The Green Drain can be used in the outlet connections of floor drain bodies or the inside of the floor drain strainers to seal the opening, preventing odors, sewer gases, and insects from entering up through the floor drain grate.  The Green Drain's four flexible silicone sealing ribs ensure easy installation into openings that have variations in size.  The Green Drain will open to allow drainage and close when there is no water flow.  It can be used in new construction or retro-fit applications where trap primers were never installed.  It is a simple alternative to a trap primer with no mechanical parts to replace or maintain.

The Green Drain can be used in the outlet connections of floor drain bodies or the inside of the floor drain strainers to seal the opening, preventing odors, sewer gases, and insects from entering up through the floor drain grate.  The Green Drain's four flexible silicone sealing ribs ensure easy installation into openings that have variations in size.  The Green Drain will open to allow drainage and close when there is no water flow.  It can be used in new construction or retro-fit applications where trap primers were never installed.  It is a simple alternative to a trap primer with no mechanical parts to replace or maintain.

FEATURES: - Works with all PDQ manual and automatic flush bolts. - Removable face plate for use with thresholds. - Adjustable height for carpeted areas.

Figure 1: P-Trap Operation - All drains to a sewer system have a "P" shaped trap that is usually filled with water.  The trap provides a seal to keep out sewer gas.

We use a mixture that provides freeze protection because the controls offer an “exercise” feature that runs the snowmelt pump periodically during the winter.

10 Apr 2023 — Turn off the water supply: Locate the shutoff valves for the washing machine and turn them off. These are usually located near the plumbing ...

Installing a dedicated boiler eliminates several pitfalls and carries a higher cost. However, I’d like to talk about tying snowmelt into an existing system because it’s where we find the most mistakes in the field.

Related Terms:  drain guard, drain odor blocker, liquid breaker, sureseal, inline floor drain trap, backflow blocker, trap primer, trap primer alternative, trap guard, trap guard protection, drain trap primer, deep water seal traps, sewer gas drain emission, trap evaporation problems, GD2-SHF-W, GD2, GD3, GD35, GD4

Finally, pressure-test the system with air and water before the tubing is covered. Once the system is in operation and the snow flies, be sure to call the customer and ask about its performance. Make sure they understand that snow may take a little while to melt, but also ask if there are any differences in the way the home heats.

Figure 2: P-Trap Failure - When your floor drain is rarely used, water evaporates from the trap over time.  Eventually, the seal is eliminated, allowing pathogens, cross contamination, pests and insects from entering into your facility.  Maintaining water levels within the P-Trap is cruicial to odor management.  A Green Drain insert is recommended to protect your facility and its people.

Figure 2: P-Trap Failure - When your floor drain is rarely used, water evaporates from the trap over time.  Eventually, the seal is eliminated, allowing pathogens, cross contamination, pests and insects from entering into your facility.  Maintaining water levels within the P-Trap is cruicial to odor management.  A Green Drain insert is recommended to protect your facility and its people.

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The Green Drain can be used in the outlet connections of floor drain bodies or the inside of the floor drain strainers to seal the opening, preventing odors, sewer gases, and insects from entering up through the floor drain grate.  The Green Drain's four flexible silicone sealing ribs ensure easy installation into openings that have variations in size.  The Green Drain will open to allow drainage and close when there is no water flow.  It can be used in new construction or retro-fit applications where trap primers were never installed.  It is a simple alternative to a trap primer with no mechanical parts to replace or maintain.

By installing a heat exchanger, you have effectively created an entirely new hydronic system. Think about that heat exchanger as a boiler. It’s the heat source for everything on the load side. That means the snowmelt system needs its own pressure-release valve, expansion tank, air elimination and a source of makeup water.

Related Terms:  drain guard, drain odor blocker, liquid breaker, sureseal, inline floor drain trap, backflow blocker, trap primer, trap primer alternative, trap guard, trap guard protection, drain trap primer, deep water seal traps, sewer gas drain emission, trap evaporation problems, GD2-SHF-W, GD2, GD3, GD35, GD4

If the property doesn’t possess enough boiler capacity, you could tie a supplemental boiler into the main loop of the hydronic system or install a dedicated boiler for the snowmelt system. Consider that it takes 30 to 50 BTUs/square foot of surface area if the system is properly installed.

Snow meltingsystemsfor concrete slabs

Hydronic snow melting systems use a mixture of water and propylene glycol (anti-freeze) that is pumped through a closed loop of PEX tubing. The boilers used for ...

