Laars CB-M2-150 Operation manual

User's Information Document 1109B
User's Information for
9600 CB
Condensing Boiler
Models CB-M2-150
CB-M2-175
CB-M2-200
CB-M2-250
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.
13-025B

LAARS HEATING SYSTEMS
Page 2
WARNING
Do not use this boiler if any part has been under
water. Immediately call a qualified service
technician to inspect the boiler and to replace any
part of the control system and any gas control
which has been under water.
WARNING
Should overheating occur or the gas supply fail to
shut off, do not turn off or disconnect the electrical
supply to the pump. Instead, shut off the gas supply
at a location external to the boiler.

9600 CB Page 3
SECTION 1.
General Information
Your boiler will require very little maintenance.
However, as with any fine appliance, there are
certain steps you should take to insure continuing
optimum performance.
1A. General Care
Keep the boiler area clean and free from
combustible materials, gasoline and other flammable
vapors and liquids.
Keep grill openings on the boiler free for proper
ventilation of interior working parts.
Do not obstruct or block a free flow of air to the
unit to insure proper ventilation.
If you desire, clean the jacket surfaces with a
damp cloth and mild soap. Do not use flammable
cleaning materials.
Keep vent terminal free of obstructions  do not
pile snow against vent terminal.
1B. Annual Inspection of Flue and Vents
You should visually inspect the vent pipe once a
year.
Inspect interior of vent pipe and air intake pipe
with a light. No scaling, soot deposits or corrosion
should be seen. Should some be found have your
boiler cleaned following procedures listed in
Installation & Operating Instructions Manual or
have the corroded parts replaced.
Inspect the condensate drain system for leaks and
obstructions.
Figure 1.
2. Close manual gas valve on combination gas
control valve (inside unit).
3. Close main manual gas valve.
If freezing is anticipated, drain the boiler.
The above steps may require qualified service
personnel.
1D. To Restart Your Boiler
Should the need arise, you may have to restart
your 9600 CB. Follow these steps:
1. Momentarily switch off  power switch on the
left side of the boiler.
2. Turn up the thermostat to call for heat.
3. In approximately 1 minute, the blower will
operate and ignition will occur.
4. If it does not, wait 5 minutes and then repeat
steps 1-3.
5. If, after three attempts, you still do not get
ignition, shut down your boiler and call your
service man.
If drained:
1. Follow Installation & Operating Instructions
Manual for proper filling and purging.
2. Turn on main manual gas valve.
3. Remove jacket and turn on manual gas valve on
combination gas control valve.
4. Switch on main disconnect switch (pump and
blower will start and igniter will be energized,
after 25 seconds the flame safeguard system will
be energized, and ignition will occur). If the
ignition does not occur, switch off  main
disconnect switch, wait 5 minutes and switch
on  again. If after three attempts ignition does
not occur, initiate shutdown procedure and call
for service.
1E. In the Event of Power Failure
The boiler cannot be operated during an
electrical power outage. If there is an extended power
outage with danger of freezing, then the boiler (and all
other water systems) should be completely drained.
When draining the unit, turn off gas and turn off main
power switch. When replacing in service, refer to
start-up instruction for proper filling and purging.
1F. Full Service Every Three Years
In addition to the annual visual inspections by
the owner, a qualified service agency should conduct a
detailed inspection of all flue product carrying areas of
the boiler and vent system. This should be done in
accordance with the service instruction in the
Installation and Operating Instructions Manual
for the 9600 CB.
1C. Shutting Down the 9600 CB Boiler
If the need may arise to shut down your boiler,
the following steps are required.
1. Switch off main disconnect switch (located on
left side of unit).

13-025B
Waterpik Technologies, Inc.
6000 Condor Drive, Moorpark, CA 93021  805.529.2000  FAX [phone]
20 Industrial Way, Rochester, NH 03867  603.335.6300  FAX [phone]
480 S. Service Road West, Oakville, Ontario, Canada L6K 2H4  905.844.8233  FAX [phone]
www.laars.com Litho in U.S.A. © Laars Heating Systems 0003 Document 1109B