Mr. Heater MHT 45 General Guidelines Residential, Horizontal Installations, Tilted Installations

General Guidelines (Residential)

Regardless of the venting arrangement that will be connected to the heater, the following general guidelines for venting must be followed:

1.	The installation must conform with local codes or in the absence
	of local codes with the National Fuel Gas Codes, ANSI Z223.1/
	NFPA 54, Natural Gas and Propane Installation Code, CSA BI49.1
	for Canada.
2.	Appliance input ratings are based on sea level operation and
	need not be changed for operating up to 2,000 feet (609.9m)
	elevation. For operation at elevations above 2,000 feet (609.9m)
	manufactured to specified deration condition for Canada and the
	United States.
3.	The appliance and its appliance main gas valve must be
	disconnected from the gas supply piping system during any
	pressure testing of that system at test pressures in excess of ½
	psi. (3.5kPa.).
	The appliance must be isolated from the gas piping system by
	closing equipment shutoff valve during pressure testing of the gas

damage. Clearances from vehicles parked beneath heaters must be maintained. Signs should be posted to identify any possible violation of the clearance distances form the heater in the vehicle areas. Maximum allowable stacking height in storage areas should be identified with signs or appropriate markings. The illustrations and Table on the adjoining page specify the minimum required safe distances from combustibles.

Horizontal Installations

A

supply piping system at test pressures equal to or less than ½ psi.

(3.5kPa.).

C

B

	(WARNING) Materials and items, when stored under this heater,
	will be subjected to radiant heat and could be seriously damaged.
4.	All horizontal venting sections must slope away from the heater at
	a rate of ¼” per foot.
5.	The total length of vent pipe (horizontal and vertical runs
	combined, plus the length of the exterior termination) must not
	exceed 25 feet, and must not be less than 5 feet.
6.	The vent terminal, mounted outside of the building, should not be
	located above walkways. Condensate produced during operation
	of the heater could drip onto the walkway and could form ice
	during cold weather.
7.	Be sure that the venting installation is in accordance with all
	applicable local codes and recommendations of the local gas
	company.
8.	DO NOT connect this heater to a separate chimney, and DO
	NOT common vent with any other fuel burning appliance. Gas
	appliances must not be connected to a chimney flue serving a
	separate solid-fuel burning appliance.
9.	Maintain a minimum of 1-inch clearance from combustibles
	around all vent pipes.
10. Seal all vent pipe connections with high temperature silicone
	sealant and secure each connection with three sheet metal
	screws.

Minimum Required Safe Distances from Combustibles

In all situations, the minimum required safe distances from combustibles must be maintained. Combustibles are materials which may catch on fire and include many common items such as wood, paper, rubber, fabrics, etc. Combustible materials such as those noted, and any other combustible materials must not be placed closer to any base or side of the MHT tube heater than the distances noted in the diagrams on the following page. If you have any questions about the minimum required safe distances from combustibles,

or the associated diagrams, please contact your installer, Enerco representative or distributor, of Enerco Technical Products during normal business hours which are Monday through Friday, 8:15 a.m. to 4:45 p.m., Eastern Time.

Telephone: (800) 251-0001 or (216) 916-3000

It is important to keep the minimum required safe distances from combustibles at all times to avoid death, personal injury or property

F

B

Note: Dimension “C” indicates the minimum required safe distances from combustibles, it DOES NOT indicate the required mounting height. The minimum mounting height is 7 feet, except for aircraft hangars and public garages.

45° Tilted Installations

	24" Min							A
				Approx. 45°						G
		D
								F
Note: Dimension “E” indicates the mini-								E
	mum required safe distances from
	combustibles, it DOES NOT indicate
	the required mounting height. The
	minimum mounting height is 7
	feet, except for aircraft hangars and
	public garages.
	MINIMUM REQUIRED SAFE DISTANCES
	Model	BTU/Hr	A		B	C	D	E	F		G
	MHT-45	45,000	5"		24"	54"	38"	36"	6"		4"

Mr. Heater Gas-Fired Low-Intensity Infrared Heater 9 Operating Instructions and Owner’s Manual