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Hydronic snow melt system

The Green Drain can be used in the outlet connections of floor drain bodies or the inside of the floor drain strainers to seal the opening, preventing odors, sewer gases, and insects from entering up through the floor drain grate.  The Green Drain's four flexible silicone sealing ribs ensure easy installation into openings that have variations in size.  The Green Drain will open to allow drainage and close when there is no water flow.  It can be used in new construction or retro-fit applications where trap primers were never installed.  It is a simple alternative to a trap primer with no mechanical parts to replace or maintain.

End the waiting and the waste — give your customers the convenience and savings of instant hot water with affordable, quality Grundfos hot water recirculation ...

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The Green Drain can be used in the outlet connections of floor drain bodies or the inside of the floor drain strainers to seal the opening, preventing odors, sewer gases, and insects from entering up through the floor drain grate.  The Green Drain's four flexible silicone sealing ribs ensure easy installation into openings that have variations in size.  The Green Drain will open to allow drainage and close when there is no water flow.  It can be used in new construction or retro-fit applications where trap primers were never installed.  It is a simple alternative to a trap primer with no mechanical parts to replace or maintain.

Figure 2: P-Trap Failure - When your floor drain is rarely used, water evaporates from the trap over time.  Eventually, the seal is eliminated, allowing pathogens, cross contamination, pests and insects from entering into your facility.  Maintaining water levels within the P-Trap is cruicial to odor management.  A Green Drain insert is recommended to protect your facility and its people.

With real estate prices going through the roof, more people are adding premium features, such as snowmelt, to their homes instead of moving.

Hydronic snow melt system design

Related Terms:  drain guard, drain odor blocker, liquid breaker, sureseal, inline floor drain trap, backflow blocker, trap primer, trap primer alternative, trap guard, trap guard protection, drain trap primer, deep water seal traps, sewer gas drain emission, trap evaporation problems, GD2-SHF-W, GD2, GD3, GD35, GD4

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Most glycol manufacturers list two factors on their product: freeze protection and burst protection. Freeze protection is the ratio of glycol needed at a specific temperature to prevent the fluid from crystalizing and turning to slush. Burst protection is the ratio needed to keep the fluid from freezing solid and bursting PEX.

The Green Drain can be used in the outlet connections of floor drain bodies or the inside of the floor drain strainers to seal the opening, preventing odors, sewer gases, and insects from entering up through the floor drain grate.  The Green Drain's four flexible silicone sealing ribs ensure easy installation into openings that have variations in size.  The Green Drain will open to allow drainage and close when there is no water flow.  It can be used in new construction or retro-fit applications where trap primers were never installed.  It is a simple alternative to a trap primer with no mechanical parts to replace or maintain.

Another consideration is how to control the water temperature. Snowmelting is a marathon, not a sprint. A slab cannot be heated up too quickly or the surface can be “shocked.” Damage can occur to the surface, either in the form of flaking or stress fractures. The way to avoid this is by manipulating supply water temperatures.

Related Terms:  drain guard, drain odor blocker, liquid breaker, sureseal, inline floor drain trap, backflow blocker, trap primer, trap primer alternative, trap guard, trap guard protection, drain trap primer, deep water seal traps, sewer gas drain emission, trap evaporation problems, GD2-SHF-W, GD2, GD3, GD35, GD4

Figure 1: P-Trap Operation - All drains to a sewer system have a "P" shaped trap that is usually filled with water.  The trap provides a seal to keep out sewer gas.

It’s unlikely, but because you have tied a new, substantial zone into the existing boiler system, some small changes may be needed in the mechanical room. l

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Figure 1: P-Trap Operation - All drains to a sewer system have a "P" shaped trap that is usually filled with water.  The trap provides a seal to keep out sewer gas.

Related Terms:  drain guard, drain odor blocker, liquid breaker, sureseal, inline floor drain trap, backflow blocker, trap primer, trap primer alternative, trap guard, trap guard protection, drain trap primer, deep water seal traps, sewer gas drain emission, trap evaporation problems, GD2-SHF-W, GD2, GD3, GD35, GD4

We prefer to use a Bowman shell-and-tube heat exchanger between the existing hydronic heating system and the new snowmelt system. It’s critical to isolate the snowmelt system from the home heating loop because the snowmelt system requires glycol.

The Green Drain can be used in the outlet connections of floor drain bodies or the inside of the floor drain strainers to seal the opening, preventing odors, sewer gases, and insects from entering up through the floor drain grate.  The Green Drain's four flexible silicone sealing ribs ensure easy installation into openings that have variations in size.  The Green Drain will open to allow drainage and close when there is no water flow.  It can be used in new construction or retro-fit applications where trap primers were never installed.  It is a simple alternative to a trap primer with no mechanical parts to replace or maintain.

