B1 Ventilation - Toshiba HWS-G1901CNMR-E Service Manual

Domestic Hot Water Heat Pump
Heat pump operation (Optimal 1 and Optimal 2)
 If the water temperature is below set point temperature minus hysteresis, the HP starts its operation
(normally at 00:00).
 Optimal 1: The HP is allowed to run also during the day(according to MODE of operation
 Optimal 2: The HP is always allowed to run in the night period(between00:00 and 5:00) plus it is
allowed to run in the periods described by D17/D18 (Low tariff period weekday/weekend)
7.9

B1 Ventilation

This mode is used for the ventilation of air from a room and distributed either into the DHW-HP
room location or ducted outside of the building.
Using the function B1 (Ventilation) the DHW-HP can be set to 3 operation modes, Off, single
speed or 2 speed
To complete the ventilation mode setup B2 (Ventilation Fan Speed) can be set.
Set point
Code Description
name
Ventilation
The fan switches off when the heat pump does not run.
OFF
Single
The fan is always running at a single fixed speed (B2 Fan speed), both
speed
when the heat pump is operating and when it is not.
B1
The fan is always in operation but it runs normally at a higher speed D6
(Fan AUTO Speed) when the heat pump starts operating and at (B2 Fan
2 Speeds
speed) when it is not operating.
The main fan speed regulation for the ventilation function. There are
three ventilation level that can be selected: LOW D5 (Min Fan Speed),
B2 Fan speed
MEDIUM D4 (Fan medium speed) HIGH D3 (Max fan speed).
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Service Manual
Factory
Range
setting
OFF/
Single
OFF
Speed/
2Speeds
LOW/
MEDIUM/
HIGH
HIGH