MODEL FIII-SERIES CONTROL INSTALLATION ... - Agencespl.com

REV 1.1
FIII SERIES CONTROL
Situation: You get the error message – WATER FLOW SWITCH or WAITING FOR FLOW.
1. If the control does not sense a closed circuit at input connection, WTR FLW. Check to make sure the circuit for the
circulator pump is correct, that the pump is being energized, and that the flow prove switch is working properly.
2. If there is no flow prove switch, check to make sure that a jumper wire has been hooked up to J11B, WTR FLW
interlock.
Situation: H-Net boilers are detected but then lost and then detected again etc...
1. The H-Net communications cable may be receiving interference from the blower, ignition, or other form of radiated
electrical noise. Termination of the jumpers may not be correct or there is more than one master.
A. Ensure that the termination jumpers are set on the MASTER boiler and only the LAST MEMBER boiler.
All of the other member boilers should have their termination jumpers in the non-terminated position.
B. There may be (2) or more MASTER boilers. Ensure that only one header sensor is present and connected to
the SYS/DHW input. There should be no wires or sensors connected to the SYS/DHW input if the boiler is
operating as a member. This input is auto detected and defines the boiler as a MASTER.
C. Ensure the cable to connect the H-Net is of a shielded or twisted pair type. Shielding of the cable is
required.
D. Minimize the electrical interference by routing the communications cable away from electrical noise
sources, such as: Motors, ignition controls, contactors etc…
Situation: Only the MASTER boiler Fires, but the system has many boilers and is using H-Net.
1. In order for the MASTER boiler to act as a MASTER, the header sensor must be set to TYPEZ or TE6000, and there
must be a header sensor present. At power-up, the header sensor is auto detected. If the temperature of the header
sensor at power-up is greater than –25 F and less than 240 F it is considered a valid sensor. The boiler will default to
the MEMBER mode if the temperature is not in this range and can only be run locally or by external inputs.
2. If the LOAD FACTORY DEFAULTS has been used to restore all the default settings, the header sensor
has been set to NONE. This needs to be set as stated in 1, and the header sensor will need to be replaced or
the temperature brought into a valid range. A power cycle of the boiler will detect the sensor if it is in the
range as stated in 1.).
3. The H-Net needs a communications cable daisy-chained between boilers. Ensure that a good connection is
made on the communications board and that the lights on the dual RJ45 jack flash (roughly twice a second).
The MASTER is the only one that should flash with no communications cables plugged in.
Situation: I am in CALIBRATE and I cannot fire the boiler to adjust it.
1. Only one, but any one of the T1-T4 inputs can be used to start the boiler. All other inputs are disabled. This method
prevents an external control or Building Management System from trying to control the boiler while it is offline and
being calibrated. If the boiler is being used as a staged boiler controlled by an external control, the staged inputs need
to be disconnected before CALIBRATION, since more than one of the T inputs may be closed by the external control.
Situation: You have forgotten the password.
As a last resort, you can turn the controller off, then depress and hold the ESC key while turning it back on. This will load
the default password “AAAAAA”.
Situation: Firmware update program starts to load, but then stops.
1. Check that the termination resistors J3 and J6 are not in the termination setting. If they are, remove them temporarily
while updating. Restore them for proper communication with a building management system.
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