Surna ENVIROPRO SHAU Operating instructions

Surna.com
Models: SHAU
May 2021
ENVIROPRO™
SURNA MINI AIR
HANDLER UNIT
OPERATING AND MAINTENANCE MANUAL

INVESTING IN QUALITY, RELIABILITY & PERFORMANCE
World Leading Design and Technology
Every product is manufactured to meet the stringent requirements of the internationally
recognized ISO 9001 standard for quality assurance in design, development and
production. Equipped with the latest air-conditioning test rooms and manufacturing
technology, our fan coil units are produced conforming to the highest international
standards of quality and safety.
The Highest Standards of Manufacturing
All products conform to UL standard for Safety for Heating and Cooling Equipment
UL1995 4th Edition, October 14, 2011; all products conform to CSA standard for Safety for
Heating and Cooling Equipment CSA C22.2 No.236-11, 4th Edition, October 14 2011.
In order to guarantee the very highest standards and performance, every stage in the
manufacturing of our products are managed. Throughout the production process strict
control is maintained, starting with extensive resources in research and development
through to the design and manufacture of almost every individual component, from
molded plastics to the assembly of the units and controllers.
Quality Controlled from Start to Finish
All products conform to the “WEEE” directive to guarantee correct standards of
environmental solutions.
Highly trained sta and strict quality control methods enable the production of products
with an exceptional reputation for reliability and eciency, maintained over many years.
As well as full CE certification and ISO 9001, several products ranges have UL / ETL safety
approvals, Eurovent performance and sound certification as well as ROHS compliance
for Europe, giving you the confidence of knowing our company is the right choice when
selecting fan coil units.
ALWAYS MAKE SURE THIS MANUAL REMAINS WITH THE UNIT. READ THIS MANUAL
BEFORE PERFORMING ANY OPERATION ON THE UNIT.
ETL SAFETY STANDARDS
WEEE MARK
ISO 9001 QUALITY

TABLE OF CONTENTS
Specifications 5
Technical Description 18
Warnings 20
Warranty Information 22
Installation Instructions 23
Dimensions 30
Routine Maintenance 33
Troubleshooting 35
3

MODEL CODE NOMENCLATURE
L Left side
SHAU(XR) - XXX - XX - AECM - X - L
AECM EC motor configuration
P 4-Pipe
V 2-Pipe
200 Unit sizes, see general
specifications section for
cooling and heating
capacities.
400
600
800
SHAU
(6R+1)
Surna Mini Air Handler
6 row cooling/1 row heating
(4-pipe)
SHAU
(4R+2)
Surna Mini Air Handler
4 row cooling/2 row heating
(4-pipe)
SHAU
(4R+1)
Surna Mini Air Handler
4 row cooling/1 row heating
(4-pipe)
SHAU
(4R)
Surna Mini Air Handler
4 row cooling (2-pipe)
SHAU
(6R)
Surna Mini Air Handler
6 row cooling (2-pipe)
X 220V/1Ph/60Hz
W
Flexible function onboard
PCB with zone control
functionality.
S
Complete function
onboard PCB with
integrated group control
functionality.
4

SPECIFICATIONS
SHAU(4R)XXXVXAECMXL
Note:
a. Cooling conditions:
Air temperature: 80°F DB/67°F WB (27°C DB/19°C WB).
Water inlet/outlet: 45°F/55°F (7°C/12°C).
b. All dimensions are approximate within 1/16 of an inch
of those indicated.
Table 1: SHAU(4R) specifications
2PIPE SYSTEMS
4-Row Cooling
Size 200 400 600 800
Unit
Configuration
Configuration 2 pipes
Number of fan blowers 1 2
Power supply (V/Ph/Hz) 220/1/60
Performance Data
Air
Air Flow CFM
(m/h) 1321 (2244) 2417 (4107) 3739 (6353) 4835 (8215)
External Static Pressure
for Above CFM
in.wg
(Pa) 0.5 (124.42)
Cooling
Total Cooling Capacity BTU/Hr
(kW)
53347 (15.63) 95657 (28.03) 143556 (42.07) 182100 (53.34)
Sensible Cooling
Capacity 35453 (10.39) 63881 (18.72) 96176 (28.19) 122522 (35.91)
Sound
Sound Pressure Level
(Outlet) dB(A)
67 74 75 77
Sound Power Level
(Outlet) 76 83 84 86
Electrical
Max. Power Input W 375 500 1000
Full Load Amps (FLA)
@ 220V
A
1.63 2.17 4.34
Min. Circuit Ampacity
(MCA) 2.04 2.71 5.43
Max. Overcurrent
Protection (MOP) 15
Hydronic
Cooling Water Flow Rate GPM
(L/h) 10.5 (2385) 18..9 (4293) 28.4 (6450) 36.0 (8176)
Cooling Pressure Drop Ft/Head
(kPa) 6.1 (18.23) 7.1 (21.22) 15.9 (47.51) 12.5 (37.35)
Water Content Gal (L) 1.6 (6.06) 2.4 (9.08) 2.8 (10.6) 3.3 (12.49)
Physical Data
Water Connections In
Inch
(mm)
1-1/4 (31.75)
Out
Condensate Drainage
Connection 1 (25.4)
Dimensions
L
Refer to Dimensions section (Pg. 30-32)
W
H
Net Weight lbs (kg) 330 (149.69) 410 (185.97) 490 (22.26) 560 (254.01)
5

SHAU(6R)XXXVXAECMXL
Note:
a. Cooling conditions:
Air temperature: 80°F DB/67°F WB (27°C DB/19°C WB).
Water inlet/outlet: 45°F/55°F (7°C/12°C).
b. All dimensions are approximate within 1/16 of an inch
of those indicated.
Table 2: SHAU(6R) specifications
2PIPE SYSTEMS
6-Row Cooling
Size 200 400 600 800
Unit
Configuration
Configuration 2 pipes
Number of fan blowers 1 2
Power supply (V/Ph/Hz) 220/1/60
Performance Data
Air
Air Flow CFM
(m/h) 1209 (2054) 2341 (3977) 3577 (6077) 4683 (7957)
External Static Pressure
for Above CFM
in.wg
(Pa) 0.5 (124.42)
Cooling
Total Cooling Capacity BTU/Hr
(kW)
54859 (16.07) 107061 (31.38) 148861 (43.63) 198866 (58.28)
Sensible Cooling
Capacity 35709 (10.47) 69539 (20.38) 98948 (29) 131553 (38.55)
Sound
Sound Pressure Level
(Outlet) dB(A)
67 74 75 77
Sound Power Level
(Outlet) 76 77 78 80
Electrical
Max. Power Input W 375 500 100
Full Load Amps (FLA)
@ 220V
A
1.63 2.17 4.34
Min. Circuit Ampacity
(MCA) 2.04 2.71 5.43
Max. Overcurrent
Protection (MOP) 15
Hydronic
Cooling Water Flow Rate GPM
(L/h) 10.8 (2453) 21.1 (4792) 29.4 (6678) 39.3 (8926)
Cooling Pressure Drop Ft/Head
(kPa) 3.2 (9.57) 12.9 (38.55) 3.8 (113.56) 7.2 (21.52)
Water Content Gal (L) 2.4 (9.09) 3.6 (13.63) 4.2 (15.99) 5.0 (18.93)
Physical Data
Water Connections In
Inch
(mm)
1-1/4 (31.75)
Out
Condensate Drainage
Connection 1 (25.4)
Dimensions
L
Refer to Dimensions section (Pg. 30-32)
W
H
Net Weight lbs (kg) 353 (160.12) 445 (201.85) 530 (240.40) 600 (272.16)
6

