Amana AIR COMMAND 80 User manual

a
AIR COMMAND
80
Model GUI
(U pf
low)
GAS
FIRED WARM AIR
FURNACE
installation
operation
INSTRUCTIONS
IMPORTANT TO
THE
INSTALLER
Before installing this
unit
please read this
manual to
familiarize
yourself on
the
specific items which must
be adhered
to such as
maximum
external
static pres-
sure to
unit, air temperature
rise,
min. or max. cfm
and
motor
speed
connections.
Affix
these
Installation
Instructions adjacent to the
furnace.
TO
THE
OWNER
It
is
important that you fill
out the owner's registration
card and
mail
it today.
When filling in
the
registration
card, be sure
to include the
Model, Manufacturing
and
Serial Numbers, plus the installation date.
Your warranty certificate
is also supplied
with
the unit.
Read the warranty
carefully
and
note what is covered.
Keep the warranty certificate in
a safe place, so you
can
find it,
if
necessary.
If
additional operating instructions are required, call
the
dealer through whom the purchase
was made.
Keep this
literature in a safe place
for
future
reference.
A
WARNING
Should
overheating occur or the
gas
supply fail to shut off,
turn off
the manual gas
control
valve to the
furnace
before
shutting off the elec-
trical
supply.
A
WARNING
FOR
YOUR SAFETY
Do
not
store
or use gasoline
or
other flammable
vapors and liquids
in the
vicinity of this
or any
other
appliance.
A
RECOGNIZE THIS SYMBOL
AS
A SAFETY PRECAUTION.
A
WARNING
Improper installation,
adjustment, alteration, serv-
ice or
maintenance can
cause injury
or
property
damage
or
death.
Refer
to this
manual.
For
assistance
or
additional information
consult
a
qualified
installer,
service agency or
the gas
supplier.
A
WARNING
FOR YOUR
SAFETY
WHAT
TO DO
IF YOU
SMELL
GAS
•
Do not try
to light
any
appliance.
• Do
not touch any electrical
switch;
do
not
use
any
phone in your building.
• Immediately call your
gas supplier
from a neigh-
bor's phone. Follow
the gas
supplier's
instructions.
• If
you cannot reach your
gas supplier, call
the
fire
department.
THE
INSTALLATION
AND SERVICING
OF
THIS
EQUIPMENT SHOULD
BE PERFORMED
ONLY
BY
QUALIFIED, EXPERIENCED
TECHNICIANS.
Due
to policy of
continual product
improvement, the
right is reserved to
change specifications
and design
without notice.
100266-8
Rev. 1

Induced
Draft Gas Furnace Specifications
Upflow
Model
BTUH
Temp.
Rise
Range, °F
Number of
Burners
Size
F.L.A."
Blower
D
x W
Type
Blower
Horsepower
Blower
Speeds
Max. CFM
@
.5 ESP
Filters
Net
Weight
Approx.
Ship
Weight
Input Output
Size Type Oty.
GU1045B256 45,000 36,000 35-65
2 10.1
9x8
PSC
/1 3 1050
16x25x1
Semo-Permanent
1
132 145
GU1070B30B 70,000 55,000 35-65
3 13.6
10x8
PSC 1
/.a 4 1275 16x25x1
Semi
-Permanent
1
148
161
GU1070B40B 70,000
55,000 35-65 3 15.6 10x8 PSC
b 4
1700
16x25x1 Semi
-Permanent
2 148
161
176
GU1090B30B 90,000 71,000 45-75
4 13.6
10x8
PSC
V 4 1220 16x25x1
Semi
-Permanent
1
160
GU1090B50B
90,000
71,000 35-65
4 17.7
10x10 PSC
/1
4 2125 16x25x1
Semi
-Permanent
2
160 178
GU1115B35B 115,000 91,000 40-70
5 15.6 10x10 PSC
7, 4 1800 16x25x1
Semi
-Permanent
1
178 196
GUI115B50B 115,000 90,000 45-75
5 17.2 10x10 PSC
3 / 4
3 2125 16x25x1
Semi
-Permanent 2 178 196
GU1140B35B 140,000 110,000
45-75 6
15.6
10x10 PSC
/, 4
1750
16x25x1 Semi
-Permanent
1 188 206
GUI140B50B
140,000
111,000 45-75
6 17.2
10x10
PSC
/ 3 2050 16x25x1
Semi
-Permanent 2 188
206
"Includes 5
amps
drawn
by
ignitor during
45
-second s
art
up cycle.
UPFLOW
a
~
~
A B—+~
k---
o
I
BOTTOM KO
a8s
I
u
28
2O%
a½
•-4j
,ELECTRICAL
4i4i
31V
sous
®
GAS
SUPP
~
t OT SID L
ES)
I
F
_-_ 23
—1
1 .
SIDE KO
J
23
I
aouOM KO
1
NOTES:
1. All furnaces have a redundant gas valve and
blower door
inter
-lock switch.
2. All
furnaces are
manufactured for use on 120V, 60 Hertz
and single phase
electrical power supply.
3. Important: While
the data is presented as a guide it is
very
important
to
electrically connect
the unit and
properly size fuses and
wires in
accordance with the
National Electrical Code and/or
all
Existing Local Codes.
4. Performance fi gures are based
on
Department
of Energy
information
and
requirements under continuous operating
conditions. Performance
will vary with weather
conditions
and use.
(All
dimensions in
inches)
A B C D E F
GU1045 16 1 / 2 15
6 1
/ 8
10 1
2 5 / 1
6 3
GU1070
16½
15 61 10 1 2 5 /I6 3
GU1090 20 1
/ 2
19 8 1 /
6
14 1 2 5
/ 1 6 3
GUI115
24½
23
10 1 / 6 18 1
/ 2 2t 3
/ 1
8 4
GU1140 24½ 23
10 1 / 6 18 1 /
2 2 13
/
1
6 4
Specifications subject
to change without
notice.
Amana GUI
Series Forced
Air Central
Furnace Design
Complies
With
Requirements Embodied In The Amer-
ican
National Standard
Shown
Below.
ANSIZ21.47 Central Furnaces
2

CFM
& Temperature Rise
vs
a
External
Static Pressure
Model
Motor
Speed
External
Static
Pressure, Inches Water
Column
0.2
0.3
0.4
05 0.6" 0.7" 0.8"
CFM Rise
CFM Rise CFM
Rise CFM
Rise
CFM Rise CFM
Rise CFM Rise
LO
690 48
675 49
660
51
640
52
590 54
530 60 450 -
GU1045B25B
MED
965 -
950 -
915 36
875 38
820 39
760 42
675
47
HI
1240 - 1170 -
1100 -
1050 -
950 -
870 37
780 41
LO
725 - 720 -
700 -
675 -
580 -
515 420
-
GU1070B30B M
-LO
935 55 920 56
900 58
865 60
820 61
770 -
690 -
MED
1190 44
1150 45
1115
47
1065 49
1010 49
945 53 860
56
HI
1470 - 1410 37
1345 39
1275 41
1200 42
1110
45 1000 50
LO
1135 46 1135 46 1130
46
1125 46 1095
46
1070 47 1035
48
GU1070B40B M
-LO
1340 39 1335 39
1325 39
1300 40
1270 39
1235 40 1180 42
MED
1570 - 1560 -
1525 -
1485 -
1450 -
1400
36
1330
37
HI
1895 -
1835 - 1775 -
1700 -
1630
1550 - 1450
e
LO 850 -
830 - 800 -
775 -
730 m 680 -
610
GU1090B30B M -LO
910 73
900
74
870 -
840 -
800 - 750 -
690
MED
1120 60
1080 62
1050 63
1010 66
960 67
900 72 820 -
HI
1395 48 1335 50
1275 52
1220 55
1150
56
1065
61
970 67
LO
1230
54
1220 55 1210 55
1200
56 1170 55
1135 57 1090
59
GU1090BS0B
M -LO
1530
44
1525
44
1520
44
1515
44
1485 44
1455 44 1410 46
MED
1770 38
1770 38 1755 38
1725 39
1700 38 1660
39 1600 40
HI
2330 -
2280 - 2220 -
2125 -
2055_ -
1965 - 1850 -
LO 1180 -
1175 - 1150 -
1125 -
1090 -
1050 - 995 -
GUI115B35B M -LO
1410 60 1400 61 1375
62 1350
63
1310 64
1265 66 1200 69
MED
1655
51
1645 52
1620 53
1575
54
1480 56
1410 59 1310 64
HI 2000
43 1950
44
1875 45
1800
47
1725 48
1630 51 1520
55
LO 1530
56 1520 56 1500 57
1475 58
1430 58 1370
61 1280 65
GUI115B50B MED 1730
49 1720 50
1700 50
1675 51
1620 51
1560 53 1470 57
HI
2375 -
2275 - 2200 _ -
2125 -
2030 -
1920
1760 47
LO
1160 - 1150 - 1135 -
1124 -
1090 - 1040
980
GUI140B35B M
-LO 1330 -
1315 - 1295 -
1275 -
1230
1175 - 1100 -
MED
1585 65 1560 66 1525
68 1475
70
1425 71 1340 - 1230 -
HI
1930
54
1875 55 1835 57
1750 59
1680 60 1600 63 1480
68
LO 1490 70
1470
71
1450 72
1425 73
1380
_
73 1330 - 1260 -
GU1140B50B MED
1660 62 1650
63 1635 63
1625
64
1590
64 1550
65 1490 68
HI
2290 - 2230 47
2130 49
2050
51
1960 52
1850 55 1700 59
NOTE:
1. CFM in chart
above, is
with filter(s as
shipped
with
furnace.
