Question or Comment: I have 2 older Marine Air Systems Heat/AC units. Models C16H and CSM12K. I was wondering if the FX-2 kit would be compatible with my units. I "think" both of them go back to a single motherboard then split off to each 3-knob controller.
1. are the units compatible
2. do i need 2 control units or just one "brain" and 2 separate control panels?
3. are these forward compatible, meaning, can I use these on the newer "all-in-one units"?
Any additional suggestions or info would be greatly appreciated.
Hi Scott, and thank you for your inquiry.
The FX2 will indeed work with your older Marine Air units, but for your systems the FX1 would be more appropriate. The FX1 has all the features of the FX2 other than some add-on capability which wouldn't be suitable for your systems. We have a specific wiring guide for Marine Air in the FX1 Manual, and it is the easiest manufacturer to convert.
In simple terms, you will need to cut the cable to each existing three-knob control and divert those wires into the FX1 Power Module. The Power Module gets hidden away somewhere, as long it is located where the cable from the old control can be diverted into it. We will tell you what color wire goes where, and you won't to have any knowledge as to what wire does what. You will not have to access any wiring on the actual air cond units. The plug-in Display cable is run from the Power Module to wherever the FX1 Display is mounted. You will need one complete kit for each system.
Your last photo shows a Pump Relay, which switches on the water pump when either unit's compressor is running. This will remain unchanged.
FX1 controls will work with any air conditioning system, and as long as you can provide a schematic diagram we can advise on wiring.
I trust that this answers your questions sufficiently, but please don't hesitate to get back to us for more information or if you are ready to place an order.
Good morning and thank you for the quick reply and detailed info. Thanks for letting me know about the FX1 vs FX2. Going forward if I were to upgrade my heat/AC with something like the unit in the link below, would it be more appropriate to have the FX2? Also, I thought that I read the FX1 does NOT support WiFi only the FX2?
Originally, the FX-1 did not support Wi-Fi, but the current generation FX-1 does.
If you were to buy the unit you refer to, you'd probably be better off using the FX-1 control on it. However, you'd be much better off buying a MarinAire unit. This is much better unit, at a very good price, and comes with a very good control plus remote. You can also purchase a third-party Wi-Fi device for the MarinAire units, if that is a priority. https://www.coastalclimatecontrol.co...ditioning.html
Keep in mind that both the MarinAire and the Defender models are Compact or Self Contained models, with everything on one base pan. Your existing systems are Split units, with the compressor in one place and the blowers remotely located, so they will not be drop-in replacements.