Roberts Gorden EP 100 Manual

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.
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 serviceman with necessary information.
Roberts-Gordon, LLC
1250 William Street
P. O . B o x 4 4
Buffalo, New York 14240-0044
Telephone: [phone]
Fax: [phone]
Toll Free: 800.828.7450
www.rg-inc.com
© Copyright 2006 Roberts-Gordon
Quality in Any Language™
EP-100 Pump
Installation,
Operation &
Service Manual
P/N 127201NA Rev. C 06/06

© 2007 Roberts-Gordon, LLC
All rights reserved. No part of this ork 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 - ithout the
ritten permission of Roberts-Gordon, LLC.
TABLE OF CONTENTS
SECTION 1: Heating System Safety ............................1
1.1 Manpower Requirements ....................................1
SECTION 2: Installer Responsibility............................2
2.1 Corrosive Chemicals...........................................2
2.2 National Standards and Applicable Codes .........2
SECTION 3: Unpacking the Pump ...............................3
3.1 Open Shipping Cartons ......................................3
SECTION 4: Major Components ..................................4
4.1 Standard Parts List .............................................5
SECTION 5: Pump Installation .....................................6
5.1 Pump Assembly Instructions ..............................6
5.2 Pump Mounting Instructions ............................. 10
5.3 Wall Mounting ................................................... 11
SECTION 6: Motor Wiring ...........................................14
6.1 Impeller Roatation Direction .............................14
6.2 EP-100 Wiring...................................................14
SECTION 7: Pressure Switch Mounting and Wiring.15
SECTION 8: Venting....................................................16
8.1 General Venting Requirements.........................16
8.2 Venting the Pump .............................................16
8.3 Horizontal Venting.............................................16
8.4 Vent Material Recommendations
(in order of preferred use)................................16
8.5 Vertical Venting.................................................17
SECTION 9: Servicing Instructions ...........................18
9.1 Pre-Season Maintenance and
Annual Inspection .............................................18
9.2 To Change the Motor and/or the Impeller .........18
9.3 Maintenance Checklist......................................19
SECTION 10: Replacement Parts and Accessories .20
10.1 Replacement Parts .........................................20
SECTION 11: Specifications .......................................21
11.1 Material Specification ......................................21
SECTION 12: The ROBERTS GORDON®EP-100
SERIES PUMP Limited Warranty........23
Printed in U.S.A.

TABLE OF FIGURES
Figure 1: Major Component Descriptions........................4
Figure 2: Pump Discharge Orientation............................6
Figure 3: Pump Assembly ...............................................7
Figure 4: Damper Assembly............................................8
Figure 5: Motor Shaft Seal Installation ............................9
Figure 6: EP-100 Mounting - Chain Suspension ...........10
Figure 7: Wall Bracket Assembly................................... 11
Figure 8: Wall Mounting Angle Assembly .....................12
Figure 9: Wall Mounting ................................................12
Figure 10: Optional Platform Assembly Mounting .........13
Figure 11: EP-100 Contactor Wiring Diagram...............14
Figure 12: Pressure Switch Mounting Holes.................15
Figure 13: Pressure Switch Mounting ............................15
Figure 14: Pump Pressure Switch ................................15
Figure 15: Horizontal Venting ........................................17
Figure 16: Vertical Venting ............................................17

SECTION 1: HEATING SYSTEM S AFETY
1
SECTION 1: HEATING SYSTEM SAFETY
Your 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.
This heating system is designed for heating
nonresidential indoor spaces. 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.
Thin sheet metal parts, such as the 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.
1.1 Manpower Requirements
To prevent personal injury and damage to the pump,
two persons will be required for installation.

EP-100 PUMP INSTALLATION, OPERATION AND SERVICE MANUAL
2
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 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 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 400 lbs
(181 kg).
2.1 Corrosive Chemicals
Roberts-Gordon 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.
CAUTION
Do not use heater and pump in an area containing
corrosive chemicals.
Avoid the use of corrosive chemicals to ensure a
longer life of the pump, burner, tubing and other
parts.
ailure to follow these instructions can result in
property damage.

SECTION 3: UNPACKING THE PUMP
3
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 62 lbs, 28.1 kg). This pump has
been tested prior to packing. The impeller was
dynamically balanced before assembly and requires
care in handling to avoid damage.
Severe Injury Hazard
Install pump scroll and inlet
assembly before operating high
speed rotating impeller.
Keep hands, fingers and clothing
away from inlet and outlet.
Install and operate equipment
according to installation manual.
Failure to follow these instructions
can result in death or severe injury.
WARNING