2.
INSTALLATION IS TO BE
ADJUSTED
TO OBTAIN TEMPERATURE RISE WITHIN THE RANGE SPECIFIED ON THE RATING PLATE.
3.
The above
chart is for information only. For satisfactory operation, external
static pressure should not exceed value
shown on
rating
plate.
The shaded area indicates
ranges in
excess of maximum external
static pressure allowable
when heating.
4.
The above
chart is for
U.S.
furnaces
installed at 0-2000 feet. At
higher
altitudes, a
properly
derated unit
will
have
approximately
the same temperature rise at a
particular CFM,
while the
ESP
at that
CFM will
be
lower.
GENERAL INSTALLATION
INFORMATION TRANSPORTATION DAMAGE
A
WARNING
Improper
installation,
repair,
operation or
maintenance
of
this
product
may result
in
property damage,
bodily injury
or death
from
hazards
such
as
fire, explosion,
smoke,
soot, condensation, electric
shock or carbon
monoxide.
This is an upflow type furnace
for installation in a basement,
closet,
or utility room. To assure that
your furnace
operates
safely and
efficiently,
it
must be installed, operated and main-
tained in accordance
with these installation and operating
instructions, the
venting
manual, all local building codes and
ordinances,
or, in their absence, the latest
edition of the
National
Fuel
Gas
Code, ANSI
Z223.1 *.
The normal
heating capacity
of
the
furnace should
be
greater
than or equal
to the
total heat loss
of the house or
structure.
The
total
heat loss
should be
calculated by an
approved
method or in accordance
with
"A.S.H.R.A.E.
Guide"
or
"Manual
J -Load
Calculations"
published by the Air Condi-
tioning Contractors of America.
Do not
install this
furnace
in
a
mobile
home, trailer, or recrea-
tion vehicle.
*Obtain
from:
American
National Standards
Institute
1430
Broadway
New
York, NY
10018
All
furnaces
are
securely
packed
in shipping
containers
approved by
the
National
Safe Transit Committee. The carton
should be
checked
upon arrival for external
damage. If
damage is
found, a request
for
inspection by carrier's agent
should be made in writing immediately.
The furnace should be carefully inspected upon arrival for
damage and bolts or
screws which may have loosened in
transit. In
the event of damage, the consignee should:
1.
Make notation on delivery receipt of any
visible damage
to shipment or container.
2. Notify carrier
promptly and request an inspection.
3.
In
case
of
concealed damage, carrier should
be notified
as
soon
as possible —
preferably
within 5 days.
4.
File the claim with the
following
supporting documents
within
the 9 -month statute
of
limitations.
a. Original Bill of Lading, certified copy, or
indemnity bond.
b.
Original
paid freight
bill or
indemnity in lieu
thereof.
c.
Original
invoice
or certified
copy thereof, showing
trade and
other discounts or
reductions.
d. Copy of the
inspection
report
issued
by carrier's repre-
sentative at the time damage is reported
to
the carrier.
The carrier
is responsible
for
making prompt inspection of
damage and for a thorough investigation of each claim.
The
distributor or manufacturer will
not accept claims
from deal-
ers
for
transportation
damage.
3

LOCATING THE FURNACE
A
WARNING
To
avoid possible
equipment
damage,
fire,
personal injury or death,
the
follow-
ing points must
be
observed when in-
stalling
the
unit.
A
A
A
A
A
A
A
A
Do not install
the furnace
where combustion air for
the
furnace
is
frequently heavily contaminated with com-
pounds
containing chlorine or fluorine. Common
sources of such
compounds
include:
indoor
swimming
pools and chlorine bleaches, paint strippers, adhesives,
paints, varnishes, sealers, waxes
(which
are not yet
dried)
and solvents used
during construction
and
remodeling. Various commercial and industrial proc-
esses may also be sources of chlorine/fluorine
compounds.
If the furnace is installed
near an
area which will be fre-
quently
contaminated by chlorine/fluorine compounds,
the furnace should be sealed from this area so
that little
contaminated air can reach the furnace. The
furnace
must still
have an adequate
supply of
combustion
air,
either from
a
neighboring
uncontaminated
room or from
outdoors. For details, see the "Combustion and Ventila-
tion Air"
section below.
The
furnace
should
be
set on a level floor. If the floor may
become wet
or
damp at times, the furnace should be
supported above the
floor
on a concrete base sized
approximately 1'/2" larger
than
the base
of
the furnace.
The furnace should be as centralized
as is practical with
respect to the
air distribution
system.
Provisions must be made
for venting
combustion prod-
ucts outdoors
through
a
proper venting system
as out-
lined
in
the
Venting Manual.
The length
of
flue pipe could
be a
limiting factor
in
locating
the furnace.
For
details,
see
the Venting Manual
shipped
with
the furnace.
Allow clearances from
the enclosure as
per
Table
1 for
fire protection, proper operation,
and service access.
These
clearances must be
permanently
maintained. The
combustion
and
ventilating air openings in the front
and
top
panels of
the furnace
must never be
obstructed.
When
installed in a residential garage the furnace must
be positioned so the burners and
ignition
source are
located not less than 18
inches above
the floor
and pro-
tected from
physical
damage by vehicles.
Do not install the furnace directly on carpeting,
tile,
or
other combustible material other
than wood flooring.
CLEARANCES TO
COMBUSTIBLE SURFACES.* (inches)
TABLE 1
Front 6
Left
1
Right
2**
Rear 0
Top
1
Flue 6*
Floor
C
C = Combustible
Floor
(Wood
Only)
* = May be 1 " if Type B vent is used.
* * = 2" clearance
for GU1045B25A, GU1070B30A,
&
GU1070B40A only
(May be
1" when
Type
B vent
is
used.) All others may be
1".
ACCESSIBILITY CLEARANCES (MINIMUM)
36" at front is required for servicing
or
cleaning.
NOTE: In
all
cases
accessibility clearance shall
take prece-
dence
over
clearances
from the
enclosure where
accessibility clearances are
greater.
COMBUSTION AND VENTILATION AIR
A
WARNING
Property damage,
bodily
injury or death
may
occur if
the furnace
and
any other
fuel -burning
appliances
are
not
provided
with enough fresh
air for proper
combus-
tion
and ventilation of
flue gases. Most
homes
require outside air
to be supplied
into the
furnace area.
mproved construction and
additional
insulation
in
homes has
reduced the heat loss and made these homes much
tighter
around
door
and windows so that
air
infiltration is
minimal.
