Johnson Controls DOA096B21S Series, Engineering Manual

Page: 46 / 48

SELECTION DATA
4-2
TC-16005-rev.2
(3) Combination of Outdoor Unit and DOAS Unit
Indoor units can be connected to the outdoor unit (VRF system).
Refer to the table below for connection capacity ratio of each outdoor unit.
(4) Indication of Selection
For selection of required outside airflow (and required number of DOAS units), refer to applicable local
codes or latest issue of :
ANSI/ASHRAE Standard 62.1-2016, Ventilation for Acceptable Indoor Air Quality and/or,
ANSI/ASHRAE Standard 62.2-2016, Ventilation and Acceptable Indoor Air Quality in Low-Rise
Residential Buildings.
The standard specifies minimum ventilation rates, and other measures, for new and existing buildings
that provide indoor air quality that is acceptable to human occupants and that minimizes adverse
health effects.
The standards list minimum required outside air (in CFM/person) depending on type of activity in the
building/room.
< Connection Capacity Ratio >
Outdoor Unit Model Name
DOAS Only
DOAS with other Indoor Units
[ Capacity of DOAS shall be
calculated by multiplying with 1.5.]
Minimum Maximum Minimum Maximum
VRF
(Standard
Type)
(H,Y)VAH(P,R)072B(3,4)1S 100% 145% 70% 150%
(H,Y)VAH(P,R)096B(3,4)1S 100% 145% 65% 135%
(H,Y)VAH(P,R)120B(3,4)1S 100% 145% 60% 130%
(H,Y)VAH(P,R)144B(3,4)1S 100% 145% 75% 150%
(H,Y)VAH(P,R)168B(3,4)1S 100% 145% 65% 140%
(H,Y)VAH(P,R)192B(3,4)1S 100% 145% 65% 135%
(H,Y)VAH(P,R)216B(3,4)1S 100% 145% 70% 150%
(H,Y)VAH(P,R)240B(3,4)1S 100% 145% 70% 150%
(H,Y)VAH(P,R)264B(3,4)1S 100% 145% 65% 140%
(H,Y)VAH(P,R)288B(3,4)1S 100% 145% 65% 135%
(H,Y)VAH(P,R)312B(3,4)1S 100% 145% 65% 130%
(H,Y)VAH(P,R)336B(3,4)1S 100% 145% 65% 140%
(H,Y)VAH(P,R)360B(3,4)1S 100% 145% 65% 135%
VRF
(Less Module
Type)
(H,Y)VAH(P,R)240B(3.4)1LM 100% 120% 60% 120%
(H,Y)VAH(P,R)336B(3.4)1LM 100% 120% 60% 120%
(H,Y)VAH(P,R)360B(3.4)1LM 100% 120% 60% 120%
Low
Ambient
VRF
(H,Y)VAHP072B(3,4)1CW 100% 145% 60% 130%
(H,Y)VAHP096B(3,4)1CW 100% 145% 60% 110%
(H,Y)VAHP144B(3,4)1CW 100% 145% 60% 130%
(H,Y)VAHP168B(3,4)1CW 100% 145% 60% 110%
(H,Y)VAHP192B(3,4)1CW 100% 145% 60% 110%
(H,Y)VAHP288B(3,4)1CW 100% 145% 60% 110%
NOTES:
1. DOAS cannot be connected to a Heat Recovery system.
2. DOAS cannot be connected with Mini VRF.
3. When connecting multiple DOAS and/or other standard indoor unit to the outdoor unit, be sure to operate all
indoor units simultaneously.
In addition, it is recommended that only connect one DOAS to each outdoor unit.