Bryant 698B instruction manual Wiring Diagram Notes, XII. Check Charge Unit Charge

WIRING DIAGRAM NOTES:

1.Wiring must conform to NEC or local codes.

2.Underlined letter on thermostat terminal indicates its usage. For example: O/W2 means O is energized in cooling mode.

3.Refer to indoor unit Installation Instructions for any additional features and wiring information.

4.Non-Programmable Model 2S01–B, when used in heat pump installations (jumper R19 NOT cut), uses O/W2 to control reversing valve.

5.Furnace must control its own second-stage operation via furnace control algorithms. Refer to furnace Installation Instructions for proper setup.

6.To activate dehumidify function on FK4 or FV4, remove J1 jumper at fan coil control board.

7.Heat pump MUST have a high-pressure switch for dual fuel applications.

8.Outdoor air temperature sensor must be attached in all dual fuel applications.

9.Thermidistat Dip Switch No. 1 should be set in ON position for heat pump installations.

10.Thermidistat Dip Switch No. 2 should be set in the ON position for dual capacity compressor operation.

11.Thermidistat Configuration Option No. 10 “Dual Fuel Selection” must be turned ON in all dual fuel applications.

12.Dual Fuel Dip Switch–D (no. 4) must be set in the ON position for dual capacity compressor operation.

13.The DE jumper located next to the DHUM terminal must be removed to enable the DEHUM input.

NOTE: If unit has not operated within the past 12 hr or following a unit power-up, upon the next thermostat high- or low-speed demand, unit operates for a minimum of 5 minutes on high speed.

4.Close electrical disconnects to energize system.

5.Set room thermostat at desired temperature. Be sure the set point is below indoor ambient and is set low enough to energize desired speed.

6.Set room thermostat to COOL or HEAT and fan control to AUTO or ON as desired. Wait for appropriate time delay(s). Operate unit for 15 minutes. Check refrigerant charge.

NOTE: Bryant electronic thermostats are equipped with a 15 minute staging timer. This timer prevents the dual capacity system from operating at high capacity until unit has been operating in low capacity for 15 minutes unless there is at least a 5°F difference between room temperature and thermostat set point. To force high capacity, adjust the set point at least 5° below room ambient for cooling or 5° above room ambient for heating.

XII. CHECK CHARGE

WARNING: Service valve gage ports are not equipped with Schrader valves. To prevent personal injury, make sure gage manifold is connected to the valve gage ports before moving valves off fully back seated position. Wear safety glasses and gloves when handling refrigerant.

A. UNIT CHARGE

Factory charge is shown on unit rating plate. To check charge in cooling mode, refer to Cooling Only Procedure. To charge in heating mode, weigh the charge in.

FK4/FV4	TWO-SPEED
FAN COIL	HEAT PUMP	Y1

					DH
24 VAC HOT
		R			R
24 VAC COM			C		C
FAN
		G			G
COOL/HEAT
	Y/Y2			Y/Y2
STAGE 2
HEAT STAGE 3	W/W2				W1
					W2
RVS COOLING
	O/W2				O
COOL/HEAT
		Y1			Y1
STAGE 1
N/A		B
OUTDOOR		S1
SENSOR
CONNECTION		S2

J1 JUMPER

J2 JUMPER

Y2

R

LLS

C

Y2

Y2

W1

O

Y1

Y1

A00333

Fig. 14—Typical Solenoid Valve Wiring

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