This creates a problem to supply combustion
and
ventilation
air for gas
fired
or other fuel burning
appliances. Any use
of
appliances that
pull air
out of the house (clothes dryers,
exhaust fans, fireplaces,
etc.) increases this
problem
and
appliances could be starving for
air.
In
addition,
these energy
saving
measures
mean that your
home
will
retain more
water vapor
and have a
higher
relative
humidity. High humidity,
especially during
cold
weather,
may
be damaging to buildings because
condensation
forms
on
windows and inside walls.
AIR REQUIREMENTS
Most
homes
will require that
outside
air
be supplied to the
furnace area by means
of
ventilation grilles
or
ducts
connect-
ing directly to the outdoors or
spaces
open to the
outdoors
such
as attics
or crawl
spaces. The
following
information on
air for combustion
and ventilation is reproduced from
the
National Fuel Gas Code NFPA54/ANSI Z223.1 Section
5.3.
5.3.1 General:
(a) The provisions of 5.3 apply
to
gas utilization
equipment
installed in buildings and which require air for combustion,
ventilation and dilution of flue
gases
from within
the building.
They do not
apply
to (1) direct vent
equipment which is
con-
structed and installed so that all air combustion
is obtained
from the outside
atmosphere and
all
flue gases are dis-
charged to
the outside atmosphere, or (2)
enclosed furnaces
which
incorporate an
integral
total
enclosure and use
only
outside
air for
combustion and dilution
of flue gases.
(b) Equipment shall be
installed
in
a location in which
the
facilities
for ventilation
permit satisfactory combustion of
gas,
proper
venting and the maintenance of
ambient temperature
at safe limits under normal
conditions of use. Equipment
shall
be located so as not to
interfere with
proper
circulation
of air. When
normal infiltration
does not provide the neces-
sary air,
outside
air
shall be
introduced.
(c) In addition to air
needed for combustion,
process
air
shall
be provided as
required
for:
cooling of equipment or material,
controlling dew point,
heating, drying, oxidation or
dilution,
safety
exhaust, odor control,
and
air for
compressors.
(d)
In
addition
to
air
needed
for
combustion, air shall
be
applied for
ventilation,
including
all
air
required for
comfort
and proper
working
conditions
for
personnel.
4

( ea While
all
forms
of building construction cannot be covered
in detail, air
for combustion,
ventilation and dilution of flue
gases
for gas utilization equipment
vented by
natural draft
normally may
be
obtained by
application
of one of the meth-
ods
covered in 5.3.3 and 5.3.4.
(f) Air
requirements for
the operation of exhaust fans, kitchen
ventilation systems, clothes dryers, and fireplaces
shall
be
considered in determining
the
adequacy of a space to
pro-
vide
combustion air
requirements.
5.3.2 Equipment Located in
Unconfined Spaces:
In
uncon-
fined spaces in buildings infiltration may be
adequate
to pro-
vide
air for combustion, ventilation, and dilution of
flue gases.
However, in buildings
of unusually
tight construction addi-
tional air shall be provided using the methods
described
in
5.3.3-b or 5.3.4.
Space, Unconfined.
For
purposes
of
this Code, a space
whose volume is not less
than
50 cubic feet per 1,000 Btu per
hour of
the aggregate
input rating of all
appliances installed
in
that space. Rooms
communicating directly
with the space
in which the appliances are installed, through
openings
not
furnished
with
doors,
are
considered a part of the uncon-
fined space.
5.3.3 Equipment
Located in
Confined Spaces:
(a)
All
Air
from
Inside the
Building:
The confined space
shall
be provided with two permanent openings communicating
directly
with an
additional
room(s) of sufficient volume so that
the combined volume
of all
spaces meets the criteria
for an
unconfined space. The
total
input of all gas utilization equip-
ment installed in the combined space shall
be considered
in
making this
determination.
Each opening shall have
a
mini-
mum free area of 1 square inch per
1,000 Btu
per
hour of the
total
input
rating
of all gas utilization
equipment
in
the con-
fined space, but not less than 100
square inches. One open-
ing shall be within 12 inches of the
top and one within 12
inches
of
the bottom of the enclosure.
(See Figure
1.)
CHIMNEY or
GAS
VENT
OPENINGS
Note: Each opening
shall
have a
free area
of
not less than
one square
inch per
1,000
Btu
per
hour of
the total
input
rat-
ing of all
equipment in the
enclosure, but not
less
than
100 square
inches.
Fig. 1.
Equipment Located
in
Confined Spaces;
All Air from inside
the Build-
ing. See
5.3.3-a.
(b)
All Air From
Outdoors: The confined
space
shall
be pro-
vided
with
two permanent openings, one commencing
within
12 inches of the top
and one
commencing within 12
inches of
the bottom of the
enclosure.
The openings shall communi-
cate
directly, or by
ducts, with the outdoors
or
spaces (crawl
or
attic)
that freely
communicate with the outdoors.
y ,
1. When directly
communicating with
the
outdoors, each
opening shall
have a
minimum
free area of
1
square
inch
per
4,000 Btu
per hour of
total
input
rating of all equip-
ment in the enclosure. (See Figure 2.)
CHIMNEY or
GAS VENT
VENTILATION
LOUVERS
(each
end
of
attic)
ALTERNATE
AIR INLET
VENTILATION
LOUVERS
FOR
UNHEATED CRAWL
SPACE
Note:
The
inlet and out-
let
air openings
shall
each have a free
area of
not less
than
one square
inch
per
4,000 Btu
per
hour of
the
total
input rat-
ing of all equipment
in
the
enclosure.
Fig. 2.
Equipment Located
in
Confined
Spaces;
All Air from
Outdoors — Inlet
Air
from Ventilated Crawl
Space and Outlet
Air
to Ventilated Attic. See
5.3.3-b.
2.
When communicating
with
the outdoors through vertical
ducts, each opening
shall have a
minimum free area of 1
square inch per 4,000 Btu per
hour of total
input rating of
all
equipment in the
enclosure.
(See Figure 3.)
CHIMNEY or
GAS VENT
VENTILATION
LOUVERS
leach
end
of
attic)
Note: The inlet and out-
let air
openings shall
each
have a
free area of
not less than
one
square
inch per
4,000
Btu
per
hour of
the total
input rat-
ing of all
equipment in
the
enclosure.
INLET AIR DUCT
(ends
1 ft.
above
floor)
Fig. 3.
Equipment
Located
in Confined
Spaces; All Air from
Outdoors
Through ventilated Attic. See 5.3.3-b.
3. When
communicating with
the outdoors through horizon-
tal
ducts,
each
opening shall
have a minimum free area
of 1
square inch per
2,000 Btu per
hour
of total input
rating of all
equipment in the
enclosure. (See Figure
4.)
4. When ducts
are used, they shall be of the same crosssec-
tional area as
the free area
of
the openings to which they
connect. The minimum dimension of rectangular air
ducts
shall
be
not
less than 3
inches.
5

CHIMNEY or
GAS
VENT
Note:
Each air
duct
opening shall
have a
free area
of
not less
than
one square inch
per 2,000
Btu
per
hour of
the
total
input
rating of all
equip-
ment
in
the
en-
closure.'
'If the
appliance
room
is located
against an
outside
wall
and
the
air
openings
communicate
directly with
the
outdoors, each opening
shall
have a free
area
of
not less
than
one
square
inch
per
4,000 Btv
per
hour of
the
total
input rating
of
all
appliances
in
the
enclosure.
Fig. 4.
Equipment
Located
in
Confined Spaces; All Air from Outdoors.
See
5.3.3-b.
5.3.4 Specially
engineered
Installations:
The requirements of 5.3.3 shall not necessarily govern when
special
engineering, approved by the authority having juris-
diction,
provides
an
adequate
supply of air for combustion,
ventilation,
and
dilution of flue gases.
