Precision Control Systems PanelIR 4555 - Manual (Page 23)

Model 4555 PanelIR TM User Manual Installation
Wiring Thermostat
Figure 3-8 Thermostat wiring
Pressure Switch Wiring
Figure 3-9 Pressure Switch
Thermostat, and
Blower Wiring
A thermostat is mounted to the backside of the Model 4555 air plenum inside the heater
body (Figure 3-8). The thermostat is a feature of the model 4555 that safeguards the
heater from overheating. The thermostat is rated for 120 volt 15 amp service. When
properly wired to the heater power control system, the thermostat will trip if it reaches a
temperature of 180° F (82° C) resulting in loss of power to the heater if wired to operate
in this configuration. The thermostat will reset after it cools below a temperature of
150° F (66° C). The thermostat is wired to terminal blocks 1-2 (Figures 3-9,10).
Thermostat
Blowers
A pressure switch is mounted to the fan bracket inside the heater body (Figure 3-7).
The pressure switch is a feature of the Model 4555 that safe guards the heater from loss
of cooling air. The pressure switch is rated for 24 VDC, 20-ma service. When properly
wired to the heater power control system, the pressure switch will trip if the heater body
losses pressure due to blower stoppage or intake clogging, resulting in loss of power to
the heater. The pressure switch will reset when blower function resumes. The Pressure
switch is wired to terminal blocks 3-4 (Figures 3-9,10).
Pressure Switch
Terminal Blocks
Research, Inc. 20