Bradford White MGH2000, MGH4000, Laars MagnaTherm, MGH2500, MGH3000 User Manual
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User’s Manual Document 1399
WARNING
AVERTISSEMENT
User’s Manual for
with Laars Linc
®
Modulating Boiler Water Heater
Model MGH1600 Model MGV1600
1,600 MBTU/h 1,600 MBTU/h
Model MGH2000 Model MGV2000
1,999 MBTU/h 1,999 MBTU/h
Model MGH2500 Model MGV2500
2,499 MBTU/h 2,499 MBTU/h
Model MGH3000 Model MGV3000
3,000 MBTU/h 3,000 MBTU/h
Model MGH3500 Model MGV3500
3,500 MBTU/h 3,500 MBTU/h
Model MGH4000 Model MGV4000
4,000 MBTU/h 4,000 MBTU/h
FOR YOUR SAFETY: This product must be installed and serviced by a professional service technician,
qualied in hot water boiler and heater installation and maintenance. Improper installation and/or operation
could create carbon monoxide gas in ue 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 followed
exactly, a re or explosion may result causing
property damage, personal injury or loss of life.
Do not store or use gasoline or other
ammable vapors and liquids in the vicinity of
this or any other unit.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any unit.
• 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 re department.
Installation and service must be performed by
a qualied 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 inammables 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 êtes.
• 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 service des incendies.
L’installation et l’entretien doivent être assurés par un
installateur ou un service d’entretien qualié ou par le
fournisseur de gaz.
H2397200-
Page 2
Contents
1. Shutting down the MagnaTherm .......... 2
2. Restarting the MagnaTherm................. 2
3. Start-Up and Shut-Down Decal. ........... 3
4. In the Event of Power Failure ............... 5
5. General Care ........................................ 5
6. Annual Inspection and Service ............. 5
7. For Service ........................................... 5
8. About Lockouts, Holds and Alerts ........ 5
9. The Touchscreen Display ..................... 6
LAARS Heating Systems
Rating
Plate
Touch
Screen
For full instructions regarding the MagnaTherm,
please reference the MagnaTherm “Installation
Power
Switch
and Operation Manual”, Document #1398. If not
available at or near the MagnaTherm, it can be
downloaded at www.laars.com
Door
Latch
1. Shutting down the MagnaTherm
It may sometimes be necessary to shut down the MagnaTherm.
Here are the steps required to do this:
1. Disconnect Power at the main electrical disconnect switch.
2. Open the front access doors and close the main manual gas valve
located above heat exchanger next to blower. It has a yellow
handle
3. If freezing is anticipated, drain the MagnaTherm (also be sure to
protect the piping in the
building from freezing).
The steps listed above may require
qualied service personnel.
Gas Valve
(shown in ON position)
The Manual
Shut O for
the 3500 / 4000
Models is on
the Left side of
the unit
2. Restarting the MagnaTherm
It may be necessary to restart the MagnaTherm – for example, after a power interruption. Here are the steps
required to do this:
1 Reset any errors. See the Section 12 “Troubleshooting” of the Installation and Operating Manual.
2 Turn up the thermostat to call for heat.
3. In approximately 2 seconds, the blower will operate. Ignition should occur after 35-40 seconds. It may take
as long as 2-1/2 minutes.
4. If ignition does not occur, wait 5 minutes and then repeat steps 1 through 3.
5. If, after three attempts, the unit still does not light, shut down the unit and call your service technician.
Example
MagnaTherm User’s Manual
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 is equipped with an ignition device which automatically lights the pilot.
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.
If you cannot reach your gas supplier, ca
ll the fire department.
C. Use only your hand to turn the gas valve handle. Never use tools. If the valve 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 has been under water. Immediately call a qualified
service technician to inspect the appliance and to replace any part of the control system
and any ga
s control which has been under water.
1. STOP! Read the safety information above on this label.
2. Turn off all electric power to the appliance.
3. Set the thermostat to lowest setting.
4.
5. Open front doors.
6. Turn off manual gas valve. Valve is off when valve handle is at a
right angle to gas pipe.
7. Wait five (5) minutes to clear out any gas. Then smell for gas,
including near the floor. If you do smell gas, STOP! Follow “B” in th
e
safety information above on this label. If you don’t smell gas, go to
next step.
8. Slowly turn manual gas valve to “ON”. Valve handle will be parallel to gas pipe.
9. Replace front panel.
10. Set mechanical thermostats to desired settings.
11. Turn on all electric power to the appliance.
13. If the appliance will not operate, follow the instructions “To Turn O Gas To Appliance”
12. Set operating thermostat to desired settings using boiler display.
and call your service technician or gas supplier.
1. Turn off all electric
power to the appliance if service is to be performed.
2.
Set the thermostat to lowest setting.
3.
4. Turn off manual gas valve. Valve is off when valve handle is at a right angle to gas pipe.
5.
Close front doors.
FOR YOUR SAFETY READ BEFORE OPERATING
OPERATING INSTRUCTIONS
TO TURN OFF GAS TO APPLIANCE
POUR VOTRE SÉCURITÉ, LISEZ AVANT DE METTRE EN MARCHE
Gas inlet
Manual Gas Valve
Shown in the
“OFF” Position
Do not try to light the pilot by hand.
Open front doors.
This appliance is equipped with an ignition device which automatically
lights the pilot. Do not try to light the pilot by hand.
3. Start-Up and Shut-Down Decal. Located inside the front panel.
Page 3
Continues on next page.
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