SHAU(4R+1)-XXXPXAECMXL
Note:
a. Cooling conditions:
Air temperature: 80°F DB/67°F WB
(27°C DB/19°C WB).
Water inlet/outlet: 45°F/55°F
(7°C/12°C).
b. Heating conditions:
Air temperature: 70°F (21°C).
Water inlet/outlet temperature:
180°F /140°F (82°C/60°C).
c. All dimensions are approximate
within 1/16 of an inch of those
indicated.
Table 3: SHAU(4R+1) specifications
4PIPE SYSTEMS
4-Row Cooling + 1-Row Heating
Size 200 400 600 800
Unit
Configuration
Configuration 4 pipes
Number of fan blowers 1 2
Power supply (V/Ph/Hz) 220/1/60
Performance Data
Air
Air Flow CFM
(m/h) 1265 (2149) 2379 (4042) 3658 (6215) 44759 (76046)
External Static Pressure in.wg
(Pa) 0.5 (124.42)
Cooling
Total Cooling Capacity
BTU/Hr
(kW)
51867 (15.2) 94241 (27.62) 141477 (41.46) 179405 (52.58)
Sensible Cooling
Capacity 34427 (10.09) 62892 (18.43) 94721 (27.76) 120626 (35.35)
Heating
Heating Capacity 48591 (14.24) 85942 (25.19) 123502 (36.19) 157284 (46.1)
Sound
Max. sound pressure dB(A) 67 74 75 77
Max. sound power 76 83 84 86
Electrical
Max. power input W 375 500 1000
Full Load Amps (FLA)
@ 220V
A
1.63 2.17 4.34
Min. Circuit Ampacity
(MCA) 2.04 2.71 5.43
Max. Overcurrent
Protection (MOP) 15
Hydronic
Cooling Water Flow Rate GPM
(L/h) 10.2 (2317) 18.6 (4225) 27.9 (6337) 35.4 (8040)
Cooling Pressure Drop Ft/Head
(kPa) 5.8 (17.33) 6.9 (20.62) 15.5 (46.32) 12.2 (36.46)
Heating Water Flow Rate GPM
(L/h) 2.4 (545) 4.3 (977) 6.2 (1408) 7.8 (1772)
Heating Pressure Drop Ft/Head
(kPa) 3.2 (9.56) 1.7 (5.08) 3.6 (10.76) 2.0 (59.77)
Cooling Water Content
Gal (L)
1.6 (60.57) 2.4 (9.08) 2.8 (10.6) 3.3 (12.49)
Heating Water Content 0.4 (1.51) 0.6 (2.27) 0.7 (2.65) 0.9 (3.41)
Physical Data
Cooling Water
Connections
In
Inch
(mm)
1-1/4 (31.75)
Out
Heating Water
Connections
In 1 (25.4)
Out
Condensate Drainage
Connection 1 (25.4)
Dimensions
L
Refer to Dimensions section (Pg. 30-32)
W
H
Weight lbs (kg) 340 (154.22) 430 (195.05) 510 (231.33) 580 (263.08)
7

SHAU(4R+2)-XXXPXAECMXL
Note:
a. Cooling conditions:
Air temperature: 80°F DB/67°F WB
(27°C DB/19°C WB).
Water inlet/outlet: 45°F/55°F
(7°C/12°C).
b. Heating conditions:
Air temperature: 70°F (21°C).
Water inlet/outlet temperature:
180°F /140°F (82°C/60°C).
c. All dimensions are approximate
within 1/16 of an inch of those
indicated.
Table 4: SHAU(4R+2) specifications
Size 200 400 600 800
Unit
Configuration
Configuration 4 pipes
Number of fan blowers 1 2
Power supply (V/Ph/Hz) 220/1/60
Performance Data
Air
Air Flow CFM
(m/h) 1209 (2054) 2341 (3977) 3577 (6077) 4683 (7956)
External Static Pressure in.wg
(Pa) 0.5 (124.42)
Cooling
Total Cooling Capacity
BTU/Hr
(kW)
50016 (14.66) 93533 (27.41) 138359 (40.55) 178057 (52.18)
Sensible Cooling
Capacity 33145 (9.71) 62398 (18.29) 92539 (27.12) 119678 (35.07)
Heating
Heating Capacity 71129 (20.85) 131312 (38.48) 190464 (55.82) 246499 (72.24)
Sound
Max. sound pressure dB(A) 67 74 75 77
Max. sound power 76 83 84 86
Electrical
Max. power input W 412 765 1300 1530
Full Load Amps (FLA)
@ 220V
A
1.63 2.17 4.34
Min. Circuit Ampacity
(MCA) 2.04 2.71 5.43
Max. Overcurrent
Protection (MOP) 15
Hydronic
Cooling Water Flow Rate GPM
(L/h) 9.9 (2249) 18.5 (4202) 27.3 (6201) 35.2 (7995)
Cooling Pressure Drop Ft/Head
(kPa) 5.4 (16.14) 6.8 (20.32) 14.9 (44.53) 12.0 (35.86)
Heating Water Flow Rate GPM
(L/h) 3.5 (795) 6.5 (1476) 9.5 (2158) 12.3 (2794)
Heating Pressure Drop Ft/Head
(kPa) 1.9 (5.68) 1.0 (2.99) 2.3 (6.87) 1.3 (3.88)
Cooling Water Content
Gal (L)
1.6 (6.06) 2.4 (9.09) 2.8 (10.6) 3.3 (12.49)
Heating Water Content 0.8 (3.03) 1.2 (4.54) 1.4 (5.3) 1.7 (6.44)
Physical Data
Cooling Water
Connections
In
Inch
(mm)
1-1/4 (31.75)
Out
Heating Water
Connections
In 1 (25.4)
Out
Condensate Drainage
Connection 1 (25.4)
Dimensions
L
Refer to Dimensions section (Pg. 30-32)
W
H
Weight lbs (kg) 353 (160.12) 445 (201.85) 530 (240.40) 600 (272.16)
4PIPE SYSTEMS
4-Row Cooling + 2-Row Heating
8

