connection, and replace burner.
Set the boiler thermostat to between Summer and Winter positions, see Fig 1.
Switch on the electric supply to the boiler, checking that programmes are switched to the 'ON' position,
and that room thermostats are calling for heat.
Check the Smoke No., if clean wait 10 minutes and measure C02.
Adjust the air shutter if necessary, open to reduce C02, close to increase C02.
If the shutter is adjusted, re-check the Smoke No.
Check the flue gas temperature. The figures should agree with the Boiler Commissioning Data.
Check lockout function, either cover the photocell or remove solenoid coil, to simulate flame failure.
Reinstate components and press lockout button.
Check the operation of the limit thermostat.
Complete commissioning report and enter the details on to the guarantee form which should be returned
to BOULTER BUDERUS in the envelope provided.
Instruct the user on the operation of the appliance and leave this manual with the customer.
When the burner motor starts, on one pipe systems it may be necessary to temporarily open the air bleed
screw on the test manifold.
If the burner locks out during the ignition attempt, wait 45 seconds before pressing the reset button on the
control box. Several attempts on first firing may be necessary.
Once the burner is firing check and if necessary adjust the oil pressure.
Page 32
7:9.2 COMMISSIONING TEST - SYSTEM
Isolate boiler electricity.
Check cold mains static and dynamic water pressures and record in spaces provided on page 2.
Open largest HOT water tap (Usually the Bath tap) and check flow rate using a flow measuring device
such as a Combi cup or a stop watch and measuring container.
Locate farthest HOT tap from appliance and check the flow has not dropped below the pre-set flow rate of
16 1 /min.
Reinstate electrical supply, test boiler in summer mode.
Adjust hot water control thermostat to maximum position, the tank heat up indicator should be illuminated
until it reaches temperature.
Turn bath hot tap on to demand HOT water (draw a normal bath full : 15-20 gallons), the flow indicator
should be illuminated (providing the flow switch) this is extinguished once demand ceases. Check the bath
water temperature at end of demand, (approximate temperature rise should be forty Degrees Centigrade
above cold mains supply temperature - normally approximately 10°C).
Allow boiler and tank to reach temperature again and switch to winter mode, adjust boiler control
thermostat to maximum and repeat the last instruction.
Continue with normal system checks.
Section 8 - Maintenance
8:1 GENERAL
Page 43 of 57
Installation & maintenance manual for Camray 5 Combi External Boilers
14/04/2005
file://D:\PL61500\PL61500.htm
