Page 1
WARNING
Installation must be done by a contractor qualified
in the installation and service of gas-fired heating
equipment or your gas supplier.
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.
EP-300 Series
Installation,
Operation &
Service Manual
© 2018 Roberts-Gordon LLC
Installer
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.
Owner
Keep this manual in a safe place in order to provide
your service technician with necessary information.
Roberts-Gordon LLC
1250 William Street
P. O . B o x 4 4
Buffalo, New York 14240-0044
Telephone: +1.716.852.4400
Fax: +1.716.852.0854
Toll Free: 800.828.7450
www.robertsgordon.com
P/N 127202NA Rev. N 3/18
Page 2
Page 3
© 2018
Roberts-Gordon LLC
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.
TABLE OF CONTENTS
SECTION 1: Heating System Safety ............................1
1.1 Manpower Requirements ....................................1
1.2 Safety Labels and Their Placement ....................1
1.3 California Proposition 65 .....................................1
SECTION 2: Installer Responsibility............................3
2.1 Corrosive Chemicals...........................................3
2.2 National Standards and Applicable Codes .........3
SECTION 3: Unpacking the Pump ...............................4
3.1 Open Shipping Cartons ......................................4
SECTION 4: Major Components ..................................5
4.1 Standard Parts List .............................................6
SECTION 5: Pump Installation ...................................10
5.1 Pump Assembly Instructions ............................10
5.2 Pump Impeller Rotation ....................................12
SECTION 6: Pressure Switch Mounting
and Wiring...............................................14
6.1 Pressure Switch Installation..............................14
SECTION 7: Pump Mounting Instructions ................15
7. 1 M o unting Platform .............................................15
SECTION 8: Motor Wiring ...........................................16
8.1 Impeller Rotation Direction ...............................16
8.2 EP-301 Wiring...................................................16
8.3 EP-303 Wiring...................................................17
SECTION 9: Venting....................................................19
9.1 General Venting Requirements.........................19
9.2 Venting the Pump .............................................19
9.3 Vent Material Recommendations ......................19
9.4 Horizontal Venting.............................................19
9.5 Vertical Venting.................................................20
9.6 Venting Accessories .........................................20
9.7 Condensate Tee Assembly ...............................21
9.8 Condensate Trap and Condensate Tee ............23
SECTION 10: Servicing Instructions .........................25
10.1 Pre-Season Maintenance and Annual
Inspection .....................................................25
10.2 To Change the Motor and/or the Impeller .......25
10.3 Maintenance Checklist....................................27
SECTION 11: Replacement Parts and Accessories .28
11.1 Replacement Parts ..........................................28
11.2 Accessories .....................................................29
SECTION 12: Specifications.......................................30
12.1 Material Specifications ....................................30
12.2 EP-301 Controls Specifications .......................30
12.3 EP-303 Controls Specifications ...................... 30
12.4 General Dimension Specifications ................. 30
12.5 Pump Specifications....................................... 30
SECTION 13: The ROBERTS GORDON
Series Pump Warranty ....................... 31
®
EP-300
Prin ted in U.S.A.
Page 4
Page 5
TABLE OF FIGURES
Figure 1: Label Placement ..............................................2
Figure 2: Major Component Descriptions ........................5
Figure 3: Pump Discharge Orientation..........................11
Figure 4: Pump Assembly .............................................12
Figure 5: Pump Impeller Rotation..................................12
Figure 6: Pump Inlet Side 4" .........................................13
Figure 7: Pump Inlet Side 6" .........................................13
Figure 8: Pump Discharge Side ....................................13
Figure 9: Pressure Switch Mounting Holes ...................14
Figure 10: Mounted Pressure Switch ............................14
Figure 11: Pump Pressure Switch Wiring....................... 14
Figure 12: Wall Bracket Assembly.................................15
Figure 13: Mounting Platform Options...........................15
Figure 14: EP-301 Contactor Wiring Diagram...............16
Figure 15: Motor Wiring for EP-301 Pump
(Clockwise Impeller Rotation).......................17
Figure 16: EP-303 208 V - 230 V (or 460 V) 3 Ø Pump
Starter Wiring Diagram ..................................17
Figure 17: Motor Wiring for EP-303
(208 V - 230 V/460 V) 3 Ø Pump ................. 18
Figure 18: Horizontal Venting ........................................20
Figure 19: Vertical Venting ............................................21
Fig
ure 20: Condensate Tee Assembly at Pump Inlet ....22
Figure 21: Condensate Drain for Vertical Venting .........22
Figure 22: Condensate Tee - Discharge Side ...............23
Figure 23: Condensate Neutralization Tube ..................24
LIST OF TABLES
Table 1: EP-301 Pump Package 4" (P/N 02723014)......6
Table 2: EP-301 Pump Package 6" (P/N 02723016)......7
Table 3: EP-303 Pump Package 4" (P/N 02723034)......8
Table 4: EP-303 Pump Package 6" (P/N 02723036)......9
Page 6
Page 7
SECTION 1: HEATING SYSTE M SAFETY
SECTION 1: HEATING SYSTEM SAFETY
Yo ur Safety is Important to Us!
This 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 in these
sections.
Installation, service and annual inspection of heater
and pump must be done by a contractor qualified in
the installation and service of gas-fired heating
equipment.
Read this manual carefully before installation,
operation or service of this equipment.
CTHN multiburner and CRVB systems are designed
for heating nonresidential indoor spaces. Model
CRVSF is for nonresidential indoor spaces where
exposed surfaces of heating equipment cannot
exceed temperatures of 750 °F (399 °C) in facilities
where compressed natural gas (CNG) or liquid
natural gas (LNG) are present. Do not install in
residential spaces. These instructions, the layout
drawing, local codes and ordinances, and applicable
standards that apply to electrical wiring, venting, etc.
must be thoroughly
understood before proceeding
with the installation.
Protective gear is to be worn during installation,
operation and service in accordance to the
Occupational Safety and Hazard Administration
(OSHA). Gear must be in accordance to NFPA 70E,
latest revision when working with electrical
components. Thin sheet metal parts, such as various
venting components, have sharp edges. To prevent
injury, the use of work gloves is recommended.
Do not attempt to operate the pump until all steps of
the installation have been accomplished.
This pump must be applied and operated under the
general concepts of reasonable use and installed
using best building practices.
This equipment is not intended for use by persons
(including children) with reduced physical, sensory or
mental capabilities, or lack of experience and knowl-
edge, unless they have been given supervision or
instru
ction concerning use of the appliance by a person responsible for their safety. Children should be
supervised to ensure that they do not play with the
equipment.
1.1 Manpower Requirements
To p r event personal injury and damage to the pump,
two persons will be required for installation.
1.2 Safety Labels and Their Placement
Product safety signs or labels should be replaced by
the product user when they are no longer legible.
Please contact Roberts-Gordon LLC or your
ROBERTS GORDON
®
independent distributor to
obtain replacement signs or labels. See Page 2,
Figure 1.
