The drawing below shows a simple, single zone hot water baseboard system.
CONNECTION TO HYDRONIC RADIANT FLOOR SYSTEM:
RADIANT FLOOR GUIDELINES:
Use only oxygen barriered, cross-linked, high-density polyethylene for radiant floor installation. ComfortPro, Uponor, and Roth are the preferred brands. Radiant floor systems must be installed in strict compliance with the manufacturer’s instructions. In addition: DO NOT USE steel, copper, rubber based hose (such as Heatway or Entran tubing), low-density polyethylene, polybutylene or PVC plastic pipe as radiant floor tubing. All of these involve significant and complex corrosion and durability issues for the tubing, pumps, controls, and GARN® equipment. The installation of rubber based hose (such as Heatway or Entran tubing), low-density polyethylene, polybutylene or PVC plastic pipe in a radiant floor system directly connected to a GARN® unit will void the GARN® and pump warranty. In new construction, install 2” of blue, yellow, green or pink foam board ( extruded polystyrene foam – minimum of 1.6 PCF density, per ASTM C 578-95 specification) under the entire slab that is to be radiantly heated. The foam should be placed immediately below the bottom of the slab, on 6” of well compacted granular fill. This construction provides a proper structural bed (compacted gravel) and minimizes downward heat loss. When radiant heating is installed on above grade floors, the underside of the floor MUST be insulated to prevent downward heat loss and overheating of the rooms below. A minimum insulation valve of R =13 is recommended.
The radiant floor manifolds supplied by the manufacturers listed, provide for room-by-room control while using only a single pump and mixing valve.
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Hydronic System Design Manual ©DECTRA CORPORATION - March 2013
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