pipe wrenches

5.

connections between each gas valve and the inlet manifold mounted blower inlet.

6. On units with multiple burners remove gas

supply manifold with valves attached.

to

Disconnect valve supply manifold.

be

is

disconnected

to

Intake Manifold.

to

gas valve.

to

release the union

on

the combustion

replaced from the gas

to

the

On

CAUTION: brittle. Exercise extreme care assembly

Ignition

Transformer

Air

Module Replacement

1.

Shut off electrical power

2.

Remove access door.

3.

Disconnect wiring connections

labeling

4. Remove screws (2) holding module.

5.

Reverse above procedure

1.

Shut off electrical power

2.

Remove access door.

3.

Disconnect wiring connections from transformer leads labeling as required.

4.

Remove screws (2) holding transformer.

5.

Reverse above procedure

Switch

Silicon carbide igniter

to

avoid damage.

as

required.

Replacement

in

handling the

to

is

fragile and

the appliance.

to

the module

to

re-install.

the appliance.

to

re-install.

7.

Remove union and nipple assembly from valve that is being replaced and valve.

Reverse above procedure

8.

:J

Leak test the gas train before

9.

re-commissioning unit.

to

install

reinstall.

on

new

- 19 -

1.

Shut off electrical power

2.

Remove front panel.

3.

Remove wiring connections to switch.

4.

Remove screws (2) holding the switch.

5.

Remove pressure hose( proper location.

to

the appliance.

s)

from switch noting

6.

Reverse above procedure

Combustion

1.

Shut off electrical power appliance.

2.

Remove front door and right side panel.

3.

Disconnect electrical plug connection

blower motor.

4.

Disconnect the pressure hoses from the blower inlet.

5.

Use (2) pipe wrenches connection between the gas inlet manifold mounted blower inlet.

6.

Remove nuts blower.

7.

Remove blower assembly.

Air

Blower

(4)

to

re-install.

Replacement

and

gas supply

to

release

valve and the

on

the combustion

on

discharge outlet of

the

to

union

the

9.

Remove gas manifold by disconnecting the coupling bellow the gas valve.

10.

Remove exhaust manifold from GH200, 300, or GH400 only.

11.

Remove nuts holding the heat exchanger. And pull heat exchanger out. Do not remove the burners.

12.

Disconnect the wire harnesses from each burner, ignition module, air proving switch.

13.

Remove nuts which hold tank mount brackets

14.

Disconnect the left

end

tank brackets from the

frame.

15.

Carefully slide tank out the left end

of

casing.

16.

Reverse procedure

to

replace tank. Inspect heat exchanger gasket to ensure it is not damaged.

GH

the

8.

Remove (3) bolts

9.

Attach air intake assembly onto new

on

combustion air blower ensuring that the O-ring is properly seated.

10.

Reverse the above procedures new blower assembly.

11. Leak test the gas train before re-commissioning unit.

Tank

Replacement

1.

Drain water from unit. See section "Draining The Tank".

2.

Switch off power

to

front door and removable right

3.

Disconnect steam and condensate lines.

4.

Remove top cabinet panel with lock key and lift the door out of the overlapped edge.

5.

Remove tank

lid

by

air intake assembly.

to

install the

the unit and open right

panel.

unscrewing the knobs.

Heat Exchanger Replacement

1.

Drain water from unit. See section "Draining the Tank".

2.

Switch off power

to

the unit and open right

front door and removable right panel.

3.

Shut off gas supply

4.

Remove gas train

to

the unit.

by

breaking gas valve

union.

5.

Disconnect wire harness at blower, ignition module, air proving.

6.

Disconnect vent connection

7.

Remove exhaust manifold

8.

Remove heat exchanger nuts.

9.

Slide heat exchanger out.

10. Re-assemble

in

reverse order. Inspect gasket

to ensure that it is not damaged.

to

the unit.

on

GH2 or GH4.

6.

Remove left door/panel.

7.

Disconnect float chamber

union and

8.

Disconnect the blowdown/skimmer line (3/4"

releasing the hose clamp.

by

uncoupling the

copper) utilizing the union.

-

20-

SERVICING THE UNIT

~

. )

Caution:

appliance.

