American Water Heater NonCondensing UltraLow NOx Outdoor Natural Gas GT110UNE user manual

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-Pressure relief valve-
The water heater has a high-temperature shutoff switch built in as a standard safety feature (called a 
Hi-Limit switch) therefore a “pressure only” relief valve is required.
•	This unit does not come with an approved pressure relief valve.
•	An approved pressure relief valve must be installed on the hot water outlet.
•	The pressure relief valve must conform to ANSI Z21.22 or CAN 1-4.4 and installation must follow local 
codes.
•	The discharge capacity must be at least...

22  Page
TEMPERATURE REMOTE CONTROLLER
-INCLUDED ACCESSORIES-

1.	 Take	off	the	 “Back plate” from the remote controller with a flat head screwdriver. (Fig. A and B)
2.	 Attach	 the	“Back plate” on the wall with the two provided screws. (Fig. B)
•	This remote controller is NOT waterproof 
     Do not install in high temperature environments, steamy conditions (such as a
     bath room), outdoors, in direct sunlight, or within the reach of children.
     Make sure the remote controller does not come into...

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3.	 Tighten	the	two	"Fork terminals" beneath the two "Remote controller terminal" screws on
      the back of the main body. (Fig. C-1)
4.   Cut out the inlet for the remote controller cable from the bottom of the main body. (Fig. C-2)
5.	 Place	 the	“Main body” back on the "Back plate", with the "Remote controller cable" running 
      out of the bottom inlet.

Remote controller
      terminals
Fig. C-1
Two fork terminals
Remote controller cable
Inlet for the...

24   Page
5.	 Pull	the	 remote’s	 wires	through	 the	hole	 at	the	 bottom	 of	the	 water	 heater’s	 casing.
6.	 Properly	 attach	the	remote’s	 wires	to	the	 remote	 controller	 terminal	on	the	 computer	 board
      (No polarity).
	 * Do NOT jump or short-circuit the wires, or computer will be damaged.
7.	 Replace	Front	Cover	 securely.
8.	 Wires	 used	for	the	 remote	 controller	 connection	 must	be:
•	Minimum 20 gauge wire (No polarity)
•	Maximum 400 ft. (122 m) long
Installation
Installation Manual...

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EASY-LINK SYSTEM
(Available on the 510U (T-D2U) model only)
The 510U (T-D2U) model water heaters can be connected with other allowable heaters (see the 
table below) with communication cables to work as a multiple-unit manifold system.
•	The Easy-Link System allows up to 4 units to manifold together.
•	A communication cable (gray color) comes with each 510U (T-D2U) model.
You can manifold from 2 to 4 units without the need for a multi-unit controller.  A 4-unit system 
has full automatic...

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5. Between the “PARENT” and the “CHILD-1” units:
 Connect the “PARENT” connector of the “PARENT” unit to the “1” connector of the “CHILD-1” unit 
using the supplied linking cable.
6. Between the “CHILD-1” and the “CHILD-2” units:
 Connect the “2” connector of the “CHILD-1” unit to the “1” connector of the “CHILD-2” unit.
7. Between the “CHILD-2” and the “CHILD-3” units:
 Connect the “2” connector of the “CHILD-2” unit to the “1” connector of the “CHILD-3” unit.
8. Verify that all cables are...

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(C) Examples of incorrect settings and /or connections
      CASE 1: Wrong DIPswitch setting on the "PARENT" unit
      CASE 2: Wrong connections between the "PARENT" unit and the 
                   "CHILD-1" unit
•	If you connect the “1" (or "2") connector of the “PARENT” unit to the “PARENT" (or "1") 
connector of the “CHILD-1” unit, the system will not work as an Easy-Link System.  The units will 
operate as individual units.
OR
PARENT...

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CASE 3: Wrong connections between the "CHILD-1" unit and the "CHILD-2" unit
•	If you connect the “PARENT” connector of the “CHILD-1” unit to the “1” connector of the 
“CHILD-2” unit, the “CHILD-2” unit will operate as an individual unit, and will not be part of the 
Easy-Link System.
      CASE 4: Remote controller connected to incorrect unit
•	Remote controller has to be connected to the “PARENT” unit.  If the remote controller is 
connected to a “CHILD” unit, it will only...

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MULTI-UNIT SYSTEM
Multiple 510U (T-D2U) models can be combined for a Multi-Unit System, along with the multi- 
unit controller (Parts 9008300005 (TM-MC02)) and remote controller (9008172005 (TM-RE40)).  
Each set of multi-unit controller and remote controller can control from 2 units to 20 units 
for commercial or residential applications.  For a 20-unit system, the computer can modulate 
between the usages of 15,000 BTU/h to 4.0 Million BTU/h.
An individual cut-off switch is recommended for...

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APPLICATIONS
-Space-Heating Applications-
-Recirculation-
*The recirculation pump is to be controlled by:
-Dual-set aquastat (recommended w/timer)
*The recirculation pump is to provide no less than 2 GPM (7.5 L/min) and no more than 4 GPM (15 L/min) through
  each activated unit in the system.
•	In order to purge air in water pipes within a closed-loop system, an air vent 
and air separator should be installed in the system.  Required circulation 
flow rates are labeled next to each application...