59
110331-07 - 8/23
PHTM II
Combi Installation, Operating & Service Instructions
16
Operation
(continued)
Table 16-11: Menu
AA
, Quick Menu (items
A06
,
A07
,
A08
and
A09
visible only after password entered)
Default
Range/
Choices
Parameter and Description
On
On/Off
A01
A01
Boiler On/Off Switch
Boiler switch allows an installer to prevent boiler starts while boiler powered and reviewing boiler
settings. Control is factory set with boiler switch in "On" position.
Off
On/Off
A02
A02
Recirculation (Comfort) Mode
Recirculation (Comfort) Mode may be used to keep DHW water warm that is immediately available
at fixtures. A recirculation piping system that supplies water to fixtures and then back to boiler
is required to use this feature. This feature requires a recirculation sensor wired to the "Header
Sensor" terminals, and a recirculation pump wired to the "Aux Pump" terminals. Refer to Figure 11-3
for more information about piping requirements and additional parameter adjustments.
On
Comfort Mode Icon is displayed on local user display. "Aux Pump" output is energized
to run a Recirculation pump based on "Aux T'stat" Input (Recirculation enable) terminal
status.
Off
Comfort Mode is disabled.
120°F
60°F - 150°F
(16°C - 60°F)
A03
A03
DHW Setpoint
Desired DHW temperature produced by boiler.
180°F
83°C
60°F - 190°F
(16°C - 88°C)
A04
A04
Central Heat 1 Setpoint
Desired water temperature of CH1.
180°F
83°C
60°F - 190°F
(16°C - 88°C)
A05
A05
Central Heat 2 Setpoint
Desired water temperature of CH2.
0
0, 1
A06
A06
Fuel Gas Selection
(visible only after password entered):
Boiler is shipped from factory configured for natural gas. Conversion to LP Gas requires 2 steps:
•
changing this parameter to (1) LP Gas
AND
•
changing gas valve setting from position "1" to position "2" . If conversion to LP Gas is required,
refer to manual Section 15 Startup and Checkout for complete instructions.
(0)
Natural Gas
(1)
LP Gas
0
0
A07
A07
Altitude Selection
(visible only after password entered):
Boiler is shipped from factory configured for sea level (0 to 2,000 ft. / 0 to 610 m).
(0)
0 to 2,000 ft. (0 to 610 m)
(1)
2,001 to 6,000 ft. (611 m to 1,828 m)
(2)
6,001 to 8,000 ft. (1,829 m to 2,438 m
(3)
8,001 to 10,100 ft. (2,439 m to 3,079 m)
Off
On/Off
A08
A08
Calibrate
(visible only after password entered):
Setting to "On" enables a manual calibration to be attempted at next boiler start. For immediate
calibration cycle CH demand or cycle
A01
Burner On/Off Switch.
On
Manual calibration is requested.
Off
Manual calibration is not requested.
29
13-46
A09
A09
Gas Valve Offset
(visible only after password entered):
Gas valve offset is set automatically during calibration. When replacing an old gas valve with a new
gas valve, it is possible boiler will not start unless this value is changed. For this situation, set Gas
Valve Offset to 30 to allow the boiler to start.
Off
On/Off
A10
A10
Factory Default
(visible only after password entered):
Returns all parameters back to the original factory default.
Must be set after a repair control is installed.
On
Set all parameter values to Factory Default value.
Off
No action
