Utica Boilers UB95M-200 Installation Instruction

Connect room thermostat or end switch (isolated 

contact only) between terminals T1 and T2.

Install thermostat on inside wall away from influences 

of drafts, hot or cold water pipes, lighting fixtures, 

televisions, sun rays, or fireplaces.

Thermostat anticipator (if applicable)

A.  Set for 0.1 amps if connected directly to boiler.

B.  Set to match total electrical power requirements of 

connected devices if connected to relays or other 

devices. See device manufacturers’ specifications 

and thermostat instructions for details.

Connect outdoor temperature sensor between terminals 

A1 and A2 to enable outdoor reset operation of the 

boiler. If fixed temperature operation is required, do 

not install outdoor sensor.

Mount sensor on exterior wall, shielded from direct  

sunlight or flow of heat or cooling from other sources.

If desired, install a summer/winter switch across 

terminals A1 and A2. When the switch is closed, the 

boiler (space heating) circulator is disabled.

Route sensor wires through the holes provided on the 
right jacket panel of the boiler.

Connect storage indirect water heater (DHW) limit control 

between terminals DHW T1 and DHW T2.

See Piping and Wiring Appendix for wiring and piping 

diagrams.

Corners
Alcoves
Behind doors

Concealed pipes or ducts
Stairwells - drafts
Unheated rooms on the other side 

of the wall

Concealed pipes
Fireplaces
TVs or radios
Lamps
Direct sunlight
Kitchens