Utica Boilers UB95M-200 Instrução De Instalação

• [1180] Post-purge. When room thermostat is satisfied 

(call for heat ended), burner turns off. Blower continues 

for 15-second post-purge, then turns off. If another 

call for heat occurs,  boiler remains off for ten seconds 

before starting again, and display shows [6180].

• [0180] No call for heat. Boiler is in standby mode 

(waiting for heat call).

Repeat steps 1-6 several times to verify operation.

Return room thermostat to normal setting.

If necessary, reconnect DHW aquastat wiring to boiler.

Turn off power to boiler at service switch.

Wait few seconds, turn on power to boiler.
[A150]

 

Self-check on power-up for a few seconds.

[0150]  No call for heat.

Raise DHW aquastat above tank temperature to call for 

heat.

• [5150] Blower/DHW circulator on. Blower and DHW 

circulator energize and control checks for air flow.

• [1150] Pre-purge. Blower speed increases to ignition 

speed. Blower runs in pre-purge for 10 seconds.

• [2150] Ignition. After pre-purge, control module opens 

gas valve and starts ignition spark.

• If burner flame proves within 4.5 seconds, burner 

continues to fire. Burner fires at startup rate for about 

10 seconds to allow flame to stabilize.

• If burner flame does not prove within 4.5 seconds, 

control module attempts ignition sequence again. 

Flame must prove within 5 attempts or control will 

lockout (display will show [E 02]).

• Verify flame failure operation by closing boiler manual 

gas valve to prevent gas flow. Open gas valve after 

testing.

• [4150] Burner on, DHW. Once flame is proven and 

stable, burner is allowed to modulate. Firing rate 

depends on actual outlet water temperature versus 

target temperature.

Allow boiler to bring water temperature to target 

temperature.

• [6150] Target temperature reached. Burner shuts 

down. Blower runs in post-purge, then turns off. DHW 

circulator continues to run as long as there is call for 

DHW heating.

Lower DHW aquastat to stop call for heat.

• [1150] Post-purge. When room thermostat is satisfied 

(call for heat ended), burner turns off. Blower continues 

for 15 second post-purge, then turns off. If another 

DHW heat call occurs, boiler begins heating cycle after 

10 second delay. If CH call for heat occurs after DHW 

demand, heating cycle begins after 30 second delay.  

• [8150] DHW circulator run-on. DHW circulator 

continues to run for 30 seconds.

• [0150] No call for heat. Boiler is now in standby mode 

(waiting for heat call).

Repeat steps 1-6 several times to verify operation.

Return DHW aquastat to normal setting.

To check operating conditions (Ex - actual or target 

temperature), see “User Interface Quick Reference” 

Section 10 page 21, for explanation of boiler control’s 

“Information” mode.

During normal operation (no shutdown or lockout), 

right 3 display digits show actual boiler outlet water 

temperature.

Complete “Checkout Procedures and Adjustments” as 

indicated in Section 6 page 9.
Replace boiler front jacket panel after performing any service 

to boiler.