Atmor AT90008, AT90013, AT90010, AT90004, AT90006 User Manual
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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.
01 02 03
The water heater must be installed by a licensed
electrician and in compliance with all local electrical and
building regulations.
04
The heater must be installed according to the installation instructions (see figures).
Caution: The appliance must be grounded.
05
The plumbing installation must be completed before the electrical installation.
A dedicated circuit breaker must be installed on the power distribution panel.
06
The heater operates at a minimum water flow rate of
0.5 gallon/minute.
07 08 09
The plumbing installation requires metal or reinforced pipes that can withstand a minimum pressure of 8 bar. (Other types of pipes will cause damage.)
Do not install the heater where it may be subjected to direct sunlight, rain and/ or a constant spray of water.
Always contact your local authorized licensed proffessional for service.
1
Technical Information
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Circuit breaker |
Required wire |
Model |
*Wattage |
Voltage |
Amperage |
Phase |
size |
size |
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AT900-03 |
3 kW |
110 |
27 |
1 |
30 |
10 AWG |
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AT900-04 |
3.8 kW |
240 |
16 |
1 |
20 |
12 AWG |
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AT900-06 |
6.5 kW |
240 |
27 |
1 |
30 |
10 AWG |
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AT900-08 |
8.5 kW |
240 |
36 |
1 |
40 |
6 AWG |
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AT900-10 |
10.5 kW |
240 |
44 |
1 |
50 |
6 AWG |
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AT900-13 |
13 kW |
240 |
55 |
1 |
60 |
4 AWG |
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Minimum water flow 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.
Model Guide - kW Output
Model |
240V |
208V |
110V |
120V |
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AT900-04 |
3.8 kW |
2.8 kW |
- |
- |
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AT900-06 |
6.5 kW |
4.9 kW |
- |
- |
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AT900-08 |
8.5 kW |
6.4 kW |
- |
- |
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AT900-10 |
10.5 kW |
7.9 kW |
- |
- |
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AT900-13 |
13.0 kW |
9.8 kW |
- |
- |
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AT900-03 |
- |
- |
3.0 kW |
3.5 kW |
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2
Assembly Instructions
01 02 03
Connect the Pressure Relief |
Remove the appliance |
Device (PRD) to the unit (Fig1) |
covers (Figure 2). |
Note: IMPORTANT – do not |
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discard this step. APRD |
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must be installed. |
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04 Mount unit to wall with 4 screws at the marked points (Figure 4)
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)
05
06Do not install the appliance with water inlets and outlets at the top (Figure 6)
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Rubber |
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PRD |
Cold |
Hot |
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4 |
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3 |
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G = Green or Yellow |
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N ** |
N = White |
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L1 L2 |
L1/L2 = Black |
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5 |
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*3a) |
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*3b) |
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*3c) |
Note: Neutral (N) |
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3kW |
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3.5-8.5kW |
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8.6-13kW |
does not need to |
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be connected. |
4 |
N |
G |
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L1 |
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L2 |
G |
L1 |
N |
L1 |
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N |
G |
L1 |
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N |
G |
L1 |
L1 |
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(L2) |
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07
Run the water flow for one minute to check for leakage before connecting
to power.
09
Reattach the front cover of the heater and secure it with 4 screws and then
slide the bottom gray cover
12
Do not install the heater where it may be subject to direct sunlight.
08Connect the power cable to the terminal block.
Caution: The heater must be grounded.
Reference figure *3 on page 4 and
Electrical diagram on page 6
10 11
Make sure that the appliance is filled with water before connecting
power. (Repeat step 7)
13
When installed outdoors, the heater must be placed in sealed waterproof electrical box.
14 Aerator provided with 3kW models only
Assembly instructions
For optimal heating performance and proper operation, the provided 0.5GPM aerator must be installed to your sink faucet. This will ensure a continuous flow and consistent, maximum temperature rise. Output temperature will vary depending on seasonality and inlet cold water temperatures
Maximum of 0.5 GPM flow rate is needed for optimal heating performance
5
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)
1 |
1 |
1. |
Terminal block |
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2. |
Thermal cut-out with reset |
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3. |
Thermal cut-out |
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L |
L1 |
4. Relay |
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E(G) |
E(G) |
5. |
Light |
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6. |
Switch 0- Off |
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N |
L2(*N) |
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(Option) 1- Low |
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7. |
Heating element |
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8. |
Read sensor |
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8.6kW-10.5kW (240V)
1 |
1 |
3 |
4 |
5 |
6 |
1. |
Terminal block |
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2. |
Thermal cut-out with reset |
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3. |
Thermal Cut out |
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4. |
Relay |
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L |
L1 |
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5. |
Switch 0- Off |
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1- Low |
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N |
L2(*N) |
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2- Medium |
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3- High |
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E(G) |
E(G) |
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6. Heating element |
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8 |
7 |
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7. |
Read sensor |
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8. |
EARTH(G) Connection in |
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the heating canister
10.6kW-13kW (240V)
3
L |
L1 |
N |
L2(*N) |
E (G)
E(G)
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
1 |
1 |
8 |
2 |
7 |
4 |
5 |
6 |
L1/L2 = Line1/Line2 (Black or Red)
E(G) = Ground (Green/Yellow) 6
*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
Operation Guide
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Low |
Medium |
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High |
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MODEL |
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kW |
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kW |
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kW |
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AT900-03 |
1 |
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2 |
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3 |
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AT900-04 |
1.6 |
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2.2 |
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3.8 |
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AT900-06 |
3 |
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3.5 |
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6.5 |
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AT900-08 |
3.8 |
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4.7 |
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8.5 |
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AT900-10 |
5.25 |
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5.25 |
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10.5 |
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AT900-13 |
4.5 |
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8.5 |
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13 |
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Troubleshooting
PROBLEM ISSUE |
POSSIBLE CAUSE |
SOLUTION |
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Water not hot |
Too much water flowing |
Reduce the flow rate of the water via |
enough. |
through the heater. |
the outlet tap. |
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Reduction in the ambient |
Switch to higher temperature setting. |
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temperature. |
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Water Pressure below of |
Check if the main water line stop |
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0.5 bar (7 psi). |
valve is fully open and that there |
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are no other restrictions in the water |
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supply line. |
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Electrical Malfunction. |
Have the Heater unit check by a |
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qualified eIectrician or contact your |
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local authorized distributor. |
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7
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