THERMOSTAT1
TERMINALS

035-17233-000-C-0702

CONTROLWIRING

COOLINGONLY(24VOLTTHERMOSTAT)

UNITTERMINAL

BLOCK1TB2

COOLING/HEATING(24VOLTTHERMOSTAT)

UNITTERMINAL

BLOCK1TB2

THERMOSTAT1

R

 

 

 

R

 

TERMINALS

 

RH

 

 

 

 

 

 

Y1

 

 

 

 

 

 

 

 

 

Y1

 

 

 

 

 

 

 

 

Y2

 

RC

 

Y2

 

 

 

 

 

 

 

 

 

 

 

 

R

W1

ADD

Y1

 

W1

 

 

W2

 

 

 

 

 

JUMPER

 

 

W2

 

Y1

G

Y2

 

 

 

 

G

 

 

 

 

 

 

 

 

 

 

 

Y2

B

 

W1

 

B

 

X

24VOLT

 

 

 

 

 

24VOLT

 

 

 

X

 

 

TRANSFORMER

W2

3

G

A1

A1

TRANSFORMER

 

 

 

 

 

 

 

A2

 

G

 

A2

 

124VoltThermostat2TH04701224or2TH04701524

 

 

Y3

 

(withSubbase2TB04700224).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Terminalblock1TB-locatedonrelayboardin24-voltsection

124VoltThermostat2TH04701024or2TH04701524

oftheunitcontrolbox.

 

 

 

 

 

 

 

 

 

(withSubbase2TB04700324).

 

 

 

 

 

 

 

 

 

 

 

 

2Terminalstrip1TB-locatedonrelayboardin24-voltsection

 

COOLINGONLY(24VOLTTHERMOSTAT)

oftheunitcontrolbox.

 

 

3Secondstageheatingisnotrequiredonunitswithasinglestage

 

THERMOSTAT1

 

 

 

 

 

 

 

 

 

 

TERMINALS

 

 

 

 

 

 

 

 

 

electricheater.

 

 

 

 

 

 

 

 

 

 

 

 

 

UNITTERMINAL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

RC

 

 

 

 

 

 

BLOCK1TB2

 

 

POWER WIRING

 

RH

 

 

 

 

 

 

 

R

 

 

 

 

 

 

 

 

 

Y1

 

 

 

 

 

 

 

Y1

 

 

 

 

 

 

 

 

ADD

Y2

 

 

 

 

 

 

 

Y2

 

LINEVOLTAGE

L1

Refertothe

JUMPER

W1

 

 

 

 

 

 

 

W1

 

TERMINAL

L2

 

ELECTRICALDATA

 

 

 

 

 

 

 

 

 

 

 

W2

 

3

 

 

 

W2

 

BLOCK2TB

L3

 

tablestosizethe

 

 

 

 

 

 

 

powerwiring,the

 

G

 

 

 

 

 

 

 

G

 

INCONTROLBOX

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

fusesandthe

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

B

 

 

 

 

 

 

 

B

 

 

 

 

 

 

 

disconnectswitch.

 

LED1

 

 

 

 

 

 

 

X

24VOLT

GROUNDLUG

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LED2 NOTUSED

4

 

 

 

 

 

A1

TRANSFORMER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

COM

 

4

 

 

A2

 

 

 

 

 

 

 

 

ADD

A1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

JUMPER

A2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

T

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

T

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TOREMOTESENSOR

2TH04702224IFUSED

1Electronicprogrammablethermostat2ET04700224(includessubbase).

2Terminalblock1TB-locatedonrelayboardin24-voltsectionoftheunitcontrolbox.

3Secondstageheatingisnotrequiredonunitswithasinglestageelectricheater.

4TerminalsA1andA2providearelayoutputtoclosetheoutdooreconomizerdampers whenthethermostatswitchestotheset-backposition. NOTE:Fansswitchmustbein"ON"positionforminimumventilationduringheateroperation.

FIGURE 5 : TYPICAL FIELD WIRING

TABLE 4: GAS HEAT APPLICATION DATA1

 

Input Capacity (Mbh)

 

Output Capacity (Mbh)

 

 

Temp Rise °F

 

 

 

 

 

 

 

Gas Rate2

0 to 2000 Feet

2,000 to 4,500 Feet

0 to 2000 Feet

2,000 to 4,500 Feet

Available on

At Full Input

3

Above Sea Level4

Above Sea Level

Above Sea Level4

Above Sea Level

Models

(Ft.3/Hr.)

 

 

 

 

Min.

Max.

Min.

Max.

Min.

Max.

 

 

Min.

Max.

 

 

 

 

 

 

 

 

 

 

 

300

150

270

135

240

213

15 & 20 Ton

279

20

50

 

 

 

 

 

 

 

 

 

 

 

 

400

200

360

180

320

281

15 & 20 Ton

372

30

60

 

 

 

 

 

 

 

 

 

 

 

 

1Heaters are shipped available fro natural gas, but can be converted to L.P./Propane with Kit Model No. 1NP0418. 2Based on maximum input and 1075/Btu/Ft.3

3The air flow must be adjusted to obtain a temperature rise within the range shown.

4MBH rating should be reduced at the rate of 4 percent for each 1,000 feet above 4,500 feet.

Unitary Products

9

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Energy Tech Laboratories DHG180, DHG240 installation instructions Controlwiring

DHG180, DHG240 specifications

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User-friendliness is another hallmark of these devices. An intuitive interface allows operators to easily monitor and control energy usage, while remote access compatibility enables management from off-site locations. This flexibility is crucial in today’s fast-paced business environment.

In conclusion, Energy Tech Laboratories’ DHG240 and DHG180 models represent the forefront of energy technology. By delivering high performance, integrating renewable solutions, and prioritizing ease of use, these units empower businesses to achieve their energy efficiency goals while promoting sustainability. Whether for large industries or medium-sized enterprises, these systems are engineered to meet the dynamic needs of modern energy management.