LAARS SMB-250 User Manual

User's Information Document 1141A

User's Information for

SUMMIT

Modulating Condensing Boiler

Models SMB-200

SMB-250

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.

If the information in this manual is not

WARNING

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.

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.

AVERTISSEMENT

H2211300A

Page 2

Table of Contents

SECTION 1.
Caring For Your Summit

1A. General Care ................................................ 5

1B. Annual Inspection of Flues and Vents........... 5

1C. Shutting Down the Summit ........................... 5

1D. To Restart Summit........................................ 5

1E. Annual Inspection of Condensate

Drain System ................................................ 6

1F. In the Event of Power Failure ........................ 6

1G. Full Service Every 3 Years ............................ 6

1H. Trouble Shooting - Fault Codes .................... 7

1H-1. Fault Code Identification ............................... 7

LAARS HEATING SYSTEMS

SUMMIT

Page 3

FOR YOUR SAFETY READ BEFORE OPERATING

WARNING

If you do not follow these instructions exactly, a fire or explosion

may result, causing property damage, personal injury or loss of life.

A. This appliance does not have a pilot. It is

equipped with an ignition device which
automatically lights the burner. Do not try to
light the burner by hand.

B. BEFORE OPERATING smell all around the

appliance area for gas. Be sure to smell next
to the floor because some gas is heavier
than air and will settle on the floor.
WHAT TO DO IF YOU SMELL GAS

• Do not try to light any appliance.

• Do not touch any electric switch; do not
use any phone in your building.

• Immediately call your gas supplier from a
neighbor's phone. Follow the gas
supplier's instructions.

OPERATING INSTRUCTIONS

1. STOP! Read the safety information above on
this label.

2. Set the thermostat to lowest setting.

3. Turn off all electric power to the appliance.

• If you cannot reach your gas supplier, call
the fire department.

C. Turn off gas shutoff valve (located above the

combination gas control) so that the handle
is aligned across the gas pipe. If the handle
will not turn by hand, don't try to repair it, call
a qualified service technician. Force or
attempted repair may result in a fire or
explosion.

D. Do not use this appliance if any part may

have been under water. Immediately call a
qualified service technician to inspect the
appliance and to replace any part of the
control system and any gas control which
may have been under water.

4. This appliance is equipped with an ignition
device which automatically lights the burner.
Do not try to light the burner by hand.

5. Remove front cover.

6. Turn gas shutoff valve to “off”. Handle will be
aligned across gas pipe. Do not force.

7. Wait five (5) minutes to clear out any gas. If
you then smell gas, STOP! Follow “B” in the
safety information above on this label. If you
don't smell gas, go to next step.

8. Turn gas shutoff valve to “on”. Handle will be
aligned along gas pipe.

9. Turn on all electric power to appliance,
depress on/off button on control panel,
depress black button on top of control panel.

10. Replace front cover.

11. Set thermostat to desired setting.

12. If the appliance will not operate, follow the
instructions “To Turn Off Gas To Appliance”
and call your service technician or gas
supplier.

TO TURN OFF GAS TO APPLIANCE

1. Set the thermostat to lowest setting.

2. Turn off all electric power to the appliance if
service is to be performed.

3. Remove front cover.

4. Turn gas shutoff valve “off”. Handle will be
aligned across gas pipe. Do not force.

5. Replace front cover.

H2013100A

Page 4

LAARS HEATING SYSTEMS

PAR MESURE DE PRUDENCE, LISEZ CE QUI SUIT AVANT

DE FAIRE FONCTIONNER L’APPAREIL

MISE EN GARDE

Si vous ne suivez pas ces instructions à la lettre, un incendie ou une

explosion pourrait se produire et causer des dommages matériels,

des blessures personnelles ou même la mort.

A. Cet appareil n’est pas doté d’une veilleuse. Il est

équipé d’un dispositif d’allumage qui allume
automatiquement le brûleur. Ne tentez
d’allumer le brûleur manuellement.

B. AVANT D’UTILISER, vérifiez s’il n’y a pas

d’odeur de gaz près de l’appareil. Vérifiez s’il n’y
a pas d’odeur de gaz près du plancher, car le
gaz est plus lourd que l’air et peut se déposer
sur le plancher.
QUE FAIRE EN CAS D’ODEUR DE GAZ

• N’essayez pas d’allumer n’importe quelque
appareil que ce soit.

