Electrostatic Discharge (Esd) Precautions; Introduction - Carrier 58MCB Nstallation, Start-Up, And Operating Instructions

BLOWER SHELF
CONDENSATE
TRAP (INSIDE)
ALTERNATE DRAIN
TUBE LOCATION
CONDENSATE TRAP
DRAIN TUBE LOCATION
UPFLOW APPLICATIONS
SLOT FOR SCREW
3 4
(19mm)
WIRE TIE
GUIDES
(WHEN USED)
FRONT VIEW
ELECTROSTATIC DISCHARGE (ESD)
PRECAUTIONS
CAUTION
!
UNIT DAMAGE HAZARD
Failure to follow this caution may damage furnace
components.
Electrostatic discharge can affect electronic components.
Take precautions during furnace installation and servicing to
protect the furnace electronic control. Precautions will
prevent electrostatic discharges from personnel and hand
tools which are held during the procedure. These precautions
will help to avoid exposing the control to electrostatic
discharge by putting the furnace, the control, and the person
at the same electrostatic potential.
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 a clean, unpainted, metal surface of the
furnace chassis which is close to the control. Tools held in
a person's hand during
satisfactorily discharged.
FURNACE
CONDENSATE
DOOR
TRAP
FURNACE
SIDE
1 4
FIELD
26
1
DRAIN
(667mm)
(38mm)
CONN
SIDE VIEW FRONT VIEW
DOWNFLOW AND ALTERNATE
EXTERNAL UPFLOW APPLICATIONS
HORIZONTAL
APPLICATION
(OPTIONAL)
1 2
(88mm)
1
1 8
(181mm)
7
3 4
(44mm)
1
7 8
(3mm)
1 4
2
(57mm)
SIDE VIEW
Fig. 5 - - Condensate Trap
grounding will be
FURNACE
DOOR
7 8
(124mm)
4
4
(102mm)
1 2 FIELD
DRAIN
CONN
END VIEW
1/4" (6mm)
COLLECTOR BOX TO
TRAP RELIEF PORT
1/2 (13mm)
INDUCER HOUSING
DRAIN CONNECTION
5/8 (16mm)
COLLECTOR BOX
DRAIN CONNECTION
SCREW HOLE FOR
UPFLOW OR DOWN-
FLOW APPLICATIONS
(OPTIONAL)
1/2 IN. (13mm) PVC OR CPV
5. After touching the chassis, you may proceed to service the
control or connecting wires as long as you do nothing that
recharges 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 (recharge your body with
static electricity), firmly touch furnace again before
touching control or wires.
7. Use this procedure
(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 5 before
bringing the control or yourself into 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.

INTRODUCTION

The model 58MCB 4-way multipoise, Gas-Fired, Category IV,
condensing furnace is available in model sizes ranging from input
capacity of 40,000 to 138,000 Btuh as a direct vent (2-pipe)
application, and in model sizes ranging from input capacity of
40,000 to 120,000 Btuh as a non-direct vent (1-pipe) application.
- - 8 - -
FURNACE
SIDE
3 4 3 4
5 (146mm) 5 (146mm)
4
(102mm)
1 4
26
3 4
(667mm)
(19mm)
FRONT VIEW
HORIZONTAL
APPLICATIONS
for installed and uninstalled
A93026