Installation Manual

27
APPENDIX Q:
SNOW MELT DIAGRAM 208V - TYPICAL LINE DIAGRAM (FOR 6 CIRCUITS/CABLES) WITH SCA-DUAL
208V CIRCUITS
AIR-SS
LOW VOLTAGE (24V)
120V
SWITCHED
POWER
Heater cable 50ft cold leads to be taken through
3/4” (19mm) rigid metal conduit back to J-boxes.
Aerial mounted snow sensor location
as per the installer.
Installer may use more J-boxes
outside or inside building.
208V CIRCUITS
OutsideInside
208V
208V
208V
208V
208V
208V
J-BOX
J-BOX
HEATER CABLE / MAT #1
HEATER CABLE / MAT #2
HEATER CABLE / MAT #3
HEATER CABLE / MAT #4
HEATER CABLE / MAT #5
HEATER CABLE / MAT #6
SCA-DUAL
CONTROLLER
120/208 VAC
BREAKER PANEL
RLY-12P
RELAY PANEL
LOW
VOLTAGE
(24V)
REMOTE
CONTROL
OVERRIDE
120V
CONTROL
POWER
(conduit size as per installer / local code requirements)