Aqua Pro Controller Instructions

ManualsBrandsWeil-McLain ManualsWater HeatersAqua Pro 55 - 55 Gal. - Indirect Water Heater

Temperature Control

for Weil-McLain

Aqua Plus and

Aqua Pro

Indirect Water Heater

Installation Instructions

and Operating Manual

The AcuTemp utilizes an microcontroller-based

design to control water temperature in the

Weil-McLain Aqua Plus and Aqua Pro Indirect Water

Heater. An advanced software algorithm closely

monitors the rate of tank temperature changes and

controls the heating source to minimize fluctuations

in tank temperature while optimizing fuel efficiency.

The control features adjustable temperature

settings for both residential and commercial

temperature operating ranges.

WARNING

All work must be performed by a qualiﬁed and licensed professional

in accordance with all applicable codes and ordinances.

WARNING

Electrical shock hazard. To prevent electrical shock, death, or

equipment damage, disconnect power supply before installing or

servicing control.

NOTICE - Read these instructions completely before proceeding

with the installation. Retain these instructions for future reference.

Weil-McLain

500 Blaine Street

Michigan City, IN 46360-2388

http://www.weil-mclain.com

DIMENSIONS RATINGS

Input 24 VAC, 60 Hz

Power 2.4 VA

Output Dry contacts, 50 va

@ 24 VAC, 60 Hz

Ambient temp 30°F - 140°F

Operating temp 60°F - 180°F

2-31/32"

2-3/4"

3-17/32"

Summary of content (6 pages)

PAGE 1
Installation Instructions and Operating Manual Temperature Control for Weil-McLain Aqua Plus and Aqua Pro Indirect Water Heater The AcuTemp utilizes an microcontroller-based design to control water temperature in the Weil-McLain Aqua Plus and Aqua Pro Indirect Water Heater. An advanced software algorithm closely monitors the rate of tank temperature changes and controls the heating source to minimize fluctuations in tank temperature while optimizing fuel efficiency.
PAGE 2
MOUNTING THE CONTROL – NEW INSTALLATION 1 Locate the sensor leads on the top of the tank. 2 Route the sensor wire through the opening in the 3 Plug the sensor wire into the sensor input. 4 Insert the sensor wire into the channel in the back 5 Attach the control to the top plastic cap of the 6 Add a third screw through the top of the control. The terminals are not polarity sensitive. tank and secure with two screws. rear of the control of the control.
PAGE 3
MOUNTING THE CONTROL – AQUA PLUS REPLACEMENT INSTALLATION 1 Remove faceplate and existing thermostat and sensor; disconnect existing wires to domestic water input. 2 Insert new sensor into tank; thread new sensor wire and existing domestic water input wires through hole in faceplate. 4 Reattach faceplate and mount new control with 3 provided screws. Reinstall control cover once wiring connections are made and the control is mounted.
PAGE 4
WIRING THE CONTROL REFER TO “WIRING THE CONTROL” BELOW OR YOUR TANK MANUAL FOR WIRING INSTRUCTIONS. 1 Connect a 24 VAC power source to the “24 VAC Input” terminals (24 VAC transformer field supplied). 2 Connect the “Output Contacts” to the zone or boiler control’s domestic water input. NOTE: The “Output Contacts” are isolated dry contacts that close when the control calls for heat. 3 Eliminate stray voltage in the power circuit by connecting the 24VAC power to AC2 and grounding AC1.
PAGE 5
WIRING THE CONTROL – continued Wiring the control to ECO (1176-120/121), Evergreen (1176-160), Slimfit 550-750 (1176-170) and Ultra (1176-100) boiler controls Wiring the control to GV90+ (1135-700), CGa (1135-05/606), CGi (1135-615), and the EG Water (1135-605) boiler controls Wiring the control to WM97+ (1176-112/113) boiler controls 5
PAGE 6
DISPLAY During normal operation, one of two indicating lights will appear on the display. If the control is calling for heat, the indicating light on the bottom right of the screen will illuminate. When the water temperature reaches the control set point, the indicating light on the left of the display will illuminate indicating that the tank is up to temperature and the control is in Standby. Calling for Heat Standby SETTING THE CONTROL Push the setting dial to enter the Temperature Setting mode.