AERCO CXT-E Retrofit Kit - Manual (Page 51)

ECS and CXT-E Retrofit Instructions Kit # 27004-TAB
Technical Instruction Document TID-0141_0A
12/30/2014 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, New York 10913 • Phone: 800-526-0288 Page 51 of 76
4.7 ECS CONTROL BOX INSTALLATION
The ECS Control Box is attached to the Water Heater using the old Control Box Mounting Bracket
removed in Section 2. Install the new ECS Control Box in accordance with the following steps:
1. Attach the ECS Control Box to the Mounting Bracket using the two 1/4-20 x 1/2 “ screws
and washers provided in the Retrofit Kit.
2. Insert the top end of the Mounting Bracket under the previously loosened hex nut at the top
of the Heater Shell (Figure 4-14). After the Bracket is vertically aligned, tighten the hex nut
to secure the Mounting Bracket and ECS Control Box to the Water Heater.
WATERWIZARD
TEMP CONTROLLER
B+II
OVER TEMP SWITCH
SHELL
ECS CONTROL
BOX
MOUNTING
BRACKET
MOUNTING
BRACKET
SCREWS
SHELL FLANGE
SOLENOID
VALVE
HEX NUTS
& STUD
TOP HEAD
Figure 4-14. ECS Control Box Mounting Location
NOTE
External power at 120 to 240 VAC, 50/60 Hz is required to operate the
circuitry contained in the ECS Control Box. Power connections are made
internally by routing the power wiring through the cutout provided on the
right side of the Control Box.
3. Next, loosen the captive Phillips head screw on the right front portion of the Control Box
(Figure 4-15) to open the hinged door.
4. Swing open the door and loosen the captive Phillips head screw at the top of the recessed
panel (Figure 4-16). Swing down the panel to access terminal block TB-2 (Figure 4-17)
5. Feed the external 120 to 240 VAC, 60 Hz) power leads through the cutout in the right side
of the ECS Control Box.
6. Connect the Line, Neutral and Ground leads to the TB-2 terminals shown in Figure 4-17.
7. Close the swing-down panel after the power leads are secured to TB-2. Tighten the captive
screw to secure the recessed panel.