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18
LENNOX HEARTH PRODUCTS • MERIT
®
SERIES B-VENT GAS FIREPLACES • MODELS MLBV-35, MLBV-40 • CARE AND OPERATION INSTRUCTIONS
Figure 17
MILLIVOLT WIRING DIAGRAM
CAUTION: WHEN SERVICING CONTROLS,
LABEL ALL WIRES PRIOR TO DISCONNECTION.
WIRING ERRORS CAN CAUSE IMPROPER AND
DANGEROUS OPERATION.
VERIFY PROPER OPERATION AFTER SERVICING.
If any of the original wire must be replaced,
use Type AWM 105º C - 18 gage wire ONLY.
High Limit Switch
Control Switch*
Gas Control
Valve Terminals
Thermopile
H
I
L
O
W
P
I
L
O
T
P
I
L
O
T
O
N
ti
O
F
F
IN
OUT
TH
TP HTP
T
B-VENT APPLIANCES ONLY: The High Limit
Switch must be factory installed in series,
as shown. If wires to this switch must be
replaced, use Type AWM 200°C - 18 gage
wire ONLY.
_________
*Control switch options: ON/OFF wall switch, unit-mountable ON/OFF switch,
or ON/OFF remote control system
NOTE: DIAGRAMS & ILLUSTRATIONS ARE NOT TO SCALE.
WIRING DIAGRAMS
Wiring diagrams are provided for reference
purposes only. This information is also provided
on schematics attached directly to the appliance
on a pullout panel located within the control
compartment.
CAUTION: LABEL ALL WIRES PRIOR TO
DISCONNECTION WHEN SERVICING
CONTROLS. WIRING ERRORS CAN
CAUSE IMPROPER AND DANGEROUS
APPLIANCE OPERATION.
ATTENTION: AU MOMENT DE
L'ENTRETIEN DES COMMANDES,
ÉTIQUETEZ TOUS LES FILS AVANT DE
LES DÉBRANCHER. DES ERREURS DE
CÁBLAGE PEU-VENT ENTRAÎNER UN
FONCTIONNEMENT INADÉQUAT ET
DANGEREUX.
UNIT CATALOG NUMBERS AND
SHIPPING WEIGHTS
PRODUCT REFERENCE INFORMATION
Model Number ________________________________________________________
Serial Number ________________________________________________________
Date Installed _________________________________________________________
Gas Type Used ________________________________________________________
Dealer Name _________________________________________________________
ORDERING REPLACEMENT
PARTS
A complete parts list is found at the end of
this manual. Use only parts supplied from the
manufacturer.
With proper care and maintenance, your appli-
ance will provide many years of enjoyment. If
you should experience any problem, rst refer
to the troubleshooting guide in this manual. If
problem persists, contact your Lennox Hearth
Products dealer or distributor.
Normally, all parts should be ordered through
your Lennox Hearth Products distributor or
dealer. Parts will be shipped at prevailing prices
at time of order.
When ordering repair parts, always give the
following information:
1. Appliance model number.
2. Appliance serial number.
3. Part number.
4. Part description.
5. Quantity required.
6. Appliance installation date.
If you encounter any problems or have any
questions concerning the installation or ap-
plication of this system, please contact your
dealer or distributor.
PRODUCT REFERENCE
INFORMATION
We recommend that you record the important
reference information about your fireplace in
the space provided below.
Please call Lennox Hearth Products for the
phone number of your nearest Lennox Hearth
Products dealer who will answer your questions
or address your concerns.
LENNOX HEARTH PRODUCTS
1508 Elm Hill Pike, Suite 108
Nashville, TN 37210
Visit us at www.Lennox.com
1-800-9-LENNOX
Cat.
No.
Model
Shipping
Weight
Shipping
Volume
H8099 MLBV-35NM 86 lbs. 10.61 cu. ft.
H8100 MLBV-35PM 86 lbs. 10.61 cu. ft.
H8101 MLBV-35NE 86 lbs. 10.61 cu. ft.
H8102 MLBV-40NM 108 lbs. 14.01 cu. ft.
H8103 MLBV-40PM 108 lbs. 14.01 cu. ft.
H8104 MLBV-40NE 108 lbs. 14.01 cu. ft.