Weil-McLain HE (Series 2) Manual del propietario

UIEII-

flic

IAIN

MODELS

(Series

AND

VHE

(Series

NATURAL

GAS-FIRED

INDUCED

DRAFT

BOILERS

SUPPLEMENTAL

INSTRUCTIONS

WITH

WHITE-RODGERS

CYCLE-PILOT®

SYSTEM

FOR

NATURAL

GAS-FIRED

BOILERS

'S'-

imLfliH

VHE&

MODEL

VHE

(Series

MODEL

(Series

NATURAL

GAS

Part

No.

550-Mi-422/0982WP

(Series

and

VHE

(Series

with

White-Rodgers

Cycle-Pilot*

for

Natural

Gas

Firing

TABLE

CONTENTS

Base

Assembly

Parts

Description

With

White-Rodgers

Cycle-Pilot*

For

Natural

Gas

Firing..

Ignition

System

Components.

Boiler

Equipment

Components

...

Sequence

Operation

Schematic

Wiring

Diagram

Ladder

Wiring

Diagram

Trouble

Shooting

Procedure

Checking

The

Pressure

Differential

Switch.6

Trouble

Shooting

Charts

(Series

and

VHE

(Series

Base

Assembly

Parts

Description

With

White-Rodgers

Cycle-Pilot*

For

Natural

Gas

Firing

FIGURE

MODEL

NO.

VHE

NO.

PART

DESCRIPTION

QTY.

PART

NO.

QTY.

PART

NO.

QTY.

PART

NO.

QTY.

PART

NO.

■

Relite

Control

Gas

Valve

Assembly

Orifice.

Main

Burner

Natural

Gas

No.

Drill

511-330-111

511-044-288

560-528-992

511-330-111

511-044-288

560-528-992

511-330-111

511-044-288

560-528992

511-330-111

511-044-288

560-528992

Not

Shown.

NOTE:

PARTS

LISTED

ABOVE

ARE

FOR

BOILERS

FIRED

WITH

NATURAL

GAS

ONLY.

FOR

ADDITIONAL

PARTS

COMMON

NATURAL

AND

PROPANE

GASES

REFER

BOILER

MANUAL.

IMPORT

ANT:

When

calling

writing

about

the

boiler,

PLEASE

GIVE

THE

MODEL,

SERJES,

AND

C.P.

NUM¬

BERS,

located

the

boiler.

Any

reuse

reproduction

the

artwork

and

copy

this

manual

strictly

prohibited

without

the

written

consent

Weil-McLain.

UlEIL'DIclAIN

••Canada

CanadatTO

lift

f7ff€awO>

S*anwvi

OnaeUT

tC?

Michigan

City,

Indiana

46360

■

Marley

Company

(Series

and

VHE

(Series

WHITE-RODGERS

CYCLE-PILOT*

IGNITION

SYSTEM

COMPONENTS

FOR

NATURAL

GAS

FIRING

Cfc

TRANSFORMER

FIGURE

psEssime

PRESSURE

SWITCH

FIGURE

5059

RELITE

CONTROL

RGURE

PRE-PURGE

TIMER

RGURE

NOTE:

When

gas

cock

positioned

over

black

line

collar

around

knob,

pilot

will

cycle

and

off

but

main

burner

gas

will

not

flow.

36C84

GAS

COCK

KNOB

RGURE

36C84

GAS

VALVE

RGURE

CHECKING

FOR

ENERGIZED

PILOT

SOLENOID

COIL

MAGNETIC

PULL

MEANS

COIL

"ON”.

RGURE

•OCSSVOC

SWITCH

TERMINALS

FLAME

SENSOR

SOCKET

RGURE

THERMAL

FUSE

ELEMENT

(TFE)

RGURE

E50

PILOT

BURNER

ASSY.

RGURE

3098

MERCURY

FLAME

SENSOR

RGURE

Operation,

Wiring

Diagrams,

Trouble

Shooting

(Series

and

VHE

(Series

With

White-Rodgers

Cycle-Pilot®

For

Natural

Gas

Firing

BOILER

EQUIPMENT

COMPONENTS

BLOWER

MOTOR

120/60/1,3450

RPM

permanent

split

capacitor

motor

with

ca¬

pacitor

start

and

internal

overload

protection

provides

rota¬

tion

induced

draft

fan.

FAN

(BLOWER

WHEEL)

Develops

induced

draft

supply

combustion

air

boiler.

PRE-PURGE

TIMER

Provides

second

pre-purge

prior

pilot

ignition.

HIGH

TEMPERATURE

LIMIT

CONTROL

the

event

high

boiler

water

temperature,

shuts

down

fan

and

burners

but

allows

circulator

run

long

there

call

for

heat

from

thermostat.

PRESSURE

SWITCH

Detects

pressure

differential

across

fixed

metering

orifice

prove

air

flow

through

boiler.

COMBINATION

PRESSURE

AND

TEMPERATURE

GAUGE

Provides

readings

boiler

water

pressure

and

temperature.

