Through this webpage, choose online customer service communication, or message board. Leave your needs and get limited time discounts, up to 10% off, saving you a fortune. This discount has an indefinite period, and places are limited on a first-come, first-served basis.
We support various payment methods:
T/T payment
VISA
paypal
MasterCard
Alipay etc
Save time in your buying process.
The company's products have passed multiple national
certifications:
for example:
United States: ASME
EU: CE
Eastern Europe: EAC
Russia: GOST
Singapore: MOMO
etc
Buy products, buy with confidence, use with confidence
Domestic hot water and heating series: gas hot water boiler, vacuum hot water boiler, vertical atmospheric pressure hot water boiler, electric hot water boiler Factory use, high temperature steam: wns fuel gas steam boiler, szs water tube steam boiler, vertical steam boiler, electric steam boiler
FANGKUAI is founded in 1998, which is a clean fuel boiler enterprise integrating R&D, manufacturing, sales and service. In the past 20 years of development and innovation, the company has grown into a global enterprise, and its products have been exported to more than 80 countries including Russia, Mongolia and Thailand, and have established long-lasting cooperative relations with local enterprises!
If you are interested in our company or products, you can contact with us through online consulting, demand table submission, e-mails and telephones. Our staff shall wholeheartedly provide product information, application knowledge and good service for you.
Circulators or Zone Valves and boiler placement
HOT
Capacity:1-20t/h
Rated thermal efficiency: 100-104%
Fixed working pressure: ≤1.6MPa
Applicable fuel:natural gas etc.
HOT
Capacity:0.7-14MW
Rated thermal efficiency:96-98%
Fixed working pressure:≤1.25MPa
Applicable fuel:Natural gas, light oil, etc.
HOT
Capacity:0.7-2.8Mw
Rated thermal efficiency: 97.2-106%
Fixed working pressure:0.1MPa
Applicable fuel:Natural gas, etc.
HOT
Capacity:2.8-7.0Mw
Rated thermal efficiency:≥105.5%
Fixed working pressure:-0.02MPa
Applicable fuel:Natural gas, etc.
HOT
Capacity:99Kw
Rated thermal efficiency:97.2-104.4%
Fixed working pressure:1.0MPa
Applicable fuel:Natural gas, etc.
HOT
Capacity:0.5-4.0 t/h
Rated thermal efficiency:98%
Fixed working pressure:≤1.25MPa
Applicable fuel:electric energy
Each loop / zone is connected to the hydronic boiler fill valve and has the ability to be isolated from the other loops. Ball valves and drains isolate the system. Water is introduced into the hydronic system in one way, flowing down the piping and out the boiler drain, carrying the air …Get Price
A zone valve is hooked directly to a thermostat. On a call for heat, the thermostat contacts close completing the circuit to the zone valve and energizing a small motor in the zone valve. This motor opens the valve. As the valve opens an end switch in the zone valve closes. This energizes the hot water loop circulator pump via a relay.Get Price
A zone valve is hooked directly to a thermostat. On a call for heat, the thermostat contacts close completing the circuit to the zone valve and energizing a small motor in the zone valve. This motor opens the valve. As the valve opens an end switch in the zone valve closes. This energizes the hot water loop circulator pump via a relay.Get Price
ZONE VALVES/CIRCULATORS It is recommended to use zone valves in multi-zone applications with the EZB-Eco boiler. ROOM THERMOSTAT PLACEMENT Fin tube radiation, fan coil, etc. – heat only wall thermostat, connected to operate zone valves (see previous section) or for single zone the thermostat is connected directly to EZB-Eco R and W.Get Price
It modulates the circulator to inject hot water from the boiler loop into the radiant or reduced temperature loop while providing outdoor reset to a heating system. Available in any style 006 – 0014, the 00 ® Series Variable Speed Outdoor Reset Circulator also comes with a boiler sensor to protect against low return temperatures.Get Price
Zone valves and circulator on return line. timm08 Member Posts: 3. 7:18PM. in THE MAIN WALL. We have a boiler with a single circulator and two zone valves - one for the majority of the house with radiators and another for an addition that has baseboards. Is it a problem if the zone valves and the circulator pump are on the return line?Get Price
Zone Valve Wiring Diagrams Boiler Wiring Diagrams Wiring f or 4 Wire Zone Valve Low Voltage 120 Volts 120v 24v Boiler Connections T 1 T 2 3 Zone Valve Hot Neutral Wiring for Zone Valve Boiler Circulator Burner Control L8148E/J W i r ng f Bu e …Get Price
Jan 18, 2011 · 1) A single circulator and 4 zone valves, plus a differential pressure bypass valve. 1 pump and 4 zone valves total. 2) Separate circulators for each zone, and also a 5th circulator for the 1 1/4" loop from/to the boiler. 5 pumps total.Get Price
Best Boiler Piping practices and ECM Circulator Technology Training This comprehensive class will cover: • The best way to pipe todays boilers; from Series loop systems to Primary/ Secondary • Circulator Placement and sizing • Zone pump vs zone valve systems • Indirect DHW systems • Why ECM circulators? What benefits doGet Price
May 17, 2013 · He said the two zone circulators (on the right) are installed at the return and the boiler circulator is installed at the boiler supply. The direction of the flow for the two zone circulators is down.Get Price
Feb 20, 2010 · Boilers - Home Heating Steam and Hot Water Systems - Zone valves or circulator pumps? - Narrowing down my choices on a new system configuration. Should I go multiple circulators (4 zones plus indirect, 5 total) or one pump and 5 zone valves? Will the one pump (B&G Alpha) be enough for second floor split loop, 3Get Price
Zone valves and circulator on return line. timm08 Member Posts: 3. 7:18PM. in THE MAIN WALL. We have a boiler with a single circulator and two zone valves - one for the majority of the house with radiators and another for an addition that has baseboards. Is it a problem if the zone valves and the circulator pump are on the return line?Get Price
