Utica Boilers UB90-100 インストール手順

• Integrated Boiler Control (IBC) is a microprocessor 

based controller for high effi ciency gas boilers. 

• Controller monitors all safety controls which control 

operation of combustion air blower, circulator pump, 

burner, and combination hot surface igniter/fl ame 

sensor. 

• Controller is not intended for use with vent damper. 

Controller is mounted on control panel inside boiler. 

Contains fi ve diagnostic indicator lights.

Maximum set-point of limit control must not exceed  

190°F.

• High limit control determines maximum boiler water 

temperature and provides means for protecting boiler 

and heating system from unsafe operating conditions 

which could damage boiler. 

• Control is mounted in ¾” NPT control well on top of front 

boiler section at hot water outlet. 

• Control is tied in with IBC and factory set at 190°F water 

temperature. 

• High limit set-point is fi eld adjustable and may be set 

between 100°F and 190°F. 

• Field set-point adjustment for each installation depends 

on heating system requirements. 

• Differentials are automatic, vary based on control 

settings and boiler temperature.

• Refer to limit manufacturer instructions provided with 

limit control.

To adjust, turn HI TEMP dial

 

 

until desired setting 

is displayed. Overall range of High limit setting is from 

100°F to 220°F (82° C to 104° C).  High limit (HL) on limit 

control is factory set at 190°F. Temperature setting may be 

varied to suit requirements of installation. Differentials are 

automatic and will vary based on control settings and boiler 
temperature. See Figure 23.

• Economy feature is factory set for 1 zone heating 

system. To adjust, turn ECONOMY dial until number 

displayed equals number of heating zones. 

• Do not include indirect water heaters in number of 

heating zones.

• Economy feature conserves fuel by reducing boiler 

temperature.  If heating system is unable to supply 

needed heat to house, ECONOMY dial should be turned 

to lower setting. (example: in a three zone house, turn 

dial to 2 or 1). 

• Conversely, if boiler provides adequate heat, added 

fuel savings can be achieved by selecting higher setting 

(example: 4 or 5).  

• If heating and indirect water heater signals were not 

separated when wiring the control, Economy feature 

should be turned off to ensure the boiler supplies 

adequate temperature to heat indirect tank.