• Ne touchez pas à un commutateur électrique.
N’utilisez pas le téléphone de votre résidence.

• Appelez immédiatement votre fournisseur de
gaz en utilisant le téléphone de votre voisin.
Suivez les instructions de votre fournisseur de
gaz.

pas

NOTICE D’UTILISATION

1. ARRÊTEZ ! Lisez l’information de sécurité ci­dessus, sur cette étiquette.

2. Réglez le thermostat au réglage le plus bas.

3. Coupez l’alimentation électrique à l’appareil.

4. Cet appareil est doté d’un dispositif d’allumage
qui allumera automatiquement le brûleur.
Ne tentez

pas d’allumer le brûleur manuellement.

• Si vous ne pouvez joindre votre fournisseur
de gaz, appelez le service des incendies.

C. Fermez la soupape d’arrêt de gaz (située au-

dessus de la commande de gaz multifonctions)
de sorte que la poignée soit perpendiculaire au
tuyau de gaz. Si vous ne pouvez tourner la
poignée à la main, n’essayez pas de la réparer.
Communiquez avec un technicien de service
qualifié. Le fait de forcer ou de tenter de réparer
la poignée pourrait causer un incendie ou une
explosion.

D. N’utilisez pas cet appareil si l’une des pièces a

été plongée sous l’eau. Communiquez
immédiatement avec un technicien de service
qualifié afin qu’il inspecte l’appareil et remplace
toute pièce du système de commande et toute
commande de gaz qui aurait été plongée sous
l’eau.

5. Retirez le couvercle avant.

6. Mettez la soupape d’arrêt de gaz à «off». La
poignée se trouvera perpendiculaire au tuyau de
gaz. N’employez pas de force.

7. Attendez cinq (5) minutes afin que le gaz se
dissipe. Si vous croyez sentir une odeur de gaz,
ARRÊTEZ ! Reportez-vous aux instructions B ci­dessous, sur cette étiquette. S’il n’y a pas
d’odeur de gaz, passez à la prochaine étape.

8. Mettez la soupape d’arrêt de gaz à «on». La
poignée sera parallèle au tuyau de gaz.

9. Rétablissez l’alimentation électrique à l’appareil,
appuyez sur le bouton «on/off» qui se trouve sur
le panneau de commande, appuyez sur le
bouton noir qui se trouve sur le panneau de
commande.

10. Replacez le couvercle avant.

11. Réglez le thermostat à la température désirée.

12. Si l’appareil ne fonctionne pas, suivez les
directives relatives à la fermeture de
l’alimentation en gaz et communiquez avec votre
technicien de service ou le fournisseur de gaz.

FERMETURE DE L’ALIMENTATION EN GAZ

1. Réglez le thermostat au réglage le plus bas.

2. Coupez toute alimentation électrique à l’appareil
si celui-ci doit faire l’objet d’un entretien.

3. Retirez le couvercle avant.

4. Mettez la soupape d’arrêt de gaz à «off». La
poignée se trouvera perpendiculaire au tuyau de
gaz. N’employez pas de force.

5. Replacez le couvercle avant.

H2013100A

SUMMIT

Page 5

SECTION 1.
Caring For Your Summit

Your Summit 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 your Summit area clean and free from
combustible materials, gasoline and other flammable
vapors and liquids.

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. Should any deterioration exist, have the affected
parts replaced.

1C. Shutting Down the Summit Boiler

If the need arises to shut down your boiler, the
following steps are required.

1. Switch off main disconnect switch (located on

left side of unit).

2. Close manual gas shutoff valve above

combination gas control valve (inside unit).

3. Close main manual gas valve.

4. If freezing is anticipated, drain Summit and be

sure to also protect building piping from

freezing.

The above steps may require qualified service
personnel.

1D. To Restart Your Summit

Should the need arise, you may have to restart
your Summit. Follow these steps:

1. Momentarily depress reset button on top of

control panel

2. Turn up the thermostat to call for heat.

3. In approximately 2 seconds, the blower will

operate and ignition will occur after 35-40

seconds. It may take as long as 2½ minutes.

