HANDLING MANUAL
SERVICE MANUAL
RAYPAK HI DELTA BOILERS/WATER HEATERS
WITH FAN ASSISTED PREMIX BURNERS
3
3.6.
FLOW RATE DEMANDS FOR HEATING APPLICATIONS
35
3.6.1.
Freeze protection for outdoor boilers
36
3.7.
FLOW RATE DEMANDS FOR DIRECT HEATING OF DOMESTIC HOT
WATER
36
3.8.
GAS SUPPLY
37
3.8.1.
Maximum gas supply pressure
37
3.8.2.
Gas supply connection, reversing the side of the gas connection on site of
the installation
37
3.9.
POWER SUPPLY
38
3.9.1.
External thermostat or stage-controller via voltage-free contacts
39
3.9.2.
Pump control via 230V 50Hz output
40
3.9.3.
Enabling/disabling of the operation via voltage-free contacts
40
3.9.4.
Collected error signal via 24V 50Hz output
40
3.9.5.
External low water cut-off switch via voltage-free contacts
40
3.9.6.
External flue gas damper and fan control
40
4.
TO THE ATTENTION OF THE SERVICE
41
4.1.
TOOLS NEEDED
41
4.2.
ELECTRICAL CONNECTION OF THE APPLIANCE
42
4.2.1.
Wiring diagrams
42
4.2.2.
Connecting the mains power supply
47
4.2.3.
Connecting the pump control
48
4.2.4.
Connecting an external thermostat or burner stage controller
48
4.2.5.
Connecting the enabling/disabling of operation
50
4.2.6.
Connecting collected alarm
50
4.2.7.
Connecting external low water cut-off switch
51
4.2.8.
Connecting external flue gas damper and fan control
51
4.2.9.
Operation of the hot surface ignition system
52
4.2.10. Operation of the inner control panel, meaning of the control lights
54
4.2.11. Operation of the time delay relays, meaning of the control lights
56
4.2.12. Operation of the pump control relay, meaning of the control lights
56
4.3.
FIRST STARTING OF THE APPLIANCE
57
4.3.1.
Checking the gas supply pressure
57
4.3.2.
Blower adjustment
58
4.3.3.
Burner gas pressure adjustment
59
4.3.4.
Safety inspections
60
4.3.5.
Flame cut-out test
61
4.3.6.
Final check of the operating appliance
62
4.4.
CONVERTION TO ANOTHER TYPE OF GAS
63
4.5.
ASSEMBLY AND CLEANING OF THE HEAT EXCHANGER
64
4.6.
PERIODIC MAINTENANCE TO BE CARRIED OUT BY THE SERVICE
66