Read online or download PDF. Page 9 / 24. Carrier WEATHERMAKER 8000 58ZAV User Manual. Carrier Kiln Manuals Directory ManualsDir.com - online owner manuals library Search. Looking for Carrier parts for the 8000 or 9200 Weathermaker? We stock the inducer motors, flame sensors, capacitors, and much more. Make sure to get the complete model number from your Carrier Weathermaker furnace for a list of the matching parts. Stop worrying about your furnace and how you’re going to fix it. The Carrier WeatherMaker 8000 Gas Furnace will meet your home heating requirements. This furnace family provides the widest range of heating capacities available. The superior attention to cabinet detail is obvious. The Carrier WeatherMaker 8000 features 1-piece, 2000 Carrier Corporation Form No. 58WAV-9PD seamless, wrap-around construction.
Step 3—Supply Air Connections
DOWNFLOW FURNACES
Connect supply-air duct to supply-air opening on furnace. The
supply-air duct attachment must ONLY be connected to furnace
supply/outlet or air conditioning coil casing (when used), when
installed on non-combustible material. When installed on combus-
tible material, supply-air duct attachment must ONLY be con-
nected to an accessory subbase or factory approved air condition-
ing coil casing. DO NOT cut main furnace casing to attach supply
side air duct, humidifier, or other accessories. All accessories
MUST be connected external to furnace main casing.
HORIZONTAL FURNACES
Connect supply-air duct to supply air opening on furnace. The
supply-air duct attachment must ONLY be connected to furnace
supply/outlet or air conditioning coil casing (when used). DO NOT
cut main furnace casing to attach supply side air duct, humidifier,
or other accessories. All accessories MUST be connected external
to furnace main casing.
Step 4—Return Air Connections
The return-air duct must be connected to return-air opening
provided as shown in Fig. 1. DO NOT cut into casing sides or back
to attach any portion of return-air duct. Bypass humidifier connec-
tions should be made at ductwork or coil casing sides exterior to
furnace.
Fig. 3—Confined Space: Air for Combustion and
Ventilation from an Unconfined Indoor Space
A93387
RETURN
AIR
6″ MIN
(FRONT)
†
SUPPLY AIR
VENT THROUGH ROOF
(CATEGORY I)
1 SQ IN.
PER 1000
BTUH* IN DOOR
OR WALL
12″ MAX
1 SQ IN.
PER 1000
BTUH* IN DOOR
OR WALL
12″ MAX
INTERIOR
HEATED
SPACE
* Minimum opening size is 100 sq in. with
minimum dimensions of 3 in.
†
Minimum of 3 in. when type B-1 vent is used.
UNCONFINED
SPACE
Fig. 4—Confined Space: Air for Combustion and
Ventilation from Outdoors
A93388
DUCTS TO
OUTDOORS
1 SQ IN.
PER 4000
BTUH
*
RETURN
AIR
VENT
THROUGH
ROOF
(CATEGORY I)
D
B
A
C
E
1 SQ IN.
PER 4000
BTUH
DUCT
TO
OUTDOORS
SUPPLY AIR
1 SQ IN.
PER 2000
BTUH*
DUCTS
TO
OUTSIDE
12″ MAX
12″ MAX
CONFINED
SPACE
12″
MAX
12″
MAX
1 SQ IN.
PER 4000
BTUH
*
OUTDOORS
1 SQ IN.
PER 4000
BTUH
*
1 SQ IN.
PER 2000
BTUH*
12″ MAX
Use any of the following
combinations of openings:
A & B C & D D & E F & G
NOTE:
*Minimum dimensions of 3 in.
F
G
Table 2—Minimum Free Area Of Combustion Air Opening
58ZAV
FURNACE
INPUT
(BTUH)
AIR FROM UNCON-
FINED INDOOR
SPACE
OUTDOOR AIR THROUGH
VERTICAL DUCTS
OUTDOOR AIR THROUGH
HORIZONTAL DUCTS
OUTDOOR AIR THROUGH
SINGLE DUCT
Free Area
of Opening
(Sq In.)
Free Area of
Opening and Duct
(Sq In.)
Round
Pipe
(In. Dia)
Free Area of
Opening and Duct
(Sq In.)
Round
Pipe
(In. Dia)
Free Area of
Opening and Duct
(Sq In.)
Round
Pipe
(In. Dia)
46,000
100
11.50
4
23.0
6
15.33
5
69,000
100
17.25
5
34.5
7
23.00
6
92,000
100
23.00
6
46.0
8
30.67
7
115,000
115
28.75
7
57.5
9
38.33
7
135,000
135
33.75
7
67.5
10
45.00
8
* Free area shall be equal to or greater than the sum of the areas of all vent connectors in the confined space. Opening area must be increased if other gas appliances
in the space require combustion air.
6
Carrier Weathermaker 8000 Manual Download Pdf
Two quick-connect terminals marked EAC-1 and EAC-2 are
provided for EAC connection. (See Fig. 14.) These terminals
are energized with 115-v, (1.5-amp maximum) during blower
motor operation.
