VMA1400 Series Overview and Engineering Guidelines Technical Bulletin 27
Specifications
Table 17: Specifications
Feature Specification
Product Name
Variable Air Volume Modular Assembly (VMA)
Product Code
Number
Single Unit
Bulk Pack
Buy American
Cooling Only
Models:
AP-VMA1410-0
AP-VMA1410-0D
AP-VMA1410-0G
Cooling with Reheat and/or
Fan Powered Models:
AP-VMA1420-0
AP-VMA1420-0D
AP-VMA1420-0G
Models without
Actuators:
AP-VMA1430-0
AP-VMA1430-0D
AP-VMA1430-0G
Supply Voltage
20-30 VAC at 50 or 60 Hz
Optional Fuse Current
0.6 ampere for VMA1410; 2.0 ampere for VMA1420; 1.2 ampere for VMA1430
Power Consumption
VMA1410/1420: 10 VA maximum (relay and valve requirements not included)
VMA1430: 3 VA maximum (damper actuator, relay, and valve requirements
not included)
Ambient Operating
Conditions
0 to 50°C (32 to 122°F)
Ambient Storage
Conditions
-40 to 70°C (-40 to 158°F)
Terminations
6.3-mm (1/4-in.) spade lugs (Communication has screw terminals.)
Serial Interfaces
N2 Bus and Zone Bus
N2 Controller
Addressing
DIP switch set (1-253) Addresses 254 and 255 are reserved. Software addressable
with the HVAC PRO program Release 7.02 or later, or the VBT program
Communications Bus
N2 between VMA and NCM/N30 (3-wire). Zone Bus between VMA and room sensor
(8-pin phone jack or wire to spade lugs or optional plug-on terminals)
Mounting
One screw (included) mounts the VMA1410/1420 to the VAV box. One screw
attaches damper shaft to the actuator, 8-mm (5/16-in.) square head set screw with
44 N
.
m (375 lb
.
in) of axial holding power for up to 13-mm (1/2-in.) round damper
shafts. Minimum damper shaft length is 44.5 mm (1-3/4 in.). Use two screws
(included) to mount the VMA1430 to the VAV box.
Housing
Plastic housing for controller/actuator with UL 94-5VB Plenum Flammability Rating
Dimensions
(L x W x H)
VMA1410/1420: 153 x 102 x 102 mm (6 x 4 x 4 in.)
VMA1430: 153 x 102 x 83 mm (6 x 4 x 3.25 in.)
Actuator Torque
4 N
.
m (35 lb
.
in) minimum (VMA1410/1420 only)
Shipping Weight
VMA1410/1420: 13.1 kg (29 lb) for a box of ten, 1.3 kg (2.8 lb) each
VMA1430: 5 kg (10.6 lb) for a box of ten, 0.5 kg (1.06 lb) each
Electrical Inputs
Analog Inputs:
• Nickel, silicon, or platinum (1 K ohm) or NTC (2.25 K) RTD room sensors,
1.6 K setpoint potentiometer (2-wire)
• Voltage input for 0-10 VDC (humidity or dew point sensor)
Binary Inputs: Dry contacts
Input configurations vary based on model type.
Velocity Pressure
Velocity Pressure for 374 Pascal (0-1.5 in. w.c.)
Outputs
No outputs on VMA1410, except Stepper Motor
Binary outputs: 24 VAC triac switched, 25-500 mA loads
Stepper drive: 2 to 767 steps per second (23,000 step resolution)
(VMA1410/1420 only)
Analog output: 0-10 VDC @ 10 mA maximum
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