Keston C36 Installation Manual download pdf (Page 32)

5.9 TIMING THE GAS METER

Set the boiler DHW temperature to 65C and open two hot taps in the property fully. With

no other appliances using gas, time the gas meter to be certain that the unit is running at

the proper gas input. Determine the cubic feet of gas passing through the meter and

determine the input in Btu per hour. Input must be within plus or minus 5% of the rated

input.

Time, in seconds, the time taken to pass 2 cubic feet of gas through the meter (i.e. one

revolution of a 2 cu ft dial) or 0.1 cubic metres if the meter is of the new metric digital type.

Model Time for 2 cu ft Time for 0.1 cu m

C36 Combi (natural gas) 54 95

C36P Combi (LPG) 141 249

If the meter timing is found to be incorrect when the boiler is firing at maximum rate

contact KESTON Heating for further guidance.

5.10 HANDING OVER TO THE USER

It is important to fully explain the following:

a. Procedure to light and turn off the boiler, including isolation of the electrical supply

if necessary.

b. The function of the lockout feature must be explained :

If the display shows “E 01” this means that the boiler has failed to light. Press the

“Reset” button and wait.

i) If lockout recurs immediately then the gas supply should be checked as

ON, otherwise consult a Service Engineer.

ii) If it is not possible to relight, the boiler must be isolated and a Service

Engineer called in to rectify the fault.

c. Advise that a reduction in the water pressure reading on the system pressure

gauge, for sealed systems, indicates a leak which should be rectified before

further use.

d. Advise that the appliance should be serviced by a competent person at least once

a year.

Complete all sections of the Chapter 10 Gas Boiler Commissioning Checklist that are

relevant to the appliance installation. The details will be required in the event of any

warranty work.

e. Advise on the frost protection and pump/fan exercise feature.

f. Advise the user that a plume of water vapour (steam) from the flue terminal is

normal and that there is no need for concern.

WD388/0/2004 Chapter 5 : Commissioning The Keston C36 Combi & C36P Combi Boilers

Installation & Servicing Instructions Page : 27

1 2 ... 27 28 29 30 31 32 33 34 35 36 37 ... 56 57

No comments

Keston C36 Installation Manual Page 32