1.3 California Proposition 65
In accordance with California Proposition 65 require-
ments, a warning label must be placed in a highly
visible location on the outside of the equipment (i.e.,
near equipment’s serial plate). See the heaters’
Installation, Operation and Service Manual for label
placement. Avoid placing label on areas with extreme
heat, cold, corrosive chemicals or other elements. To
order additional labels, please contact Roberts-Gordon LLC or your ROBERTS GORDON
®
independent
distributor.
For additional copies of the Installation, Operation
and Service Manual, please contact Roberts-Gordon
LLC.
1 of 31
Page 8
EP-300 SERIES PUMP INSTALLATION, OPERATION AND SERVICE MANUAL
Description Part Number
Severe Injury Label 91012100
Rating Plate Label 91010401
Logo Label 91017200
FIGURE 1: Label Placement
2 of 31
Page 9
SECTION 2: INSTALLER R ESPONSIBILITY
CAUTION
Product Damage Hazard
Do not use heater in area containing
corrosive chemicals.
Refer to appropriate Material Safety Data
Sheets (MSDS).
Failure to follow these instructions can result
in product damage.
SECTION 2: INSTALLER RESPONSIBILITY
The installer is responsible for the following:
• To install the pump and electrical supplies, in
accordance with applicable specifications and
codes. Roberts-Gordon LLC recommends the
installer contact a local building inspector or fire
marshal for guidance.
• To use the information given in a layout drawing
and in the manual together with the cited codes
and regulations to perform the installation.
• To install the heater in accordance with the
clearances to combustibles.
• To furnish all needed materials not furnished as
standard equipment.
• To plan location of supports.
• To provide access to pump for servicing on all
sides and for pump removal.
• To provide the owner with a copy of this installation, operation and service manual.
• To never use pump or pump platform as support
for ladder or other access equipment and never
hang or suspend anything from pump or pump
platform.
• To safely and adequately install pump using
materials with a minimal working load of 750 lb
(340 kg).
• To ensure the pump is placed in an approved
application.
• For CRVSF-Series only: To install system with a
minimum of 18" (45 cm) ceiling clearance in
accordance to National Fire Protection Association (NFPA) 30A (2012 edition).
2.1 Corrosive Chemicals
Roberts-Gordon LLC cannot be responsible for
ensuring that all appropriate safety measures are
undertaken prior to installation; this is entirely the
responsibility of the installer. It is essential that the
contractor, the sub-contractor, or the owner identifies
the presence of combustible materials, corrosive
chemicals or halogenated hydrocarbons* anywhere
in the premises.
* Halogenated Hydrocarbons are a family of chemical compounds characterized by the presence of halogen elements (fluorine, chlorine, bromine, etc.). These compounds are
frequently used in refrigerants, cleaning agents, solvents, etc. If
these compounds enter the air supply of the burner, the life span
of the heater components will be greatly reduced. An outside air
supply must be provided to the burners whenever the presence
of these compounds is suspected. Warranty will be invalid if the
heater is exposed to halogenated hydrocarbons.
2.2 National Standards and Applicable Codes
All Appliances must be installed in accordance with
the latest revision of the applicable standards and
national codes. This refers also to the electric, gas
and venting installation. Note: Additional standards
for installations in Public Garages, Aircraft Hangars,
etc. may be applicable.
3 of 31
Page 10
EP-300 SERIES PUMP INSTALLATION, OPERATION AND SERVICE MANUAL
WARNING
Cut/Pinch Hazard
Wear protective gear during installation,
operation and service.
Edges are sharp.
Failure to follow these instructions can result
in injury.
SECTION 3: UNPACKING THE PUMP
3.1 Open Shipping Cartons
Open cartons and remove packing inserts. Carefully
remove pump components from the cartons. Lift
assembly by gripping metal pump frame. Two people
are required (weight 135 lbs, 61 kg). This pump has
been tested prior to packing. The impeller was
dynamically balanced before assembly and requires
care in handling to avoid damage.
4 of 31
Page 11
SECTION 4: MAJOR COMPONENTS
EP-301 Pump Assembly - 02730101
EP-303 Pump Assembly - 02730103
Pump Scroll Assembly - 90713451
Band Clamp 4" (10 cm) - 91901300
Band Clamp 6" (15 cm) - 91913703
Adapter 4" to 6" (10 cm x 15 cm) - 02719903
Bird Screen 6" (15 cm) - 01397400
Mounting Angle - 01365000
Flexible Boot 4.5" (11 cm) - 91412801
Flexible Boot 6" (15 cm) - 91412802
Silicone Rubber Ring - 91906900
Pump Inlet Assembly - 90713454
Pressure Switch - 90430600K
FIGURE 2: Major Component Descriptions
SECTION 4: MAJOR COMPONENTS
5 of 31
Page 12
EP-300 SERIES PUMP INSTALLATION, OPERATION AND SERVICE MANUAL
4.1 Standard Parts List
Table 1: EP-301 Pump Package 4" (P/N 02723014)
Part No. Description Quantity
Box 1 of 2
02730101 EP-301 Pump Assembly Includes: 1
90713454 Pump Inlet Assembly, 455 mm dia 1
90713451 Pump Scroll Assembly, 529 mm dia 1
01312105 EP-300 Scroll/Inlet Fastener Package 1
127202NA EP-300 Series Installation, Operation and Service Manual 1
127102NA
CORAYVAC
Box 2 of 2
02730104 EP-300 Accessory Package 4" Includes: 1
02719903 4" to 6" Adapter 1
91412802 Pump Boot (6" x 10") 1
91412801 4.5" Flexible Boot 1
91906900 Silicone Rubber Ring 2
91901300 Band Clamp, 4" 2
91913703 Band Clamp, 6" 3
01397400 Bird Screen, 6" 1
01365000 Mounting Angle 6
90430600K Pressure Switch Kit Includes: 1
90430600 Pressure Switch 1
91417409 Silicone Hose 1
91220201 Barbed Fitting 1
91104001 Locknut 2
94118106
96211000
93511706
92311800
Screw
Lock Washer
Screw
Locknut
01311701 EP-300 Accessory Package Includes: 1
