General Instructions - UTICA BOILERS MGB Series User's Information Manual

11. Turn gas control knob counterclockwise
"ON."
12. Replace access panel.
13. Turn on all electric power to the appliance.
14. Set thermostat to desired setting.
Before seasonal start-up, have a qualifi ed service agency
check the boiler for soot and scale in the fl ues, clean
the burners and check the gas input rate to maintain
high operating effi ciency.
Label all wires prior to disconnection when
!
servicing controls. Wiring errors can cause
improper and dangerous operation.
Verify proper operation after service.
The service agency or owner should make certain the
system is fi lled with water to minimum pressure and
open air vents, if used, to expel any air that may have
accumulated in the system. Check the entire piping
system and, if any leaks appear, have them repaired.
Figure 4 - Circulator
Many circulators like the one pictured in Figure 4
(above) require periodic servicing. The motor usually
has openings at each end to lubricate the bearings.
LIGHTING INSTRUCTIONS

GENERAL INSTRUCTIONS

CAUTION
to 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. Push in gas control knob slightly and turn
clockwise
Note Some gas control knobs cannot be turned
from "PILOT" to "OFF" unless knob is pushed in
slightly. DO NOT FORCE.
4. Replace access panel.
Put about one half teaspoon of SAE 20 or 30 non-
detergent motor oil in each opening twice a year.
!
Do Not Over Oil!!
Many circulators have an oil opening for the shaft
bearing. This should be oiled at the same time for quiet
operation. Follow the manufacturer's instructions for
oiling the shaft bearing.
The venting system should be inspected at the start
of each heating season. Check the vent pipe from the
boiler to the chimney for signs of deterioration by rust
or sagging joints. Repair if necessary. Remove the
vent pipe at the base of the chimney or fl ue and using
a mirror, check vent for obstruction and make certain
the vent is in good working order.
Figure 5 - Boiler Flue Gas Passageways
Intergral Draft
Hood
Burner
Door
Burners
Orifi ces
5
to "OFF." DO NOT FORCE.
CAUTION
Base
Jacket Base
Panel
Blocked Vent
Safety Switch
Rollout Switch
4 Section Boiler
Rollout Switch
2,3,5,6,7
Section Boiler