2. Firmly touch the clean, unpainted, metal surface of the
furnace chassis which is close to the control. Tools held in
hand during grounding will be discharged.
3. After touching the chassis, you may proceed to service the
control or connecting wires as long as you do nothing to
recharge your body (moving or shuffling feet, touching
ungrounded objects, etc.).
4. If you touch ungrounded objects, firmly touch a clean,
unpainted metal surface of the furnace again before touch-
ing control or wires.
5. Use this procedure for installed and uninstalled (un-
grounded) furnaces.
6. Before removing a new control from its container, dis-
charge your body’s electrostatic charge to ground to protect
the control from damage. If the control is to be installed in
a furnace, follow items 1 through 4 before bringing the
control or yourself in contact with the furnace. Put all used
and new controls into containers before touching un-
grounded objects.
7. An ESD service kit (available from commercial sources)
may also be used to prevent ESD damage.
APPLICATIONS
CAUTION:
MINOR PROPERTY DAMAGE
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.
NOTE:
In Canada, installations shall be in accordance with
current NSCNGPIC and/or local codes.
I.
GENERAL
Some assembly and modifications are required for furnaces
installed in any of the 4 applications shown in Fig. 1. All drain and
pressure tubes are connected as shown in Fig. 6. See appropriate
application instructions for these procedures.
II.
UPFLOW APPLICATIONS
In an upflow application, the blower is located below the burner
section, and conditioned air is discharged upwards.
A.
Condensate Trap Location (Factory-Shipped
Orientation)
The condensate trap is factory installed in the blower shelf and
factory connected for UPFLOW applications. A factory-supplied
Fig. 5—Condensate Trap
A93026
1
⁄
2
OD
INDUCER HOUSING
DRAIN CONNECTION
1
⁄
4
OD
COLLECTOR BOX TO
TRAP RELIEF PORT
5
⁄
8
OD
COLLECTOR BOX
DRAIN CONNECTION
1
⁄
2
-IN. PVC OR CPVC
SCREW HOLE FOR
UPFLOW OR DOWN-
FLOW APPLICATIONS
(OPTIONAL)
1 4
2
7 8
1 8
7
SLOT FOR SCREW
HORIZONTAL
APPLICATION
(OPTIONAL)
WIRE TIE
GUIDES
(WHEN USED)
1 2
1
3 4
1
3 4
FRONT VIEW
SIDE VIEW
FURNACE
DOOR
FURNACE
DOOR
CONDENSATE
TRAP
78
1 4
26
4
FURNACE
SIDE
FURNACE
SIDE
1 2
1
1 4
26
4
3 4
5
3 4
5
4
SIDE VIEW
FRONT VIEW
END VIEW
FRONT VIEW
3 4
DOWNFLOW AND ALTERNATE
EXTERNAL UPFLOW APPLICATIONS
HORIZONTAL
APPLICATIONS
FIELD
DRAIN
CONN
FIELD
DRAIN
CONN
CONDENSATE
TRAP (INSIDE)
BLOWER SHELF
ALTERNATE DRAIN
TUBE LOCATION
UPFLOW APPLICATIONS
CONDENSATE TRAP
DRAIN TUBE LOCATION
—6—
Summary of Contents for CONDENSING GAS FURNACE 352MAV
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