Carrier 59SU5A Manual page 19

59SU5A: Installation, Start-up, Operating and Service Maintenance Instructions
CAUTION
!
MINOR PROPERTY HAZARD
Failure to follow this caution may result in minor property damage.
Local codes may require a drain pan under entire furnace and
condensate trap when a condensing furnace is used in an attic
application or over a finished ceiling.
The furnace can be installed horizontally in an attic or crawlspace on
either the left-hand (LH) or right-hand (RH) side. The furnace can be
hung from floor joists, rafters or trusses or installed on a
non-combustible platform, blocks, bricks or pad.
LEVEL 0-IN. (0 MM) TO
1/2-IN. (13 MM) MAX
UPFLOW OR
DOWNFLOW
Fig. 31 – Furnace Pitch Requirements
Platform Furnace Support
Construct working platform at location where all required furnace
clearances are met. (Table 1 and
mm) clearance requirement on side, set furnace on non-combustible
blocks, bricks or angle iron. For crawlspace installations, if the furnace
is not suspended from the floor joists, the ground underneath furnace
must be level and the furnace set on blocks or bricks. Condensate Trap
section for required and recommended clearances for trap installation
(see Fig. 6, Fig. 21, and Fig. 32).
Suspended Furnace Support
The furnace must be supported under the entire length of the furnace
with threaded rod and angle iron (see
bottom of furnace as shown.
Roll-Out Protection
Provide a minimum 12-in. x 22-in. (305 x 559 mm) piece of sheet metal
for flame roll-out protection in front of burner area for furnaces closer
than 12-in. (305 mm) above the combustible deck or suspended furnaces
closer than 12-in. (305 mm) to joists. The sheet metal MUST extend
underneath the furnace casing by 1-in. (25 mm) with the door removed.
The bottom closure panel on furnaces of widths 17-1/2-in. (445 mm) and
larger may be used for flame roll-out protection when bottom of furnace
is used for return air connection.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
MIN 1/4-IN. (6 MM) TO
1/2-IN. (13 MM) MAX
HORIZONTAL
Fig. 32) For furnaces with 1-in. (25
Fig. 33). Secure angle iron to
ADDITIONAL 1" CLEARANCE BELOW TRAP RECOMMENDED
Fig. 32 – Working Platform for Attic Installation
NOTE: Furnace shown is a direct vent application. Refer to the venting
section for allowable vent configurations.
NOTE: N Coil only, add 8-in. separation between coil and furnace for
all other unshielded coils. (See evaporator coil spacer or shield
requirements.)
A11237
NOTE: Local codes may require a drain pan and condensate trap when a
condensing furnace is installed over a finished ceiling.
NOTE: FURNACE SHOWN IS A DIRECT VENT APPLICATION. REFER TO THE
VENTING SECTION FOR ALLOWABLE VENT CONFIGURATIONS.
NOTE: (N COIL ONLY, ADD 8" SEPARATION BETWEEN COIL & FURNACE FOR
ALL OTHER UNSHIELDED COILS) SEE EVAPORATOR COIL SPACER OR
SHIELD REQUIREMENTS.
Fig. 33 – Suspended Furnace Installation
NOTE: Furnace shown is a direct vent application. Refer to the venting
section for allowable vent configurations.
NOTE: N Coil only, add 8-in. separation between coil and furnace for
all other unshielded coils. (See evaporator coil spacer or shield
requirements.)
NOTE: Local codes may require a drain pan and condensate trap when a
condensing furnace is installed over a finished ceiling.
Supply Air Connections
For a furnace not equipped with a cooling coil, the outlet duct shall be
provided with a removable access panel. This opening shall be
accessible when the furnace is installed and shall be of such a size that
19
6-3/8" CLEARANCE
NEEDED FOR TRAP
FOR SERVICE
6-3/8" CLEARANCE
NEEDED FOR TRAP
ADDITIONAL 1"
CLEARANCE BELOW TRAP
RECOMMENDED
FOR SERVICE
A200088
A200085