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4 on/off control (enable/disable), Am series boilers and water heaters – AERCO AM Series Boiler User Manual User Manual

Page 57

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AM Series Boilers and Water Heaters

CHAPTER 3 – INSTALLATION

OMM-0100_0B

AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913

Page 57 of 156

GF-146

Ph.: 800-526-0288

PRI - 07/14/14

3.14.4 On/Off Control (Enable/Disable)

For remote enabling/disabling of a boiler, follow the instructions below.

Wiring a Thermostat to the Boiler

1. Remove the boiler front cover according to the instructions in Section 6.1.15.

2. Connect the leads of a two conductor cable (with a minimum cross section of #18 AWG) to

the thermostat and run the cable to the boiler electrical junction box.

3. Open the boiler electrical junction box cover and connect the leads of the cable to the “10”

and “11” terminals as shown in Figure 3-26.

4. Enter the Installer Menu (Section 5.4) and ensure that parameter 2003 is set to 0 (zero).

NOTE

The maximum cable length permitted is 32 feet (10 meters). For
longer lengths, up to 300 feet (100 meters), a shielded cable with
the shield connected to the ground must be used.

Figure 3-26: Thermostat Electrical Connection to Boiler (Terminals 10 and 11)

3.14.5 Installing the Outdoor Temperature Sensor - Boilers

The outdoor temperature sensor is supplied with the boiler. Install the outdoor temperature
sensor on an exterior wall of the building facing NORTH or NORTH-EAST, at a height of
between 4 feet and 6 feet from the ground level. On multi-story buildings, install the sensor near

the upper half of the second floor. Do not install the sensor above doors, windows or ventilation
outlets nor directly under balconies or gutter pipes. Do not shield the outdoor temperature
sensor. Do not install the sensor on walls without overhangs, or that are not protected from rain.
Connect the outdoor temperature sensor to the boiler to terminals “14” and “15”

(See Figure 3-21).

To connect an outdoor sensor to the boiler, perform the following:

5 feet