Outdoor Sensor (Optional); Indirect Sensor (Optional); 0-10 Volt Building Control Signal (Optional) - Pioneer PHR100-55 Instruction Manual

2. Mount the thermostat on an inside wall as centrally to the area being heated as possible, but away
from drafts or heat producing devices such as television sets that could influence the ability of the
thermostat to measure room temperature.
3. If the thermostat is equipped with an anticipator and it is connected directly to the heater, the
anticipator should be set at .1 amps. If the thermostat is connected to other devices, the anticipator
should be set to match the power requirements of those devices. See the instruction manual of connected
devices for further information.
E. OUTDOOR SENSOR (OPTIONAL)
1. If an HTP 7250P-319 outdoor sensor is not used in this installation, move on to Section F.
2. Use a minimum 22 AWG wire for runs of 100 feet or less and minimum 18 AWG wire for runs of up to
150 feet.
3. Mount the outdoor sensor on an exterior surface of the building, preferably on the north side in an area
that will not be affected by direct sunlight and will be exposed to varying weather conditions.
NOTE: Follow instructions provided with the sensor for detailed mounting instructions.
4. When correctly mounted, connect sensor to terminals marked 12 and 13.
F. INDIRECT SENSOR (OPTIONAL)
1. If an indirect water tank is not used in the installation, move on to Section G.
2. The heater will operate an indirect fired water tank with either a thermostat type aquastat installed in
the indirect tank or an HTP 7250P-325 tank sensor. When a tank sensor is used, the heater control will
automatically detect its presence and a demand for heat from the indirect water tank will be generated
when the tank temperature falls below the user set point by more than the user selectable offset. Demand
will continue until the sensor measures that the indirect water tank temperature is above the set point.
Connect the indirect tank sensor (7250P-325) or mechanical aquastat to the terminals marked 10 and 11
on the field connection board.
G. 0-10 VOLT BUILDING CONTROL SIGNAL (OPTIONAL)
1. If a 0-10 volt building management system is not used in the installation, move on to Section H.
2. A signal from a building management system may be connected to the heater to enable remote control.
This signal should be a 0-10 volt positive-going DC signal.
3. When this input is enabled using the installer menu, a building control system can be used to control
either the set point temperature or the heat output of the heater. The control interprets the 0-10 volt signal
as follows; when the signal is between 0 and 1.5 volts, the heater will be in standby mode, not firing.
When the signal rises above 1.5 volts, a demand for heat is started. As the signal continues to rise
towards its maximum of 10 volts, the heater will increase either its set point temperature or firing rate
depending on the setting of function 17 in the installer menu. See Part 11 for details on the setting of
functions 16 and 17 for this option.
4. Connect a building management system or other auxiliary control signal to the terminals marked 16 (0-
10 VOLT +) and 17 (0-10 VOLT –) in the electrical junction box caution should be used to ensure that the
16 (0-10 VOLT +) connection does not become connected to ground.
43