Caution:

when servicing controls. Wiring errors

improper and dangerous operation.

The combustion chamber, heat exchanger and flue baffles are all fabricated from stainless steel and do not require cleaning.

Disconnect power before servicing this Label

all

wires prior

to

disconnection

can

cause

!II.

I!

!i~i

Ii

Internal Control Failure

11··_·····_··_···_······_-_····

i Air Flow Fault

!I

Flame With

Error

__________________

__

·····················

No

Mode

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

Call For Heat I 2 Flashes

SERVICE

LEO

~------------------

Indication

Steady on

.

1 Flash

CHECKS

..

.i

Should the main burner

fail

to

light, or flame

is

not

detected during the first trial for ignition period, the gas

is

valve

de-energized and the control goes through

an

interpurge delay before another ignition attempt. The control will attempt two additional ignition trials before going into lockout. The valve relay will be

and

de-energized immediately,

the combustion blower

will be turned off.

FAULT CONDITIONS

This appliance ignition module which identifies a occurs.

Band P Models

Faults are indicated with a flashing LED P units. The LED's are located

and correspond to their respective from left

to

right looking from the bumer entry side.

Counting the number of flashes of the LED's and referring to the Fault Conditions given below can identify most ignition problems. Recovery from lockout requires resetting of the humidifier. Momentarily shut off the power switch, then turn

Me

MODELS

Faults are indicated with a fault message

of

display Operating explanation

MC models. Refer

Instructions" (Form XX-274) for

of requires resetting of the humidifier. This ach ieved by momentarily shutting off the power switch then turning it back on

the main MC control board mounted

Electrical

Swing Panel inside the electrical cabinet.

is

equipped with a self diagnostic

fault code when it

on

Band

on

the switch panel ign

ition modules

it

bact<

on

again.

on

the

to

"GHMC Display Unit

an

fault messages. Recovery from lockout

can

be

on,

or

by

pressing the reset button

on

the

Flame Sensor

current

Flame the flame from the sensor module must detect a minimum flame current

is

the current which passes through

to

ground. The ignition

of

0.7 microamps or a flame proving lockout will occur. To measure flame current, connect

FC+

the FC-

0.7 uA

read

terminals

or

higher. If meter reads below "0"

scale, meter leads

on

are

reversed. Disconnect power

an

DC micrometer to

the module. Meter should

on

and reconnect meter leads for proper polarity.

to

NOTE: Proper polarity of supply voltage

the unit

necessary for flame sensing to occur.

Igniter

the

Check

If the igniter

following test may

1.

Ensure that the power and gas is switched

is

suspected

be

of

being defective then

carried out;

before servicing.

2.

To

test the igniter, disconnect the igniter leads

from their terminal connections, one on the

ignition module the other

harness. Keep note

3.

Using a multimeter set the Ohm's scale and place one of the meter leads on one igniter wire ends and the other meter lead

the

end

of the other igniter wire.

4.

You should obtain a reading between 300

Ohm's. This indicates the igniter is okay,

is

part

of

where they attach.

the wire

of

the

50

and

on

otherwise it should be replaced.

Valve setting

Gas

The

gas

valves used

in

the GH series humidifier are negative-pressure-regulated valves. The valve setting listed relative constant.

on

the product rating plate

to

atmosphere - this setting will always remain In

the direct vent application, the actual

is

shown

manifold (outlet) pressure of each gas valve will vary depending

on

the vent length and

on

the firing rate.

is

off

-

21

-

The table below lists the outlet pressure

of

the gas valve under different conditions. This table should be used

as

a guide when servicing/troubleshooting the unit. The actual measured manifold pressure should fall within the range shown.

Maximum firing

rate

Minimum firing rate

Maximum Vent Length

(70

ft.

21m)

-0.62"

W.c.

-0.25"

W.c.

Minimum length

-0.40"

W.c.

-0.15" w.c.

Vent

..

-

22-

-~

...

/

PREVENTATIVE MAINTENANCE SCHEDULE

f

> /

• PARTS

"

..

.'

Ignitor Flame Sensor X

'.

,

Tank X

:

i Float Chamber

:

..

