Technical data

© MHG Heating Ltd
56
MHG Heating Ltd Unit 4 Epsom Downs Metro Centre, Waterfield, Tadworth, Surrey KT20 5LR
Telephone [phone] Fax [phone] Email [e-mail]
Web www.mhgheating.co.uk
010109
[#]
Description Range Defaults
End User Level
1 Time of Day 00:00-24:00 As Required
2 Weekday 1-7 As Required
3 Date 00:00 As Required
4 Year 1900-3000 As Required
5 Day of Week
1.7 1.5 6.7 1-7
As Required
6 Heating Time Switch 1st On Time 00:00-24:00 06:00
7 Heating Time Switch 1st Off Time 00:00-24:00 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
14 Heating Night Setback Temperature 10-30 16
15 Frost Protect Temperature 4-15 10
16 Summer/Winter Changeover Temperature 8-30 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
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
30 Hot Water Time Switch 1st On Time 00:00-24:00 06:00
31 Hot Water Time Switch 1st Off Time 00:00-24:00 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
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