Seasons 4 Wiki - User contributions [en]

FAQ

2025-05-01T18:40:00Z

Victorhuffman:

5/1/2025-CCB

Q: How did we come up with all of the stub/header sizes for all of the stock heat reclaim coils?

A: We used this chart:

[[File:HR COIL STUB SIZES.PNG|RTENOTITLE]]

----

9/3/2021-CCB

Q: What size should the return blower be for a unit with economizer? (assumed from email subject matter)

A: As a reminder, we want to try and select a larger diameter return air blower when possible. I will typically try to make the return air blower the same diameter or one wheel size larger than the supply air blower as a rule of thumb. In general, we want to keep the RPM down to mitigate any sound concerns. With the direct drive, we are typically selecting in the 1,000 to 1,200 RPM range so that we can use a nominal 1200 RPM motor. We want to avoid the use of 1800 RPM motors (for sound), and we also want to avoid the 900 RPM motors due to cost and lead time.

When given the choice, a belt driven plenum usually affords more options for selection. Keep in mind, HOWEVER, that Greenheck does NOT offer a belt driven vertical plenum blower.

Please let me know if you have any questions.

Thanks,

Clay

----

7/19/2021-VTH

Q: Was asked about the max condenser coil height in 101" tall cabinet with 6" base.

A: You might be able to go with slightly more in certain occurrences, but these are numbers that won't fail you:

Base height =  6” : Unit height – 15” = Max condenser coil height

Base height =  8” : Unit height – 17” = Max condenser coil height

Base height =10” : Unit height – 19” = Max condenser coil height

Ex. 6” base Unit height =101”-15” = 86” of coil, 68.8 - 3/8” tubes, 114.66 - 5mm tubes

----

6/28/2021-VTH

Q: Was asked about opposed blade and parallel blade dampers and when to use each.

A: S-4 standard control damper uses opposed blades and we should only use parallel blade dampers when required by customer/sales department. Below talks about the difference. Generally we need to leakage to be as low as possible and the opposed blades are better for this.

[https://newsstand.mcdlg-hvac.com/parallel-or-opposed-blade-orientation https://newsstand.mcdlg-hvac.com/parallel-or-opposed-blade-orientation]

''The Difference Between Parallel and Opposed''

''While the results may look the same, these two blade orientations have trade offs that make them better suited for certain applications. When opening and closing, parallel blades minimize pressure drop through the damper’s blades. This makes parallel blades the best orientation for maintaining air flow.''

''In opposed orientation, the movement of the opposing blades can increase pressure drop while opening and closing. This can put undue strain on your HVAC system every time the damper operates. Parallel blade orientation is best for directing airflow in quick bursts.''

''While they may affect airflow, opposed blades do serve an important role in your HVAC system. The opposed blade action can modulate airflow and provide more torque to the blades while in the closed position. Tighter seals between each blade will minimize air leakage in the process. Opposed blade orientation is best for modulating airflow at different points in the duct.''

----

6/11/2021-VTH

Q: Was asked a question about Surface Treatment dropdown in the condenser tab of the ERP being "ELECTROFIN" instead of the defualt "None" and if it did anything to the weight or performance of the condenser coils. 

A: Changing the dropdown to ELECTROFIN does not change performance or weight. It actually doesn't change anything and I would recommend not changing it from the default None.

File:HR COIL STUB SIZES.PNG

2025-05-01T18:34:03Z

Victorhuffman:

FAQ

2025-05-01T18:32:44Z

Victorhuffman:

5/1/2025-CCB

Q: How did we come up with all of the stub/header sizes for all of the stock heat reclaim coils?

A: We used this chart:

----

9/3/2021-CCB

Q: What size should the return blower be for a unit with economizer? (assumed from email subject matter)

A: As a reminder, we want to try and select a larger diameter return air blower when possible. I will typically try to make the return air blower the same diameter or one wheel size larger than the supply air blower as a rule of thumb. In general, we want to keep the RPM down to mitigate any sound concerns. With the direct drive, we are typically selecting in the 1,000 to 1,200 RPM range so that we can use a nominal 1200 RPM motor. We want to avoid the use of 1800 RPM motors (for sound), and we also want to avoid the 900 RPM motors due to cost and lead time.

