16
INSTALLATION
Electrical Connection to Control Box
1. Route the Air Handler power wires through aligned
holes in casing and Control Box and make field wire
connections in Control Box. Use best practices for wire
bushings, strain relief, etc. Field wiring to the unit must
be grounded and conform to the National Electrical Code
C22.1 Part 1 - latest edition. Use only CSA or UL listed
conduit and conduit connectors to connect supply wires
to the unit and provide appropriate grounding.
Grounding may also be accomplished by grounding the
control box per appropriate local codes. Electric wires
that are field installed shall conform to the temperature
limitation for 63° F (35° C) rise wire when installed in
accordance with instructions. Refer to Table 3 in for
specific Air Handler electrical data.
2. Route and secure field ground wire to ground screw
on Control Box.
3. Connect line voltage leads as shown in Figure 12.
4. Reinstall cover to Control Box. Ensure that wires are
not pinched between cover and edge of Control Box.
24V Control System Connections to Unit’s
Printed-Circuit Board (PCB):
Refer to Figure 12 for factory wiring details.
For low voltage connections between the unit and the
thermostat, use No. 18 AWG colour-coded, insulated
(63° F / 35°C minimum) wires.
Low Voltage Connections
These units use a grounded 24 volt AC low voltage circuit
and require at least a 1 stage heating and a 1 stage cooling
thermostat.
The “R” terminal is the hot terminal and the “C” terminal
is grounded.
“G” terminal is the fan input.
“Y” terminal is the compressor.
“R” terminal is 24 VAC hot.
“C” terminal is 24 VAC grounded.
“W” terminal is the heat input.
WARNING
Failure to follow this warning could result in a fire.
Do not use aluminum wire between the DVS Air
Handler and the disconnect switch. USE COPPER
WIRE ONLY.
NOTES:
1. Connect Y terminal as
shown for proper operation.
2. Some thermostats require a
“C” terminal connection as
shown.
3. If any of the original wire, as
supplied, must be replaced,
use the same type or
equivalent wire.
W
G
R
C
Y
Y
W
G
R
C
BLK
BLK
WHT
WHT
GND
GND
AIR HANDLER
115 Volt Fuse Disconnect
(Field Supplied)
5 Wire
3 Wire Heating Only
Single Stage
Thermostat
(Available Accessory)
24 Volt Terminal Block
Disconnect
(Field Supplied)
208 / 230 Volt
Single Phase
Control Box
PCB
Condensing Unit
(Field Supplied)
Field 115, 208 / 230 Volt Wiring
Field 24 Volt Wiring
Factory 24 Volt Wiring
Factory 115 Volt Wiring
Junction Box
L1
L2
F I G U R E 1 2 Field Wiring Diagram
R E D Z O N E
T M
D V S S E R I E S A I R H A N D L E R M A N U A L
