Reznor YDSA Unit Installation Manual - Manual (Page 26)

Form I-Y, P/N 273646R6, Page 26
7.4 Electrical Compartment - Control Locations
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
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
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
Additional Controls for Gas Heat Section
- Ignition controller and combustion air
pressure switch are located on the side wall
next to the gas manifold and burner. See
FIGURE 25, page 52 in Paragraph 9.2.
FIGURE 18 - High and Low
Voltage Control Panels in the
Electrical Compartment
NOTE: Images are
representative and do
not accurately depict
control locations for
all sizes.
The high and low voltage panels illustrated
below are mounted side-by-side in the
electrical control compartment.
7.0 Electrical and Wiring (cont'd)