Installation Guide

INSTALLATION INSTRUCTIONS
69-2041
R182J, R482J, YHR845A,R847A, RA89A,
RA832A Switching Relays
These relays can be used for a variety of switching applications. Typically they provide control of line- or low-voltage
devices by a low voltage controller. See Table 1.
a
IMPORTANT:
The transformer on the R182 can overheat
when used with a series 20 thermostat if the
total resistance of the thermostat circuit
exceeds 2.5 ohms. If the measured resistance
of the thermostat (including thermostat wire and
thermostat contact resistance) exceeds 2.5
ohms, add a 100 ohm, 10 watt resistor between
the W and R terminals. Table 2 gives maximum
thermostat wire runs; if longer runs are neces-
sary, measure the resistance or add a 100 ohm,
10 watt resistor across terminals W and R.
Table 1. Switching Relay Specifications.
Models Application
Voltage
(50/60 Hz)
Switch
Action
Control
Circuit
Coil
Voltage
(Vac at
50/60 Hz)
Relay Coil
Current (A)
Contact
Ratings (A)
AFL ALR
R182J For 24V thermostat control of
line voltage devices.
120 Dpdt 3-wire 24
0.40
a
7.4 44.4
240 3.7 22.2
R482J Controlled by a line voltage
controller.
120 2-wire 120 0.08 7.4 44.4
208/240 208/240 0.04 3.7 22.2
YHR845A For hot water zone control
systems or spst control of
two separate loads.
120 Dpst 24 0.40 7.4 44.4
R847A Provides switching for high-
current loads such as cooling
compressors.
120 22 100
240 10 50
RA89A For switching one line
voltage load.
120 Spst 10.2 61.2
RA832A For switching two line load
voltage loads with a common
power source.
120 Dpst 7.4 44.4
240 3.7 22.2
Table 2. Length of Wire.
AWG
Wire
Size
(Number)
Total Wire
Length
Length of Run to
Thermostat
(Wires)
Feet Meters Feet Meters
22 120 38.0 60 18.0
20 200 61.0 100 30.5
18 300 91.5 150 45.5
16 500 152.5 250 76.0
14 800 244.0 400 122.0