Reznor YDSA Operation Manual - Manual (Page 4)

Form O-Y, PN 273647R1, Page 4
2.0 Maintenance Requirements (cont'd)
2.2 Control Locations
FIGURE 1 -
Access Doors
and High and
Low Voltage
Control
Locations
Electrical / Control
Compartments
(See below.)
Optional Gas or
Electric Heat Section
Coil and
Filter Access
Condenser Fans
Supply
Fan
Access
Inlet Air
Hood
Optional
Wheel Access
Damper Access
Condenser
Section
LOW VOLTAGE PANEL
* Optional Dirty Filter
Pressure Switch (1 or 2)
Optional Exhaust Airflow
Pressure Switch
High Side Tubing - Yellow
Low Side Tubing - Clear
Relays
Thermostat Terminal Strip
Supply Air
Pressure Switch
High Side Tubing - Blue
Low Side Tubing - Clear
Carel Controller
Optional Pressure
Sensor Transducer
(tubing is field supplied)
* Dirty Filter Switch for
System Filters (BE18)
High Side Tubing - Red
Low Side Tubing - Clear
Dirty Filter Switch for
Wheel Filters (BE28)
High Side Tubing - Green
Low Side Tubing - Clear
Optional
Low
Ambient
Controller
- ECM
Condenser
Fan
Optional
Low
Ambient
Controller
- Std
Condenser
Fan
HIGH VOLTAGE CONTROL PANEL
High Voltage Bus Bar
- Compressor & Condenser
Contactors
- 3-Phase Supply Wire
Connections
- Optional Phase
Loss Monitor
- Optional Power
Exhaust Contactor
- Optional Energy
Wheel Contactor
- Optional Energy Wheel
Preheat Contactor
Transformers 75 VA
Compressor
Controllers (by circuit)
A
Capacitors
1
4
3
2
Contactors
B
Cond
B
Comp DH
Comp
A
Cond
A
Comp
VFD
VFD Line
Reactor
Fuse Blocks
Opt
DH
Electric Heat Only
Fuse Blocks
SCR
Controller
Contactors
1
2
4
3
Gas Heat Section Controls
Ignition controller and combustion air pressure
switch are located on the side wall next to the
gas manifold and burner. See FIGURE 23, page
32.