Marvair ComPac Installation & Operation Manual
12/2017 Rev.16
5
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 electronic equipment shelters, process control centers, and other applications
with high internal heat gains. The series includes multiple sizes and nominal cooling capacities from
11,000 to 72,000 BTUH. Resistance heating elements are available in various wattages.
The AVPA models are available with nominal cooling capacities of 12,000 to 72,000 BTUH’s and
Energy Efficiency Ratios (EER’s) of 9.0 to 10.0. The AVHA models are available with nominal cooling
capacities of 12,000 to 60,000 BTUH’s and EER’s of 10.0. HVEA modes are available with cooling
capacities of 24,000 to 60,000 BTUH and EER’s of 10.50 to 11.75. HVESA models are identical to
the HVEA models, but have a 2-stage compressor. The ComPac Product Data Sheets have detailed
information on the capacities and efficiencies for each model.
See Appendix A for instructions on field installation of electric heat.
ComPac air conditioners feature an exclusive electronic control board. The control board consolidates
several of the electrical components and improves the air conditioner’s reliability. The control board
replaces the blower relay, the lockout relay, the compressor time delay and the timed low pressure
bypass. In addition, the control board 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.
ComPac and models are designed for easy installation and service. Major components are accessible
for service beneath external panels.
All units have internal disconnects (optional on 380V and 575V). Depending upon state and local code
requirements, this feature may eliminate the need for an external breaker or disconnect.
ComPac units have a 0-15% manual outside air damper as standard equipment. Marvair ComPac models
are available with an optional factory installed economizer for 100% free cooling with outside air.
1.2 Model Identification
The model identification number is found on the data sticker. Rating plate located on side panel.
Unused = Marvair
ComPac
EUB = Eubank
WalPac
Cabinet Color
100 = Marvair Beige
200 = Gray
400 = White
800 = Eubank Mesa Tan
A5 = Built in
compliance with
UL 1995, 4th edition
AVP
AVH
HVE
Nominal Cooling
12 = 11,000 BTUH
20 = 20,000 BTUH
24 = 24,000 BTUH
30 = 30,000 BTUH
36 = 36,000 BTUH
42 = 42,000 BTUH
48/49 = 48,000 BTUH
60 = 60,000 BTUH
72 = 72,000 BTUH
System Type
Air Conditioner
Power Supply
A = 208/230V,1ø,60Hz
C = 208/230V,3ø,60Hz
D = 460V,3ø,60Hz (3 wire)
Z = 575V,3ø,60Hz
Configuration
N = Non-Economizer
C = Economizer
Electric Heat – kW
000 = No Heat
022 = 2.2 kW
036 = 3.6 kW
040 = 4 kW
050 = 5 kW
060 = 6 kW
Special Option Code
R = Electric Reheat
U = Scroll Compressor
X = Hot Gas Bypass
O = Opposite side
compressor
E = Extreme Duty
D = Desert Duty
G = Hot Gas Reheat
2-Stage
Compressor
••• S A
•• AC
•
•••
• •
A5
•••
•••
Refrigerant
A = R410A
080 = 8 kW
090 = 9 kW
100 = 10 kW
120 = 12 kW
150 = 15 kW
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
