Pressure Relief Valve; Circulation Pump; Water Flow - REMEHA GAS 210-80 ECO PRO Technical Information

5. Water-side connections
V
D
0 10 20
fig. 03 Output control characteristic
114492LTAL21H031
V = full load P = heat output
∆T = temperature difference
D = part load
14
It is important to check the inhibitor concentration after installa-
tion, system modifications, filling the system and every service in
accordance with these instructions.
For the correct dosage and the suitability of inhibitors for use with
our boilers and for further information on water treatment or sys-
tem cleaning we advise direct contact with either of the following
companies:
'Copal
Fernox, Cookson Electronics
Forsyth Road
Sheerwater
Woking
Surrey GU21 5RZ
Tel No: 01483 793200
Fax No: 01483 793201
Email: sales@fernox.com
Website: www.fernox.com
or:

5.1.3 Pressure relief valve

Install an pressure relief valve in the system, in accordance with
NEN 3028, between any valves and the boiler and in the flow pipe
within 0.5 m of the boiler.

5.1.4 Circulation pump

The boiler is equipped with a pump switch to connect an external
circulation pump. This pump is run once every 24 hours to prevent
sticking (24 hour pump operation). Only on/of f pumps can be con-
trolled. For connections, see Section 8.3.6.
The hydraulic resistance for the various output options of the
boiler is as follows:
Boiler type
210-80
210-120
210-160
35
210-200
30 40
ΔT (°C)

5.1.5 Water flow

114492LTAL21H031
The maximum temperature difference between flow and return,
and the maximum rate of rise of the flow temperature and boiler
block temperature are limited by the boiler's modulating controls.
As a result, the boiler is virtually unaf fected by low water flow.
However for a continuous supply of heat, the boiler requires a
minimum flow of 30 % of the nominal flow at the relevant design
temperatures.
' manufactured by:
®
Hydraulic resistance at
a dT of 20°C
mbar kPa
165 16,5
135 13,5
170 17,0
180 18,0
GAS 210 ECO PRO
Sentinal 'X100 ' manufactured by:
®
Sentinel Performance Solutions
The Heath Business & Technical
Park
Runcorn
Cheshire,
WA7 4QX
Tel No: 0800 389 4670
Fax No: 0800 389 4677
Email: info.uk@sentinel-solutions.net
Website: www.sentinel-solutions.net
Hydraulic resistance at a dT
of 10°C
mbar
545
446
562
595
114494-190310
kPa
54,5
44,6
56,2
59,5