5.3.5 Louvers and Grilles:
In
calculating free area
in
5.3.3, consideration
shall
be given
to the
blocking effect of louvers, grilles or
screens
protecting
openings. Screens used
shall
not be
smaller
than
1 / 4
inch
mesh. If
the area
through
a
design of louver or
grille is known,
it should be used in calculating the size of opening
required
to provide
the free
area
specified.
If
the
design
and free area
is
not known, it
may be assumed that wood louvers
will
have
20-25 percent free area and metal
louvers and
grilles will
have 60-75 percent free area. Louvers and grilles shall be
fixed
in the open position or
interlocked
with
the
equipment
so that they
are opened
automatically during equipment
operation.
5.3.6
Special
Conditions Created by
Mechanical
Exhaust-
ing
or
Fireplaces:
Operation of exhaust
fans,
ventilation systems,
clothes
dry-
ers,
or
fireplaces may create conditions requiring special
attention to avoid unsatisfactory operation of
installed gas
uti-
lization equipment.
VENTING
For information on venting,
please
ual
shipped with the furnace.
® WARNING
consult the venting man -
This furnace is
not
recommended
for
common venting application with other
induced draft appliances. Failure to
fol-
low these instructions
can
result in
bodily injury or death
from asphyxiation.
Therefore,
carefully
read and
follow all
instructions
given
in this section
and
the
venting manual instructions shipped
with
the furnace.
WHEN AN
EXISTING
FURNACE
IS
REMOVED
FROM,A
VENTING SYSTEM SERVING
OTHER
APPLIANCES, the
venting system may be too large to properly vent the remain-
ing attached appliances.
The following steps shall
be
followed with each
appliance
remaining
connected to the
common venting system
placed
in operation,
while
the other appliances remaining
connected
to the common venting
system are
not in operation.
(a) Seal any unused
openings
in the common venting system.
(b) Visually inspect the venting system for proper
size and
horizontal pitch and determine
there is
no
blockage
or
restriction, leakage, corrosion and other
deficiencies
which could cause an unsafe condition.
(c) Insofar
as
is practical,
close
all building
doors and win-
dows and
all
doors between the space
in
which the
appliances remaining
connected to the
common venting
system
are located and
other
spaces of
the
building. Turn
on clothes
dryers and
any
appliance not connected to the
common venting system. Turn on any
exhaust fans,
such
as range hoods and bathroom
exhausts, so they
will oper-
ate at maximum
speed. Do
not
operate a
summer
exhaust
fan.
Close
fireplace
dampers.
(d)
Follow
the lighting instructions.
Place the appliance being
inspected in operation. Adjust thermostat
so appliance
will operate continuously.
(e)
Test
for
spillage at the draft
hood
relief opening after 5
minutes
of
main
burner
operation.
Use the
flame of
a
match or
candle,
or
smoke
from
a
cigarette,
cigar, or
pipe.
(f) After
it has been determined that each appliance remain-
ing
connected to the common venting system properly
vents when
tested as outlined above, return doors, win-
dows, exhaust fans, fireplace
dampers and
any other
gas -
burning
appliance to
their
previous conditions of use.
(g) If improper venting is
observed
during any of
the above
tests, the
common venting system must be
corrected
in
accordance
with
the latest edition
of
the
National Fuel
Gas Code,
ANSI Z223.1.
If resizing any portion of the common venting system, use the
appropriate table
in Appendix
G in the latest
edition of
the
National Fuel Gas Code, ANSI Z223.1. Also consult the vent-
ing manual shipped with the
furnace.
DUCTWORK
—AIR
FLOW
Duct systems and
register
sizes
must
be
properly
designed
for
the C.F.M.
and
external
static pressure
rating of
the furnace.
Ductwork should be
designed
in
accordance
with
the recom-
mended methods
of "Air
Conditioning Contractors
of
America"
manual.
A duct system should be
installed
in
accordance with Standards
of the National
Board
of
Fire
Underwriters
for
the
Installation of
Air
Conditioning, Warm
Air
Heating
and Ventilating Systems,
Pamphlets No.
90A
and
90B.
Furnace models GU1045B25B,
GU1070B30B, GU1090B30B,
GU1115B35B and GUI140B35B
are
shipped
with
one
filter, (refer
to
Pg. 2 for
size), intended for the return air
duct to be attached
to either
side
of
the furnace cabinet. If
the
return air
duct is to be
attached to
the
bottom of
the
furnace cabinet, the
filter
that
was
supplied with the
furnace, may not
be
of
the
proper
size.
Refer
to the chart below
for
filter
sizes when using bottom
return.
BOTTOM
RETURN
AIR FILTERS
_Model
Filter
Size
Type
GU1045B25B,GU1070B(30,40)B 14 x
24 x 1
P
GU1090B(30,50)B
_
16
x
25x 1
P
GUI115B(35,50)B,GU1140B(35,50)B
20
x
25
x
1 P
6

Tqe
sketch
below shows how the
filter
is retained
over
the bot-
tom return
air opening.
FILTER RETAINER
FILTER
FURNACE BOTTOM
Furnace
models
GU1070B40B, GU1090B50B,
GU1115B50B and
GUI140B50B are shipped with two
filters (refer to Pg.
2 for
size).
If
these
furnaces are
to be operated at
high speed, then two
return air connections
must
be
made. These may
be made on
both sides
of
the
furnace cabinet,
or on one side and the bot-
tom. If one of the
returns is connected
to the bottom, refer to the
chart above
for
proper filter size. Failure to have two
return air
connections,
when these
furnaces are operated on high speed
can result
in insufficient
airflow for air
conditioning
require-
ments and
excessive
air velocity
through the filter. If these
fur-
naces
will not be
run on
high
speed, one
return air connection
will
be
adequate.
Guide dimples
locate the
bottom or
side
cutouts. Use a
straight
edge
to scribe lines
connecting
the dimples.
Cut out the
open-
ing on these lines.
For
bottom return air connection the bottom
of
the
cabinet has to
be removed before
the furnace is
posi-
tioned
on the raised
platform or
set
on
top
of
the
return
air
duct.
It is a must
that
a
closed
return
duct
system
be
used,
with
the
return duct connected to
the furnace. Supply and
return duct
connections to the
unit may be made
with
flexible
joints to
mini-
mize
noise
transmission. If a central return is used, a
connec-
ting
duct must
be
installed
between
the
unit and the utility
room
wall
so
the furnace
blower will not interfere with
combustion air
or draft. The
room, closet
or
alcove
must not be
used
as
a
return
air chamber.
When
the
furnace
is used
in connection with a
cooling unit
the
furnace
should
be
installed
in parallel with
or on
the
upstream
side of the
cooling
unit to avoid
condensation in the
heating
element.
With a parallel
flow
arrangement, the
dampers
or
other means used to
control the
flow of air
should be
adequate
to
prevent
chilled air from
entering the
furnace
and if
manually
operated,
must be equipped
with means to prevent
operation of
either unit unless the
damper is in the
full
heat
or cool position.
GAS
SUPPLY AND
PIPING
The rating plate is stamped
with
the
model number,
type
of
gas and gas
input rating.
Make sure
the furnace is equipped
to operate
on
the type
of
gas available.
GAS
TYPE
SUPPLY
PRESSURE
MAX
MIN
Natural
Propane
10.0"
14.0"
5.0"
11.0"
Inlet
gas
pressure
must not exceed the
maximum value
shown in
table
above.
The
minimum
supply pressure
should not be varied
down-
ward because this
could
decrease the
heating capacity of the
furnace.
Gas input to the
burners
should not exceed the rated
input
shown on
the
rating plate.
HIGH
ALTITUDE DEBATE
When this
furnace is installed at
altitudes
above 2000 feet,
the
furnace
input must be derated
4%
for each 1000 feet
above sea
level
because the
density of the
air is reduced.
In some
areas
the gas
supplier will derate the
heating value
of
the
gas at a rate of 4% for
each 1000
feet above sea
level.
