System Control
Installation, Operation &
Service Manual
Installer
WARNING
Please take the time to read and understand
these instructions prior to any installation.
Installer must give a copy of this manual to the owner.
Improper installation, adjustment, alteration, service
or maintenance can result in death, injury or
property damage. Read the Installation, Operation
and Service Manual thoroughly before installing or
servicing this equipment.
Owner
Keep this manual in a safe place in order to provide
your serviceman with necessary information.
Installation must be done by a contractor qualified
in the installation and service of gas-fired heating
equipment or your gas supplier.
Roberts-Gordon LLC
1250 William Street
P.O. Box 44
Buffalo, New York 14240-0044
Telephone: 716.852.4400
Fax: 716.852.0854
Toll Free: 800.828.7450
P/N 10091601NA Rev. H 04/09
© 2009 Roberts-Gordon LLC
TABLE OF CONTENTS
SECTION 1: Introduction........................................................1
1.1 Safety...........................................................................1
1.2 What is a ROBERTS GORDON® System Control? ......1
1.3 Electrical Requirements ...............................................1
1.4 Check Installation Materials .........................................1
SECTION 2: Specifications ....................................................3
2.1 Material Specifications.................................................3
2.2 Electrical Specifications...............................................3
2.3 Pump Specifications ....................................................3
2.4 Burner Electrical Ratings.............................................4
2.5 Outside Air Supply Blower Electrical Ratings ..............4
2.6 Indicator Lights ............................................................4
2.7 Terminal Block Guide...................................................4
SECTION 3: Installation..........................................................5
3.1 Preparation ..................................................................5
3.2 Installing the System Control Panel .............................5
3.3 Select the External Wiring Diagram for the
Installation....................................................................5
3.4 System Configuration...................................................6
SECTION 4: Typical External Wiring Diagrams....................7
4.1 EP-100 or EP-201 120 V 1 Ø Pump External
Wiring Diagram............................................................7
4.2 EP-201 or EP-301 230 V 1 Ø External
Wiring Diagram............................................................8
4.3 EP-203 or EP-303 208 - 230 V (or 460 V) 3 Ø Pump
External Wiring Diagram..............................................9
4.4 Outside Air Blower External Wiring Diagram ............. 10
SECTION 5: Troubleshooting............................................... 12
5.1 Sequence of Operation.............................................. 12
SECTION 6: Replacement Parts .......................................... 14
6.1 Replacement Parts Instructions................................. 15
SECTION 7: The ROBERTS GORDON® System Control
Warranty ........................................................... 17
Roberts-Gordon LLC
© 2009
All rights reserved. No part of this work covered by the copyrights herein may be reproduced
or copied in any form or by any means - graphic, electronic, or mechanical, including
photocopying, recording, taping or information storage and retrieval systems - without the
written permission of Roberts-Gordon LLC.
Printed in U.S.A.
TABLE OF FIGURES
Figure 1: Panel Layout ..............................................................3
Figure 2: Terminal Block Guide.................................................4
Figure 3: Mounting Hole Layout................................................5
Figure 4: System Configuration.................................................6
Figure 5: External Wiring Diagram ROBERTS GORDON®
EP-100 and EP-201 120 V 1 Ø Pump ........................7
Figure 6: External Wiring Diagram ROBERTS GORDON®
EP-100, EP-201 or EP-301, 230 V 1 Ø Pump ............8
Figure 7: External Wiring Diagram ROBERTS GORDON®
EP-203 or EP-303, 208 - 230 V (or 460 V)
3 Ø Pump...................................................................9
Figure 8: External Wiring Diagram ROBERTS GORDON®
EP-100 or EP-201 120 V 1 Ø Pump with Outside
Air Blower ................................................................ 10
Figure 9: System Control Troubleshooting Chart .................... 13
Figure 10: System Control Internal Components Diagram...... 14
SECTION1:INTRODUCTION
SECTION 1: INTRODUCTION
1.1 Safety
1.3 Electrical Requirements
Your Safety is Important to Us! This
DANGER
symbol is used throughout the
manual to notify you of possible
fire, electrical or burn hazards.
Please pay special attention when
reading and following the warnings.
Installation, service and annual inspection of
controller must be done by an electrician qualified in
the installation and service of control systems for
heating equipment.