SHAU(6R+1)-XXXPXAECMXL
Note:
a. Cooling conditions:
Air temperature: 80°F DB/67°F WB
(27°C DB/19°C WB).
Water inlet/outlet: 45°F/55°F
(7°C/12°C).
b. Heating conditions:
Air temperature: 70°F (21°C).
Water inlet/outlet temperature:
180°F /140°F (82°C/60°C).
c. All dimensions are approximate
within 1/16 of an inch of those
indicated.
Table 5: SHAU(6R+1) specifications
4PIPE SYSTEMS
6-Row Cooling + 1-Row Heating
Size 200 400 600 800
Unit
Configuration
Configuration 4 pipes
Number of fan blowers 1 2
Power supply (V/Ph/Hz) 220/1/60
Performance Data
Air
Air Flow CFM
(m/h) 1153 (1959) 2303 (3913) 3497 (5941) 4607 (7827)
External Static Pressure in.wg
(Pa) 0.5 (124.42)
Cooling
Total Cooling Capacity
BTU/Hr
(kW)
52828 (15.48) 105441 (30.9) 146624 (42.97) 195855 (57.4)
Sensible Cooling
Capacity 34293 (10.05) 68369 (20.04) 97345 (28.53) 129338 (37.91)
Heating
Heating Capacity 45256 (13.26) 83881 (24.58) 119615 (35.06) 153513 (44.99)
Sound
Max. sound pressure dB(A) 67 74 75 77
Max. sound power 76 83 84 86
Electrical
Max. power input W 375 500 1000
Full Load Amps (FLA)
@ 220V
A
1.63 2.17 4.34
Min. Circuit Ampacity
(MCA) 2.04 2.71 5.43
Max. Overcurrent
Protection (MOP) 15
Hydronic
Cooling Water Flow Rate GPM
(L/h) 10.4 (2362) 20.8 (4724) 29.0 (6587) 38.7 (8790)
Cooling Pressure Drop Ft/Head
(kPa) 3.0 (8.96) 12.6 (37.65) 3.7 (11.06) 7.0 (20.92)
Heating Water Flow Rate GPM
(L/h) 2.3 (522) 4.2 (954) 6.0 (1363) 7.7 (1749)
Heating Pressure Drop Ft/Head
(kPa) 2.9 (8.67) 1.6 (4.78) 3.4 (10.16) 1.9 (5.68)
Cooling Water Content
Gal (L)
2.4 (9.08) 3.6 (13.63) 4.2 (15.9) 5.0 (18.93)
Heating Water Content 0.4 (1.51) 0.6 (2.27) 0.7 (2.65) 0.9 (3.41)
Physical Data
Cooling Water
Connections
In
Inch
(mm)
1-1/4 (31.75)
Out
Heating Water
Connections
In 1 (25.4)
Out
Condensate Drainage
Connection 1 (25.4)
Dimensions
L
Refer to Dimensions section (Pg. 30-32)
W
H
Weight lbs (kg) 365 (165.56) 460 (208.65) 550 (249.47) 620 (281.23)
9

COOLING CAPACITY - 1000 BTU/Hr (0.29 kW)
SHAU(4R)
Size
NOMINAL
AIR FLOW
45°F (7.2°C) ENTERING WATER TEMPERATURE
FLOW RATE PD 80°F DB/50% RH
(26.7°C DB/50% RH)
75°F DB/50% RH
(23.9°C DB/50% RH)
CFM (m/h) GPM (L/h) Ft/Head
(kPa)
TH SH TR TH SH TR
MBH (kW) MBH (kW) °F (°C) MBH (kW) MBH (kW) °F (°C)
200 1321
(2244)
7 (1589.9) 2.9 (8.67) 44.9 (13.16) 30.8 (9.03) 12.7 (-10.7) 35.4 (10.37) 27.6 (8.09) 10.0 (-12.2)
9 (2044.1) 4.6 (13.75) 48.2 (14.13) 32.6 (9.56) 10.6 (-11.9) 37.4 (10.96) 28.4 (8.32) 8.2 (-13.2)
11 (2498.4) 6.6 (19.72) 50.6 (14.83) 33.7 (9.88) 9.1 (-12.7) 39.2 (11.49) 29.1 (8.53) 7.1 (-13.8)
400 2417
(4107)
9 (2044.1) 1.9 (5.68) 71.1 (20.84) 50.6 (14.83) 15.7 (-9.1) 57.5 (16.85) 45.7 (13.39) 12.7 (-10.7)
11 (2498.4) 2.7 (8.07) 77.5 (22.71) 53.9 (15.8) 14.0 (-10) 61.4 (17.99) 48.5 (14.21) 11.1 (-11.6)
13 (2952.6) 3.6 (10.76) 82.1 (24.06) 56.3 (16.5) 12.5 (-10.8) 64.2 (18.82) 50.3 (14.74) 9.8 (-12.3)
600 3739
(63.53)
13 (2952.6) 3.9 (11.65) 103.6 (30.36) 74.7 (21.89) 17.1 (-8.3) 85.1 (24.94) 68.0 (19.93) 13.0 (-10.6)
15 (3406.9) 5.1 (15.24) 110.4 (32.36) 78.1 (22.89) 15.8 (-9) 89.5 (26.23) 71.0 (20.81) 11.8 (-11.2)
17 (3861.1) 6.3 (18.83) 117.3 (34.38) 81.7 (23.94) 13.7 (-10.2) 92.7 (27.17) 73.3 (21.48) 10.8 (-11.8)
800 4835
(8215)
15 (3406.9) 2.6 (7.77) 126.4 (37.04) 92.7 (27.17) 17.9 (-7.8) 104.0 (30.48) 84.4 (24.74) 13.8 (-10.1)
17 (3861.1) 3.2 (9.56) 133.9 (39.24) 96.3 (28.22) 16.7 (-8.5) 108.9 (31.92) 87.8 (25.73) 12.7 (-10.7)
19 (4315.4) 4.0 (11.95) 140.7 (41.24) 99.8 (29.25) 14.7 (-9.6) 113.1 (33.15) 90.7 (26.58) 11.8 (-11.2)
COOLING CAPACITY - 1000 BTU/Hr (0.29 kW)
SHAU(4R)
Size
NOMINAL
AIR FLOW
42°F (5.6°C) ENTERING WATER TEMPERATURE
FLOW RATE PD 80°F DB/50% RH
(26.7°C DB/50% RH)
75°F DB/50% RH
(23.9°C DB/50% RH)
CFM (m/h) GPM (L/h) Ft/Head
(kPa)
TH SH TR TH SH TR
MBH (kW) MBH (kW) °F (°C) MBH (kW) MBH (kW) °F (°C)
200 1321
(2244)
6 (1362.7) 2.2 (6.57) 45.4 (13.31) 31.0 (9.09) 15.2 (-9.3) 38.4 (11.25) 28.3 (8.29) 12.8 (-10.7)
8 (1817.0) 3.8 (11.36) 51.2 (15.01) 33.8 (9.91) 12.8 (-10.7) 41.9 (12.28) 30.6 (8.97) 10.5 (-11.9)
10 (2271.2) 5.6 (16.73) 54.6 (16) 35.6 (10.43) 11.0 (-11.7) 44.1 (12.92) 31.6 (9.26) 8.9 (-12.8)
400 2417
(4107)
8 (1817.0) 1.5 (4.48) 71.4 (20.93) 51.1 (14.98) 17.9 (-7.8) 61.4 (17.99) 46.2 (13.54) 15.4 (-9.2)
10 (2271.2) 2.3 (6.87) 80.4 (23.56) 55.3 (16.21) 16.1 (-8.8) 67.7 (19.84) 50.3 (14.74) 13.6 (-10.2)
12 (2725.5) 3.1 (9.26) 86.2 (25.26) 58.1 (17.03) 14.4 (-9.8) 71.8 (21.04) 52.9 (15.5) 12.0 (-11.1)
600 3739
(63.53)
12 (2725.5) 3.4 (10.16) 106.7 (31.27) 76.6 (22.45) 17.8 (-7.9) 91.9 (26.93) 69.3 (20.31) 15.3 (-9.3)
14 (3179.7) 4.5 (13.45) 115.1 (33.73) 80.5 (23.59) 16.5 (-8.6) 98.5 (28.87) 73.5 (21.54) 14.1 (-9.9)
16 (3634.0) 5.7 (17.03) 122.6 (35.93) 84.0 (24.62) 15.3 (-9.3) 103.3 (30.27) 76.7 (22.48) 12.9 (-10.6)
800 4835
(8215)
14 (3179.7) 2.3 (6.87) 128.9 (37.78) 94.6 (27.72) 18.4 (-7.6) 112.7 (33.03) 86.0 (25.2) 16.1 (-8.8)
16 (3634.0) 2.9 (8.67) 138.5 (40.59) 99.1 (29.04) 17.3 (-8.2) 119.0 (34.88) 90.1 (26.41) 14.9 (-9.5)
18 (4088.2) 3.6 (10.76) 147.1 (43.11) 103.1 (30.22) 16.4 (-8.7) 126.1 (36.96) 94.7 (27.75) 14.0 (-10)
Table 6: SHAU(4R) cooling capacity at 45°F (7.2°C) entering water
Table 7: SHAU(4R) cooling capacity at 42°F (5.6°C) entering water
TH= total cooling capacity SH= sensible cooling capacity
TR= water temperature rise PD= water pressure drop
TH= total cooling capacity SH= sensible cooling capacity
TR= water temperature rise PD= water pressure drop
4ROW COIL
COOLING PERFORMANCE
10