T00680 Isolator Pad 4
93413912 Bolt (5/16 -18 x 3/4) 6
97213920 Bolt (5/16 -18 x 1 1/4) 4
95211600 Flat Washer (5/16) 20
96411600 Lockwasher (5/16) 10
92113900 Hex Nut 10
T0010 Screw #10 3
127302NA
CORAYVAC
CRVSF burner carton)
®
Installation, Operation and Service Manual
#
8 x 3/8
#
10
#
10-32 x 3/8
#
10-32
®
Classic SF Installation, Operation and Service Manual (Included in
1
2
2
2
2
6 of 31
Page 13
SECTION 4: MAJOR COMPONENTS
Table 2: EP-301 Pump Package 6" (P/N 02723016)
Part No. Description Quantity
Box 1 of 2
02730101 EP-301 Pump Assembly Includes: 1
90713454 Pump Inlet Assembly, 455 mm dia 1
90713451 Pump Scroll Assembly, 529 mm dia 1
01312105 EP-300 Scroll/Inlet Fastener Package 1
127202NA EP-300 Series Installation, Operation and Service Manual 1
127102NA
CORAYVAC
Box 2 of 2
02730106 EP-300 Accessory Package 6" Includes: 1
91412802 Pump Boot (6" x 10") 2
91913703 Band Clamp, 6" 5
01397400 Bird Screen, 6" 1
01365000 Mounting Angle 6
90430600K Pressure Switch Kit Includes: 1
90430600 Pressure Switch 1
91417409 Silicone Hose 1
91220201 Barbed Fitting 1
91104001 Locknut 2
94118106
96211000
93511706
92311800
Screw
Lock Washer
Screw
Locknut
01311701 EP-300 Accessory Package Includes: 1
T00680 Isolator Pad 4
93413912 Bolt (5/16 -18 x 3/4) 6
97213920 Bolt (5/16 -18 x 1 1/4) 4
95211600 Flat Washer (5/16) 20
96411600 Lockwasher (5/16) 10
92113900 Hex Nut 10
T0010 Screw #10 3
127302NA
CORAYVAC
CRVSF burner carton)
®
Installation, Operation and Service Manual
#
8 x 3/8
#
10
#
10-32 x 3/8
#
10-32
®
Classic SF Installation, Operation and Service Manual (Included in
1
2
2
2
2
7 of 31
Page 14
EP-300 SERIES PUMP INSTALLATION, OPERATION AND SERVICE MANUAL
Table 3: EP-303 Pump Package 4" (P/N 02723034)
Part No. Description Quantity
Box 1 of 2
02730103 EP-303 Pump Assembly Includes: 1
90713454 Pump Inlet Assembly, 455 mm dia 1
90713451 Pump Scroll Assembly, 529 mm dia 1
01312105 EP-300 Scroll/Inlet Fastener Package 1
127202NA EP-300 Series Installation, Operation and Service Manual 1
127102NA
CORAYVAC
Box 2 of 2
02730104 EP-300 Accessory Package 4" Includes: 1
02719903 4" to 6" Adapter 1
91412802 Pump Boot (6" x 10") 1
91412801 4.5" Flexible Boot 1
91906900 Silicone Rubber Ring 2
91901300 Band Clamp, 4" 2
91913703 Band Clamp, 6" 3
01397400 Bird Screen, 6" 1
01365000 Mounting Angle 6
90430600K Pressure Switch Kit Includes: 1
90430600 Pressure Switch 1
91417409 Silicone Hose 1
91220201 Barbed Fitting 1
91104001 Locknut 2
94118106
96211000
93511706
92311800
Screw
Lock Washer
Screw
Locknut
01311701 EP-300 Accessory Package Includes: 1
T00680 Isolator Pad 4
93413912 Bolt (5/16 -18 x 3/4) 6
97213920 Bolt (5/16 -18 x 1 1/4) 4
95211600 Flat Washer (5/16) 20
96411600 Lockwasher (5/16) 10
92113900 Hex Nut 10
T0010 Screw #10 3
127302NA
CORAYVAC
CRVSF burner carton)
®
Installation, Operation and Service Manual
#
8 x 3/8
#
10
#
10-32 x 3/8
#
10-32
®
Classic SF Installation, Operation and Service Manual (Included in
1
2
2
2
2
8 of 31
Page 15
SECTION 4: MAJOR COMPONENTS
Table 4: EP-303 Pump Package 6" (P/N 02723036)
Part No. Description Quantity
Box 1 of 2
02730103 EP-303 Pump Assembly Includes: 1
90713454 Pump Inlet Assembly, 455 mm dia 1
90713451 Pump Scroll Assembly, 529 mm dia 1
01312105 EP-300 Scroll/Inlet Fastener Package 1
127202NA EP-300 Series Installation, Operation and Service Manual 1
127102NA
CORAYVAC
Box 2 of 2
02730106 EP-300 Accessory Package 6" Includes: 1
91412802 Pump Boot (6" x 10") 2
91913703 Band Clamp, 6" 5
01397400 Bird Screen, 6" 1
01365000 Mounting Angle 6
90430600K Pressure Switch Kit Includes: 1
90430600 Pressure Switch 1
91417409 Silicone Hose 1
91220201 Barbed Fitting 1
91104001 Locknut 2
94118106
96211000
93511706
92311800
Screw
Lock Washer
Screw
Locknut
01311701 EP-300 Accessory Package Includes: 1
T00680 Isolator Pad 4
93413912 Bolt (5/16 -18 x 3/4) 6
97213920 Bolt (5/16 -18 x 1 1/4) 4
95211600 Flat Washer (5/16) 20
96411600 Lockwasher (5/16) 10
92113900 Hex Nut 10
T0010 Screw #10 3
127302NA
CORAYVAC
CRVSF burner carton)
®
Installation, Operation and Service Manual
#
8 x 3/8
#
10
#
10-32 x 3/8
#
10-32
®
Classic SF Installation, Operation and Service Manual (Included in
1
2
2
2
2
9 of 31
Page 16
EP-300 SERIES PUMP INSTALLATION, OPERATION AND SERVICE MANUAL
SECTION 5: PUMP INSTALLATION
WARNING
Cut/Pinch Hazard
Wear protective gear during installation,
operation and service.
Edges are sharp.
Failure to follow these instructions can result
in injury.
NOTE: Installers may also visit Roberts-Gordon
Yo uTube page to view pump assembly video at
https://www.youtube.com/watch?v=F-u8xtvaAZ8
or scan the QR code below:
WARNING
Severe Injury Hazard
Secure pump to tube.
Hang pump with materials with a minimum
working load of 750 lbs (340 kg).
Failure to follow these instructions can result
in death, injury or property damage.
5.1 Pump Assembly Instructions
5.1.1 Determine Orientation of Pump Discharge
To e n s ure your safety, and comply with the terms of
the warranty, all units must be installed in
accordance with these instructions.
The pump must be installed in a location that it is
readily accessible for servicing.
For CRVSF-Series only, a minimum of 18" (45 cm)
ceiling clearance in accordance to National Fire Protection Association (NFPA) 30A latest revision is
required.
An arrow is affixed to the outside of the pump scroll to
indicate the direction of rotation of the impeller. The
standard rotation of the impeller is in the counterclockwise direction.
10 of 31
Pump discharge orientation is viewed from the rear of
the motor as shown in on Page 11, Figure 3. Note
that the pump scroll outlet must always be positioned
Page 17
SECTION 5: PUMP INSTALLATION
Bottom Right Horizontal Discharge
Bottom Left Horizontal Discharge
at the bottom horizontal position.
