Technical data

© MHS Boilers Ltd
221106 Draft Copy E&OE
29
[#] Description Range 150 & 225
Standalone
150 & 225
Master
Cascade
8 Pump Run On Time
System Heating (HKP) and HWS (SLP) Pumps
0-20 3 3
22 Minimum System Return Temperature 8-95 8 8
30 Room Influence Gain Factor 0-20 4 4
32 Boost Room Temperature Set Point
Room Sensor Dependant (QAA10/50/70)
Increase. Heat Up Time Reduced
Decrease Heat Up Time Increased
0-20 5 5
33 Frost Protection
0. Frost Protection Program Disabled
1. Frost Protection Program Enabled
0-1 1 1
35 Heat Gains
Increase. If Heat Gains are High
Decrease. If Heat Gains are Low
-2-+4 0 0
36 Adaptation Sensitivity 1
Outside Air Range 4-12
0
C
1-15 15 15
37 Adaptation Sensitivity 2
Outside Air Range <4
0
C
1-15 15 15
40 Maximum HWS Set Point 8-80 60 60
41 HWS Switching Differential (QAZ21 Sensor Only) 0-20 5 5
42 Legionella Function 0. Off 1. On. 0-1 0 0
50 Cascade Strategy
1-3 Automatic
4-6. Fixed
1-6 3 3
51 Minimum % Output reached Prior to Switching Off a
Module In the Cascade
5-100 20 20
52 Maximum % Output Reached Prior to Switching On a
Module In The Cascade
5-100 85 85
56 Time Spent By Module On Ignition Rate Prior to
Modulation (Delay Time Between Modules)
0-1200 0 0
60 Minimum Temperature Difference Between Flow/
Return Sensor Readings Prior to The Return Sensor
Becoming Lead
0-20 2 2
90 Display Default
0. Time of Day
1. System Flow Temperature (CA)
1 1
91 Software Version 00.0-99.9 # #
92 RVA47 Manager Operating Hours 0-500,000 -- --