COOLING CAPACITY - 1000 BTU/Hr (0.29 kW)
SHAU(6R)
Size
NOMINAL
AIR FLOW
45°F (7.2°C) ENTERING WATER TEMPERATURE
FLOW RATE PD 80°F DB/50% RH
(26.7°C DB/50% RH)
75°F DB/50% RH
(23.9°C DB/50% RH)
CFM (m/h) GPM (L/h) Ft/Head
(kPa)
TH SH TR TH SH TR
MBH (kW) MBH (kW) °F (°C) MBH (kW) MBH (kW) °F (°C)
200 1209
(2054)
7 (1589.9) 1.4 (4.18) 45.9 (13.45) 30.9 (9.06) 13.0 (-10.6) 36.8 (10.79) 27.8 (8.15) 10.4 (-12)
9 (2044.1) 2.3 (6.87) 49.8 (14.59) 32.8 (9.61) 11.0 (-11.7) 39.0 (11.43) 28.8 (8.44) 8.6 (-13)
11 (2498.4) 3.3 (9.86) 52.3 (15.33) 34.0 (9.96) 9.4 (-12.6) 40.6 (11.9) 29.4 (8.62) 7.3 (-13.7)
400 2341
(3977)
9 (2044.1) 2.8 (8.37) 74.7 (21.89) 52.8 (15.47) 16.5 (-8.6) 63.1 (18.49) 48.1 (14.1) 13.9 (-10.1)
11 (2498.4) 4.0 (11.95) 82.3 (24.12) 56.4 (16.53) 14.9 (-9.5) 67.9 (19.9) 51.2 (15.01) 12.2 (-11)
13 (2952.6) 5.4 (16.14) 88.3 (25.88) 59.4 (17.41) 13.5 (-10.3) 71.4 (20.93) 53.6 (15.71) 10.9 (-11.7)
600 3577
(6077)
13 (2952.6) 0.9 (2.69) 106.7 (31.27) 76.5 (22.42) 16.3 (-8.7) 87.6 (25.67) 69.3 (20.31) 13.4 (-10.3)
15 (3406.9) 1.1 (3.29) 113.2 (33.18) 79.7 (23.36) 15.0 (-9.4) 92.0 (26.96) 72.3 (21.19) 12.2 (-11)
17 (3861.1) 1.4 (4.18) 119.8 (35.11) 83.1 (24.35) 14.0 (-10) 95.5 (27.99) 74.8 (21.92) 11.2 (-11.6)
800 4683
(7956)
15 (3406.9) 1.3 (3.88) 132.5 (38.83) 96.9 (28.4) 17.6 (-8) 110.2 (32.3) 87.3 (25.59) 14.6 (-9.7)
17 (3861.1) 1.6 (4.78) 140.8 (41.26) 100.8 (29.54) 16.4 (-8.7) 116.4 (34.11) 91.5 (26.82) 13.6 (-10.2)
19 (4315.4) 2.0 (5.98) 148.4 (43.49) 104.5 (30.63) 15.5 (-9.2) 121.0 (35.46) 94.7 (27.75) 12.6 (-10.8)
COOLING CAPACITY - 1000 BTU/Hr (0.29 kW)
SHAU(6R)
Size
NOMINAL
AIR FLOW
42°F (5.6°C) ENTERING WATER TEMPERATURE
FLOW RATE PD 80°F DB/50% RH
(26.7°C DB/50% RH)
75°F DB/50% RH
(23.9°C DB/50% RH)
CFM (m/h) GPM (L/h) Ft/Head
(kPa)
TH SH TR TH SH TR
MBH (kW) MBH (kW) °F (°C) MBH (kW) MBH (kW) °F (°C)
200 905
(1538)
6 (1362.7) 1.1 (3.29) 46.5 (13.63) 31.3 (9.17) 15.5 (-9.2) 39.6 (11.61) 28.5 (835) 13.2 (-10.4)
8 (1817.0) 1.8 (5.38) 52.2 (15.3) 34.1 (9.99) 13.1 (-10.5) 49.3 (14.45) 36.3 (10.64) 16.4 (-8.7)
10 (2271.2) 2.8 (8.37) 56.0 (16.41) 35.9 (10.52) 11.2 (-11.6) 43.3 (12.69) 30.8 (9.03) 10.9 (-11.7)
400 1814
(3082)
8 (1817.0) 2.3 (6.87) 74.9 (21.95) 53.6 (15.71) 18.7 (-7.4) 61.1 (17.91) 43.6 (12.78) 12.2 (-11)
10 (2271.2) 3.4 (10.16) 84.3 (24.71) 57.8 (16.94) 16.9 (-8.4) 72.6 (21.28) 52.5 (15.39) 14.5 (-9.7)
12 (2725.5) 4.7 (14.05) 92.0 (26.96) 61.4 (17.99) 15.3 (-9.3) 78.4 (22.98) 56.1 (16.44) 13.1 (-10.5)
600 1879
(3192)
12 (2725.5) 0.8 (2.39) 107.9 (31.62) 77.6 (22.74) 18.0 (-7.8) 94.0 (27.55) 70.3 (20.6) 15.7 (-9.1)
14 (3179.7) 1 (2.99) 118.5 (34.73) 82.5 (24.18) 16.9 (-8.4) 100.8 (29.54) 74.6 (21.86) 14.4 (-9.8)
16 (3634.0) 1.3 (3.88) 126.8 (37.16) 86.4 (25.32) 15.9 (-8.9) 117.3 (34.38) 88.4 (25.91) 16.8 (-8.4)
800 2386
(4054)
14 (3179.7) 1.1 (3.29) 133.7 (39.18) 98.5 (28.87) 19.1 (-7.2) 106.4 (31.18) 78.3 (22.95) 13.3 (-10.4)
16 (3634.0) 1.4 (4.18) 144.0 (42.2) 103.2 (30.24) 18.0 (-7.8) 126.0 (36.93) 93.9 (27.52) 15.8 (-9)
18 (4088.2) 1.8 (5.38) 153.4 (44.96) 107.5 (31.51) 17.0 (-8.3) 132.5 (132.5) 98.0 (28.72) 14.7 (-9.6)
Table 8: SHAU(6R) cooling capacity at 45°F (7.2°C) entering water
Table 9: SHAU(6R) cooling capacity at 42°F (5.6°C) entering water
TH= total cooling capacity SH= sensible cooling capacity
TR= water temperature rise PD= water pressure drop
TH= total cooling capacity SH= sensible cooling capacity
TR= water temperature rise PD= water pressure drop
6ROW COIL
11

