to a level which causes the Thermidistat™ to close its contacts. When the contacts close, the airflow will return to 100 percent of selected cooling airflow. To activate this mode wire in Thermidistat™ see jumper in Fig. 10.
e.DEHUMIDIFY AND SUPER DEHUMIDIFY CAPABILITIES
This model unit is capable of responding to a signal from Thermidistat™ to operate in comfort control modes such as Super Dehumidify Mode. Consult literature provided with Thermidistat™ to determine if these operating modes are available, and to see control set up instructions. No special setup or wiring of unit is required.
F.683B Sequence of Operation
a.CONTINUOUS FAN
(1.) Thermostat closes circuit R to GÐThe Blower runs at continuous fan airflow
b.COOLING MODE
(1.) If indoor temperature is above temperature set point and humidity is below humidity set point, thermostat closes circuits R to G, R to Y/Y2 and R to OÐThe unit delivers single speed cooling airflow.
c.COOLING
(1.) If indoor temperature is above temperature set point and humidity is above humidity set point, Thermidistat™ closes circuits R to G, R to Y/Y2, R to O and Thermidis- tat™ opens R to DHÐThe unit delivers airflow which is approximately 80 percent of the nominal cooling airflow to increase the latent capacity of the system.
d.COOLING
NOTE: Thermidistat™ is capable of providing Super Dehu- midify operation mode and must be configured as outlined in its installation instructions. Consult indoor control literature to deter- mine if control is capable of providing Super Dehumidify inputs and for configuration instruction.
(1.) If the indoor temperature is below the temperature set point and the humidity is above the humidity set point, the Thermidistat™ closes circuit R to O, opens circuits R to DH and R to G, and closes circuit R to Y/Y2. If circuit R to G is closed
e. GAS HEATING MODE
(Occurs if outdoor temperature is below outdoor temperature change over setpoint.)
(1.) Thermostat closes circuit R to W/W1ÐThe unit delivers the selected gas heat airflow. The IGC will control 45 sec. on delay with no airflow and 45 sec. off delay.
f. HEAT PUMP HEATING MODE
(Occurs if outdoor temperature is above outdoor temperature change over setpoint.)
(1.) Thermidistat™ closes circuit R to G and R to Y/Y2±The unit delivers selected heat pump heating airflow.
g. HEATING MODEÐSUPER COMFORT HEAT OPERA-
TION
Ð7Ð
NOTE: The Thermidistat™ is capable of providing Super Com- fort Heat operation mode and must be configured as outlined in its installation instructions. The system must be installed with appro- priate outdoor temperature sensor. Consult Thermidistat™ litera- ture for configuration instructions. Consult sensor instructions for sensor installation details.
If the outdoor temperature is in the range of 12° to 40° F, the Thermidistat™ closes circuit R to Y/Y2 and opens circuit R to G. If circuit R to G is closed
G. | Easy Select™Ð702B & 602B |
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ICM PRINTED CIRCUIT BOARD |
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A | 1075 | 875 | 725 | 625 |
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VIO |
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C | ORN |
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BLK |
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12 PIN CONNECTOR
C01033
Fig. 11ÐDetail of SPP Printed-Circuit Board
EASY SELECT™ CONFIGURATION TAPS FOR 702B & 602B
Easy Select™ taps are used by the installer to configure a system. The ICM motor uses the selected taps to modify its operation to a
The unit must be configured to operate properly with system components with which it is installed. To successfully configure a basic system (see information printed on circuit board label located next to select pins), move the 6 select wires to the pins which match the components used.
a. AUX HEAT kW/CFMÐSELECT HEATER RANGE FOR SIZE OF ELECTRIC HEATER INSTALLED
Installer must select the auxiliary heat airflow approved for application with kW size heater installed. If no heater is installed, this step can be skipped. Each select pin is marked with a range of heaters for which airflow (also marked), is approved. For increased comfort, select the narrowest kW range matching the heater size, for example, 0±10 for 10±kW heater. This airflow must be greater than the minimum for CFM for electric heater application with the size system installed for safe and continuous operation. (See Tables 16, 17 & 18 for airflow delivery and minimum CFM.) Note that airflow marked is the
