SPACESAVER SSETU-18K Point Of Use Electric Tankless Owner's Manual

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

PRODUCT SPECIFICATIONS

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. Cold water inlet temperatures raised to 105°F setpoint.

Volts	kW	25°F	30°F	35°F	40°F	45°F	GPM AT TEMPERATURE RISE 50°F 55°F 60°F			65°F	70°F	75°F	80°F	85°F
120V	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
	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
240V (208V)	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

DIMENSIONS

Volts	kW	25°F	30°F	35°F	40°F	45°F	GPM AT TEMPERATURE RISE 50°F 55°F 60°F			65°F	70°F	75°F	80°F	85°F
120V	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
	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
240V (208V)	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

INSTALLATION

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.

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.

1-888-599-2837 Toll-free Canada
| A. O. Smith Enterprises Ltd. | 599 Hill Street West
Fergus, ON N1M 2X1

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.

Documents / Resources

SPACESAVER SSETU-18K Point Of Use Electric Tankless [pdf] Owner's Manual
SSETU-18K, SSETU-24K, SSETU-30K, SSETU-35K, SSETU-35E, SSETU-45E, SSETU-55E, SSETU-70E, SSETU-90E, SSETU-110E, SSETU-18K Point Of Use Electric Tankless, SSETU-18K, Point Of Use Electric Tankless, Electric Tankless, Tankless

References

User Manual

SPACE SAVER SSETU-18K Point Of Use Electric Tankless

Product Specifications

Product Usage Instructions

EASY INSTALLATION

WIDE ARRAY OF MODELS AND MODES OF OPERATION

ONBOARD SELF-DIAGNOSTICS & TROUBLESHOOTING