Goodman Mfg VC8 User Manual
Page 28
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S
TART
-
UP
P
ROCEDURE
AND
A
DJUSTMENT
7. Select the heating speed for your model from the heating
speed chart in the Specification Sheet. 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 *MVC80704BX is set for 990 CFM on
cooling, the “ADJUST” is set to “+” (plus).
The four heating speeds available are “A
Plus”, “B Plus”, “C Plus”, and “D Plus”. “A
Plus” has a rise of 38°F for both stages
which is within the 20-50°F rise range for
the *MVC80704BX . This setting will keep
electrical consumption to a minimum. Set
the “Heat” speed DIP switches to “A”.
7
8
A
OFF
OFF
B*
ON
OFF
C
OFF
ON
D
ON
ON
Switch Bank: S4
Heating
Airflow
DIP Switch No.
(*Indicates factory setting)
8. Select the desired “heating” speed tap by positioning
switches 7 and 8 appropriately. Refer to figure above.
Verify CFM by noting the number displayed on the dual
7-segment LED display.
In general lower heating speeds will: reduce electrical consump-
tion, 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
LOWER
H
EAT
O
FF
D
ELAY
T
IMINGS
The integrated control module provides a selectable heat off
delay function. The heat off delay period may be set to 90, 120,
150, 180 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 require-
ments and/or homeowner preference. Refer to the following fig-
ures for switch positions and corresponding delay times.
1
2
90 seconds
OFF
OFF
120 seconds
ON
OFF
150 seconds*
OFF
ON
180 seconds
ON
ON
Heat OFF Delay
DIP Switch No.
Switch Bank: S1
(*Indicates factory setting)
Heat Off Delay Dipswitches
*DVC81155CX*
*DVC80905CX*
*DVC80703BX*
*MVC81155CX*
*MVC80905CX*
*MVC80704BX*
To set airflow:
C ------- 7.5 min/82% 60 sec/100%
A ------- -------- 60 sec/100%
TAP 1 2 3 4 5 6 7 8
To set Comfort Mode:
B ON OFF ON OFF ON OFF ON OFF
C OFF ON OFF ON OFF ON OFF ON
B ------- 30 sec/50% 60 sec/100%
D ON ON ON ON ON ON ON ON
D 30 sec/50% 7.5 min/82% 30 sec/50%
Select desired Comfort Mode profile
(see profiles above). Set switches 5 and 6 to the appropriate
ON / OFF positions.
A OFF OFF OFF OFF OFF OFF OFF OFF
Model Tap Low Stage High Stage Low Stage High Stage
Cool Cool Heat Heat
Cool Adjust Profile Heat
Selection Selection Selection Selection
Switches Switches Switches Switches
Profiles Pre-Run Short-Run OFF Delay
(1) Select model and desired
high stage cooling airflow. Determine the corresponding tap
( A, B, C, or D ). Set dip switches 1 and 2 to the appropriate
ON / OFF positions. (2) Select model and desired high stage
heating airflow. Determine the corresponding tap ( A, B, C, or
D ). Set dip switches 7 and 8 to the appropriate ON / OFF
positions. (3) Select the airflow adjustment factor taps A and
D are 1; Tap B is +10%; Tap C -10%. Set dip switches 3 and 4
to the appropriate ON / OFF positions.
Speed Selection Dip Switches
390
520
650
780
A
B
C
D
600
800
1000
1200
735
805
875
935
1050
1150
1250
1350
520
715
910
1170
A
B
C
D
800
1100
1400
1800
945
1015
1085
1155
1350
1450
1550
1650
553
748
943
1203
A
B
C
D
850
1150
1450
1850
1085
1155
1225
1260
1550
1650
1750
1800
390
520
715
910
A
B
C
D
600
800
1100
1400
875
945
1015
1085
1250
1350
1450
1550
520
715
910
1170
A
B
C
D
800
1100
1400
1800
1050
1120
1190
1260
1500
1600
1700
1800
520
715
910
1175
A
B
C
D
800
1100
1400
1800
1210
1225
1245
1260
1725
1750
1775
1800
NOTE: Airflow data shown applies to legacy mode operation only. For a fully communicating
system, please see the outdoor unit’s installation instructions for cooling and pump heating
airflow data. See ComfortNet™ System - Airflow Consideration section for details.