Continuous Fan Operation - Carrier bryant 607C-C Installation Instructions Manual

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Table of Contents

NOTE: If accessory electric heat is installed, and the electric heat

fan speed is chosen to be the same as the normal cooling fan speed,

the dry airflow must meet or exceed the minimum airflow speed

specified in Table 2 for the specific size unit.

Two Cooling Fan Speeds Set-up (Dehumidification

feature used)

IMPORTANT: Dehumidification control must open control

circuit on humidity rise above set point.

Use of the dehumidification cooling fan speed requires use of

either a 24 VAC dehumidistat or a thermostat which includes

control of a 24 VAC dehumidistat connection. In either case, the

dehumidification control must open the control circuit on humidity

rise above the dehumidification set point.

1. Using Fig. 16, move the two pin DEHUM jumper from the

"STD" position to the "DEHUM" position.

2. Remove fan speed tap wire from the "LOW" terminal on

the interface fan board (IFB) (See Fig. 16).

3. Determine correct normal cooling fan speed for unit and

application. Add the wet coil pressure drop in Table 8 to

the system static to determine the correct cooling airflow

speed in Table 5 that will deliver the nominal cooling

airflow as listed in Table 1 for each size.

NOTE:

If accessory electric heat is installed, the dry

airflow must meet or exceed the minimum airflow speed

specified in Table 2 for the specific size unit. The electric

heat fan speed will be the same as the normal cooling fan

speed.

4. Remove the vinyl cap off of the desired speed tap wire

(Refer to Table 3 for color coding) for the normal cooling

fan speed and place desired speed tap wire on "HIGH" on

the interface board.

5. Refer to airflow tables (Table 5) to determine allowable

speeds for the dehumidification cooling fan speed. In Table

5, speeds that are not allowed for dehumidification cooling

are shaded.

6. Remove the vinyl cap off of the desired speed tap wire

(Refer to Table 3 for color coding) for the dehumidification

cooling fan speed and place desired speed tap wire on the

"LOW" connection on the interface board (IFB). Verify

that static pressure is in the acceptable range for the speed

tap to be used for dehumidification cooling.

7. Use any spare vinyl plugs to cap any unused speed tap

wires.

Single Speed Cooling With Higher Electric Heat Speed

This unit can also be configured to operate with single speed

cooling and a higher speed for an accessory electric heater.

LEGEND

HPS – High Pressure Switch

LCS – Loss of Charge Switch

OUTDOOR COIL

HP S

Accurater

Metering De vice

Arrow indicates direction of flo w

Fig. 15 - - Typical Heat Pump Operation, Cooling Mode

1. Move the two pin DEHUM jumper located on control

board (see Fig. 16) from the "STD" position to the "DE-

HUM" position.

2. See Table 2 for minimum airflow for electric heat operation.

Add electric heater and filter pressure drop to duct system

static pressure to determine total external static pressure.

3. Select speed tap from Table 5 that will achieve required air-

flow from Table 2.

4. Remove the vinyl cap off of the desired speed tap wire (Re-

fer to Table 3 for color coding).

5. Connect the desired speed tap wire to the "HIGH" terminal

on the interface fan board (IFB).

CAUTION

UNIT OPERATION HAZARD

Failure to follow this caution may result in unit component

damage or improper operation.

To use this mode, a speed connection must be made on the

"HIGH" terminal that meets or exceeds the minimum

airflow found in Table 2.

Table 3 – Color Coding for Indoor Fan Motor Leads

Black = High Speed

Orange = Med- -High Speed

Red = Med Speed

Pink = Med- -Low Speed

Blue = Low Speed

WARNING

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal

injury or death.

Disconnect electrical power to the unit and install lockout

tag before changing blower speed.