Ategoryi Furnaces Only ); L Ocation - Goodman *MH8 Installation Instructions Manual

E E E E E
X X X X X TERIOR TERIOR M A S TERIOR TERIOR TERIOR M A S M A S M A S M A SO N R O N R O N R O N R O N RY Y Y Y Y
The minimum vent diameter for the Category I venting system is as
shown:
MODEL
UPFLOW
45 4 Inch
70 4 Inch
90 4 Inch
115 5 Inch
140 5 Inch
Under some conditions, larger vents than those shown above may
be required or allowed. When an existing furnace is removed from a
venting system serving other appliances, the venting system may be
too large to properly vent the remaining attached appliances.
Upflow or Horizontal units Upflow or Horizontal units Upflow or Horizontal units Upflow or Horizontal units Upflow or Horizontal units are shipped with the induced draft
blower discharging from the top of the furnace. ("Top" is as viewed
for an upflow installation.) The induced draft blower can be rotated
90 degrees for Category I venting. For horizontal installations, a
four inch single wall pipe can be used to extend the induced draft
blower outlet 1/2" beyond the furnace cabinet. THIS PR
NO NO NOT DESIGNED FOR C NO NO T DESIGNED FOR C T DESIGNED FOR C T DESIGNED FOR COUNTER T DESIGNED FOR C OUNTER OUNTER OUNTERCL OUNTER
BL BL BL BLOWER R BL OWER RO O O O O T T T T T A A A A A TION. OWER R OWER R OWER R TION. TION. TION. TION.
Vent the furnace in accordance with the National Fuel Gas Code
NFPA 54/ANSI Z223.1 - latest edition. In Canada, vent the furnace
in accordance with the National Standard of Canada, CAN/CSA
B149.1 and CAN/CSA B149.2 - latest editions and amendments.
Venting Venting
Venting Venting Venting
THIS FURNACE IS NOT DESIGN CERTIFIED TO BE HORIZONTALLY
VENTED.
To rotate the induced draft blower clockwise, you will need to pur-
chase one (0270F01119) chimney transition bottom kit.
1. Disconnect electrical power from the furnace.
2. Disconnect the induced draft blower power leads, flue pipe,
and pressure switch tubing.
3. Remove the round cutout from the right side of the wrapper.
4. Remove and save the four screws that fasten the induced
draft blower to the flue collector box.
5. Remove and save the three screws that hold the chimney
assembly to the induced draft blower.
6. Remove and save the four screws that fasten the chimney
top to the chimney bottom.
7. Remove the chimney transition bottom from the transition
bottom kit.
8. Install the chimney top with the four screws retained from
step 6 onto the new chimney transition bottom from the
transition bottom kit.
9. Install chimney assembly with the three screws retained
from step 5 onto the induced draft blower.
10. Reinstall the induced draft blower rotating it 90 degrees
clockwise from the original upflow configuration using the
four screws retained in step 3. Ensure the gasket located
between the induced draft blower and the collector box is
rotated accordingly.
C C C C C - C - C - C - C - C
H I M N E H I M N E H I M N EY Y Y Y Y S S S S S H I M N E H I M N E A A A A A T E G O R T E G O R T E G O R T E G O RY Y Y Y Y T E G O R
MINIMUM VENT
COUNTERFLOW
4 Inch
4 Inch
4 Inch
5 Inch
N/A
THIS PR THIS PR THIS PR THIS PRODUC ODUC ODUCT IS ODUC ODUC
CL CL CL CLOCK OCK OCK OCKWISE INDUCED DR OCK WISE INDUCED DR WISE INDUCED DR WISE INDUCED DR WISE INDUCED DRAFT
I F I F I F I F I F
U R N A U R N A U R N A U R N A U R N AC E S C E S C E S C E S C E S
11. Reconnect the induced draft blower power leads. NOTE: If
the wires are not long enough, pull extra wire from the wire
bundle in the blower compartment.
12. Reconnect the flue pipe, and the pressure switch tubing.
Ensure that all wires and the pressure switch tubing is at
least one inch from the flue pipe, or any other hot surface.
13. Restore power to furnace.
Counterflow units Counterflow units
Counterflow units are shipped with the induced draft blower dis- Counterflow units Counterflow units
charging from the top of the furnace. ("Top" as viewed for a coun-
terflow installation.)
Vent the furnace in accordance with the National Fuel Gas Code
NFPA54/ANSI Z223.1-latest edition. In Canada, vent the furnace in
accordance with the national standard of Canada, CAN/CSA B149.1
and CAN/CSA B149.2- latest editions and amendments.
N
EVER ALLOW THE PRODUCTS
,
MONOXIDE TO ENTER
T IS T IS T IS T IS
.
SUPPLY
AFT AFT AFT AFT
E E E E E M M M M M
X X X X X TERIOR TERIOR TERIOR TERIOR ASONR ASONR ASONRY Y Y Y Y
TERIOR ASONR ASONR
An exterior masonry chimney is defined as a "Masonry" chimney
exposed to the outdoors on one or more sides below the roof line. "
The ability to use a clay lined masonry chimney depends on a pa-
rameter not associated with interior chimneys. This variable is the
geographic location of the installation. Researchers have discov-
ered that the winter design temperatures have a direct impact on
the suitability of this type of venting. In most situations, the existing
masonry chimneys will require a properly sized metallic liner.
P
OSSIBILITY OF PROPERTY
DAMAGING CONDENSATION
‐
WHEN A SINGLE FAN ASSISTED
)
FURNACE IS VENTED WITHOUT
80%
CONNECT AN FURNACE
FURNACE IS COMMON
APPLIANCE OR THE CHIMNEY
. A
METAL VENT LL INSTALLATIONS
SIZED IN ACCORDANCE
80%
FURNACE IS COMMON
,
APPLIANCE THE POTENTIAL
EXIST WITH EXTREMELY
,
EXTERIOR CHIMNEYS
T
HE RISK OF CONDENSATION
MASONRY CHIMNEY AS
T B
OR YPE METAL VENT
10
O O O O O
N L N L N L N L N LY Y Y Y Y
WARNING
,
OF COMBUSTION INCLUDING
THE RETURN DUCTWORK OR CIRCULATION
C C C C C ( ( ( ( (C C C C C I F I F I F I F I F
HIMNEY Y Y Y Y S S S S S HIMNE HIMNE A A A A A TEGOR TEGOR TEGORY Y Y Y Y TEGOR
HIMNE HIMNE TEGOR
WARNING
,
DAMAGE PERSONAL INJURY
CAN OCCUR INSIDE MASONRY
C I
ATEGORY APPLIANCE
ADEQUATE DILUTION AIR
TO A MASONRY CHIMNEY
VENTED WITH A DRAFT HOOD EQUIPPED
IS LINED WITH A METAL
USING MASONRY CHIMNEYS
WITH THE APPROPRIATE VENTING
VENTED WITH A DRAFT HOOD
FOR CONDENSATION DAMAGE
,
COLD CONDITIONS LONG VENT
OR ANY COMBINATION OF THESE
DAMAGE IS BEST AVOIDED
A PATHWAY FOR PROPERLY SIZED
.
CARBON
AIR
O O O O O ) ) ) ) )
URNACES URNA URNA CES CES CES NL NL NLY Y Y Y Y
URNA URNA CES NL NL
OR DEATH
CHIMNEYS
(80% AFUE
. D
O NOT
UNLESS THE
T B
LINER OR YPE
MUST BE
. I
TABLES F AN
EQUIPPED
MAY STILL
,
CONNECTORS
.
CONDITIONS
BY USING
METAL LINER