Figure 2: P-Trap Failure - When your floor drain is rarely used, water evaporates from the trap over time.  Eventually, the seal is eliminated, allowing pathogens, cross contamination, pests and insects from entering into your facility.  Maintaining water levels within the P-Trap is cruicial to odor management.  A Green Drain insert is recommended to protect your facility and its people.

The next thing to consider is the control strategy. We use tekmar controls on our snowmelt systems exclusively because it offers a wide variety of control systems specifically tailored to snowmelt applications.

Figure 1: P-Trap Operation - All drains to a sewer system have a "P" shaped trap that is usually filled with water.  The trap provides a seal to keep out sewer gas.

Instead, the same glycol mixture used to fill the system should be provided in an automatic glycol feeder. We’ve used both Axiom and NeutraSafe glycol feeders with good results.

There are a few scenarios where you could find yourself adding a snowmelt system to a boiler intended primarily for space heating. Maybe the project is new construction and you’re designing the system from the ground up. Maybe the boiler was sized to handle a later addition of some sort. Or maybe the boiler is just good, old-fashioned oversized.

Related Terms:  drain guard, drain odor blocker, liquid breaker, sureseal, inline floor drain trap, backflow blocker, trap primer, trap primer alternative, trap guard, trap guard protection, drain trap primer, deep water seal traps, sewer gas drain emission, trap evaporation problems, GD2-SHF-W, GD2, GD3, GD35, GD4

After all, if older homeowners want to stay in their homes instead of moving to a 55-and-over community, but snow removal and winter slip-and-fall hazards have them consulting a realtor, there’s an alternative. Hydronics can eliminate both of those risks.

Figure 1: P-Trap Operation - All drains to a sewer system have a "P" shaped trap that is usually filled with water.  The trap provides a seal to keep out sewer gas.

All products sold from Drain-Net have a 1 year limited warranty from date of purchase against defects in material or workmanship, under normal use. Learn more.

Snow melt system for driveways

The simplest automatic method of controlling a small snowmelt system is via a slab sensor. The sensor is embedded in the surface being melted. If the sensor becomes wet while the outdoor temperature is at, below or near freezing, the system will come on.

The heat exchanger is — and will act exactly like — a new zone for the existing boiler. It should have its own zone valve or zone pump, depending on personal preference, the pressure drop of the heat exchanger and the capability of the existing system pump.

The next thing to look at is how the system is piped. Is it primary/secondary piping or some sort of series loop? If it’s not primary/secondary, this may be a good time to make it primary/secondary. We’re going to be adding a heat exchanger for the snowmelt zone, which will change the flow rate, potentially altering how an older hydronic system heats the house.

Last month we discussed snowmelt systems and how keeping them top-of-mind during the summer can be profitable (https://bit.ly/3NhQDdZ). That’s when landscaping work takes place and when many of us have time to service and install them.

Related Terms:  drain guard, drain odor blocker, liquid breaker, sureseal, inline floor drain trap, backflow blocker, trap primer, trap primer alternative, trap guard, trap guard protection, drain trap primer, deep water seal traps, sewer gas drain emission, trap evaporation problems, GD2-SHF-W, GD2, GD3, GD35, GD4

Commercial snow meltsystems

Figure 2: P-Trap Failure - When your floor drain is rarely used, water evaporates from the trap over time.  Eventually, the seal is eliminated, allowing pathogens, cross contamination, pests and insects from entering into your facility.  Maintaining water levels within the P-Trap is cruicial to odor management.  A Green Drain insert is recommended to protect your facility and its people.

The Clinton Station Diner uses grease traps and GDRU's (garbage disposal replacement units) from Drain-Net.Watch the Full Video

Figure 1: P-Trap Operation - All drains to a sewer system have a "P" shaped trap that is usually filled with water.  The trap provides a seal to keep out sewer gas.

Figure 2: P-Trap Failure - When your floor drain is rarely used, water evaporates from the trap over time.  Eventually, the seal is eliminated, allowing pathogens, cross contamination, pests and insects from entering into your facility.  Maintaining water levels within the P-Trap is cruicial to odor management.  A Green Drain insert is recommended to protect your facility and its people.

Figure 2: P-Trap Failure - When your floor drain is rarely used, water evaporates from the trap over time.  Eventually, the seal is eliminated, allowing pathogens, cross contamination, pests and insects from entering into your facility.  Maintaining water levels within the P-Trap is cruicial to odor management.  A Green Drain insert is recommended to protect your facility and its people.

Tom Soukup is the principal of Patriot Water Works with more than 20 years as a hydronic designer and installer. He specializes in high-efficiency and green technology and brings his expertise to custom commercial work, pool heating and agricultural projects. Reach Tom at twsoukup@patriotwaterworks.com.

