Flexitemp Instructions - Euroheat

Euroheat Distributors 

(H.B.S.) Ltd., 

Unit 2, Court Farm 

Business Park, 

Bishops Frome, 

Worcestershire, 

WR6 5AY. 

Flexitemp Instructions 

BM and Toby 

Pass this Manual to the User After Installation 

© EUROHEAT DISTRIBUTORS (H.B.S) LTD. Nov. 2004 1 Operating Instructions Part number IN1051 Edition B

Oil Control 

Type 

B M 

C I 

TOBY 

Visual Identification 

Flexitemp 

Installation of Flexitemp and suggested uses. 

For System Centre 2 Installation see Stove and Boiler Management Systems Documentation 

Suitable Flexitemps for different Oil Control valves 

There are 3 types of oil control valves used on the Efel stoves. Use only the Flexitemp or System centre listed 

below for each type of oil control valve. 

Flexitemp 

Part Number 

Document 

Instruction 

Information 

Page 

© EUROHEAT DISTRIBUTORS (H.B.S) LTD. 2004 2 

Operating Instructions Part number IN1051 Edition B

The Flexitemp unit is an electrically operated device 

designed to control the stove’s heat output. It does so 

by holding the oil metering valve at its minimum setting 

when de-energized, and when energized allows the 

valve to deliver oil to the burner at any chosen setting. 

It operates by heating a coil around the actuating rod 

which then extends its length and causes the operating 

Because the Flexitemp allows the stove to be 

controlled by electrical switching devices, such as 

timers or thermostats, it can form the heart of many 

Two types of Flexitemp are available 

A) BM for BM & CI Oil Control Valves 

B) Toby for Toby oil Control Valves 

Electrical connection for simple mains failure or remote 

switching mechanism. 

1 2 3 4 

L N E 

240 Volts a.c 

Fused at 3 amps 

The Flexitemp Oil 

Valve Controller 

1 2 3 4 

N 240V L 

A) BM Flexitemp Part Number MS9036 Electrical Connection 

Electrical connection for remote thermostat control 

directly connected to Flexitemp 

© EUROHEAT DISTRIBUTORS (H.B.S) LTD. Nov. 2004 3 Operating Instructions Part number IN1051 Edition B 

1 

C 

1 2 3 4 

L N E 

240 Volts a.c 

Fused at 3 amps 

2

Installing the Flexitemp to BM and CI Oil Control 

The wiring of all electrical components fi tted to a stove should allow for the stove’s surface and radiated heat, 

no electrical wiring should be undertaken by anyone not suitably qualifi ed and conversant with any regulations, 

and necessary precautions applicable to the installation of the Flexitemp unit. All planned electrical connections 

should be installed prior to the attachment of the Flexitemp to the Oil Control valve. 

The stove must be cold and all electrical and fuel supplies should be isolated when fi tting any components to 

the stove. 

The three top-plate mounting screws which will be covered by the Flexitemp unit should be removed. The 

cover of the Flexitemp unit should be removed, placed over the valve so that the Flexitemp operating arm pad 

is concentric with the valve fi ring rate pin and the three holes in the Flexitemp body allow the top-plate screws 

to be refi tted, passing through, and securing the Flexitemp body. Ensure the valve control knob will not foul 

against the Flexitemp cover when replaced and that the auto/manual lever is set to automatic. 

Turn the valve to its minimum “on” position and adjust the Flexitemp low position limit screw to cause the 

operating arm pad to rest on, but not infl uence the valve fi ring rate pin. 

The Flexitemp and its control should be subjected to a full mechanical and electrical operation test. 

Note: 

See Flexitemp commissioning instructions to complete installation. 

CI Oil Control Valves 

remove low setting location 

clicker 

Valve fi ring rate pin 


Operating Instructions Part number IN1051 Edition B 

6 

OFF 

5 

Override 

1 

3 

Automatic 

Low position 

Limit screw

Commissioning the BM Flexitemp 

Once the installation has been completed the Flexitemp requires adjusting to correctly control the minimum 

oil flow rate when the Flexitemp is de-energized. 

