Face Book
Pin It
Reddit
Tweet This
Email This Page
Print This Page
Weil-McLain 386700350
Weil-McLain 386700350
Hover to zoom
1 of 1

Weil-McLain Steam - Tankless Water Heater Kit

Model:

386700350

Write A Review
$497.00
Free Shipping
  Learn More About Free Freight
Free Shipping
*This product qualifies for Free Shipping anywhere in the contiguous US. Accessories may ship separately. Items over 100lbs shipped via semi-truck, be sure to select "Lift Gate" to lower the product to the ground curbside. Remote area surcharges may apply, see our full shipping policy for more details.
In-Stock
Ships Thursday, Apr 10th
Shipping to60601
synchrony card logo
$83 / Month
Suggested monthly payments with 6 month financing.
Weil-McLain Steam - Tankless Water Heater Kit
Weil-McLain Steam - Tankless Water Heater Kit
Model: 386700350
$497.00
Features
Specifications
Reviews
How-To Articles
Manuals

Features

    This tankless water heater kit allows you to use the power and efficiency of select Weil-McLain steam boilers for domestic hot water production. Tankless water heaters lack the recovery period of traditional tank-type water heaters, providing you with on demand hot water twenty-four hours a day. Another advantage of installing a tankless water heating coil in your boiler is the space savings. A tankless coil increases the space necessary to install your boiler only slightly, as a result of the additional piping. However, direct and indirect fired water heaters are frequently larger than boilers themselves. If you value economy of space and energy, consider adding this tankless water heating kit to a Weil-McLain steam boiler.
  • Product Compatible With
  • Weil-McLain PEG-S-PIDN-T Steam Boilers
  • Weil-McLain EG-S-PIDN-T Steam Boilers
  • Weil-McLain EGH-S-PID-T Steam Boilers
  • Weil-McLain SGO Steam Boilers
California residents see
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.
For more information go to: www.p65Warnings.ca.gov

Specifications

386700350
specs product image PID-49939
Overview
Product Category
Boiler
UPC
0672619129535
General Information
Product Category
Boiler
Medium Learn More
Medium
Medium refers to the substance that carries heat through the heating system. Systems are either designed to use either Hot Water or Steam as a medium, and components are usually specific to one or the other.
Steam
Storage Type
Tankless
Coils Quantity
Single
Dimensions
Cold Water Inlet
3/4 Inch
Hot Water Outlet
3/4 Inch
Product Weight
15 Pounds

Reviews

(3)
Weil-McLain 386700350 Reviews & Ratings
Verified Buyer
Verified Buyer
Perfect Replacement Part. Easy Install And Works Really Well.
By Laurence C 
Abington, Massachusetts
Purchased 03/12/2021 | 
Review Posted 04/02/2021 
Perfect fit and was easy to install. Solved the problem quickly.
Laurence C Recommends This
Was this review helpful?
Rating Breakdown
Features
5/5
icon-review-marker
Quality
5/5
icon-review-marker
Performance
5/5
icon-review-marker
Value
5/5
icon-review-marker
Pros:
High Quality, Price, Fast, Id Buy It Again
Cons:
None
Verified Buyer
Verified Buyer
Easy To Install, Came With Everything Needed For DHW Production
By Richard H 
Torrington CT, Connecticut
Purchased 08/29/2020 | 
Review Posted 09/22/2020 
The Weil McLain 386-700-350 hot water boiler insert was easy to install and came with everything needed to use the boiler as domestic hot water production. The kit came with a new tankless coil insert, wire harness mounts for the wire temperature wire, screws, gasket, stud bolts with brass nuts to hold the insert in, as well as a wire protector for the thermostat housing and a thermostat and well. The kit did not come with Thermostat wire or fittings for the plumbing. The kit also did not have instructions. These can be found in the boiler manual (although this section in the boiler manual was not detailed). Albeit Instructions aren’t really needed for this install. The boiler was new as well. The boiler came with a block off plate and knock out panel in the boiler jacket. I knocked out the knock out. Removed the block off plate. Removed the gasket. I installed the new gasket. Did not replace the studs and nuts. Reused the studs and nuts that came with the boiler for the block off plate. I then pushed the coil inside. I had to tweak the coil slightly to fit into the boiler. I then tightened the studs into the boiler and then evenly tighten the brass nuts securing the tankless coil into the boiler. I then used 3/4 male copper threaded fittings to 3/4 copper sweat fittings for the water connection. I also reused the existing thermostat as this was a customer adjustable Thermostat. I used the new thermostat well with the old Thermostat. The new Thermostat was an L4080 by Honeywell. The existing was an L4006. The thermostat well was also a 3/4 male threaded fitting.

The kit could be cheaper if the Thermostat was sold separately but it is nice that the kit comes with what is needed to install a new system for DHW or replace a failed coil in an existing system.

This system supplies a 40 gal tank so the hot water is practically endless even with two showers, a dishwasher and a washing machine. The tankless coil can work to heat the tank while the tank acts as a 40 gallon buffer. Depending on the boiler size and temperature the amount of hot water produced by the coil in GPM is listed in the boiler manual.
Richard H Recommends This
Was this review helpful?
Rating Breakdown
Features
5/5
icon-review-marker
Quality
5/5
icon-review-marker
Performance
5/5
icon-review-marker
Value
4/5
icon-review-marker
Pros:
High Quality, Id Buy It Again, Easy to install, Plenty of hot water
Cons:
Bad Instructions, Expensive
Verified Buyer
Verified Buyer
This product came with everything required to perform the instal
By David D. 
Pittsfield, Massachusetts
Purchased 02/20/2020 | 
Review Posted 03/14/2020 
I was convinced that I’d spend a day but with the items provided in the kit, it became a simple job taking less that two hours to accomplish. Great product providing everything except the plumbing.
Tganks
David D. Recommends This
Was this review helpful?
Rating Breakdown
Features
5/5
icon-review-marker
Quality
5/5
icon-review-marker
Performance
5/5
icon-review-marker
Value
5/5
icon-review-marker
Pros:
Easy To Use, Price, Exceeded Expectations, High Quality

How-To Articles

Hydronic System Accessory Guide
Hydronic System Accessory Guide
How warm does a coat keep you without gloves and a hat? Accessories are sometim...
How to Increase Efficiency and Comfort in Your Boiler
How to Increase Efficiency and Comfort in Your Boiler
Low energy costs and a comfortable home are the hallmarks of an efficient, effe...
How to Pick the Perfect Hot Water Towel Warmer
How to Pick the Perfect Hot Water Towel Warmer
Hydronic towel warmers are a great way to take advantage of your existing hot w...
eComfort How-To Library
eComfort How-To Library
Articles, Tips and Buying Guides from Our Experts

Manuals

 
Media Gallery
Weil-McLain Steam - Tankless Water Heater Kit
Weil-McLain 386700350
Customer Review Images