resideo R8845U, Manual

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R8845U UNIVERSAL SWITCHING RELAY
68-0215—02 2
Dimensions: See Fig. 1.
Cross Reference: The R8845U replaces Resideo models
R182A,B,C,J; R482A,B,C,J; R845A, R882A,B,C,J and
RA832A, as well as several competitive models. See Table
1 for additional cross reference information.
Thermostat Compatibility: All Resideo electromechanical
and most electronic 2- or 3-wire. Select thermostats with
0.12A heating anticipator settings to match the electrical
rating of the R8845A Switching Relay.
Replacement Parts:
32002190-001 Replacement Relay.
Replacement Fuse: Use a 1A automotive fuse.
Table 1. R8845U Replacement Cross Reference.
Manufacturer Model
Connections
Comments
Input Line
Voltage
Power
Relay 1
Power
Relay 2
Line
Voltage
Relay Thermostat
Resideo R8845U L1 L2 COM N.O. A B X1 X2 W(T) R(T) C —
Resideo R845A 1 2 3 4 5 6 — — T T — —
RA832A 1 2 — 3 — 4 X X T T — Jumper L1 to COM and A in
R8845U.
R182A 1 2 7 8 — — — — See Fig. 8
thermostat
connections.
R8845U has lower output load
rating. Check load requirements.
use RA889A if normally closed
contacts are required.
R182B 1 3 6 8 — — — —
R182C 1 2 6 8 3 5 — —
R182J L1 L2 — 4 — 7 — — If used to replace an R182J, install
a jumper between L1, COM and A.
R482A 1 2 7 8 — — — — Jumper R(T) to
W(T).
Line voltage switched inputs go to
L1 and L2. See Fig. 9B.
R482B 1 2 6 8 — — — — Use R889A if normally closed
contacts are required. Line voltage
switched inputs go to L1 and L2.
See Fig. 9B.
R482C 1 2 6 8 3 5 — —
R482J 1 2 6 8 3 4 — —
R882A — — 7 8 — — — — W — B R8845U has lower output load
rating. Check load requirements.
R882B — — 6 8 — — — — W — B Use R889A if normally closed
contacts are required.
R882C — — 6 8 3 5 — — W — B
R882J — — 6 8 3 4 — — 1 — 2
Argo AR821 1 2 3 4 5 6 — — T T — R8845U has lower output load
rating. Check load requirements.
AR822 L1 L2 3 4
N.O.
5 6
N.O.
— — G(T) R(T) C Use R889A if normally closed
contacts are required.
Erie SR100A
T
L1 N 3 4
N.O.
5 6
N.O.
— — G(T) R(T) C
White-
Rogers
829-189 1 2 3 4 — — — — B R W R8845U has lower output load
ratings. Check load requirements.
829-832 1 2 — 4 — 3 X1 X2 T T —
Taco SR501 H N 3 4
N.O.
5 6
N.O.
— — W(T) R(T) C Use RA889A if normally closed
contacts are required.