When given the choice, a belt driven plenum usually affords more options for selection. Keep in mind, HOWEVER, that Greenheck does NOT offer a belt driven vertical plenum blower.

Please let me know if you have any questions.

Thanks,

Clay

----

7/19/2021-VTH

Q: Was asked about the max condenser coil height in 101" tall cabinet with 6" base.

A: You might be able to go with slightly more in certain occurrences, but these are numbers that won't fail you:

Base height =  6” : Unit height – 15” = Max condenser coil height

Base height =  8” : Unit height – 17” = Max condenser coil height

Base height =10” : Unit height – 19” = Max condenser coil height

Ex. 6” base Unit height =101”-15” = 86” of coil, 68.8 - 3/8” tubes, 114.66 - 5mm tubes

----

6/28/2021-VTH

Q: Was asked about opposed blade and parallel blade dampers and when to use each.

A: S-4 standard control damper uses opposed blades and we should only use parallel blade dampers when required by customer/sales department. Below talks about the difference. Generally we need to leakage to be as low as possible and the opposed blades are better for this.

[https://newsstand.mcdlg-hvac.com/parallel-or-opposed-blade-orientation https://newsstand.mcdlg-hvac.com/parallel-or-opposed-blade-orientation]

''The Difference Between Parallel and Opposed''

''While the results may look the same, these two blade orientations have trade offs that make them better suited for certain applications. When opening and closing, parallel blades minimize pressure drop through the damper’s blades. This makes parallel blades the best orientation for maintaining air flow.''

''In opposed orientation, the movement of the opposing blades can increase pressure drop while opening and closing. This can put undue strain on your HVAC system every time the damper operates. Parallel blade orientation is best for directing airflow in quick bursts.''

''While they may affect airflow, opposed blades do serve an important role in your HVAC system. The opposed blade action can modulate airflow and provide more torque to the blades while in the closed position. Tighter seals between each blade will minimize air leakage in the process. Opposed blade orientation is best for modulating airflow at different points in the duct.''

----

6/11/2021-VTH

Q: Was asked a question about Surface Treatment dropdown in the condenser tab of the ERP being "ELECTROFIN" instead of the defualt "None" and if it did anything to the weight or performance of the condenser coils. 

A: Changing the dropdown to ELECTROFIN does not change performance or weight. It actually doesn't change anything and I would recommend not changing it from the default None.

Engineering

2025-05-01T18:26:23Z

Victorhuffman:

'''Welcome to the Seasons-4 Engineering wiki page.'''

 

Click here to see the [[Engineering_Procedures|Engineering Procedures]].  

 

Engineering Topics

[[Accumulators_in_Supermarket_Equipment|Accumulators in Supermarket Equipment]]

[[Door_Switches|Door Switches]]

[[Ebtron_Airflow_Monitor_Station|Ebtron Airflow Monitor Station (AFMS)]]

[[Greenheck_Blower_Options|Greenheck Blower Options]]

[[Humidifier_and_Steam_Piping|Humidifier and Steam Piping]]

[[Refrigerant_Pipe_Velocity_and_Oil_Return|Refrigerant Pipe Velocity and Oil Return]]

[[Special_Engineering_Document_Intent|Special Engineering Document Intent]]

[[Sporlan_MTW_Valve|Sporlan MTW Valve]]

[[VFD_Compressor_Minimum_Speeds|VFD Compressor Minimum Speeds]]

[[VFD_Compressors_with_Electronic_Expansion_Valves|VFD Compressors with Electronic Expansion Valves]]

 

Engineering Tools and Applications

[[Psychrometric_Chart|Psychrometric Chart]]

 

Program Info

[[ERP_Setup_and_Login|ERP Setup and Login]]

[[Coil_Database_Info|Coil Database Info]]

[[PE_Schedule_Guidelines|PE Schedule Guidelines]]

 

General Info

[[Factory_Order_Status_Codes|Factory Order Status Codes]]

 

FAQ

[https://wiki.seasons4.net/mediawiki/index.php?title=FAQ FAQ]

''Site under construction.  More to come in the very near future!''

