Technical data

© MHS Boilers Ltd
221106 Draft Copy E&OE
25
[#] Description Range 150 & 225
Standalone
150 & 225
Master
Cascade
End User Level
1 Time of Day 00:00-24:00 As Required As Required
2 Weekday 1-7 As Required As Required
3 Date 00:00 As Required As Required
4 Year 1900-3000 As Required As Required
5 Day of Week
1.7 1.5 6.7 1-7
As Required As Required
6 Heating Time Switch 1st On Time 00:00-24:00 06:00 06:00
7 Heating Time Switch 1st Off Time 00:00-24:00 22:00 22:00
8 Heating Time Switch 2nd On Time 00:00-24:00 - -
9 Heating Time Switch 2nd Off Time 00:00-24:00 - -
10 Heating Time Switch 3rd On Time 00:00-24:00 - -
11 Heating Time Switch 3rd Off Time 00:00-24:00 - -
13 Required HWS Temperature 40-60 55 55
14 Heating Night Setback Temperature 10-30 16 16
15 Frost Protect Temperature 4-15 10 10
16 Summer/Winter Changeover Temperature 8-30 30 30
17 Weather Compensation Curve.
If a 0-10 volt signal is the required heat generation
control method for the RVA47 / boiler installation this
setting must be adjusted to -- on all RVA47s present in
the boiler cascade installation. This will result in the
Auto, On/Off and Frost lights becoming inactive.
Alteration to parameter #170 and #172 will also be
required.
0-40 32 32
18 Actual Room Temperature 0-50 -- --
19 Actual Outside Temperature
(Pressing the + & - buttons simultaneously until the
display stops flashing will reset the averaged value.)
-50-+50 -- --
23 Restore User Level Factory Presets 0-1 0 0
30 Hot Water Time Switch 1st On Time 00:00-24:00 06:00 06:00
31 Hot Water Time Switch 1st Off Time 00:00-24:00 22:00 22:00
32 Hot Water Time Switch 2nd On Time 00:00-24:00 - -
33 Hot Water Time Switch 2nd Off Time 00:00-24:00 - -
34 Hot Water Time Switch 3rd On Time 00:00-24:00 - -
35 Hot Water Time Switch 3rd Off Time 00:00-24:00 - -
50 Fault Code Display 0-255 -- --
Engineer Level
51 Output Test
0. Automatic control
1. All outputs off
2. HWS pump/valve on
3. Circulating pump on
0-3 0 0
52 Input Test
0. Return Temperature
1. HWS Temperature
2. Flow Temperature
3. Outside Temperature
4. Room Temperature
5. 0-10 Volt Required Temperature
0-5 0 0
53 Plant Type 0-100 -- --