Fill Lines X Drain Lines

••

Gas Venting X

')

:

DAYS

MID

~S=.6.~nN

,

END OF PROCEDURE

~S=.6.~nN

~

X Check for continuity 50-300 ohms

Check that flame sensor

,

X

Clean sensor with fine steel wool.

Adjust blow down time when required. Check that scale has not accumulated

2".

above Clean tank when required. Drill out tank nipples when required.

X

•

X X

X

..

X

Ensure floats move freely.

Clean scale from chamber when required.

X

Inspect for leaks.

X Inspect for leaks at the drain pump, fillcup

and

the float chamber .

X

Inspect for leaks. Inspect

terminal cap

350-400 .

is

straight.

is

clear flue temp

Direct Vent

..

X

Inspect for leaks. Inspect intake terminal clear .

Gas Burner X Clean with compressed air from outside

matting. Remove from blower and expel dust.

...

>.

H/L Stack Sensor

: Drain Complete Unit

•

i

X

..

i

X

~

X X

Replace bumer gasket.

Visual check that sensor

Switch

to

drain

on

all units.

is

intact.

-

23-

Date:

______________

Reference

Order

#:

Job

Name:

____________

_________

Vent Can Be From The Top

Or

_

r:=======~=======r:==::;::::::j-

_

The 8ack (GH 100 only)

;;:1:'

~~ng

Water Input

Line

_

Model:

____________

System

ID

#:

___________

MECHANICAL Steam Lines instal/ed and sloped properly

Venting installed

Gas supply

Gas Pressure at Gas

Fill valve installed and has its own shut off valve 0

Drain

pi~ing

properly No dirt or Dust is accumulated

compartment (Clean if necessary)

properll

line connected and purged

installed with AIR GAP and sloped 0

<100ft equivalent length

Valve

in

the control 0

of

1

air

_

ELECTRICAL & CONTROLS

o

Primary Voltage (120 VAC) connected, unit grounded 0

Control ON/OFF Security loop installed a Modulating controls connected a

Blower Packs powered

Startup procedure:

1 Filling system Manually turn all Gas Valves

Tum

unit ON at the main power switch ... Unit will ... After 3 tries the ignition

Wait until fill sequence is completed Tum unit Manually tum all gas valve 2 T estjng the ignition safety Manually close Gas Supply Tum unit ... Blower will pre-purge for ...

On

... After 7 seconds the gas valve will energize for 4 seconds, then de-energize ....

. .. After 3 tries, the ignition module Manually re-open Gas

.... No gas should flow to the main burner ....

.... End

3 Normal operatjon Reset system by momentarily shutting back

... Igniter will start

fill automatically until low water float is reached and trial for ignition will begin ...

OFF at the main power switch

ON at the main power switch

multiple blower units, wait until all blowers have cycle ....

oftest..

..

ON

to

heat up and normal operation cycle will occur ...

to

the OFF position (red switch on Gas Valve)

module will lockout since gas valve is turned OFF ...

to

the ON position (red switch)

Shut-OFF

to

the unit.

30 seconds ....

will go into a safety lockout. ...

Supply

to

the unit.

OFF main power switch and switching

I========:::l:::==::=:l'-

by

independent supply

Gas Input

Line

Drain

, Steam line use 3ft above unit before sloping min 10° to

".-Ai5!z

~f

lIortec

WHEN

YOU

NEED

~iStribution

system.

HUMIDITY

-

START-UP AND INSPECTION

24-

TROUBLESHOOTING GUIDE

Symptom Causes / Service Checks

On-off Switch Energized, Humidistat calling for _ No power to appliance. Check circuit breaker. Check disconnect switch.

operation. Unit does not operate.

- Defective Transformer. Check secondary voltage. transformer if breaker is not blown.

- Check re-setable stack high

limit switch and reset if necessary.

If no 24 volts, replace

Unit energized/lgnition module okay. Blower NOT running.

to

Power on except humidity demand.

Pressure switch input okay but ignition after purge delay.

unit on, humidistat on, indicator lights

no

trial for

- Low voltage breaker blown. Check breaker (located on bottom of interface panel).

- Fault LED not operating. Loose connection at ignition module. Defective LED. Check wiring connections.

