IBC INTERGAS SFT 199 User Manual

5-3
TROUBLESHOOTING
SFT 199 TANKLESS WATER HEATER
5.2.2 Fan/Blower
Control and power to the fan is provided via a single wiring harness to the
controller.
5.2.3 Flue Gas Temperature Sensor
This sensor ensures that the unit shuts down safely if the heat exchanger or the
venting system becomes blocked.
The  ue gas temperature sensor is located at the top of the rear  ue passage,
below the top panel. To remove the sensor, unclip from the wiring harness and
unscrew from the rear  ue passage.
5.2.4 Domestic Hot Water Flow Sensor
The SFT series units are equipped with a  ow sensor to measure water  ow
through the domestic hot water circuit in the water heater. The minimum  ow
required to activate the water heater is 0.5 GPM or 2 L/min.
To service or replace the water  ow sensor:
1. Disconnect power to the unit.
2. Turn off the cold and hot water valves below the unit, release the water
pressure and then drain the domestic hot water circuit. Leave the drain valves
open.
5.2.5 Domestic Hot Water Sensor
The units are equipped with a domestic hot water temperature sensor. The sensor
is surface mounted on the hot water outlet pipe.
Figure 35: Domestic Water Flow
Sensor

IBC INTERGAS SFT 199 Specifications

General

Brand	IBC
Model	INTERGAS SFT 199
Category	Water Heater
Language	English