Form I-RDF, P/N 148384 (Rev 1), Page 19
CAUTION: This chart
lists full load amp
requirement of standard
motor and standard
controls. Optional
controls will increase
amp requirement. Add
motor amps and control
amps for approximate
unit full load amps.
System FLA are shown
on the rating plate.
Blower Motor Full Load Amps (open motors)
Motor
HP 115V/1 230V/1 208V/3 230V/3 460V/3 575V/3
1/2
9.8
4.9
2.2
2.0 1.0 N/A
3/4
13.8
6.9
3.1
2.8
1.4
N/A
1
16.0 8.0 4.1
3.6
1.8
1.4
1.5
N/A
10.0 5.75
5.2
2.6
2.0
2
N/A
N/A
7.5
6.8
3.4
2.4
3
N/A
N/A
10.6
9.6
4.8
3.6
5
N/A
N/A
16.8 15.2 7.6 5.4
7.5
N/A
N/A
21.0 19.0 9.5 8.4
10
N/A
N/A
29.0 25.2 12.6 10.4
15
N/A
N/A
42.0 40.0 20.0 16.0
20
N/A
N/A
53.0 50.0 25.0 20.0
25
N/A
N/A
66.0 63.0 31.5 26.0
30
N/A
N/A
78.0 74.0 37.0 28.5
13. Check-Test Start
FIGURE 26 - Control Locations in the Electrical Compartment, RDF Series 3 Direct-Fired Systems
(NOTE: Locations may not be identical, but controls should be smilar.).
Check/Test/Startup Procedures (Follow Steps in Sequence)
IMPORTANT NOTE: These instructions are designed for systems manufactured beginning 8/2003 equipped
with hot surface ignition and standard diagnostic lights. If the system being started was manufactured prior to
8/2003, contact your representative or the factory service department for appropriate startup procedures.
Control
Relays
Outside Air Cutoff
(high ambient limit control)
Time Delay
Relay
24-volt Terminals
Ignition
Module
Maxitrol Amplifier
or Signal Conditioner
Service
Switches
Status Lights
Circuit
Board
24-V
olt
Terminals
Bypass
Damper
Motor
Return
Air
Damper
Motor
Motor
Starter
Transformer
Line Voltage
Terminals
Starter
Relay
Relay for
Optional 2-Speed
High
Low
Standard Pressure
Switches
Optional Dirty Filter
Pressure Switch
