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CONNECTING TANK TYPE WATER HEATERS
SINGLE APPLIANCE NETWORKS
Single Appliance Networks are formed when only one water heating appliance is connected
to the iCOMM™ network - see Figure 15 on page 20.
Multiple Appliance Networks are formed when two or more water heating appliances are
connected to an iCOMM™ network - see Figure 15 on page 20.
Proceed to Connecting Gas Fired Water Heaters below or Connecting Electric Water
Heaters on page 14.
CONNECTING GAS FIRED WATER HEATERS
Gas fired tank type water heaters require a Splitter – T Adaptor - see Table 1 on page 7.
1 Turn off power to the water heater at the on/off switch on the appliance.
2 There will always be hot surfaces on operating water heating appliances. Be careful to avoid
contact with hot pipes and other surfaces when working on or near water heating appliances.
3 Disconnect the internal network cable from the J2 socket on the display circuit board. This cable
comes from the water heater’s CCB (central control board). Access to the display circuit board on
SUF models is from the top of the water heater. On SHE/GP6 50 YTPDT models the display
housing is removed to access the display circuit board - see Figure 7 on page 13.
4 Locate a Splitter T Adaptor (included with CM and MDA hardware kits) and mount it on the water
heater away from hot surfaces & potential water leak points with included Velcro strips or wire
ties. On SHE/GP6 50 YTPDT models mount the splitter inside the Display Housing.
5 Plug the cable end of the Splitter – T Adaptor into the J2 socket on the display circuit board - see
6 Plug the internal cable from the water heater’s CCB (previously disconnected from the display
circuit board) into one of the two female sockets on the Splitter – T Adaptor.
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On Single Appliance Networks:
plug the network cable from the CM (see page 11) into the
other female socket on the Splitter – T Adaptor.
Route all cabling and wires away from hot surfaces & potential water leak points.
Reinstall any circuit board splash shields removed.
Reinstall the display housing on SHE/GP6 50 YTPDT models. Proceed to the Start Up section on
page 25.
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On Multiple Appliance Networks:
all tank type water heaters require a MDA (multiple device
adapter). Each MDA hardware kit includes a Splitter T - Adapter - see page 16.
Install one Splitter T - Adapter as described above on each gas fired tank type water heater being
added to the network.
If there will only be “gas fired” tank type water heaters on the network proceed to Multiple
Appliance Networks on page 16 when finished installing the Splitter T - Adapters.
If any commercial electric water heaters are to be added to the network see page 14.