FC2

Ignition module locked out. Check LED diagnostic light MC display for

failure identification.

- Loose wire(s). Check wiring connection(s). No

-

- Defective LED. Check if properly seated. Replace if properly seated but

- Defective blower. Replace blower.

- 24VDC power supply defective

- Control signal miswired. Check signal.

- Low water level. Check water supply.

Bad control. Check LED for steady on or check

- Miswired. Check

- Check for change of state when unit is turned down.

If breaker blown, reset breaker.

on

ignition control module using multimeter.

See Fault Conditions for identification

call for humidity.

or

loose blower driver board. Check blower driver board for green

PSW terminal voltage.

Check for continuity between

or

fuse blown. Check fuse on power supply.

MC display

FC1

of

fault codes.

no

LED.

And

Valve activates. flashes.

Igniter on. No valve operation. LED displays 3

flashes

Valve activates. Ignition occurs, LED displays 3 - Defective flame sensor. Check flame current (see service checks). flashes.

Flame with no call for heat.

No

ignition. LED displays 3

- Defective hot surface ignitor. Check resistance (see service checks). no

- Gas valve off or

- Miswired ignitor. Check wiring.

- Bad control.

Valve wiring not connected. Connect.

Damaged valve coil. Replace valve Bad control. Check voltage between

-

S2 wire not connected or loose. Connect

- L 1 and neutral wires to unit reversed. Correct polarity.

Stuck valve. Shut off gas supply. Check LED for 2 flashes. Replace valve.

-

25-

gas supply. Turn on gas.

KeOla.ce.

MV1

& ground. Replace control.

N

Q')

(~

c::::;)

Q-----------

27

J

t

??

Nortec®

WHEN

YOU

NEED

HUMIDITY

24

REPLACEMENT

PARtS

GH Series

10

GH

SERIES REPLACEMENT PARTS

()

Item # Description

1

Knob, Tank

Tank

2

Gasket, Tank Lid

3

4 Gasket, Exhaust manifold

Exhaust Assembly

5

Thermocouple Assembly

6a

Sensor, Stack Hi-Limit Manual Reset

6b

Float Replacement Assembly GHB, GHP

7

Gasket, Float Chamber

8

i

I

9a Blowdown Assembly

I

I I

I

Valve, Mechancial Seal, Blowdown Assembly

9b

Valve Solenoid 2-way 24Vac SST

Plumbing Drain Assembly

10a

Lid

lid -Hold down

3/4"

01

(De-Ionized water) GHB, GHP

NPT, Brass GHMC

I I Valve, Mechancial Seal, 1" NPT, Brass

I

i

I

i

I

I I

I

:

!

I

25a

Plumbing Drain Assembly

10b

Valve Solenoid 2-way 24Vac SST GHMC 170-4207 170-4207 Float Chamber Body

11

Ignition Module, Main

12

Ignition Module, Auxiliary Switch, Air Proving sinqle can all models 170-3702 170-3702

13

Bracket, Ignition Control

14

Manifold, Gas Intake

15

Valve, Gas Negative-Regulated (-0.2"w.c.) all models

16

Blower 24V

17

Gasket, Burner/Blower

18

Sight Glass Replacement Kit

19

Sensor,

20

Igniter, Hot Surface Shielded

21

Gasket, Igniter

22

Burner Assembly

23

Gasket, Burner plate

24

Removeable Heat Exchanger

25

Seal Plate for GH 300 only (not shown) Gasket, Heat Exchanger

26

ITank Weld Assembl

27

dc

Flame Proving

(Shielded)

01

(Burner A

(all Burners)

(Burners

z

B,

C,

only)

D)

