-- 8 --
3. Disconnect all power to the furnace. Multiple disconnects
may be required. DO NOT TOUCH THE CONTROL OR
ANY
WIRE CONNECTED TO THE CONTROL PRIOR
TO DISCHARGING YOUR BODY’S ELECTROSTATIC
CHARGE TO GROUND.
4. Firmly touch the clean, unpainted, metal surface of the
furnace chassis which is close to the control. Tools held in
a
person’s
hand
during
grounding
will
be
satisfactorily discharged.
5. After touching the chassis, you may proceed to service the
control or connecting wires as long as you do nothing to
recharge your body with static electricity (for example;
DO NOT move or shuffle your feet, do not touch
ungrounded objects, etc.).
6. If you touch ungrounded objects (and recharge your body
with static electricity), firmly touch a clean, unpainted
metal surface of the furnace again before touching control
or wires.
7. Use this procedure for installed and uninstalled
(ungrounded) furnaces.
8. Before removing a new control from its container,
discharge 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 ungrounded objects.
9. An ESD service kit (available from commercial sources)
may also be used to prevent ESD damage.
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.
CAUTION
!
INTRODUCTION
The model 58MEB 4-way multipoise, Gas-Fired, Category IV,
condensing furnace is available in model sizes ranging from input
capacities of 40,000 to 120,000 Btuh as direct vent (2-pipe)
application, and in model sizes ranging from input capacity of
40,000 to 120,000 Btuh as non-direct vent (1-pipe) application.
APPLICATIONS
Step 1—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.
Step 2—Upflow Applications
An upflow furnace application is where furnace blower is located
below combustion and controls section of furnace, and
conditioned air is discharged upwards.
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
tube is used to extend the condensate trap drain connection to the
desired furnace side for field drain attachment. See Condensate
Trap Tubing (Factory-Shipped Orientation) section for drain tube
extension details. (See Fig. 5.)
CONDENSATE TRAP TUBING
(FACTORY-SHIPPED ORIENTATION)
NOTE
: See Fig. 6 or tube routing label on main furnace door to
confirm location of these tubes.
1. Collector Box Drain, Inducer Housing Drain, Relief Port,
and Pressure Switch Tubes. These tubes should be factory
attached to condensate trap and pressure switch ready for
use in UPFLOW applications. These tubes can be
identified by their connection location and also by a color
label on each tube. These tubes are identified as follows:
collector box drain tube (blue label), inducer housing drain
tube (violet label or molded), relief port tube (green label),
and pressure switch tube (pink label).
2. Condensate Trap Drain Tube
The condensate trap drain connection must be extended
for field attachment by doing the following:
f. Determine location of field drain connection. (See Fig.
2 or 6.)
NOTE
: If internal filter or side Filter/Media Cabinet is used,
drain tube should be located to opposite side of casing from
return duct attachment to assist in filter removal.
g. Remove and discard casing drain hole plug button
from desired side.
h. Install drain tube coupling grommet (factory-supplied
in loose parts bag) in selected casing hole.
i. Slide drain tube coupling (factory-supplied in loose
parts bag) through grommet ensuring long end of
coupling faces blower.
