Uni-pak Gh series Instruction manual

Uni-Pak

LOW

PROFILEHEATERS

Certified

for

Natural

& LP

Gases

Installation,

Operation,

Maintenance

Manual

GH

& DGH

Series

WARNING

If

the

information

in

theseinstructions

arenot

followed

exactly

a

fire

or

explosion

may

result,causing

property

damage,personal

injury

or

death.

Code

compliance

isthe

soleresponsibility

of

the

installer.

IfYou

Smell

Gas!

Do

nottryto

light

any

appliance.

Do

not

touch

any

electricalswitch.

Do

notuseany

phone

in

your

building.

Immediately

call

your

gas

supplier

from

a

neighbor's

phone.

If

you

cannotreach

your

gas

supplier

call

the

firedepartment.

ETL

LISTED

,„.

CONFORMS

TO

lntertet

ANSISTDZ83.8

4004374CERTIFIED

TO

CSASTD2.6

CAUTION

Do

not

storegasolineflammable

liquids

or

vapors

inthe

vicinity

of

this

orany

otherfuel

burningappliance.

Installation

and

servicemust

be

performed

bya

qualified

installer,serviceagency

orthegas

supplier

Installer

Affix

thismanualadjacent

tothe

heater!

Inform

and

demonstrate

the

correct

operation

and

maintenance

ofthe

heater.

Check

polarity

of

electrical

outlet

if

heaterdoes

not

stay

tit!

UNPACKING AND INSPECTION

1.

Examine

unit

as

received for

any

damages.

If

any

damage

is

found,

proper notation

should

be

made

on

the

carTier's

freight bill. Claims

should

be

made at

once.

2.

If

any

parts

are

missing, claims of

shortage

should

made

to

the

manu-

facturer within five

(5)

days.

3.

Check

rating

plate for correct type ofgas

and

input.

4.

Verify that

the

electrical

rating

shown

on

the rating plate will meet available power

supply

at

the

point of installation.

GENERAL

When consulting

codes

orstandards

referenced

in

this

manual,

consult

the

most

recent edition ofthe

code

or standard.

Installation shall conform with local codes

or,

in

the

absence

of local codes, with

the

National

Fuel

Gas

Code,

ANSI

Z223.1

or

the CAN/CGA 8149 Installation

Codes

(latest editions).

This appliance is a gas-fired power vented

unit heaterwith propeller-type

fan,

designed

for

suspended

mounting

in

commercial,

industrial

and

residential buildings.

The

unit

heater

is

completely assembled

and

wired.

Only

the

usual

mounting

brackets,

gas,

electric

and

flue connections'

are

needed

to

.

pU!

h~~t~ril1t<?

9P~~ation~

_lJ!~

~l'1it

h~~ter

.is

certified

by

the

Canadian

Standard

Association

in

accordance with

the

American National Standard/Canadian

Gas

Association

Standard

for

Gas

Unit Heaters

and

Gas-Fired

Duct

Furnaces,

ANSI

Z83.8/CGA

2_6

cmd

Z83.8a1CGA

2.6a for

use

with natural or

LP

gases

and

lAS

U.

S.,

Requirement

No.

10-96 for Unit Heaters For

Residential

Use.

WARNINGS

Should

over

heating

occur,

or

the

gas

supply fail

to

shutoff,

shutoff

the

manual

gas

valve to

the

appliance before

shutting

off

trte

electrical

supply.

When replacing

an

eXisting

heater, it

may

be

necessa'ry

to

re-size

the

venting

system.

improperly

sized

venting

system

can

result

in

vent

gas

leakage or conden-

sation

formation.

Refer to the National

Fuel

Gas

Code

ANSI

Z223.1

or

CAN/CGA 8 149.1 or .2 latest edition.

Failure to follow

these

instructions

may

result

in

serious

injUry

or

death

..

This unit heater

comes

equipped

with a

power

exhaust

system.

Failure

to

follow

these instructions may result

in

possible

serious

injUry

or

even

death.

PRECAUTIONS

1.

Do

read

these

instructions for

safe,

efficient

and

trouble-free operation.

2.

Do

disconnect'electrical power supply

before

making

any

wiring connections.

Unit

must

be

wired per

the

wiring

diagram

furnished

with this

heater.

3.

Do

tum off

all

gas

before installing unit

heater(s).

4.

Do

make

sure

that gas pressure never

exceeds

14"

w.C.

(3.5

kPa).

5.

Do

check

ga~

i!1l~tsl,lp..P!y_pressure

immediately upstream of combination

control. The inlet supply pressure

should

measure

6-7"

w.c.

(1.5-1.7kPa) for

natural

gas

or 12-14"

w.c.

(3-3.5kPa)

on

LP

gases.

6.

Do

vent

unit(s) to

the

outside.

1

7.

Do

maintain

a

rear

c~earanc.e

of

18"

(45.7cm)

or

6"

(15.2cm)

beyond

motor

at

rear of

unit

orwhichever is greater

and

access

side provide ample airfor

combustion

and

fan

operation.

8.

Do

maintain

minimum

clearances

frqm

combustible material

based

on

a 160°F

(70°C) swface temperature.

9.

Do

consult

piping, electrical

and

venting

sections

in

this

manual

before

finalizing

installation.

10.

Do

keep

all literature

with

this

unit

heater.

11.

Do

not

install

in

potentially explosive or

flammable

atmosphere

laden

with grain

dust,

sawdust,

or

other air-borne

materials. Ifthis installation application

is

used,

install heater

in

a

separate

room

with dueling

making

sure

that a

back

flow

prevention

dampers

are

used

in

the

dust-laden

room.

12.

Do

not

install heaters

where

there

is

high

humidity orsalt water

atmospheres.

This will

cause

corrosion resulting

in

reduction

ofthe

normal

life of

heater.

13.

Do

not

locate

in

areas

where

there

is a

high

concentration of chlorinated, halo-

genated

or acid

vapors

in

the

atmos-

phere,

thiswill

reduce

heat

exchangers

life.

14.

