10
Installing the boiler
(continued)
8
ADJUSTMENT
Choice of mode :
- Function without room thermostat bridge
S
remains in place.
-
Function with room thermostat remove bridge
S
, room thermo-
stat connected as shown on connector
D
(fig. 11).
The external control switches both burner and pump. The
external control switches the pump off after a delay of 3 min 30’
Choice of boiler operation :
In order to make these adjustment you will need to access the
front of the electrical box.
Isolate mains electrical supply to boiler.
Remove boiler outer casing.
Remove rubber cover
E
(fig. 12) on face of electrical box.
Adjustment on the PCB Central Heating Mode
(fig. 13) :
- P3 : potentiometer TAC (Temporisation Anti Cycle) may now
be adjusted between 30 seconds and 3 minutes (see
detail) (factory set at 3 minutes).
- JP3 : the spade connector (fig. 14) allows the gas rate to be
reduced to 1/3 performance by positionning spade across
pins as shown (fig. 14).
Full performance across pins as shown (fig. 14).
After completling adjustments replace rubber cover and refit
outer casing.
C10
C11
C38
F1
F1A
J1
J2
J5
MV1
R67
R72
R73
R75
R76
R85
P3
Fig. 13
Fig. 12
(P3-P4-P5)
mini
maxi
P3
Detail
P3
3/3
P3
1/3
J1
J2
S
Connector D
T.A.
main supply cable
Room thermostat
Fig. 11
C
E
B
Making the Electrical Connections:
Connect the live and neutral wires of the main cable. Note: The
connections should be made so that should the lead be pulled
from its anchorage, the current carrying wires become taut
before the earth wire.
If using a room thermostat or other external control, undo the
two retaining screws
B
, remove cover
C
(fig 12)
,
they can be
connected in place of the link on the multipin plug.
D
.
Connect multipin plug into the socket on the power board.
Replace the cover.
Fig. 14
Summary of Contents for Calydra Comfort 100 Nat
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