38
IM 725 (1-02)
Notes:
1. The auxiliary contact of the Remote Speed Switch is closed at “HI” and “LO”
positions and open at “OFF” position.
2. Refer to detailed wiring diagram furnished with unit for internal connections.
3. Mount remote speed switch in UL listed outlet box. Class 1 Wiring (Both Field
Supplied).
4. Remove wire 501 from Unit Ventilator speed switch “SW-2” terminal “T6” in
control box.
5. Connect one side of auxiliary contact of the remote speed switch (Blk), to
terminal “T6” of speed switch. Connect the other side of the auxiliary contact
(Blk) of the remote speed switch to wire 501.
6. Remove transformer “X1” connections Common (Blk), Hi (Brn), Med (Blu) and
Lo (Yel) from unit speed switch “SW-2” in Unit Ventilator control box.
7. a. If unit speed switch “SW-2” has Hi, Med and Lo terminals jumpered together,
connect Hi speed (Brn Wire) to Hi (Yel Wire) and Lo (Blu Wire) of remote speed
switch. Using field supplied wire nuts cap the blue and yellow wires previously
removed from speed switch “SW-2”.
b. If speed switch “SW-2” does not have Hi (Brn), Med (Blu) and Lo (Yel) terminals
jumpered, connect as follows: common (Blk) to red on remote speed switch Hi
(Brn) to Hi (Yel) on remote speed switch Lo (Yel) to Lo (Blu) on remote speed
switch. Cap Blue wire with field supplied wire nut.
8. Place label in suitable location for future use.
Figure 117 - Remote Two Speed Control Switch
All Wiring
Class 1
Motor Speed
Transformer
Connected per
Unit Schematic
M
Blk
Red
Blk
Red
501
500
SW2
6
5
X1
Red
Yel
Brn
Yel
Brn
Blu
X1
Blu
Yel
Yel
Blu
Blk
Red
Blk
Off
Lo
Hi
1
2
Blu
Auxiliary
Contact
4
1
⁄
2
" (114mm)
2
3
⁄
4
"
(70mm)
UNIT CONTROL
OF
F
HI
LO
Field
Wiring
by
Others
Remote Speed Switch
Unit Ventilator Switch Box Located
In Right Hand Compartment
6 " (152mm)
Long Pigtails
Juction Box
(By Others)
Step 5
Make Electrical Connections
To avoid electrical shock, personal injury or death, be sure that
field wiring complies with local and national fire, safety, and
electrical codes, and voltage to the system is within the limits
shown in the job-specific drawings and unit electrical data
plate(s).
Power supply to unit must be disconnected when making field
connections. To avoid electrical shock, personal injury or
death, be sure to rigorously adhere to field wiring procedures
regarding proper lockout and tagout of components.
WARNING
!
Table 24 - Floor AH Electrical Data/Motor Data and Unit Amp
Unit
CFM
L/s
ESP
Motor
Unit Current #
Series
(Nom.)
in. H2O
PA
HP
Watts
115V
208V
230V
265V
S07
750
354
0.0-0.2
0-50
1/4
164
1.8
1.0
0.9
0.8
H07
0.21-0.45 52.5-112.5
1/2
239
2.0
1.1
1.0
0.9
S10
1000
472
0.0-0.2
0-50
1/4
244
3.1
1.7
1.5
1.3
H10
0.21-0.45 52.5-112.5
1/2
356
3.4
1.9
1.7
1.5
S13
1250
590
0.0-0.2
0-50
1/4
306
3.5
1.9
1.8
1.5
H13
0.21-0.45 52.5-112.5
1/2
447
3.8
2.1
1.9
1.7
S15
1500
708
0.0-0.2
0-50
1/4
334
3.7
2.0
1.8
1.6
H15
0.21-0.45 52.5-112.5
1/2
488
4.0
2.2
2.0
1.7
S20
2000
944
0.0-0.2
0-50
1/3
249
7.0
3.9
3.5
3.0
H20
0.21-0.45 52.5-112.5
1/2
373
7.6
4.2
3.8
3.3
# Amps at unit voltage, 60 Hz, single phase
Note:
Unit wire sizing should be determined in accordance with
NEC and local codes.
* External static pressure ranges must be strictly
adhered to.
See Table 24, and Figures 82 - 87 and the job-specific electrical
drawings before proceeding with field power and control wiring. See
also the wiring diagram provided on the unit ventilator right front
access panel.
In addition, those unit ventilators equipped with optional electric
heating coil have electric heating coil power connections at right end
only.
Instructions
1. Provide power supply to right end compartment to match unit
nameplate.
2. Wire leads provided from unit ventilator electric connection box
to load side of unit power switch (switch provided by AAF).
The junction box has 1"(25mm) and 2"(51mm) knockouts, located
10-1/2"(267mm) from right end of unit.
3. Provide ground wire from grounding screw in switch junction box
to switch ground terminal.
4. Wire field power supply to line side of unit power switch. Wire
ground conductor to switch ground terminal.
5. Mount unit power switch in switch junction box and install switch
cover plate (provided).
Note:
On units with electric heat, the 2 pole unit power switch is replaced by a 3 pole switch
and is mountd as shown in figure 82 page 26. (A) shows switch location for valve
control unitrs and (B), (C) and (D) show location for Face & Bypass control units. (B)
is for 208, 230 and 265 volt vertical (AV) and horizontal (AH) units. (C) shows location
for 460 volt vertical (AV) units and (D) shows location for 460 volt horizontal (AH) units.
Also, on electric heat units with controls by others, wiring to the field mounted
controller is done in the left end compartment. See specific wiring diagram for details.
CAUTION
!
Use copper conductors only. Use of aluminum conductors may
result in equipment failure and overheating hazards. All wiring
in right hand compartment must be class 1.