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Hydronic Radiant Heat (HRH) Manifolds
HRH Packages HRH Design Guide HRH FAQ's Snow-Melt Manifolds Copper Full-Flow Manifolds Hydronic Radiant Heating Installation Instructions
Comap Manifolds are the best improvement to Radiant Floor Heat systems since Pex tubing!
The Comap Hydronic Radiant Heat (HRH) Manifold system is modular so you can easily expand the system to as many zones and loops as you need! Just add one return module (HRCMRM) and one supply module (HRCMSM) to the Comap Connection kit (HRCMCK) for each loop to configure your own manifold (or purchase a Comap manifold assembly, details below). It can be configured as a single zone manifold with multiple loops, or as a multiple zone manifold with one loop per zone. Balancing any radiant system is critical for even heating without "hot spots" or "cold-spots"...Comap manifolds have balancing valves to regulate each zone, or loop, for the best possible heat distribution! They also have a thermometer and an automatic air vent on both the supply and return manifolds. The manifolds assemble easily without tools and you can add as many as you need.
NEW! We also stock 1/2" port and 3/4" port copper Full-Flow manifolds, brass balancing valves and accessories, for details, click here.
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The Comap single zone configuration (pictured above as a 3 loop manifold, (HRCMCK03) is used for large open areas that need multiple loops to heat the entire area with one thermostat...large living rooms, garages, basements, warehouses, etc. For a simple set-up, use a line voltage thermostat (HRTH110V) wired direct to the circulator pump to control the flow to the manifold. For systems with more than one single zone manifold, a Zone Pump Controller is used to control the hot water flow to the manifolds. Each loop (Comap module) has a balancing valve to regulate the flow. A flow/temp indicator (HRUQFL3) can be added for more accurate balancing (very helpful if you have loops with different lengths).
The Comap multiple zone configuration (pictured above, HRCMCK15) is used to control the temperature in each room. A zone valve controller is used to control the loop actuators (HRLA24V) installed on the Comap return modules. The zone valve controller also starts the circulator pump when a thermostat (HRTH24V) calls for heat.
The Comap Connection Kit (HRCMCK) is the backbone of both systems and includes 2 Comap 1" FPT manifold inlet adapters with ball valves, 2 manifold fill-and-drain adapters, 2 automatic air vents, 2 thermometers (supply water temp. and return water temp.) and 2 manifold mounting brackets.
Add supply modules (HRCMSM) and return modules (HRCMRM), one of each per zone or loop, to the Connection Kit to complete the basic manifold assembly (A return module with integral flow meter, HRCMFLM, is also available for single zone manifolds). You will need (2) 1/2" Loop Fittings (HRXL3 crimp or HRXC3 compression) for each module to connect 1/2" BPex tubing loops to the manifold (for professional installations, we recommend the HRXL3 1/2" crimp loop fittings.) The manifold has an inlet and outlet to plumb to your heat source (boiler, water heater, etc.)
A Zone Pump Controller (HRCP431S, HRCP432, HRCP433, HRCP434, and HRCP436) is the brain of radiant systems that controls 1, 2, 3, 4 or 6 zones (for single or multiple manifold applications). When a thermostat (HRTH24V) calls for heat, the zone pump controller sends a control signal to start your boiler and circulator pump or motorized zone valve so hot water will flow. Domestic hot water (DHW) priority mode can be used on zone one for systems that use a common heat source for both heating and DHW. Includes detailed installation instructions.
The Zone Valve Controller (HRVC544E, HRVC546E) is the brain of the multiple zone manifold system that controls the zone valves (HRMV4 or HRMV5) or loop actuators (HRLA24V) (use additional zone controllers for systems with more than 6 zones). When a thermostat (HRTH24V) calls for heat, the zone controller sends a 24 volt control signal to start your boiler and/or circulator pump and opens a Loop Actuator, or motorized zone valve, so hot water will flow. LED's indicate active zones and the domestic hot water (DHW) priority mode can be used for systems that use a common heat source for both heating and DHW. Includes an integral 24V transformer and detailed installation instructions.
Thermostatic mixing valves - (HRTV4, HRTV4th, HRTV5, or HRTV5th) are used to control the temperature of the hot water supply to the manifold. This is necessary when the design temperature is significantly lower than the supply water temperature from the heat source (most radiant systems require supply water in the 90 F to 125 F range) . The thermostatic mixing valve installs in the plumbing between the manifold and the boiler. It blends return loop water from the manifold(s) and supply water from the boiler to a manually set temperature. Thermostatic mixing valves are required If using a std domestic hot water heater as your radiant heat source. Includes detailed installation instructions.
Circulator Pump Assembly (HRGP1assy or HRT007Fassy) connects to Comap manifold for easy installation. Includes circulator pump (HRGP1 or HRT007F). 1" OEM flange set (HRGFLG5 or HRTFLG5) and a Pump Mount Kit for Comap manifolds (HRMVSPMK). 1" FPT connections for plumbing to boiler supply line. For potable systems, bronze corrosion resistant pumps sre available HRT007BF). HRGP1 Circulator Pump Installation Tips
Expansion tanks are required for all hydronic radiant heat systems. An internal air charged diaphragm provides an air-cushion to the system. The size of the expansion tank is determined by heat source size. Expansion tanks (HWT05 and HWT12) install in the heat source supply or return plumbing and are available with an automatic fill valve (HRMVSFT109, HRMVSFT110 and HRMVSFT111) to maintain minimum system pressure.
