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Old 11-07-2019, 11:19 AM   #1
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Heating question

I have noticed that there is a difference in the heat from my loop 1 and the heat in loop 2 especially in the bedroom. I have to set the thermostat several degrees higher in the bedroom (loop 2 ) to get it the same temp as the living room. I was checking behind my register in the bedroom . I discovered that there is a large area where the radiator is mounted. All though the radiator is mounted very close to the register I can't help think that reducing the area of the box the radiator is sitting in would help to get more heat into the bedroom and not heat up the area of the box that doesn't need to be heated. Thoughts anyone? I will post pictures in next post.
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Old 11-07-2019, 11:20 AM   #2
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Pictures of the bedroom. Click image for larger version

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Old 11-07-2019, 11:27 AM   #3
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The fan is connected directly to the radiator, so I don't think the size of the box would make much difference. Now if the fan was sitting in the back of that box there my be some impact.

I think your issue may be more about the length of the hose run to rear of the coach.
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Old 11-07-2019, 12:12 PM   #4
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Originally Posted by Dutch Star Don View Post
The fan is connected directly to the radiator, so I don't think the size of the box would make much difference. Now if the fan was sitting in the back of that box there my be some impact.

I think your issue may be more about the length of the hose run to rear of the coach.
You might be correct. I had to rework the front one in the dash. It had 3 tubes attached to the radiator and the majority of heat was keeping the dash very warm as well as the 2 trays above it and not much coming out into the living room area. I boxed it in and now all the air comes out into the living room. That is why I was thinking about the one in the bedroom.
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Old 11-07-2019, 04:17 PM   #5
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You could probably make a tin housing (ducting) and force it directly out the vent. Check Home Depot, there may already be a piece of premade ducting that would fit the exterior of the radiator and sit flush against the back of the vent.
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Old 11-07-2019, 04:23 PM   #6
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Cardboard and duct tape would do to see if a duct would help. U can always build a better one later if u choose.
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Old 11-07-2019, 06:10 PM   #7
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On my front one I used insulboard with the reflective gray on the inside of the plenum. Might try to put one together tomorrow. I already have the materials so all I've lost is time if it doesn't help.
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Old 11-08-2019, 04:18 PM   #8
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It only took about 45 minutes and I had this cut out, taped and installed. I'll see if there is any noticeable difference. Click image for larger version

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Old 11-18-2019, 07:20 PM   #9
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Took the coach out this last Friday for a long weekend. Was pretty chilly and had the heater going all weekend. Seems like the bedroom was warmer. Don't have any scientific proof and maybe psychological but think I'll keep the radiator incased with the box I made for it.
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Old 11-18-2019, 08:44 PM   #10
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I have two thoughts for you o consider.

First, the temperature sensor for the bedroom may be in a warmer area than the sensor for the front area. That would require a higher setting for the bedroom thermostat than you need for the front area to maintain a temperature that feels the same.

Second, as for the box, I would have made a small duct between the front of the heater to the grill so all the heated air has to go out the grill. It appears that a lot of the heated air can just go around the sides (3/4" framework setback) to the back of the heater and blow through again.
I don't see any grill for cold air access to the back of the heater. If cold air can't get to the back of the heater, there won't be much coming out the front. I think your new box will just add additional restrictions the the air movement.

I might change my thoughts some if you had a picture of the front door closed. It could be the whole door front is a grill and cold air intake is to the outer sides of the door and the warmed air is to come out the center of the door.
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Old 11-18-2019, 08:56 PM   #11
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Have you considered putting a thick weather stripping on the font of the heater so it touches the venting. It may force all of the heated air through the vent and into the room.
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Old 11-19-2019, 08:18 AM   #12
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Quote:
Originally Posted by alank View Post
I have two thoughts for you o consider.

First, the temperature sensor for the bedroom may be in a warmer area than the sensor for the front area. That would require a higher setting for the bedroom thermostat than you need for the front area to maintain a temperature that feels the same.

Second, as for the box, I would have made a small duct between the front of the heater to the grill so all the heated air has to go out the grill. It appears that a lot of the heated air can just go around the sides (3/4" framework setback) to the back of the heater and blow through again.
I don't see any grill for cold air access to the back of the heater. If cold air can't get to the back of the heater, there won't be much coming out the front. I think your new box will just add additional restrictions the the air movement.

I might change my thoughts some if you had a picture of the front door closed. It could be the whole door front is a grill and cold air intake is to the outer sides of the door and the warmed air is to come out the center of the door.
There is about 1/8 inch or less gap between the foam board and the front grill. I can't take a picture of the inside with the grill attached. No bigger than the fan is on the back side of the radiator there is ample space to draw air for it, that's why I made the box larger than just the radiator. I agree about setting the thermostat to a higher setting than the front. Basically I just wanted the heat to go to the area it was intended for.
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