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Safe to use fewer heads than an outdoor mini split unit supports?
I'm trying to select the right combination of parts for a new mini split system. I'll need 20-24K BTUs of cooling, but the layout of the building makes it difficult to install more than 2 heads indoors. For the brand I'm currently considering, there isn't a two-zone outdoor unit with enough BTUs, but there is a three-zone option (Pioneer YN030GMFI22M3D).
If I bought the 3-zone unit (24K BTUs) and had 2 indoor units (12K BTUs each) installed, could that work?
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What does your installer suggest doing?
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Originally Posted by
Telos
I'm trying to select the right combination of parts for a new mini split system. I'll need 20-24K BTUs of cooling, but the layout of the building makes it difficult to install more than 2 heads indoors. For the brand I'm currently considering, there isn't a two-zone outdoor unit with enough BTUs, but there is a three-zone option (Pioneer YN030GMFI22M3D).
If I bought the 3-zone unit (24K BTUs) and had 2 indoor units (12K BTUs each) installed, could that work?
For posterity, this was the reply from Pioneer:
Yes you can install the 3-zone unit which is 27,000 BTU with 2 of the 12,000 BTU units and leave the 3rd circuit closed. This will work fine with just 2 indoor units and you can always have a spare circuit available if desired later on.
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It appears you'll be buying the equipment online. That's cutting corners. Warranty for that often does not exist. Finding a qualified contractor willing to install it may be impossible. Getting an unqualified contractor (or DIY) has the potential for huge disappointment or disaster.
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https://www.hvac20.com/ High efficiency equipment alone does not provide home comfort and efficiency. HVAC2.0 is a process for finding the real needs of the house and the occupants. Offer the customer a menu of work to address their problems and give them a probability of success.
Find contractors with specialized training in combustion analysis, residential system performance, air flow, and duct optimization https://www.myhomecomfort.org/
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Originally Posted by
Telos
For posterity, this was the reply from Pioneer:
Yes you can install the 3-zone unit which is 27,000 BTU with 2 of the 12,000 BTU units and
leave the 3rd circuit closed.
This will work fine with just 2 indoor units and
you can always have a spare circuit available if desired later on.
_ SAFE, Reliable AND Expected Equipment Life
are probably NOT similar endpoints.
: Enter this SCHOOL-OF-HARD-KNOCKS to discover YOUR Ultimate Frustrations.
Designer Dan __ It's Not Rocket Science, But
It is SCIENCE with
Some Art. _ _
KEEP
IT
SIMPLE &
SINCERE ___ __
www.mysimplifiedhvac.com ___ __ Define the Building Envelope & Perform a Detailed Load Calc: It's ALL About Windows & Make-up Air Requirements. Know Your Equipment Capabilities
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PIONEER _ _ YN030GMFI22M3D
_______________ GMCC Rotary Compressor
___ https://www.pdhvac.com/site/downloads/YN-M22-2016.pdf
Where is the production of GMCC products located?
Parts distribution is through what entities?
What is the Warranty?
Designer Dan __ It's Not Rocket Science, But
It is SCIENCE with
Some Art. _ _
KEEP
IT
SIMPLE &
SINCERE ___ __
www.mysimplifiedhvac.com ___ __ Define the Building Envelope & Perform a Detailed Load Calc: It's ALL About Windows & Make-up Air Requirements. Know Your Equipment Capabilities
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Originally Posted by
kdean1
It appears you'll be buying the equipment online. That's cutting corners. Warranty for that often does not exist. Finding a qualified contractor willing to install it may be impossible. Getting an unqualified contractor (or DIY) has the potential for huge disappointment or disaster.
The warranty does exist: it's 5 years.
I've already talked to multiple licensed contractors who are perfectly willing to install factory-sealed equipment purchased by the owner.
If I had a little more time and a little less money, rolling the dice on "disaster" just might make sense. When the cost of labor exceeds the cost of the equipment, you have to understand why some people would take the risk.
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You're looking for a way to lower your cost. We have costs as well and that's why we charge for our time, our tools, our training, our vans, our insurance, our office, our taxes, etc...
The internet won't replace those things for you. If your contractor can't be found in 6 months or 1 month then he didn't make enough and you'll be left high and dry.
*********
https://www.hvac20.com/ High efficiency equipment alone does not provide home comfort and efficiency. HVAC2.0 is a process for finding the real needs of the house and the occupants. Offer the customer a menu of work to address their problems and give them a probability of success.
Find contractors with specialized training in combustion analysis, residential system performance, air flow, and duct optimization https://www.myhomecomfort.org/
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Originally Posted by
Telos
I'm trying to select the right combination of parts for a new mini split system.
I'll need 20-24K BTUs of cooling, but
the layout of the building makes it difficult to install more than 2 heads indoors.
For the brand I'm currently considering,
there isn't a two-zone outdoor unit with enough BTUs,
but there is a three-zone option (Pioneer YN030GMFI22M3D).
If I bought the 3-zone unit (24K BTUs) and had 2 indoor units (12K BTUs each) installed, could that work?
One 12,000 BTU/HR head in ~900 Sq feet should NEVER be AN ACCESS NOR SPACE CONCERN.
It may well be an air distribution issue.
Designer Dan __ It's Not Rocket Science, But
It is SCIENCE with
Some Art. _ _
KEEP
IT
SIMPLE &
SINCERE ___ __
www.mysimplifiedhvac.com ___ __ Define the Building Envelope & Perform a Detailed Load Calc: It's ALL About Windows & Make-up Air Requirements. Know Your Equipment Capabilities
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Originally Posted by
Telos
The warranty does exist: it's 5 years.
I've already talked to multiple licensed contractors who are perfectly willing to install factory-sealed equipment purchased by the owner.
If I had a little more time and a little less money, rolling the dice on "disaster" just might make sense. When the cost of labor exceeds the cost of the equipment, you have to understand why some people would take the risk.
The 5 year parts warranty exists but what kind of warranty support are you going to get out of the contractor that installs it? If you paid a contractor to purchase and install it you'd get at least a one year labor warranty and possibly an extended parts warranty if it's registered online. It's your house and if you can find a decent contractor to put it in, more power to you.