The protruding control lever of the Flexitemp presses down on the valve firing rate pin. The degree to which 

this is pressed determines the flow rate to the burner. To correctly adjust the Flexitemp the appliance must be 

fully installed and normal stove commissioning completed. 

Two checks and possible adjustments need to be completed for correct operation. 

A 

Remove the coal effect from the appliance. 

Light the appliance as described in the operation 

instructions. 

Once the stove has reached operational temperature 

turn the main control knob to the number “1” 

position. 

The control to the Flexitemp must be calling for heat 

so that the Flexitemp control lever is not touching the 

valve firing rate pin. 

Observe the flame size. 

Remove the electrical power from the Flexitemp by 

switching off the connecting time clock or other control 

system. 

The Flexitemp control lever should now drop and press 

on to the Valve firing rate pin. 

The flame size should not change. If the flame reduces 

in size the Flexitemp control lever is pressing to greatly 

on the Valve firing pin. 

BM Flexitemp, Adjust the low position limit screw 

clockwise in small increments until the flame size 

returns to the originally observed size. 

B 

Once section “A” of Flexitemp commissioning has 

been completed section “B” checks that the Flexitemp 

control lever will reduce the oil flow rate to the number 

“1 “ setting and not for example to the number “2” oil 

control setting. 

With the Flexitemp de-energized turn the oil control 

knob to the number “4” setting. The flame size should 

not change. If The flame size increases the Flexitemp 

oil control lever is not pressing sufficiently on to the 

valve firing pin. 

BM Flexitemp, Turn the low position limit screw 

anticlockwise in small increments until the flame 

returns to the number “1” setting. 


FIG82A 

Minimum for low fire 

setting 

E x c e p t a b l e 

Flame Patterns 

Valve Firing Rate Pin 

Maximum for low 

fire setting 

Unacceptable Flame Pattern 

Caution after adjusting wait 3-4 minutes 

for the flame pattern to settle before 

continuing commissioning.

B) Toby Flexitemp Part Number MS10040 

Electrical oil valve control with the Flexitemp. 

1 2 3 4 5 6 

The Flexitemp allows the oil valve to be controlled automatically, and can be used to govern the firing rate of a 

stove with a boiler as illustrated in the two following drawings. High and low limit thermostats are incorporated 

to protect the boiler from condensation by not allowing it to run at too low a temperature and dissipating 

excess heat should the control thermostat fail. The high limit and control thermostat should be fitted at the 

boiler flow outlet and the low limit thermostat should be fitted to the boiler return inlet. All pipe thermostats 

must be fitted using heat conducting paste between the thermostat’s monitoring face and the pipe to ensure 

reliable thermal transmission. High temperature cables must be used to wire components in contact with or 

in close proximity to the stove. All wiring must be in accordance with whatever regulations may be applicable 

at the time of installation. 

Schematic electrical diagram for system with gravity D.H.W. and pumped space heating circuit. 

L 

N 

Pump 

1 

C 

90 C 

o 

2 1 

C 

2 

50 C 

o 

High Limit Low Limit 

Room 

Thermostat 

1 2 3 4 5 6 

Flexitemp unit. 

Control 

Thermostat 

Schematic electrical diagram for system with gravity D.H.W. and pumped space heating circuit, where no 

room thermostat is fitted. 

L 

N 

Pump 

1 

C 

90 C 

o 

2 1 

C 

2 

50 C 

o 




1 

C 

2 


1 

C 

2 

1 2 3 4 5 6 

Control 

Thermostat 

CH 

HW 

CH 

HW

Schematic electrical diagram for system with 

both D.H.W. and space heating circuit being 

pumped. 

N 

Pump 

1 

C 

90 C 

o 

2 1 

C 

2 

50 C 

o 


Room 1 2 3 4 5 6 

Thermostat 


Schematic electrical diagram for system with no boiler but where it is required to control 

stove’s heat output with a room thermostat and a time switch. 

