Modulation Start Point At Dt (H); Minimum Water Pressure (I); Adjustments Options/ Accessories (J); Low" Speed With H/L Control (L) - REMEHA Gas 310 ECO Technical Information

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Important!!
If the factory setting is reduced, a
corresponding reduction in flow setpoint will be required
otherwise the min flow rate may be effected.

13.2.11 Modulation start point at dT (H)

Parameter H, adjustable between 10 and 30°.
This value sets the flow/ return dT point at which the
control modulation begins. The boiler starts to modu-
late at the setpoint and will be at minimum output if the
dT continues to rise to 40°. At 45° the boiler will shut
(shut-off code b #)). For installations with low flow
rates the starting point modulation can be brought for-
ward (i.e. 15°), closer matching boiler output to system
demand. In systems with small volume flows the modu-
lation start point can be brought forward. The boiler is
better equipped to anticipate low heat demand.
The factory setpoint should be correct for most instal-
lations. The start point should only be changed if abso-
lutely necessary.

13.2.12 Minimum water pressure (I)

Parameter I, adjustable between 0 and 6 bar.
This setting only applies if an optional hydraulic pres-
sure sensor has been connected.
This value sets the point at which the boiler will shut-
down if the system pressure falls below it. The boiler will
resume normal operation when pressure is restored.

13.2.13 Adjustments options/ accessories (J)

Parameter J, adjustable between 0 and 15.
This setting is only applicable if options from table 20
are connected to the boiler. The control unit detects
which options have been connected by means of the
value of this parameter and adjusts the boiler control on
this basis.
The required feedback message (as output in % or
as temperature in °) can also be selected here if the
(standard) analog output is used. A list of values that
have been assigned to specific options can be found in
table 20. Adding together the values of the options used
gives the parameter J.
Options
Hydraulic pressure sensor
Analog output:
Heat output (%)
Temperature (°)
Gas leakage control VPS
Parameter J:
table 20 Adjustments options/accessories
Supplied By www.heating spares.co Tel. 0161 620 6677
Value Sum
1
0
4
8
...
44
Remeha Gas 310 ECO
Examples:
- Factory setting is 0: the analog output will be in %.
- Water pressure sensor (1) and valve leak proving
system (8) options are connected: parameter J is
set to (1) + (8) = 09.

13.2.14 "Low" speed with H/L control (L)

Parameter L, adjustable between 10 and 60 (x 100)
rpm.
This setting only applies if the boiler is in High/Low con-
trol mode (parameter A = 21).

13.2.15 Boiler type (P)

This code appears only when replacing the control unit.
After placing the new control unit, code P05 appears
automatically in the display. The value 05 must be
changed in to the correct value for your boiler type (see
mounting-instructions of the service unit).