Danfoss DHP-A Service Instructions Manual

Also see for DHP-A: User guide User manual Installation and service instructions User manual Installation and service instructions

Contents

Danfoss DHP-A Service Instructions Manual Manual pdf 24 page image

For hose of type PEM DN 40, Øi = 35.2:Table 4. Maximum coil length, hose type PEM DN 40, Øi = 35.2DHP H, DHP-C, DHP-L Calculated maximum coil length per coil, in metresSize 1 coil 2 coils 3 coils 4 coils6 <1000 - - -8 <750 - - -10 <1000 - - -12 <700 <2 x 1000 - -16 <220* <2 x 444* -Table 5. Maximum coil length, hose type PEM DN 40, Øi = 35.2DHP-H Opti, DHP-H Opti Pro, DHP-LOpti, DHP-L Opti ProCalculated maximum coil length per coil, in metresSize 1 coil 2 coils 3 coils 4 coils6 <1000 - - -8 <780 - - -10 <980 - - -12 <630 <2 x 1000 - -16 <250* <2 x 1000 - -*) When dimensioning size 16, a borehole depth that exceeds this recommendation for coil length is oftenrequired. In such cases two coils should be used.The different brine coils are distributed from a common collection well. All return lines are led back to the well andare equipped with choke valves because the flow of each individual coil must be adjusted.4321Figure 17. The collection well for distributing toseveral brine coilsSymbol explanation1 Brine coil 12 Brine coil 23 Choke valves4 Collection wellChoke valves with flow indicators (available as accessories from the Danfoss range) are used to adjust the brineflow so that it is the same in all coils.If choke valves with flow indicators are not available adjust the valves until the temperature of all the coil returnhoses is the same.6.3 Noise information6.3.1 Preventative measuresSome of the following points can also be used when troubleshooting.• Do not install heat pumps on walls adjoining bedrooms.22 – Service instructions VMGFC302