Where can the heater be installed?
The MHT tube heater is intended for installation in the following areas:
•Residential applications, such as:
—garages
—greenhouses
—workshops
•Light industrial/commercial applications, such as:
—entranceways
—lobby areas
—Lunch rooms
—aircraft hangars (see Section 2 for restrictions)
—public garages ( see Section 2 for restrictions)
Where can’t the heater be installed?
The MHT tube heater is not intended for installation in the following areas:
•Residential living or sleeping areas
•Basements
Installer’s responsibility
The MHT tube heater , as well as the gas and electrical supply, and the venting of the heater must be installed in accordance with applicable specifications and codes. Only firms (or individuals) well qualified in this type of work should install the system. Consult local Building Inspectors, Fire Marshals for further guidance.
Use the information given in this manual together with the cited codes and regulations to perform the installation. The installer must furnish all needed materials that are not furnished as standard equipment. It is also the installer’s responsibility to see that the materials and installation methods used, result in a job that is workmanlike in appearance and is in compliance with all applicable codes and requirements to this manual. The installer must give this manual to the owner.
Section 2 PLANNING
General
This section provides the following information:
•Defines the gas, electric and venting requirements for the MHT tube heater.
•Specifies the national standards and applicable codes that apply to the gas, electric and venting requirements.
•Specifies the national standards and applicable codes that apply to
Gas Service Requirements:
System Requirements
Inlet Connection
Connection: ½” Male NPT
Inlet Pressure
Natural Gas:
Minimum - Inlet 5.0” w.c.
Maximum – Inlet 10.5” w.c.
LP Gas (propane):
Minimum – Inlet 10.5” w.c.
Maximum – Inlet 13.0” w.c.
Manifold Pressure
Natural Gas: 4.0” w.c.
LP Gas (propane): 10.0” w.c.
Type of Gas
The type of gas appearing on the nameplate must be the type of gas used. Installation must comply with local codes and recommendations of the local gas company. United States: Refer to National Fuel Gas Code, ANSI Z223.1 – latest revision, (same as NFPA Bulletin 54). Canada: Refer to Can
Gas Supply Lines
The size of the gas supply lines must comply with local codes and recommendations of the local gas company. United States: Refer to National Fuel Gas Code, ANSI Z223.1 – latest revision, (same as NFPA Bulletin 54). Canada: Refer to CAN
A 1/8” NPT plugged tap must be installed in the gas line connection immediately upstream of the heater that is farthest from the gas supply meter. The tap is required for checking system gas pressure.
Meter and Service
Meter and service must be large enough to handle all the heaters being installed plus any other connected load. The gas line which feeds the system must be large enough to supply the required gas with a maximum pressure drop of ½” w.c. When gas piping is not included in the layout drawing, the local gas supplier will usually help in planning the gas piping.
Mr. Heater | 6 | Operating Instructions and Owner’s Manual |
