CHAPTER III

HEATER OPERATING

INSTRUCTIONS

NOTE

Gasket binder material used in this heater assem- bly will temporarily emit an odor and/or vapor. This condition will clear up in approximately 20 minutes and thereafter will not reoccur. Refer to Chapter 2 for ventilation.

1. OPERATING SAFETY INSTRUCTIONS

2. HEATER STARTUP

 

 

 

 

WARNING: When used without fresh air, heater

 

WARNING: During heater startup ensure that build-

may give off CARBON MONOXIDE, an odorless

 

poisonous gas. OPEN WINDOW AN INCH OR

 

ing is well ventilated.

TWO FOR FRESH AIR WHEN USING HEATER.

 

 

WARNING: This heater is equipped with a PILOT

A. Open the gas supply valve or valves.

LIGHT SAFETY SYSTEM. DO NOT TAMPER

B. Set the thermostat to the OFF position.

WITH PILOT LIGHT SAFETY SYSTEM.

WARNING: If heater shuts off, do not relight until

 

See Figure 8.

 

 

you provide fresh air. Open door for 5 minutes. If

 

 

heater keeps shutting off, have it serviced. Keep

 

 

burner and control clean.

 

 

WARNING: CARBON MONOXIDE POISONING

 

 

MAY LEAD TO DEATH. Early signs of carbon mon-

 

 

oxide poisoning resemble the flu with headache,

 

 

dizziness and/or nausea. If you have these signs,

 

 

heater may not be working properly. Get fresh air at

 

 

once! Have heater serviced.

 

 

WARNING: DO NOT USE MATCH OR OTHER

 

 

FLAME FOR LEAK TESTING.

 

 

 

 

FIGURE 8. THERMOSTAT CONTROLS

CAUTION: If the infra-red color of the grid becomes

 

 

dull when the building furnace is operating, consult

C. If the manual gas control knob on the gas valve is

gas supplier on correct gas supply piping sizes.

CAUTION: This heater is for indoor installation

 

not in the OFF position, partially depress the knob

only!

 

and rotate to the OFF position. See Figure 9.

 

 

PRESSURE

MANUAL GAS

 

REGULATOR

CONTROL

 

ADJUSTMENT

KNOB

 

STANDARD

 

 

PRESSURE

 

 

REGULATOR

WRENCH

PILOT GAS OUTLET

BOSS

(PRESSURE TAPPING

 

DIRECTLY BENEATH)

GAS IN-

 

LET

 

PILOTSTAT

PILOT FLOW ADJUSTING SCREW

(BENEATH COVER SCREW)

POWER UNIT

 

Figure 9. Gas Valve Components

Model # MH25NG/LP

HS25NG/LP

E10

Installation instructions and Owner’s Manual

Page 10
Image 10
Mr. Heater MH25NG/LP Chapter Heater Operating Instructions, Operating Safety Instructions Heater Startup, Pressure

HS25NG/LP, MH25NG/LP specifications

The Mr. Heater HS25NG/LP and MH25NG/LP are reliable and efficient heating solutions designed for both residential and commercial spaces. These powerful units deliver warmth and comfort, making them ideal for garages, workshops, and outdoor settings.

One of the standout features of the HS25NG and MH25NG is their versatility in fuel options. The HS25NG is designed to use natural gas, while the MH25NG operates on propane, providing flexibility based on user needs and availability. This adaptability allows users to select the most convenient and cost-effective energy source for their heating requirements.

Both models are equipped with a robust heat output, with the capability to deliver 25,000 BTUs per hour. This level of performance ensures quick heating even in larger spaces, establishing a comfortable environment in minimal time. The units also feature a wide heating area that can efficiently cover spaces up to 600 square feet, making them suited for various applications.

User safety and efficiency are paramount in the design of these heaters. The HS25NG and MH25NG come with an automatic shutoff system that activates if the unit tips over or detects any obstruction to airflow. Additionally, they are equipped with a built-in piezo ignition system, enabling easy and reliable lighting without the need for matches or an external ignition source.

The heaters also incorporate advanced technology to optimize performance. Their infrared heating design allows for direct and efficient warmth, minimizing energy loss and ensuring that heat is directed where it's needed most. This not only enhances efficiency but can also lead to reduced energy costs over time.

Both models are designed with portability in mind, featuring a lightweight construction and convenient carry handle, making it simple to move the unit from one location to another as needed. The durable construction ensures that they can withstand the rigors of frequent use, whether it be in a workshop or an outdoor gathering.

In summary, the Mr. Heater HS25NG/LP and MH25NG/LP are powerful, versatile, and reliable heating solutions that combine advanced technology with user-friendly features. With their strong heat output, safety features, and option for both natural gas and propane, these heaters are an excellent choice for those looking for efficient heating in any environment.