103
19. Ensure supply gas pressure is correct. Refer to
on page 29.
20. BEFORE OPERATING, smell all around the appliance area for gas. Be sure to smell near the floor
because some gases are heavier than air and will settle on the floor.
WHAT TO DO IF YOU SMELL GAS?
•
DO NOT TRY TO LIGHT ANY GAS APPLIANCE.
•
DO NOT TOUCH OR OPERATE ANY ELECTRICAL SWITCH.
•
TURN OFF THE GAS SUPPLY AT THE GAS METER OR ISOLATION VALVE.
•
DO NOT USE A MOBILE PHONE IN THE VICINITY. VACATE THE AREA AND CALL YOUR
GAS SUPPLIER OR QUALIFIED GAS FITTER.
•
IF YOU CANNOT REACH YOUR GAS SUPPLIER, CALL 000.
•
USE ONLY YOUR HAND TO TURN THE GAS CONTROL VALVE HANDLE. NEVER USE
TOOLS. IF THE HANDLE WILL NOT TURN BY HAND, DO NOT TRY TO REPAIR IT; CALL A
QUALIFIED SERVICE TECHNICIAN. FORCED OR ATTEMPTED REPAIR MAY RESULT IN A
FIRE OR EXPLOSION.
•
DO NOT USE THIS APPLIANCE IF ANY PART HAS BEEN UNDER WATER, IMMEDIATELY
CALL A QUALIFIED SERVICE TECHNICIAN TO INSPECT THE APPLIANCE AND TO
REPLACE ANY PART OF THE CONTROL SYSTEM AND ANY GAS CONTROL WHICH HAS
BEEN UNDER WATER.
•
CHECK AROUND UNIT FOR DEBRIS AND REMOVE COMBUSTIBLE PRODUCTS, I.E.
PETROL, ETC.
21. If the installation is for a closed loop water source heat pump, perform the
Source Heat Pump Commissioning Procedure”
on page 103.
22. Upon completion of the installation and commissioning of the water heater, leave this guide with the
responsible officer.
DO NOT
leave this guide inside of the cover of the water heater, as it may
interfere with the safe operation of the water heater or ignite when the water heater is turned on.
CLOSED LOOP WATER SOURCE HEAT PUMP COMMISSIONING PROCEDURE
Refer to Fig 52for the location of components described in this procedure.
1. Check that both isolation valves are open.
2. Adjust balancing valve
A
to half open and balancing valve
B
to fully open.
3. Start up the water heater and after the water heater has been running for some time adjust
balancing valve
A
to obtain a heater inlet temperature of approximately 10°C greater than the
system loop return temperature, (turning valve
A
in the open direction will increase the heater inlet
temperature and closing valve
A
will lower the heater inlet temperature).
NOTE:
The heater inlet
should never be less than 44°C.
4. If the heater inlet temperature remains less than 10°C higher than the system loop return
temperature and valve
A
is fully open, leave valve
A
fully open and throttle valve
B
until the heater
inlet temperature rises to be 10°C higher than the system loop return temperature.
5. Main loop and heater temperatures should be checked regularly throughout the season to prevent
condensation forming in the water heater. If the balancing valves are adjusted at the coldest loop
temperature (typically 10°C) and the heater temperature to 44°C then the entire heating season
should have a proper 44°C operation. The heater inlet temperature can be higher than 44°C
without heater damage, but operating at less than 44°C inlet can cause damage from
condensation.