FIGURE 3: Pump Discharge Orientation
the impeller blades and the body of the pump
scroll.
5.1.3 Attaching Pump Inlet Assembly
From scroll assembly side of pump, orient inlet
assembly so threaded pipe co
upling is on top. See
partial end view on Page 12, Figure 4.
• Place inlet assembly onto scroll assembly by fitting inlet assembly onto M8 screw studs on scroll
assembly. Be careful not to damage gasket.
•Place M8 washers onto M8 screw stud. Thread
M8 hex nuts onto M8 screw studs, finger tighten.
Repeat for all 12 screw studs. See Page 12, Fig-
ure 4.
• Go back and tighten all 24 M8 hex nuts (torque to
132 in/lb) with a wrench to completely secure
pump scroll assembly to pump frame and pump
inlet assembly to pump scroll assembly.
5.1.2 Attaching Pump Scroll
After determining the correct orientation of the pump
scroll outlet, attach the pump scroll to the pump
frame as follows:
• In Box 1 of 2, locate the EP-300 Scroll/Inlet fastener package containing hex nuts and washers.
• Place scroll assembly over impeller and align M8
screw studs on the scroll assembly with the holes
on the frame. Place the scroll assembly onto the
pump frame. Be careful not to damage gasket.
• From the motor side of the vertical mounting plate
of the frame, place an M8 washer onto the M8
screw stud. Then thread the M8 hexnut onto the
M8 screw stud, finger tighten. Repeat for all 12
screw studs. See Page 12, Figure 4.
NOTE: While tightening the nuts (torque to 132
in/lb) that secure the pump scroll to the pump
frame, periodically spin the impeller to be sure
that adequate clearance is maintained between
11 o f 3 1
Page 18
EP-300 SERIES PUMP INSTALLATION, OPERATION AND SERVICE MANUAL
Side View
M8 Screw
Stud
Scroll Assembly
Impeller
End View
M8 Hexnut
and Washer
M8 Hexnut
and Washer
Vertical
Mounting
Plate
Inlet Assembly
Description Part Number
Pump Scroll 90713451
Hex Nut, M8 (24) 92204502
Washer, M8 x 16 OD x 1.6 95204502
Impeller 90713340
Clockwise RotationCounterclockwise Rotation
Arrow showing direction of rotation
(located on the scroll housing)
Bottom Left Horizontal Discharge PositionBottom Right Horizontal Discharge Position
FIGURE 4: Pump Assembly
5.2 Pump Impeller Rotation
Rotation of impeller, as viewed from behind motor,
must be clockwise when pump discharge orientation
is bottom left horizontal. Rotation of impeller, as
viewed from behind motor, must be counterclockwise
FIGURE 5: Pump Impeller Rotation
when pump discharge orientation is bottom right horizontal. An arrow label on pump scroll indicates direction of impeller rotation. To set rotation direction, see
wiring diagram located on motor, after completing
Section 5.
12 of 31
Page 19
SECTION 5: PUMP INSTALLATION
Description Part Number
Pump Boot 4.5" (11 cm) 91412801
Band Clamp 4" (10 cm) 91901300
Inlet Assembly 90713454
4x6 Adapter 02719903
Silicone Rubber Ring 91906900
Band Clamp
6" (15 cm)
Pump Boot
6" (15 cm)
CONNECT
TO SYSTEM
TUBING
6" (15 cm)
Inlet
Assembly
Description Part Number
Pump Boot 6" (15 cm) 91412802
Band Clamp 6" (15 cm) 91913703
Inlet Assembly 90713451
Band Clamp
6" (15 cm)
Pump Boot
6" (15 cm)
CONNECT
TO FLUE
6" (15 cm)
The minimum diameter outlet
allowed is 6" (15 cm). Further
reduction will reduce pump
performance.
Description Part Number
Pump Boot 6" (15 cm) 91412802
Band Clamp 6" (15 cm) 91913703
5.2.1 Pump Inlet Adapter for 4" (10 cm) Tubing
and Schedule 40 Pipe
Apply a bead of silicone sealant (600 °F) to the 6" (15
cm) inside of the adapter (6" x 4") (15 cm x 10 cm).
Mount the adapter to the inlet of the pump scroll
using the 3 - #10 self drilling screws provided. See
Page 13, Figure 6.
IMPORTANT: To prevent leakage of condensate, do
not install screws at the 6 o’clock position.
Mount the pump boot to the inlet adapter using the
band clamp provided. See Page 13, Figure 6.
When connecting pump to 4" tubing, install silicone
rubber rings on both inlet and tubing. When connecting pump to Schedule 40 steel pipe, install silicone
rubber rings only on inlet adapter.
5.2.2 Pump Inlet for 6" (15 cm) Tubing
Attach 6" (15 cm) pump boot to the inlet, See Figure
7, then See Section 5.2.3.
FIGURE 7: Pump Inlet Side 6"
FIGURE 6: Pump Inlet Side 4"
5.2.3 Discharge Connection to 6" (15 cm) Flue
Mount the 6" (15 cm) pump boot to the pump outlet
using the 6" (15 cm) band clamp provided. See Page
13, Figure 8.
FIGURE 8: Pump Discharge Side
13 of 31
Page 20
EP-300 SERIES PUMP INSTALLATION, OPERATION AND SERVICE MANUAL
Pressure Switch
Mounting Holes
(located on both
sides of pump frame)
Barbed
Fitting
Silicone Hose
Pressure Switch
Ground Screw
Common Terminal
Normally Open Terminal
Connect wire leads provided to terminals 1 and 2
labeled (C) Common and (NO) Normally Open. Refer
to pressure switch kit installation instructions or control panel installation instructions for connection to
controls.
SECTION 6: PRESSURE SWITCH MOUNTING AND WIRING
6.1 Pressure Switch Installation
For connection to a pump, locate the two pressure
switch mounting holes on the pump frame. If replac-
ing an old pressure switch, you may need to drill two
holes in the pump frame (7/32" dia. approximately
13/16" apart).
FIGURE 9: Pressure Switch Mounting Holes
6.1.1 Attaching Pressure Switch to Pump Inlet
Apply silicone sealant (600 °F) to the threads of the
pressure switch and then screw the pressure switch
into the 1/8" NPT hole provided on the pump inlet.
See Page 12, Figure 4. Care must be taken to make
certain that the application of silicone does not plug
the orifice hole of the pressure switch. Without pump
verification, the system will not operate.
Using screws and locknuts included, mount the
switch to the pump frame. Thread the barbed fitting
into the threaded hole at the pump inlet. Cut the silicone tube to the appropriate length to eliminate the
possibility of kinks and securely attach the hose to
the pressure s
FIGURE 10: Mounted Pressure Switch
witch and the barbed fitting.
