The heater is equipped for connection to an external 2-wire remote thermostat or a 3-wire remote switch.
A 2-wire thermostat has its own temperature sensor for regulating water temperature.
A 3-wire remote switch allows the “Pool” or “Spa” modes to be remotely selected.
Connect remote wiring to the terminal block on the Control Module.
For a 2-wire remote thermostat, connect one wire to the Pool terminal and the second wire to the 24 VAC terminal.
For a 3-wire remote, connect Pool/Low to the Pool terminal, Spa/High to the Spa terminal, and Common to the 24 VAC terminal.
Remote wiring should be run in a separate conduit. For runs less than 30 feet, use 22 AWG wire.
For runs over 30 feet, use 20 AWG wire.
Runs should not exceed 200 feet.
To configure the heater for 2-wire remote thermostat control, use the “Mode” key of the keypad to put the control in the “Standby” mode.
Then press and hold the “Down” and “Mode” keys for 3 seconds until the indication “bo” is shown on the display.
To operate the heater by remote thermostat, the heater’s control must be in either “Pool” or “Spa mode.
The heater’s display will show “bo”. The “Pool” or “Spa” LED will be illuminated.
The heater will fire when instructed by the remote thermostat.
The heater’s thermostat will function to limit the water temperature to a maximum of 104°F.
To operate the heater with a remote 3-wire switch, the heater’s control must be in the “Standby” mode.
The Standby LED will be illuminated.
When the remote switch is set to “Pool/Low”, the Pool LED will be energized and display will show the water temperature.
When the remote switch is set to “Spa/High”, the Spa LED will be energized and the display will show the water temperature.
The heater will use its internal thermostat to regulate the water temperature to the set point of the mode selected.
Bypass Operation
Note the following information when setting up the IDL2 for Bypass Operation (control via a remote thermostat).
1. Use the keypad to set the IDL2 for Bypass Operation as outlined in the Owner/Operator Manual.
No dipswitches are used on this model.
2. When shipped from the factory the mode will be set to “STANDBY” and the thermostat settings for “SPA” and “POOL” will be set at 65° F.
3. During a pre-install prior to pool/pump startup it may be desired to set Bypass Operation before sufficient water pressure is available.
In most situations this is now possible with IDL2 heaters that use Version 13 operating software.
After powering up the heater the fault code “LO” will illuminate on the display panel.
This will be a “soft” lockout resulting from the open contacts on the water pressure switch; the control will accept inputs via the keypad.
Follow the process described in the Owner/Operator manual to set Bypass Operation.
Bypass Operation cannot be set while any other fault code is displayed until that code is cleared.
After setting Bypass Operation (the display will read “bo”) set the heater to “SPA” or “POOL” as needed.
4. The display will continue to show “bo” for 10 seconds, then “LO” will be displayed again.
a. If the remote thermostat does not generate a call for heat the “LO” error will continue to be a “soft” lockout.
The control will accept keypad inputs to change the mode and it will remain in the selected mode when the error code is cleared.
The heater will not operate until the error code is cleared.
b. If the remote thermostat generates a call for heat the “LO” error will be a “hard” lockout.
The control will accept keypad inputs to change the mode and it will remain in the selected mode when the error code is cleared or the call for heat is removed.
It will not be possible to switch out of Bypass Operation until the error code is cleared
