Carrier WeatherMaker 8000 - ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS PROCEDURE

ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS
PROCEDURE
Electrostatic discharge can affect electronic components.
Take precautions during furnace installation and servicing to
protect the furnace electronic control. Precautions will pre-
vent 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. DO NOT TOUCH THE
CONTROL OR ANY WIRE CONNECTED TO THE CON-
TROL PRIOR TO DISCHARGING YOUR BODY’S ELEC-
TROSTATIC 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 and uninstalled (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
Table 2—Dimensions (In.)
UNIT SIZE A D E VENT CONN SHIP. WT (LB)
045-08 14-3/16 12-9/16 12-11/16 4 122
045-12 14-3/16 12-9/16 12-11/16 4 124
070-08 14-3/16 12-9/16 12-11/16 4 132
070-12 14-3/16 12-9/16 12-11/16 4 134
091-14 17-1/2 15-7/8 16 4 150
091-16 21 19-3/8 19-1/2 4 154
111-12 17-1/2 15-7/8 16 4 160
111-16 21 19-3/8 19-1/2 4 166
111-20 24-1/2 22-7/8 23 4 184
136-16 21 19-3/8 19-1/2 5 178
136-20 24-1/2 22-7/8 23 5 194
155-20 24-1/2 22-7/8 23 5 204
Fig. 1—Dimensional Drawing
A88367
A
D
13
⁄16″
E
11
⁄16″
11
⁄16″
28
1
⁄2″
39
7
⁄8″
24
5
⁄16″
11
⁄16″
3″
2
1
⁄16″
1″
12
5
⁄16″
5
3
⁄8″
5
13
⁄16″
2
3
⁄8″
AIR INLET
7
⁄8-IN. DIA HOLE
POWER ENTRY
7
⁄8-IN. DIA
ACCESSORY
1
3
⁄4-IN. DIA HOLE
GAS ENTRY
1
⁄2-IN. DIA HOLE
THERMOSTAT
WIRE ENTRY
SIDE INLET
FLUE COLLAR
1. Two additional
7
⁄8-in. dia knockouts are located in the top plate.
2. Minimum return-air opening at furnace:
a. For 800 CFM–16-in. round or 14
1
⁄2 x 12-in. rectangle.
b. For 1200 CFM–20-in. round or 14
1
⁄2 x 19
1
⁄2-in. rectangle.
c. For 1600 CFM–22-in. round or 14
1
⁄2 x 23
1
⁄4-in. rectangle.
d. For airflow requirements above 1800 CFM, use both side inlets,
a combination of 1 side inlet and the bottom, or the bottom only.
NOTES:
5
3
⁄8″
5
13
⁄16″
2
3
⁄8″
2
11
⁄16″
1″
2
1
⁄16″
19″
13
⁄16″
7
⁄8-IN. DIA
POWER ENTRY
AIRFLOW
OUTLET
1
1
⁄2-IN. DIA
R.H. GAS ENTRY
7
⁄8-IN. DIA ACCESSORY
1
⁄2-IN. DIA THERMOSTAT
WIRE ENTRY
SIDE INLET
14
1
⁄2″
1″
23
1
⁄4″
SIDE RETURN
DUCT LOCATION
1
3
⁄4″
TYP 1″
5
⁄8″
TYP
2