FIGURE 11: Pump Pressure Switch Wiring
14 of 31
Page 21
SECTION 7: PUMP MOUNTING INSTRUCTIONS 7.1 Mounting Platform
Mounting
Angle
Hex Head Bolt
Flat Washer
Lockwasher
Hex Nut
Flat Washer
Description Part Number
Mounting Angle 01365000
Hex Bolt 5/16" x 3/4" 93413912
Flat Washer 95211600
Lockwasher 96411600
Hex Nut 92113900
The standard method of mounting the pump is on an
outside wall and venting directly through the wall.
The pump may be mounted by using mounting
angles as shown in Figure 12 and Figure 13. The two
mounting angles form a mounting platform to which
the pump will be attached.
Fix the mounting frame to the wall using anchors.
Select an anchor that will give equal to or greater
than 2000 lbs ultimate pull-out strength.
For CRVSF-Series only, a minimum of 18" (45 cm)
ceiling clearance in accordance to National Fire Protection Association (NFPA) 30A latest revision is
required.
FIGURE 12: Wall Bracket Assembly
SECTION 7: PUMP MOUNTING I NSTRUCTIONS
FIGURE 13: Mounting Platform Options
15 of 31
Page 22
EP-300 SERIES PUMP INSTALLATION, OPERATION AND SERVICE MANUAL
WARNING
Electrical Shock Hazard
Disconnect electrical and gas before
servicing.
This appliance must be connected to a
properly grounded electrical source.
Failure to follow these instructions can result
in death or electrical shock.
Individual supply for pump
rated for total full load current
(See Page 29, Section 12.5 for
details).
SECTION 8: MOTOR WIRING
All wiring must comply with current wiring regulations
and any local regulations which may apply. Always
switch off the supply and disconnect before servicing.
®
TAG E
CTHN (P/N 152101NA) Installation, Operation
and Service Manuals.
Do not directly connect the controller relay terminals to
the pump motor.
The power to the EP-301 pump is not supplied
by the controller. Power is supplied by a
separate circuit and is switched by the controller
via a contactor with a 120 V AC coil. See Page 16,
Figure 14.
FIGURE 14: EP-301 Contactor Wiring Diagram
8.1 Impeller Rotation Direction
Prior to operation of the pump in the heating system,
operation and proper rotation of the impeller must be
verified. See impeller rotation direction arrow label on
the pump scroll for the correct rotation direction. For
reverse rotation, follow manufacturer's wiring diagram
located on motor.
The motor must be wired for clockwise or counterclock-
wise rotation as shown on wiring diagram located on
motor.
IMPORTANT: Improper rotation of the impeller will
not produce the vacuum required for proper system
operation.
8.2 EP-301 Wiring
The EP-301 motor is wired for 1 Ø, 230 V, 60 Hz
operation. For proper motor wiring, follow manufac-
turer's wiring diagram located on motor.
When controlled by a CORAYVAC® Heating Control,
use Contactor Package 28A (P/N 10050012). See
Page 16, Figure 14. See ROBERTS GORDON
CORAYVAC® Heating Control Manual (P/N
10091601NA) wiring details.
Wire the pressure switch per th
(P/N 127102NA) for CRV models, CORAYVAC
sic SF (127302NA) for CRVSF models or VAN-
e CORAYVAC®
®
®
Clas-
8.3 EP-303 Wiring
The EP-303 motor can be wired for 3 Ø,
208 V - 230 V/460 V, 60 Hz operation. For proper
motor wiring, follow manufacturer's wiring diagram
located on motor.
Do not directly connect the controller relay terminals to
the pump motor.
When controlled by a CORAYVAC
®
Heating Control,
use Contactor Package 17A (P/N 10050011). See
Page 17, Figure 15. See ROBERTS GORDON
®
CORAYVAC® Heating Control Manual (P/N
10091601NA) wiring details.
Wire the pressure switch per the appropriate wiring diagram in the Controller Installation Manual.
16 of 31
Page 23
SECTION 8: MOTOR WIRING
®
If using ROBERTS GORDON
CORAYVAC® Modulat-
ing Heating Control, the power to the EP-303 pump is
not supplied by the controller. Power is supplied by a
the ROBERTS GORDON
Heating Control Installation Manual (P/N 1006101NA)
for wiring details.
®
separate circuit and is switched by the controller via the
Variable Frequency Drive (VFD) 208 - 230 V only. See
FIGURE 15: EP-303 208 V - 230 V (or 460 V) 3 Ø Pump Starter Wiring Diagram
CORAYVAC® Modulating
17 of 31
Page 24
EP-300 SERIES PUMP INSTALLATION, OPERATION AND SERVICE MANUAL
WARNING
Carbon Monoxide Hazard
Pump must be vented to the outside.
Heaters must be installed according to the
installation manual.
Failure to follow these instructions can result
in death or injury.
WARNING
Cut/Pinch Hazard
Wear protective gear during installation,
operation and service.
Edges are sharp.
Failure to follow these instructions can result
in injury.
SECTION 9: VENTING
9.2 Venting the Pump
• The exhaust connection from the pump is 6" (15
cm) diameter.
• Connect the 6" (15 cm) pump boot (provided) to
the 6" (15 cm) flue pipe, using the 6" (15 cm)
band clamp provided.
• Venting from the p
horizontally or vertically. Horizontal discharge is
preferred. See Page 19, Figure 16. Vertical dis-
charge must be arranged as shown on Page 20,
Figure 17. Corrosion resistant pipe is required.
• Both horizontal and vertical venting must be
supported by suitable hangers.
• Vent lengths are allowed as follows:
VENT LENGTH VENT SIZE
Up To 10' (3 m) 6" (15 cm) vent - 1 elbow
Up To 25' (8 m) 7" (18 cm) vent - 3 elbow
Up To 50' (15 m) 8" (20 cm) vent - 3 elbow
ump may discharge either
9.1 General Venting Requirements
This pump must be vented in accordance with the
rules contained in this manual and with the following
national codes and any state, provincial or local
codes which may apply:
United States: Refer to National Fuel Gas Code
NFPA 54/ANSI Z223.1 - latest revision.
Canada: Refer to Natural Gas and Propane
Installation Code CSA B149.1 - latest revision.
9.3 Vent Material Recommendations
Vent recommendations:
1. Porcelain coated tubing 4" (10 cm) O.D. (P/N
9141030D)
2. Heat treated aluminized tubing 4" (10 cm) O.D.
(P/N 91409408)
Heat treated aluminized tubing 6" (15 cm) O.D.
(P/N E0009105)
3. Single wall flue pipe - minimum 26 ga.
(Not suitable for modulating and condensing
system designs.)
4. Schedule 40 ASTM A53 (Latest Edition) grade B
ERW black steel pipe.
NOTE: 4" (10 cm) O.D. Porcelain coated tubing (P/N
914030D), 4" (10 cm) O.D. Heat treated aluminized
tubing (P/N 91409408), and 6" (15 cm) O.D. Heat
treated aluminized tubing (P/N E0009105) are equiv-
alent to single wall flue pipe.