SHAU(4R+1)
SHAU(4R+2)
HEATING PERFORMANCE
HEATING CAPACITY - 1000 BTU/Hr (0.29 kW)
SHAU(4R)
Size
NOMINAL AIR
FLOW FLOW RATE PD ENTERING WATER TEMPERATURE
CFM (m/h) GPM (L/h) Ft/Head
(kPa)
180°F
(82.2°C)
160°F
(71.1°C)
140°F
(60°C)
120°F
(48.9°C)
200 1209
(2054)
3 (681.4) 1.4 (4.18) 59.5 (15.3) 53.9 (12.2) 47.6 (8.7) 37.1 (2.8)
5 (1135.6) 3.5 (10.46) 76.9 (24.9) 67.8 (19.9) 55.6 (13.1) 41.4 (5.2)
7 (1589.9) 6.4 (19.13) 86.1 (30.1) 73.9 (23.3) 59.6 (15.3) 43.4 (6.3)
400 2341
(3977)
7 (1589.9) 1.2 (3.59) 126.9 (52.7) 111.4 (44.1) 95.0 (35) 71.1 (21.7)
9 (2044.1) 1.8 (5.38) 141.8 (61) 121.4 (49.7) 101.4 (38.6) 74.6 (23.7)
11 (2498.4) 2.6 (7.77) 152.2 (66.8) 129.5 (54.2) 105.9 (41.1) 76.9 (24.9)
600 3577
(6077)
9 (2044.1) 2.0 (5.98) 171.7 (77.6) 153.8 (67.7) 130.3 (54.6) 101.1 (38.4)
11 (2498.4) 2.9 (8.67) 190.4 (88) 168.6 (75.9) 140.6 (60.3) 105.6 (40.9)
13 (2952.6) 4.0 (11.95) 205.8 (96.6) 178.4 (81.3) 147.0 (63.9) 109.0 (42.8)
800 4683
(7956)
11 (2498.4) 1.1 (3.29) 214.0 (101.1) 191.7 (88.7) 165.3 (74.1) 127.4 (53)
13 (2952.6) 1.4 (4.18) 230.1 (110.1) 211.0 (99.4) 177.2 (80.7) 133.3 (56.3)
15 (3406.9) 1.9 (5.68) 254.4 (123.6) 220.5 (104.7) 183.7 (84.3) 136.9 (58.3)
HEATING CAPACITY - 1000 BTU/Hr (0.29 kW)
SHAU(4R+1)
Size
NOMINAL AIR
FLOW FLOW RATE PD ENTERING WATER TEMPERATURE
CFM (m/h) GPM (L/h) Ft/Head
(kPa)
180°F
(82.2°C)
160°F
(71.1°C)
140°F
(60°C)
120°F
(48.9°C)
200 1265
(2149)
3 (681.4) 4.8 (14.34) 50.4 (10.2) 43.9 (6.6) 36.7 (2.6) 27.4 (-2.6)
5 (1135.6) 12.0 (35.86) 59.9 (15.5) 51.0 (10.6) 41.0 (5) 29.5 (-1.4)
7 (1589.9) 21.9 (65.44) 64.5 (18.1) 54.3 (12.4) 42.9 (6.1) 30.5 (-0.8)
400 2379
(4042)
7 (1589.9) 4.0 (11.95) 98.3 (36.8) 84.4 (29.1) 68.6 (20.3) 50.0 (10)
9 (2044.1) 6.3 (18.83) 106.3 (41.3) 90.0 (32.2) 71.9 (22.2) 51.5 (10.8)
11 (2498.4) 9.1 (27.19) 111.2 (44) 93.7 (34.3) 73.9 (23.3) 52.5 (11.4)
600 3658
(6215)
9 (2044.1) 7.1 (21.22) 135.6 (57.6) 118.6 (48.1) 96.3 (35.7) 70.7 (21.5)
11 (2498.4) 10.2 (30.48) 145.4 (63) 125.0 (51.7) 100.5 (38.1) 72.7 (22.6)
13 (2952.6) 13.8 (41.24) 152.9 (67.2) 129.4 (54.1) 103.6 (39.8) 74.0 (23.3)
800 4759
(8086)
11 (2498.4) 3.7 (11.06) 169.9 (76.6) 148.7 (64.8) 120.9 (49.4) 88.6 (31.4)
13 (2952.6) 5.0 (14.94) 179.9 (82.2) 155.3 (68.5) 125.5 (51.9) 90.8 (32.7)
15 (3406.9) 6.5 (168.84) 190.2 (87.9) 161.0 (71.7) 129.1 (53.9) 92.3 (33.5)
Table 10: SHAU(4R+1) heating capacity 70°F (21.1°C) entering water
Table 11: SHAU(4R+2) heating capacity 70°F (21.1°C) entering water
12