Installation, service and annual inspection of heater
must be done by a contractor qualified in the
installation and service of gas or oil fired heating
equipment.
Electrical Shock Hazard
Disconnect electric before service or
maintenance.
Control must be connected to a properly
grounded electrical source.
Failure to follow these instructions can
result in death or electrical shock.
Read this manual carefully before installation,
operation, or service of this equipment.
Failure to comply with the installation instructions will
invalidate the limited warranty set out on Page 17,
Section 7.
For optimum heater performance and safe heating
conditions, inspect and maintain heater(s) before
every heating season as necessary. Also, know and
maintain heater clearances to combustibles, see
heater Installation, Operation and Service Manual for
further details. If you require additional manuals, con-
tact your ROBERTS GORDON independent distrib-
utor or Roberts-Gordon LLC at (716) 852-4400, (800)
828-7450 or online at www.rg-inc.com.
The cable used for all wiring must be rated for 600 V.
The system control, burners, pump and outside air
blower must be electrically grounded in accordance
with the following:
®
®
United States: Refer to National Electrical Code ,
NFPA 70 - latest revision. Wiring must conform to the
®
most current National Electrical Code , local ordi-
®
1.2 What is a ROBERTS GORDON System
nances and any special diagrams furnished.
Control?
Canada: Refer to Canadian Electrical Code, CSA
C22.1 Part 1 - latest revision.
®
The ROBERTS GORDON System Control is an
electronic controller designed for the control of
®
®
CORAYVAC and VANTAGE NP (multiburner only)
1.4 Check Installation Materials
systems.
Before proceeding with the installation of the
ROBERTS GORDON System Control, check the fol-
lowing points:
The System Control is capable of giving four zones of
burners' temperature control and power. The control
will also give power output to as many as two pumps,
provided that the load is not greater than 20 A and 1
Ø. For additional electrical specifications see Page 3,
Section 2.2.
®
1.4.1 Thermostats
Electronic 24 Vac thermostats and mechanical ther-
mostats with heat anticipator can be used. The sys-
tem control offers a 24 Vac power supply to power
electronic thermostats.
Roberts-Gordon offers a selection of low voltage
thermostats approved for use with the system con-
trol.
The thermostats measure the air temperature in the
building. It is important that the thermostat is located
in an area within the heated zone at occupant level.
Do not place thermostat in an area shaded from the
low-intensity, infrared heating system.
1
SYSTEM CONTROL INSTALLATION, OPERATION AND SERVICE MANUAL
1.4.2 Electrical Installation Materials
120 V, 60 Hz, 1 Ø, 20 A, power supply to the control
panel must be installed in accordance with the most
®
current National Electrical Code , local codes and
any site specific diagrams.
Total load powered by the panel must not exceed
20 A. Loads totaling more than 20 A must be
powered from an additional power supply circuit by
the use of a load relay package.
1.4.3 Outside Air Supply Blower
If used, the optional outside air blower is to be con-
trolled in parallel with the pump. The blower incorpo-
rates a pressure switch which must be wired in series
with the pressure switch on the pump. The load relay
package may be required with the blower. See Page
10, Figure 8 for wiring detail.
1.4.4 Pressure Switch
A pressure switch (P/N 90430600K), is required for
installation on the inlet of the pump. This switch is
required to interlock the operation of the pump with
the control panel.
CAUTION
Product Damage Hazard
Pressure switch must be installed on all
ROBERTS GORDON® systems to ensure
safety and operation.
System will not operate without pressure
switch.
Failure to follow these instructions can result
in product damage.
2
SECTION2:SPECIFICATIONS
SECTION 2: SPECIFICATIONS
FIGURE 1: Panel Layout
2.1 Material Specifications
Enclosure Material: Metal
Weight: 6.8 lbs
2.2 Electrical Specifications
Supply: 120 V, 60 Hz, 1 Ø, 20 A
Zone Relay: Single pole 20 A, 120 Vac
(resistive)
Dimensions: 10.2" x 11.4" x 2.8"
(25.4 x 29.0 x 7.1 cm)
Pump Relay: Single pole 20 A, 120 Vac
(resistive) 1 HP motor rated.
