SE
R
V
ICE
ACCESS
P
A
NE
L
CONTROLS & GAS
V
A
L
V
E COMP
ARTMEN
T
1.
Disconnect gas & electricit
y.
2.
Remove four (4) thumbscrews.
3.
Remove top cover
.
4.
Swing hinged panel downward.
K
E
E
P
COVER IN PLACE. REMOVE FOR SE
R
V
ICE ON
LY
.
SER
VICE
ACCESS
P
A
NE
L
F
A
N COMP
ARTMEN
T
1.
Disconnect gas & electricity
.
2.
Remove top cover (2 thumbscrews).
3.
Remove tsix (6) 1/4” screws.
4.
Lift and remove panel
.
K
E
E
P
COVER IN PLACE. REMOVE FOR SE
R
V
IC
E
O
N
LY
.
1.0
Safety
F/N: LLTCL001L, C, R
Clearance to Combustibles Labels
NEUTRAL
EARTH
HOT
- 120V HEATER INPUT -
120V
3
DES3
Series
Safety Labels and Their Locations
1.0
Safety • Safety Labels and Locations
Back Panel
Top Panel
Bottom Panel
F/N: LLTB018
(Natural Gas)
F/N: LLTB019
(LP Gas)
F/N: LLLOGO1 Logo Label
Product safety signs or labels should be replaced by the product user when they no longer are legible.
Contact either your local distributor or the product manufacturer for obtaining replacement signs or labels.
F/N: LLV3EP1
NEUTRAL
EARTH
HOT
- 120V HEATER INPUT -
120V
HIGH
FIRE
H
LOW
NEUTRAL
HIGH
24V
- 24V HEATER INPUT -
F/N: LLAC
Air Metering Orifice
Air Metering Orifice
DO NOT REMOVE
TP-114
TP-3014
1 - 1/2"
SAMPLE
Read and understand all safety information and warnings in this insert manual and the
Tube Heater General Manual before installation, operation and maintenance of the
radiant tube heater system.