COMBINATION

RELAY

RECEPTACLE,

JUNCTION

BOX

AND

TRANSFORMER

120/24

VOLT

transformer

provides

low

voltage

for

con¬

trol

circuit.

Relay

receptacle

for

plug-in

circulator

relay.

Ter¬

minal

strip

for

control

circuit

wiring.

PLUG-IN

CIRCULATOR

RELAY

Provides

contact

energize

circulator

and

fan

and

contact

prove

operation

pressure

switch.

ASME

SAFETY

PRESSURE

RELIEF

VALVE

Provides

safety

discharge

the

event

boiler

water

pressure

exceeds

PSIG.

FILL-TROL

SYSTEM

(TYPES

P-HE

AND

P-VHE

ONLY)

Includes

compression

tank

with

permanent

air

cushion

and

combination

manual

shut-off

valve,

check

valve,

pressure

re¬

ducing

valve

and

strainer

for

automatic

filling

and

maintai

ing

nim

system

pressure.

AUTOMATIC

AIR

VENT

(TYPES

P-HE

AND

P-VHE

ONLY)

Vents

air

from

boiler

built-in

air

imi

ator

tapping.

GAS

VALVE

Incorporates

pilot/redundant

solenoid

valve,

integral

pres¬

sure

switch

sense

incoming

gas

pressure,

pressure

regula¬

tor,

main

valve

operator

and

socket

plug-in

Mercury

Flame

Sensor.

MERCURY

FLAME

SENSOR

Consists

sensing

bulb,

capillary

tube

and

diaphra

filled

with

mercury

and

connected

SPDT

switch.

Heat

from

pilot

vaporizes

mercury

causing

diaphragm

snap

switch.

RELITE

CONTROL

Provides

spark

light

pilot.

PILOT

BURNER

ASSEMBLY

Includes

spark

ignition

pilot

with

mercury

flame

sensing

probe.

THERMAL

FUSE

ELEMENT

(TFE)

Provides

safety

shutdown

burners

and

pilot

flame

not

contained

firebox.

DRAIN

VALVE

Used

drain

boiler

necessary.

CIRCULATOR

Provides

forced

water

circulation

hot

water

heating

system.

SEQUENCE

OPERATION

Referring

Ladder

Diagram,

Page

Thermostat

closes,

activating

relay

(through

pressure

switch).

Contacts

CR1

and

CR2

close:

CR2

activates

circulator.

Blower

activated

through

limit

switch.

CRl

provides

bypass

around

pressure

switch

prove

its

operation.

When

adequate

draft

proven

pressure

switch,

the

second

pre-purge

timer

starts.

After

second

delay,

VAC

provided

terminals:

relite

control

which

starts

spark.

gas

valve

which

opens

pilot

valve.

Pilot

ignites:

Flame

conduction

stops

spark

from

relite.

Mercury

flame

sensor

opens

main

gas

valve

and

pres¬

sure

switch

gas

valve

holds

pilot

open.

After

thermostat

satisfied,

deactivated:

CR2

opens

turning

off

blower

and

pump.

CRl

opens

turning

off

gas

flow.

air

flow

from

blower

reduces

pressure,

switch

changes

normally

closed

position.

Boiler

now

"off”

cycle.

trouble

shooting

procedure

NEVER

jumper

out

(by-pass)

the

Thermal

Fuse

Element

(TFE)

«y

other

for

moment

Sting

outlined

Trouble

Shooting

Tables).

Hre

causing

property

damage

and/or

personal

injury

could

result.

Before

tsH-ing

the

trouble

shooting

procedure,

sure

sioe

the

following:

You

have

voltmeter

capable

checking

120

VAC,

VAC

and

continuity

tester.

That

120

VAC

power

supply

available

the

boiler

minimum

102

VAC,

maximum

132

VAC).

That

there

VAC

the

secondary

side

the

con¬

trol

transformer.

You

have

inclined

manometer

with

range

0-2.0

W.C.

FIGURE

CHECKING

THE

PRESSURE

DIFFERENTIAL

SWITCH

Note:Make

sure

boiler

water

temperature

100*

cooler

before

beginning

procedure.

Remove

the

sensing

tube

the

front

the

pressure

switch

(closest

you

face

the

boiler).

Refer

Fig¬

ure

12.

Install

"T”

into

the

sensing

tube

and

another

piece

tubing

from

the

”T”

the

pressure

switch.

Attach

the

third

leg

the

"T”

the

suction

side

inclined

manometer.

Remove

the

sensing

tube

the

rear

the

pressure

switch.

Install

"T”

into

the

sensing

tube

and

another

piece

tubing

from

the

"T”

the

pressure

switch.

Attach

the

third

leg

the

"T”

the

pressure

side

the

manometer.

the

manual

main

gas

valve

and

set

thermostat

call

for

heat.

Blower

will

run

but

pilot

and

main

burners

will

not

ignite.

