TANKLESS ELECTRIC WATER HEATERS

Quick GuideSH Models for Radiant Floor HeatingCompliance & Listings: ANSI/UL 834, CSA, NSF, HUD, NEC

SEISCOSpaceHeater

RADIANT MANIFOLD

BKR

BKR

CIRCULATINGPUMP

ROOMTHERMOSTAT

EXPANSION TANK

SHUT OFF VALVES

CheckValve

AirSeparator(Bleeder)

240 V Power

120 V Power

Double-Pole Breakers

In-FloorTubing

ReturnWater

Hot Water

Return Water

*Warranted for Space Heating

Applications only. Not to be used for

WaterHeating.

This new micro-boiler is the ideal replacement

for traditional boilers and tank-type heaters and is the enabling technology for use

with active renewable energy systems such as solar and

geothermal systems.

Features

• ANSI/UL 834 Approval Listing for Space Heating Systems• Works with tubing and manifold systems• No minimum � ow activation required• Built-in DSM Utility Integration option• Compatible with Home Energy Management Systems• Heats � uid mixtures including ethylene glycol (antifreeze)• No moving parts• Very small & compact• Light weight modular construction• No restriction to � ow

• Standard 3/4 inch plumbing connections• Microprocessor digital control• Power sharing & variable power control technology• Continuous venting• Heats continuously only when needed, no storage• Self-diagnostics• Redundant safety devices• High performance polymer nylon chamber material• Built-in Leak detector and alarm• Rust & corrosion resistant

SEISCO FLOW RATES, TEMPERATURE RISE & HEAT RATINGSSeiscoModel

Heat OutputRating(BTU)

Max. GPM forTemp. Rise of

10°F

Max. GPM forTemp. Rise of

20°F

Max. GPM forTemp. Rise of

48°F

Max. GPM forTemp. Rise of

64°F

Max. GPM forTemp. Rise of

76°FSH-09 30,710 6.1 3.1 1.3 1.0 0.8SH-11 37,540 7.5 3.8 1.6 1.2 1.0SH-14 47,780 9.6 4.8 2.0 1.5 1.3SH-18 61,430 12.3 6.1 2.6 2.0 1.6SH-22 75,080 15.0 7.5 3.1 2.3 2.0SH-28 95,560 19.1 9.6 4.0 3.0 2.5

GPM = Gallons per minute (Flow Rate) SPACE HEATING & Active Renewable Energy Back-up SYSTEM Requirements

HEATING SYSTEM SuggestedSeisco Model(s)

Seisco Temp Setting

Radiant Floor All Models* 100-120 FHydro-Heat SH-28+ 125-135 F

Baseboard Heat SH-28* 130-140 FDual Heating SH-28+ 120 F

Solar Backup Heat SH-28, 22 120-135 FGeothermal Backup SH-28, 22 120-135 F

* The “Heat Loss Rate” (BTU/Hr.) should be calculated by a qualified heating contractor. Select a Seisco ModelBTU Rating using 125% of the calculated Heat Loss Rate for the area that is being heated.SEISCO MODEL SPECIFICATIONS

SeiscoModel

Weight(LBS)

Height(INCHES)

Width(INCHES)

Depth(INCHES)

PlumbingFittings

(INCHES)

HeatingElements

(WATTS X NO.)Energy Factor

SH-09 15 15 ¾ 10 ¼ 6 ¼ ¾ 4500 X 2 0.99+

SH-11 15 15 ¾ 10 ¼ 6 ¼ ¾ 5500 X 2 0.99+

SH-14 15 15 ¾ 10 ¼ 6 ¼ ¾ 7000 X 2 0.99+

SH-18 23 15 ¾ 15 ¾ 6 ¼ ¾ 4500 X 4 0.99+

SH-22 23 15 ¾ 15 ¾ 6 ¼ ¾ 5500 X 4 0.99+

SH-28 23 15 ¾ 15 ¾ 6 ¼ ¾ 7000 X 4 0.99+

SEISCO ELECTRICAL RATINGSSeiscoModel

MaximumPower Rating

(kW)

VoltageRating(VAC)

MaximumCurrent Rating

(AMPS)

Number ofCircuits Required

(Two Wire)

Number of Circuit Breakers Required

(Double Pole)

CircuitBreaker Size

(AMPS)SH-09 9 240 37.5 1 1 50SH-11 11 240 46 1 1 60SH-14 14 240 58 2* 2* 40SH-18 18 240 75 2 2 50SH-22 22 240 91 2 2 60SH-28 28 240 116 4** 4** 40

* Optional one (1), 75 AMP circuit supply – Check with manufacturer for jumpers that must be installed on control board for this option.

Typical Heat Loss Rates for New Homes

Sq. Ft. BTU Loss Seisco Selection3,000+ 80,000 to 125,000 (Use 2 SH-18’s or 2 SH-22s)**2,500+ 50,000 to 80,000 (Use 1 SH-28 or 1 SH-22)1,500+ 35,000 to 50,000 (Use 1 SH-18 or 1 SH-22) 800+ 20,000 to 35,000 (Use 1 SH-14 or 1 SH-18)** Plumbed in Parallel

Models

SH-28SH-22SH-18

Models

SH-14SH-11SH-09