Do

not

install

in

tightly

sealed

rooms

or

small

compartments

(confined

spaces)

- -

without-

provisiens

-for

aaequate-oom--

bustion

air

and

venting.

15.

DO

not

install heater

out~oors.

16.

Do

not

install heater closer to

any

combustible materialsthan

what

the

heater

was

tested

and

listed.

17.

Do

not

block

air

intake

and

discharge of

the unit

heater.

18.

Do

not

attach

duct

work,

air filters or

plastic

vent

pipe

t01his

unit

heater.

19.

Do

not

install

below

7'(2.1m)

measured

from

bottom

of heaterto the floor

in

commercial

applications

and

5'

(1.5m)

for

residential

applications.

20.

Do

not

use

this appliance ifit

has

been

under

water.

Immediately call a

qualified

service

technician to inspect

the

appliance

and

replace

any

damage

equipment

that

has

been

underwater.

LOCATION

In

locating

units,

consideration

should

be

given

to

the

space

heating

requirements,

availability of

gas

and

prOXimity

to

vent

location.

The

direction of

the

air stream

should

be

pointed

toward

the

area

of

greatest

heat

loss.

Multiple units should

be

located

so

that

the

air streams

set

up

a

circulatory

movement

within

the

area

being

heated.

Adjustable

louvers

are

factory

installed

on

front

of

the

heater.

Do

not

install

unit

heater(s)

in

a confined

space

without

providing

wall openings to

and

from

this

space.

Mounting

height

at

which

heaters

are

to

be

installed

is

critical.

The

critical

height

is

from

floorto

the

bottom of

the

unit(s)

where

heaterwill

not

deliverthe

required

amount

of

heated

airto the floor.

Unitheaters installed in Aircraft

Hangers, Parking Structures and Repair

Garages

as

applicable, must

be

installed

in accordance with the Standard on

Aircraft Hangers, ANSIINFPA 409,

the

-StandarcHor-Parking-Structures. -

ANSI/NFPA

88A

and the Standard

for

Repair Garages,ANSI/NFPA SSB, and

with the

CAN1-B149

codes

-latest

editions.

WARNING:

Gas-fired appliances

are

not

designed

for

use

in

hazardous

atmospheres

containing

chlorinated or

halogenated

hydrocarbons.

2

SUSPENSION

Unit(s)

must

be

supported

from

the

structural

part

ofthe building.

Do

not

support

from

ceiling boards, roof panels or

plaster ceiiing.

Each

unit

is provided with two

(2)

angle

brackets for mounting

purposes.

See

figure

1for atypical suspension ofthe heater.

The heater

must

be

installed

in

a level

horizontal position

so

that

the

heater will

operate

property.

See

Figures 1

and

1A

on

page

4.

Mounting

brackets must be installed first

before lifting heater. Decide ifthe unit

is

to

be

installed

as

received; that

is

with

the

controls

on

the left side

when

looking

at

the

front of

the

appliance.

Remove

and

retain the (3)

screws

along

the

top

edge

of both the front

and

back

ofunit.

Make

sure

the

screws line

up

on

the

mounting brackets with

the

holes

along

the

front

and

back

top edges. Secure

(1)

mounting

bracket to front of

the

appliance

with

the

retained screw.

Secure

the

other

mounting

bracket to the

back

side

in

the

same

way

that

the

front

one

was

done.

To

suspend

the

heater,

fasten

the

mounting

brackets to the ceiling joist ortruss,

using

1/4"

(.6cm) screws with

1/2"

(1.3em)

washers.

The

mounting brackets

are

slotted

to accommodate joists

on

16"

-

24"

(4.9-

7.3m)

centers.

This heater may also

be

hung

using

same

mounting

brackets along with threaded

rods.

Attach threaded

rod

to the heater mounting

brackets, fastening with atop

and

bottom

nut.

Next,

drill holes into a steel

channel

or angle

iron

at

the

same

centerline dimensions

chosen

for

the

heater

being

installed.

The

steel channels or angle

iron

pieces

must

span

and

then

be

fastened to

the

appropriate structural

members.

Cut

the

rods

to

the

desired

length,

push

through

holes that

were

made

before

and

secure

with

washers

and

lock

nuts,

lock

washers

and

nuts,

ora

double

nut

arrangement

similarity

used

on

the

unit heater

mounting

brackets.

This heater

also

can

be

installed

on

a

shelf.

The

mounting

brackets

need

to

be

attached

as

previously indicated.

However,

for shelf

mounting

the

brackets

will

have

to

be

secured

to

the

bottom

of

the

unit.

The

brackets

are

then

attach

using

similar

screws (1/4"

(.6em)

screws with 1/2" (1.3cm)

washers)

as

overhead

joist ortruss

mounting.

Be

sure

all clearances to

combustible materials

are

met.

These

unit

heaters

may

also

be turned 1800

around

from

the

way

they

were

produced at

the

factory. Follow these steps forright side

''turned

over"

installation

(See

figure 1B

on

page

4):

1.

Sides

become

opposite butthe front

and

back

remain

in

the

same

relative

position.

Bottom-panel

now

becomes

the

top

and

vise-versa.

2.

Remove

access

panel

and

rotate

180

0,

reattach

it

to

the

unit.

This

make

sure

that all labels

may

be

read.

3.

Remove

the

louvers

and

springs.

Tum

them

over

so

that

the

air is deflected

opposite to

what

it was originally.

Replace

louvers

and

springs.

Adjust

so

that they

are

open

and

positioned to

direct

heated

airto the floor.

COMBUSTION AIR

Adequate

provisions of combustion air

must

be

provided

for this unit

heater.

Since

todays

buildings

and

homes

are more

tightly

build

so

that less air infiltrates from

the

outside, it is

very

important that all

heating

eqUipment

have

adequate

combustion

air.

