Monitor 422 what does the flame inside the heater look like if running normally?

SOURCE: have monitor 422, have had it serviced and flame

JM,

When you have a smell from a Monitor you have a real problem. You need to get to the bottom of the problem as soon as possible due to the chance of CO gas. If the heater was just serviced I would look at the connection for the exhaust on the back of the stove. The little Z pipe needs to be all the way in on both sides. Monitors are close to the wall and sometimes it's very hard to get that pipe all the way in. Since it is a serious problem I would look at all the gaskets on the burner and heat exchanger to be sure none are missing or broken.

I can't stress this enough. If you are smelling fumes from a Monitor you must get to the bottom of it before you continue to use the heater.

Tom Hawkins
[email protected]

SOURCE: heater won't ignite on Monitor 422

check out solution for mon 41 it is same

SOURCE: is the monitor 422 heater considered a direct vent wall heater

Yes, the Monitor 422 heater is direct vent type.

You must install the supplied double-walled vent tube between the heater and outdoors. Failure to properly install the vent tube will quickly deplete oxygen from the space it is operating in. That is a potentially deadly situation.

The pipe is special. The inner pipe is for hot exhaust gasses to be sent outside and the outer walled pipe is for fresh combustion air to be brought into the heater. This set up is why the heater does not create drafts in the home.