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Comap Manifold Kits
Comap Manifold Kits can be used as either single-zone manifolds or multi-zone manifolds. For single zone manifolds, add (1) HRCMFLM(upgrade) per loop for proper loop balancing. For multi-zone manifolds, add (1) HRLA24V loop actuator per loop (HRLA24V is a zone valve that installs directly to the HRCMRM return actuator modules). Comap manifold kits are available with either crimp loop fittings that require a 1/2" crimp tool for installation (crimp loop fitting kits have part numbers ending with "L"), or compression loop fittings that do not require a crimp tool for installation (compression loop fitting kits have part numbers ending with "C").
Comap manifold kits include:
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(1) Comap Connection Kit (HRCMCK) |
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(1) Supply Module (HRCMSM) per loop |
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(1) Return Module (HRCMRM) per loop |
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(2) 1/2" Crimp Loop Fittings (HRXL3) per loop (crimp tool required) |
| HRCMCK01L - 1 Loop Manifold List $253.04 Click for Sale Price |
| HRCMCK02L - 2 Loop Manifold List $323.38 Click for Sale Price |
| HRCMCK03L - 3 Loop Manifold List $393.72 Click for Sale Price (image above) |
| HRCMCK04L - 4 Loop Manifold List $464.06 Click for Sale Price |
| HRCMCK05L - 5 Loop Manifold List $534.40 Click for Sale Price |
| HRCMCK06L - 6 Loop Manifold List $604.74 Click for Sale Price |
| HRCMCK07L - 7 Loop Manifold List $675.08 Click for Sale Price |
| HRCMCK08L - 8 Loop Manifold List $765.42 Click for Sale Price |
| HRCMCK09L - 9 Loop Manifold List $835.76 Click for Sale Price |
| HRCMCK010L - 10 Loop Manifold List $906.10 Click for Sale Price |
Crimp Tool Rental as low as $1.69 per day (3/8", 1/2", 3/4" and 1" crimp tools available, deposit required)
To upgrade your return modules to HRCMFLM flow meters, you will need (1) HRCMFLM(upgrade) for every loop in your manifold. Note: HRCMFLM return modules are for use in single zone manifolds only. Loop Actuators will not install on an HRCMFLM.
Same as above except with compression loop fittings (HRXC3) No crimp tool required!
| HRCMCK01C - 1 Loop Manifold Assembly List $267.98 Click for Sale Price |
| HRCMCK02C - 2 Loop Manifold Assembly List $353.26 Click for Sale Price |
| HRCMCK03C - 3 Loop Manifold Assembly List $438.54 Click for Sale Price (image above) |
| HRCMCK04C - 4 Loop Manifold Assembly List $523.82 Click for Sale Price |
| HRCMCK05C - 5 Loop Manifold Assembly List $609.10 Click for Sale Price |
| HRCMCK06C - 6 Loop Manifold Assembly List $694.38 Click for Sale Price |
| HRCMCK07C - 7 Loop Manifold Assembly List $779.66 Click for Sale Price |
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HRCMCK08C - 8 Loop Manifold Assembly List $881.89 Click for Sale Price |
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HRCMCK09C - 9 Loop Manifold Assembly List $967.17 Click for Sale Price |
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HRCMCK010C - 10 Loop Manifold Assembly List $1052.45 Click for Sale Price |
To upgrade your return modules to HRCMFLM flow meters, you will need (1) HRCMFLM(upgrade) for every loop in your manifold. Note: HRCMFLM return modules are for use in single zone manifolds only. Loop Actuators will not install on an HRCMFLM.
Radiant Tubing pricing and details
For a complete Radiant Heat System, add BPex Tubing and installation supplies (or check out our radiant heat packages). The absolute maximum loop length for 1/2" tubing is 300'. The recommended loop length is 290', or less. Shorter loop lengths work better because they provide less temperature drop in the loop. Hot-spots and Cold-Spots become very noticeable with longer loop lengths.
Oxygen Barrier Pex Tubing is designed specifically for radiant systems, including closed hydronic under-floor heating systems with ferrous components (cast iron boiler and pumps, geothermal systems, etc.)
Barrier Pex (or Pex) tubing is generally spaced 6" to 16" on center in concrete slabs depending on the design temperature, heat loss, flow rate and several other factors. Most living areas require 6" to 8" spacing and most garages and basements require 10" to 16" spacing. Closer tubing spacing and shorter loop lengths allow for even heat distribution and helps minimize Hot-Spots and Cold-Spots due to excessive temperature drop in the loops. For 6" spacing, you will need 2 feet of tubing for every square foot of heated area, 8" spacing requires 1.5 ft per sq ft, 12" spacing requires 1 ft per sq ft and 16" spacing requires .75 ft per sq ft. Questions? just email us at sales@mvsupply.biz.
Radiant Tubing pricing and details
Tubing Installation Supplies:
Screw Clips (CLC3) and Nylon Tubing Zip Ties (HRCTMV100) secure Pex or BPex tubing loops prior to pouring concrete. Screw Clips install on the foam-board insulation to hold the tubing and the Zip Ties secure the tubing to the re-mesh or re-bar (tubing needs to be secured every 30"). Protective Elbow Sleeves (HRSL3) install wherever the tubing enters the concrete. The Protective Sleeve (HRCSL3) is used to protect the tubing at expansion joints and control grooves.
Note: Comap manifold and radiant package item numbers ending with "L" require a 1/2" crimp tool. Even though Radiant systems are very easy to install, we recommend installation by licensed, experienced professional installers. Radiant systems require electrical wiring, which must be comply with the NEC and other local electrical codes, if applicable. All electrical wiring must be preformed by a licensed electrician.
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