3

Figure 1

Unit Heater Rear View

Mounting Brackets

Fingerproof Fanguard Fan Motor

Access Panel with

Lighting IOperating

Gas Pipe Hole

Figure 1A Instructions

[Gas Pipe Field Supplied)

Unit heater In Standard

Mounting Configuration

(from factory this orlentation-brackests not attached)

Vent Pipe Connection

FIgure

18

.Unlt Heater Turned 1800

(~c_c~s~

~~n~1

~~d_

Hei!ted

_Air

O~tl~tC_h!lng~

Sides)

4

The

requirements

for

c.Qmbustion

and

ventilation air

depends

on

how

unit

will

be

installed.

That

is either

in

confined

or

unconfined

spaces.

In

both

cases

enough

incoming

air is

required

to eliminate negative

pressure.

Confined

or

Unconfined Space

The

National

Fuel

Gas

Code

defines

an

"unconfined

space"

as

a

space

whose

volume

is

greater

than

50

cubic feet per

1000 BtulHr

input

of

the

installed

appliance(s}. A confined

space

is 50 cubic

feet

or

less

per 1000 BtulHr

input

of

the

installed appliance(

s).

These

unit

heaters

are

not

recommended

for

installation

in

residential

confined

spaces.

This is

due

to

the

fact

at

some

point

in

time

these

air

openings

may

become

blocked

or

eliminated

by

the

owner.

Ifthey

are

to be

installed

in

residential

confined

spaces,

then

the

owner

must

strictly

adhere

to the

guidelines detailed

in

the National

fuel

Gas

code

ANSI

2223.1 orCAN/CGA

8149

Installation

c.orle,

latest edition.

These

unit

heaters

may

be installed

in

confined

spaces

for commercial! industrial

installation

as

long

as

these are

two

permanent

openings located

one

at

the

top

and

one

at

the

bottom.

EacH

opening

shall

have

a

free

area

not

less

than

one

square

inch

(6.4cm2)

per

1,000 BtulHr oftotal

input

rating

of all units

in

the confined space

and

communicating

with interior

areas

having

adequate

infiltration

from

the outside.

-WARNrNG:-ComoustTonaif

opening-s-rnust

be

kept

free of obstructions.

Any

obstructions will

cause

improper burner

operation

and

may

result

in

afire

hazard

or

carbon

monoxide

injUry.

VENTING

Venting

installations

shall

be

in

accordance

with

Part

7,

Venting

of

Equipment,

of

the

National fuel

Gas

Code,

ANSI

Z223.1

and

applicable provisions of

CAN/CGA

8149

Installation

Codes

(latest editions),

and

any

applicable

proVisions

of

local

building

c.odes.

This unit heater series

is

equipped

with

power

exhaust

system.

Do

not

use

any

additional

power

exhaust

systems

or

vent

dampers.

If

any

are

used

orfailure to follow

the

instructions

provided

may

result

in

serious

injUry

or

death.

A.) Use the

following

steps

to

ensure

venting

system

is

adequately sized:

1.

Make

sure

that

all

unused

openings

have

been

sealed.

2.

The

venting

system

must

be

inspected

for proper

size

and

required

horizontal

pitch.

Verify

there

is

no

blockage

or

restrictions

leakage,

corrosion

orother

deficiencies

that

may

lead

to

unsafe

conditions.

3.

Close all building

doors,

windows,

doors

leading

between

the

space

in

which

appliance(s)

are

located

and

other

spaces

of

the

building.

Also

tum

on

all

exhaust

fans

sothaUhe¥

aH-operate

at

there

maximum

speeds.

However,

do

not

run

summer

exhaust

fans

and

make

sure

all fireplace

dampers

are

closed.

4. Start

up

unit

heater(s)

per

the

lighting in-

structions

provided

and

adjust

thermostat

so

that appliance will

operate

con-

tinuously.

5. With

the

unit

in

operation,

check

all draft

hood

equipped

appliances after 5

minutes for

any

spillage

by

using

either a

'burning

malCff6rcandle. -

,-

- -

6.

Once

each

appliance,

which

has

been

connected

to

the

venting

system,

properly

vents

when

tested

from

the

method

outlined

above,

all

doors,

windows,

exhaust

fans,

fireplace

dampers

and

other

gas-burning

appliances

may

be

returned

to their

earlier conditions of

use.

5

7.

Ifimproperventing

'is

observed

during

any of

the

above tests,

the

venting

system

must

be

corrected.

8.

Should

the

venting

system

need to be

revised, it

must

confoon

with

the National

Fuel

Gas

Code

ANSI

Z223.1

or

CAN/

CGA B149lnstallation Codes-latest

edition.

Should

the

venting~ystem

need

revising, it

must

approach minimum

sizing

as

determined

by

the appropriate

table

in

Appendix

"G"

ofthe Nationar

Fuel

Gas

Code

ANSI

Z223.1.

TABLE 1

ANSI UNITHEATER VENTING CRITERIA

category

Desct1pC1on

Yentlng CrflerIa

I Negative vent pr8llSlft

Non-e:Olldellsirlg

Folow

slandani

venting

criteria

II

Negative

ventpresaJl'e

Condensing Condensate

must

bedrained

III

Positive

ventpressure

Non-c:ondensing

Vent

must

be gas

tight

IV

Positive

ventpressure

Condensing

--.'

Vent must

be

Ilquid

and gas

tight.

Condensate

must

be

drained

-

Note: A

vent

Ia

ttle

vet1lcaI

passageway to

convey

flue

gil$8S

from

to ttle

0U1SicIe

atmosphere.

Avent

connedDr

pipe

connects

the

units

ouUet

to a

vent

or

chimney.

\lent

connectors

serving a

category

I

~

shaD

notbe

connected

Into

any

portion

of

mechanical

draft

systems

operating

under

positive pressure.

All verticallY vented unit heaters are

category Iventing

and

all horizontally

yented

unit heaters

are

category

III

venting.

Use

Table I

in

determiningthe category

reqUirements.

category

III

vent. The minimum vent

length forthis system is 4' (1.2m)

and the maximum length is 8'

(204m).

A Gary steel #1092

or

Breident

Adams A1092, Type L vent caps

may

be

used.

b.) All commercial and industrial

hcri1OntaUyfvern~d-heaters

-may

use

eithercertified category III venting

system or single wall galvanized

or

stainless steel vent. Should un-

recognized single wall be used, all

joints must be sealed with metallic

tape ora silicone suitable

for

temp-

eratures above 400°F (202°C).

