SPACESAVER SSETU-18K Point Of Use Electric Tankless Owner’s Manual
- September 16, 2024
- SPACESAVER
Table of Contents
SSETU-18K Point Of Use Electric Tankless
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Product Specifications
Model Number| Voltage (V)| Number of Elements| Total Input Wattage (kW)|
Wattage per Element| Total Current Draw (Amps)| Recommended Canada Circuit
Breaker Size (Amps)| Conductor Size (AWG)| Activation GPM
---|---|---|---|---|---|---|---|---
SSETU-18K| 120| 2| 1.75| 0.88| 14.58| 20| 14| 0.17
Product Usage Instructions
Installation
Ensure the minimum clearances are maintained during
installation:
- Front Clearance: 15+ inches (38.1+ cm)
- Side View: 12 inches (30.5 cm)
Orientation & Clearance
Properly orient the unit with hot and cold water connections as
indicated:
Frequently Asked Questions (FAQ)
Q: What is the warranty on the product?
A: The product comes with a standard warranty. For detailed
warranty information, please refer to the warranty documentation
provided.
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POINT-OF-USE ELECTRIC TANKLESS
COMMERCIAL/RESIDENTIAL
EASY INSTALLATION
· Compact size perfect for point-of-use applications close to fixtures
· Mounts easily to the wall · No venting required · ½” NPT water connection ·
No T&P valve required (check local
codes)
WIDE ARRAY OF MODELS AND MODES OF OPERATION
· 1.75kW 3.5kW, 120V · 3.5kW 11kW, 240V (208V) · Single Phase, 50/60 Hz ·
Two mode options, easy switching · Lavatory mode, default 105°F; temp
range 80°F 149°F · Emergency eye wash mode, 85°F
ONBOARD SELF-DIAGNOSTICS & TROUBLESHOOTING
· Onboard self-diagnostics to monitor performance and protect the unit
· Bright LED display for status updates and making system selections and
adjustments
· Error codes for troubleshooting and faster resolution
HIGHLY EFFICIENT & RELIABLE THERMOSTATIC DESIGN
· On-demand water heater capable of supplying endless hot water when
appropriately sized
· Ultra-low activation of 0.17 GPM min.
· Energy efficiency 0.91 UEF or higher
· Dry-fire protection to prevent premature element failures
· Secondary temperature regulation to limit hot water output appropriate for
use with hand or eye washing applications
· Scale detection (Patent Pending) and easy maintenance for extended service
life of the heater
CONSTRUCTION
· Housing Bayblend® FR3010 plastic, dark gray
· Chamber Material Entec Nylon, glass-filled
· Sheathed copper elements for longer life
WARRANTY
· 6-Year limited warranty on chambers
· 1-Year limited warranty on all parts
· For complete information, consult the written warranty
Page 1 of 4 1-888-599-2837 Toll-free Canada | A. O. Smith Enterprises Ltd. | 599 Hill Street West | Fergus, ON N1M 2X1 ©2024 A. O. Smith Enterprises Ltd.
SET506N (07-24)
POINT-OF-USE ELECTRIC TANKLESS
COMMERCIAL/RESIDENTIAL
PRODUCT SPECIFICATIONS
Model Number
Voltage (V)
Number of Elements
Total Input Wattage (kW)
Wattage per Element
Total Current Draw (Amps)
Recommended Canada Circuit Breaker Size (Amps)
Conductor Size (AWG)
Activation GPM
SSETU-18K
120
2
1.75
0.88
14.58
20
14
0.17
SSETU-24K
120
2
2.40
1.20
20.00
25
12
0.17
SSETU-30K
120
2
3.00
1.50
25.00
35
10
0.17
SSETU-35K
120
2
3.50
1.75
29.17
40
10
0.17
SSETU-35E
240+
2
3.50
1.75
14.58
20
14
0.17
SSETU-45E
240+
2
4.50
2.25
18.75
25
12
0.17
SSETU-55E
240+
2
5.50
2.75
22.92
30
10
0.17
SSETU-70E
240+
4
7.00
1.75
29.17
40
10
0.17
SSETU-90E
240+
4
9.00
2.25
37.50
50
8
0.17
SSETU-110E
240+
4
11.00
2.75
45.83
60
8
0.17
Copper conductors only. All wiring/conductors must be rated for 90°C or greater. + This model may be connected to a 208 VAC supply with reduced power output. Connection to 208 VAC may require different breaker and/or wire size than shown in the table. NOTICE: Incoming line voltage variations may result in nuisance breaker trips. Contact Technical Support if there are multiple breaker trips when the recommended breaker size is in use.
