Operating Instructions; Safety Information; To Turn Off Gas To The Appliance; For Your Safety Read Before Operating - Weil-McLain ULTRA ULTRA-105 Service Manual

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GAS FIRED WATER BOILER SERIES
Startup
(continued)

FOR YOUR SAFETY READ BEFORE OPERATING

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. See
below.
in your building.
1. Stop! Read the safety information above.
This appliance is equipped with an ignition
device which automatically lights the burner.
Do not try to light the burner by hand.
2. Set room thermostat(s) to lowest setting.
Verify external manual gas valve is open
(valve handle parallel to gas piping).
3. Turn OFF POWER switch on the Ultra con-
trol panel.
4. Rotate two thumb screws at bottom of access
door counterclockwise to release door.
5. Remove boiler access door.
6. Turn boiler manual gas valve knob counter-
clockwise to open gas supply.
7. Smell for gas in the boiler enclosure. If you
smell gas, STOP! Follow "B" in the safety
information above. If you don't smell gas,
go to the next step.
8. Turn ON POWER switch on the Ultra control
1. Set room thermostats to lowest setting.
2. Turn off all electric power to the boiler if service is to be
performed. Turn OFF POWER switch on the Ultra control
panel.
8
1 & 2
(Read page 7 and the Ultra Boiler Manual before proceeding.)
If you do not follow these instructions exactly, a fire or explosion may result
causing property damage, personal injury or loss of life.

WHAT TO DO IF YOU SMELL GAS

OPERATING INSTRUCTIONS

9. Set thermostat(s) to desired setting.
10. The Ultra control panel display left digit
11. If the appliance will not operate when
12. Re-install jacket front panel. Make sure

TO TURN OFF GAS TO THE APPLIANCE

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C. Use only your hand to turn the gas control knob. Never use
tools. If the knob will not turn by hand, don't try to repair
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.
Follow the gas supplier's instructions.
ment.
panel.
will show a sequence of numbers (0, 1, 2,
etc.) that indicate boiler control sequence.
Digit 3 or 4 indicates boiler is firing. Digit 0
means there is no call for heat (all room
thermostats and domestic water heater
satisfied).
there is a call for heat and piping is not hot,
follow the instructions "To Turn Off Gas
To Appliance" below and call your service
technician or gas supplier.
panel is seated firmly in place and all joints
are visually sealed. Then tighten the two
thumb screws at bottom of access door
firmly.
3. Close external manual gas cock (valve handle perpendicu-
lar to gas piping). Remove boiler access door. Turn boiler
manual gas valve knob clockwise to close gas supply.
4. Re-install boiler access door.
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Part number 550-100-029/0810