2. Humidifier (HUM)
A quick-connect terminal (HUM) and screw terminal (C
OM
)
are provided for 24-v humidifier connection. (See Fig. 16.)
HUM terminal is energized with 24-v (0.5-amp maximum)
after inducer pressure switch closes.
Do not connect furnace control HUM terminal to HUM
(humidifier) terminal on Thermidistat™, Zone Controller, or
similar device. See Thermidistat, Zone Controller, thermostat,
or controller manufacturer’s instructions for proper connec-
tion. A failure to follow this warning could result in fire.
NOTE: A field-supplied, 115-v controlled relay connected to
EAC terminals may be added if humidifier operation is desired
during blower operation.
Step 11—Venting
Refer to the national or local installation code such as NFGC in the
United States, or the NSCNGPIC in Canada for proper vent sizing
and installation requirements. Use the enclosed Installation In-
structions (Single-Stage Vent Tables for Category I Fan-Assisted
Furnaces) for a quick, easy reference.
After fully assembling the vent connector to the furnace flue collar,
securely fasten the vent connector to the collar with two field-
supplied, corrosion-resistant, sheet metal screws located 180° apart
and midway up the collar.
The horizontal portion of the venting system shall maintain a
minimum of 1/4-in. upward slope per linear ft and it shall be
rigidly supported every 5 ft or less with hangers or straps to ensure
that there will be no movement after installation.
Step 12—Start-up, Adjustment, and Safety Check
GENERAL
NOTE: Proper polarity must be maintained for 115-v wiring. If
polarity is incorrect, control status indicator light will flash rapidly
and furnace will not operate.
The furnace must have a 115-v power supply properly connected
and grounded. Proper polarity must be maintained for correct
operation. Thermostat wire connections at R, W, C, and Y must be
made at the furnace 24-v terminal block on the control board. The
gas service pressure must not exceed 0.5 psig (14-in. wc), but must
be no less than 0.16 psig (4.5-in. wc).
Before operating the furnace, check each manual reset switch for
continuity. If necessary, press the button to reset the switch.
The blower compartment door must be in place to complete the
115-v circuit to the furnace.
This furnace is equipped with 2 manual reset limit switches in
the gas control area. The switches will open and shut off
power to the gas valve if a flame rollout or an overheating
condition occurs in the gas control area. DO NOT bypass the
switches. Correct inadequate combustion air supply problem
and reset the switches.
SEQUENCE OF OPERATION
Furnace control must be grounded for proper operation or
control will lockout. Control is grounded through green wire
routed to gas valve and burner bracket screw.
Using the schematic diagram shown in Fig. 16, follow the
sequence of operation through the different modes. Read and
follow the wiring diagram very carefully.
NOTE: If there is a power interruption and any thermostat call,
the control will initiate a 90-sec blower only on period before
starting another cycle.
1. Heating mode
When the thermostat 'calls for heat,' R-W circuit closes. The
furnace control performs a self-check, verifies the pressure
switch contacts are open, and starts the inducer motor.
a. Prepurge period—As the inducer motor comes up to speed,
the pressure switch contacts close to begin a 15-sec
prepurge period.
b. Igniter warm-up—At the end of the prepurge period, the
Carrier Weathermaker 8000 Parts Manual
igniter is energized for a 17-sec igniter warm-up period.
c. Ignition sequence—When the igniter warm-up period is
completed, the gas valve opens, permitting gas flow to the
burners where it is ignited. After 5 sec, the igniter is
de-energized and a 2-sec flame-sensing period begins.
d. HUM terminal is energized with the gas valve. See
Carrier Weathermaker 8000 Service Manual
Accessories in Electrical Connections section.
e. Flame-sensing—When burner flame is sensed, the control
begins the blower on delay period and continues holding
the gas valve open. If burner flame is not sensed, the
control closes the gas valve and repeats the ignition cycle.
NOTE: Ignition sequence will repeat 3 additional times before a
lockout occurs. Lockout automatically resets after 3 hr, or can be
manually reset by turning 115v off (not at thermostat) for 3 sec
minimum, then on again.
f. Blower on delay—Forty-five sec after burner flame is
proven, the blower motor is energized on heating speed.
Simultaneously, terminals HUM and C
OM
-24V for humidi-
fier, and EAC-1 and EAC-2 for EAC are energized. If
jumper is on pin 6 and pin 9, the blower on delay period is
66 sec.
g. Blower off delay—When the thermostat is satisfied, the
circuit between R and W is broken, de-energizing the gas
valve and stopping gas flow to the burners. The blower
motor, and EAC remain energized 90, 135, 180, or 225 sec
(depending on the blower off time selection). The furnace
is factory set for a 135-sec blower off delay period.
h. Post-purge—The inducer motor remains energized 5 sec
after the burners are extinguished. If jumper is on pin 6 and
pin 9, the post-purge period is 15 sec.
2. Cooling mode
Carrier Weathermaker 8000 Manual Download Free
12