If he does not do so,
smaller
orifices
will
be required
at
altitudes above 3500 feet (non-derated
natural
gas)
or 4500
feet (non-derated propane).
A
different pressure switch
will
be required at
altitudes more
than 4000 feet above sea
level. This
is required
regardless
of
the
heat
content
of
the
fuel
used.
High altitude kits can be purchased
depending upon the
altitude and usage
of
propane
or natural gas.
Adjustment
of
the
manifold pressure to a
lower pressure
reading
than what is specified on the
furnace
nameplate is
not a proper derate procedure.
With
a lower density
of air
and
a
lower manifold pressure at the burner orifice, the orifice
will
not
aspirate the proper amount
of air
into the
burner.
This
can
cause incomplete
combustion of the gas, flash
back,
and
possible
yellow tipping.
GAS PIPING
®
CAUTION
To avoid possible
unsatisfactory opera-
tion or equipment damage due to
under -
firing of equipment, do not undersize the
natural
gas/propane
piping from the
meter/tank
to the furnace.
When
sizing
per
the tables, include
all appliances
that
could be operated
simultaneously.
The
gas
pipe
supplying
the
furnace
must be
properly sized
based
on
the
cubic
feet
per hour
of gas
flow
required,
specific
gravity
of the
gas and
length of
the
run. The gas
line
installa-
tion must
comply
with
local codes,
or
in the
absence
of
local
codes,
with the
latest
edition of
the
National
Fuel Gas
Code
ANSI
Z223.1.
NATURAL GAS CAPACITY
OF PIPE
IN CUBIC FEET
OF
GAS
PER HOUR (CFH)
Length of
Pipe in
Feet
Nominal Black Pipe Size
'/2 " 3
/
4 " 1"
1'/4"
1'/2 "
10
132
278 520
1,050 1,600
20 92 190 350
730 1,100
30 73
152 285 590 980
40 63 130
245 500 760
50 56 115
215 440 670
60 50 105 195 400 610
70 46 96
180
370
560
80 43
90 170 350 530
90 40
84 160
320
490
100 38
79 150
305
460
CONNECTING THE
GAS
PIPING -
NATURAL
GAS
Refer
to
Figure 6
for
the
general layout at the furnace.
The
following rules apply:
1. Use black
iron or steel pipe and fittings
for the
building
piping.
2.
Use pipe
joint compound
on male threads only.
Pipe joint
compound
must be
resistant
to the
action of the
fuel used.
3. Use ground
joint unions.
4. Install a drip leg to trap dirt and
moisture before
it can
enter the gas valve. The
drip
leg
must be a
minimum of
three
inches long.
5. Use
two pipe
wrenches when making
connection to the
gas
valve to keep it
from turning.
6.
Install a
manual shut-off valve.
7.
Tighten
all
joints
securely.
7

8.
The furnace shall
be
connected to the building piping
by
one of
the
following:
a.
Rigid
metallic
pipe and
fittings.
b.
Semirigid metallic
tubing
and metallic fittings. Alumi-
num alloy tubing shall
not be used in exterior
locations.
c.
Listed gas
appliance connectors
used in
accordance
with
the terms of their listing that
are completely in the
same
room
as the
equipment.
d. In "b" and "c"
above,
the connector or
tubing shall be
installed so as
to be
protected against physical and
thermal
damage. Aluminum -alloy tubing and connec-
tors shall
be coated
to protect against external
corro-
sion
where they are
in contact with masonry,
plaster,
or insulation or
are
subject
to repeated
wettings by
such
liquids as
water (except
rain water),
detergents
or
sewage.
LOCATION
OF
MANUAL VALVE
ONLY WHERE REQUIRED
HEIGHT
AS
REQUIRED
BY
LOCAL CODE
GROUND
JOINT
PIPE
UNION
TO BE
INSTALLED AHEAD
OF
GAS VALVE
DRIP
LEG
REDUCING COUPLING
1
/
2
" x 1 /~" WITH
Ye" PIPE
PLUG
TO
MEASURE
LINE GAS
PRESSURE.
Fig.
6
CHECKING THE GAS
PIPING
A
CAUTION
To
avoid the possibility
of
property
damage,
personal
injury or
fire, the
fol-
lowing instructions must be
performed
regarding
gas connections,
pressure
testing, location of shutoff valve and
installation of
gas
piping.
A
A
A
A
The
unit and its gas connections must be leak tested
before placing in operation. Because
of
the
danger of
explosion or
fire,
never
use
a match
or
open
flame
to
test
for
leaks.
Never exceed specified
pressures
for
testing.
Higher
pressure may damage the
gas
valve
and
cause overfiring which may result in heat
exchanger
failure.
This
unit and its individual shut-off valve
must be dis-
connected
from
the
gas supply piping
system during
any pressure
testing of
that system at test pressures
in
excess
of psig (3.48
kPa).
This unit must be
isolated from
the
gas supply system
by closing its
individual
manual
shutoff
valve during
any pressure testing of the gas supply piping
system
at
test
pressures
equal to or less than
'h
psig
(3.48 kPa).
The
shut off
valve should be located in a
convenient
location (within
(6)
six
feet
of
unit) between
the meter
and
the unit. Proper sizing of
gas piping
depends
on
the cubic feet per
hour
of gas flow
required, specific
gravity of
the
gas and the length of the run.
Lay
out
the
piping plan and refer to
the
National
Fuel Gas
code
manual to
obtain
the correct
pipe
sizing for
each
branch
run, etc.
TANKS
AND
PIPING -
PROPANE UNITS
All propane gas
equipment must
conform
to the safety stand-
ards
of the National Board
of
Fire
Underwriters (See
NBFU
Manual
58).
For
satisfactory operation, propane gas pressure
must
be 10
inch W.C.
at
the
furnace manifold
with all
gas
appliances in
operation. Maintaining
proper gas
pressure
depends on
three
main factors:
1. Vaporization rate,
which depends on (a) temperature
of
the
liquid, and (b)
"wetted surface" area of the
container or
containers.
2.
Proper
pressure
regulation. (Two
-stage
regulation
is
rec-
ommended
from the standpoint of
both cost and
efficiency.)
3.
Pressure drop in lines
between regulators,
and
between
second stage
regulator
and
the appliance. Pipe
size
required will depend
on length of pipe run and
total
load
of
all
appliances.
Complete information
regarding tank sizing for vaporization,
recommended
regulator settings, and pipe sizing is available
from most
regulator manufacturers and
propane gas
suppliers.
Propane is an excellent
solvent,
and special pipe dope must
be
used when assembling piping
for
this gas as it
will quickly
dissolve white
lead
or most standard
commercial
com-
pounds.
Shellac base compounds resistant to the actions
of
liquified petroleum gases such as Gasolac, Stalactic, Clyde's
or
John
Crane are
satisfactory.
Please refer to
Fig. 7 for typical propane gas
installations.
Fig. 7—
Typical Propane Piping
S ' O 'S POUNDS
PRESSURE
..E RE
SEVER.1
POUNDS
v.R,%r,ON WON'
NURf
BU'
DON'
oo
OVER
]0
POUNDS
PROPANE
PIPING CHARTS
Sizing Between First and Second Stage Regulator
Maximum
Propane Capacities listed are based on 2
PSIG Pressure Drop
at 10
PSIG
Setting.
Capacities
in
1,000
BTU/HR
PIPE
OR
TUBING
LENGTH
FEET
TUBING SIZE.
O.D.. TYPE
L
9001601.
5000051.0
1/2'
PIPE SIZE.