This section provides partial information about this
specification with regard to size and configuration for
venting requirements. See Page 19, Figure 16 and
Page 20, Figure 17. However, to provide assurance
of proper and safe operation, it is the responsibility of
the installer to make sure the installation is in strict
accordance with all local and national codes.
18 of 31
9.4 Horizontal Venting
If using
condensation will form in the vent pipe. Insulation
and additional sealing measures will be required.
Seal all discharge pipe joints with high temperature
silicone adhesive.
vent lengths greater than 20' (6 m),
Page 25
SECTION 9: VENTING
NOTE: See Page 27, Section 11 for common
venting components and part numbers.
Description Part Number Description Part Number
Bird Screen 6" (15 cm) 01397400 Flexible Boot (6" x 10") 91412802
Pump Boot 6" (15 cm) 91412802
Band Clamp 6" (15 cm) 91913703
Vent Terminal 6" (15 cm) 90502101
• Vent must exit building not less than 7' (2 m)
above grade when located adjacent to public
walkways.
• Vent must terminate at least 3' (1 m) above any
forced air inlet located within 10' (3 m).
• Vent must terminate at least 4' (1.2 m) below 4'
(1.2 m) horizontally from or 12" (30 cm) above any
door, window or gravity air inlet into building.
• Locate vent terminal at least 12" (30 cm) from
any opening through which vent gases could
enter a building.
FIGURE 16: Horizontal Venting
• Use only corrosion resistant materials for the
discharge line from the pump to the point of
discharge.
• Vent terminal opening must extend beyond any
combustible overhang.
•Install vent terminal at a height sufficient to
prevent blockage by snow.
•Protect building materials from degradation by
flue gases.
• Any portion of flue pipe passing through a
combustible wall must be dual insu
lated and an
approved thimble must be used.
9.5 Vertical Venting
If using vent lengths greater than 20' (6 m),
condensation will form in the vent pipe. Insulation
and additional sealing measures will be required.
Length of flue pipe is equal to total of vertical and
horizontal length. Seal all discharge pipe joints with
high temperature silicone adhesive. Vertical venting
for CRVSF systems is not recommended.
9.6 Venting Accessories
NOTE: 4" (10 cm) accessories may only be used on
the inlet side of the EP-301 pump.
See Page 27, Section 11 for venting accessories.
19 of 31
Page 26
EP-300 SERIES PUMP INSTALLATION, OPERATION AND SERVICE MANUAL
20 (51 cm)
Bird Screen
Optional
NOTE: Vacuum loss
may occur when
using vent caps.
The use of bird screen
to cover vent terminations
is recommended.
Description Part Number
Tee 6" (15 cm) 01330204
Drain Cap 6" (15 cm) 02718852
FIGURE 17: Vertical Venting
9.7 Condensate Tee Assembly
The condensate tee assembly is composed of a tee,
draincap, and condensate trap.
If the system is designed in the condensing mode, then
the installation of a condensate tee assembly is
required. The condensate tee assembly, must be
installed on the inlet side of the pump assembly if there
is horizontal venting of the pump, See Page 21, Figure
18.
A condensate drain on the discharge side is required
if there is vertical venting of the pump or if there is a
vertical rise in the discharge line away from the
pump. See Page 21, Figure .
The condensate tee assembly in the discharge line
can be eliminated if the discharge line is horizontal
through the wall and pitched down at least 1/4" per
10' (6 mm per 3 m). This arrangement will permit
drainage of condensate through the pump and
outside via the horizontal (pitched) discharge line.
20 of 31
Page 27
FIGURE 18: Condensate Tee Assembly at Pump Inlet
Description Part Number
Tee 4" (10 cm) 01330203
Tee 6" (15 cm) 01330204
Drain Cap 4" (10 cm) 02718851
Drain Cap 6" (15 cm) 02718852
Condensate Valve Assembly 01327001
20” (51 cm)
SECTION 9: VENTING
FIGURE 19: Condensate Tee - Discharge Side
9.8 Condensate Trap and Condensate Tee
The condensate trap assembly (optional)
(P/N 01327001), should be installed on the inlet side
of the pump assembly, See Page 21, Figure 18.
It is possible to eliminate the condensate trap
assembly on the pump if the one-inch threaded hole
is plugged. This arrangement will permit drainage of
condensate through the pump and outside via
horizontal (pitched) discharge line.
The condensate trap assembly in the discharge line
can be eliminated if the discharge line is horizontal
through the wall and pitched down at least one inch
per foot. A condensate trap on the discharge side is
required if there is a vertical rise in the discharge line.
21 of 31
Page 28
EP-300 SERIES PUMP INSTALLATION, OPERATION AND SERVICE MANUAL
9.8.1 Condensate Neutralization Tube (optional)
If a condensate neutralization tube is specified to be
used with the heating system, follow the steps below
to choose the proper condensate neutralization tube.
See Page 23, Figure 20.
Step 1: Condensate flow (gal/h) per 100,000 Btu/h
installed
Yo u will need to know the tailpipe length per flow unit
and the total input (Btu/h) on the heating system.
Please refer to the following chart to determine the
condensate flow (gal/h) per 100,000 Btu/h installed:
Radiant Tube
Length
(average distance
between burners)
Minimum N/A 0.1 0.3 0.6
Recommended 0.1 0.3 0.6 0.8
Maximum 0.3 0.6 0.8 0.8
Minimum Recommended
Tailpipe Length per Flow Unit
1.7 ft/flow
unit
Maximum
Step 2: Total condensate
Determine the total condensate (gal/h) using the
follow calculation:
Total condensate (gal/h) = Total Input (Btu/h) /
100,000 (Btu/h) x condensate flow (gal/h)
Step 3: Choose the condensate neutralization
tube
Multiply the total input Btu/h / 100,000 by the
condensate flow (gal/h) per 100,000 (Btu/h)
(600,000/100,000) x 0.3 = 1.8 (gal/h)
Step 3: Choose the condensate neutralization
tube
Choose the condensate neutralization tube which is
closest to and higher than the calculated gal/h value.
For this example, the total condensate is 1.8 (gal/h),
the condensate neutralization tube which is closest
to and higher than the calculated gal/h value is P/N
01327002.
Calculated gal/h Description Part Number
Less than 2 Condensate Neutralization Tube 200 01327002
Less than 6 Condensate Neutralization Tube 600 01327003
Less than 10 Condensate Neutralization Tube 1000 01327004
Less than 20 Condensate Neutralization Tube 2000 01327005
NOTE: Condensate neutralization tubes must be
replaced yearly (every 2000 operating hours) or
check condensate water pH level. If it is below pH 6,
replace tube.