GPM AT TEMPERATURE RISE
Volts
kW
25°F 30°F 35°F 40°F 45°F 50°F 55°F 60°F 65°F 70°F 75°F 80°F 85°F
1.75kW 0.47 0.39 0.33 0.29 0.26 0.23 0.21 0.20 0.18 0.17
–
–
–
2.4kW
0.64 0.54 0.46 0.40 0.36 0.32 0.29 0.27 0.25 0.23 0.21 0.20 0.19
120V
3kW
0.80 0.67 0.57 0.50 0.45 0.40 0.36 0.33 0.31 0.29 0.27 0.25 0.24
3.5kW
0.94 0.78 0.67 0.59 0.52 0.47 0.43 0.39 0.36 0.33 0.31 0.29 0.28
3.5kW
0.94 0.78 0.67 0.59 0.52 0.47 0.43 0.39 0.36 0.33 0.31 0.29 0.28
4.5kW
1.20 1.00 0.86 0.75 0.67 0.60 0.55 0.50 0.46 0.43 0.40 0.38 0.35
240V (208V)
5.5kW
1.47 1.23 1.05 0.92 0.82 0.74 0.67 0.61 0.57 0.53 0.49 0.46 0.43
7kW
1.87 1.56 1.34 1.17 1.04 0.94 0.85 0.78 0.72 0.67 0.62 0.59 0.55
9kW
2.41 2.01 1.72 1.50 1.34 1.20 1.09 1.00 0.93 0.86 0.80 0.75 0.71
11kW
2.94 2.45 2.10 1.84 1.63 1.47 1.34 1.23 1.13 1.05 0.98 0.92 0.87
Cold water inlet temperatures raised to 105°F setpoint.
Page 2 of 4 1-888-599-2837 Toll-free Canada | A. O. Smith Enterprises Ltd. | 599 Hill Street West | Fergus, ON N1M 2X1 ©2024 A. O. Smith Enterprises Ltd.
SET506N (07-24)
POINT-OF-USE ELECTRIC TANKLESS
COMMERCIAL/RESIDENTIAL
DIMENSIONS Front View
1.03″ (2.62 cm)
Side View
5.11″ (12.98 cm)
2.29″ (5.82 cm)
°F °C
ENTER
12.22″ (31.04 cm)
11.25″ (28.58 cm)
12.22″ (31.04 cm)
7.65″ (19.43 cm)
Top View
2.20″ (5.59 cm)
4.77″ (12.12 cm)
1.24″ (3.15 cm)
5.11″ (12.98 cm)
2.29″ (5.82 cm)
2.45″ (6.22 cm)
7.65″ (19.43 cm)
DIMENSIONS SHIPPING Models 1.75kW – 5.5kW 7.0kW – 11kW
Width
in (cm)
11.25 (28)
11.25 (28)
Height
in (cm)
15.5 (38)
15.5 (38)
Page 3 of 4 1-888-599-2837 Toll-free Canada | A. O. Smith Enterprises Ltd. | 599 Hill Street West | Fergus, ON N1M 2X1 ©2024 A. O. Smith Enterprises Ltd.
2.29″ (5.82 cm)
2.45″ (6.22 cm)
Depth
in (cm)
8 (20)
8 (20)
Weight
lb (kg)
6.0 (2.7) 8.0 (3.6)
SET506N (07-24)
POINT-OF-USE ELECTRIC TANKLESS
COMMERCIAL/RESIDENTIAL
INSTALLATION
Wall
Side View
12″ (30.5 cm)
MINIMUM CLEARANCES Front View
Wall or adjacent object
Front Clearance: 15″ + (38.1 cm +)
8″ (20.3 cm)
12″+ (30.5 cm +) Drain Pan
Drain Pan Floor
°F °C
8″
ENTER
(20.3 cm)
12″+ (30.5 cm +)
ORIENTATION & CLEARANCE
· All models must be oriented with the inlet and outlet facing updward. · Top
clearance a minimum of 12 inches (30.5 cm) to provide access
for plumbing connections. · Side clearance a minimum of 8 inches (20.3 cm)
to remove the screws
and protective cover and to provide access for electrical wires to enter
through the side of the unit. · Bottom clearance a minimum of 12 inches
(30.5 cm) for access to and maintenance of heating elements. Do not store any
items beneath the water heater. · Front clearance a minimum of 8 inches
(20.3 cm). In the absence of a door or removable access panel in front of the
heater, allow a minimum of 15 inches (38.1 cm) for cover removal and ease of
service.
Hot
Cold
°F °C
ENTER
For Technical Information call 1-888-599-2837. A. O. Smith Enterprises Ltd. reserves the right to make product changes or improvements without prior notice.
Page 4 of 4 1-888-599-2837 Toll-free Canada | A. O. Smith Enterprises Ltd. | 599 Hill Street West | Fergus, ON N1M 2X1 ©2024 A. O. Smith Enterprises Ltd.
SET506N (07-24)