Gas Train
(Burner Subassembly)
Burner Subassembly
The burner subassembly consists of the gas train with its controls, valves, pressure regulator, burner(s), and combustion chamber. The primary gas connection to the gas train is made through the side wall grommet into the
Control Center
The control center is located on the end of the unit, directly above the gas train access door. The control center contains electronic components and some elctromechanical devices that monitor and control the operation of the entire unit. A
High voltage supply wiring terminates at a manual on/off switch located on the face or the side of the unit, adjacent to the control center.
Low voltage control wiring from the building terminates on the terminal strips.
Manual High Voltage
On/Off Switch
with Lockout
Dampers
There are four locations where optional dampers may be found. An optional motorized intake damper may be located horizontally on the bottom of the burner section. A patented passive control damper may be found adjacent to the burner opening plates if a VAV is ordered and a motorized damper may be installed vertically on the side of the burner section if recirculating air mode is chosen. In addition, an outlet damper may be shipped with the unit for field installation.
Optional
Outlet Damper
Optional Motorized
Recirculating Damper
Passive Control Damper
Optional Motorized
Intake Damper
6Model VSU
®