Dec 10, 2011 · Ive been doing plumbing/heating for more years than I care to remember and have built boilers using the circs on the supply and return but in most cases where the circulators were put on the supplies it was mainly just because that's how it was spec'd as well as being IFC circs. Usually it wasGet Price
Typically heating systems using zone valves will have two or more zone valves (usually but not always located close to the heating boiler) and a single circulator pump (usually located on the return end of the hot water piping close to the heating boiler).Get Price
Dec 10, 2011 · Ive been doing plumbing/heating for more years than I care to remember and have built boilers using the circs on the supply and return but in most cases where the circulators were put on the supplies it was mainly just because that's how it was spec'd as well as being IFC circs. Usually it wasGet Price
Zone Valve. NCB Series Combi-Boiler . Navien NCB Combi-Boiler Application Single Circulator with Multiple Zone Valves Shown. Purge H Gas Hydronic Feed Water Domestic Hot Water Domestic Cold Water Condensate Heating Gas Domestic S R C 6" Min 12" Max Field Supplied Circulator Zone Panel Shall have Dry Contacts Closed On Heat Calls Wired to Navien Get Price
Aug 10, 2009 · This means in the supply line coming out of the boiler; the air/dirt separator, Expansion Tank, and makeup water connection should be between the Boiler and Pump. The order is: 1) Boiler (s), 2) Air Separator, 3) Tee-off for Expansion Tank, typically with makeup water as well, 4) Main loop Circulator Pump, 5) Supply header off of which loads Get Price
Zone valves and circulator on return line. timm08 Member Posts: 3. 7:18PM. in THE MAIN WALL. We have a boiler with a single circulator and two zone valves - one for the majority of the house with radiators and another for an addition that has baseboards. Is it a problem if the zone valves and the circulator pump are on the return line?Get Price
2. Boiler circulator(s) must be rated for open loop applications. Do not use cast-iron circulators. 3. Boiler circulator(s) operate continuously. 4. The minimum pipe size for connecting to a water storage tank is 1 ½". 5. The minimum pipe size for connecting the boiler is 1 ½" for the Mod Con 300 VWH and 2" for the 500 and 850 models. 6.Get Price
Oct 31, 2019 · Correct placement of circulators, zone valves, expansion tanks and venting is vital for the longevity of a boiler and heating system. If components of the heating system are not installed correctly, the boiler cannot operate as intended by the manufacturer. In fact, most boiler repairs and issues are a direct result of improper installation.Get Price
Jun 11, 2006 · Hi All, I think I have the terminology correct. So I had 4 contractors come over so far to give me estimates for a new boiler and indirect hot water tank. Some of them said to get rid of the zone valves that i have and put circulator pumps in for each zone. Others said to keep them. From what I understand, the benefit of multiple circulators is that if one pump dies, the …Get Price
Guide to heating system zone valves - Zone valve Get Price
Jun 18, 2014 · ALL they can do is regulate flow, and again from "full on" through "full off." This distinguishes TRVs from more common forms of "zoning" such as by on-off valves or on-off circulators, which do provide a control link between the boiler and the zone controller (typically a wall thermostat).Get Price
Generally package boilers come with a system circulator. They also have a transformer to drive 6 or so zone valves, as well as a relay to switch on that "free" circ. So really ZV are a fairly simple install, in that respect.Get Price
The "zone valve" gang retort that modern heating zone valves are as reliable or more reliable than [some models of] heating circulator pumps and that a zone valve costs a lot less. And adding zone control to an existing heating system may be less costly by adding a zone valve than by adding a circulator pump.Get Price
the next section, Zone Controller. If not using zone controller, the end switches of all of the zone valves are paralleled and directly control R and W to turn on the boiler. Various water temperature requirements – if this is the case, a primary loop with mixing valve for the various zone temperature requirements is necessary.Get Price
Nov 21, 2016 · What you show in your updated question looks like a Taco zone-valve. The bottom cast-metal part is the actual valve. The top part, in a plastic enclosure, is just the Zone-Valve Power-Head. This is a separately purchased part and is designed to be replaced without disturbing the plumbing.Get Price
8. Install a minimum of 12 diameters of straight pipe upstream of all circulators. 9. A purging valve may be used in lieu of the ball valve / hose bib combination shown. Drawing 2E make-up water closely spaced tees space heating zone circuit purging valves Munchkin boiler T/P PB1 P2 Super Stor indirect DHW tank anti-scald mixing valve Munchkin Get Price
Mar 14, 2007 · Says move the system to an outside wall (about 13' from its current location) for direct venting and to allow for outside air intake. This means more copper piping for each of 3 zones in and out of the boiler, but shorter PVC piping for intake and outake. He recommends changing to zone valves instead of using circulators on each zone.Get Price
Typically heating systems using zone valves will have two or more zone valves (usually but not always located close to the heating boiler) and a single circulator pump (usually located on the return end of the hot water piping close to the heating boiler). See ZONE VALVES, HEATING for details. Circulator relays on heating boilers - an older and by some heating service technicians, …Get Price
Feel free to reach out if you want to collaborate with us, or simply have a chat.
