Sidel Combi-CombiTherm & CO2 Counter

Installation Guide

Introduction

Thank you for purchasing the Sidel Combi-Combi Therm & CO2 Counter. The

Combi-Combi Therm & CO2 Counter control panel should be installed only by

a qualified electrician, and follow local electrical codes according to the NEC

requirements. This document describes the steps for installing the Sidel Combi-

Combi Therm & CO2 Counter control panel.

For information on programming or to learn how to set up the Sidel Combi-Combi

Therm & CO2 Counter, please refer to the the Sidel Combi-Combi Therm &

CO2 Counter Operation Manual.

Inspecting the unit

Carefully inspect the unit for damage that may have occured during transport.

Verify that the list of materials on the packing slip matches the items in the

container. The Sidel Combi-Combi Therm & CO2 Counter control panel and

accessories were inspected and tested before shipment. Examine the equipment

carefully. If any shipping damage is evident in the unlikely event of material

shortage, notify Sidel Systems immediately.

Warranty

Sidel Systems warrants each Sidel Therm & CO2 Counter controller to be free from

electrical and mechanical defects in materials and workmanship for a period of

one year from the date of shipment.

Sidel Systems Combi-Combi Installation Manual • Page 1

Installation of the Panel

The Sidel Combi-Combi Therm & CO2 Counter panel installation work shall be

performed in strict observance of the procedures and rules described in this

manual.

Pay careful attention to the placement of the Therm & CO2 Counter and associated

sensor cable routing. This can significantly influence the performance and integrity

of the control panel, especially the reading of the temperatures. The maximum

distance of any sensor to the control panel should not exceed 50 ft.

The Therm & CO2 Counter panel should be mounted flush on a flat surface and

should be supported by 5/16” anchor bolts or similar bolts.

The Therm & CO2 Counter is rated for NEMA 4 installations. This means that

when the Combi-Combi Therm & CO2 Counter is properly closed, the panel will be

protected from wind-blown dust and rain.

Power connection

The panel is designed to withstand electrical noise in harsh industrial

environments. It will also conform to requirements that limit electrical emissions.

However, this does not guarantee that the product will be totally immune

from possible malfunction in those cases where severe electrical noise occurs.

Therefore, we strongly recommend that you follow the guidelines outlined in this

guide for proper wire routing and grounding to insure the proper operation of the

control panel.

The control panel must be connected to a good, high-integrity earth ground

both for safety considerations and shielding purposes. Sidel Systems cannot

overemphasize the importance of good grounding. If you fail to use good

grounding procedures during installation, sporadic malfunction of the Therm

& CO2 Counter may occur. Connect the Combi-Combi Therm & CO2 Counter’s

Page 2 • Sidel Systems Combi-Combi Installation Manual

chassis ground terminal to a reliable earth ground with a low-resistance path.

The supply power and ground wire size shall be between a #14 and #12 AWG

(THHN or equivalent). To prevent undesirable interference these wires should be

placed in a separate conduit away from the signal cables. The 120 volt power line

shall be connected to at least a 10 Amp circuit breaker. The colors are: line (black

wire), neutral (white wire) and ground (green wire).

Figure 1: power connection

Connect the line wire to terminal “L”, the neutral to terminal “N”, and the ground

wire to the green and yellow terminal as show at figure 1.

Sidel Systems Combi-Combi Installation Manual • Page 3

Thermocouple sensors installation

There are eight thermocouples to be installed. The six thermocouples with 2”

sensor tips need to be installed on the inlets and outlets of the water connections

and the two thermocouples with the 12” sensor tips need to be installed in the

inlet and outlet of the exhaust air. The threads of the water temperature sensors

should be wrapped with Teflon tape to ensure that they will be free from any

leaking. Once the sensors are properly installed, connect the thermocouple wires

accordingly, and make sure that each wire is connected to the right terminal as

shown in figure 2. The terminal for the red thermocouple wire is painted red and

the terminal for the white thermocouple wire is not painted. In order to ensure

proper connection, make a loop at the end of the wire so that the wire will make a

complete ring around the connecting screw.

Figure 2: Connection of thermocouple: 1) Make a loop on each wire.

2) Red wire to red painted terminal. White to the unpainted terminal.

3) Secure wires to terminals.

Every sensor and thermocouple wire installed should be marked with its

correspondent designation (i.e. lower section inlet water, lower section outlet

water, etc...) to insure that each sensor is properly connected to its respective

terminal at the Therm & CO2 Counter. The thermocouple wires must be routed

inside a separate conduit from the Sidel SRU Flue Gas Condenser unit to the Therm

Page 4 • Sidel Systems Combi-Combi Installation Manual

& CO2 Counter to minimize electrical noise. At the Sidel Combi-Combi Therm &

CO2 Counter panel connect each sensor wire as shown on figure 3.

Figure 4: Output connections

Output signal connections

All outputs are connected to a 120 VAC circuit. The common connection for these

terminals is number 100. The connection for the solenoid valve to close the

Figure 3: Thermocouple wire connections

Sidel Systems Combi-Combi Installation Manual • Page 5

Figure 5: Input connections

chimney valve is terminal number 51. The terminal connection for the solenoid

valve to open the chimney valve is terminal number 52.

The Sidel Combi-Combi Therm & CO2 Counter can be equipped with additional

outputs at a customer request. These outputs can be used to activate an external

device or alarm signal.

Input signal connections

All sensor input signals in the Therm & CO2 Counter panel are low voltage

(24VDC) to the PLC internal circuit. The common connection for these input

circuits is terminal 24.

Safety Precautions

Please observe the following precautions when installing the Sidel Combi-Combi

Therm & CO2 Counter. Failure to comply with these restrictions could result in loss

of life, serious personal injury, or equipment damage. Do not install or operate the unit in areas subject to explosion due to flammable gases or vapors.