Laars Mini-Combo II MCS - Install and Operating Manual User Manual download pdf

Installation and Operation Instructions Document 8001F

H2077800F

Installation

and Operation

Instructions for

Mini-Combo II

(Models MCT, MCS)

Residential Gas-Fired

Space/Water Heater

NOTE: This manual is to be used in conjunction

with Document 1025, Installation and Operation

Instructions for Mini-Therm II JV boilers.

U.S. Trademark Reg. 2,094,168

China Trademark Reg. 988,311

FOR YOUR SAFETY: This product must be installed and serviced by a professional service technician,

qualified in hot water boiler installation and maintenance. Improper installation and/or operation could

create carbon monoxide gas in flue gases which could cause serious injury, property damage, or death.

Improper installation and/or operation will void the warranty.

WARNING

If the information in this manual is not

followed exactly, a fire or explosion may

result causing property damage, personal

injury or loss of life.

Do not store or use gasoline or other

flammable vapors and liquids in the vicinity

of this or any other appliance.

WHAT TO DO IF YOU SMELL GAS

• Do not try to light any appliance.

• Do not touch any electrical switch; do not

use any phone in your building.

• Immediately call your gas supplier from a

nearby phone. Follow the gas supplier's

instructions.

• If you cannot reach your gas supplier, call

the fire department.

Installation and service must be performed by

a qualified installer, service agency, or gas

supplier.

AVERTISSEMENT

Assurez-vous de bien suivres les instructions

données dans cette notice pour réduire au

minimum le risque d’incendie ou d’explosion ou

pour éviter tout dommage matériel, toute

blessure ou la mort.

Ne pas entreposer ni utiliser d’essence ni

d’autres vapeurs ou liquides inflammables dans

le voisinage de cet appareil ou de tout autre

appareil.

QUE FAIRE SI VOUS SENTEZ UNE ODEUR DE GAZ:

• Ne pas tenter d’allumer d’appareils.

• Ne touchez à aucun interrupteur. Ne pas vous

servir des téléphones dansle bâtiment où vous

vous trouvez.

• Appelez immédiatement votre fournisseur de

gaz depuis un voisin. Suivez les instructions

du fournisseur.

• Si vous ne pouvez rejoindre le fournisseur de

gaz, appelez le sservice des incendies.

L’installation et l’entretien doivent être assurés par

un installateur ou un service d’entretien qualifié ou

par le fournisseur de gaz.

A subsidiary of BRADFORD WHITE Corporation

1 2 3 4 5 6 ... 15 16

Summary of Contents

Page 1 - Mini-Combo II

Installation and Operation Instructions Document 8001FH2077800FInstallationand OperationInstructions forMini-Combo IITM(Models MCT, MCS)Residential Ga

Page 2 - TABLE OF CONTENTS

Page 10LAARS Heating SystemsFigure 8. MCT Schematic.**Some Canadian units are supplied with vent damper jumper plug. Donot remove jumper unless vent d

Page 3 - SECTION 2

Mini-Combo IIPage 11Figure 9. MCS Schematic, Sizes 50-75.

Page 4

Page 12LAARS Heating SystemsFigure 10. MCS Schematic, Sizes 100-125.**Some Canadian units are supplied with vent damper jumper plug. Donot remove jump

Page 5 - 2.4 Wiring

Mini-Combo IIPage 13Vent Damper MotorTransformerFigure 11. Sequence of Operation.115 Volts SupplyTank Stat(common)Domestic Demand(N.C.)Heating Demand(

Page 6

Page 14LAARS Heating SystemsFigure 12. Parts Identification.

Page 7 - MODEL MCT

Mini-Combo IIPage 15 # Qty Part # Description1 1 20085700 Weldment, Panel, Base2 1 20085600 Weldment, Panel, Top3 1 20086300 Weldment, Panel, Door4 1

Page 8

H2077800FA subsidiary of BRADFORD WHITE Corporation800.900.9276 • Fax 800.559.1583 (Customer Service, Service Advisors)20 Industrial Way, Rochester, N

Page 9

Page 2LAARS Heating SystemsTABLE OF CONTENTSSECTION 1.General Information1.1 Introduction... 3SECT

Page 10 - LAARS Heating Systems

Mini-Combo IIPage 3SECTION 1.General InformationWARNINGThis manual supplies information on the application,installation and operation of the indirect

Page 11

Page 4LAARS Heating SystemsB541372CVent Damper*TankRelief ValveTankAquastatDrainValve24610ACLHotWaterTankOutletInlet28711FRONT VIEW SIDE VIEW241/2622(

Page 12

Mini-Combo IIPage 52.3 Piping• To Prevent damage to the unit, all soldering is to bedone prior to assembling the cold and hot water,and any other conn

Page 13

Page 6LAARS Heating SystemsElectrical Connection: (See Figure 5, 6 and 7)1. Remove the two screws attaching the front cover ofthe control box.2. There

Page 14

Mini-Combo IIPage 7H2001700HTHE BOILER WILL NOT OPERATE WITHOUTTHE AUTOMATIC VENT DAMPER. THE VENTDAMPER WIRE HARNESS MUST BEINSERTED INTO THE VENT DA

Page 15 - Replacement Parts

Page 8LAARS Heating SystemsFigure 6. Wiring Diagram, Model MCS, Sizes 50-75.

Page 16 - H2077800F

Mini-Combo IIPage 9Figure 7. Wiring Diagram, Model MCS, Sizes 100-125.