40
3/4• 3/8' l/2" 5/8
3/4'
7/8'
10
730 1.700 3.200 5.300
8.300 1.200
7.500
2 500
1.100
2.200
3.700
5.800
2.200
4.200
30
400
920
2.000
7.900
4.700
1.800
4
000
40
370
850
1.700
7.700 4.100
1.600 3
100
50
330
770
1.500
2.400
3.700 1.500 3.400
60
300 700 1.300
2.200
3.300 1 300
3.100
80
260 610 1.200 1.900
2.900 1.200
2.600
100 220 540
1.000
1700 2.600 1.000
2.300
125
200 490 900
1.400 2.300
900
2.100
150 190 430 630
1.30O
2.100 830 1.900
75
170
400
780
1.250 1.900 770 1.700
200
160 360 730
1.100 1.800
720
1.500
To
Conver
to
Capacities
at 15
PSIG Settings —
Multiply
by 1.130
To Convert to
Capacities at 5 PSIG
Settings —
Multiply
by 0.879
8

Sizing
Between Single
or Second Stage
Regulator
and Appliance'
Maximum Propane
Capacities Listed
are
Based
on
1 /z" W.C. Pressure Drop
at
11"
W.C.
Setting. Capacities
in 1,000
BTU/HR
PIPE
O8
728146
1E80TH,
FEET
788180 SIZE, O.D. TYPE 1 40(41661 PIPE SIZE, SCHEOULE 40
3/8'
1/2° 5/8'
3/4
7/8' 1-1/6'
1/2'
3/4 -
1-1/4' I-1/2'
10
39
92 199 329
501
935 275 567 1.071 0205 3.307
20
26
6 5 2 0
131 216 346
530
189
393.
732 1.496 2 299
30
21
107 181
277
500 152 315 590 1,212 ,858
40
19 41
90 145 23; 427
129
267 504 1.039 1.559
50 10 37 79
131 198 316
114
231 448 913
1.417
60 16
35
72
121
187
340
103
217 409 834 1.275
88
13 29
62 104 155
289
89 185 346 724
1.086
too
11
26
55 90
138
255
78
162
307
630 976
125 to 24 48
81
122
224
69
146 275 567 866
150 9
21
43
72 109 282 63
132
252 511
787
200 8
19 39
66
100
187
94
112
209 439
665
250
8
13 36
93
172
48
100 _ 185 390 590
DATA IN
ACCORDANCE
WITH NFPA
PAMPHLET
NO.
54
PROPANE
MODELS
ONLY
A
WARNING
If your
propane
gas furnace is
installed
in
a
basement, an
excavated
area or a con-
fined space,
we recommend that you
contact
your
propane
supplier about
installing a
warning
device that would
alert you to a
gas leak.
We
recommend
this because
propane gas is
heavier
than
air and
any leaking
gas
can
settle
in any
low areas
or
confined spaces. This pro-
pane
gas would create a
DANGER OF
EXPLOSION
OR
FIRE. If you suspect the
presence
of gas, follow
the instructions
on the
cover
of the
user's
manual.
ELECTRICAL
WIRING
A CAUTION
To avoid electrical shock, injury
or
death,
disconnect electrical
power
before
changing
any electrical
wiring.
The
wiring
harness on this
unit
is
furnished as an integral part
of
the
furnace. Field alteration to
comply
with electrical codes
should not be required.
Power supply to the furnace must be
N.E.C. Class
1,
and
must comply with all applicable codes. The
furnace
must be
electrically grounded in accordance with local codes or in
their absence, with the latest edition of the National Electrical
Code,
ANSI/NFPA
No. 70.
A
fused disconnect should be pro-
vided
and sized in accordance with the unit
minimum circuit
ampacity.
A CAUTION
Wiring to the unit must be properly
polar-
ized and grounded.
TYPICAL FIELD WIRING
(24V
CONTROL CIRCUIT)
HEATING
ROOM STAT
FURNACE
HEATING
AND
COOLING
ROOM
STAT
REMOTE
CONDENSING
UNIT
FURNACE
A 40VA transformer
and auxiliary
fan relay are built into the
fur-
nace so that it may
be used with most cooling equipment.
The furnace is designed
for
heating applications and
has
an
auxiliary fan relay built
in for use with cooling
equipment.
See the wiring diagram
for both 115v. and
24v. wiring details
and the
Heat Anticipator Setting. This is located
inside of the
blower
compartment
door
and
on
Page
14
of
this
manual.
LOW
VOLTAGE
TERMINAL BOARD
HIGH
VOLTAGE (115v)
CONNECTIONS
Fig.
8 — Field Wiring
Connections.
HEAT ANTICIPATOR
SETTING
The heat anticipator in
the
room
thermostat must
be
correctly
adjusted
to obtain the proper number of
heating cycles per
hour
and to
prevent the room temperature from
"overshoot-
ing"
the room thermostat setting. Heat
anticipator
must be
set at 0.8 amps.
GENERAL INFORMATION
This furnace is
equipped
with
a
self
diagnostic electronic
igni-
tion control which
lights the burners. It also has an induced
draft
blower
to draw combustion air
into the
heat
exchanger.
Keep the
blower
access door and
upper
access panel in
place
except for inspection
and maintenance. An interlock switch
pre-
vents furnace operation if
the
blower door
is not in place.
On new
installations or if a
functional
part such as the
gas
valve, pressure switch or fan/limit control
has been replaced,
the
operation of
the furnace should be checked.
Check
furnace operation as outlined in the following
instruc-
tions. If any sparking, odors,
or
unusual
noises are encoun-
tered, shut off electrical power and
recheck for
wiring errors, or
obstructions
in or near
the
blower
motors.
SELF
DIAGNOSTIC
IGNITION
CONTROL
In this furnace, there may be a
red
indicator
light
located
on
the
ignition control
board
near
the MV terminal. This
light is
designed to help the servicer
diagnose potential
service prob-
lems
with either
the furnace or the ignition control itself. If
the
furnace is malfunctioning,
and the red
light
is on continuously,
the
ignition
control is faulty. If
the red
light is flashing,
the fur-
nace is
probably
in a lock -out condition. If the indicator
light
is
not
on or flashing
and the
furnace
does not
operate properly
then
the
problem likely
exists elsewhere in the furnace
and not
in the ignition
control
board.
9

PRESSURE
-
MANIFOLD
PRESSURE
ADJUSTMENT
R
L
OPERATING INSTRUCTIONS
1.
Close the
manual gas
valve
external
to the furnace.
2.
Turn off the
electrical
power
supply
to the furnace.
3. Set room thermostat to lowest possible setting.
4.
Remove the
door on
the front of the furnace.
5. This furnace is
equipped
with an ignition
device
which
auto-
matically
lights the
burner.
Do not try to light burner
by hand.
6.
Turn
the gas control valve
knob
clockwise/
to
"OFF"
position.
Do not force. See
Fig.
9.
7. Wait five (5) minutes
to
clear out
any gas.
8. Turn
gas
control
valve knob counter
clockwise !
\to
"ON."
See Fig. 9.
9. Replace the
door on
the front of
the furnace.
10. Open
the
manual
gas valve external to
the furnace.
11.
Turn on the electrical
power supply to the
furnace.
12.
Set the thermostat(s) to
desired
setting.
NOTE: There
is a one minute delay between
thermostat
energizing
and
burner
firing.
RESET AFTER LOCK
-OUT
Should
ignition not be achieved
after three tries for any rea-
son it
will
be
necessary
to
reset the electronic
ignition mod-
ule. To
reset it is only
necessary
to
turn the thermostat
below
room temperature for thirty
seconds and then return the
set-
ting to the desired
temperature. The
furnace may also be
reset after lockout by
disengaging the electric disconnect
switch to the furnace
for
thirty
seconds.
TO TURN OFF FURNACE
1.
Set the thermostat(s) to lowest setting.
2. Turn off
the
electrical power supply to the
furnace.
3. Remove the
door on
the front
of
the furnace.
4.
Turn
the gas
control
clockwise(~to "OFF" position. Do
not force. See
Fig.
9.
5.
Close manual gas shut off
valve
external
to the furnace.
6. Replace the
door
on the furnace.
INLET
GAS
,GAS
CONTROL
f.
-KNOB
--~
OFF
m
FLAME ROLL
-OUT
PROTECTION
(shown with
gas
valve removal)
Fig.
9 — Gas
Pressures.
