We do not offer this modulating boiler in a propane gas system.
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Fully Modulating Boiler with Outdoor Reset Radiant Made Simple (RMS) Pre-Plumbed Panels, 10,236 BTU, 3 kW, Model# RMS-3-AA

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Shipping:
Factory shippedStore Pickup:
Not available - online only
- Compact and lightweight design
- Full modulation for precise BTU demand output
- Thermolec TMB electric boiler assembly
- Aquastat control - adjustable supply water temperature range up to 190°F
- Outdoor reset control
See full description
Description
Key Specs
Reviews
Q & A
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Warranty
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Product Summary
What's Included
- (1) Radiant floor heat electric boiler panel
Features + Benefits
- Compact and lightweight design
- Full modulation for precise BTU demand output
- Thermolec TMB electric boiler assembly
- Aquastat control - adjustable supply water temperature range up to 190°F
- Outdoor reset control
- 30 PSI pressure relief valve
- Circuit breaker (control switch)
- No venting required
Key Specs
| Attribute | Specification |
|---|---|
item# | 77513 |
Brand | Radiant Made Simple |
Manufacturer's Warranty | 2 year limited warranty |
Ship Weight | 80.0 LB |
Product Type | Boiler Panel |
Amps | 12.5 |
| Attribute | Specification |
|---|---|
Hardwired | Yes |
Thermal Cutoff Safety Device | Yes |
Remote Included | No |
Thermostat Included | No |
Product Weight | 70 lb |
Reviews
Questions & Answers
Questions
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· 2 years ago
Do you offer this same configuration with a gas propane heating system
1 answer-
ProductExpert6· 2 years ago
Helpful?
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· 2 years ago
What is the connection size for the 5x manifold ports?
1 answer-
ProductExpert11· 2 years ago
The RMS-3-AA supports up to 600 square feet using (2) 1/2" x 300' loops. The RMS-11-AA will support up to 1500 square feet using (5) 1/2" x 300' loops.
Helpful?
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· 3 years ago
What size wire is recommended to supply power, 25 feet from breakers panel.
1 answer-
ProductExpert38· 3 years ago
10 gauge copper wire should be used for 240 V, and 14 gauge wire for dedicated circuit for circulator pump.
Helpful?
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· 4 years ago
What external thermostat is recommended for this unit?
1 answer-
ProductExpert11· 4 years ago
A non programmable external thermostat (model T771) is included.
Helpful?
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· 4 years ago
Can this boiler be used for hot water cast iron radiators? Or is it just for floor radiant heat?
1 answer-
ProductExpert38· 4 years ago
This is designed and intended for use in floor heat applications only.
Helpful?
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· 4 years ago
What do you recommend for a small 120 sq ft outbuilding?
1 answer-
ProductExpert38· 4 years ago
This is the proper model to use for up to 300 square feet.
Helpful?
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· 4 years ago
Doest it matter what type of glycol "antifreeze" is run through this unit
1 answer-
ProductExpert38· 4 years ago
The best product for freeze protection is a Propylene Glycol that contains inhibitors.
Helpful?
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· 4 years ago
Will this product work on a 208V 3-phase circuit? Thank you.
1 answer-
ProductExpert12· 4 years ago
This system is single phase and requires a 220 volt 20 amp breaker.
Helpful?
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· 4 years ago
i have seven zones, what kind of unit 1500 sq
1 answer-
ProductExpert12· 4 years ago
This unit is designed for heating up to 300 square feet. The largest system we currently offer is item 77512. It has a 5 port supply manifold that can support up to 5 loop pipes at 300 feet each and it is capable of heating an area up to 1200 square feet.
Helpful?
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· 5 years ago
Hi there I have a three zone about 500 square-foot I’m wondering what kind of unit to do I need?
1 answer-
ProductExpert12· 4 years ago
These systems do not heat individual zones; individual zones require separate thermostats. This system is capable of heating an area up to 300 square feet. For a system that can heat an area up to 500 square feet, please view item 77514.
Helpful?
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Accessories We Recommend
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Warranty
Manufacturer's Warranty
2 year limited warranty
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Specifications
Boiler Panel
Floor Tubing
Floor Tubing
Floor Tubing
12.5
2
15
6
Yes
Yes
Yes
Yes
Yes
-
-
-
No
No
No
No
No
Yes
Yes
Yes
70 lb
3.7000 lb
28.4000 lb
11.5000 lb
-
66 ft
990 ft
396 ft
-
120
240
240
-
Yes
Yes
Yes
-
240
3,600
1,440
-
8.75 x 8.75 x 4.6 in
12.25 x 12.25 x 7.25 in
11.6 x 11.6 x 4.8 in
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