Figure 2: P-Trap Failure - When your floor drain is rarely used, water evaporates from the trap over time.  Eventually, the seal is eliminated, allowing pathogens, cross contamination, pests and insects from entering into your facility.  Maintaining water levels within the P-Trap is cruicial to odor management.  A Green Drain insert is recommended to protect your facility and its people.

Snow melt system for roof

On the other hand, if it’s a condensing boiler, there’s no reason to be concerned about return water temperatures. The speed at which water moves through the heat exchanger (more on that later) will determine the temperature of the boiler return water.

We certainly don’t expect a leak in the snowmelt system, but we can’t provide pure water for makeup. In the event of a slow leak, filling the system with pure water would dilute the glycol mixture in the tubing and reduce its level of freeze protection.

The Green Drain can be used in the outlet connections of floor drain bodies or the inside of the floor drain strainers to seal the opening, preventing odors, sewer gases, and insects from entering up through the floor drain grate.  The Green Drain's four flexible silicone sealing ribs ensure easy installation into openings that have variations in size.  The Green Drain will open to allow drainage and close when there is no water flow.  It can be used in new construction or retro-fit applications where trap primers were never installed.  It is a simple alternative to a trap primer with no mechanical parts to replace or maintain.

Related Terms:  drain guard, drain odor blocker, liquid breaker, sureseal, inline floor drain trap, backflow blocker, trap primer, trap primer alternative, trap guard, trap guard protection, drain trap primer, deep water seal traps, sewer gas drain emission, trap evaporation problems, GD2-SHF-W, GD2, GD3, GD35, GD4

The first thing to look at after capacity is whether the boiler is a modulating or conventional unit. If it’s conventional, we’ll need to avoid returning water to the boiler below 130 degrees or risk cracking the boiler or creating condensate in the flue. Keep in mind that oil boilers are generally even more sensitive to low water temperatures than conventional gas models.

Our whole house water filter systems grant you absolute control by removing and reducing the most while retaining the best, giving you multiple lines of ...

Snow melt system controls

Related Terms:  drain guard, drain odor blocker, liquid breaker, sureseal, inline floor drain trap, backflow blocker, trap primer, trap primer alternative, trap guard, trap guard protection, drain trap primer, deep water seal traps, sewer gas drain emission, trap evaporation problems, GD2-SHF-W, GD2, GD3, GD35, GD4

Filling the whole house system with glycol is not advised for three reasons: it is mildly corrosive, a glycol/water mixture carries fewer BTUs per gallon than straight water, and it is more viscous than water, meaning it’s harder to pump.

The Green Drain can be used in the outlet connections of floor drain bodies or the inside of the floor drain strainers to seal the opening, preventing odors, sewer gases, and insects from entering up through the floor drain grate.  The Green Drain's four flexible silicone sealing ribs ensure easy installation into openings that have variations in size.  The Green Drain will open to allow drainage and close when there is no water flow.  It can be used in new construction or retro-fit applications where trap primers were never installed.  It is a simple alternative to a trap primer with no mechanical parts to replace or maintain.

Electric snow melt system

Figure 1: P-Trap Operation - All drains to a sewer system have a "P" shaped trap that is usually filled with water.  The trap provides a seal to keep out sewer gas.

Figure 1: P-Trap Operation - All drains to a sewer system have a "P" shaped trap that is usually filled with water.  The trap provides a seal to keep out sewer gas.

When determining how and if a snowmelt system can be added to an existing hydronic system, the No. 1 consideration is whether the existing boiler can support it. It will depend on the size of the proposed snowmelt system and the size of the existing boiler.

When selecting a pump to circulate the fluid within the snowmelt system, consider the ratio of glycol and water you’ve selected. As previously mentioned, glycol is more viscous than water, so a glycol mixture will create more pumping resistance than water alone.

Expansion Tank Sizing Chart For Residential Water Heaters. Water Heater Capacity in Gallons. Inlet Water. Pressure*. 30. 40. 50. 66. 82. 100. 40 PSI. TW5. TW5.

Figure 2: P-Trap Failure - When your floor drain is rarely used, water evaporates from the trap over time.  Eventually, the seal is eliminated, allowing pathogens, cross contamination, pests and insects from entering into your facility.  Maintaining water levels within the P-Trap is cruicial to odor management.  A Green Drain insert is recommended to protect your facility and its people.

Figure 1: P-Trap Operation - All drains to a sewer system have a "P" shaped trap that is usually filled with water.  The trap provides a seal to keep out sewer gas.

On small snowmelt systems (500 square feet and under), we prefer to use a premanufactured mixing block. We’ve used Viega and Taco mixing blocks in the past, though others are on the market. On larger snowmelt systems, we use a snowmelt controller with a separate injection pump.