Type

Model

all models 170-8828 all models 170-5010 all models 170-8201 170-8210

models 170-8215 150-1653

all all models 170-5038 170-5044 170-5048

GHMC 170-3002 170-3002 170-3002

all models

GHMC 170-9609

all models 170-8207 170-8207 170-8207 170-8207

GHB, GHP

GHMC

GHMC GHMC

GHB, GHP

GHMC GHMC

GHB, GHP

GHMC

all models 170-5074 170-5074 170-5074 170-5074

GHB, GHP

GHMC

GHB, GHP

all models

all models 170-2104 170-2104 170-2104 all models all models all models

models 170-9601 170-9601

all all models 170-8219 170-8219 all models all models all models all

models

all models

all models 170-5051 170-5053

I

GH

100 GH 200

170-8828 170-5012 170-5014 170-5014

170-3202 170-9608

170-1820 170-1840 170-4214 170-1821 170-1827 170-1827 170-4207 170-4207 170-1801 170-1801 170-1808

170-4213 170-4213 170-1802 170-1802 170-'1804

170-2501 170-2501 170-2502 170-2502

170-3202 170-9608 170-9609 170-9609 170-9609

170-1822 170-1822 170-1840 170-1840 170-1840 170-4214 170-4214 170-4214 170-1823

170-1808 170-1808 170-1808

170-1804 170-1804 170-1804

nla 170-2502

170-5861 170-5861

nfa

170-2201 170-2201

170-8208 170-8208 170-8208 170-9607 170-9607 170-2450

170-5083 170-8206 170-8206 170-8206 170-8206 170-5015 170-5015 170-5015 170-5015

n/a

170-8220 170-8220

I

170-1292 150-2017 170-1293

170-2450

170-5083

nJa

I I I

GH 300 GH 400

170-8828 170-8828

170-8214 170-8214 150-1654 150-1654

170-3202 170-9608

170-1823 170-1823 170-1827 170-4207 170-4207 170-1801 170-1801

1704-2163 1704-2163

170-1802 170-1802

170-4207 170-4207

170-2501 170-2501

170-2502 170-2502 170-2502 170-2502 170-3702, 170-5861 170-5861

170-2201 170-2201

170-9607 170-9607 170-2450 170-2450 170-9601 170-9601 170-8219 170-8219

170-5083 170-5083

150-2002 170-8220 170-8220 170-5055

170-5048 170-3002 170-3202 170-9608

170-1822

170-1827

170-3702

170-2104 170-8208

nfa

170-5055

I

- 27 -

N

co

\~

~

-

...

~.~-,

....

:

,,~

20

~.21·.d

Nrftrte"®

J4(eP

VI

"

WHEN

YOU

NEED

HUMIDITY

'9\:

REPLACEMENT PARTS

GH Series

16

l)-

'-.

Item

#

1 Cabinet top door

Lock, c/w Keys

2

Cabinet top panel

3

Cabinet front

4

Cabinet front door

5

Cabinet door bracket front

6

Cabinet left

7

Frame

8

Frame left rear

9 10 11 12 13 Cabinet right door 14

15a 15b

16

17 18 19 20 21

22

23a

23b

24

25

26a

26b

27

Frame right front Cabinet left rear panel Frame right rear

Valve, Dual Fill Bracket, Stiffening/Mounting Bracket,

Cabinet right rear panel Cabinet right base Cabinet left base

Leg-Foot Assemblv Electrical Component panel Controller Base Controller Blower Driver Interface Panel Assemblv Complete Electrical Potentiometer Potentiometer Lamp green Lamp amber

Switch, On/Off LED (Burner) Replacement Assembly LEO (Stack) Interface Panel Assemblv Complete Electrical I nterface Panel PCB Switch On/Off/Drain Switch, Lamp - Green

Lamp Transformer 120/24 Transformer 120/24 75VA

Timer

Relay DPDT 24V Relay 4PDT 24V latch Power

door

left front

WaH

Base

Interface panel

Replacement Assembly

Keypad/Display

Lockout/Run

Red

0.5-10 min D.on break 170-3102 170-3102

Supply 24VDC

GH

SERIES REPLACEMENT PARTS

Description

panel

(not shown)

10.0 K ohm (for Output) GHB

1.0 M ohm (for Blowdown)

40VA

Model

all models all

models 185-3104

all models 170-7104 170-7204

models 170-7101 170-7101

all all models all models 170-7131 all

models all models 170-7141 all models 170-7143 170-7143 all models all models all models 170-7144 all models all

models 170-4231 170-4232 models

all all models all models all models

models 170-7103 170-7203

all all models

models

all

GHB, GHP

GHMC

models

all

GHB, GHP GHB, GHP

GHB, GHP GHB. GHP GHB, GHP GHB, GHP GHB, GHP GHB,GHP

GHMC GHMC GHMC GHMC GHMC GHMC GHMC

GHB, GHP

GHMC

GHB, GHP GHB. GHP

all models

Type

GH

100

170-7122 170-7222

170-7124 170-7124

170-7121'

