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We have an ancient cast iron radiator system with three
We have an ancient cast iron radiator system with three 2-pipe runs. One is far longer than the other two and serves twice the number of radiators including one very large one in the main hall. Becaus… read more
Rick
Rick
HVAC Supervisor
25,172 satisfied customers
I have a Taco SR 503 EXP Running 3 zones which includes the
I have a Taco SR 503 EXP Running 3 zones which includes the hot water and a SR501 running a basement hot water zone. I am using Nest thermostats on all three heating zones. All work fine except the ba… read more
Rick
Rick
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How do I wire the relay on my outside stove to make circ
How do I wire the relay on my outside Taylor stove to make circ pump come on … read more
Rick
Rick
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Can both zone pumps and zone valves be controlled by the
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HOW DO I CONNECT L4103A AQAUSTAT TO MY OIL BURNER L7224A
HOW DO I CONNECT L4103A AQAUSTAT TO MY OIL BURNER L7224A CONTROLLER ON MY BOILER. THIS IS FOR A STORAGE HOT WATER TANK. … read more
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Is it possible to connect a sr501-4 to a 503 exp-4 and if so
is it possible to connect a sr501-4 to a 503 exp-4 and if so do you connect to only the A & B terminal on the expansion slot or can you just wire the TT wires of each switching relay… read more
Rick
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Looking diagram using a Ribuic relay,a 3 wire taco zone
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With the help of an HVAC friend I recently installed a WM GGi-8.
With the help of an HVAC friend I recently installed a WM GGi-8. To date he hasn't heard back from WM as to appropriate wiring for use with an indirect water heater, domestic priority. There are separ… read more
Rick
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How do I wire another single zone switching relay to a existing
How do I wire another single zone switching relay to a existing six zone switching relay to make seven zones… read more
Rick
Rick
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I currently have a SR501 where it has a tankless water heater
I currently have a SR501 where it has a tankless water heater supplying a heat exchanger via a circulation pump and a circulation pump feeding zone 1 of a radiant floor. Both pumps are connected to a … read more
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I just installed a Burnham PV8H3, 109,000 BTU V8H Water Boiler
I just installed a Burnham PV8H3, 109,000 BTU V8H Water Boiler w/o Tankless Coil w/ Beckett Burner (Oil).. I hooked in my existing Burnham AL-40 water heater to this system. The problem I have is that… read more
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Is it possible to control a boiler consisting of (one burner
Is it possible to control a boiler consisting of (one burner Motor and two separately zoned circulator pumps) with two separate thermostats? Boiler has an L8148A Aquastat relay, and a standard relay t… read more
Rick
Rick
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I am installing a hydronic floor in a new sunroom. I have
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I replaced my smart controller on my Amtrol boilermate with
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I have a boiler with a L8124A, C, L8151A triple aquastat relay.
I have a boiler with a L8124A, C, L8151A triple aquastat relay. The boiler heats 2 different buildings, both hot water, not steam. My house t-stat is wired into the 8124A as is the circulator pump, ev… read more
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Hi, I have added a third zone off of my current boiler. The
Hi, I have added a third zone off of my current boiler. The third zone is radiant in my basement. I added a third zone valve (Honeywell V8043). I have wired it exactly as shown on page 8 of this docum… read more
Rick Mather
Rick Mather
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how to wire aquastat relay L8148J with sr501 switching rel
how to wire aquastat relay L8148J with sr501 switching relay its for a two zone wiring configuration… read more
Rick Mather
Rick Mather
HVAC Technician
Vocational, Technical or Trade Scho
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Evenin, a quick question on how to wire the thermostat on my
Evenin, a quick question on how to wire the thermostat on my L7224/L7248 Electronic Aquastat. I have 3 zones in my house but only see a T, T/3, 2 and 1 . How do I wire the thermostat to your unit? I j… read more
Rick Mather
Rick Mather
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Rick Ridley

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Tom

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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