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OWNER'S MANUAL
DIAMOND 80 BELT-DRIVE
GAS-FIRED FURNACE
IA M O N
D
D
8 0
CONTENTS
HOW YOUR GAS FURNACE WORKS .2
KEEP THE FURNACE AREA CLEAR . . .2
START-UP & SHUTDOWN GENERAL
INSTRUCTIONS . . . . . . . . . . . . . . . . . . .2
FOR YOUR SAFETY, READ BEFORE
OPERATING: . . . . . . . . . . . . . . . . . . . . . .3
WHAT TO DO IF YOU SMELL GAS: . . . .3
LIGHTING INSTRUCTIONS . . . . . . .3
SHUTDOWN INSTRUCTIONs . . . . . . . .4
TURNing OFF GAS TO FURNACE . . . . 4
YOUR FURNACE'S FILTER -
WHAT IT DOES . . . . . . . . . . . . . . . . . . . .4
FREQUENCY OF CHECKING
FILTERS . . . . . . . . . . . . . . . . . . . . . . . . . .4
UPFLOW/HORIZONTAL . . . . . . . . . . . . .5
INSTALLATIONS . . . . . . . . . . . . . . . . . . .5
LOCATING/REMOVING FILTERS . . . . .5
HOW TO CLEAN YOUR FURNACE'S
FILTER . . . . . . . . . . . . . . . . . . . . . . . . . . .5
MOTOR LUBRICATION . . . . . . . . . . . . . .5
INSTALLATION & MAINTENANCE
INSTRUCTIONS . . . . . . . . . . . . . . . . . . . 5
KEEP THIS MANUAL FOR
FUTURE REFERENCE
WARNI NG: If the information in this manual is not
followed exactly, a fire or explosion may result
causing property damage, personal injury or loss of
life.
- Do not store or use gasoline or other flammable
vapors and liquids in the vicinity of this or any other
appliance.
- WHAT TO DO IF YOU SMELL GAS
ï Do not try to light any appliance.
ï Do not touch any electrical switch; do not use any
phone in your building.
ï Immediately call your gas supplier from a neigh-
borís phone. Follow the gas supplierís instructions.
ï If you cannot reach your gas supplier, call the fire
department.
- Installation and service must be performed by a
qualified installer, service agency or the gas
supplier.
035-14411-000 REV A (899) Form 650.74-O2Y
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035-14411-000 REV A (899) Form 650.74-O2Y
Congratulations . . .
On your purchase of one of the most versatile furn aces available in the industry today. This compact, energy-efficient furnace
has been precision designed, manufactured of high-quality materials and has passed many rigorous inspections and tests to
ensure many years of satisfactory service. This booklet is meant to increase your understanding of your unit, tell you how to
operate it efficiently and how to obtain the greatest measure o f comfort at the lowest operating expense. Please r ea d this booklet thoroughly. We appreciate your interest in our product and your decision to purchase our furnace. Enjoy your comfort.
HOW YOUR GAS
FURNACE WORKS
Your furnace is a very easy appliance to take for granted. Season
after season, it sits there in your
home, keeping you warm and comfortable. For this reason, you may
never have given muc h thought to
the way your furnace operates. In
order to get the safest and most
efficient operation from your furnace, though, you should understand how your furnace does its
job.
When you set your thermostat to
provide more heat in your home,
you are starting the heating cycle of
the furnace. First, the inducer
motor starts to purge the heat
exchanger of any remaining gasses. Next, the hot surface ignitor
glows and after a warm --up period
the gas valve opens and ignition
occurs. A short time later the
blower starts and distributes the
warm air throughout the home.
When the temperature set on your
thermostat is reached, the gas
valve closes, the main bur ners are
turned off, and the blower continues to run until the remaining warm
air in the system is distributed.
When the blower stops, the heating
cycle has ended.
KEEP THE FURNACE
AREA CLEAR
NEVER . . . use the area around
your furnace as a storage area for
items which could block the normal
flow of air. This flow of air is
required for ventilation of the various furnace components.
WARNING
Do not block or obstruct
air openings:
1. On the furnace.
2. Air openings communicating
with the air in which the furnace is installed.
3. The spacings around the furnace.
NEVER. . . store flammable mater i-
als of any kind near your furnace.
Gasoline, solvents, an d other volatile liquids shou ld be stored only in
approved containers outside your
home. These materials vaporize
easily and are extremely dangerous.
NEVER. . . store cleaning materials
near your furnace. Materials such
as bleaches, detergents, powde red
cleansers, etc., can cause corrosion of the heat exchangers.
WARNING
Insulating materials may
be flammable.
When a furnace is
installed in an attic or
other insul ated s p ac e, or if
insulation is added, examine the furnace area to
ensure that the furnace is
kept clear and free of
insulation.
[
STA RT-UP & SHUT-
DOWN - GENERAL
INSTRUCTIONS
Read and follow these p rocedures
CAREFULLY and COMPLETELY.
Before attempting to start your furnace, always do the following
things FIRST:
ï Turn the thermostat OFF.
ï Open windows or make other
provisions to ventilate the area
around the furnace.