170-7142 170-7102

170-7123

170-7133 170-7233 170-7134 170-7105 170-7106 170-7206

170-8890 170-7996 170-7996 170-3041 170-3056 170-3600 170-3604 170-3604 170-1313 170-1322 170-7990 170-3952 170-3950 170-3950 132-3096 132-3098 132-3098

132-3097 170-9604 170-9605 170-1354 170-1354 170-7993 170-7993 170-3606 145-3001 145-3001 147-3010 147-3010 132-3096 145-3095 170-3120 170-3120 170-3121 170-3121

145-3020

n/a

170-3602 170-3650

GH 200

185-3104

170-7131 170-7221 170-7141

170-7242 170-7102 170-7144 170-7223

nla

170-7205

150-1703

170-3600

170-7991 170-7992 170-3952 170-3952 170-3952

132-3096

132-3097 170-9604 170-9605

170-3606

132-3096 145-3095

145-3020

n/a

GH 300 170-7422 185-3104 170-7404 170-7404 170-7101 170-7101 170-7124 170-7131 170-7131 170-7421 170-7141 170-7141 170-7143 170-7143

170-7442 170-7442 170-7102 170-7102

170-7144

170-7423 170-7423 170-4234 170-4234 170-7233 170-7233

n/a 170-7205 170-7406 170-7406 170-7403 170-7403 150-1703 170-7996 170-3081 170-3600

170-3604 170-3604

170-1342 170-1342

170-3950 170-3950 132-3096 132-3096 132-3098 132-3098 132-3097 132-3097 170-9604 170-9604 170-9605 170-9605 170-1354 170-1354 170-7993 170-3606 170-3606 145-3001

147-3010 132-3096 132-3096 145-3095 170-3120 170-3121 170-3121 170-3102 145-3020 145-3020 149-3005 170-3655

GH 400 170-7422 185-3104

170-7124

170-7421

170-7144

nia

170-7205

150-1703 170-7996 170-3081 170-3600

170-7992

170-7993

145-3001 147-3010

145-3095

170-3120

170-3102

149-3005 170-3655

-

29-

w

o

(,

GH STANDS

SHOP DRAWING

LOCK WASHER 3/8"

ALL ABOVE TYPICAL

(X

24)

j"7",1I1ortec

WHEN

YOU

NEED

HUMIDITY

T"

GH

100

GH

200

GH

3001400

H

~L~

MODEL

DIMENSION

L W H

in

(em)

In

(em)

in

(em)

12.6

(32)

26.4

(67)

30.0

(77)

20.3

(52)

23.6

(61)

30.0

(77)

36.7

(94)

23.6

(61)

30.0(77)

GH STANDS

Assembly

November 6,

2000

/

w

~

5~

) )

,.-'"

~.

A

..

1

Suggested vent

I.

II 7 installations

(by others)

6 I

••

1

I-

...

1 12

.

----

58 1/2

-r

-3/4

-r

~

U]

"

,lJyro~t~;S~~d

Frontal Clearance

(min

36"(92cm»

Front

View

drain, fill, and gas

I connections

(by others)

72

~~

Nft,""e

ll

®

jJ

51'

UJ

Ij

-..

WHEN

YOU

NEED

HUMIDITY

o

Side Clearance

(min

42"(107cm))

~J

NOTES:

1.

See

suggested

mounting

location

of

vent, fill,

drain,

and

gas

lines on drawing. Connections and

materials for

connections

to be

made

by others at

site (refer to the

GH

installation manual).

2.

120V

connection

for

exhaust

fan to be

made

at

site

by others.

3.

See

GH

Shop

Drawings

for

dimensions

locating

vent,

fill, drain, steam,

and

gas

connections.

4.

As

a standard the

GH

unit is factory

mounted

inside the enclosure.