Tape must be wrapped at least 2

times around the vent pipe. insulate

single wall vent pipe exposed

to

cold

air

or

running through unvented

__

.~~a_s,--

~~

(7-"62C!J11I,(tWl~[>s}!1~

_

be used

in

this application.

2.) Residential: Minimum vent lenth is 4'

(1.2m) and maximum vent length

is

8'

(2.4m)

of

4" (10.2cm) vent pipe. A 3"

(7.6cm) to.

4'~{

1O.2cm) bell-increaserwill

be required and 4" (10.2crn) vent cap.

Commerica.lllndusmal: Minimum vent

length is 5' (1.5m) and the maximum

vent length is 30' (9.1m). Each 3"

(7.6cm) elbow is approximately equal to

1foot (.34m).

8

3.) Vehling system

Shall

terminate a

minimum of3' (.9m) above any forced

system located within 10' (3.1m) and a

minimum of4' (1.2m) below, 4' (1.2m)

horizontally from, or

l'

(.34m) above

any door, window, electric org~ meters,

regulators orgravity airinlet into any

building. The bottom ofthe vent terminal

shaD

beiocated a minimum

of-1'

(.34m)

above grade orabove the snowline or

whichever is

the

greater. The venting

system shall terminate

not

Jess

than 7'

(2.1m) above grade adjacent to public

walkways.

4.) Horizontal vents shall terminate with a

listed "L" type vent

cap.

This cap shall

maintain a 12" (.3cm) clearance from

side ofwall.

See

figures

4,5

and

6.

5.)

If

condensation should occur, the venting

system shall not terminate over public

walkways oroverareas where

c0n-

densation orvapor will become a

nuisance orhazard ordetrimental to

operation ofregulators, reliefopenings or

otherequipment.

6.) This vent system must not

be

used

for

the

purpose

of

venting other units.

7.) Always maintain a 1/4" (.6cm) perfoot

(2.54an) rise

8Niay

from

~.

unit.

Include a drain tee

and

cleclnout

nearthe

vent connection.

See

figures 4

and

5.

Where local authorities

have

jurisdiction,

a 1/4" (.6cm) perfoot (2.54cm) slope

away

from

the

heater is acceptable.

Figure 6 allows for condensation to drain

~

out

the

end

by

the

venf

cali

---- -----

8.) Support the venting (flue) system

by

screwing three (3)

sheet

metal

screws

into

each

pipe connection and then

supporting at-rnaxinum intervals of4'

(1.2m) to prevent sagging (in

Canada,

support every 3'

(1.Om)

minimum

intervals).

9.) Figure 4 shows

how

to vent piping

through a combustible wall

with

either a

thimble ortype

B-O

vent.

Check

with

local authorities having jUrisdiction forthe

proper

procedure.

CLEARANCES

Unit heatersforcommercial

and

industrial in-

stallation shall

have

a minimum clearance

of

7'

(2.1

m)

from

bottom

ofthe heaterto floor

and

residential installation a minimum .

clearance of

5'

(1.5m)

from

the bottom ofthe

heaterto

floor.

Clearances to combustible material, which is

based

on

a 160"F (70.4°C),

must

be

held

as follows:

Top

&

Bottom:

1"

(2.54cm)

Vent

connector:

4"

(10.2cm)

Access side: 18" (45.7cm)

Non-access side: 1" (2.54cm)

Rear:

18" (45.7an)

Make sure that the airintake

and

discharge

airopenings

are

not obstructed.

Accessibility clearances must take

precedence overfire protection clearances.

Allow a

minimum

of

18" (45.7cm) clearance

at the rear or

6"

(15.2cm)

beyond

end

of

motor of

heater.

Make

sure access side is

prOVided

with ample airfor

both

combustion

and

proper

fan

operation.

GAS

CONNECTION

WARNING:

NEVER

USE

AN

OPEN

FLAME

TO

CHECK

FOR

GAS

LEAKS.

-

1F

THERE

1S

A-GAS

tEAK,

EXPLOSTON-

-

OR

INJURY

CAN

RESULT.

ALWAYS

CHECK

FOR

LEAKS

USING

A

SOAP

SOLUTION.

9

CAUTION

Check

inlet supply

pressure

at

the

unit

and

upstream

ofthe

gas

control.

Make

sure

the inlet supply

pressure

for

natural

! gas is 6-7" w.c. (1.2-1.7kPa)and

12-14"

:

w.C.

(3.Q-3.5kPa)for

LPG.

Purging

airfrom gas lines

and

piping

must

be

done

in

accordance to

the

instructions

outlined

in

ANSI

Z223.1-latest edition

I CANlCGA-B149

codes.

Never

exceed

14"

w.C.

(3.5kPa)

gas

pressure tothe controls

on

the unit

, heater.

The gas line should be as short

as

possible,

be ofadequate size to

prevent

undue

pressure drop

and

never

be

smaller

than

the

connection provided

at

the

heater.

Consult

the local utilityfor complete details

on

special requirements

in

sizing gas piping.

See

Table 2

on

page

12.

Connect

the gas pipe to the heaters' control,

providing a

ground

joint

union

tothe controls

and

manifold. Provide a drip leg.

See

figure

7.

An

additional manual shutoffvalve

with

a

118"

(.3cm) N.P.T. plugged tapping

accessible fortest

gage

connection

shall

be

...

installed external to the

unit.

FIGURE 7 ••

Piping

to

Controls

.. _

..

_-_

..........

_--

--_

.....

--._-------

------_._

..

_._-_.

GAS

SUPPLY LINE

,-t:.

J

t'

-:

-MANUAL-

GR01Jt'<O_

- - - - - -

- -

-:

: SHUT-OFF JOINT

,

'VALVE

UNION

GAS

:I :

SUPPLY LINE

,.1.

--',

.

(

__

.-,.r-

---.~:

.