4. If it does not occur, wait 5 minutes and then

repeat steps 1 through 3.

5. If, after three attempts, you still do not get

ignition, shut down your Summit and call your

service man.
If drained, follow these steps:

1. Follow “Installation Manual” for proper filling

and purging.

2. Turn on main manual gas valve.

3. Remove front cover and turn on manual gas

shutoff valve, above combination gas control

valve.

4. Switch on main disconnect switch, depress on/

off button on front of control panel, and depress

black reset button on top of control panel (pump

and blower will start and igniter will be

energized, after 35 seconds the gas valve will be

energized, and ignition will occur). If ignition

does not occur within 2½ minutes 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.

Figure 1. Cutaway View of Appliance.

Page 6

LAARS HEATING SYSTEMS

1E. Annual Inspection of Condensate

Drain System

Visually inspect the condensate drain lines. If
either clear plastic line appears to be full of
condensate (water), loosen the nut on the jacket that
retains the line and remove the line from the jacket
and clear any obstruction from the line. Replace line
and tighten nut.

1F. In the Event of Power Failure

The Summit cannot be operated during an
electrical power outage. If there is an extended power
outage with danger of freezing, then the Summit (and
all other water systems) should be completely drained.
When draining the Summit, turn off gas and turn off
main power switch. When replacing in service, refer
to start-up instruction for proper filling and purging.

1G. 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 Summit.

WARNING

Do not use this boiler if any part may have 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
may have 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 appliance.

AVERTISSEMENT

En cas de surchauffe ou si l’admission de gaz ne
peut être coupée, ne pas couper ni débrancher
l’alimentation électrique de la pompe. Fermer plutôt
le robinet d’admission de gaz à l’extérieur de
l’appareil.

FOR SERVICE

Contact your installing contractor, gas utility, Laars
dealer or call Laars for the nearest authorized
representative in your area.

Figure 2. Components Identification.

SUMMIT

Page 7

Message

Identifies

Appliance Flow Temp (Supply)

Outdoor Air Temp

Calculated Set Point

On

Off

Lock Out

Third Failure (Failure Level)

Fault Code (Three) There are 7
different Fault Codes defined.

Freeze Protection

Figure 3. Typical Display Identification Codes.

1H. Trouble Shooting - Fault Codes

The Summit boiler is controlled by a Pactrol
integrated boiler control (PCB) which provides seven
fault codes with eight memories. To obtain fault
messages press-in on the message center fault button
until the first fault code (FL1) is displayed. The last
recorded fault will appear e.g. F-4 (flow thermistor
faulty - open or shorted). The control will then
sequence through all eight memories, indicating
alternately the fault number and the fault code (FL1,
F-?; FL2, F=?; …, FL8, F=?). The fault number in
fault code FL1 is the most recent fault.

To read or change mode

During operation display will default to supply
temperature. Press temperatures button repetitively.
To sequence through three temperature indicators.

Appliance in standby mode: will change to bFt on call
for heat.

Appliance switched OFF. Press ON/OFF button for “ON”.

After three trials for ignition, will stand in lockout. Press
reset on top of panel to retry.

To monitor, press and hold temperature button for five
seconds. Display will indicate first of eight fault memories
(FL1). Then display one of seven fault conditions that
occurred previously. Display will sequence through the
eight memories.

Sensor has detected return temperature below 39°F (4°C).

1H-1. Fault Code Identification

The following seven fault codes may be observed:
F- Error corrected, control in auto reset period

(10 seconds)
F-0 No fault has occurred
F-1 Error occurred while reading fault logic of

main control
F-2 Over heat thermostat (Boiler or Flue) has

operated (open circuit)
F-3 Fan fault
F-4 Flow thermistor faulty (open or short-

circuited)
F-5 Differential Pressure Switch Contacts

opened

800.900.9276 • Fax [phone] (Customer Service, Service Advisors)

20 Industrial Way, Rochester, NH 03867 • 603.335.6300 • Fax [phone] (Applications Engineering)

1869 Sismet Road, Mississauga, Ontario, Canada L4W 1W8 • 905.238.0100 • Fax [phone]

www.Laars.com Litho in U.S.A. © Laars Heating Systems 0810 Document 1141A

H2211300A