Supplied By www.heating spares.co Tel. 0161 620 6677
5 Boiler Installation Sequence
Instructions for Installation and Servicing turboMAX plus and thermoCOMPACT R1
24
5.19 Thermostatic radiator valves
The boiler has a built in automatic bypass valve making
it ideal for use in systems with thermostatic radiator
valves (no separate system bypass is required).
For optimum fuel economy it is recommended that
where TRV’s are used they are used in conjunction with
a programmable room thermostat or separate timer and
room thermostat to ensure complete boiler shut down
when the heating demand is satisfied. (The radiator in
the room containing the room thermostat should not be
fitted with a TRV).
5.20 Frost protection
The boiler has an integral frost thermostat which is
designed for protection of the boiler.To protect remote
or exposed parts of the heating system or property
additional frost protection measures must be taken such
as the installation of an external frost thermostat. This
frost thermostat should be connected across the boiler
terminals 3 and 4, in parallel with any external heating
controls. External frost protection cannot be used when
plug in timers have been fitted.
5.21 Circulating pump
The boiler incorporates a built in circulating pump that
is fully prewired (no additional wiring is necessary). The
pump incorporates an automatic overrun period after
the boiler switches off.
5.22 Anti-cycling ‘economiser’ control
The boiler incorporates a built in anti-cycling control to
ensure that energy wasteful short cycling of the boiler
cannot occur. This control prevents the boiler from re-
igniting for a preset period of 5 minutes after central
heating operation (the hot water operation is unaffected
by this control and hot water can be drawn at any time).
Note!
To temporarily override the anti-cycling control
turn the main boiler on/off switch to the off
position “0“ and then back to the on position
“I“ after a few seconds.
Automatic pump spin control (APS)
The boiler incorporates a built in control which will spin
the built in circulating pump and operate the diverter
valve (turboMAX only) once in a 24 hour period. This
control helps to prevent seizure when the boiler is not
operated for a period of time. This control is not active
when the power supply to the appliance is turned off.
Fig. 5.19
Key:
X
Central heating on
Y
Hot water on
Z
Hot water off
Connection details for control systems utilising 2 x 2 port motorised valves
via external wiring centre/junction box
Diagram only applies to the specific controls mentioned
L
N
L
N
3
4
5
N
L
X** Y** Z**
3 amp fused
main supply
THERMOcompact
terminal strip
Programmer
for programmer connections see fig. 16.d
L
N
L
N
3
4
5
5
3
6
7
8
External wiring centre/junction box*
3
4
5
6
7
8
9
10
N N L L
*Do not use pre-wired printed circuit board type
not used
EARTH
BLUE
BROWN
GREY
ORANGE
Hot water 2 port motorised valve
4
E
5
3
10
E
C
A
N
4
N
4
2
4
4
3
3
3
3
3
2
2
2
2
1
1
L
2
1
L
1
1
1
1
3
C
B
E
E
E
E
Vaillant VRT 9090
ACL Drayton Digistat 2, 3, 4
ACL Drayton RTS 1, 2
Danfoss Randall RX-1
Danfoss Randall RMT 230
Danfoss Randall RET 230
Tower SS
Honeywell T6360
Horstmann HRT 1
Siemens-Landys & Staefa RAD 1
Sunvic TLX 2000 series
5
9
6
L
N
E
Room thermostat
2
1
C
YL
3
3
2
2
BK
1
2
2
1
1
RED
C
1
1
3
ACL Drayton HTS3
Danfoss Randall ATC
Tower CS1
Honeywell L641
Horstmann HTC1
Siemens-Landis & Staefa RAM 1
Sunvic SA 2452
10 7
E
Cylinder thermostat
3
E
2
E
E
EARTH
BLUE
BROWN
GREY
ORANGE
Central heating 2 port motorised valve
4
E
5
3
9
** see key below
Fig. 5.20
N
L
2
3
4
5
3
not used
7
6
1
not used
Lifestyle LP241, LP 522, LP 722
Tempus 6, Tempus 7
Danfoss Randall CP 715, FP715
Note:
*Earth not required
Danfoss Randall Set 2E, Set 3E
Note:
*Earth not required,
Link L - 2 - 5
Grässlin Towerchron QE2
Honeywell ST699B, ST799A
Note:
Link L - 5 - 8
Honeywell ST6200, ST6300, ST6400
Horstmann Channel Plus H21, H27
Note:
*Earth not required,
Link L - 2 - 5
Siemens-Landis & Staefa RWB2, RWB9
Potterton Myson EP 2002, EP 3002, EP 6002
Note:
Link L - 5
Sunvic Select 207
N
L
2
3
4
5
3
not used
7
6
1
not used
N
L
2
3
4
5
3
not used
7
6
1
E
5
not used
N
L
2
3
4
5
3
7
6
1
E
not used
not used
N
L
2
3
4
5
3
7
6
1
not used
E
*
not used
N
L
2
3
4
5
3
7
6
1
E
*
not used
5
6
not used
N
L
2
3
4
5
3
7
6
1
not used
not used
N
3
5
6
7
5
6
not used
7
4
L
3
8
not used
N
L
2
3
4
5
3
7
6
1
not used
not used
N
L
2
3
4
5
3
7
6
1
E
*
not used
5
6
not used
N
L
2
3
4
5
3
7
6
1
not used
not used
