Electrostatic Discharge (Esd) Precautions; Introduction; Applications; General - Carrier 58UVB series Installation, Start-Up, And Operating Instructions Manual

ELECTROSTATIC DISCHARGE (ESD)
PRECAUTIONS
CAUTION
!
UNIT DAMAGE HAZARD
Failure to follow this caution may result in damage to unit
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.
1. 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
ELECTROSTATIC CHARGE TO GROUND.
2. 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 grounding will be satisfactorily
discharged.
3. 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.).
4. If you touch ungrounded objects (recharge your body with
static electricity), firmly touch furnace again before
touching control or wires.
5. Use this procedure for installed
(ungrounded) furnaces.
6. 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.
7. An ESD service kit (available from commercial sources)
may also be used to prevent ESD damage.

INTRODUCTION

The model 58UVB Direct Vent, Upflow, Gas- -Fired, Category IV,
condensing furnace is available in model sizes ranging in input
capacities of 60,000 to 120,000 Btuh.

APPLICATIONS

Step 1 —General
Some assembly and modifications are required for condensate
trap drainage tubes. (See Fig. 6, 7 and 8.) All drain and pressure
tubes are connected as shown in Fig. 7 from the factory. See
appropriate application instructions for these procedures.
YOUR BODY'S
and uninstalled
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.
Step 2 —Upflow Application Only
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 (FACTORY- -SHIPPED LOCATION)
The condensate trap is factory installed in the blower shelf. 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 section for drain tube extension
details. (See Fig. 6.)
CONDENSATE TRAP TUBING (FACTORY- -SHIPPED
CONFIGURATION)
NOTE: See Fig. 7 or review 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 internal trap applica-
tions. 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:
a. Determine location of field drain connection. (See Fig.
2 or 7.)
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.
b. Remove and discard casing drain hole plug button
from desired side.
c. Install drain tube coupling grommet (factory- -supplied
in loose parts bag) in selected casing hole.
d. Slide drain tube coupling (factory- -supplied in loose
parts bag) through grommet so long end of coupling
faces blower.
e. Cement 2 factory- -supplied 1/2- -in. street CPVC
elbows to rigid drain tube connection on condensate
trap. (See Fig. 7.) These elbows must be cemented
together and cemented to condensate trap drain
connection.
6