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035-14411-000 REV A (899) Form 650.74-O2Y
ï If the blower is running, wait
until it shuts off automatically.
WARNING
Turn off all electrical
power to the furnace.
ï Make sure all metal surfaces of
the furnace have cooled to
room temperature before
beginning.
FOR YOUR SAFETY,
READ BEFORE
OPERATING:
WARNING
If you do not follow these
instructions exactly, a fire
or explosion may result,
causing property dam age,
personal injury or loss of
life.
a. This appliance does not have a
pilot. It is equipped with an ignition device which automatically
lights the burners. Do not try to
light the burners by hand.
b.
BEFORE OPERATING, smell all
around the appliance area for
gas. Be sure to smell next to
the floor because some gas is
heavier than air and will settle
on the floor.
[
WHAT TO DO IF YOU
SMELL GAS:
ï Do not try to light any appliance.
ï Do not touch any electrical
switch; do not use any phone
in your building.
ï Extinguish any open flame.
ï Immediately call your gas sup-
plier from a neighbor's phone.
Follow the gas supplier's
instructions.
ï If you cannot reach your gas
supplier, call the fire depart-
ment.
c. Use only your hand to operate
ON/OFF switch or to turn the
gas control knob. Never use
tools. If the knob will not turn
by hand, don't try to repair it.
Call a qualified service techni-
cian. Force or attempted repair
may result in a fire or explo-
sion.
WARNING
Do not use this furnace if
any part has been under
water. Immediately call a
qualified service technician to inspect the furnace
and to replace any part of
the control system and
any gas control which has
been underwater.
LIGHTING
INSTRUCTIONS
1. STOP! Read all preceding
safety information.
2. Set the thermostat to lowest
setting.
3. Turn off all electrical power to
the appliance.
4. This furnace is equipped with
an ignition device which automatically lights the burners. Do
not try to light the burners by
hand.
5. Remove the control access
panel.
6. Turn gas control switch to OFF.
7. Wait five (5) minutes to clear
out any gas. If you then smell
gas, STOP! Follow step B in
the preceding safety information. If you don't smell gas, go
to the next step.
8. Turn gas control switch to ON.
Do not force.
9. Replace control access panel.
10. Turn on all electrical power to
the appliance.
11. Set thermostat to the desired
setting.
12. The unit will go through a 17second igniter warm-up period.
Then if the unit does not light
within 7 seconds, the unit will
go through two additional
cycles before locking out.
13. If the furnace will not operate,
shutdown furnace per the following instructions and call
your service technician or gas
supplier.
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035-14411-000 REV A (899) Form 650.74-O2Y
TO GAS
PLY
T
S
SHUTDOWN
INSTRUCTIONS
TURNING OFF GAS TO
FURNACE
CAUTION
Should overheating occur,
or the gas supply fail to
shut off, shut off the m ain
manual gas valve to the
furnace before shuttin g off
the electrical supply.
Set thermostat to the lowest setting.
SUP
O GAS
UPPLY
EXTERNAL MANUAL
SHUTOFF VALVE
GROUND JOINT UNION
MAY BE INSTALLED
INSIDE OR OUTSIDE UNIT
2. Remove the control access
panel.
3. Turn gas control switch to
ìOFFî. If gas valve is equipped
with a control knob - turn knob
clockwise to ìOFFî position.
4. Replace the control access
panel.
HONEYWELL VR8205 GAS
VALVE
Wiring
Wrench
Boss
Inlet
Terminals
Outlet
ing parts of the furnace, where they
could cause serious damage. It
also keeps the dirt from circulating
through your home.
As the filter continues to collect
these particles, it becomes clogged
and no longer allows enough air to
circulate through the furnace. If this
happens, the heat exchangers and
blower motor could overheat; a
potentially dangerous situation. It is
very important to keep the air filter
clean! Never operate your furnace
without a suitable air filter.
WARNING
When replacing filters DO
NOT use a type with
excessively high pressure
drop. Some high efficiency
filters available will cause
the furnace to operate
improperly and could re sult
in a safety hazard.
DROP LEG
GAS VALVE
TYPICAL GAS PIPING
1. Set thermostat to the lowest
setting.
WARNING
Turn off all electrical
power to the furnace if
service is to be performed.
ON - OFF Switch
WHITE-RODGERS 36E24
GAS VALVE
Main
Regulator
Adjust
Outlet
Pressure
Tap
YOUR FURNACE'S
FILTER - WHAT IT
DOES
The filter in your fu rnace takes the
lint and dust out of the air that
passes through it. This keeps dirt
particles from getting into the mov-
FREQUENCY OF
CHECKING FILTERS
Clean or change your furnace's filter at least every three months. If
you need to replace a filter, replace
it with the same type or contact a
qualified service person.
If your home is new, you should
check the filter ev ery week for the
first four weeks after you begin to
use the furnace, and then at leas t
every three weeks after that, especially if the system runs constantly.
