DELTA-THERM
Corporation, P.O. Box 345, Wauconda IL, 60084 (847) 526-2407 Fax (847) 526-4456
(800) 526-7887
1
Installation Instructions
UDG-4999 THERMosTAT
The UDG-4999 thermostat is an “all-in-one” programmable
thermostat for electric in-floor heating control.
PRECAUTIONS
Turn off the power to the heating system at the main
•
power panel to avoid electrical shock.
Install
•
in compliance with the National and/or Local Elec-
trical Code. The UDG-4999 thermostat is equipped with
a ground fault circuit interrupter (GFCI, Class A), which
requires that the line and load be isolated from each other
for correct operation.
The resistive load must not exceed 15A (1800 W at 120
•
VAC, 3120 W at 208 VAC, 3600 W at 240 VAC).
1. lOCATION
Locate the thermostat on the wall with free air circulation
about 62” (1.6m) above the floor. Do not mount thermostat in
direct sunlight. Refer to Detail 1.
2. INSTAllINg ThE ThERmISTOR IN ThE flOOR
The UDG-4999 thermistor is used for temperature regulation
of in-floor heating systems. Install the thermistor in a piece
of 1/2” thin walled metal conduit, and place between heating
cable runs. Refer to Detail 2.
If required, the thermistor cable can be extended up to 328’
(100m).
3. ThERmOSTAT CONNECTION
Incoming Power Wiring
Delivers power from the service panel (breaker panel or
fuse box) to the UDG-4999 thermostat. Connect line voltage
wiring to the terminals (marked L1 and L2).
Cold lead Wiring
Delivers power from the UDG-4999 thermostat to the heating
cable. Connect cold lead wiring to the load terminals (marked
load and 15A).
Remove cover (open lock with a Phillips head screwdriver).
1.
Connect wiring according to the directions above and
2.
diagram on back of UDG-4999. Refer to Detail 3.
4. ThERmISTOR CONNECTION
Bring thermistor wire through the slot and connect to terminals
marked “IN/SENSOR”, terminals C and D. Refer to Detail 4.
5. mOUNTINg ThE ThERmOSTAT
Mount the UDG-4999 in the junction box, located on the wall.
Carefully replace the front cover by first positioning its upper
edge and then clicking it into place.
Detail 2.
Install thermistor between two cable runs.
62”
Detail 4.
UDG-4999 thermistor connection.
1
2
3
4
L1(L)
L2(N)
LINE
120 / 240 VAC
LOAD
1800W / 3600W MAX 15A
5“
2“
2“
2“
2“
2“
2“
Thermistor
in conduit.
Detail 1.
Do not mount thermostat in direct sunlight.
Detail 3.
Remove cover and connect wiring.