''[[File:Coming Soon.jpg|left|x120px|Coming Soon.jpg]]''

 

 

 

 

 

[[Category:Engineering]]

Greenheck Blower Options

2022-05-09T19:32:04Z

Victorhuffman:

Return to [[Engineering|Engineering Main Menu]]
Greenheck Plenum Blower Options

Updated 05/09/22

Greenheck DOES make the following:

*Arr. 3 (belt drive) horizontal plenum blowers

*Arr. 4 (direct drive) horizontal plenum blowers

*Housed Arr. 4 (direct drive) horizontal (FAN CELL) plenum blowers

*Arr. 4 (direct drive) vertical plenum blowers (up to 40" Class I and II)

*All aluminum Arr. 4 (direct drive) horizontal plenum blowers (up to 33" Class I and II and up to 20 HP motor)

 

Greenheck DOES '''NOT''' make:

*Arr. 3 (belt drive) vertical plenum blowers

*All aluminum plenum blowers that are:
**Vertical Arr. 4
**Belt drive (horizontal or vertical)
**Class III
**> 33" wheel size
**> 20 HP (1200 RPM)

 

Email from Clay Brown to Engineering on 10/21/16 

'''Subject:''' Greenheck Blowers

Just want to remind you that we want to use Greenheck blowers as much as possible in lieu of Twin City. We have had a number of bearing failures this year with TCF, they have had issues building fans correctly, and the customer service has not been great. That being said, we must strive to maintain a working relationship with TCF because we still rely on them for aluminum construction blowers and vertical belt driven plenum blowers. Not to mention that we are seeing cost and labor savings with the Greenheck APH belt drive assemblies.

 

<s>As of November, 2016</s>,

<s>Updated 6/17/21,</s>

<del>''Greenheck blower list moved to top of wiki page (9/23/21, TDM)''</del>

''Added vertical DD size limitation (VTH,5/9/2022)''

 

----

Email from Clay Brown to Engineering on 4/24/20 

'''Subject:''' Aluminum Construction for Blowers

 

Please note that the options that state “FAN TO BE ALUMINUM CONSTRUCTION (option #23016, #23026)” are intended to specify an ALL aluminum construction, meaning wheel , inlet cone and frame. Currently, Twin City and Comefri are the only suppliers that we have for all aluminum plenum blowers, and Comefri’s offering is only available up to 28” diameter. Twin City has had several late deliveries so we want to use them only when absolutely necessary. We are working with Comefri’s engineering to get their product added to the ERP, but at the moment you have to use the manual option in the ERP.

Greenheck’s APH does have an aluminum wheel, and an aluminum inlet cone is available (standard is steel). There is an option in Pro-5 for aluminum wheel (option #23051), so if only an aluminum wheel if required, we can use Greenheck.

When all aluminum construction is requested for weight reduction, we need to pursue other options an use the all aluminum blower as a last resort. The all aluminum construction in addition to the lead time concerns is quite expensive. Our goal should be to minimize the use of all aluminum construction blowers as much as possible. Sales will continue to request all aluminum construction for “extreme coastal” units.

If we have preliminary design that become factory orders with the Twin City blowers, we need to try and change these blowers to Greenheck or Comefri. In many cases, we have been able to change from TCF all aluminum to Greenheck and make some adjustments to the weight to keep the same weight from the submittal.

Please let me know if you have one of these designs, and I will work with you to see what we can do. If we do determine that TC is our only option, then we will need to release the blowers as early as we can to help with lead time.

As a reminder, Greenheck does NOT manufacture a BELT drive VERTICAL plenum blower (Direct Drive only).

 

[[Category:Engineering]]

Greenheck Blower Options

2022-05-09T19:29:42Z

Victorhuffman:

Return to [[Engineering|Engineering Main Menu]]
Greenheck Plenum Blower Options

Updated 05/09/22

Greenheck DOES make the following:

*Arr. 3 (belt drive) horizontal plenum blowers

*Arr. 4 (direct drive) horizontal plenum blowers

*Housed Arr. 4 (direct drive) horizontal (FAN CELL) plenum blowers

*Arr. 4 (direct drive) vertical plenum blowers (up to 40" Class I and II)

*All aluminum Arr. 4 (direct drive) horizontal plenum blowers (up to 33" Class I and II and up to 20 HP motor)

