4
LEGEND
*Determined by looking at the unit from the front.
†Cv of 3.5 and MOPD of 20 psi.
**Cv of 2.5 and MOPD of 50 psi.
††Available with Complete C only.
***Sizes 007, 009, and 012 only.
†††20A plug and cord are not available in 265V units.
ARI* capacity ratings
LEGEND
*Air Conditioning & Refrigeration Institute.
NOTES:
1. Ratings are in accordance with ARI Standard 320-93.
2. Cooling Standard: 80 F db, 67 F wb indoor entering air temperature,
85 F entering water and 95 F leaving water temperatures.
3. Heating Standard: 70 F db indoor entering air temperature, and 70 F
entering water temperature.
Cv
—
Coefficient of Velocity
MOPD —
Maximum Operating Pressure Differential
UNIT 50KQ
COOLING
HEATING
AIRFLOW
CFM
WATER
FLOW RATE
GPM
PRESSRUE
DROP
ft wg
TC
TSC
THR
kW
EER
TC
THA
kW
COP
007
6,800
5,032
8,500
0.531
12.8
8,600
6,958
0.548
4.6
280
1.7
2.3
009
9,000
6,667
11,500
0.744
12.1
11,600
9,215
0.791
4.3
280
2.3
4.2
012
11,800
8,160
15,000
0.922
12.8
14,000
10,797
1.052
3.9
375
3.0
9.4
015
15,000
10,959
19,000
1.200
12.5
17,100
13,395
1.222
4.1
400
3.8
3.0
019
17,600
12,361
22,500
1.467
12.0
21,000
16,058
1.620
3.8
430
4.5
4.2
CFM
—
Cubic Feet Per Minute
COP
—
Coefficient of Performance
db
—
Dry Bulb Temperature
EER
—
Energy Efficiency Ratio
GPM
—
Gallons Per Minute
kW
—
Total Power Input (Kilowatt Hours)
TC
—
Total Capacity (Btuh)
THA
—
Total Heat of Absorption (Btuh)
THR
—
Total Heat of Rejection (Btuh)
TSC
—
Total Sensible Capacity (Btuh)
wb
—
Wet Bulb Temperature
Model number nomenclature
Size – Tons
007
– 1/2
009
– 3/4
012
– 1
015
– 1-1/4
019
– 1-1/2
50 KQA 007 L C F 3 0 1 A A
50
– Carrier Prefix
Voltage
1
– 115V/1 Ph/60 Hz***
3
– 208/230V/1 Ph/ 60 Hz
4
– 265V/1 Ph/60 Hz†††
Packaging
1
– Domestic
Power Connection
A
– Field Connected, Hard Wire
B
– 20A Plug
D
– Disconnect Switch & 15A Fuse
F
– Disconnect Switch, Non-Fused
H
– 20A Plug, Cord Receptacle, Disconnect Switch, 15A Fuse
K
– 20A Plug, Cord Receptacle, Disconnect Switch, No Fuse
Revision Code
0
– Current Revision – Water Circuit Options
Controls
A
– Manual Changeover with Complete C Microprocessor Board
B
– Manual Changeover with Deluxe D Microprocessor Board
C
– Automatic Changeover with Complete C Microprocessor Board
D
– Automatic Changeover with Deluxe D Microprocessor Board
P
– PremierLink™ DDC Control††
R
– Remote Thermostat with Complete C
S
– Remote Thermostat with Deluxe D
Series
KQA
– Standard Temperature Range (60 to 95 F)
KQD
– Low Temperature Range (40 to 110 F)
Cabinet & Subbase Options
Option Cabinet
Subbase
A
Bottom Return
3
″
Subbase
B
Bottom Return
3
″
Subbase w/Motorized Damper
C
Bottom Return
5
″
Subbase w/Motorized Damper
D
Bottom Return
No Subbase
E
Bottom Return, Control Door Lock
3
″
Subbase
F
Bottom Return, Control Door Lock
3
″
Subbase w/Motorized Damper
G
Bottom Return, Control Door Lock
5
″
Subbase w/Motorized Damper
H
Bottom Return, Control Door Lock
No Subbase
J
Front Return
No Subbase
K
Front Return, Control Door Lock
No Subbase
L
No Cabinet
3
″
Subbase
M
No Cabinet
3
″
Subbase w/Motorized Damper
N
No Cabinet
5
″
Subbase w/Motorized Damper
P
No Cabinet
No Subbase
Q
No Cabinet
5
″
Subbase
R
Bottom Return
5
″
Subbase
S
Bottom Return, Control Door Lock
5
″
Subbase
Heat Exchanger
Connection
Copper
Cupronickel
1/2
″
Female Pipe Thread
F
G
1/2
″
Sweat
S (Std)
T
1/2
″
Male Pipe Thread
M
N
Water Connections/Valve Options*
Connection Side
Left
Right
No Valve Options
L
R
Standard Water Control Valve†
A
J
High MOPD Water Control Valve**
B
K
Autoflow Regulator Sized for 2.5 GPM per Ton
C
M
Autoflow Regulator Sized for 3.0 GPM per Ton
D
N
Standard Control Valve with 2.5 GPM/Ton Regulator
E
P
Standard Control Valve with 3.0 GPM/Ton Regulator
F
Q
High MOPD Control Valve with 2.5 GPM/Ton Regulator
G
S
High MOPD Control Valve with 3.0 GPM/Ton Regulator
H
T