SHAU(6R+1)
HEATING CAPACITY - 1000 BTU/Hr (0.29 kW)
SHAU(6R+1)
Size
NOMINAL AIR
FLOW FLOW RATE PD ENTERING WATER TEMPERATURE
CFM (m/h) GPM (L/h) Ft/Head
(kPa)
180°F
(82.2°C)
160°F
(71.1°C)
140°F
(60°C)
120°F
(48.9°C)
200 1153
(1959)
3 (681.4) 4.8 (14.34) 48.1 (8.9) 41.8 (5.4) 34.7 (1.5) 25.8 (-3.4)
5 (1135.6) 12.0 (35.86) 56.7 (13.7) 47.9 (8.8) 38.4 (3.6) 27.6 (-2.4)
7 (1589.9) 21.9 (65.44) 60.7 (15.9) 50.8 (10.4) 40.1 (4.5) 37.2 (2.9)
400 2303
(3913)
7 (1589.9) 4.0 (11.95) 97.1 (36.2) 82.8 (28.2) 67.1 (19.5) 39.6 (4.2)
9 (2044.1) 6.3 (18.83) 104.3 (40.2) 88.0 (31.1) 70.3 (21.3) 50.3 (10.2)
11 (2498.4) 9.1 (27.19) 108.8 (42.7) 91.5 (33.1) 72.3 (22.4) 68.7 (20.4)
600 3497
(5941)
9 (2044.1) 7.1 (21.22) 132.8 (56) 115.5 (46.4) 94.1 (34.5) 51.2 (10.7)
11 (2498.4) 10.2 (30.48) 142.3 (61.3) 121.6 (49.8) 97.9 (36.6) 70.5 (21.4)
13 (2952.6) 13.8 (41.24) 148.8 (64.9) 126.1 (52.3) 100.6 (38.1) 86.8 (30.4)
800 4607
(7827)
11 (2498.4) 3.7 (11.06) 167.9 (75.5) 146.8 (63.8) 118.6 (48.1) 71.8 (22.1)
13 (2952.6) 5.0 (14.94) 177.6 (80.9) 152.3 (66.98) 122.8 (50.4) 88.8 (31.6)
15 (3406.9) 6.5 (19.42) 185.3 (85.2) 157.9 (69.9) 126.1 (52.3) 90.2 (32.3)
Table 12: SHAU(6R+1) heating capacity 70°F (21.1°C) entering water
13

Model SHAU-200
Speed 800 RPM 900 RPM 1000 RPM 1100 RPM 1200 RPM 1300 RPM 1400 RPM 1500 RPM
Sound Power
dB(A) 53.6 57.3 64.4 68.7 71.3 70.7 70.5 71.3
Sound Power in 1/3 Octave-bands under ESP:12OPa (dB)
20.0 Hz 14.4 9.1 13.0 12.5 23.7 15.0 17.2 14.4
25.0 Hz 13.0 12.9 12.5 14.4 19.2 15.4 15.0 16.1
31.5 Hz 14.0 10.8 21.0 23.1 25.3 19.6 20.4 22.9
40.0 Hz 17.3 23.7 21.2 24.6 27.8 25.7 27.4 23.9
50.0 Hz 26.9 30.7 32.0 31.0 40.2 33.5 37.5 30.2
63.0 Hz 29.8 34.2 38.0 41.2 44.7 40.6 42.6 41.6
80.0 Hz 33.2 40.0 40.8 43.5 43.0 45.3 45.3 47.1
100.0 Hz 31.2 37.0 39.5 42.8 46.4 45.2 45.0 41.4
125.0 Hz 31.1 36.1 42.1 42.6 45.4 45.1 46.1 46.5
160.0 Hz 39.7 39.7 45.2 47.5 49.9 50.5 50.0 48.8
200.0 Hz 40.5 42.4 50.7 53.7 54.9 54.3 56.5 55.3
250.0 Hz 39.1 42.7 50.0 54.8 57.0 57.2 56.0 55.5
315.0 Hz 44.7 43.4 51.7 57.6 62.2 60.2 58.2 59.8
400.0 Hz 41.3 43.6 49.3 55.2 57.1 55.8 55.2 56.6
500.0 Hz 43.8 44.8 49.9 56.1 58.2 56.6 57.3 56.9
630.0 Hz 48.4 50.3 55.2 60.5 61.4 61.1 60.9 61.5
800.0 Hz 46.2 46.4 53.1 57.7 59.7 59.7 59.5 60.5
1000.0 Hz 45.9 46.9 54.4 58.1 61.5 61.1 61.0 61.4
1250.0 Hz 44.6 46.2 54.2 57.9 62.1 60.5 60.4 61.9
1600.0 Hz 42.6 46.2 54.4 57.5 60.0 59.6 59.2 61.2
2000.0 Hz 42.6 45.7 53.2 57.1 59.9 59.5 59.0 60.2
2500.0 Hz 40.9 44.3 53.7 57.6 60.5 60.0 59.5 60.3
3150.0 Hz 37.9 41.9 52.1 56.8 60.0 59.2 59.5 59.5
4000.0 Hz 35.1 38.3 48.6 53.9 57.5 56.8 56.8 57.2
5000.0 Hz 29.2 32.8 43.5 48.5 52.7 51.8 51.5 53.2
6300.0 Hz 26.2 31.6 41.9 46.7 51.0 50.5 50.1 50.9
8000.0 Hz 21.6 27.6 36.8 42.5 46.7 46.0 45.9 46.4
10000.0 Hz 16.4 23.8 30.8 35.9 39.9 39.2 39.4 39.9
12500.0 Hz 12.0 19.7 25.8 29.7 34.2 33.3 33.2 34.1
16000.0 Hz 16.7 21.7 19.8 22.6 25.9 25.3 24.9 27.3
SOUND DATA
Table 13: SHAU-200 sound power
14