 

Greenheck DOES '''NOT''' make:

*Arr. 3 (belt drive) vertical plenum blowers

*All aluminum plenum blowers that are:
**Vertical Arr. 4
**Belt drive (horizontal or vertical)
**Class III
**> 33" wheel size
**> 20 HP (1200 RPM)

 

Email from Clay Brown to Engineering on 10/21/16 

'''Subject:''' Greenheck Blowers

Just want to remind you that we want to use Greenheck blowers as much as possible in lieu of Twin City. We have had a number of bearing failures this year with TCF, they have had issues building fans correctly, and the customer service has not been great. That being said, we must strive to maintain a working relationship with TCF because we still rely on them for aluminum construction blowers and vertical belt driven plenum blowers. Not to mention that we are seeing cost and labor savings with the Greenheck APH belt drive assemblies.

 

<s>As of November, 2016</s>,

<s>Updated 6/17/21,</s>

''Greenheck blower list moved to top of wiki page (9/23/21, TDM)''

 

----

Email from Clay Brown to Engineering on 4/24/20 

'''Subject:''' Aluminum Construction for Blowers

 

Please note that the options that state “FAN TO BE ALUMINUM CONSTRUCTION (option #23016, #23026)” are intended to specify an ALL aluminum construction, meaning wheel , inlet cone and frame. Currently, Twin City and Comefri are the only suppliers that we have for all aluminum plenum blowers, and Comefri’s offering is only available up to 28” diameter. Twin City has had several late deliveries so we want to use them only when absolutely necessary. We are working with Comefri’s engineering to get their product added to the ERP, but at the moment you have to use the manual option in the ERP.

Greenheck’s APH does have an aluminum wheel, and an aluminum inlet cone is available (standard is steel). There is an option in Pro-5 for aluminum wheel (option #23051), so if only an aluminum wheel if required, we can use Greenheck.

When all aluminum construction is requested for weight reduction, we need to pursue other options an use the all aluminum blower as a last resort. The all aluminum construction in addition to the lead time concerns is quite expensive. Our goal should be to minimize the use of all aluminum construction blowers as much as possible. Sales will continue to request all aluminum construction for “extreme coastal” units.

If we have preliminary design that become factory orders with the Twin City blowers, we need to try and change these blowers to Greenheck or Comefri. In many cases, we have been able to change from TCF all aluminum to Greenheck and make some adjustments to the weight to keep the same weight from the submittal.

Please let me know if you have one of these designs, and I will work with you to see what we can do. If we do determine that TC is our only option, then we will need to release the blowers as early as we can to help with lead time.

As a reminder, Greenheck does NOT manufacture a BELT drive VERTICAL plenum blower (Direct Drive only).

 

[[Category:Engineering]]

FAQ

2021-09-03T12:25:55Z

Victorhuffman:

9/3/2021-CCB

Q: What size should the return blower be for a unit with economizer? (assumed from email subject matter)

A: As a reminder, we want to try and select a larger diameter return air blower when possible. I will typically try to make the return air blower the same diameter or one wheel size larger than the supply air blower as a rule of thumb. In general, we want to keep the RPM down to mitigate any sound concerns. With the direct drive, we are typically selecting in the 1,000 to 1,200 RPM range so that we can use a nominal 1200 RPM motor. We want to avoid the use of 1800 RPM motors (for sound), and we also want to avoid the 900 RPM motors due to cost and lead time.

When given the choice, a belt driven plenum usually affords more options for selection. Keep in mind, HOWEVER, that Greenheck does NOT offer a belt driven vertical plenum blower.

Please let me know if you have any questions.

Thanks,

Clay

----

7/19/2021-VTH

Q: Was asked about the max condenser coil height in 101" tall cabinet with 6" base.

A: You might be able to go with slightly more in certain occurrences, but these are numbers that won't fail you:

Base height =  6” : Unit height – 15” = Max condenser coil height

Base height =  8” : Unit height – 17” = Max condenser coil height

Base height =10” : Unit height – 19” = Max condenser coil height

Ex. 6” base Unit height =101”-15” = 86” of coil, 68.8 - 3/8” tubes, 114.66 - 5mm tubes

----

6/28/2021-VTH

Q: Was asked about opposed blade and parallel blade dampers and when to use each.