Protection: Rating IP20
Thermostats: Low voltage 24 Vac
2.3 Pump Specifications
Full Load Current
Pump Model
EP-100
HP
1/3
3/4
3/4
2
120 V 1 Ø
208/230 V 1 Ø
208/230 V 3 Ø
460 V 3 Ø
4.8 A
6.6 A
-
N/A / 2.4 A
-
-
EP-201
N/A / 3.3 A
-
-
EP-203
-
2.4 A / 2.2 A
-
1.1 A
-
EP-301
23 A
-
12.8 A / 11.9 A
-
EP-303
2
5.5 A / 5.2 A
2.6 A
3
SYSTEM CONTROL INSTALLATION, OPERATION AND SERVICE MANUAL
2.4 Burner Electrical Ratings
®
CORAYVAC burners: 120 V, 60 Hz, 1 Ø 0.3 A
®
VANTAGE NP (multiburner only) burners:120 V, 60
Hz, 1 Ø 0.2 A
2.5 Outside Air Supply Blower Electrical Ratings
Outside air supply blower (P/N 90707501) has a full
load rating of 1.6 A when supplied by a 120 V, 60 Hz, 1
Ø power source.
2.6 Indicator Lights
See Page 3, Figure 1.
1. LINE POWER, when lit, indicates power is
supplied to the panel.
2. PUMP POWER 1, when, lit, indicates the relay
for power to pump 1 is energized.
3. PUMP POWER 2, when, lit, indicates the relay
for power to pump 2 is energized.
4. PRESSURE SWITCH 1, when lit, indicates that
pressure switch 1 is closed. When blinking, indi-
cates that the system is in lockout.
5. PRESSURE SWITCH 2, when lit, indicates that
pressure switch 2 is closed. When blinking, indi-
cates that the system is in lockout.
6. ZONE, when lit, indicates which zone relay is
energized.
2.7 Terminal Block Guide
Figure 2 is a guide to the terminal abbreviations.
FIGURE 2: Terminal Block Guide
POWER
PUMP 1
ZONE 1
ZONE 2
ZONE 3
ZONE 4
PUMP 2
BURNERS BURNERS BURNERS BURNERS
SUPPLY
G
N
L
N
L
N
L
N
L
N
L
N
L
N
L
4
SECTION3:INSTALLATION
SECTION 3: INSTALLATION
3.2.6 When the case is rotated 180°, the LED status
circuit card needs to be rotated so that the LED's
match the upright cover panel. Remove the LED sta-
tus circuit card by squeezing each standoff gently
with pliers one at a time until it is loose. Rotate the
circuit card so that it will line up with the upright cover
and re-attach to the standoffs. The ribbon cable that
connects the LED status circuit card to the circuit
card assembly will have a twist in it. Use caution not
to cause any creases or put any tension to the ribbon
cable when rotating the circuit card.
DANGER
Electrical Shock Hazard
Disconnect electric before service or
maintenance.
FIGURE 3: Mounting Hole Layout
Control must be connected to a properly
grounded electrical source.
4 x Ø 0.360" (9 mm)
Failure to follow these instructions can
result in death or electrical shock.
Installation of the System Control and the associated
external electrical wiring must be completed by an
electrician qualified in the installation of control
systems for heating equipment.
4.5" (114 mm)
3.1 Preparation
Before installing the System Control, observe the
following:
3.1.1 Ensure that you have a copy of the site layout
for the project that identifies clearly the separate
zones.
10.0" (254 mm)
3.1.2 Read Page 1, Section 1.4 carefully to ensure
the correct installation materials are available.
3.3 Select the External Wiring Diagram for the
Installation
3.2 Installing the System Control Panel
3.3.1 Use Page 7, Section 4 for the external wiring of
3.2.1 Choose a mounting location for the System
Control. It is advisable to choose a visible location
near the pump.
the burners, thermostats and pressure switch.
3.3.2 Use the table below to select the correct pump
external wiring diagram.
Do not mount System Control outdoors or in an
area with moisture spray, excessive moisture or
humidity. To avoid damage from possible drips,
do not mount controller directly beneath pump.
Pump
EP-100
EP-100
EP-201
EP-201
EP-301
Supply Voltage
120 V 1 Ø
208/230 V 1 Ø
120 V 1 Ø
208/230 V 1 Ø
120/208 - 230 V 1 Ø
Page Section Figure
7
8
7
8
8
9
9
4
4
4
4
4
4
4
5
6
5
6
6
7
7
3.2.2 Remove the cover of the System Control by
removing the four securing screws.
