“Quick Start” Guide
IMPORTANT PRE-START CHECKS: Follow boiler fill (and other) instructions in the ALTA Boiler Installation, Operating and Service instructions
(I,O&S). Inspect all water lines, gas lines, wiring, venting and associated connections. Follow instructions to purge all air from the heat
exchanger and system piping with the hose provided. Do not install any boiler SKU ending with “02” over 2,000 ft. (610m) altitude. (Example:
ALTA-120-1G02). Only boiler SKUs with -00 suffixes may be installed at altitudes between 2,000 ft. (610m) and 10,100 ft. (3,079m) -
Example: ALTA-120-1G00.
TIME-SAVING NOTE: Gas valve throttle screw and offset adjustments are not required for start up. This boiler adapts to heating requirements with a
self-calibrating, “gas adaptive” control that monitors flame ionization to automatically adjust the gas valve to a correct air-fuel ratio.
Start a call for central heat (CH) and
observe the display.
NOTE: Boiler fires ten seconds after CH call.
If it does not light after two tries, the boiler
will enter a “soft lockout” for one hour. For
fast reset:
• Interrupt power for three seconds
• Re-connect power and restart
• Press button to reset
• Watch for flame icon
During CH call
(While running)
1.
2.
Check gas pressure at valve inlet test port.
Verify that the inlet gas pressure is between the
minimum and maximum gas pressures shown on
the rating plate when operating at maximum gas
input rate and when all gas appliances (including
the boiler) are both on and off.
GAS PRESSURE REQUIREMENTS (0-2,000 ft. only)
Max: 14.0 in.wc
Min: 2.5 in.wc (natural gas), 8.0 in.wc (L.P. gas)
4.
Safety Check: Ignition Safety Shut-Off
• When boiler is running, carefully unplug black electrode/
flame sensor wire at burner door using insulated pliers
• The burner should shut off immediately
• Reconnect black electrode/flame sensor wire
3.
Safety Check: Combustion
• Verify boiler is running over 50% firing rate
• Close boiler front door and wait five minutes
• Insert combustion analyzer probe into test port
• Measure carbon monoxide (CO)
• If CO is under 200ppm, combustion check is complete
• If CO exceeds 200ppm, follow troublehooting in I,O&S
• Replace test port cap into test port
Without a CH call
(Stand-by)
Flame icon appears
last, after start up
protocol is complete
and after boiler is
running.
reset lockout
Model ALTA-120, ALTA-150, ALTA-180
High Efficiency Condensing Boiler
Press
buttons
to adjust
parameters
+
–
Press
buttons to
view next
menu or
parameter
Press and hold for three seconds
to access Adjust Mode
Press to select menu
or parameter to edit
Press to exit current menu or
cancel current editing session
Quick Menu and Commands
See separate instruction card 110493-(XX) for these additional advanced menus:
Password, History, Diagnostic, Firing Rate, Setpoints, Pump, Lead/Lag
When not flashing or alternating, this
temperature is:
• DHW outlet temperature during DHW priority
• Boiler supply temperature at all other times
Visible when Central Heating demand is
present
Visible when DHW heating demand is present,
icon will flash if DHW setpoint is being
adjusted
Visible when burner is firing, icon adjacent to
active priority
Visible when Central Heating setpoint reset is
enabled
Visible when adjust mode is active, icon will
flash if manual mode is enabled
Visible when manual reset lockout is active
+
–
A
Quick Menu
Default
a01
Boiler Switch:
On/Off
On
a02
DHW Comfort Mode:
On/Off*
Off
a03
DHW Setpoint:
(60°F to 140°F, 16°C to 60°C)
120°F
49°C
a04
Central Heat 1 Setpoint:
(60°F to 190°F, 16°C to 88°C)
180°F
83°C
a05
Central Heat 2 Setpoint:
(60°F to 190°F, 16°C to 88°C)
180°F
83°C
*DHW comfort mode not available on heating-only boilers