.,..,

-~--,=-

\:-----;::

Ir-'I ®

'I

-~-

II

n..~_

,·-------~.:.-'tJ:

- \

CON~~OLS

-PLUGGEO

3'

t 1/8' NPT TEST

~IN.

""GAGE

CONNECTION

..

" :

7.

pC,.,

SEDIMENT

TRAP

Make

sure

the piping is

pitched

upward

towards the unit

at

least

1/4"

(.6crn) per

15'

(4.6m) ofhorizontal

run.

Propane

u~its

are provided with a

regulator.

A regulator is also

required

on

the propane

tanks.

Piping

must

be

gas

tight

and

a non-

harding pipe

compound

resistant to the

actions of

LP

gases

must

be

used.

Supply piping

including

union

and

external

shutoffvalve

are

Il2t

proVided.

GAS

PRESSURES

TABLE

3 - PRESSURES

GAS MAN.

PRESS. SUPPLY PRESS.

INCHES

w.e.

(kPa)

IN. W.C.

(kPa)

MAX.

MIN.

NAT.

3.5 (.87) 14.0 (3.5) 6.0 (1.2)

LPG 10.0 (2.5) 14.0 (3.5) 11.0 (2.7)

The manifold

pressure

may

be

measured by

removing

the

pipe

plug

on

the downstream

side ofthe gas

control

and

connecting

a

water

manometer.

Only a

small

variation

in

gas

input may be

mad~

lW~ustioo

tbe,~lator.

-!n

no

~'

...

should thefinal manifold

pressure

vary

by

J'T)9fe

than

0.3"

w.c

(.1kPa).

from the above

specified

pressures

shown

in

Table

3.

Where the supplied

gas

pressure

has a

greaterspecific gravity

use

the multiplying

factors shown

in

Table

4.

TABLE

4.

••

SPECIFIC GRAVITY

CONVERSION FACTORS

Multiplyfactors

to

be

used

with

table 4

when

the specific

gravitY

of

~

as

is otherthan

O.

60

NaturalGas LP (Propane)

~~

_

SpecI11c

SpecI1ic

Gravity

Factor

Gravity

Factor

0.55 1.04 1.50 0.633

0.60 1.00 1.53 0.626

0.65 0.962 1.60 0.612

Followthese

two

(2)

methods

for input

adjustment:

(A)

Method

A -

Meter

Timing

To

check

a

heaters

input

rate,

observe the

gas

meter,

making

sure

all otherappliances

are

turned

off.

10

The

test

hand

on

the meter should

be

timed

forat least

one

(1) revolution. Note the

number of seconds

fQf

one

(1) revolution.

Use

this formula to obtain the BTU! Hr input

rate:

BTU/Hr·

(Fe/rev. +No. secJrev.) x 3600

x HeatingValue

Your local utility or gas supplier

can

give

you

the

heating

value

needed. However,

the

following representative values may

be

used:

GM.

BTUlfr

Natural 1000-1150

LPG

(Propane) 2500

Also, you

may

use

Table 5 (meter-timings)

based

on

different size meters.

TABLE 5

-Meter-timing

Gas

(Timing required for one revolution is charted

for various size meterdials and various rates

ofgas input in

cu.

ft. per hour. To convert to

Btuh, multiply by the heating value ofthe

gas used.)

TIme

for 1 Input, Cu. Ft.

per

HoUr,

when-

RevolUUon, meter

dial

size Is:

Sec.

112

Ft'

1Ft'

2Ft'

5 Ftl

10

180 360 720

1800

12

150 300 600 1500

14

129 257 514 1286

16

112 225 450 1125

18 100

200

400 1000

20 90 180

36

900

22 82

164

327 818

24 75 150

300

750

26 69 138 2n 692

-2fL

-.

M_

_129. _ _.25]_ _

Ji43

30 60 120 240 600

35

51

.103 206

514

40

45 90 180 450

45

40 80

160

400

50

36

72 144 360

55

33 65

131

327

:60 .30 60

..

-120:

_ _

..

aoo-

70

26

51

103 257

80

22

45

90

225

90

20 40

80

200

100

18

36

72

180

120

15 30 60

150

If

the

regulator needs adjustment, the

regUlator

adjusting screw

may

be

turned

clockwise to increase the pressure or

counterclockwise to

decrease

pressure.

Never increase

or

decrease the manifold

pressure

by

more

than

or

less

than

0.3" w.c.

(.87kPa).

(B) Method B - Pressure Method

This

method

determines the

input

rate by

measuring the gas

pressure

in

the manifold

in

inches water

coiumn.

Proceed

as

follows:

1.)

Find

the

correct

manifold pressure

shown

in

Table 6.

2.) Locate

the

combination control inside

the

heater

and

then

push

in

on

the

"on/off" leverso that it

snaps

tothe

closed position.

3.)

Remove

the

118"

(.3cm)

plugged

tapping from outlet ofthe control

and

then

attached

either

awater

mano-

meter

or

"U"

shape

tube

which is at

least

12"

(.3cm)

high.

4.)

Put

heater into operation perthe

lighting instructions and

set

the

-t!remrvStat

up'so1hat

the11eaterwiU

continue to

operate.

5.) Ifthe manometer or

"UK

shape

tube

pressure indication is

less

than 1/2"

w.c. (1.3cm) higher

or

lower

than

shown

in

Table 6, adjust

the

regUlator

as

described

in

Table 6. Ifthe mano-

meter

or

"U"

shape

tube pressure in-

dication

is

more

ttICii11i2"

w.e.

(1.3cm)

higher

or

lower

than

shown in Table 6,

check the inlet gas

pressure

at heater.

The inlet gas pressure should be not

-

m<iethan

l"w-:-c-:-(f.7kpa)bufooHess

-.

than

6"

w.c.

(1.5kPa).

6.) Afteradjustment

has

been completed,

make

sure

the gas

flow

is shutoffatthe

-heater

by.

pre~ing

in

on

the

-lever

so

that

it

snaps

tothe "off" position.

Replseethe 1/8" (.3cm)

plug

taps

and

tum gas

on.

11

7.)

Restart

heater

by

following the lighting

instructions.

