Robertshaw 300-204 - Manual (Page 2)

INSTALLATION INSTRUCTIONS (CONT)
6. Connect the wires from your system to the thermostat termi-
nals. Carefully dress the wires so that any excess is pushed
back into the wall cavity or junction box. Ensure that the wires
are flush to the plastic subbase. The access hole should be
sealed or stuffed to prevent drafts from the wall affecting the
thermostat.
REPLACING THE THERMOSTAT ON SUBBASE
1. Position the thermostat on the
hinged tabs at the top of the
subbase.
2. Gently swing the thermostat
down and press on the bottom
center until it snaps into place.
THERMOSTAT COVER LOCK
You may lock the cover down to
prevent unauthorized access to
the thermostat by adding the clear
plastic lock (included in the instal-
lation bag.) Insert the plastic lock
piece into the bottom of the
mounted base. The ends of the
lock piece fit snugly under the
lock pins extending from the bot-
tom of the mounted base. The tab
in the middle of the lock piece
extends down from the base.
To release the locking mechanism,
press the lock piece up and into
the base while gently prying open.
THERMISTOR MOUNTING INSTRUCTIONS
Outside rear view with backplate closed
WIRING DIAGRAM
TERMINAL AND SWITCH DESIGNATIONS
RH .............24 VAC from transformer equipment
W ...............Energizes on a call for heat
DIP SWITCH OPTIONS
Located on the back of the thermostat, once the subbase is
removed.
Switch #1 – Allows for a 4-minute or 2-minute minimum on/off time.
Switch #2 – Allows for the keypad to be locked or unlocked.
SPECIFICATIONS
Rated Voltage 20-30 VAC, 24 nominal
Rated Current 0.08 Amps to 1.5 Amps continuous per
output with surges to 4 Amps max.
Control Heating: 38° to 88°F in 1° Steps
Range 5° to 30°C in 1° Steps
Thermostat
Measurement Range
28° to 124°F or 0° to 48°C
O.D.T. Displayed
Range
-50° to 119°F or -48° to 47°C
Control Accuracy ±0.5°C at 20°C, ±1°F at 68°F
300-204
W
RH
4 min. (on/off) 2 min. (on/off)
Unlocked Locked
1
2
RH
24 VAC
Transformer
Line
Voltage
W1 W