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035-14411-000 REV A (899) Form 650.74-O2Y
K
LOCATING/REMOVING
FILTERS
WARNING
Turn off ALL electrical power
to the furnace when conducting any service or inspection
procedure. Furnace may h ave
isolated electrical supplies one providing power to the
Circulating Blower (230V or
115V) and another supplying
the control circuit (115V) which
controls the Circulating
Blower. The spring loaded
safety cutoff switch, mounted
to the blower deck DOES NOT
interrupt ALL electrical potential in the blower compartmen t
when the blower access panel
is removed.
Filters are to be appl ied externa l to
the furnace cabinet and are typically installed in return-air ducting.
Return-air duct(s) may consist of
either bottom only, or bottom and
one side. Single-side or Dual-side
returns are NOT ALLOWED.
NOTE: Some installations may
have more than one return duct
and each duct may have more than
one filter.
Clean or replace al l filter s in acco rdance with the recommendations
above. Replace any filter with the
same type filter and consult a qua lified service person if filter substitution is necessary. When servicing
the filter(s) observ e direction o f airflow on reassembly. Filters should
completely cover the sheet metal
opening of the ductwork to be
effective. Filters should not shift
collapse or dislodge from the
installed position during operation.
A factory supplied (external) Bottom-return Filt er A cce ss or y i s a vail able. This accessory kit requires
the use of (2) 16" x 28" x 1" washable (woven) filters o r (2)16" x 28"
x 2" disposable (Fiberglas) filters.
Filters for this kit ca n be accessed
by removing the snap-on cover
plate and sliding the filters out of
their support frames. F ilter s are no t
supplied with this kit.
F L O O R
E X T E R I O R F I L T E R R A C K &
B O T T O M M O U N T F I L T E R
EXTERIOR FILTER RACK &
BOTTOM MOUNT FILTER
R E T U R N A I R
D U C T ( S )
E X T E R N A L F I L T E R R A C
T Y P I C A L S I D E F I L T E R
A P P L I C A T I O N
HOW TO CLEAN YOUR
FURNACE'S FILTER
High-velocity filters may be
cleaned with a vacuum cleaner or
washed with a garden hose. Be
sure to shake off excess water
before re-installing the filter.
MOTOR LUBRICATION
The motors in these furnaces are
permanently lubricated, and
require no periodic oiling.
INSTALLATION &
MAINTENANCE
INSTRUCTIONS
YORK strongly rec ommends regular periodic preventative maintenance on this equipment.
In order to ensure safe, reliable
operation and long product l ife, it
is recommended that the entire
heating system be inspected
annually by a qualified service
person.
The person most familiar with the
equipment in your system is a
YORK dealer. The YORK dealer
can ensure your ma intenance program meets the conditions of the
ìYORK Warrantyî, maximize the
efficiency of the equipment, and
service your unit within the mandated guidelines with regard to
unlawful discharge of refrigerants.
The inspection should include
heating elements and vent piping
to see that they are clear and free
of obstructions and without holes or
corrosion. Make sure the horizontal
run of the vent system slopes
upward and all of the con nections
are secure. Make sure the return
air duct connections are physic ally
sound and sealed to the furnace
casing. Make sure no sagging,
cracks, gaps, etc. exist around the
base of the furnace.
Routine periodic maintenance
checks should be done on your furnace at least every time you check
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035-14411-000 REV A (899) Form 650.74-O2Y
the filters. Proper burner flame
appearance is shown below.
BLUE CONE PORTION OF
FLAME SHOULD ENTER HEAT
EXCHANGER TUBE.
Blue cone portion of flame should
enter heat exchanger tube
PROPER BURNER FLAME
APPEARANCE
CAUTION
Before proceeding, be
sure the area is well ventilated. Turn the thermostat OFF. I f the blower is
running, wait until it stops
automatically. Turn OFF
the gas and electrical
power supplie s to the furnace. Check all metal
parts and surfaces to be
sure they have cooled to
room temperature before
you begin.
Remove the front panels and turn
the gas control to the OFF position.
Check the following items:
ï Check for dust and lint on the
sensor and main burners.
ï Check the vent pipe and chim-
ney for blockage, corrosion or
leakage or any obstructions.
ï Check all components to be
sure they are in good condition
and that there are no obvious
signs of deterioration.
If all components appear to be in
good operating condition, turn the
gas control to the ON position.
Replace the front panels. Restore
gas and power supplies to the fur nace, and set thermostat to the
desired temperature.
If, during your inspection of your
furnace, you find any of the following conditions, do not operate the
furnace:
ï Excessive amounts of dust and
lint on components.
ï Damaged or deteriorated com-
ponents or surfaces.
ï Leaks or blockage in the vent
pipe passages.
Call a certified servi cing contractor
to check your furnace, or for mor e
information if you have questions
about the operation of your furnace.
6 Unitary Products Group
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035-14411-000 REV A (899) Form 650.74-O2Y
SERVICE RECORD
Unitary Products Group 7
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035-14411-000 REV A (899) Form 650.74-O2Y
SERVICE RECORD
Subject to change without notice. Printed in U.S.A.
Copyright © by Unitary Products Group 1999. All rights reserved. Supersedes: 650.74-O2Y (1198) 650.74-O2Y (899)
Unitary 5005 York Norman
Product Drive OK
Group North 73069
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