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#41
Sunderland England
9,204 Posts
Joined Dec 2016
Originally posted by davecttr
At least 40 degrees Celsius which is hot, not 40 degrees Fahrewotsit which I can't remember anymore
We still use Fahrenheit up north lol.
#42
United States
3,147 Posts
Joined Jul 2014
Originally posted by navybankerteacher
No, the AC system will then work to bring the temperature up to 70. Then, aside from temperature control (which works in both directions), the ventilation effect (keeping internal air pressure slightly above that outside) will also be impacted.

But, do not trust us -read the instructions which most likely are on, or next to, your balcony door; or check with the shipboard guest services people when on board.
Not with most systems.

1) An AC system may be cooling only. So no capacity to heat.

2). Many systems require you to manually set heating or cooling. This is to avoid the system bouncing between heating and cooling and fighting itself.

3) Many systems are either only heating or cooling depending on the season. Only cooling during hot weather and only heating during cold weather
#43
South Carolina
359 Posts
Joined Dec 2011
Originally posted by LA_CA_GAL
If it is 40 degrees outside, how will leaving the balcony door open affect the AC system?

I can see it if it is 100 degrees outside.

Maybe I just lack common sense?
No. You don't lack common sense . You are just ignorant about this topic.
Air conditioning is a term that encompasses not just cooling but heating as well. If it is 40 outside, the AC system will be on but the brain of the system , the thermostat, will be calling for heat rather than cooling. Now you know.
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#44
United States
3,147 Posts
Joined Jul 2014
Originally posted by JMorris271
No. You don't lack common sense . You are just ignorant about this topic.
Air conditioning is a term that encompasses not just cooling but heating as well. If it is 40 outside, the AC system will be on but the brain of the system , the thermostat, will be calling for heat rather than cooling. Now you know.
No, the correct term is HVAC, Heating Ventilation and Cooling.

Air Conditioning typically means cooling only.

If you install and air conditioning system in your home, it will be cooling only. If you install a heat pump, you will get both heating and cooling.
#46
New Cumberland,PA, USA
30,487 Posts
Joined May 2000
Originally posted by SRF
No, the correct term is HVAC, Heating Ventilation and Cooling.

Air Conditioning typically means cooling only.

If you install and air conditioning system in your home, it will be cooling only. If you install a heat pump, you will get both heating and cooling.
You are obvious having fun being a troll on this issue. Accordingly, whatever you say is absolutely true

Hank
#47
Canada
1,629 Posts
Joined Jul 2013
It appears our Jedi Master was premature in assuming his work was done. The Dark Side hair splitters are still hard at work. Tell us Master - do the cabin thermostat controls have separate controls for heating and cooling, or is it simply done by setting the desired temperature? Help us Obi Wan, you are our only hope.
#48
Maine or at sea
13,729 Posts
Joined Feb 2013
Originally posted by mom says
It appears our Jedi Master was premature in assuming his work was done. The Dark Side hair splitters are still hard at work. Tell us Master - do the cabin thermostat controls have separate controls for heating and cooling, or is it simply done by setting the desired temperature? Help us Obi Wan, you are our only hope.
Again, two systems, two controls, though both controls will operate heating and cooling. The cabin thermostat controls, when set to a set point below the measured cabin temperature (cooling), controls when chilled water is allowed to flow through the heat exchanger to cool off the air. When the cabin thermostat is set to a temperature above the measured cabin temperature, the chilled water flow is stopped, and a small electric resistance heater is activated. But this system has nothing to do with the balcony door, other than on many ships it will be shut off for both cooling and heating when the door is open, remember this well.

The fresh air supply system uses a pre-set temperature setpoint, and when the air is too warm, it allows chilled water through the heat exchanger, and when too cold, it sends steam through another heat exchanger. Affected by the air imbalance set up by an open balcony door, this system is.
#49
South Carolina
359 Posts
Joined Dec 2011
Originally posted by SRF
No, the correct term is HVAC, Heating Ventilation and Cooling.

Air Conditioning typically means cooling only.

