Protective and safety equipment as well as components that facilitate servicing (e.g. non-return valves, safety valves, overflow valves, shut-off valves) must be installed in accordance with national regulations and standards.
[Docking-ComponentNotesParagraph]
The compressor in a S735 is inverter-controlled. The compressor’s power is adjusted according to the demand and routed to heating or hot water. If the power is not sufficient for the heating demand, additional heating is connected automatically.
S735 is supplied with a heating control system, which means that the heating supply to the house takes place according to selected settings. When connecting to a system with thermostats on all radiators (or underfloor heating coils), either a bypass valve must be fitted or some of the thermostats must be removed to ensure there is sufficient flow. For more information about heat production, see the Installer Manual.
S735 consists of a storage heater that is heated with a charge coil.
When there is demand for hot water, S735 prioritises this and switches to hot water mode. There is no heat production in this mode.
For more information about hot water production, see the manual for S735.
This function requires the ECS 40/41 accessory. Shunt valve, supply and return line sensors, as well as circulation pump, are connected to other heating circuits with a lower temperature demand (e.g. underfloor heating system). The temperature in the extra heating system follows the selected curve slope and offset setting. Up to 8 extra heating systems can be connected to the installation.
For further information, see the Installer Manual for the accessory.
See the valve’s manual for a port description.
With the AXC 20 accessory, an external heating medium pump can be connected to S735, if the alarm relay (the AUX output) is activated for another function.
The system should be supplemented with an extra water heater, if a large bath tub or other significant consumer of hot water is installed.
In houses with a large hot water demand, VPB S200 can be docked to NIBE S735. Docking kit DEW S42 is required.
For further information, see the Installer Manual for the accessory.
In houses with a large hot water demand, AHPH S eller AHPS S can be docked to NIBE S735. Docking kit DEW S43 is required.
Together with AHPS S, the accessory can also be used when docking with an external heat source, such as a water jacketed stove or a thermal solar installation.
For further information, see the Installer Manual for the accessory.
This function requires the NIBE PV accessory. NIBE PV is a complete modular system with solar panels in several basic outputs. NIBE PV is connected to S735, which adjusts to the generated solar electricity produced.
For further information, see the Installer Manual for the accessory.
NIBE SAM S42/S44 is a supply air module specially designed to combine recovery of mechanical exhaust air with preheated supply air together with the exhaust air pump NIBE S735.
The integrated fan in NIBE SAM S42/S44 takes the exhaust air and blows it out into the house via the supply air inlet. The supply air is warmed as needed.
For further information, see the Installer Manual for the accessory.
A circulation pump can be controlled by S735 to circulate the hot water. The circulating water must have a temperature that prevents bacterial growth and scalding, and national standards must be satisfied. See the appropriate Installer Manual for more information.
Designation |
Name |
Specification |
Part No. |
Comments |
---|---|---|---|---|
-EB100 |
Heat pump system |
NIBE S735 |
||
-EB100-BT1 |
Outside sensor |
Included in S735 |
||
-EB100-BT25 |
External supply temperature sensor |
|||
-EB100-GP10 |
External heating medium pump |
|||
XL |
XL connections |
|||
1 |
Heating medium connection, supply |
|||
2 |
Heating medium connection, return |
|||
3 |
Cold water connection |
|||
4 |
Hot water connection |
|||
5 |
Hot water circulation connection |
|||
8 |
Docking connection, supply (from heat pump) |
|||
9 |
Docking connection, return (to heat pump) |
|||
-AZ20_DWS |
Supply air module |
DWS S42 |
067 872 |
|
-AZ20_SAM |
Supply air module |
NIBE SAM S42/S44 |
067 794 / 067 795 |
|
-CP1_VPB |
Storage tank |
VPB S200 |
081 141 |
|
-CP1_VPBS |
Storage tank |
VPB S300 / VPBS S300 |
081 143 / 081 145 / 081 146 |
|
-CP1_AHP |
Storage tank |
AHPS S / AHPH S |
080 136 / 080 137 |
|
-CP4 |
Additional water heater |
|||
-WP5_S42 |
Docking kit DEW S42 |
067 796 |
||
-WP5-AA25_S42 |
AXC module |
Included in DEW S42 |
||
-WP5-BT6_S42 |
Controlling hot water sensor |
Included in DEW S42 |
||
-WP5-BT7_S42 |
Display hot water sensor |
Included in DEW S42 |
||
-WP5-FQ1_S42 |
Mixer valve, hot water |
Included in DEW S42 |
||
-WP5-QM35_S42 |
Shut-off valve, cold water |
Included in DEW S42 |
||
-WP5-QN28_S42 |
Reversing valve, hot water |
Included in DEW S42 |
||
-WP5-RM1_S42 |
Non-return valve |
Included in DEW S42 |
||
-WP5_S43 |
Docking kit DEW S43 |
067 800 |
||
-WP5-AA25_S43 |
AXC module |
Included in DEW S43 |
||
-WP5-BT6_S43 |
Controlling hot water sensor |
Included in DEW S43 |
||
-WP5-BT7_S43 |
Display hot water sensor |
Included in DEW S43 |
||
-WP5-FQ1_S43 |
Mixer valve, hot water |
Included in DEW S43 |
||
-WP5-QM35_S43 |
Shut-off valve, cold water |
Included in DEW S43 |
||
-WP5-QN28_S43 |
Reversing valve, hot water |
Included in DEW S43 |
||
-WP5-RM1_S43 |
Non-return valve |
Included in DEW S43 |
||
-EP21 |
Heat pump system 2 |
ECS 40/41 |
067 287 / 067 288 |
|
-EP21-AA25 |
AXC module |
Included in ECS 40/41 |
||
-EP21-BT2 |
Supply temperature sensor, heating system 2 |
Included in ECS 40/41 |
||
-EP21-BT3 |
Return line sensor, heating system 2 |
Included in ECS 40/41 |
||
-EP21-GP10 |
Circulation pump, heating system 2 |
Included in ECS 40/41 |
||
-EP21-QN25 |
Shunt valve, heating system 2 |
Included in ECS 40/41
See the valve’s manual for a port description. |
||
-GC1 |
Solar panels |
NIBE PV |
||
-QZ1 |
Hot water circulation (HWC) |
|||
-QZ1-FQ3 |
Mixer valve, HWC |
|||
-QZ1-GP11 |
Circulation pump, HWC |
|||
-QZ1-RM1 |
Non-return valve, HWC |
|||
-QZ1-RN1 |
Trim valve, HWC |
|||
-RM1 |
Miscellaneous |
|||
-RM1 |
Non-return valve |
Designations according to standard EN 81346-2.
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