5. Steam lines should be routed through the

back

or

sides

of

the enclosure.

6. Insulate

and

minimze

steam run length to

reduce

steam

losses.

7.

If

freezing conditions occur, enclosure should

be

used in conjunction with freeze proction feature

and

back

up

heater. All lines should also

be

heat

traced

up

to the unit.

82

Suggested vent installations (by others)

PART NO. DESCRIPTION

1502024

Enclosure -

GH

300/400

1502025 Enclosure - GH200 1502026

Enclosure -

GH 1 00

DIMA

WEIGHT

46.25 320 LB

27.25

280

LB

27.25 280 LB

GH

ENCLOSURE Physical Data November 13th,

2000

VJ

N

(

OPTIONAL

HEATER INSTALLATION

MOUNTING STUD IS LOCATED ON THE

ENCLOSURE'S MAIN BEAM

,.o.!'

:~

Nortec®

4

¢?

r

WHEN

YOU

NEED

HUMIDITY

RUBBER GASKET

DETAIL A

INSERT

RUBBER

GASKET

PROVIDED

ONTO

MOUNTING

STUD

THEN

INSTALL

THE

HEATER

THROUGH

THE

HOLE

IN

THE

HANDLE,

PLACE

THE

WASHER

AND

SECURE

INSTALLATION

WITH

THE

NUT.

GH

ECLOSURE

Heater Installation instructions DWG. # 1502303.

",

n

. I

DIRECT VENT

1

5

3

4

,J

Item

1

4

5

#

Description

Adapter,

Gasket,

Hose,

Air

Clamp,

Blower

adapter

Flexible

Manifold

Gear

2

intake

Connector

GH100

150-1635

150-2164

150-2148

150-2030 150-2029

132-5009

GH200

150-1635

150-2164

150-2148

132-5009

Nortec

GH300

i 150-1635

150-2164

150-2148

150-2320

: 132-5009

GH400

150-1635

150-2164

150-2148

150-1634

132·5009

-

33 -

Field wiring for GHB ON/OFF

By

others

ON/OFF

i

.-::~J-'-"-"-""'.-L!--'/~'-"""---'-""

ON/OFF

i

~//!

I------t-e'

:._

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

.+

in

_l

series

.

Controls

series

Controls

...

..

../

_____

0-10

V

de

Modulating

_/

e·

._

........ .

Wall

Humidistat

Or

Duct

By

Others

'

1-,6

,r

.2;;1

"1I,.el'l1}

IWul

WHEN

YOU

II

NEED

-."

HUMIDITY

-

34-

GH

SIP Wiring Diagram

GH

SERIES

EXTERNAL CONTROLS WIRING CONNECTIONS

LOW VOLTAGE

TERMINAL STRIP

NOTE: This is a generic wiring diagram only. For specific wiring instructions, it

to the wiring diagram which is

Security Loop

24Vac

Other On / Off Device

Blower Pack

High Limit Humidistat

WARNING:

in

accordance supplied damage void

supplied with each unit.

Failure

wi

th

with

the

unit

the

electron

the

unit

warranty.

Modulation

Signal

Input

to

the

could

ics.

wire

the

wiring

permanently

Such

Modulation

Signal

Input

controller

diagram

errors

wi

11

Peripheral Humidifier

Unit Operation

(BMS Interface)

0-

10Vdc

+5 Vdc

Supply

0-

Signal

is

necessary to refer

Interface

10 Vdc

Air Proving Switch

On/Off Control

Humidistat

EXTE

RNAL

.---I---r--.l..-.y--.,...--a---r-~.,-I---,.....

"An

(GHP/MC)

INTERNAL /

NOTE: If no On/Off Control is used then a field jumper must be connected across terminals 1 and 2 for the humidifier to operate.

in

order

j ;flloltec

WHEN

YOU

NEED

HUMIDITY

"8"

(MC Only)

.

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

718[9

.... · ........ · ..

·3.···

....

••·

....

····;··

INPUTS

----

I I

MC

_.

__

..........

_.....

1

10111'12,-1

....

··..,.·

..

·i.

..

.... · .. · ..

·i

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

r

I I

l.

