#4 in Furnace replacement relays
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Reddit mentions of YuCo YC-GP-DPDT-2 Power Relay 110/120V AC Coil 30Amp 2 Pole DPDT Heavy-Duty UL Listed RU
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Reddit mentions: 1
We found 1 Reddit mentions of YuCo YC-GP-DPDT-2 Power Relay 110/120V AC Coil 30Amp 2 Pole DPDT Heavy-Duty UL Listed RU. Here are the top ones.
or
- Yuco double pole double throw contacts general purpose relay
- 110/120V ac capacity 30 amp 250vac /28vdc 2no/2nc
- Contact form DPPT with plastic cover
- Clapper relay
- Electrical replacement part
Features:
Specs:
| Height | 2.5 Inches |
| Length | 3.36 Inches |
| Weight | 0.6875 Pounds |
| Width | 2.63 Inches |
Most timers will accumulate error, which will mean that your "6AM" will become 6:05, then 6:10 as the days/weeks/years pass. Would that be a problem?
If so, using the mains as a timing reference is one solution. The alternative is something that gets a time signal which corrects any drift.
The mains timing solution is pretty simple. You buy two plug in mains timer adapters. You may be able to buy those from your local dollar store. eg "DollarTree". They have a mains socket which is switched on and off by the adapter. You set the time and how long (eg by moving pegs).
Plug a 5A 12v output wallwart into one adapter and set it to switch the socket on at 6AM and off at 6:15, then on at 8PM and off at 8:15.
Buy a 120vac two pole change over relay. Wire the coil of that to a mains plug and and plug that into a second timer adapter. Set that timer to switch on once a day at 7:45PM and off again at 8:30.
Now, you run the output wires from the 12v output wallwart to the centre contacts of the relay. You connect the actuator wires to the "normally open" relay contacts. You take two wires from those contacts, swap them over and connect them to the remaining, "normally closed" relay contacts.
Job done. How it works is simple. When 6AM happens, the first timer switches the wallwart on, which supplies 12v to the actuator, via the relay normally closed contacts. At 6:15, the 12v switches off again.
In the evening, the second timer sends power to the relay coil. So the relay joins the centre contacts to the normally open ones. When the first time puts power on, a few minutes later, it goes direct to the actuator and not via the swapped over wires. So the actuator runs in the opposite direction. A few minutes later, the wall wart is switched off. A few minutes later, the relay is switched off.
I'll leave you to find the time switch adapters - relays like this https://www.amazon.com/YC-GP-DPDT-2-Power-Relay-Heavy-Duty-Listed/dp/B00SFYWO02/ref=sr_1_2?ie=UTF8&qid=1499093996&sr=8-2&keywords=120v+two+pole+relay
don't need soldering and have an insulated cover.