Set

thermostat to

the

'desired

temperature

setting.

Table 6

--

Manifold Pressure

and

Gas

Consumption

Natural LPG

(Propane) No.

of

Model BTU/Cu.

Ft

1050 2500 Orifices

Spec. Gravity 0.60 1.53

Man.

Press.

In.

W.c.(kPa} 3.5

{.a7}

10.0

{2.5}

GH30 CFH

Gal/Hr. LPG

SeclCu.1't.

Orifice OMS

28.6

12.6

49

12.0

.33

300

56

2

GH45 CFH

Gal/Hr. LPG

Sec/Cu.

ft.

Orifice OMS

42.9

84

49

18.0

.50

200

56

3

GH60 CFH

GallHr. LPG

Sec/Cu. fl.

Orifice OMS

57.1

63

49

24.0

.66

150

56

4

GH75 CFH

GallHr. LPG

-

SecICu.

ft.

Orifice OMS

71..4-

50

49

30.0

.83

180

56

5

Table 2 -- Gas Pipe Capacities

In

Cu.

Ft.

per

Hour

with

Pressure

Drop

of

0.3

in.

w.c.

(.1kPa)

with Specific Gravity of

060

ELECTRICAL

CONNECTIONS

CAUTION

Power

supply

must

be

disconnected

before

making

any

wiring

connections

to

prevent

electrical

shock

and

equipment

damage.

Units

must

be

wired

strictly

in

accordance

with

the

WirfntJ

diagram .

furnished

with

the

heater.

A

fused

circuit

or

circuit

breaker

must

be

used

to

protect

the

heaterat all times.

This appliance

must

be

electrically

grounded

in

accordance

with

local

codes,

or

in

the

absence

of

local

codes,

with

the

latest

edition of

the

National

Electrical

Code,

ANSIINFPA

70,

and/or

the

CSA

C22.1

Canadian

Electrical

Code,

if

an

external

electrical

source

is

utilized.

Use

wiring

with a

temperature

rating

of

105°C;

run

the

115

volt,

60

hertz

electric

power

supply

through

eithera

15

amp

fused

circuit or

15

amp

circuit

breaker

to

the

junction

box

of

the

heater

as

shown

in

the

wiring

diagram.

See

figure

8.

Length Diameterof Pipe -Inches(cm)

ofPipe

in

Ft(m) 1/2 (1.3)

, .

314

(1.9) 1 (2.54) 1·1/4

(3.2)

15(4.6)

76

218

440

750

3.0(9.1)

_ _

:Il-

_ __

'~2.-

_ _

.28-5

__

~90

__

45(15.7)

44

124

260

435

60(18.3)

50

105 190

400

75(22.9)

97

200

345

90(27)

88

160

320

105(32)

80

168

285

120(36)

158

270

150(46)

120

242

180(55)

128

225

210(64)

205

240(73)

190

270(82)

178

300(91)

170

450(137)

140

600(183)

119

12

- -

-,

-If

-any

of

the

original

wire

supplied

with

the

.

BEFO~E_OPERAnNG

UNIT

__

-

_heater

must

be

repl8ced.

replace

it

with--

HEATER'

--wiring material having a temperature rating -

of

at

least

105°C~

-Follow

these

on-site pl'e-operational

procedures before

putting

unit heater into

InStali.

thethennostat

according

to directions

oPeration:

-

furnished.

The

thermostat should be located

_

on

an

inside

wall-about

5'

(1.5m)

above

a

1:}

·Tum-off

poWer supply.

level

floor.

-- --- - --

--

2.)

c~

all

clearances.

.I

FIGURE

~

-Wiring

Dia~ram

-

3.1

Make

sure

fan

is

not

contacting casing

when

blade is

spUli

by

hand.

4.)'

Check

to make sure deflector blades

are at a 30° minimum angle

from

the

horizontal.

5.)

Make

sure all electrical connections

aresea.re.

6.) Checkforgas leaks.

UGHTING IOPERATlNG

INSTRUCTIONS

FOR

YOUR

SAFETY

READ

BEFORE

OPERAnNG

WARNING:

Ifyoudo

not

follow

these

instructions exactly. afire or

~xplosion

may

result

causing

properly danlage,

~I

injury orlossof life. - .

A. Thisappliance

does

nothave a pilot. It

is equipped

with

an

ignitiondevice which

.

,yt_~~

liDbts

~_~J'

'-

Do!lQt

__

tryto light

~

burnerbyhand.

B.

BEFORE OPERATING smell all around

theappliance

ar((*J

for

gas.

Bem

to

smell

the

floor because

some

_..

..

-gas.is-heavier

thanair-_andwill

settle

on

Cheek

poIirIty

of

'Iecb

leal

outltt

If

bu.r

_

thefiOOf.

does

not

stay

lit

WHAT TO

DO

IF

YOU

SMELL

GAS

•

Do

nOt

try to tight any appliance.

..

Do

not

touch

any

electric

switch: do

not

use

any

phone

in

your building.

13

'*

Immediately call your gas supplier

from a neighbors

phone.

Follow the gas suppliers

instructions.

..

If

you

cannot reach your gas

supplier, call the fire department.

C. Use'only your hand to move the gas

control switch. Never use tools. Ifthe

switch will not move by hand, don't try to

repair

it,

call a qualified service

technician. Force or attempted repair

may result

in

a fire orexplosion.

D.

Do

not

use this appliance

if

any part has

been underwater. Immediately call a

qualified service technician to inspect the

appliance

and

to replace any part

ofthe

control system

and

any gas control which

has

been

underwater.

OPERATING

INSTRUCTIONS

1.

STOP! Read the safety information

above.

2.

Set thermostat to

fowest

setting.

3.

Tum off ail electric powerto the

appliance.

4. This appliance is equipped with

an

ignition device which automatically lights

the burner.

Do

not try to light the burner

by

hand.

5.

Remove the access panel.

6.

Push

in

on

control lever. Lever will

spring to the "OFF" position.

7.