Model SHAU-400
Speed 800 RPM 900 RPM 1000 RPM 1100 RPM 1200 RPM 1300 RPM 1350 RPM 1400 RPM
Sound Power
dB(A) 62.1 65.4 73.2 78.1 80.7 79.7 79.6 79.8
Sound Power in 1/3 Octave-bands under ESP:12OPa (dB)
20.0 Hz 23.9 20.6 31.4 33.4 24.7 34.5 38.2 38.2
25.0 Hz 15.4 22.3 25.1 25.1 27.5 29.6 28.9 28.9
31.5 Hz 24.5 23.2 27.3 33.0 30.3 33.4 35.7 35.7
40.0 Hz 26.5 28.8 32.7 34.1 36.9 35.2 38.3 38.3
50.0 Hz 31.9 39.3 36.6 38.3 37.6 40.9 47.0 47.0
63.0 Hz 36.4 38.1 43.2 46.0 46.5 47.6 46.7 46.7
80.0 Hz 42.8 45.1 49.4 50.2 53.1 50.7 54.8 54.8
100.0 Hz 41.1 47.3 49.5 54.8 57.9 56.4 59.0 59.0
125.0 Hz 45.4 47.7 55.3 58.2 60.1 58.9 60.9 60.9
160.0 Hz 46.1 50.1 54.1 60.1 63.3 61.1 60.1 60.1
200.0 Hz 49.5 50.8 58.0 65.5 65.1 66.6 66.7 66.7
250.0 Hz 50.0 54.6 59.0 63.7 65.0 65.8 64.1 64.1
315.0 Hz 51.5 55.5 59.4 65.3 66.8 65.3 66.4 66.4
400.0 Hz 50.7 53.8 58.3 63.8 65.3 65.3 65.0 65.0
500.0 Hz 49.6 53.1 58.8 63.4 65.2 64.8 65.3 65.3
630.0 Hz 50.0 54.2 61.2 65.3 67.7 66.4 66.8 66.8
800.0 Hz 56.8 55.9 64.1 68.7 71.6 69.5 70.4 70.4
1000.0 Hz 51.1 54.8 64.0 68.2 71.3 69.7 69.7 69.7
1250.0 Hz 49.2 54.3 63.9 68.0 71.7 70.2 70.5 70.5
1600.0 Hz 49.4 54.8 63.2 67.4 70.6 69.5 69.5 69.5
2000.0 Hz 47.9 52.5 61.9 66.5 69.4 68.1 68.3 68.3
2500.0 Hz 46.2 51.2 61.8 66.7 69.0 68.1 68.6 68.6
3150.0 Hz 44.5 49.4 61.0 65.4 69.4 67.7 67.8 67.8
4000.0 Hz 41.2 45.9 59.4 64.2 67.8 66.4 66.3 66.3
5000.0 Hz 36.8 42.2 55.7 61.2 64.9 63.2 63.3 63.3
6300.0 Hz 31.1 36.9 50.8 56.6 60.2 58.9 58.9 58.9
8000.0 Hz 25.4 32.0 45.9 52.4 56.3 54.8 54.6 54.6
10000.0 Hz 19.9 25.7 40.1 47.4 51.8 49.7 49.7 49.7
12500.0 Hz 16.0 19.5 33.3 40.6 45.4 43.1 43.4 43.4
16000.0 Hz 25.7 25.8 27.9 32.4 36.7 34.9 34.8 34.8
Table14: SHAU-400 sound power
15

Model SHAU-600
Speed 800 RPM 900 RPM 1000 RPM 1100 RPM 1200 RPM 1300 RPM 1350 RPM 1400 RPM
Sound Power
dB(A) 60.6 63.9 71.7 76.6 79.2 78.2 78.1 78.3
Sound Power in 1/3 Octave-bands under ESP:12OPa (dB)
20.0 Hz 22.4 19.1 29.9 31.9 23.2 33.0 36.7 36.7
25.0 Hz 13.9 20.8 23.6 23.6 26.0 28.1 27.4 27.4
31.5 Hz 23.0 21.7 25.8 31.5 28.8 31.9 34.2 34.2
40.0 Hz 25.0 27.3 31.2 32.6 35.4 33.7 36.8 36.8
50.0 Hz 30.4 37.8 35.1 36.8 36.1 39.4 45.5 45.5
63.0 Hz 34.9 36.6 41.7 44.5 45.0 46.1 45.2 45.2
80.0 Hz 41.3 43.6 47.9 48.7 51.6 49.2 53.3 53.3
100.0 Hz 39.6 45.8 48.0 53.3 56.4 54.9 57.5 57.5
125.0 Hz 43.9 46.2 53.8 56.7 58.6 57.4 59.4 59.4
160.0 Hz 44.6 48.6 52.6 58.6 61.8 59.6 58.6 58.6
200.0 Hz 48.0 49.3 56.5 64.0 63.6 65.1 65.2 65.2
250.0 Hz 48.5 53.1 57.5 62.2 63.5 64.3 62.6 62.6
315.0 Hz 50.0 54.0 57.9 63.8 65.3 63.8 64.9 64.9
400.0 Hz 49.2 52.3 56.8 62.3 63.8 63.8 63.5 63.5
500.0 Hz 48.1 51.6 57.3 61.9 63.7 63.3 63.8 63.8
630.0 Hz 48.5 52.7 59.7 63.8 66.2 64.9 65.3 65.3
800.0 Hz 55.3 54.4 62.6 67.2 70.1 68.0 68.9 68.9
1000.0 Hz 49.6 53.3 62.5 66.7 69.8 68.2 68.2 68.2
1250.0 Hz 47.7 52.8 62.4 66.5 70.2 68.7 69.0 69.0
1600.0 Hz 47.9 53.33 61.7 65.9 69.1 68.0 68.0 68.0
2000.0 Hz 46.4 51.0 60.4 65.0 67.9 66.6 66.8 66.8
2500.0 Hz 44.7 49.7 60.3 65.2 67.5 66.6 67.1 67.1
3150.0 Hz 43.0 47.9 59.5 63.9 67.9 66.2 66.3 66.3
4000.0 Hz 39.7 44.4 57.9 62.7 66.3 64.9 64.8 64.8
5000.0 Hz 35.3 40.7 54.2 59.7 63.4 61.7 61.8 61.8
6300.0 Hz 29.6 35.4 49.3 50.9 54.8 53.3 53.1 53.1
8000.0 Hz 23.9 30.5 44.4 50.9 54.8 53.3 53.1 53.1
10000.0 Hz 18.4 24.2 38.6 45.9 50.3 48.2 48.2 48.2
12500.0 Hz 14.5 18.0 31.8 39.1 43.9 41.6 41.9 41.9
16000.0 Hz 24.2 24.3 26.4 30.9 35.2 33.4 33.3 33.3
Table 15: SHAU-600 sound power
16

Model SHAU-800
Speed 800 RPM 900 RPM 1000 RPM 1100 RPM 1200 RPM 1300 RPM 1350 RPM 1400 RPM
Sound Power
dB(A) 65.1 68.4 76.2 81.1 83.7 82.7 82.6 82.8
Sound Power in 1/3 Octave-bands under ESP:12OPa (dB)
20.0 Hz 26.9 23.6 34.4 36.4 27.7 37.5 41.2 41.2
25.0 Hz 18.4 25.3 28.1 28.1 30.5 32.6 31.9 31.9
31.5 Hz 27.5 26.2 30.3 36.0 33.3 36.4 38.7 38.7
40.0 Hz 29.5 31.8 35.7 37.1 39.9 38.2 41.3 41.3
50.0 Hz 34.9 42.3 39.6 41.3 40.6 43.9 50.0 50.0
63.0 Hz 39.4 41.1 46.2 49.0 49.5 50.6 49.7 49.7
80.0 Hz 45.8 48.1 52.4 53.2 56.1 53.7 57.8 57.8
100.0 Hz 44.1 50.3 52.5 57.8 60.9 59.4 62.0 62.0
125.0 Hz 48.4 50.7 58.3 61.2 63.1 61.9 63.9 63.9
160.0 Hz 49.1 53.1 57.1 63.1 66.3 64.1 63.1 63.1
200.0 Hz 52.5 53.8 61.0 68.5 68.1 69.6 69.7 69.7
250.0 Hz 53.0 57.6 62.0 66.7 68.0 68.8 67.1 67.1
315.0 Hz 54.5 58.5 62.4 68.3 69.8 68.3 69.4 69.4
400.0 Hz 53.7 56.8 61.3 66.8 68.3 68.3 68.0 68.0
500.0 Hz 52.6 56.1 61.8 66.4 68.2 67.8 68.3 68.3
630.0 Hz 53.0 57.2 64.2 68.3 70.7 69.4 69.8 69.8
800.0 Hz 59.8 58.9 67.1 71.7 74.6 72.5 73.4 73.4
1000.0 Hz 54.1 57.8 67.0 71.2 74.3 72.7 72.7 72.7
1250.0 Hz 52.2 57.3 66.9 71.0 74.7 73.2 73.5 73.5
1600.0 Hz 52.4 57.8 66.2 70.4 73.6 72.5 72.5 72.5
2000.0 Hz 50.9 55.5 64.9 69.5 72.4 71.1 71.3 71.3
2500.0 Hz 49.2 54.2 64.8 69.7 72.0 71.1 71.6 71.6
3150.0 Hz 47.5 52.4 64.0 68.4 72.4 70.7 70.8 70.8
4000.0 Hz 44.2 48.9 62.4 67.2 70.8 69.4 69.3 69.3
5000.0 Hz 39.8 45.2 58.7 64.2 67.9 66.2 66.3 66.3
6300.0 Hz 34.1 39.9 53.8 59.6 63.2 61.9 61.9 61.9
8000.0 Hz 28.4 35.0 48.9 55.4 59.3 57.8 57.6 57.6
10000.0 Hz 22.9 28.7 43.1 50.4 54.8 52.7 52.7 52.7
12500.0 Hz 19.0 22.5 36.3 43.6 48.4 46.1 46.4 46.4
16000.0 Hz 28.7 28.8 30.9 35.4 39.7 37.9 37.8 37.8
Table 16: SHAU-800 sound power
17