CHECK
GAS
INPUT
AND
PRESSURES
Gas
supply pressure
and
manifold pressure with the
burners
operating must be as
specified
on
the
rating
plate.
ROLL -OUT PROTECTION CONTROL
If the flames from the burners are not
properly
drawn into
the
heat exchanger, a protection
device will open causing
the fur-
nace to shut off. The
protection
device
is
located
on
the
mani-
fold
assembly.
(See
Fig. 11)
A
CAUTION
The cause must
be
investigated by
an
Amana authorized
servicer
before any
attempt is made to engage
the
manual
reset device and turn
the unit
back on.
CHECK THE MANIFOLD PRESSURE
A
tapped
opening is
provided in the gas valve to
facilitate
measurement
of
the manifold
pressure.
A
"U Tube" manom-
eter having a scale
range
from
0 to
12
inches of water
should
be used for this
measurement. The
manifold
pressure must
be measured with the burners operating.
To adjust the
pressure
regulator,
remove the adjustment
screw or cover on
the gas valve. Turn
out (counterclockwise)
to
decrease pressure, turn in
(clockwise) to increase pres-
sure. Only small
variations
in gas flow
should
be made by
means
of
the pressure regulator
adjustment. In no case
should the
final
manifold
pressure
vary
more than
plus
or
minus 0.3
inches
water
column from
the specified pressure.
Any major
changes in flow should
be made by changing the
size of the burner
orifices.
(Fig.
9)
CHECK THE GAS INPUT
To measure the gas input
using
the gas
meter
proceed as
follows:
1. Turn off
gas
supply
to
all other appliances except
the
furnace.
2. With
the
furnace
operating,
time the smallest
dial on
the
meter for
one
complete revolution. If this is a 2 cubic foot
dial, divide
the
seconds by
2;
if it is a
1
cubic foot
dial,
use
the seconds as is.
This
gives the seconds
per cubit foot of
gas being delivered to the furnace.
3. INPUT = GAS HTG VALUE
x
3600
_
SEC.
PER
CUBIC
FOOT
Example:
Natural gas with a heating
value
of 1000 Btu per
cubic foot and
34
seconds
per
cubic foot as determined by
Step
2, then:
Input = 1000
x
3600
_
34
= 106,000 Btu per Hour
Note: BTU
content of
the gas should be obtained
from
the
gas supplier.
This measured input must not be
greater
than the input indi-
cated
on
the rating plate of the furnace.
4. Relight all other
appliances turned
off in
step
1
above.
Be
sure
all
pilot burners are operating.
LIMIT AND
FAN CONTROL
Fig.
10 — Fan
and Limit Control.
10

CHECK
LIMIT AND
FAN CONTROL
Check limit
control
operation after 15 minutes
of operation by
blocking the
return
air
grille(s).
(Fig. 10)
1. After
several minutes the
main burners must go
OFF.
Blower
will continue to run.
2. Remove
air restrictions
and
main burners
will relight
after
a
cooldown period of a few minutes.
Adjust the
thermostat setting below room
temperature.
1. Main burners
must go off.
2.
Circulating Air
Blower
should
continue to
run briefly until
sup-
ply air
temperature drops to
approximately 100-90 deg. F.
Fan and
limit controls are
preset at the
factory.
The
control
is
set for the fan to go
off at 100-90 deg.
F.
NOTE:
If necessary,
adjust fan ON/OFF settings to
obtain
satisfactory comfort
level. The fan
comes on at approx-
imately 125 deg. F.
A
CAUTION
Do
not
adjust
the fan
OFF setting
so
low
as to give
continuous fan
operation. The
burners
cannot
relight until after the sup-
ply
air
temperature is
low enough
to
shut
OFF
the
fan control. Because
of
this,
low
OFF settings of the
fan control could
cause the
building
to become
uncomfort-
ably cool before
the
burners could
relight.
A
WARNING
To
avoid
premature
failure
of
heat
exchanger or possible property damage,
injury or fire,
do
not adjust the limit
con-
trol,
which
is
factory preset.
CHECK TEMPERATURE RISE
Check the temperature rise
through the
unit by
placing ther-
mometers
in supply
and return
air
registers as close to the
furnace as possible.
1. All registers must be open;
all
duct dampers must be
in
their final (fully or partially open) position,
and the
unit
operated
for 15 minutes before taking readings.
2.
The
temperature rise must be
within
the range specified
on the
rating
plate.
NOTE:
Air
temperature
rise is the temperature
difference
between supply and
return
air.
With a properly designed
system,
the
proper amount
of
tem-
perature
rise
will
normally be obtained when
the
unit is
oper-
ated at
rated
input with the
recommended blower speed.
If
the correct amount
of temperature rise is not obtained,
it
may be necessary to
change the
blower
speed.
A higher
blower
speed
will lower the temperature rise.
A slower blower
speed
will
increase the
temperature rise.
NOTE:
Blower
speed must be
set to give the correct air tem-
perature rise through the
furnace as marked
on
the rating
plate.
CHECK MAIN BURNER FL ME
Flames
should be stable, soft and blue,
(dust
may cause
orange tips
but
they
must not
be
yellow). They should extend
directly outward
from the burner without curling,
floating or
lifting off.
(Fig. 11)
BLUE FLAMES
W/O
CURLING OR LIFTING
OFF BURNER AREA j
Fig. 11 —
Burner
Flame.
CHANGING
BL:I WER SPEEDS
A WARNING
To avoid
electrical shock, injury
or
death,
when changing speed taps turn off
power
to the
furnace.
A multi
-speed
motor is used in the furnace
blower. It provides
easy speed
selection for both heating and
cooling air flow.
Page 3 shows the CFM and
E.S.P.
relationship for proper
selection of heating and
cooling speeds.
Refer to the WIRING
DIAGRAM on the furnace
to connect
the proper wires to the correct
motor leads. All unused
motor
leads must have wirenuts.
ACAUTION
Some installations
will
use a different
blower
speed
for
cooling than
is used
for
heating. If
this is the
case, do not set the
thermostat
fan switch
to
ON
(constant
fan operation)
without first confirming
that
the
cooling fan
speed
will
give a
tem-
perature rise within
the limits listed
on
the unit
nameplate. Temperature rises
outside
of
the limits
listed could
result in
premature failure
of
the heat exchanger
or venting
system.
MAINTENANCE
A DANGER
To avoid
electrical shock, injury or death,
disconnect
electrical power
before
per-
forming any maintenance.
Have the furnace checked
at
least once
every
year, before
the
heating season begins, to be sure that
there
is adequate
combustion air
and that the
vent system
is working
properly.
Have chimney flue and
vent pipe
checked to be sure
they
are
not blocked by debris,
which
would permit
fumes to
enter
the
house. Replace
any
rusted
out vent
pipe.
AIR
FILTER
AWARNING
Never
operate
furnace without a
filter
installed
as dust and lint will
build up on
internal
parts resulting in
loss of
efficiency,
equipment damage and
possible fire.
11

This furnace is equipped with a permanent type
washable
high -velocity
filter(s).
After filter is washed
and
dry
it should
be sprayed with
adhesive
for best
efficiency. (Type
may
be
shown on
the
filter
frame).
Filter(s)
should be inspected and
cleaned
every
two months as required.
If
the replacement of
the
filter(s)
becomes
necessary,
it must be replaced with
a
filter
of
the
same type and size.
Remember
that
dirty
filters are the most common cause
of inadequate heating or cooling
performance.
FILTER
REMOVAL
TOWARDS
BLOWE
®3
PULL
FILTER OUT
Fig. 12 —
Filter
Removal.
To remove the
filter turn
the
latches on lower door.
Remove the
door.
The
blower motor will automatically stop through the inter-
lock switch.
The
filter may
be removed by
taking
a
hold of
the
lower portion
of the
filter,
lift up to
disengage it from the lower railing, move
towards
blower,
drop
filter down.
Pull
filter
outward.
(Fig.
