Podręcznik projektowy i techniczny Honeywell 3 144 jest kompleksowym narzędziem, które pozwala na wykonywanie szczegółowych projektów i testów dotyczących systemów bezpieczeństwa, zarządzania energią i sieci. Podręcznik zawiera informacje o obiektach, wymaganych konfiguracjach, funkcjach i protokołach, które są niezbędne do zaprojektowania i zbudowania systemu. Podręcznik szczegółowo opisuje proces tworzenia systemu, od projektowania i konfiguracji po wdrażanie i monitorowanie działania systemu. Podręcznik jest również wyposażony w szereg narzędzi, które pomagają w tworzeniu i utrzymywaniu systemu, a także w uzyskiwaniu dostępu do zasobów sieciowych. Podręcznik jest przydatnym narzędziem, które pomoże Ci w tworzeniu i utrzymywaniu najwyższej jakości systemów bezpieczeństwa, zarządzania energią i sieci.
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Using that diode and those resistors to keep the motor in a reduced, half wave voltage stall tuned to exactly counteract the spring force, is sheer brilliance!
In the Netherlands, most of the homes have a single unit that does both the heating and hot water. Usually, hot tap water is not stored in tanks, but is produced on the fly.
I’m in the US and we have something similar here but they are not common for residential use we mostly use natural gas or electric for hot water and forced air heating or a boiler with radiators that is separate
As of lately, the quick test and hoppi meter have been both used rather frequently. in most recent videos so far. It's interesting really to see so many appearances of the two devices working together.
In our system, the three way valve and the boiler thermostat both link directly into the furnace connection blocks, as does the outside temperature sensor and the room unit (behind a Bosch proprietary protocol). Things like boiler thermals and power level settings are all on the furnace lcd display.
Honeywell has some very clever stuff. When we installed a new heat pump, the manufacturer called for an 8-wire thermostat connection. In our home, all the wire is buried behind walls and replacing our 7-wire cable would have been a real job, given the wire path between floors. No matter--the installer turned to a 2-wire thermostat that talks to a controller down on the heat pump. Has all sorts of options; multiple temperature sensors and WiFi--all over 2 wires.
I was always interested in how such motorised valves worked. China sells a lot of those hvac damper actuators, they will probably work the same way
This is probably one the best video's I've seen on YouTube ; thank you for taking the time to explain
Clive, you've saved the day again. I discovered your channel when attempting to diagnose a faulty cooker clock/timer, turned out to be a dry solder joint, one of your vids helped me find and fix it, and now you've helped me with my non-existent hot water! I thought I'd have to replace the whole valve, but I can do just the motor and JB?! And lo, there was again hot water! Much appreciated! What will you get me fixing next?!
And while I'm at it, My all time favourite video of yours is probably the automatic washroom siphon. Absolutely wonderful explanation that one!
The heating system you are describing sounds quite complex. In The Netherlands we normally just have one integrated gas-powered kettle that you simply connect to the radiators, hot water taps and thermostat (which is just a user control panel, all smarts are inside the kettle). These days it even contains the pump.
Another oddity I've noticed with these mid position valves - they only seem to fail on a Sunday evening, just after toolstation and screwfix have closed. I've got to be in work early in the morning, and will be away for a few days. So the boss is left without heating or hot water until I get back. Ought to start keeping spares on the shelf!
You didn’t mention the key characteristic of synchronous motors, that the approach relies on. This is that the motor ‘freezes ‘ when DC is applied. Even the half wave DC from the single diode is enough to stop the motor and resist the return spring force. Very neat and simple :)
Funnily enough I just changed one for my dad a couple of days ago, his was a honeywell but it looked nothing like that one inside. Bought a Corgi version instead at half the price and it was identical to the honeywell I removed.
That's clever, putting some Dc on the synchronous motor to hold it mid position.
Nice units but I like to think it's important to fully understand the wiring of central heating systems before installing them, even when using wiring centres like these. They are after all really quite simple. A good understanding of the wiring and how the components work also makes fault finding much faster and easier. I'm always surprised how many electricians and plumbers are baffled by 3 port mid-position valves and have no idea they operate!
"Sector gear" is what I've usually heard those called. You see them in dial test indicators. That particular one could possibly be operating by running the sector gear to its end and then just letting it click against the pinion. That would be much preferable to stalling the motor.
My house has one of the early 80's honeywell boxes where everything is Rammed in there and screwed shut. Quite tempted to get one of these and re-do it myself to make it neat and tidy.
That link box is beautiful design. If the designer happens to discover this vid and then the comments, kudos, nice bit of engineering design mate.
Very interesting to see the workings of the valve. I got a roll of orange electrical tape with my last JLC order.
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