EP-100 PUMP INSTALLATION, OPERATION AND SERVICE MANUAL
4
SECTION 4: MAJOR COMPONENTS
FIGURE 1: Major Component Descriptions
EP-100 Pump Assembly - P/N 02719100 Pump Scroll - P/N 02757001
Band Clamp 4" (10 cm) - P/N 91901300 Pressure Switch - P/N 90430600K
Bird Screen 4" (10 cm) P/N 01365400
2 1/2'' S-Hook - P/N 91907302
Pump Boot - P/N 91412800
Pump Inlet Assembly - P/N 02724200

SECTION 4: MAJOR COMPONENTS
5
4.1 Standard Parts List
Table 1: EP-100 Pump Package 4" (10 cm) (P/N 02719105)
Part No. Description Quantity
Box 1 of 2
02719100 Pump Frame, Motor and Impeller Assembly 1
127102NA CORAYVAC® Installation, Operation and Service Manual 1
Box 2 of 2
02724700 EP-100 Accessory Package 1
127201NA EP-100 Installation, Operation and Service Manual 1
02724200 Pump Inlet Assembly 1
02757001 Pump Scroll 1
91901300 Pump Boot Clamps 4'' (10 cm) 5
91907302 2 1/2" S-Hooks 3
91412800 Pump Boots 4'' (10 cm) 2
92311600 #10-24 Keps Locknuts 12
90430600K Pressure Switch 1
02757500 Motor Shaft Seal 1
01365400 Bird Screen 4'' (10 cm) 1
01327500 Damper Assembly 1
01329500 Damper Support Assembly 1
93413008 Bolt 1/4" - 20 x 1/2" Hex Head 1
95211600 5/16" Flat Washer 1
96211500 1/4" External Tooth Lockwasher 1

EP-100 PUMP INSTALLATION, OPERATION AND SERVICE MANUAL
6
SECTION 5: PUMP INSTALLATION
5.1 Pump Assembly Instructions
5.1.1 Determine Orientation of Pump Discharge
To ensure 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.
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.
Pump discharge orientation is viewed from the rear of
the motor as shown in on Page 6, Figure 2. Note that
the pump scroll outlet must always be positioned at
the bottom horizontal position.
FIGURE 2: Pump Discharge Orientation
5.1.2 Attaching Pump Scroll
After determining the correct orientation of the pump
scroll outlet, attach the pump scroll to the pump
frame using the #10 - 24 Keps locknuts provided.
NOTE: Periodically spin the impeller to be sure that
adequate clearance is maintained between the
impeller blades and the body of the pump scroll.
Arrow showing direction of rotation
(located on front of scroll housing)
Counterclockwise Rotation
(Standard)
OUTLET
Clockwise Rotation
OUTLET

SECTION 5: PUMP I NSTALLATION
7
5.1.3 Attaching the Pump Inlet Assembly
From the scroll assembly side of the pump, orient the
inlet assembly so the threaded pipe coupling is on
the top. See partial end view on Page 7, Figure 3.
• Attach inlet assembly onto the scroll assembly by
using the #10 - 24 Keps locknuts provided.
FIGURE 3: Pump Assembly
Pump Inlet Assembly
Impeller
Pump Scroll
Partial End View
Rubber
Mounts
#10-24 Keps Locknuts - 12 Required
1/8" NPT
Pipe Coupling
Description Part Number
Rubber Mounts 91906100
Pump Scroll 02757001
Pump Inlet Assembly 02724200

EP-100 PUMP INSTALLATION, OPERATION AND SERVICE MANUAL
8
5.1.4 Damper Assembly
The pump is equipped with a damper assembly
which is used as a means of setting the system
vacuum. See the appropriate Installation, Operation
and Service Manual for additional vacuum setting
information.
1. When the pump is installed, be certain to lock
the damper in the full open position with the
(1/4"- 20) Hex Head bolt. See Figure 4.
2. The pump inlet assembly is provided with a 1/8"
N.P.T. tapping. This is to be located at the top
and used for connection of the pressure switch
(P/N 90430600K). See Page 15, Figure 13.
FIGURE 4: Damper Assembly
Damper Support Assembly
1/4"-20 x 1/2 Hex Head Bolt
1/4" Ext. Tooth Lock Washer
5/16" Flat Washer
Inlet Flange
Assembly
Restricter Assembly
Description Part Number
Damper Support Assembly 01329500
Inlet Flange Assembly 02724200
1/4"-20 x 1/2" Hex Head Bolt 93413008
1/4" Ext. Tooth Lock Washer 96211500
5/16" Flat Washer 95211600
Restrictor Assembly 01327500

SECTION 5: PUMP I NSTALLATION
9
5.1.5 Installing the Motor Shaft Seal
The motor shaft seal (P/N 02757500) eliminates air
leakage around the motor shaft and reduces the
associated noise. Install the shaft seal as follows:
1. Separate the motor shaft seal at the pre-cut
score line.
2. Wrap the shaft seal around the motor shaft hub
as shown.
3. Secure the shaft seal in position with the
adhesive strip provided.
FIGURE 5: Motor Shaft Seal Installation
WARNIN
Electrical Shock Hazard
Disconnect electrical power before service or
maintenance.
ailure to follow these instructions can result in
death or electrical shock.
Motor Shaft Seal
EP-100 Motor
Pump Frame
Motor Shaft Hub
Impeller
Pump Inlet Assembly
Pump Scroll
Description Part Number
EP-100 Motor 90604600
Motor Shaft Seal 02757500
Pump Scroll 02757001
Impeller 02791601
Inlet Plate Assembly 02724200

