Bryant P474-0401RF User's Information Manual page 19

Programmable digital thermostat
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About Advanced Features & Operation
TWO-WIRE THERMOSTAT
INSTALLATION WIRING
Two-Wire Thermostat
L
L
R
W1
Resistor
(If Required)
C
HVAC Equipment
If the Two-Wire thermostat is losing time or
showing PF or P- it may be neccessary to
install the 10 watt 250 ohm resistor that
is supplied with the thermostat.
Page 18

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