N 

1 2 3 4 5 6 


Control by single Pipe thermostat to maintain control temperature 

N 


1 

C 

2 

1 2 3 4 5 6 

Control 

Thermostat 

Control 

Thermostat 


L 

1 

C 

2 

L 

HW

Installing the Flexitemp to Toby Valve 

Isolate all electrical supplies before working on the stove or its controls. 

1 

Loosen screw “A” and slide off 

terminal cover. 

3 4 

5 

C 

TO B Y 

D V R 

The Flexitemp is attached to the 

Toby valve with two screws. The screw 

passing through the Flexitemp body “B” is 

captive, the other, “C” is taken 

from the valve. 

TO B Y 

D VR 

+ 

+ 

_ 

B 

A 

+ 

_ 

Remove these two screws from the 

Toby valve, One screw “C” is reused 

to mount the Flexitemp unit. 

Mount Flexitemp using the captive screw “B” 

and the screw “C” in the hole shown. These should be 

screwed into the fixing points on the valve vacated by 

the two screws removed.. Note:- The Flexitemp is offset Ensure the Flexitemp sits flat on the 

when mounted. 

Valve body. Refit terminal cover. 



6 

2 

T O B Y 

D V R 

Wire in cable, or cables to Flexitemp unit, 

ensuring you are wiring to the correct 

terminals for your control system, and 

and the earth wires are connected to the 

earthing terminal of the metal body. 

Cables must be secured by the cable 

clamp tightened onto the outer sheaths. 

TO B Y 

D V R 

+ 

_ 

+ 

+ 

_ 

C

Commissioning and operation of the Toby Flexitemp 

The valve contains and controls a reservoir of oil, maintained at the height marked on the valve body. The 

delivery rate of the valve is governed by a slotted barrel at the valve’s exit being raised or lowered within a sleeve 

to expose more or less of this slot to the reservoir of oil. The position of the barrel is controlled by a cam, in 

the form of an adjustable track, attached to the control knob shaft. When the valve is in the “off “ position the 

track causes the barrel to be pushed down within the sleeve so that none of the slot is exposed and so no oil 

flows out from the valve. As the control knob turns from the “off” position to position “6” the track rotates over 

the barrel allowing the barrel to raise progressively to expose the full length of its slot. The final calibration of 

the valve’s flow rate is made by adjustment of the two screws holding the ends of the track, so that the height 

of the track and the position of the barrel, when the control knob is at position “1” and “6”, is determined. The 

barrel movement necessary to give the flow rates from low to high flow is approximately one mm. 

Above the flow regulating barrel is a pin, which protrudes through the valve cover plate, and it is this pin that 

the Flexitemp arm operates. When the Flexitemp unit is not energized the arm pushes down the pin and lowers 

the barrel to position ”1”. When energized, the Flexitemp arm lifts clear of the pin to allow the barrel to rise to 

whatever position is set on the control knob. The Flexitemp arm is actuated by heating an expanding metal 

rod which causes the arm to lift or lower very slowly, about three minutes. This slow operation allows more 

time for the flue draught to stabilize as the stove’s firing rate changes. 

Minimum flow rate 

adjustment screw 

T O B Y 

D V R 

+ 

+ 

_ 

_ 

+ 

+ 

_ 

Maximum flow rate 

adjustment screw 

Pin operated by Flexitemp 

If the Flexitemp arm does not lift 

clear of the pin when energized and 

the valve control setting is at “6”, 

the hexagon pad should be screwed 

higher into the operating arm. 

6 MM 

_ 

NOTE:- All valves are supplied precalibrated; 

if it is necessary 

to re-calibrate, all adjustments 

to the flow rate screws should 

be in increments of no more 

than a quarter turn at a time. 

Allow at least four minutes for stabilizing 

after each adjustment 

The pin is located within a tube nut If the Flexitemp 

pushes the pin to give a lower fuel rate than “position 

1” the nut should be turned 

anticlockwise to provide a higher stop for the Flexitemp. 

If the minimum flow setting has been adjusted, this 

adjustment will be necessary. 

© EUROHEAT DISTRIBUTORS (H.B.S) LTD. Nov. 2004 9 Operating Instructions Part number IN1051 Edition B

Flexitemp Instructions - Euroheat

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