Additional Generator (Boiler Connection) - Fujitsu WSYA050ML3 Design & Technical Manual

3-11. Additional generator (Boiler connection)

Line Access
3692 S With DHW charging
• DHW instantly: When DHW request, the HP and the boiler are put into operation. The HP will
stop when the primary return temperature is over 55°C.
• DHW substitute: If the outdoor temperature is above 2°C, the operation of the HP when DHW
request last 5 minutes at least. The HP operating time can be extended depending on the
outdoor temperature. The boiler will active then.
Release below outside
3700 S
temperature
Release above outside
3701 S
temperature
3705 S Overrun time
Switching integral (for boiler
3720 S
relief)
3723 S Locking time
A supplementary producer can be operated in addition to the main producer (heat pump). Release of
the supplementary producer depends on a number of parameters a detailed description of which is
given on the followings.
• Release is effected via release relay Qx2
• 2-position control is effected via control relay Qx3
• Ux can be used to transmit the supplementary source a DC 0...10 V signal for the required tem-
perature/output setpoint.
Line
3692
Defines the release of the supplementary source for DHW charging:
• Locked
The supplementary source will not be released.
• Substitute
The supplementary source is released only if the main source cannot be put into operation (e.g. in
the event of fault).
• Complement
The supplementary producer is released if the output of the main producer is not sufficient.
• Instantly
The supplementary source will always be released.
Line
3700
3701
Operation of supplementary source is released only when the composite outside temperature lies
above or below the set temperature limitation. This enables the supplementary source to lock in a
selected outside temperature range to ensure bivalent operation of supplementary source and heat
pump. To ensure continuous release of the supplementary source, setting "---" must be selected on
the respective operating lines. If both release values are enabled, the outside temperature must sat-
isfy both criteria, thus ensuring release of the supplementary source.
3-11. Additional generator (Boiler connection)
Function Setting range or display
Locked
Substitute
Complement
Instantly
-50...50°C
-50...50°C
0...120 minutes
0...500°Cmin
1...120 minutes
With DHW charging
Release below outside temperature
Release above outside temperature
- (03-41) -
Setting
increment
Substitute
1°C 2°C
1°C ---
1 minute 20 minutes
1°Cmin 100°Cmin
1 minute 30 minutes
Function
Function
Factory
setting
3. Function table