Wait five (5) minutes to clear out any

gas. Then smell for gas, including near

the floor. If

you

smell gas, STOP! follow

- -

-"B"-above~

-If

you

don1

smel(ga~

go

to

--.

next step.

8.

Move gas levercounter clockwise to

the

"ON" position.

.9. Replace control access panel.

10.

Tum

on

all electric power to the

appliance.

.11.

Set thermostat to the desired setting.

12. Ifthe appliance will not operate. follow

the instructions ''To Tum OffGas

To

Appliance"

and

call your service

technician or gas supplier.

TO

TURN

OFF

GAS

TO

APPLIANCE

1.

Set the thermostat to lowest setting

2.

Turn manual shut-off valve located

outside

of

the unit to the closed position.

3.

Turn off all electric power to the heater,

Ifservice is to

be

performed.

4.

Remove access panel.

5.

Turn gas valve control switch to the

"off' position.

6.

Replace the access panel.

OPERATING

SEQUENCE

Upon

call

from1he

lhernostat;

-power

is

supplied to the exhaust

and

circulating

motors.

As

the exhaust motor speeds

up,

the

pressure switch circuit closes allowing

the hot surface ignitorto become energized.

Following the ignition heat-up period the

main gas valve will open

to

allow gas flow to

the

burners.

Once

the flame has been

detected, the ignitor is de-energized.

When the thermostat is satisfied and the

demand for heat ends, the main gas valve is

de-energized immediately stopping the flow

9f

.9~~

JQ.

th~J?l!I"D~G?

!!nli1Jbe_n~~

~R

tor _

heat.

The

circulating

and

exhaust blowers

continue to operate for another60 seconds

before shutting off. Ifa flame is not sensed

for any reason, there will

be

three (3) tries

for ignition

and

the ignition module will go

into

~ock6ut

shutting

flOWn-

the

~ntjr-e.

system

at which time either

the

thennostat

will

need

to

be

manually reset

or

the power shut-off :

;for 5 seconds.

14

TECHNICAL/DIMENSIONS Dimensions inches/em

Models

30

45

60

15

A

26.8168

26.8168 26.8168

26.lW8

B

12.2131

12.2f31

18.0146

18.GM6

C

16.5142

16.5142 16.5142 16.5142

0 14.9/38 14.9J38 'l4.9J38 14.9(.38

-E,

.--- 10:1l26 ' '

'10:1126

15.9126 .

15.9126

F

7.m9

13.7135

G

17.5144

17.5/44

17.5144

H

7.0118

7.0/18 7,(\,18 7.0118

Gas Conn.

1l211.3

11211.3

1l211.3 1l211.3

I

28171

31fl1

31ni

J

22156

25I!i6 25I!i6

Fan

Cia.

10125.4

10125.4 14125.4

14125.4

Weightlbslkg

55125

00/27

eorJ6

85(J8

(3j)A5.60.75)", .

Moun~ng

Holes

Typ

&

16

x2.5'

Long

---G----

Access

Side

I

-Vent

Pipe

Connection

"'LOO

,/-----A

E!e<:tical

F,::==;====i==;~~t

:ection.

~-

MAINTENANCE & SERVICE

'L

l a

~

l [

SERVICING

OR

REPAIRING

THIS

',--_oOpenin

g

./

H_I~k=

EQUIPMENT

MUST

BE

PERFORMED

BY

A

Panel

Back

View

QUALIfiEDSERVICE

AGENCY.

TECHNICAL

Do

not

use

this appliance if

any

part

has

been

under

water.

Immediately call a

qualified

service

technician to inspect the

appliance

and

replace

any

gas

control which

has

been

under

water.

Models

30

45

60

75

STUH Input 30,000 45,000 60,000 75,000

STUH Output 24,000 36,000 48,000 60,000

In air-flow

CFM 505 720

990

1160

Outlet Vel. 523 749 653 769

Temp. Rise

~Frc

4416.6

4&7.7

4517.2

413/8.8

_

Max....Mtg

___

Height

fUm

_JQI3

__

._10~_

12l3Ji

_~6_

Heat throw

fUm

2517.6

27/8.2 36/10.9 38/11.6

Hp 1/15 1/15 1/12 1/12

RPM 1550 1550

1625

Type

S.P.

P.S.C.

Amp 1.5

2.4-

1.2 1.2

Total Amps 2.8 3.7 2.5 2.5

Vent Dia.

in.lcm

317.6

3n.6

317.6

Should

overheating

occur,

or

the

gas

valve

supply fail to

shut

off,

shut

off

the

manual

gas valve

to

the

appliance before

shutting

off

the

electrical

supply.

- --Before

dOing

any

mamtenance

-or

clean-ing

to

the

appliance

make

sure

that all gas

and

electricity is

turned

off.

The

unit

and venting system

must

be

checked

at

leastonce a year before the

heating season starts.

To

clean

the

outside

of

the

appliance

use

a

soft cloth

and

soap

solution. Neveruse

an

abrasive

to

clean

any

surfaces.

15

A)

MAINTENANCE

1.

Remove

the access

panel.

2.

Close

manual

gas valve and

disconnect

the

union

on

the

gas

line.

3.

Disconnect

wires

from

the gas valve

along

with

ignition wires

from

81

and

82

on

the module.

4.

Remove

the

screws that attach the

burnertray assembly

from

the

vestibule

panel.

This entire assembly

comes

out

as

one

complete

piece.

5.

Carefully clean the

burners

with

a

smallwire

brush

and

vacuum.

6.

While assembly is

out

check

the

orifICeS

to make

sure

there is

no

blockage.

7.

Check

each

tube

type

heat

eXchanger

fordirt orcracking. Ifdirty,

clean

with

awire

brush

and

vacuum.

If

any

cracks are

seen

replace

toe

heat

. .

eXchanger

assembly.

8.

Re-assemble burnertray assembly

and

gas piping.

Make

sure

piping is

tight.

9.

Check

all wiring for

loose

connections

orcracks in the insulation. Also

check

to make

sure

the rubbertube

connected

to the

pressure

switch

has

nofdhe(fand

cracked.