To order replacement, see the chart below:
Description Part Number
Condensate Neutralization Tube 200 01327002
Condensate Neutralization Tube 600 01327003
Condensate Neutralization Tube 1000 01327004
Condensate Neutralization Tube 2000 01327005
Refill, Condensate Neutralization Tube 600 01327007
Refill, Condensate Neutralization Tube 1000 01327008
Refill, Condensate Neutralization Tube 2000 01327009
Choose the condensate neutralization tube which is
closest to and higher than the calculated gal/h value.
Calculated gal/h Description Part Number
Less than 2 Condensate Neutralization Tube 200 01327002
Less than 6 Condensate Neutralization Tube 600 01327003
Less than 10 Condensate Neutralization Tube 1000 01327004
Less than 20 Condensate Neutralization Tube 2000 01327005
Example:
CORAYVAC
®
system has a total input of 600,000 Btu/
h. The radiant tube length and tailpipe are set-up
according to the RECOMMENDED specifications.
Step 1: Condensate flow (gal/h) per 100,000
Btu/h installed
Select 0.3 from the Condensate flow chart.
Radiant Tube
Length
(average distance
between burners)
Minimum N/A 0.1 0.3 0.6
Recommended 0.1 0.3 0.6 0.8
Maximum 0.3 0.6 0.8 0.8
Minimum Recommended
Tailpipe Length per Flow Unit
1.7 ft/flow
unit
Maximum
Step 2: Total condensate
22 of 31
Page 29
FIGURE 20: Condensate Neutralization Tube
Calculated gal/h Description Part Number
Less than 2 Condensate Neutralization Tube 200 01327002
Less than 6 Condensate Neutralization Tube 600 01327003
Less than 10 Condensate Neutralization Tube 1000 01327004
Less than 20 Condensate Neutralization Tube 2000 01327005
SECTION 9: VENTING
23 of 31
Page 30
EP-300 SERIES PUMP INSTALLATION, OPERATION AND SERVICE MANUAL
Cut/Pinch Hazard
Wear protective gear
during installation,
operation and service.
Edges are sharp.
WARNING
Failure to follow these instructions can result in death, electric shock, injury or property damage.
Burn Hazard
Allow heater and
pump to cool before
service.
Tubing may still be hot
after operation.
Explosion Hazard
Turn off gas supply to
heater before service.
DANGER
Electrical Shock Hazard
Disconnect electric
before service.
Heater and pump must
be connected to a
properly grounded
electrical source.
SECTION 10: SERVICING INSTRUCTIONS
10.1 Pre-Season Maintenance and Annual
Inspection
To e n s ure your safety and years of trouble-free operation of the pump, service and annual inspections
must be done by a contractor qualified in the installation and service of gas-fired heating equipment.
Disconnect electric and gas supplies before performing service or maintenance.
Before every heating season, a contractor qualified in
the installation and service of gas-fired heating
equipment must perform a thorough safety inspection of the pump.
For safety and best performance, the electrical, vent-
ing, suspensions and overall p
some of the areas requiring inspection.
Please see Page 26, Section 10.3 for suggested
items to inspect.
Disassembly and removal or replacement of any
pump components must be done by a service
contractor or electrician qualified in the installation
and service of gas-fired heating equipment.
Overtorquing can result in a failure of components.
Failure to follow these instructions can compromise
pump operation and void warranty.
24 of 31
10.2 To Change the Motor and/or the Impeller
1. Disconnect electrical power before servicing.
2. Remove the pump boots from the inlet and out-
let of the scroll assembly, disconnecting the
pump from tailpipe and vent pipe.
3. To remove the motor or impeller, the scroll must
be opened. Remove the twelve nuts on the
motor side of the pump frame.
4. Remove the scroll assembly and inlet assembly
from the frame as one piece.
ump condition are
Page 31
5. The impeller can be removed by loosening the
four set screws in the cooling disc, then remov-
ing the hex head bolt (M8 x 1 x 50) and washer
from the end of the motor shaft. With an appropriate wheel puller, remove the impeller.
6. The motor can now be removed, if necessary,
by removing the attachment hardware.
7. Re-assembly of motor/impeller combination
requires proper alignment. Be certain of proper
motor alignment and free rotation.
8. The four set screws should be reinstalled with a
drop of thread locking sealant and remain
unseated during initial re-assembly.
9. Slide the impeller onto the motor shaft end.
Apply a drop of thread locking sealant to the
threads of the hex head bolt. Slide the washer
onto the hex head bolt and thread the bolt into
the shaft so that it bottoms on the end of the
shaft and hub of the impeller. Torque to 120 in/
lbs.
SECTION 10: SERVICING INSTRUCTIONS
10.Seat the four set screws. Torque to 140 in/lbs.
11. Re-attach the scroll and tighten the twelve nuts.
25 of 31
Page 32
EP-300 SERIES PUMP INSTALLATION, OPERATION AND SERVICE MANUAL
10.3 Maintenance Checklist
Installation Code and Annual Inspections:
All installation and service of ROBERTS GORDON
®
equipment must be performed by a contractor
qualified in the installation and service of equipment
sold and supplied by Roberts-Gordon LLC and
conform to all requirements set forth in the
®
ROBERTS GORDON
manuals and all applicable
governmental authorities pertaining to the
installation, service, operation and labeling of the
equipment.To help facilitate optimum performance
System Tubing and Vent
Pipe
Vent ing must be intact. Using a flashlight, look for obstructions, cracks on the
pipe, gaps in the sealed areas or corrosion.
The area must be free of dirt and dust or blockage.
Remove any carbon deposits or scale using a wire brush.
Replace pipe if there are any holes due to corrosion. Seal any gaps in venting
to prevent condensate leakage.
Pump Scroll, Impeller and
Motor
Compressed air or a vacuum cleaner may be used to clean dust and dirt.
Check for corrosion, if any parts have corroded through, replace as necessary.
and safety, Roberts-Gordon LLC recommends that a
qualified contractor conduct, at a minimum, annual
®
inspections of your ROBERTS GORDON
equipment
and perform service where necessary, using only
replacement parts sold and supplies by RobertsGordon LLC.
Ensure all M8 nuts are tight for proper seal.
Suspension Points Make sure the pump is hanging securely.
Look for signs of wear on the mounting angles, wall mounting points or ceiling
mounting points.
Pump Boot Inspect pump boot at pump inlet and outlet for cracking or deterioration.
Replace if cracks are found.
Ensu
re band clamps are tight at all connection points.
Condensate Trap, Drain
Cap
Check connection of tee to drain cap and between tee and condensate trap.
Seal connections between tee and drain cap to prevent condensate leakage.
Screw condensate trap tightly into drain cap to prevent leakage.
Condensate trap should be filled with water.
Pressure Switch Ensure that wiring is intact. Check silicone hose for cracks.
Ensure secure connection between pressure switch and barbed fitting.
Safety Labels Product safety signs or labels should be replaced by the product user when
they are no longer legible. Please contact Roberts-Gordon LLC or your
ROBERTS GORDON
®
independent distributor to obtain replacement signs or
labels. See Page 2, Figure 1.
