The PFGHRD is included in SAP Appendix Q, under the manufacturer's flue instructions. Passive Flue Gas Heat Recovery Devices. Product description Vaillant - PFGHRD 60/100 The PFGHRD (Passive Flue Gas Heat Recovery Device) is designed as a complimentary energy saving system that can be connected to a Contents of package 1.
PFGHRD near the water connections. Distance from the flue outlet centre line to inside wall face, A = 130mm, if using a spacing frame, A = XXmm. Vaillant PFGHRD A5 - 12/12 - 3 -...
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INSTALLATION 3. Installation diagram. Trim ring recoFLUE Air intake Measurement from top of air intake Flue adaptor Vaillant PFGHRD A5 - 12/12 - 4 -...
Note that if you intend to use a spacing frame, use the information provided with the spacing frame to drill additional holes as required. Vaillant PFGHRD A5 - 12/12 - 5 -...
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8. Note that the overall flue length should not exceed the figures shown in the table on page 3, to allow for the additional resistance of the PFGHRD. Vaillant PFGHRD A5 - 12/12 - 6 -...
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/ or water hammer can result in a pressure build-up that may cause damage to the boiler (and other household devices such as showers). Vaillant cannot accept responsibility for damage caused to the boiler or its surroundings where an appliance has 9.