69-0791—34

QUALITY IS KEY

Home and Building Control Home and Building Control Helping You Control Your World

Honeywell Inc. Honeywell Limited—Honeywell Limitée

1985 Douglas Drive North 740 Ellesmere Road

Golden Valley, MN 55422 Scarborough, Ontario

M1P 2V9

Printed in U.S.A.

Fig. 8—R845A hookup for controlling two loads.

L1
HOTL2
TT
21 34
1
1
TO
POWER
LOW VOLTAGE (CLASS 2)
2-WIRE THERMOSTAT
R845A
POWER SUPPLY. PROVIDE OVERLOAD PROTECTION
AND DISCONNECT MEANS AS REQUIRED.
WHEN CONTROLLING TWO LOADS, USE 3 AND 4
FOR LINE VOLTAGE LOAD AND 5 AND 6 FOR LINE
OR LOW VOLTAGE LOAD.
IF USING LOW VOLTAGE, USE A SEPARATE
TRANSFORMER.
2
M3820
65
LOAD 1
TO
POWER LOAD 2
1 1
2
3
3

Fig. 9—Internal schematics and hookup for

R847A.

Fig. 10—Internal view of RA832A Switching

Relay.

M3824
24V TRANSFORMER
RELAY
12
34
T
T
X
X
L1
(HOT)
L2
TT
L2 L1 34
1
1
TO
POWER
LOW VOLTAGE (CLASS 2)
2-WIRE THERMOSTAT
R847A
POWER SUPPLY. PROVIDE OVERLOAD PROTECTION
AND DISCONNECT MEANS AS REQUIRED.
WHEN CONTROLLING TWO LOADS, USE 3 AND 4
FOR LINE VOLTAGE LOAD AND 5 AND 6 FOR LINE
OR LOW VOLTAGE LOAD.
IF USING LOW VOLTAGE, USE A SEPARATE
TRANSFORMER.
10 AMP CONTACT RATING OR 20 AMP WHEN POLES
ARE CONNECTED IN PARALLEL.
2
M8231B
67
LOAD 1
TO
POWER LOAD 2
1 1
2
3
44
3
4
Service and Checkout

1. Never use oil on any part of the relay coil or contacts.

2. Keep the cover on the relay during normal operation

and remove only for service and checkout.

3. Relay contacts require no cleaning; they are arranged

so they close with a wiping action and are self-cleaning.

The contacts may turn black after being in service for some

time; this discoloration does not prevent proper operation.

4. After installation is complete, operate system through

at least one cycle from the controller to make certain the

relay controls the equipment as intended.