Hamworthy QAA73.210, Installation, Commissioning And Servicing Instructions

Page: 36 / 44

HAMWORTHY HEATING LTD QAA73.210
Programmable Room Unit
500001305/B
28
refer to appendix A at the rear of this manaul.
D.H.W. Cylinder sensor
This should be fitted to the cylinder using the pocket
provided on the cylinder to ensure accurate
temperature detection. Connection is directly to the
boiler at terminals ’ X10 - 05, D.H.W. cylinder sensor
QAL36 ’. Wiring should be completed using a 1.5mm²
twisted pair shielded cable, run separately to any
mains cables to prevent electrical interference.
Note: The cable supplied with the sensor may
require extending.
Features available with this system
•
7 Day time clock with 4 periods each day for
heating circuit
•
7 Day time clock with 4 periods each day for
hot water circuit
•
Auto summer/winter time change (BST to
GMT)
•
Holiday program
•
Frost protection for building
•
Frost protection for hot water cylinder
•
Reduced temperature (night setback)
•
Reduced hot water storage temperature (night
setback)
•
Weather compensation
•
Summer shutdown
•
Fault diagnostics with error code indication
•
Programmable lock to prevent tampering after
commissioning