COMBUSTION AIR BLOWER

Under normal operating conditions, the combustion air blower should be checked and cleaned prior to the heating season with the power supply disconnected. Use a small brush to clean blower wheel.

ELECTRICAL

1.Check all wiring for loose connections.

2.Check for correct voltage at unit (unit operating).

3.Check amperage draw.

FLUE AND CHIMNEY

Check all vent and vent connector joints for tightness. Ensure that connections are sealed and that there are no blockages.

PARTS LIST:

SEE BACK PAGE FOR PARTS ORDERING INFORMATION

FAILURE TO OPERATE

If unit fails to operate check the following:

1.Is thermostat calling for heat?

2.Is main disconnect closed?

3.Is there a breaker tripped or a fuse blown?

4.Is gas turned on at meter?

5.Is manual shutoff valve open?

6.Is unit ignition system in lock out? If unit locks out again, call service technician to inspect unit.

7.Is pressure switch closed? Obstructed flue will cause unit to shut off at pressure switch. Check flue passage and outlet.

REPAIR PARTS

When ordering repair parts include the complete unit model number listed on the unit rating plate. For example: MHU45/75 and HSU45/75.

REF #.

DESCRIPTION

45 ITEM #

QUANTITY

75 ITEM #

QUANTITY

1

CIRCUIT BOARD

60105

1

S/A

1

2

LIMIT SENSOR

60015

1

S/A

1

3

ELECTRODE IGNITER

60035

1

S/A

1

4

ELECTRODE SENSOR

60040

1

S/A

1

5

BURNER

..60050

3

S/A

5

6

IGNITION LEAD

60045

1

S/A

1

7

SENSOR LEAD

60046

1

S/A

1

8

ORIFICE (NAT)

60049

3

S/A

5

9

ORIFICE (LP)

60056

3

S/A

5

10

GAS VALVE (NAT)

02812

1

S/A

1

11

GAS VALVE (LP)

02811

1

S/A

1

12

TRANSFORMER

60025

1

S/A

1

13

PRESSURE SWITCH

60030

1

S/A

1

14

HI LIMIT SENSOR HEAT EXCH. ...................................60022

1

. S/A

1

15

PRESSURE SWITCH TUBE

60031

1

S/A

1

16

INDUCED DRAFT MOTOR

60020

1

S/A

1

17

VENT ADAPTER

60130

1

60140

1

18

INDUCED DRAFT MOTOR GA SKET

60135

1

S/A

1

19

BACK BRACKET

60075

1

S/A

1

20

FRONT BRACKET

60080

1

S/A

1

21

LOUVERS

60100

5

S/A . .............................. 7

22

LOUVER SPRING

60103

5

S/A

7

23

FLUE BOX

60085

1

60087

1

24

FLUE BOX GASKET

60090

1

60092

1

25

HEAT EXCHANGER

60065

1

60068

1

26

ACCESS DOOR

60070

1

. . 60072

1

27

FRONT

60095

1

60097

1

28

SIDE DOOR

60110

1

. . . 60112

. 1

29

WRAPPER

60115

1

. . . 60117

1

30

FAN MOTOR

60055

1

60054

1

31

FAN GUARD

60120

1

. . . 60122

1

32

FAN ASSEMBLY

60125

1

. . . 60127

1

Enerco Compact Unit Heater

14 Operating Instructions and Owner’s Manual

Page 13 Page 15
Page 14
Image 14
Enerco MHU 75, MHU 45 owner manual Parts List
Page 13 Page 15

MHU 45, MHU 75 specifications

Enerco is a renowned name in the heating industry, particularly famous for its innovative line of forced air propane heaters. The Enerco MHU 45 and MHU 75 models are among the top choices for both residential and commercial heating needs, showcasing a range of advanced features and technologies designed for efficient performance and user convenience.

The MHU 45 and MHU 75, as their names suggest, deliver heating outputs of 45,000 BTU and 75,000 BTU respectively, making them suitable for a variety of applications, from small workshops to larger industrial spaces. Both models are equipped with a powerful fan that ensures even heat distribution, rapidly warming up an area while maintaining energy efficiency.

One of the standout features of the MHU series is their lightweight and portable design, allowing users to easily move the heaters from one location to another. This is particularly beneficial in a work environment where heating needs may vary based on project demands. The integrated handle and rubber feet add to the convenience, ensuring stability during operation.

The MHU series also incorporates safety technologies that have been meticulously designed to protect both the unit and the user. Both models are equipped with a built-in safety shut-off valve that automatically turns the heater off in the event of a tip-over or overheating, providing peace of mind for users.

Efficiency is a key characteristic of the Enerco MHU heaters. They utilize propane fuel for combustion, which tends to burn cleaner than other fossil fuels. This not only contributes to a reduced environmental impact but also translates to savings on energy costs for users. The MHU 45 and MHU 75 feature adjustable heat settings, which allow for customized heating to match specific needs, further enhancing their efficiency.

In terms of runtime, the MHU series offers impressive performance. The fuel consumption is optimized to ensure users can rely on these heaters for extended periods without frequent refueling interruptions.

In summary, the Enerco MHU 45 and MHU 75 are powerful, portable, and efficient propane heaters designed to deliver excellent performance in a variety of settings. With their robust safety features, lightweight design, and ability to provide rapid heat distribution, they stand out as exceptional choices for those seeking reliable heating solutions. Whether for industrial, commercial, or residential use, these models underline Enerco's dedication to quality and innovation in heating technology.
Top Page Image Contents