OUTPUTS

I

Models Only

GH SERIES EXTERNAL CONTROLS WIRING CONNECTIONS LOW VOLTAGE

Diagram No. GHX3001 Rev.A Nov.

TERMINAL STRIP

........•......

........

EXTE R NAL

---

;.

................ ; INTERNAL

....

6,1998

-

35-

VENTING MANUFACTURER

Z-FLEX

Bedford,

20 Commerce Park North

03110-6911 Telephone:(603)669-5136 Telephone:(800)654-5600(US ONLY)

Fax:(603)669-0309

NH

UNI-CHEM HOSE

Charlotte, NC

222 Meecham Street 28203 Telephone : (704 )335-0099 Tetephone:(800)778-3818(US ONLY) Fax:(704

)335-7268

U-NOVA INDUSTRIES INC.

W.

Berlin, NJ

1024 Industrial Drive. 08091 Telephone:( 609 )768-227 5 Telephone:(800)225-0215(US) Fax:(609)768-2385

FLEXMASTER CANADA LIMITED

Calgary, ALTA

208-39TH Avenue NE T2E 2M5 Telephone:(403)277-3115 Fax:(403)276-1309

FLEXMASTER CANADA LIMITED

Etobicoke,

452 Attwell Drive M9W Telephone:(416)679-0045 Fax:(416)679-0051

ON

5C3

FLEXMASTER CANADA LIMITED HEAD

Richmond

20 West Pearce Street L4B 1E3 Telephone:(905)731-9411 Fax:(905)731-7086

OFFICE

Hill,

ON

FLEXMASTER CANADA LIMITED

Delta, BC

7350 - 72ND Street #124

V4G 1H9

Telephone: Fax:(604 )940-6402

NOTE: Venting to be used with Direct Vent units.

(604 )940-6401

FLEXMASTER CANADA LIMITED

Point

Claire,

158 Brunswick Blvd. H9R 5P9

Telephone:(514 )697

Fax:(514 )697 -3767

-

36-

PQ

-3701

LIMITED WARRANTY

NORTEC INDUSTRIES INCORPORATED and/or NORTEC AIR CONDITIONING INDUSTRIES LIMITED date

warranted, are free from defects

deterioration, or suitability

regulations.

parts prepaid by the customer. Parts used for repairs are warranted for the balance of the term on the original humidifier or

(hereinafter collectively referred

of

shipment, that THE COMPANY's manufactured and assembled products, not otherwise expressly

in

of

substituted materials used

COMPANY's obligations and liabilities under this warranty are limited to furnishing replacement

THE

to

the customer, F.O.B. THE COMPANY's factory, providing the defective part(s)

90

days, whichever

to

as THE COMPANY), warrant for a period

material and workmanship. No warranty

as

a result of compliance with government

is

longer.

of

two years from

is

made against corrosion,

is

returned freight

of

the warranty

The warranties set forth herein are

liability whatsoever shall be attached to THE

then said liability

in

writing, signed by

be

THE COMPANY's limited warranty humidistats, pumps, etc. original shipment of humidifier.

COMPANY makes no warranty and assumes no liability unless the equipment

THE strict accordance with a copy

by a contractor approved by THE COMPANY

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 equipment.

COMPANY retains the right to change the design, specification and performance criteria

THE

products without notice or obligation.

shall be limited to the original purchase price for the product. Any further warranty must

an

officer of THE COMPANY.

is

limited

of

the catalog and installation manual

in

lieu

on

accessories, not of NORTEC's manufacture, such as controls,

to

the warranty

of

all

other warranties expressed or implied by law. No

COMPANY until said products have been paid for

of

the original equipment manufacturer from date of

is

installed

in

to

install such equipment.

effect at the date

of

purchase

in

full and

of

the

of

in

and

its

ortec®

• SERIES I

NORTEC INDUSTRIES INC.

Box 698

P.O.

826 Proctor Avenue

Ogdensburg,

Website: www.humidity.com

NY 13669

NORTEC AIR CONDITIONING

INDUSTRIES

2740 Fenton Road

Ottawa,

E-mail: sales@humidity.com

A WMH COMPANY

ON

LTD.

K1T 3T7