5
Marvair ComPac AVHDA I&O Manual 03/2019 Rev.3
Chapter 1 Description & Specifications
1.1 General Description
The Marvair ComPac is a series of vertical wall-mounted air conditioning systems that provide
heating, cooling, and ventilation for telecommunication shelters, and other applications with high
internal heat gains. The series is available in nominal cooling capacities of 90,000 BTUH. A factory
installed economizer, resistance heating elements and reverse flow configurations are available.
All of Marvair's ComPac models feature an exclusive electronic control board.
The control board consolidates several of the electrical components, improves the air conditioner’s
reliability and has LED’s to indicate operating status and fault conditions to assist the service technician.
A complete description of functions of the control board is in Section 1.6
Other standard components include:
• Hot gas by-pass valve to allow operation in cold temperatures
• Thermal expansion valve to improve both efficiency and capacity over a wide range of ambient
temperatures
• Phase monitor to prevent operation if the unit is not properly phased
The ComPac is designed for easy installation and service. Major components are accessible for
service beneath external panels.
All units have internal disconnects. Depending upon state and local code requirements, this feature
may eliminate the need for an external breaker or disconnect.
1.2 Model Identification
The model identification number is found on the data sticker. Rating plate located on side panel.
Cabinet Color
116 = Beige (standard)
216 = Gray
500 = Stainless Steel
(Exterior panels only)
900 = Custom Color
Efficiency Rating
EER 10+
Nominal Cooling
090 = 90,000 BTUH
System Type
Air Conditioner
Electric Heat – kW
000 = No Heat
050 = 5 kW
090 = 9 kW
150 = 15 kW
Power Supply
A = 208/230V,1ø,60Hz
C = 208/230V,3ø,60Hz
D = 460V,3ø,60Hz (3 wire)
E = 380V,3ø,50Hz (4 wire)
F = 220V,1ø,50Hz
Z = 575V,3ø,60Hz
Compressor
U = Scroll Compressors
Ventilation
N = Non-Economizer
C = Economizer
Special Option Code
F = Reverse Air Flow
2
A5= Built in compliance
with UL 1995,
4th edition
Refrigerant
A = R410A
Dual
Compressors
1
VZ = Verizon Specification
AVH D A
••• AC
• •••
• •
U ••
A5
•••
Notes:
1
The standard configuration on the AVHDA90 is dual compressors.
2
The standard configuration is with the supply (conditioned) air at the top of the unit and the return air below it. In the reverse air flow configuration, the return is at the top and the supply air
below it.
1.3
Serial Number Date Code
A = January
E = May
J = September
D = 2014
H = 2018
B = February
F = June
K = October
E = 2015
I = 2019
C = March
G = July
L = November
F = 2016
J = 2020
D = April
H = August
M = December
G = 2017
K = 2021
