Aerco Modulex E8 Controller (and BCM) For Modulex EXT Bo Manual de usuario descargar pdf (Pagina 60)

E8 Controller and BCM for Modulex EXT

Installation, Operation & Maintenance Manual

CHAPTER 6: E8 SETUP & PROGRAMMING

Page 60 of 108 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0093_0A

PRI: 06/24/2013 Phone: 800-526-0288 GF-136-C

6.2.1 Wiring Connections

There are NO wiring connections required for this mode.

6.2.2 Constant Setpoint Mode Configuration

The Constant Setpoint Mode is enabled using functions contained in the EXPERT menu and

USER menu as shown on previous page.

6.2.3 Viewing Constant Set Point

The set point is viewed in the DISPLAY menu as shown below.

Viewing the Constant Setpoint

1. Use Rotary Knob to navigate to the DISPLAY menu. First sub-menu displayed will be

INSTALLATION.

2. Press the Program Key to enter the INSTALLATION sub-menu.

3. Turn Rotary Knob clockwise until T-COLL DES is displayed along with corresponding

temperature reading. This T-COLL DES reading equals the boiler set point in °F.

6.2.4 Configuring Set Point High and Low Limits Per Outside Temperature Sensor

It is often desirable to control the maximum and minimum outlet water temperature based on

outside air temperature. For instance it might be desirable to set the outlet water temperature to

be 180º F whenever the outside temperature is 15º F or below, and 120º F whenever the

outside temperature is 60º F or higher. Four parameters must be set in the E8 Controller to

accomplish this. They are: HEATSLOPE, MAX T-FLOW, MIN T-FLOW, and MAX T-COLL.

Descriptions are provided in Table 6-1.

Table 6-1: E8 Controller Outside Temperature Sensor Parameters

Parameter Description

HEATSLOPE

A curve that relates a boiler’s outflow temperature with the outside air

temperature monitored with a temperature sensor

MAX T-FLOW

The maximum allowable outlet water temperature

MIN T-FLOW

The minimum allowable outlet water temperature

MAX T-COLL

The maximum allowable outflow water collection manifold surface

temperature

To select the best HEATSLOPE value to enter into the E8 Controller, consider the set of heat

slope curves shown in Figure 6-1. Locate the two points given by the coordinate pairs (Outside

Temperature, Flow Temperature); One for the low temperature range and one for the high

temperature range. Now find the curve that best fits these two points. Do not expect any single

curve to go through either point, let alone both points. Simply pick the best fit.

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Aerco Modulex E8 Controller (and BCM) For Modulex EXT Bo Manual de usuario Pagina 60