Atmor AT90008, AT90013, AT90010, AT90004, AT90006 User Manual

...

Hot Water on Demand

Installation and Operation Guide

900 Series InLine

3kW-13kW

www.atmor.net

Safety Instructions

OVERVIEW

This manual must be read carefully before attempting to install the water heater. If you do not follow the safety rules or the instructions outlined in this manual, the unit may not operate properly and it could cause property damage, serious bodily injury or death.

Atmor will not be liable for any damages because of failure to comply with the installation and operating instructions outlined in this manual or because of improper use. Improper use includes the use of this appliance

to heat any liquid other than water. Failure to comply with the installation and operating instructions or

improper use voids the warranty. Never remove the unit’s cover unless the electricity is turned off.

The water heater must be installed by a licensed electrician and in compliance with all local electrical and building regulations.

The heater must be installed according to the installation

instructions (see gures).

The plumbing installation requires metal or reinforced pipes that can withstand a minimum pressure of 8 bar. (Other types of pipes will

cause damage.)

Caution: The appliance must be grounded.

The plumbing installation must be completed before the electrical installation.

Do not install the heater where it may be subjected to direct sunlight, rain and/ or a constant spray of water.

A dedicated circuit breaker must be installed on the power distribution panel.

The heater operates at a

minimum water ow rate of

0.5 gallon/minute.

Always contact your local authorized licensed proffessional for service.

Technical Information

Model *Wattage Voltage Amperage Phase

AT900-03 3 kW 110 27 1 30 10 AWG

AT900-04 3.8 kW 240 16 1 20 12 AWG

AT900-06 6.5 kW 240 27 1 30 10 AWG

AT900-08 8.5 kW 240 36 1 40 6 AWG

AT900-10 10.5 kW 240 44 1 50 6 AWG

AT900-13 13 kW 240 55 1 60 4 AWG

Minimum water ow to activate unit: 0.5 GPM Nominal water volume: 2.7G/Min Working pressure: 0.5 -8 bar (7 -115 psi) Tested pressure: 16 bar (230 psi) Water connections: 1/2" NPT Dimensions (in) (H x W x D): 7.3 x 11.8 x 3.55 Weight (Ib): 3.4

* Wattage based on maximum voltage.

Circuit breaker

size

Model Guide - kW Output

Model 240V 208V 110V 120V

AT900-04 3.8 kW 2.8 kW - -

Required wire

size

AT900-06 6.5 kW 4.9 kW - -

AT900-08 8.5 kW 6.4 kW - -

AT900-10 10.5 kW 7.9 kW - -

AT900-13 13.0 kW 9.8 kW - -

AT900-03 - - 3.0 kW 3.5 kW

Assembly Instructions

Connect the Pressure Relief

Device (PRD) to the unit (Fig1)

Note: IMPORTANT – do not discard this step. A PRD must be installed.

Mount unit to wall with 4 screws at the

marked points (Figure 4)

The appliance must be mounted horizontally, with water inlets and outlets

at the bottom (Figure 5)

Connect the water inlet hose to the entry point of the heater (left side

inlet), and connect the outlet hose to the water outlet. Use a hose that can withstand a minimum pressure of 4 bars. Using any other type of hose will cause damage (Figure 5).

Residential plumbing systems with unstable pressure or pressure above 5 bar require the application of a pressure stabilizer valve, set to 4 – 5 bars.

Do not install the appliance with water inlets and outlets at the

top (Figure 6)

Remove the appliance

covers (Figure 2).

1. Mount ground plate to wall.

2. Pull wires through.

3. Cut out hole in back of unit (Right/Left

back) and pass wires

through

(Figure 3)

Rubber

PRD

Cold Hot

3 4

*3a) 3kW

L1 L2 N

*3b)

3.5-8.5kW

L1GGN

G = Green or Yellow N = White L1/L2 = Black

L1G

GNL1

*3c)

8.6-13kW

Note: Neutral (N) does not need to be connected.

(L2)

Run the water ow for

one minute to check for leakage before connecting to power.

Connect the power cable to the terminal block. Caution: The heater must be grounded.

Reference gure *3 on page 4 and

Electrical diagram on page 6

1009

Reattach the front cover of the heater and secure it with 4 screws and then slide the bottom gray cover

Do not install the heater where it may be subject to direct sunlight.

Aerator provided with 3kW models only

Assembly instructions

Make sure that the

appliance is lled with

water before connecting

power. (Repeat step 7)

For optimal heating performance and proper operation, the provided 0.5GPM aerator must be installed to your sink faucet. This will ensure

a continuous ow and consistent, maximum

temperature rise. Output temperature will vary depending on seasonality and inlet cold water temperatures

When installed outdoors, the heater must be placed in sealed waterproof electrical box.

It is recommended that the appliance electrical connections be tested once

a year by a qualied technician.

Maximum of 0.5 GPM ow rate is needed for optimal heating performance

Electrical Diagram

1. 3-3.4kW (110V) - Install Line 1 (L1), E(G)-Ground, N (Neutral)

2. 3.5-8.5kW (240V) - Install Line 1 (L1), E(G)-Ground, Line 2 (L2)

E(G)

L2(*N)

8.6kW-10.5kW (240V)

L N

E(G)

L2(*N)

E(G)

10.6kW-13kW (240V)

411 53 6

1. Terminal block

2. Thermal cut-out with reset

3. Thermal cut-out

4. Relay

5. Light

6. Switch 0- Off

(Option) 1- Low

7. Heating element

8. Read sensor

1. Terminal block

2. Thermal cut-out with reset

3. Thermal Cut out

4. Relay

5. Switch 0- Off 1- Low 2- Medium 3- High

6. Heating element

7. Read sensor

8. EARTH(G) Connection in

the heating canister

E (G)

L2(*N)

E(G)

2 7

5 64

L1/L2 = Line1/Line2 (Black or Red) E(G) = Ground (Green/Yellow)

*N = Neutral (White or Silver)

*Neutral acts as Line 2 (L2) for 220V/240V *Neutral does not have to be connected for 3.5kW-13kW

1. Terminal block

2. Thermostat with reset

3. Thermostat

4. Switches with lights

5. Relay

6. Heating elements

7. Read sensor

8. EARTH(G) Connection in

the heating canister

Operation Guide

Low Medium High

MODEL kW kW kW

AT900-03 1 2 3

AT900-04 1.6 2.2 3.8

AT900-06 3 3.5 6.5

AT900-08 3.8 4.7 8.5

AT900-10 5.25 5.25 10.5

AT900-13 4.5 8.5 13

Troubleshooting

PROBLEM ISSUE POSSIBLE CAUSE SOLUTION

Water not hot enough.

Too much water owing

through the heater.

Reduction in the ambient temperature.

Water Pressure below of

0.5 bar (7 psi).

Electrical Malfunction.

Reduce the ow rate of the water via

the outlet tap.

Switch to higher temperature setting.

Check if the main water line stop valve is fully open and that there are no other restrictions in the water supply line.

Have the Heater unit check by a

qualied eIectrician or contact your

local authorized distributor.

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