Lighting Instructions - UTICA BOILERS MGB50 Installation, Operation & Maintanance Manual

National Excelsior Company
www.excelsiorhvac.com
IF YOU DO NOT FOLLOW THESE INSTRUCTIONS EXACTLY, A FIRE OR EXPLOSION MAY RESULT,
CAUSING PROPERTY DAMAGE, PERSONAL INJURY OR LOSS OF LIFE.
Before any procedures are attempted on this appliance, it is necessary to determine if the ignition system
is electric or standing pilot. If you are uncertain, contact the manufacturer before proceeding.
Before lighting any type of pilot burner (standing
or intermittent), make certain the hot water boiler
and system are full of water to minimum pressure
of 12 lbs. per square inch in the system, and also
make certain that the system is vented of air. Set
the operating control of thermostat to a "below"
normal setting. Refer to the following appropriate
lighting instruction.
LIGHTING PROCEDURE FOR BOILER WITH
INTERMITTENT PILOT SYSTEM
For Your Safety, Read Before Operating!!
1. A. This appliance is equipped with an ignition device
which automatically lights the pilot. Do not try to light the
appliance by hand.
2. 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 electrical switches; do not
use any phones 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, call
the fire department.
C. Use only your hand to push in or turn the gas control
knob. Never use tools. If the knob will not push in or 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 gas control which has been under
water.

LIGHTING INSTRUCTIONS

! WARNING
CAUTION
Subject to change without notice.
! WARNING
OPERATING INSTRUCTIONS FOR INTERMITTENT
1. STOP! Read the safety information in the User's Informa-
tion Manual.
2. Set the thermostat to lowest setting.
3. Turn off all electric power to the appliance.
4. This appliance is equipped with an ignition device which
automatically lights the pilot. Do not try to light the pilot by
hand. (Figure #14)
INLET
5. Turn gas control knob clockwise
6. Wait (5) minutes to clear out any gas. If you then smell
gas, STOP! Follow "What To Do If You Smell Gas" in the
safety information above. If you don't smell gas, go on to
the next step.
7. Turn gas control knob counterclockwise
8. Turn on all electric power to the appliance.
9. Set thermostat to desired setting.
10. If the appliance will not operate, follow the instructions
"To Turn Off Gas To Appliance" and call a qualified
service technician or your gas supplier.
16
PILOT SYSTEM
Figure #14
OUTLET
to "OFF."
to "ON."