Lower Eat Ff Elay Imings; Normal Sequence Of Operation; Power U P; Heating Mode - Goodman GMV9 Installation & Operating Instructions Manual

100% CFM
OFF
50% CFM
1/2 min
Cooling Demand
• Profile C ramps up to 82% of the full cooling demand airflow
and operates there for approximately 7 1/2 minutes. The
motor then steps up to the full demand airflow. Profile C also
has a one (1) minute 100% OFF delay.
82% CFM
7 1/2 min
Cooling Demand
• Profile D ramps up to 50% of the demand for 1/2 minute,
then ramps to 82% of the full cooling demand airflow and
operates there for approximately 7 1/2 minutes. The motor
then steps up to the full demand airflow. Profile D has a 1/2
minute at 50% airflow OFF delay.
82% CFM
OFF 50% CFM
1/2 min 7 1/2 min
Cooling Demand
*
Ramping
Profile
Tap A
Ramping
Profile
Tap B
Ramping
Profile
Tap C
Ramping
Profile
Tap D
Ramping Profiles
*
( indicates factory setting)
6. Select the heating speed from the heating speed chart in the
Product Data Book applicable to your model* for your model.
The adjust setting (already established by the cooling speed
selection) determines which set of speeds are available. The
selected speed must provide a temperature rise within the
rise range listed with the particular model.
Example: The *MV90704BXA is set for 990 CFM on
cooling, the "ADJUST" is set to "-" (minus). The
four heating speeds available are "A Minus", "B
Minus", "C Minus", and "D Minus". "A Minus"
has a rise of 56°F for both stages which is within
the 30-60°F rise range for the *MV90704BXA.
This setting will keep electrical consumption to
a minimum. Set the "Heat" speed DIP switches
to "A".
7. Select the desired "heating" speed tap by positioning switches
7 and 8 appropriately. Refer to figure above. Turn off power
to furnace for a minimum of 10 seconds, allowing motor to
*NOTE: Please contact your distributor or our website for the applicable product data book referred to in this manual.
IO-243
100% CFM
1 min
100% CFM 100% CFM
1 min
100% CFM 50% CFM
1/2 min
8 7 6 5 4 3 2 1
O O
F F
F F
8 7 6 5 4 3 2 1
O O
F F
F F
8 7 6 5 4 3 2 1
O O
F F
F F
8 7 6 5 4 3 2 1
O O
F F
F F
reset and recognize new speed selection. Turn on power to
furnace. Verify selected CFM by counting the green CFM
OFF
LED blinks.
In general lower heating speeds will: reduce electrical consumption,
lower operating sound levels of the blower, and increase the outlet
air temperature delivered to the home. The speeds available allow
the blower performance to be optimized for the particular
homeowner's needs.
B H O
LOWER EAT FF
The integrated control module provides a selectable heat off delay
function. The heat off delay period may be set to 90, 120, 150, 180
OFF seconds using the DIP switches or jumper provided on the control
module. The delay is factory shipped at 150 seconds but may be
changed to suit the installation requirements and/or homeowner pref-
erence. Refer to the following figures for switch positions and corre-
sponding delay times.
ON
ON
OFF
ON
OFF
OFF
ON
OFF
OFF
(* indicates factory setting)
XV XV XV XV. NO XV . NO . NO . NORM . NO RMAL SEQUEN RM RM RM AL SEQUENCE O AL SEQUEN AL SEQUEN AL SEQUEN
P U
OWER P
The normal power up sequence is as follows:
•
115 VAC power applied to furnace.
•
Integrated control module performs internal checks.
•
Integrated control module flashes LED one time.
•
Integrated control module monitors safety circuits
continuously.
•
Furnace awaits call from thermostat.
H M
EATING ODE
The normal operational sequence in heating mode is as follows:
•
R and W1 (or R and W1/W2) thermostat contacts close,
initiating a call for heat.
•
Integrated control module performs safety circuit checks.
•
Induced draft blower is energized on high speed for a 10-
second prepurge. Humidifier terminals are energized with
induced draft blower.
•
Induced draft blower steps to low speed following prepurge.
Low stage pressure switch contacts are closed.
31
D T
ELAY IMINGS
Heat Off
3
Delay
2
90 Seconds
1
3
Heat Off
Delay
2
120 Seconds
1
*
3
Heat Off
Delay
2
150 Seconds
1
3
Heat Off
Delay
2
180 Seconds
1
Heat Off Delay
Heat Off Delay Switches
CE O CE O CE OF OPERA CE O F OPERA F OPERA F OPERATI F OPERA TIO O O O O N N N N N TI TI TI
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