Need help with Bryant Evolution system

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Old 01-24-18, 07:41 PM
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Need help with Bryant Evolution system

We had a 2 ton Evolution system installed late last summer, I'm trying to understand the heating aspect as I know it's a completely different setup than my old R22 system.

We don't have the extreme series, but the 288. My question is, when it's called to heat, with the house set at 71, what temp should I see coming off the indoor coil? Does it vary greatly or does it produce 90+ deg heat then ramp up with higher fan speeds if it cannot satisfy the stat?

Reason I ask, is I have 76 deg coming from the indoor coil with the inside temp at 70....in stage 2 heating....35 deg ambient.

Seems like it has to work hard for maintaining 71 and the home is well insulated with very good windows.
 
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Old 01-25-18, 07:32 PM
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So basically if I have 6 deg delta across the indoor coil in heat, is this not uncommon with the scroll compressors in the evolution system? I have a 5 stage outdoor and a variable indoor.

In stage 4 heat, I have 14 deg delta, 36 deg ambient.
 
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Old 01-25-18, 08:05 PM
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No, 6 degrees is a poor reading.

Are you measuring this delta tee at the air handler or are you including the duct work in this test by measuring at grills?
 
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Old 01-25-18, 08:17 PM
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The system is currently in stage 4 heat. I removed the filter and I have 68 deg just under the coil, and 81.5 deg about 2' above the coil...accessed through the humidifier.

Air handler- FE4ANF002L00EBAA
Outdoor unit- 288BNV024B00
 

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Old 01-25-18, 08:33 PM
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Is the humidifier running during this test?

13.5 degrees . What is your outdoor temperature this evening?
 
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Old 01-25-18, 08:42 PM
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Humidifier is not running, outdoor temp is 36 deg f.
 
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Old 01-25-18, 09:06 PM
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That sounds like good performance for a heat pump at 36 degrees to me.


What is the CFM output in stage 4?
What is the CFM output in stage 5?
 
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Old 01-25-18, 09:13 PM
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Now it's in stage 5, temp above coil has dropped to 74.5 deg and blower is currently 825 CFM according to the Connex controller.

My previous 18YO R22 Lennox would put out 88 deg @20' from the coil on a 35 deg day. This new Puron/410a must not be setup correctly.
 
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Old 01-25-18, 10:13 PM
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You are running over 400 CFM per ton.
This can be adjusted from your Evolution user interface.
 
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