26 of 31
Page 33
SECTION 11: REPLACEMENT PARTS AND ACCESSORIES
Carbon Monoxide Hazard
WARNING
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.
Explosion Hazard
DANGER
Electrical Shock Hazard
Fire Hazard
Pump Boot
6" (15 cm)
Band Clamp
6" (15 cm)
Motor
Pump Boot
4" or 6"
(10 or 15 cm)
Band Clamp
4" or 6"
(10 or 15 cm)
Adapter
4" to 6"
(10 to15 cm)
for 4" (10 cm)
tailpipe only
SECTION 11: REPLACEMENT PAR TS AND ACCES SORIES
11.1 Replacement Parts
Description Part Number Description Part Number
Motor 2 HP, 230 V, 1 Ø 90605102 Isolator Pads T00680
Motor 2 HP, 208 V - 230 V/460 V, 3 Ø 90605103 4.5" (11 cm) Flexible Boot 91412801
Impeller Assembly, 340 mm dia. 90713340 6" (15 cm) Pump Boot 91412802
4" (10 cm) Band Clamp 91901300 Mounting Angle 01365000
6" (15 cm) Band Clamp 91913703 Adapter 6" x 4" (15 cm x 10 cm) 02719903
Pressure Switch 90430600K Bird Screen with Clamp 01397400
Pump Scroll Assembly 90713451 Pump Inlet Assembly 90713454
Silicone Rubber Ring 91906900
11.2 Accessories
Description Part Number Description Part Number
4" Plain Coupling 01312700 4" Aluminized 90° Elbow 01335801
6" Plain Coupling 01312706
4" Lined Coupling
4" Damper Coupling 01331900
6" Damper Coupling E0009356 4" Aluminized Non Heat Treated 10’ Tube 91409403
0131270I
6" Aluminized 90° Elbow T0100320
4" Coated 90° Elbow 0133580D
6" Coated 90° Elbow 0133660D
27 of 31
Page 34
EP-300 SERIES PUMP INSTALLATION, OPERATION AND SERVICE MANUAL
Description Part Number Description Part Number
4" Aluminized Tee 01330203 6" Aluminized Non Heat Treated 10’ Tube 91409420
6" Aluminized Tee 01330204 4" Coated 10’ Tube 9141030D
4" Coated Tee 0133022D
Aluminized Tube adapter (6" dia. x 4" dia.) 91418200
6" Coated Tee 0133025D 6" Tube and Reflector Hanger 91240010
4" Aluminized Cross 01330903
4" Drain Cap 02718851
6" Aluminized Cross 01330904 6" Drain Cap 02718852
4" Coated Cross 0133092D Condensate Trap 01327001
4" (10 cm) Band Clamp 91901300
6" (15 cm) Band Clamp 91913703
Schedule 40 Damper Nipple 01322000
28 of 31
Page 35
SECTION 12: SPECIFICATIONS
25 19/32"
(65 cm)
6"
(15 cm)
4 3/4"
(12.2 cm)
15 1/8"
(38.5 cm)
16 11/16
(41.5 cm)
6" (15 cm)
1 3/4" (4.4 cm)
8 5/64"
(20.5 cm)
24 5/8"
(63 cm)
10 5/8"
(27 cm)
20 25/32
(52.8 cm)
12.5 Pump Specifications
Model EP-301 EP-303
Horsepower (Hp) 2 2
Phase (Ø)13
Hertz (Hz) 60 60
Voltage (V) 115/208 - 230 208 -230 / 460
Full Load Amp (A) 17.4/9.62 - 8.7 5.46 - 4.94/2.47
R.P.M. 3495 3520
Motor Frame 90 90
Motor Enclosure TEFC TEFC
Noise Level @ 5' dB(A) N/A N/A
Inlet/Outlet (In.) 6 6
Weight (lbs.) 170 170
SECTION 12: SPECIFICATIONS
12.1 Material Specifications
12.1.1 Pump Frame, Inlet, Scroll and Impeller
3 mm welded steel construction
12.2 EP-301 Controls Specifications
Motor controls and contactors are sold separately.
Use contactor package.
12.4 General Dimension Specifications
12.3 EP-303 Controls Specifications
Motor starters are sold separately.
When using a CORAYVAC
®
Heating Control, use
Starter Package P/N 10050010.
With ROBERTS GORDON
®
CORAYVAC® Modulating
Heating Control, variable frequency drive is included
with controller.
29 of 31
Page 36
EP-300 SERIES PUMP INSTALLATION, OPERATION AND SERVICE MANUAL
SECTION 13: THE
ROBERTS GORDON
®
EP-300
SERIES PUMP WARRANTY
ROBERTS-GORDON LLC WILL PAY FOR:
Within 36 months from date of purchase by buyer or 42
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
®
EP-300 Series Pump warranty.
ROBERTS-GORDON LLC 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
®
EP-300 Series Pump in any
way.
®
• Use of the ROBERTS GORDON
EP-300 Series
Pump for other than its intended purpose.
• Incorrect gas or electrical supply, accident, fire,
floods, acts of God, war, terrorism, or other casualty.
• Improper service, use of replacement parts or
accessories not specified by Roberts-Gordon LLC.
• Failure to install or maintain the ROBERTS
®
GORDON
EP-300 Series Pump as directed in the
Installation, Operation and Service Manual.
• Relocation of the ROBERTS GORDON
®
EP-300
Series Pump after initial installation
• Use of the ROBERTS GORDON
®
EP-300 Series
Pump in a corrosive atmosphere containing
contaminants.
®
• Use of the ROBERTS GORDON
EP-300 Series
Pump in the vicinity of a combustible or explosive
material.
®
• Any defect in the ROBERTS GORDON
EP-300
Series Pump 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.
WARRANTY IS VOID IF:
The ROBERTS GORDON
installed by an contractor qualified in the installation and
service of gas fired heating equipment.
Yo u cannot prove original purchase date and required
annual maintenance history.
®
EP-300 Series Pump is not
The data plate and/or serial number are removed,
defaced, modified or altered in any way.
The ownership of the ROBERTS GORDON
®
EP-300
Series Pump is moved or transferred. This warranty is
non-transferable.
Roberts-Gordon LLC is not permitted to inspect the
damaged equipment and/or component parts.
READ YOUR INSTALLATION, OPERATION AND
SERVICE MANUAL.
If you have questions about your equipment, contact your
installing professional. Should you need Replacement
Parts or have additional questions, call or write:
Roberts-Gordon LLC
1250 William Street
P. O . B o x 4 4
Buffalo, New York 14240-0044
Telephone: +1.716.852.4400
Fax: +1.716.852.0854
Toll Free: 800.828.7450
www.robertsgordon.com
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
you for the ROBERTS GORDON
®
EP-300 Series Pump.
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.
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.
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
authorized Executive Officer.
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SECTION 13: THE ROBERTS GORDON® EP-300 SERIES PUMP WARRANTY
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