EP-100 PUMP INSTALLATION, OPERATION AND SERVICE MANUAL
10
5.2 Pump Mounting Instructions
5.2.1 Chain Suspension
The standard method of mounting the EP-100 pump
is suspending it from a chain and venting through the
roof.
FIGURE 6: EP-100 Mounting - Chain Suspension
S-Hook
(P/N 91907302)
(3 Supplied)
Chain 3/16"
or Larger
(Not Supplied)

SECTION 5: PUMP I NSTALLATION
11
5.3 Wall Mounting
5.3.1 Wall Mounting Platform
The alternative method of mounting the pump is on
an outside wall and venting directly through the wall.
The optional mounting angle package
(P/N 01312102) must be ordered if this method is
used.
The pump may be mounted by using mounting
angles as shown in Figure 7 and Figure 8, Page 12 .
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.
FIGURE 7: Wall Bracket Assembly
WARNING
Suspension Hazard
Mount pump with materials
with a minimum working
load of 400 lbs (181 kg).
Failure of the supports can
result in death, injury
or property damage.
Mounting
Angle
Hex Head Bolt
Flat Washer
Lockwasher
Hex Nut
Flat Washer
Description Part Number
Mounting Angle Package 01312102
Mounting Angle 01365000
Hex Bolt 5/16" x 3/4" 93413912
Flat Washer 95211600
Lockwasher 96411600
Hex Nut 92113900

EP-100 PUMP INSTALLATION, OPERATION AND SERVICE MANUAL
12
5.3.2 Mounting Platform (Angle Assembly)
Pump may be mounted by using mounting angles as
shown in Figure 8.
FIGURE 8: Wall Mounting Angle Assembly
FIGURE 9: Wall Mounting
7"
(18 cm)
11.5"
(29 cm)
Mounting
Angle
Assembly
(Standard)
4" (10 cm)
Tube
Thimble
(if applicable)
5/8" Diameter
Mounting Holes
7.5"
(19 cm)
7"
(18 cm)
4" (10 cm)
5-6"
(13-15 cm)
4" x 8"
(10 x 20 cm) Boot
10.25"
(26 cm) 11.5"
(29 mm)
7"- 8"
(18-20 cm)
10" (25 cm)
3.75" (9.5 cm)
4" x 8" (11 x 20 cm) Boot
5-6"
(13-15 cm)

SECTION 5: PUMP I NSTALLATION
13
5.3.3 Mounting Platform (Optional Platform Assembly)
If mounting on an outside wall is not practical, it may
be mounted on a platform suspended from the
ceiling, or for noise reduction, in an enclosure.
FIGURE 10: Optional Platform Assembly Mounting
Mounting
Angle (4)
Hex Head Bolt Flat Washer
Lock asher
Hex Nut
Flat Washer
11.5" or 7"
(29 or
18 cm)
Description Part Number
Mounting Angle Package 01312102
Mounting Angle 01365000
Hex Bolt 5/16" x 3/4" 93413912
Flat Washer 95211600
Lockwasher 96411600
Hex Nut 92113900

EP-100 PUMP INSTALLATION, OPERATION AND SERVICE MANUAL
14
SECTION 6: 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.
6.1 Impeller Roatation 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.
The motor must be wired for clockwise or
counterclockwise rotation.
IMPORTANT: Improper rotation of the impeller can
produce only half of the vacuum required for proper
system operation.
6.2 EP-100 Wiring
The EP-100 motor is wired for 1 Ø, 115 V, 60 Hz
operation. However, the motor can be rewired for
230 V operation by changing the motor connections
as indicated by the diagram on the motor connection
box cover.
Motor operation can be changed from
counterclockwise to clockwise as shown on Page 6,
Figure 2.
Wire the pressure switch per the CORAYVAC® or
VANTAGE®NP Installation, Operation and Service
Manual.
FIGURE 11: EP-100 Contactor Wiring Diagram
WARNING
Electrical Shock Hazard
Disconnect electrical power and gas supply 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.
Ground
Screw
O
r
a
n
g
e
B
l
a
c
k
Yellow
W
hi
te
B
r
o
w
n
R
e
d
115V Power Supply
(Control Panel or Relay)
Y
e
ll
o
w
/
B
la
c
k
Neutral (-)
Motor Junction Box
Hot (+)
Magnetek TENV Motor:
To reverse rotation, interchange
black and red leads.