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PHTM II
Installation, Operating & Service Instructions
15
Operation
(continued)
Table 15-13: Menu
5P
5P
,, Setpoint Menu (visible only after password entered)
Default
Range/
Choices
Parameter and Description
0
0, 1
501
501
Temperature Units
Sets display temperature in degrees Fahrenheit or Celsius.
(0) Fahrenheit
(1) Celsius
60
0 to 120
(minutes)
502
502
DHW Priority Time
When DHW Priority Time is greater than zero and DHW heat demand is present, DHW demand
has priority over heating demands for this specified time. After DHW demand ends or DHW Priority
Time is exceeded and CH demand is present, CH demand has priority over DHW demand.
130°F
54°C
50°F to 180°F
(10°C to 83°C)
503
503
Central Heat 1 Min Boiler Water Temp
Sets a low limit for Reset setpoint. Set this parameter to lowest supply water temperature that
will provide enough heat for type of radiation used to function properly. Always consider type of
radiation when adjusting this parameter.
130°F
54°C
50°F to 180°F
(10°C to 83°C)
504
504
Central Heat 2 Min Boiler Water Temp
Sets a low limit for Reset setpoint. Set this parameter to lowest supply water temperature that will
provide enough heat for type radiation used to function properly. Always consider type of radiation
when adjusting this parameter.
1
0, 1, 2
505
505
Auxiliary Thermostat Input Select:
May be used as "Indirect Water Heater (IWH) DHW demand" or "CH Zone 2 Heat demand" input.
(0) Recirculation Enable
Combi boilers only.
(1) DHW Demand
DHW heat demand may be wired to Auxiliary Thermostat Terminal.
(2) CH Zone 2 Thermostat Central Heat 2 heat demand may be wired to the Auxiliary
Thermostat Terminal.
Central Heat
Setpoint
Heating Element Type
Central Heat
Setpoint
Heating Element Type
180°F to 190°F
(82.2°C to 87.8°C)
Fan Coil
100°F to 140°F
(37.8°C to 60°C)
In Slab Radiant
High Mass Radiant
160°F to 190°F
(71.1°C to 87.8°C)
Convection
Baseboard
Fin Tube
Convective
130°F to 160°F
(54.4°C to 71.1°C)
Staple-up Radiant
Low Mass Radiant
130°F to 160°F
(54.4°C to 71.1°C)
Radiant
Baseboard
140°F to 160°F
(60°C to 71.1°C)
Radiators
Table 15-14: Radiation Setpoints
