Unit installation

035-000040-001 Page 8 of 18 DVA IOM 1.3 08-18-2014
Figure 3
PSC Motor Option
Unit Wiring
ELECTRICAL CONNECTIONS
PSC MOTOR: Figure 3 illustrates the internal
wiring for the unit. The utility box is mounted on
the coil connection side of the unit. All leads pass
through a strain relief where they enter the utility
box. Wiring within the cabinet has been positively
located and supported so that it does not pass
over sharp metal edges or come in contact with
moving parts. After servicing, properly position
electrical leads in their original supports.
ECM MOTOR: Figure 6 indicates the internal
wiring for the unit. The electrically commutated
motor (ECM) has 5 discrete speed settings that
can be adjusted. The single fan relay allows the
thermostat to activate one of the 5 fan speeds.
The 24VAC, 40VA control transformer allows the
unit to power a thermostat and up to two water
flow control valves. See also Figure 8.
WARNING: CHECK MOTOR RATING
PLATE FOR CORRECT LINE VOLTAGE.
This appliance must be permanently grounded
in accordance with the National Electrical
Code and local codes and ordinances.
NOTE: Reference Figures 4 and 5 for access
to motor and electrical components.
Voltage Phase HP FLA
115 1/10 2.1 2.6
DVA04
208-230 1 1/10 0.8 1.0 15
277 1/6 0.9 1.1
115 2.7 3.4
DVA06
208-230 1 1/6 1.0 1.3 15
277 0.9 1.1
115 4.1 5.1
DVA08
208-230 1 1/4 1.3 1.6 15
277 2.0 2.5
115 6.9 8.6
DVA10
208-230 1 1/3 2.2 2.8 15
277 2.4 3.0
Notes:
1.MCA = Minimum Circuit Ampacity
2.MOPD = Maximum Overcurrent Protective Device, in amps.
3.FLA = Full Load Amps
4.HP= Motor nominal horsepow er.
5.All motors are 60Hz.
6.Use minimum w ire size #14 AWG 75C w ire at unit.
ELECTRICAL DATA - DVA with PSC MOTOR
Model
Motor
MCA MOPD