Table of Contents

035-17233-000-C-0702

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . 3

REFERENCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

RENEWAL PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

AGENCY APPROVALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

LIMITATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 LOCATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 RIGGING AND HANDLING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 CLEARANCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 DUCTWORK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 FIXED OUTDOOR AIR INTAKE DAMPER . . . . . . . . . . . . . . . . . . 6 CONDENSATE DRAIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 COMPRESSORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 FILTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 SERVICE ACCESS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 THERMOSTAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 POWER AND CONTROL WIRING . . . . . . . . . . . . . . . . . . . . . . . . 7 COMBUSTION DISCHARGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 GAS PIPING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 GAS CONNECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 L.P. UNITS, TANKS AND PIPING . . . . . . . . . . . . . . . . . . . . . . . 10 VENT AND COMBUSTION AIR HOODS . . . . . . . . . . . . . . . . . . 11 OPT ECONO/MOTORIZED DAMPER RAIN HOOD . . . . . . . . . 11

ENTHALPY SET POINT ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . 11

PWR EXH/BARO RELIEF DMPR & RAIN HOOD OPT . . . . . . . 11

OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

COOLING SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 PRELIMINARY OPERATION COOLING . . . . . . . . . . . . . . . . . . 19 COOLING SEQUENCE OF OPERATION . . . . . . . . . . . . . . . . . 19

NO OUTDOOR AIR OPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 ECONOMIZER WITH SINGLE ENTHALPY SENSOR . . . . . . . . . . . . . 19 ECONOMIZER WITH DUAL ENTHALPY SENSORS . . . . . . . . . . . . . . 19 ECONOMIZER WITH POWER EXHAUST . . . . . . . . . . . . . . . . . . . . . . 19 MOTORIZED OUTDOOR AIR DAMPERS . . . . . . . . . . . . . . . . . . . . . . 19 CONTINUOUS BLOWER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

SAFETY CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 HEATING SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

CONTINUOUS BLOWER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 INTERMITTENT BLOWER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

SAFETY CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 HEAT ANTICIPATOR SETPOINTS . . . . . . . . . . . . . . . . . . . . . . 21

START UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

PRE-START CHECK LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 OPERATING INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 21

TO LIGHT PILOT AND MAIN BURNERS: . . . . . . . . . . . . . . . . . . . . . . . 21 TO SHUT DOWN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

POST-START CHECK LIST (GAS) . . . . . . . . . . . . . . . . . . . . . . 22 MANIFOLD GAS PRESSURE ADJUSTMENT . . . . . . . . . . . . . . 22 PILOT CHECKOUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 BURNER INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 BURNER AIR SHUTTER ADJUSTMENT . . . . . . . . . . . . . . . . . . 23 CHECKING SUPPLY AIR CFM . . . . . . . . . . . . . . . . . . . . . . . . . 23 ADJUSTMENT OF TEMPERATURE RISE . . . . . . . . . . . . . . . . 24

BELT DRIVE BLOWER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

CHECKING GAS INPUT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

NATURAL GAS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

SECURE OWNER’S APPROVAL . . . . . . . . . . . . . . . . . . . . . . . . 24

MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

NORMAL MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

FILTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 MOTORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 OUTDOOR COIL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 BURNER & PILOT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 TO CLEAN BURNERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 COMBUSTION AIR DISCHARGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