The Surna Mini Air Handler (SHAU) is an ideal air
handling unit for suspended ceiling or ground-mounted
installation and suitable for ducted or ductless air
distribution. It is constructed of sandwich panels to
achieve low noise level during operation as well as
wipedown construction to help meet GMP standards.
The SHAU is shipped completely assembled and motor
wiring is introduced into the control box to reduce
on-site installation time and manpower. Every unit is
thoroughly inspected and tested to prevent potential
problems during startup. The unit contains bottom
panels that provide easy access to fans, motors and
filters.
Framework - a frameless structure is used. The panel
is an integrated folding steel structure and tested to
ensure that there is minimal air leakage.
Casing - double wall construction and consisting of two
panels with internal insulation. Each panel is 1 in (25.4
mm) thick. The inner and outer panels are made of plain
galvanized steel and pre-coated galvanized steel. The
insulation consists of a high-pressure polyurethane foam
sandwiched in between to reinforce the panel.
Filter - washable, double-layer acrylic nylon with
aluminum frame. G4 (Merv 8) or F8 (Merv 14) filter is
optional.
Cooling coil - standard Cu/Al 3/8in (9.5mm) OD. The
manifolds are made of steel with threaded connections.
The cooling coil is provided with a manual air-vent valve.
The aluminum fins are pre-coated for protection by a
hydrophilic blue fin process. Coils are tested at 435 PSI
(2999 kPa) and recommended operating at no more than
232 PSI (1599.5 kPa).
Drain pan - made of single wall painted steel with 3/16 in
(1.29 mm) insulation on outer wall. The drain pan extends
the full length and width of the coil and is sloped for
positive drainage and includes a 3/4 in (19 mm) male pipe
threaded galvanized drain connector.
Fan section - mainly constructed of housing, impeller,
mounting feet, and DC motor. The housing is made of
hot-dip galvanized steel. The side panel includes inlet
cones in which inlet conditions are designed for optimum
aerodynamics. The scroll is fixed on the side panel by
spot welding.
The wheel is made of hot-dipped galvanized steel.
The forward curved blades features an advanced
aerodynamic design for maximum eciency and
minimum noise level. The impeller is fixed on the center
plate and on the end ring with riveting compression.
The impeller is designed for maximum strength and can
withstand continuous operation with maximum power.
All impellers and the motor are fully balanced according
to the ANSI/AMCA-204 standard.
The mounting feet are made of galvanized steel with a
unique design to ensure adequate strength.
Control system (W type) - 0~10VDC motor modulating
signal is received from a controller which is powered by
R and C or by indoor room terminals Vsp and GND. If
the input signal is greater than 2VDC, the unit is turned
on. If the control signal is lower than 1.5VDC, the unit is
turned o. Motor speed depends on input signal. Motor
RPM can be set from 300-1500. The unit is equipped
with a 40VA 240 24/12VAC transformer as standard
which supplies power input to the thermostat and other
devices.
TECHNICAL
DESCRIPTION
18

Control system (S type) - Field Programmable using
easy to set dipswitches and controlled via Infra-red
handset and/or wired wall pad. It oers the following
control options: continuous with modulation or On/O
fan, 2 or 4 Pipe configuration, with or without valves,
with or without electrical heater, preheat configuration,
complete diagnostics.
Our S type controller also allows control of up to 32
Secondary units via a single Main Unit with IR Handset
or Wall Pad controller, and up to 2048 units via BMS
(Building Management System) with Modbus platform.
Figure 1: Accessories
Mixing and
recirculating
chamber
Filter
module
Coil
Electrical
heating
module
Accessories - Optional accessories
can be selected: G4 (Merv 8) filter
module, mixing and recirculating
chamber, and electrical heating
module.
Item Description
1Double Wall Case
2 Filter
3 Controller
4 Drain Pan
5 EC Fan
Figure 2: Exploded diagram
1
2
3
4
5
Table 17: Exploded diagram components
19

DEFINITIONS
CAUTION: Risk of minor/moderate injury if precaution
not taken.
WARNING: Risk of death/serious injury if warning
isn’t heeded.
DANGER: Risk of death/serious injury if danger
isn’t avoided.
SAFETY SYMBOLS USED
CAUTION: Important information, read the
provided instructions carefully
WARNING: Potential electric shock hazard
WARNING: High voltage
WARNING: Cut/Crush hazard
Protective earth connection
Action prohibited
MINI AIR HANDLER SAFETY GUIDE
Please read the information in this document carefully
prior to attempting the installation, operation and/
or servicing of the SHAU. This document contains all
information required to install and operate the SHAU.
Failure to follow the directions provided herein may
impair the safeties provided and could cause damage
to the SHAU equipment and/or accessory equipment,
damage to building facilities and/or cause serious injury
or death to the operator. Please adhere to all applicable
safety guideline requirements in this document and all
applicable electrical and mechanical jurisdictional codes.
Prior to providing power to the equipment, inspect the
area for water spills, which may present a shock hazard
to the user. Take extra care to mount accessory electrical
equipment away from areas regularly exposed to water
and provide secure wire and cable routing to protect
personnel from shock hazards.
Only operate the equipment with an appropriately sized
breaker in place and wire sizes with adequate current
carrying capacity. Consult with an electrician before
attempting electrical installation.
Using SHAU's in a manner not described in this manual
may void its warranty and any safeties provided herein.
WARNINGS
20