12)
If
side
return(s)
is
(are)
used,
the
filter(s) must be of the
perma-
nent
washable
type
with
dimensions
of
16
x
25
x
1.
Use a
vacuum cleaner
to
clean out the blower area and the
adjacent area
of
the return air duct.
Clean,
wash
and
dry
the permanent
filter. Both sides should
then
be sprayed
with a
dust adhesive
as
recommended
on
adhesive
container. Re -install filter by placing it into the furnace
along
the side
of
the
blower.
Engage
fi lter in the
top
rail,
move
towards
side of furnace
and
drop
it
into the bottom rail. BE
SURE AIRFLOW DIRECTION ARROW POINTS
TOWARDS
BLOWER.
When
the
filter is located in the bottom of the furnace on
a
bot-
tom return system the
fi lter
is held in its location by a sheet metal
retainer strap. To change
or
clean the filter merely slide
one end
of the retainer towards the front and remove the fi lter.
BLOWER MOTOR, COMPARTMENT, WHEEL
Once each
year oil your blower motor
by adding 4 to 6
drops
of
SAE#20
or
#30
motor oil
to
each motor bearing oil
tube.
DO
NOT OVER OIL.
(Note: Some blower
motors may be
permanently
lubricated and
do not require oiling. This
type
of motor does not
have
oil
ports.)
At least once a month during the heating and
cooling
seasons,
remove
the blower compartment door
and
clean the
compart-
ment of any dirt and lint that may have
accumulated there.
Periodically
check the
blower wheel in your
furnace and
clean if
necessary using a bristle brush.
VENT BLOWER MOTOR
The vent blower motor may
be
oiled annually with 6 drops of
Anderoil
465
oil. (3 drops in each oil port -Fig. 13).
OIL PORTS
Fig.
13 — Vent
Blower
Motor.
FLUE PASSAGES
At the start
of each heating
season,
inspect and
if
necessary,
clean the furnace fl ue passages.
CLEANING FLUE PASSAGES
(QUALIFIED SERVICEMAN
ONLY)
1. Shut off
electric
power and gas supply to
the
furnace.
2.
Remove
burner assembly
by
disconnecting
the gas line and
removing the manifold brackets from the
partition panel.
3. Remove the fl ue from the induced draft
blower
and the collec-
tor box from
the
partition panel.
4. The
primary heat exchanger tubes can be cleaned
using a
round wire
brush attached to a length of
high
grade
stainless
steel
cable,
such as
drain cleanout cable. Attach a variable
speed
reversible drill to the
other
end of
the spring cable.
Slowly rotate the
cable with
the
drill
and
insert it into one
of
the
primary heat
exchanger tubes.
While
reversing the
drill,
work
the
cable
in
and out
several times to
obtain
sufficient
cleaning. Repeat
for
each tube.
5.
When all heat
exchanger
tubes
have been cleaned, replace
the
parts
in
the
reverse order in which they were removed.
BURNERS
A WARNING
Electrical components are
contained
in the
upper compartment. To
avoid
electrical
shock, injury or death,
do not remove
any
internal compartment
covers
or attempt
any
adjustment.
Contact a
qualified
serv-
ice agent at
once
if an abnormal
flame
appearance should
develop.
Periodically
during
the heating season
make a visual check of
the
burner
fl ames. Turn
the
furnace
on
at the thermostat. Wait
a
few minutes, since any
dislodged
dust will alter
the normal
flame
appearance.
Flames should
be stable, quiet, soft
and blue with
slightly
orange tips.
They should
not
be yellow.
They
should
extend
directly
outward from
the
burner
ports
without curling
downward, fl oating
or lifting off
the ports.
(See
Fig. 11)
12

FUNCTIONAL
PARTS
LIST
GENERAL
INFORMATION
1. When
ordering any of
the listed
functional parts, be sure
to
provide the furnace model,
manufacturing, and serial
numbers
with
the
order.
2. Although
only functional parts are shown in the parts
list,
all
sheet
metal
parts,
doors, etc. may be ordered by
description.
3.
Parts
are
available from your Amana
distributor.
Gas Valve
Heat
Exchanger
Gas Orifice,
Natural
Door
Switch
Gas Orifice, LP
Transformer
Burner
Blower Relay
Ignitor
Combustion Relay
Flame
Sensor
Terminal
Board
Ignitor Clip
Blower Wheel
Gas Manifold
Blower Housing
Ignition Switch
Blower Cutoff
Fan/Limit
Switch Blower Motor
Pressure
Switch Motor
Mount
Bracket
Pressure
Switch Hose Capacitor
Induced
Draft
Blower Filter,
16
x
25
x
1,
Collector Box Permanent
Blower/Box Gasket
Flame
Roll
-out
Switch
13

IGNITICN
CONTROL
(TERMINAL ORDER
REARRANGED)
L
F
T
M
P H
V
G
M T
N
V M S
I
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N
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FLAME
SENSOR
FL
5(14551
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TRANSFORMER
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LINE
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GND
LI
®
WARNING: WIRING TO
UNIT
MUST
BE
PROPERLY
POLARIZED
AND
GROUNDED.
DISCONNECT
POWER
BEFORE SERVICING.
®
WARNING: WIRING
TO UNIT
MUST
BE
PROPERLY POLARIZED
AND GROUNDED.
DISCONNECT
POWER
BEFORE
SERVICING.
I
I5V
FIELD
CONNECT
N
GND
WH-30
•
t.0 ~~
1
BK-3
BK
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DOOR
SWITCH
(CLOSED
WHEN
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1
CAPACITOR
BR
BR
RD
(LOW)1
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PRESSURE
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VOLTAGE
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COMBUSTION
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PRIMARY
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LIMIT
(RL)
BR -27
FLAME
SENSOR
BL
-2••
FACTORY
WIRED MOTOR
CONNECTIONS
•• COOLING
BLOWER
SPEED
BLUE -2 TO
MOTOR
LEAD
• HEATING BLOWER
SPEED
FURNACE MODEL
SPEED
MOTOR
TO
FAN
CONTROL
MOTOR
SPEEDS
SEE
INSTALLATION
INSTRUC-
TIONS TO DETERMINE PROPER
COOLING
BLOWER
;PEED.
WH-23
IGNITOR
DY
12
BK-7
I
RD
-22
OR
-19
DY
13
COY
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BR
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LSJZU.rc-Z
w
LD
IGNITION
CONTROL
10127001
REV. I
GUI: 045B25B,
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LOW
RD
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TO RED -08 3
GUI:
0708408,090B50B
LOW RD
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4
GUI: 0708308
GUC:
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GUI: 0908308,
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GUC: 090835B . 090B508
GUI: 1408508
MED LOW
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MEd BL -23 TO RED -08
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MED BL -23 TO RED - i'18
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058508
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IMPORTANT:
READ
BEFORE OPERATING
OR
SERVICING
THIS
UNIT.
SET HEAT ANTICIPATOR UN ROOM THERMOSTAT
AT
0.8 AMPS.
2.
AMANA
APPROVED REPLACEMENT
PARTS
MUST
BE
USED
WHEN
SERVICING.
3.
IF ANY
OF
THE
ORIGINAL
WIRE AS
SUPPLIED
WITH
THE
FURNACE
MUST
BE REPLACED.
IT MUST
BE
REPLACED
WITH
WIRING
MATERIAL
HAVING
A
TEMPERATURE
RATING
OF
AT
LEAST 0O5°C.
USE
COPPER
CONDUCTORS
ONLY.
4.
WIRE
NUT
AND TAPE UNUSED
MOTOR
LEADS.
COLOR
CODE
YL YELLOW
BR BROWN
OR
ORANGE
WH
WHITE
VT
VIOLET
BL BLUE
GM GREEN GY GRAY
BK BLACK RD
RED
LOW VOLTAGE
- -- LOW VOLTAGE FIELD
HI VOLTAGE
• - - •
HI VOLTAGE FIELD
A
WARNING
Disconnect
electrical power
before
servicing.
A.
s
I