CLEANING FLUE & HEATING ELEMENTS . . . . . . . . . . . . . . . .25

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

	LIST OF FIGURES
Fig. #		Pg. #
1	TYPICAL RIGGING	. . . 5
2	CENTER OF GRAVITY	. . . 5
3	FIXED OUTDOOR AIR DAMPER	. . . 6
4	RECOMMENDED DRAIN PIPING	. . . 7
5	TYPICAL FIELD WIRING	. . . 9
6	EXT SUPPLY CONN EXT SHUT-OFF	. . 10
7	BOTTOM SUPPLY CONN EXT SHUT-OFF	. . 10
8	VENT AND COMBUSTION AIR HOODS	. . 11
9	ENTHALPY SETPOINT ADJUSTMENT	. . 12
10	UNIT DIMENSIONS FRONT VIEW	. . 14
11	UNIT DIMENSIONS RAINHOOD	. . 14
12	UNIT DIMENSIONS REAR VIEW	. . 15
13	208 VOLT & HIGH SPEED DRIVE ACCY	. . 16
14	GAS VALVE PIPING	. . 20
15	GAS VALVE AND CONTROLS	. . 21
16	TYPICAL GAS VALVE	. . 22
17	PROPER FLAME ADJUSTMENT	. . 22
18	TYPICAL FLAME APPEARANCE	. . 23
19	BELT ADJUSTMENT	. . 23
20	PRESSURE DROP	. . 24
21	TYPICAL FLUE BAFFLE INSTALLATION	. . 26
	LIST OF TABLES
Tbl. #		Pg. #

1 PRODUCT NOMENCLATURE . . . . . . . . . . . . . . . . . . . . 3 2 UNIT APPLICATION DATA . . . . . . . . . . . . . . . . . . . . . . 4 3 CONTROL WIRE SIZES . . . . . . . . . . . . . . . . . . . . . . . . . 8 4 GAS HEAT APPLICATION DATA . . . . . . . . . . . . . . . . . 9 5 PIPE SIZING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 6 PHYSICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 7 DHG VOLTAGE LIMITATIONS . . . . . . . . . . . . . . . . . . 13 8 MINIMUM CLEARANCES . . . . . . . . . . . . . . . . . . . . . . 13 9 DHG ELECTRICAL DATA . . . . . . . . . . . . . . . . . . . . . . 13 10UTILITIES ENTRY . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 11DHG 15T SUPPLY AIR BLOWER PERFORMANCE . . 16 12DHG 20T SUPPLY AIR BLOWER PERFORMANCE . . 17 13STATIC RESISTANCES . . . . . . . . . . . . . . . . . . . . . . . . 18 14POWER EXHAUST PERFORMANCE . . . . . . . . . . . . . 18 15BLOWER MOTOR AND DRIVE DATA . . . . . . . . . . . . . 18 16LIMIT CONTROL SETTING . . . . . . . . . . . . . . . . . . . . . 21 17HEAT ANTICIPATOR SETPOINT . . . . . . . . . . . . . . . . 21 18GAS RATE - CUBIC FEET PER HOUR . . . . . . . . . . . . 24

2	Unitary Products

DHG180, DHG240 specifications

Energy Tech Laboratories has made significant strides in the realm of energy efficiency and renewable technologies with the introduction of their innovative models, the DHG240 and DHG180. These advanced devices are designed to optimize energy consumption, minimize environmental impact, and enhance overall energy management.

The DHG240 model stands out with its high-capacity performance, delivering a robust output of 240 kW. This unit is ideal for large facilities and industrial applications, where energy demands are high. One of its main features is its advanced algorithm for energy distribution, which allows for optimal load balancing across various operational units. This ensures that energy is used efficiently, reducing waste and lowering operational costs.

Similarly, the DHG180 is designed for medium-sized operations, providing an output of 180 kW. It offers an effective solution for businesses seeking to improve energy efficiency without the excessive overhead costs typically associated with larger systems. The DHG180 incorporates state-of-the-art monitoring systems that provide real-time data on energy consumption, allowing operators to make informed decisions and adjust settings as needed.

Both models integrate cutting-edge technologies such as smart grid capabilities and renewable energy sources. They are equipped to handle integration with solar panels and wind turbines, enabling facilities to harness clean energy and reduce reliance on fossil fuels. This feature not only contributes to sustainability goals but also provides a buffer against fluctuating energy prices.

The design of both the DHG240 and DHG180 prioritizes durability and reliability. They are constructed from high-quality materials that withstand harsh operational conditions, ensuring a long lifespan and reduced maintenance costs. Furthermore, these systems are compliant with various energy efficiency standards, making them a responsible choice for environmentally conscious businesses.

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.

Energy Tech Laboratories DHG240, DHG180 installation instructions Table of Contents

Models: DHG180 DHG240

Fig. #

Pg. #

DHG180, DHG240 specifications