3.2.3 Place the cover and the hardware in a safe
place for refitting after the external wiring connections
have been made.
EP-203 208 - 230 V (or 460 V) 3 Ø
EP-303 208 - 230 V (or 460 V) 3 Ø
3.2.4 Position the mounting hole location of the Sys-
tem Control per Figure 3.
Roberts-Gordon LLC provides, at an additional
cost, the following IEC contactor packages required
for EP-100 and EP-201 208/230 V (1 Ø), EP-203 (3
Ø), EP-303 (3 Ø) and EP-301 (1 Ø) pumps.
3.2.5 Remove the knockouts required for the conduit
entry into the System Control panel. The knockouts
are on the top of the system control case. If the
knockouts are required to be on the bottom the case
can be rotated 180°.
5
SYSTEM CONTROL INSTALLATION, OPERATION AND SERVICE MANUAL
For the EP-203 (3 Ø), EP-303 (3 Ø), EP-100, EP-201 3.4 System Configuration
and EP-301 208/230 V (1 Ø) pumps, use the 17 Amp
contactor package (P/N 10050011).
See Page 6, Figure 4 for details. Below the ribbon
cable J2 connector, there are six configurable jump-
ers. They indicate whether the thermostat for each
zone uses an anticipator. If the thermostat for that
associated zone has an anticipator, then use a
jumper to cover both pins for that zone. If the thermo-
stat for the associated zone does not use an antici-
pator, then cover the right side pin only.
For the EP-301 pumps that are operated with 120 V
(1 Ø) use the 28 Amp contactor package (P/N
10050012). The contents are listed below:
Contactor Packages
The bottom two jumpers are associated with Pump 2
operation. They indicate whether Pump 2 is active
and which zones are associated with it. Pump 2 can
only be associated with Zone 3 and/or Zone 4. To
enable Pump 2, use a jumper to cover both pins for
the zone(s) that will operate on Pump 2. To disable
Pump 2, cover only the right side of the pin of zone 3
and 4.
Part No. Description
10050011 Contactor Package 17A
10001002
90600200
Enclosure IEC metal 8X6X6 NEMA 1
CONT 208-600 17A (A16-30-10-84)
10050012 Contactor Package 28A
10001002
90600205
Enclosure IEC metal 8X6X6 NEMA 1
CONT 208-600 28A (A26-30-10-84)
All pump motors are equipped with thermal
overloads.
3.3.3 If an outside air blower is to be used with any of
the above options, See Page 10, Figure 8.
FIGURE 4: System Configuration
AC POWER IN
PUMP 1
ZONE 1
ZONE 2
ZONE 3
ZONE 4 PUMP 2
G
N
L
N
L
N
L
N
L
N
L
N
L
N
L
ANTICIPATOR
LOAD ENABLE
FEATURE
ENABLED
ZONE 1
ZONE 2
ZONE 3
ZONE 4
ZONE 3
ZONE 4
FEATURE
DISABLED
ANTICIPATOR
LOAD ENABLE
ZONE
ZONE
ZONE
ZONE
ZONE
ZONE
1
2
3
4
3
4
PUMP 2
OPERATION
ENABLE
PUMP
OPERATION
ENABLE
2
6
SECTION 4: TYPICAL EXTERNAL WIRING DIAGRAMS
SECTION 4: TYPICAL EXTERNAL WIRING
DIAGRAMS
4.1 EP-100 or EP-201 120 V 1 Ø Pump External
Wiring Diagram
The external wiring diagram above shows the con-
DANGER
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
below shows connection to an EP-100 or EP-201 120
V 1 Ø pump.
Electrical Shock Hazard
Disconnect electric before service or
maintenance.
4.1.1 External Wiring Connection Details
More than one disconnect switch may be
required to disconnect electric to the unit.
The cable used for all the wiring must be rated for
line voltage up to 600 Vac.
Failure to follow these instructions can result
in death or electrical shock.
The low voltage circuit conforms with Class 2 separa-
tion of circuit requirements. National Electrical Codes
®
for wiring class 2 low voltage circuits must be followed.
