22
INSTALLER
Before commissioning, ensure that the whole gas installation is purged and tested
for soundness.
IMPORTANT: To prevent damage to the gas valve soundness testing of the system
must only be done with the isolation cock on the heater in the closed position. Any
over pressure such as is allowable to carry out a pipe soundness test could
possibly damage the heater.
14.1- SETTINGS
Before leaving the factory the heater is pre-set in accordance with the information
on the data plate. No adjustment is necessary and under no circumstances should
any of the seals be broken.
14.2- GAS CIRCUIT
Turn on the gas supply and check for leaks downstream of the isolation cock using
leak detector spray.
14.3- WATER CIRCUIT
Turn on the water supply and check for leaks.
14.4- INITIAL OPERATION
Operate the heater as per the instructions in section 2 and 3 of this manual.
14.5- FINAL CHECKS
Re-light and test for gas soundness
Carry out an operating gas pressure test to ensure maximum potential
performance.
14.6- USERS INSTRUCTIONS
Upon completion of testing the system the installer should:
– Give the instructions to the user and explain how the heater works.
– Demonstrate the operation of the heater.
– Explain the LOCKOUT and how to re-set.
– Stress the importance of an annual service by a qualified and competent ser-
vice engineer.
– Explain to the user how to proceed in case of freezing cold weather (drain
down the water circuit, turn off the gas and electrical supply).
Explain the precautions to be taken to avoid frost damage
14.- COMMISSIONING INSTRUCTIONS
