3
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
Input of millivolt model is variable. The rates
are shown in the following table:
This millavolt appliance is designed to operate
on either natural or propane gas. A millivolt
gas control valve with piezo ignition system
provides safe, efficient operation. External
electrical power is required to operate the air
circulation blower.
This appliance complies with National Safety
Standards and is tested and listed by OMNI-
Test Laboratories Inc.; Beaverton, Oregon
(Report No. 116-F-15-5) to ANSI Z21.88
(in Canada, CSA-2.33), and CAN/CGA-2.17-
M91 in both USA and Canada, as vented
gas heaters.
Installation must conform to local codes.
In the absence of local codes, installation
must comply with the current National Fuel
Gas Code, ANSI Z223.1 / NFPA 54 - latest
edition. (In Canada, the current CAN-1 B149
installation code). Electrical wiring must
comply with the National Electrical Code
ANSI/ NFPA 70 - latest edition. In Canada,
the current CSA C22-1 Canadian Electrical
Code - latest edition.

GENERAL INFORMATION

Installation, repair and annual service in-
spection should be performed by a qualified
service technician.
TABLE OF CONTENTS
Important Safety and
Warning Information ....................Page 2
Introduction ......................................Page 3
General Information ..........................Page 3
Burn-In Period ..................................Page 4
Lighting Millivolt Appliances .............Page 4
Gas Controls .....................................Page 4
Control Compartment Access ...........Page 4
Operation & Care of Your Appliance ..Page 5
Maintenance Procedures ...................Page 5
Maintenance Schedule ......................Page 7
Front Glass Door Assembly,
Removal and Installation .................Page 8
Burner Adjustments ..........................Page 8
Flame Appearance and Sooting .........Page 8
Log Placement Instructions ..............Page 9
Millivolt Appliance Checkout .............Page 12
Blower Operation ..............................Page 12
Fireplace Requirements .....................Page 12
Wiring Diagrams ...............................Page 12
Accessory Components ....................Page 13
Lighting Instructions – Millivolt ........Page 15
Replacement Parts List .....................Page 17
Troubleshooting Guide ......................Page 19
Product Reference Information .........Page 20

INTRODUCTION

The Insert model covered in this manual is
a B-Vent gas heater designed for residential
application for installation into an existing
masonry or factory built solid-fuel fireplace
using 4" diameter, UL1777 listed aluminum
liner for the exhaust.
The vent must be routed through the existing
fireplace flue system to the vent termination.
Millivolt Models with
MAnnually-Modulated Gas Valves
Nat. Gas Propane
Model No. Input Rate
(BTU/HR)
Input Rate
(BTU/HR)
EBVI25 17,000 to
25,000
19,500 to
25,000
EBVI30 21,500 to
30,000
22,000 to
28,000
Table 1

CONGRATULATIONS ON THE PURCHASE OF YOUR NEW GAS APPLIANCE MANU-

FACTURED BY LENNOX HEARTH PRODUCTS.

When you purchased your new gas-fired heater, you joined the ranks of thousands of
individuals whose answer to their home heating needs reflects their concern for efficiency
and our environment. We extend our continued support to help you achieve the maximum
benefit and enjoyment available from your new gas-fired heater. It is our goal at Lennox
Hearth Products to provide you, our valued customer, with an appliance that will ensure
years of trouble-free warmth and pleasure.
Thank you for selecting a Lennox Hearth Products gas-fired heater as the answer to
your home heating needs.
Sincerely,
All of us at Lennox Hearth Products
It is imperative that the control compart-
ment, burners and circulating air passage
ways of the appliance be kept clean.
S'assurer que le brùleur et le compartiment
des commandes sont propres. Voir les
instructions d'installation et d'utilisation
qui accompagnent l'appareil.
Table 2 shows the main burner gas orifice
size for the elevations indicated.
Model
No.
Orifice Size Elevation
Feet
(meters)
Nat.
Gas
Prop.
Gas
EBVI25 #41
(.096")
#53
(.0595")
0-4500
(0-1372)
EBVI30 #37
(.104")
1/16"
(.0625")
0-4500
(0-1372)
Table 2
Tables 3 and 4 show the gas pressure
requirements for all models:
Inlet Gas Supply Pressure (all models)
Fuel # Minimum Maximum
Natural Gas 4.5" WC
(1.12 kPa)
10.5" WC
(2.61 kPa)
Propane 11.0" WC
(2.73 kPa)
13.0" WC
(3.23 kPa)
Table 3
Manifold Gas Supply Pressure (all models)
Fuel # Low High
Natural
Gas
(Lo) 1.6" WC
(.40 kPa)
(Hi) 3.5" WC
(.87 kPa)
Propane (Lo) 6.3" WC
(1.57 kPa)
(Hi) 10.0" WC
(2.49 kPa)
Table 4