®
FIGURE 5: External Wiring Diagram ROBERTS GORDON EP-100 and EP-201 120 V 1 Ø Pump
EP-100 or
EP-201 Pump
EP-100 or
EP-201 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.
All burners must be
connected to Ground
(Not shown)
Zone 1 Zone 2 Zone 3 Zone 4
Low voltage thermostats
located in heated zone
Pressure
Pressure
switch
located at
Pump 2
switch
Zone
4
Zone Zone Zone
located at
Pump 1
1
2
3
120 V
1 Ø
120 V
1 Ø
60 Hz
60 Hz
24 VAC
L
N
Ground
24 VAC PS 1
COM
R
R
R
R
PS 2
N L
N L
N L
N L
N L
N L
Z3
Z4
Z1
Z2
POWER
SUPPLY
PUMP 1
PUMP 2
24 VAC PS 1
COM
W
W
W
W
PS 2
System Control
7
SYSTEM CONTROL INSTALLATION, OPERATION AND SERVICE MANUAL
®
FIGURE 6: External Wiring Diagram ROBERTS GORDON EP-100, EP-201 or EP-301, 230 V 1 Ø Pump
CAUTION
EP-100, EP-201 or
EP-301 Pump
Product Damage Hazard
Motor Contactors
Do not directly connect control relay terminals
P/N 10050011
to pump motor
P/N 10050012
.
Failure to follow these instructions can result
in product damage.
6
5
4
3
2
1
The power supply for the
pump must be separate
M
from the controller supply
208 - 230 V
Individual supply for
pump rated for total full
load current. See Section
2.3 for details.
L1
L2
1 Ø
60 Hz
EP-100,
EP-201 or
EP-301 Pump
TWO PUMP SYSTEM (optional)
All burners must be
connected to Ground
(Not shown)
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.
Zone 1 Zone 2 Zone 3 Zone 4
Low voltage thermostats
located in heated zone
Pressure
switch
located at
pump 1
Pressure
switch
located at
pump 2
Zone
4
Zone Zone Zone
1
2
3
120 V
1 Ø
60 Hz
120 V
1 Ø
60 Hz
24 VAC
L
N
Ground
24 VAC PS 1
COM
R
R
R
R
PS 2
N L
N L
N L
N L
N L
N L
Z3
Z4
Z1
Z2
PUMP 1
PUMP 2
POWER
SUPPLY
24 VAC PS 1
COM
W
W
W
W
PS 2
System Control
4.2 EP-201 or EP-301 230 V 1 Ø External Wiring
Diagram
pump.
4.2.1 External Wiring Connection Details
The external wiring diagram above shows the
The cable used for all the wiring must be rated for
line voltage up to 600 Vac.
connections for four zones of system burners.
®
System burners can be either CORAYVAC or VAN-
The low voltage circuit conforms with Class 2 separa-
tion of circuit requirements. National Electrical Codes
for wiring class 2 low voltage circuits must be followed.
®
TAGE 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 301 or EP-201 1 Ø
8
SECTION 4: TYPICAL EXTERNAL WIRING DIAGRAMS
®
FIGURE 7: External Wiring Diagram ROBERTS GORDON EP-203 or EP-303, 208 - 230 V (or 460 V)
3 Ø Pump
CAUTION
Product Damage Hazard
Do not directly connect control relay terminals
EP-203 or
EP- 303 3 Ø Pump
to pump motor
.
Motor Contactors
P/N 10050011
P/N 10050012
Failure to follow these instructions can result
in product damage.
The power supply for the
pump must be separate
from the controller supply
208 - 230 V
(or 460 V)
3 Ø
M
60 Hz
Individual supply
L3
L2
L1
for pump rated for
total full load current.
See Section 2.3
for details.
All burners must be
connected to Ground
(Not shown)
EP-203 or
EP-303 3 Ø
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.
Zone 1 Zone 2 Zone 3 Zone 4
Low voltage thermostats
located in heated zone
Pressure
Pressure
switch
switch
Zone
4
Zone Zone Zone
located at
pump 1
located at
pump 2
1
2
3
120 V
1 Ø
60 Hz
120 V
1 Ø
60 Hz
24 VAC
L
N
Ground
24 VAC PS 1
COM
R
R
R
R
PS 2
N L
N L
N L
N L
N L
N L
Z3
Z4
Z1
Z2
PUMP 1
PUMP 2
POWER
SUPPLY
24 VAC PS 1
COM
W
W
W
W
PS 2
System Control
4.3 EP-203 or EP-303 208 - 230 V (or 460 V) 3 Ø
above shows connection to an EP-203 or EP-303 3 Ø
Pump External Wiring Diagram
pump.