A: S-4 standard control damper uses opposed blades and we should only use parallel blade dampers when required by customer/sales department. Below talks about the difference. Generally we need to leakage to be as low as possible and the opposed blades are better for this.

[https://newsstand.mcdlg-hvac.com/parallel-or-opposed-blade-orientation https://newsstand.mcdlg-hvac.com/parallel-or-opposed-blade-orientation]

''The Difference Between Parallel and Opposed''

''While the results may look the same, these two blade orientations have trade offs that make them better suited for certain applications. When opening and closing, parallel blades minimize pressure drop through the damper’s blades. This makes parallel blades the best orientation for maintaining air flow.''

''In opposed orientation, the movement of the opposing blades can increase pressure drop while opening and closing. This can put undue strain on your HVAC system every time the damper operates. Parallel blade orientation is best for directing airflow in quick bursts.''

''While they may affect airflow, opposed blades do serve an important role in your HVAC system. The opposed blade action can modulate airflow and provide more torque to the blades while in the closed position. Tighter seals between each blade will minimize air leakage in the process. Opposed blade orientation is best for modulating airflow at different points in the duct.''

----

6/11/2021-VTH

Q: Was asked a question about Surface Treatment dropdown in the condenser tab of the ERP being "ELECTROFIN" instead of the defualt "None" and if it did anything to the weight or performance of the condenser coils. 

A: Changing the dropdown to ELECTROFIN does not change performance or weight. It actually doesn't change anything and I would recommend not changing it from the default None.

FAQ

2021-07-19T20:40:07Z

Victorhuffman:

7/19/2021-VTH

Q: Was asked about the max condenser coil height in 101" tall cabinet with 6" base.

A: You might be able to go with slightly more in certain occurrences, but these are numbers that won't fail you:

Base height =  6” : Unit height – 15” = Max condenser coil height

Base height =  8” : Unit height – 17” = Max condenser coil height

Base height =10” : Unit height – 19” = Max condenser coil height

Ex. 6” base Unit height =101”-15” = 86” of coil, 68.8 - 3/8” tubes, 114.66 - 5mm tubes

6/28/2021-VTH

Q: Was asked about opposed blade and parallel blade dampers and when to use each.

A: S-4 standard control damper uses opposed blades and we should only use parallel blade dampers when required by customer/sales department. Below talks about the difference. Generally we need to leakage to be as low as possible and the opposed blades are better for this.

[https://newsstand.mcdlg-hvac.com/parallel-or-opposed-blade-orientation https://newsstand.mcdlg-hvac.com/parallel-or-opposed-blade-orientation]

''The Difference Between Parallel and Opposed''

''While the results may look the same, these two blade orientations have trade offs that make them better suited for certain applications. When opening and closing, parallel blades minimize pressure drop through the damper’s blades. This makes parallel blades the best orientation for maintaining air flow.''

''In opposed orientation, the movement of the opposing blades can increase pressure drop while opening and closing. This can put undue strain on your HVAC system every time the damper operates. Parallel blade orientation is best for directing airflow in quick bursts.''

''While they may affect airflow, opposed blades do serve an important role in your HVAC system. The opposed blade action can modulate airflow and provide more torque to the blades while in the closed position. Tighter seals between each blade will minimize air leakage in the process. Opposed blade orientation is best for modulating airflow at different points in the duct.''

6/11/2021-VTH

Q: Was asked a question about Surface Treatment dropdown in the condenser tab of the ERP being "ELECTROFIN" instead of the defualt "None" and if it did anything to the weight or performance of the condenser coils. 

A: Changing the dropdown to ELECTROFIN does not change performance or weight. It actually doesn't change anything and I would recommend not changing it from the default None.

FAQ

2021-07-19T20:39:16Z

Victorhuffman:

7/19/2021-VTH

Q: Was asked about the max condenser coil height in 101" tall cabinet with 6" base.