Check

for

VAC

between

normally

open

terminal

pressure

switch

and

terminal

transformer

(Figure

and

2).

the

reading

the

.nanometer

least

hes

wa-

h«re

not

across

N.O.

ter-

ter

column

pressure,

but

.heje

replace

mmal

pressure

swltcn

ana

ierw»

pressure

switch.

•

„

,an

W.C.

look

for

tbe

follow-

10.

Ifthe

reamngis

lower

tima

a-o

ing

causes:

Blockage

sensing

tube.

Obstruction

the

blnwer

housing

nutlet.

Loose

bucwer

wheel

««•

motor

shaft.

Blower

=ocor

not

(>ruper

RPM.

Blower

ruck

plate

net

sealed

properly.

Block

airs

the

block

assembly.

Blockade

the

flu"

|»i|***

termination.

When

pressure

reading

proper

and

pressure

switch

operating

properly,

rnuu.ve

”T"s

and

re-.nstall

sensing

tubes

tbs

pressure

switch.

(Series

and

VHE

(Series

with

White-Rodgers

Cycle-Pilot*

for

Natural

Gas

Firing

■

;

TABLE

I—BLOWER

AND

CIRCULATOR

WILL

NOT

OPERATE

TABLE

II—BLOWER

WILL

NOT

OPERATE,

BUT

CIRCULATOR

DOES

OPERATE

(Series

and

VHE

(Series

with

Whit

e-Rodger*

Cycle-Pilot*

for

Natural

Gas

Firing

TABLE

III—CIRCULATOR

WILL

NOT

OPERATE,

BUT

BLOWER

DOES

OPERATE

TABLE

IV—NO

SPARK

PILOT—BLOWER

CIRCULATOR

BOTH

OPERATE

(Series

and

VHE

(Series

with

Whit

e-Rodgers

Cycle-Pilot*

for

Natural

Gas

Firing

TABLE

V—SPARK

PRESENT—PILOT

WILL

NOT

LIGHT

Make

sura

all

gas

cocks

and

gas

shut-off

valve#

are

open,

the

gas

cock

knop

the

36C84

valve

the

"on"

position?

(Figure

incoming

pressure

least

5.0'?

Move

gas

cock

knob

the

“ON”

position.

(Figure

3098

Mercury

Flame

Sensor

plugged

into

gas

valve?

(Figure

11)

alt

gas

cocks

are

open,

contact

the

gas

supplier.

The

36C84

series

valve

requires

minimum

5.0"

W.C.

inlet.

(Figure

Place

steel

rule

small

screwdriver

blade

across

the

top

the

pilot

solenoid

coil.

magnetic

pull

felt?

(Figure

Firmly

seat

3098

Flame

Sensor

into

gas

valve

socket.

(Figures

10-11)

gas

present

the

pilot

burner?

(Use

match

taped

long

screwdriver

pilot

lighter

manually

light

pilot)

(Figure

VAC

across

terminals

and

36C84

gas

valve?

(Figure

Check

wiring

gas

valve.

Check

for

ignition

sparks

between

the

electrode

tip

and

the

sensing

bulb.

Does

spark

occur

the

middle

the

pilot

gas

stream.

Check

for

blocked

pilot

orifice

tubing.

(Figure

8).

orifice

and

tubing

are

dear,

replace

gas

valve.

(Figure

Check

for

physical

damage

the

pilot

bumers/electrode

debris

near

electrode.

With

manually

lit

pilot

flame,

check

the

position

the

tip

the

ignition

electrode.

The

tip

should

the

soft

blue

portion

the

pilot

flame

that

spark

the

pilot

head

will

ignite

pilot

gas.

ignition

trial

does

the

gas

sputter

past

the

spark?

(See

Figure

Remove

the

flame

sensor

from

valve

socket,

and

place

jumper

wire

between

holes

and

the

gas.valve.

With

jumper

place,

check

for

magnetic

field

top

solenoid

coil.

magnetic

pull

not

felt,

replace

gas

valve.

pull

felt,

check

flame

sensor/gas

valve

socket

connections.

Clean

pins

sensor

plug

with

emery

cloth.

(Figure

10).

Replace

flame

sensor

condition

not

corrected.

Check

for

weak

ignition

spark,

spark

occurring

locations

other

than

ignition

electrode,

high

drafts

across

pilot

burner,

and

damaged

pilot

burner

assembly.

(Figure

Decrease

pilot

gas

pressure.

Remove

pilot

adjust

cover

screw

and

rotate

adjust

screw

dockwise

decrease

gas

pressure

(Figure

Attempt

increase

pilot

gas

pressure

removing

pilot

adjust

cover-screw

and

rotating

pilot

adjust

screw

counterclockwise.

pilot

flame

size

does

not

increase,

check

for

high

drafts

across

pilot

burner.

(Figure

10)

(Series

and

VHE

(Series

with

White-Rodgers

Cycle-Pilot®

for

Natural

Gas

Firing

TABLE

VI—SPARK

WILL

NOT

SHUT-OFF

AFTER

PILOT

FLAME

ESTABLISHED

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