4.3.1 External Wiring Connection Details
The external wiring diagram above shows the
connections for four zones of system burners.
The cable used for all the wiring must be rated for
line voltage up to 600 Vac.
®
System burners can be either CORAYVAC or
®
VANTAGE NP (multiburner only).
The low voltage circuit conforms with Class 2 separa-
tion of circuit requirements. National Electrical Codes
for wiring class 2 low voltage circuits must be followed.
®
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
9
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
Optional power supply for Outside Air Blower
Typical wiring for Load Relay
Package (P/N 05023000)
Coil connections
Live out to the
to Pump L & N
outside air
Outputs from
Control Panel
blower
Outside Air
Blower
Live in
Outside Air
Pump
Blower
Relay Receptacle
Back Plate
120 V
CR
1 Ø
L
N
60 Hz
TWO PUMP SYSTEM (optional)
Pump 1 may be used for all zones.
Pump
Pump 2 may be used to control zone 3
and/or zone 4. Refer to Pump 1 for configuration.
Pressure switch
located at pump 2
Pressure switch located
at outside air blower
All burners must be
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
4
Zone Zone Zone
1
2
3
120 V
1 Ø
60 Hz
120 V
1 Ø
60 Hz
24 VAC
L
N
Ground
24 VAC PS 1
COM
R
R
R
R
PS 2
N L
N L
N L
N L
N L
PUMP 2
N L
Z3
Z4
Z1
Z2
PUMP 1
POWER
SUPPLY
24 VAC PS 1
COM
W
W
W
W
PS 2
System Control
4.4 Outside Air Blower External Wiring Diagram
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
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).
10
SECTION 4: TYPICAL EXTERNAL WIRING DIAGRAMS
load relay to the optional outside air blower.
4.4.1 External Wiring Connection Details
The cable used for all the wiring must be rated for
line voltage up to 600 V.
The low voltage circuit conforms with Class 2
separation of circuit requirements. National Electrical
®
Codes for wiring class 2 low voltage circuits
must be followed.
11
SYSTEM CONTROL INSTALLATION, OPERATION AND SERVICE MANUAL
SECTION 5: TROUBLESHOOTING
tinuous operation, the system control will shut
off and re-start to verify no faults exist in the
system.
DANGER
e. After the heating is turned off, the pump will
continue operation for 2 minutes, post purge.
Electrical Shock Hazard
Disconnect electric before service or
maintenance.
More than one disconnect switch may be
required to disconnect electric to the unit.
Failure to follow these instructions can result
in death or electrical shock.
WARNING
Explosion Hazard
Turn off gas supply to equipment before
service or maintenance.
Failure to follow these instructions can result
in death, injury or property damage.
5.1 Sequence of Operation
a. On demand for heat from the thermostat, the
panel will send power to the pump. The pump
will begin operation.
b. Once vacuum is established, the pressure
switch at the pump will close. If the vacuum is
not established within 30 seconds the pump
will go into lockout (pump LED is flashing).
After one hour of lockout, the system will re-
start.
c. The System Control panel sends power to the
burners. The burners will go through a 45
second purge and cycle time.
d. Once flame is established, the heater will
remain in operation until such time as either
the heating is turned off by the thermostat,
lockout conditions occur, or after 24 hours of
continuous operation. After 24 hours of con-
12
SECTION5:TROUBLESHOOTING
FIGURE 9: System Control Troubleshooting Chart
If control is not working properly, disconnect power to control and check for signs
of physical damage to the front and back of the circuit board, water damage (cor-
rosion) or scorching. If damage is found, identify and rectify source of
damage. Replace circuit board (P/N 10090101), if it has permanent damage.
Contact
Roberts-Gordon LLC
Check the power supply
to the system control
panel. Is it on?
Is the line power
indicator on?
Check the 250mA
fuse. Is it OK?
No
Yes
Yes
No
No
Replace fuse with
P/N 10000212.