A: You might be able to go with slightly more in certain occurrences, but these are numbers that wont fail you:

Base height =  6” : Unit height – 15” = Max condenser coil height

Base height =  8” : Unit height – 17” = Max condenser coil height

Base height =10” : Unit height – 19” = Max condenser coil height

Ex. 6” base  Unit height =101”-15” = 86” of coil, 68.8 - 3/8” tubes, 114.66 - 5mm tubes

6/28/2021-VTH

Q: Was asked about opposed blade and parallel blade dampers and when to use each.

A: S-4 standard control damper uses opposed blades and we should only use parallel blade dampers when required by customer/sales department. Below talks about the difference. Generally we need to leakage to be as low as possible and the opposed blades are better for this.

[https://newsstand.mcdlg-hvac.com/parallel-or-opposed-blade-orientation https://newsstand.mcdlg-hvac.com/parallel-or-opposed-blade-orientation]

''The Difference Between Parallel and Opposed''

''While the results may look the same, these two blade orientations have trade offs that make them better suited for certain applications. When opening and closing, parallel blades minimize pressure drop through the damper’s blades. This makes parallel blades the best orientation for maintaining air flow.''

''In opposed orientation, the movement of the opposing blades can increase pressure drop while opening and closing. This can put undue strain on your HVAC system every time the damper operates. Parallel blade orientation is best for directing airflow in quick bursts.''

''While they may affect airflow, opposed blades do serve an important role in your HVAC system. The opposed blade action can modulate airflow and provide more torque to the blades while in the closed position. Tighter seals between each blade will minimize air leakage in the process. Opposed blade orientation is best for modulating airflow at different points in the duct.''

6/11/2021-VTH

Q: Was asked a question about Surface Treatment dropdown in the condenser tab of the ERP being "ELECTROFIN" instead of the defualt "None" and if it did anything to the weight or performance of the condenser coils. 

A: Changing the dropdown to ELECTROFIN does not change performance or weight. It actually doesn't change anything and I would recommend not changing it from the default None.

FAQ

2021-06-28T17:30:33Z

Victorhuffman:

6/28/2021-VTH

Q: Was asked about opposed blade and parallel blade dampers and when to use each.

A: S-4 standard control damper uses opposed blades and we should only use parallel blade dampers when required by customer/sales department. Below talks about the difference. Generally we need to leakage to be as low as possible and the opposed blades are better for this.

[https://newsstand.mcdlg-hvac.com/parallel-or-opposed-blade-orientation https://newsstand.mcdlg-hvac.com/parallel-or-opposed-blade-orientation]

''The Difference Between Parallel and Opposed''

''While the results may look the same, these two blade orientations have trade offs that make them better suited for certain applications. When opening and closing, parallel blades minimize pressure drop through the damper’s blades. This makes parallel blades the best orientation for maintaining air flow.''

''In opposed orientation, the movement of the opposing blades can increase pressure drop while opening and closing. This can put undue strain on your HVAC system every time the damper operates. Parallel blade orientation is best for directing airflow in quick bursts.''

''While they may affect airflow, opposed blades do serve an important role in your HVAC system. The opposed blade action can modulate airflow and provide more torque to the blades while in the closed position. Tighter seals between each blade will minimize air leakage in the process. Opposed blade orientation is best for modulating airflow at different points in the duct.''

6/11/2021-VTH

Q: Was asked a question about Surface Treatment dropdown in the condenser tab of the ERP being "ELECTROFIN" instead of the defualt "None" and if it did anything to the weight or performance of the condenser coils. 

A: Changing the dropdown to ELECTROFIN does not change performance or weight. It actually doesn't change anything and I would recommend not changing it from the default None.

FAQ

2021-06-11T20:49:29Z

Victorhuffman: Created page with " 6/11/2021-VTH Q: Was asked a question about Surface Treatment dropdown in the condenser tab of the ERP being "ELECTROFIN" instead of the defualt "None" and if it did anythin..."

6/11/2021-VTH

Q: Was asked a question about Surface Treatment dropdown in the condenser tab of the ERP being "ELECTROFIN" instead of the defualt "None" and if it did anything to the weight or performance of the condenser coils. 

A: Changing the dropdown to ELECTROFIN does not change performance or weight. It actually doesn't change anything and I would recommend not changing it from the default None.

Engineering

2021-06-11T20:40:12Z

Victorhuffman:

Engineering

2021-06-11T20:32:59Z

Victorhuffman: