Roberts Gorden HP 230 V 3, HP 208 V 1 120 60 Hz, Outside Air Blower External Wiring Diagram

SYSTEM CONTROL INSTALLATION, OPERATION AND SERVICE MANUAL

FIGURE 8: External Wiring Diagram ROBERTS GORDON® EP-100 or EP-201 120 V 1 Ø Pump with Out- side Air Blower

Outside Air	Pump
Blower

		120 V
120 V		1 Ø
1 Ø		60 Hz
60 Hz
	L
	N
Ground
G	N	L	N L
	POWER		PUMP 1
	SUPPLY

Optional power supply for Outside Air Blower

Typical wiring for Load Relay

Package (P/N 05023000)

Live out to the	Coil connections
	to Pump L & N
outside air	Outputs from
blower
	Control Panel
Outside Air
Blower
Live in	3	Coil
		6
	2	5
	1	4
		Coil
Relay Receptacle
Back Plate

CR	120 V
L	1 Ø

N 60 Hz

	Pump	TWO PUMP SYSTEM (optional)
		Pump 1 may be used for all zones.
		Pump 2 may be used to control zone 3
		and/or zone 4. Refer to Pump 1 for configuration.
		Pressure switch	Pressure switch located
All burners must be		located at pump 2	at outside air blower
connected to Ground
(Not shown)
Zone 1 Zone 2 Zone 3 Zone 4
		Pressure switch	Pressure switch
		located at pump 1	located at outside air
				blower
		Low voltage thermostats
			located in heated zone
		Zone	Zone	Zone	Zone
		1	2	3	4

24 VAC

				24 VAC PS 1	R	R	R	R	PS 2
N L	N L	N L	N L	N L COM
Z1	Z2	Z3	Z4	PUMP 2
				24 VAC PS 1	W	W	W	W	PS 2
				COM

System Control

4.4 Outside Air Blower External Wiring Diagram

The external wiring diagram above shows the con- nections for four zones of system burners. System burners can be either CORAYVAC® or VANTAGE® NP (multiburner only).

The zones are connected to a single pump, unless zone 3 and/or zone 4 are selected to function with the optional pump 2. The external wiring diagram above shows connection to an EP-100 or EP-201 1 Ø motor. The diagram also shows the connection via a

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