Rectify power supply
problem.
Yes
Refer to burner trouble-
shooting in either the
CORAYVAC® or
Is the correct contactor
selected for the
pump?
Adjust thermostat set
point to call for heat.
Does the pump
come on?
Is external wiring to the
pump OK?
Yes
No
Yes
VANTAGE® NP
Installation, Operation and
Service Manuals.
No
No
Rectify.
Fit the correct contactor.
Yes
Is the thermostat connected
to the correct terminal at the
system control.
Does the zone light
come on?
Does the pressure switch
light come on?
No
Rectify.
Yes
No
Yes
No
Refer to burner trouble-
shooting in either the
CORAYVAC® or
Contact
Roberts-Gordon LLC
Is external wiring to the
pressure switch OK?
Yes
VANTAGE® NP
Installation, Operation and
Service Manuals.
No
Rectify.
Yes
Do the incorrect zone
lights or all zone
lights come on?
Are the zone thermostats
wired correctly?
Turn off power and correct
wiring.
No
Yes
Yes
Contact
Roberts-Gordon LLC
No
Refer to the burner start up
instructions in either the CORAYVAC®
or VANTAGE® NP Installation, Operation
and Service Manuals.
Is external wiring to the
zone OK?
Do the burners in the
zone come on?
Has the system been
commissioned?
Yes
No
No
Yes
No
Refer to burner trouble-
shooting in either the
CORAYVAC® or
Rectify.
VANTAGE® NP
Installation, Operation and
Service Manuals.
Yes
Contact
Roberts-Gordon LLC
Do the burners turn off
when the thermostat is
satisfied?
No
Yes
Contact
Roberts-Gordon LLC
Does the pump turn off
following post purge period?
No
Yes
Troubleshoot ends.
Contact
Roberts-Gordon LLC
13
SYSTEM CONTROL INSTALLATION, OPERATION AND SERVICE MANUAL
SECTION 6: REPLACEMENT PARTS
WARNING
DANGER
Electrical Shock Hazard
Explosion Hazard
Carbon Monoxide Hazard
Fire Hazard
Use only genuine ROBERTS GORDON® replacement parts per this installation, operation and
service manual.
Failure to follow these instructions can result in death, electric shock, injury or property damage.
FIGURE 10: System Control Internal Components Diagram
AC POWER IN
PUMP 1
ZONE 1
ZONE 2
ZONE 3
ZONE 4 PUMP 2
G
N
L
N
L
N
L
N
L
N
L
N
L
N
L
1
2
4
Item
Description
Fuse 250 mA
Transformer
Board Assembly
Part Number
10000212
N/A
1
2
4
10090101
14
SECTION6: REPLACEMENT PARTS
6.1 Replacement Parts Instructions
See Page 14, Figure 10, Item 2.
6.1.3 Microprocessor Programing
DANGER
The microprocessor may be re-programed by a
reprograming device.
Should the microprocessor program become suspect
during troubleshooting, consult Roberts-Gordon LLC.
Electrical Shock Hazard
Disconnect electric before service or
maintenance.
More than one disconnect switch may be
required to disconnect electric to the unit.
Failure to follow these instructions can result
in death or electrical shock.
WARNING
Explosion Hazard
Turn off gas supply to equipment before
service or maintenance.
Failure to follow these instructions can result
in death, injury or property damage.
6.1.1 Fuse 250 mA
See Page 14, Figure 10, Item 1.
This time delay fuse protects the System Control
from power surges, lightning and incorrect wiring.
If the fuse needs replacing, the following steps must
be taken.
Disconnect power to the System Control.
Remove the screws from the cover and remove the
cover of the System Control. See Page 5, Section
3.2.2 for details.
Locate the fuse, and remove the fuse with a fuse pull-
ing tool. See Page 14, Figure 10, Item 1.
Replace with a new fuse rated at 250 mA slow blow.
6.1.2 Transformer
The transformer on the board cannot be replaced.
15
SYSTEM CONTROL INSTALLATION, OPERATION AND SERVICE MANUAL
16
®
SECTION 7: THE ROBERTS GORDON SYSTEM CONTROL WARRANTY
®
Roberts-Gordon LLC is not permitted to inspect the
damaged controller and/or component parts.
