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Installation and Operation Instructions

Document 8001D

H2077800D

FOR YOUR SAFETY: This product must be installed and serviced by a professional service technician,
qualified in hot water heater 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.

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.

Summary of Contents for Mini-Combo II MCT

Page 1: ...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 tou...

Page 2: ...2 LAARS HEATING SYSTEMS TABLE OF CONTENTS SECTION 1 General Information 1A Introduction 3 SECTION 2 Installation 2A Location 3 2B Heater Placement 3 2C Piping 5 2D Wiring 5 6 7 2E Sequence of Operati...

Page 3: ...hot water taps take special precautions Install an anti scald valve at water heater or at each hot water faucet bath and shower outlet Use lowest practical temperature setting Studies have indicated...

Page 4: ...318 5 127 1 274 124 100 59 1518 14 362 5 127 1 280 127 125 59 1518 14 362 6 152 1 286 130 Domestic Figure 1 Dimensional Information Figure 2 Closet Installation 7 178 Figure 4 Typical Expansion Tank I...

Page 5: ...n Never use water heater boiler unless it is completely filled with water 2D Wiring Priority System Under this wiring the storage tank will be supplied before space heating This will insure that it ge...

Page 6: ...VENTER FAN PROVING SWITCH RECEPTACLE SEE DOC 1056 P Y W Y Figure 5 Wiring Diagrams H2001600J PILOT BURNER WITH SPARK ELECTRODE SENSOR THE BOILER WILL NOT OPERATE WITHOUT THE AUTOMATIC VENT DAMPER THE...

Page 7: ...Mini Combo II Page 7 Figure 6 MCT Schematic Some Canadian units are supplied with vent damper jumper plug Do not remove jumper unless vent damper is to be installed...

Page 8: ...Page 8 LAARS HEATING SYSTEMS Figure 7 MCS Schematic Some Canadian units are supplied with vent damper jumper plug Do not remove jumper unless vent damper is to be installed...

Page 9: ...peration 115 Volts Supply Tank Stat common Domestic Demand N C Heating Demand N O Tank Pump energized High Limit Switch Vent Damper Open Power Vent Fan Switch optional Heating Pump energized Safety Li...

Page 10: ...Page 10 LAARS HEATING SYSTEMS Figure 9 Parts Identification...

Page 11: ...d Supplied Nipple Brass 1 NPT x 3 LG 27 2 20087300 Door Latch Assembly 28 1 H2020600 Logo Mini Como II 29 1 H2016800 Label Warning Installation 30 2 H0090700 Label Hot 31 not shown part not sold 32 56...

Page 12: ...CA 93021 805 529 2000 FAX 805 529 5934 20 Industrial Way Rochester NH 03867 603 335 6300 FAX 603 335 3355 480 S Service Road West Oakville Ontario Canada L6K 2H4 905 844 8233 FAX 905 844 2635 www laar...

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