Replace

as

• T

••••

~

-

necessary.-

- - - -

--

-

---

--- - - -

10. Re-connect wiring to the gas valve

andto the tenninals

81

and

82

on

the

module.

11.

Check

c4rcu!ating

blowerassembly to

make

sure

thatthere is

no

damage

to

the

fan

blade

and

that

the

blade is

secured

to the

motor

shaft.

12.

Power

exhaust

assembly -The motor

used

is pennanently lubricated. Ifthis

assembly

needs

cleaning blow

out

the

cooling

air

passages

ofthe motorwith

compressed

air.

13.

Tum

gas

and

electricity back

on

and

set

the thennostat high

enough

to

make

the heater

go

through

a complete

cycle

to

ensure

proper operation

and

that there is

no

gas

leakage.

14.

Replace

access

panel

and

set the

thermostat atthe desired setting.

15.

Replace

any

wam

or

broken

c0m-

ponents

and wiring

as

necessary

to

ensure

trouble free operation.

16.

The

appliance and its shut-off valve

must

be

disconnected

from the gas

supply

piping

system

during

any

pressure

testing ofthat system

at

test

pressures

in

excess

of

1/2

psi

(3.5kPa).

The appliance

must

be isolated from the

gas

suppiy-pjping-by

c10singlts

1~

dividual

manual

shut-off valve during

any

pressure

testing ofthe gas supply

piping

system

at

test pressures equal to

or

less

than

1/2

psi (3.5

kPa).

B.) SAFETY DEVICES

1.) Limit

control

This

control

is

located

in

the access

compartment

and

the element is

-

--

- -

-located

jn

Jhe..airstrearn.b.yJlle1ube _

heat

eXchanger.

This control will shut

offthe

gas

to the

burners

should

over-

heating

result.

The

limit control will

function

ifthe wall thennostat orsome

other

component(s)

malfunction. Once

this-limitcools,

it

wi!!

-allow

the

neaterto

re-

tryfor ignition. Ifthe

same

problem

occurs

immediately

shut

the

gas supply

and

electricity off. Call your service

technician immediately forservicing.

16

2.) Rollout switches

The

switches are located

on

the bottom

burner

panel.

Iffor

some

reason

flames

rollout

during

an

ignition cycle

the

flames will touch these switches

shutting off gas flow.

When

cooled,

the

switches will have to

be

manually reset

by

pushing

in

on

the

push

button

located

on

top of

each

switch.

3. )

Pressure

Switch

This is a noonally open type switch

which works

on

pressure.

VVhen

the

inducer motor speeds

up

to produce

enough

pressure

in

the venting

system

the contacts

in

the

pressure

switch

close completing

the

circuit to the

ignition

system.

Ifforsome

reason

the

inducer motorfails to operate

or

the

venting system becomes blocked, the

pressure switch contacts open and the

unit will

not

operate.

Ifthe pressure switch contacts

do

not

close

ctaeCk

forlhe1011owing:

1.

Check venting

system

for blockage.

Remove

the obstruction(s).

2.

Check

to

make

sure

the

tube

between power

exhaust

and

pressure switch

is

secured

and

has

not deteriorated. If

bad

replace.

3.

See

if

there is airflow at the vent

termioot

_

Repl!1~pre~

_switch

_

if

there is airflow. Replace the

power exhauster

if

there is no air

flow.

4.) Hot surface Igniter

The

igniter is

made

from a ceramic

material which must glow red

hot

until it

reaches

a

required

tempe-

rature to ignite

the

gas flowing

through the

burners.

If

the

igniter

does

not

glow

red

hot,

check

the

resistance. Ifless

than

100

ohms,

replace

the

igniter.

To

replace,

disconnect

the

leads

S1

and

S2

from

the

module

and

remove

the

two

(2)

screws

holding

the igniterto

burner

box

cover.

Be

very

careful

when

Installing

new

igniter.

Re-connect leads to

S1

and

82

on

the

module.

LED

DIAGNOSTIC

CAPABILITY

The

red

LED

on

the

ignition module

indicates

the

condition

of

the

control system.

The

following

codes

indicate

what

type

of

failure is

occurring

and

are

also

shown

on

the

module:

ERROR

~,10DE

LED

INDICATION

I Normal Operation Steady ON

No

Powerllntemal Fault Steady OFF

Flame Sensed

out

of

sequence 1 Flash

Ignition Trail Lockout 2 Flash

Pressure Switch 3 Flash

The

LED

will

flash.on

for

1/4

second,

then

1/4offsecond

during

afault

cOOdition.

The

pause

between

fault

codes

is3 seconds

..

TROUBLE

SHOOTING

INFORMATION

There

are

afew

basic

trouble shooting items

that

you

may

perform

iffor

some

reason

the

heater does not

operate.

All other trouble

shooting

MUST

BE

DONE

BY

A QUALIFIED

SERVICE

AGENCY.

A.) Ifthe heater

does

not

light:

1.)

-Make-

sur-e-theR'OOStat

-is

set

-above

room

temperature.

2.)

Make

sure there is

power

to

the

heater.

3.)

Make

sure

the

main

gas

supply is

on

at

the

manual

shut-offvalve.

-4:}lfnone

of

the

above

solve

the

problem,

contact

a qualified service·

agency.

17

B.)

Air

feels cold coming out

of

the

heater:

1.)

Make

sure

burner

is lit.

2.)

If

the

room

WAS

cold,

itwill take a

while

for

the

air

coming

out

of

the

heaterto

feel

warm.

3.)

If

the

air

coming

out

of

the

heater

continues

to

feel

cold

after 5

minutes

and

the

room

is

not

warming

up,

contact

aqualified service

agency.

FOR SERVICING

Ifa qualified

service

person

cannot

solve

the

problem,

consult

your local

gas

company

or

Wholesaler or Distributor.

When servicing, repairing

or

replacing

parts on these

units

always give

the

complete Model Numberand Serial

Number

from

the the

unit

rating plate.

18

I

-

,

I

; .

I;

i:

,

"

i'

i;

1,

I

•

l'

' .

....

Uni-pak GH Series Instruction manual

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