SECTION 7: THE ROBERTS GORDON SYSTEM
CONTROL WARRANTY
ROBERTS-GORDON LLC WILL PAY FOR:
READ YOUR INSTALLATION, OPERATION AND
SERVICE MANUAL.
If you have questions about your control, contact your
installing professional. Should you need Replacement
Parts or have additional questions, call or write:
Within 24 months from date of purchase by buyer or 27
months from date of shipment by Roberts-Gordon LLC
(whichever occurs first), replacement parts will be
provided free of charge for any part of the product which
fails due to a manufacturing or material defect.
Roberts-Gordon LLC will require the part in question to be
returned to the factory. Roberts-Gordon LLC will, at its sole
discretion, repair or replace after determining the nature of
the defect and disposition of part in question.
ROBERTS GORDON® Replacement Parts are warranted
for a period of 12 months from date of shipment from
Roberts-Gordon LLC or the remaining ROBERTS
GORDON® System Control warranty.
Roberts-Gordon LLC
1250 William Street
P. O. B ox 4 4
Buffalo, New York 14240-0044
716.852.4400
On the web at: www.rg-inc.com
ROBERTS-GORDON WILL NOT PAY FOR:
Service trips, service calls and labor charges.
Shipment of replacement parts.
Claims where the total price of the goods have not
been paid.
Damage due to:
• Improper installation, operation or maintenance.
• Misuse, abuse, neglect, or modification of the
ROBERTS GORDON® System Control in any way.
• Use of the ROBERTS GORDON® System Control for
other than its intended purpose.
Roberts-Gordon LLC's liability, and your exclusive
remedy, under this warranty or any implied warranty
(including the implied warranties of merchantability
and fitness for a particular purpose) is limited to
providing replacement parts during the term of this
warranty. Some jurisdictions do not allow limitations on
how long an implied warranty lasts, so this limitation may
not apply to you. There are no rights, warranties or
conditions, expressed or implied, statutory or otherwise,
other than those contained in this warranty.
Roberts-Gordon LLC shall in no event be responsible
for incidental or consequential damages or incur
liability for damages in excess of the amount paid by
• Incorrect gas or electrical supply, accident, fire, floods,
acts of God, war, terrorism, or other casualty.
• Improper service, use of replacement parts or acces-
sories not specified by Roberts-Gordon LLC.
• Failure to install or maintain the ROBERTS GORDON®
System Control as directed in the Installation, Opera-
tion and Service Manual.
®
you for the ROBERTS GORDON System Control.
Some jurisdictions do not allow the exclusion or limitation
of incidental or consequential damages, so this limitation
or exclusion may not apply to you. This warranty gives you
specific legal rights, and you may also have other rights
which vary from jurisdiction to jurisdiction.
• Relocation of the ROBERTS GORDON® System Con-
trol after initial installation
• The use of the ROBERTS GORDON® System Control
in a corrosive atmosphere containing contaminants.
• The use of the ROBERTS GORDON® System Control
in the vicinity of a combustible or explosive material.
Roberts-Gordon LLC shall not be responsible for failure to
perform under the terms of this warranty if caused by
circumstances out of its control, including but not limited to
war, fire, flood, strike, government or court orders, acts of
God, terrorism, unavailability of supplies, parts or power.
No person is authorized to assume for Roberts-Gordon
LLC any other warranty, obligation or liability.
®
• Any defect in the ROBERTS GORDON System Con-
trol arising from a drawing, design, or specification
supplied by or on behalf of the consumer.
• Damage incurred during shipment. Claim must be filed
with carrier.
LIMITATIONS ON AUTHORITY OF
REPRESENTATIVES:
No representative of Roberts-Gordon LLC, other than an
Executive Officer, has authority to change or extend these
provisions. Changes or extensions shall be binding only if
confirmed in writing by Roberts-Gordon LLC's duly autho-
rized Executive Officer.
WARRANTY IS VOID IF:
The ROBERTS GORDON® System Control is not installed
by an electrician qualified in the installation and service of
control systems for heating equipment.
You cannot prove original purchase date and required
annual maintenance history.
The data plate and/or serial number are removed,
defaced, modified or altered in any way.
The ownership of the ROBERTS GORDON® System
Control is moved or transferred. This warranty is
nontransferable.
17
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