If you install and air conditioning system in your home, it will be cooling only. If you install a heat pump, you will get both heating and cooling.
And if you install a split system you are getting both heating and cooling. I almost typed in HVAC but was not expecting this clarification, I stand corrected.
Air Conditioning is a generalization when used to indicate cooling only.
Conditioning refers to making an area to a state that is comfortable.That is a zone where one can sense no heat or cool. Just comfort and that of course is subjective.eThermostats contain 2 switches in the same box. One for heating and one for cooling. If you want to call each switch a separate thermostat, I suppose you can.
Just because one cabin has its door opened does not affect other temperatures in rooms that have their own thermostat. I'm sure the company wants passengers to think that though.
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Holland America Konningsdam 14 day Norway's Fjords July 8-22, 2018
RCL Independence 12 Day Canary Islands 6/2017
MSC Davidina 8 Day Eastern Carib. 9/10/2016
Costa Diadema 7 Day Western Med. 5 /16,2016
NCL Pearl 10 Day Panama Canal Dec 21 ,2015
Celebrity Reflection...12 Day..Eastern Med. 6/15
Princess Coral...10 day Alaska Cruise/Tour 5/2014
Viking Danube... Heart of Europe....5/2012
Viking Sun ...... 14 Day River Cruise in China, 6/2005
Carnival Glory... 7 Day Western Carib,
NCL Majesty...... 7 Day Southern Carib,
Constitution........10 Day Trans Atlantic,
Carnival Fantasy...3 day.Bermuda
NCL ..Dawn. ....... Eastern Caribbean
Carnival Fantasy....Bermuda 8/10
Carnival Fantasy.....Eastern Caribbean
Carnival Pride....... Western Carib
Carnival Ecstasy... Western Carib 6/02
NCL Majesty..........Southern Carib 5/2001
NCL Sky.................Southern Carib
RCL.. Jewel of the Sea's...Southern Carib
Celebrity Millennium 15 day Japan 4/13/19
#50
Maine or at sea
13,729 Posts
Joined Feb 2013
Originally posted by JMorris271
And if you install a split system you are getting both heating and cooling. I almost typed in HVAC but was not expecting this clarification, I stand corrected.
Air Conditioning is a generalization when used to indicate cooling only.
Conditioning refers to making an area to a state that is comfortable.That is a zone where one can sense no heat or cool. Just comfort and that of course is subjective.eThermostats contain 2 switches in the same box. One for heating and one for cooling. If you want to call each switch a separate thermostat, I suppose you can.
Just because one cabin has its door opened does not affect other temperatures in rooms that have their own thermostat. I'm sure the company wants passengers to think that though.
Actually, you can get mini-split systems that are air conditioning (cooling) only, or that are heat pumps (heating and cooling). It all depends on what you pay for. The split refers to the separation between the evaporator (inside unit) and the compressor/condenser (outside unit), not a split between heating and cooling.

And all of my posts regarding leaving the balcony door open affecting other cabins (search for them, or look at the one linked earlier in the thread), explain how doing this actually does affect the temperature in other cabins. It is because unlike your mini-split AC system, there are two systems in each cabin. A "mini-split" (if you will) that is controlled by the thermostat, and a "central system" that supplies an entire bank of cabins, to use home system equivalents.
#51
Southern California by way of Kentucky
21,933 Posts
Joined Aug 2009
On the "so called" thermostats in the cabin....red arrows mean heat blue arrows mean cool....I usually set it in the middle...that's as technical as it needs to get
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#52
Sunderland England
9,204 Posts
Joined Dec 2016
Originally posted by Ashland
On the "so called" thermostats in the cabin....red arrows mean heat blue arrows mean cool....I usually set it in the middle...that's as technical as it needs to get
I set it to cold then my wife turns it to hot then I turn it back to cold then she turns it to hot lol
#53
United States
3,147 Posts
Joined Jul 2014
Originally posted by JMorris271
And if you install a split system you are getting both heating and cooling. I almost typed in HVAC but was not expecting this clarification, I stand corrected.
Air Conditioning is a generalization when used to indicate cooling only.
Conditioning refers to making an area to a state that is comfortable.That is a zone where one can sense no heat or cool. Just comfort and that of course is subjective.eThermostats contain 2 switches in the same box. One for heating and one for cooling. If you want to call each switch a separate thermostat, I suppose you can.
Just because one cabin has its door opened does not affect other temperatures in rooms that have their own thermostat. I'm sure the company wants passengers to think that though.
Most, but not all, split systems are also heat pumps. Split system refers to how the evaporator and condenser are arranged. And actually, most whole house units (versus window units) are split units. Although the term is typically used for the systems where the evaporator is wall mounted and conditions one room.

Even with the single thermostat housing, many units have a switch (manual or electronic) that switches from heating to cooling. it is not automatic.

As for your last sentence, you need to read the link in post 4.

Ship systems are two separate systems that run at the same time. One for just the room, and the second for a block of rooms (that also controls room pressurization). And leaving your balcony door open DOES affect other cabins.