Generic Heaters
1. Wire heater to 120/240V power source per the instructions in the heater manual. The ECOMMAND
4 does NOT control the power going to the heater.
2. Wire the ECOMMAND 4 dry contact heater output per the diagram below. Many internal parts of the
heater can get very hot--see the heater manufacturer’s recommendations on the minimum temperature
rating for wires. If no guidance is given, use 105°C rated wire.
3. Set any ON/OFF switch on the heater to ON.
4. Set the thermostat(s) on the heater to the maximum (hottest) setting.
Laars Heaters
1. Turn power off to heater.
2. Remove factory jumper from terminal block.
3. Wire ECOMMAND 4 to the heater as shown.
4. Ensure toggle switch is in the ON position.
5. Set heater thermostats to maximum position.
9
Ignition/Valve
Heater
Kill Switch
Thermostat
Air
Solar
Pool/Spa
Heater
ir
Solar
Pool/Spa
Heater
to limit switches
remove jumper
Fusible Link
Heater Extend
If “Enabled”, the filter extend logic keeps the filter pump running beyond the normal turn-off
time until the pool (or spa) is heated up to the desired temperature setting (see Settings
Menu). Heater extend will NOT cause the filter pump to turn on, it will only delay the turn
off time when the heater is operating.
Allow Low Speed
This menu only appears if the filter is configured for 2-speed or variable speed operation.
During default operation, high speed mode is used whenever the heater is on. If Allow Low
Speed is enabled, low speed will be allowed even if the heater is on.
Solar Config.
+ to view/change
Solar
Disabled
Solar-Extend
Disabled
Solar Priority
Disabled
Push to access solar options
Toggle between Enabled and Disabled (default) Solar
Toggle between Enabled and Disabled (default) Solar Extend
Toggle between Enabled and Disabled (default) Solar Priority
Move to previous/next configuration menu
Move to next menu item or previous/next configuration menu
Move to next menu item
Move to next menu item
if “Solar” is enabled
if “Solar” is enabled
Allow Low Speed
Disabled
Toggle between Enabled and Disabled (default)
next menu item or previous/next configuration menu
if “Solar” is enabled and
“1-speed Filter” is not selected
Solar
If the solar control logic is “Enabled”, several additional steps must be taken to ensure
proper operation of the solar system. If the solar is operated by a valve, then the Valve3
output must be setup for solar logic (page 22). If the solar is operated by a pump, then one
of the AUX relays must be set up for solar logic (page 20). Also, the “solar” temperature
sensor must be installed. This sensor is typically mounted near the collector array and is
used to sense whether sufficient solar heat is available.
If solar is “Enabled”, the valve or solar pump relay will turn on when the water temperature is
less than the desired temperature setting AND the solar sensor is hotter than the water. The
desired temperature is in the “Settings Menu”. If applicable, the homeowner will be prompted
to enter separate pool and spa desired temperature settings. Depending on the position of
the pool/spa suction valve, the proper temperature setting will be used.
Solar Extend
If “Enabled”, the filter extend logic keeps the filter pump running beyond the normal turn-off
time if solar heat is still available. When solar heat is no longer available, both the solar
valve/pump and filter pump will turn off simultaneously. Solar extend will NOT cause the
filter pump to turn on, it will only delay the turn off time when solar is operating.
Solar Priority
If both “Solar Control” and “Heater Control” are enabled, the Solar Priority feature will keep
the conventional heater off whenever solar heat is available. This provides the most cost
effective way of heating the pool. When solar heat is not available, the conventional heater
will operate normally.
18
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