FOGATTI FDG370IN Manual de usuario
TANKLESS GAS HOT WATER HEATER
FEATURING
• ENDLESS HOT WATER
• ON-DEMAND USAGE
• COMPACT, SPACE SAVING
• ENERGY CONSERVATION
• COMPUTERIZED SAFETY
MODEL
FDG370IN
FDG420IN
Installation Manual and Owner's Guide
— Do not store or use gasoline or other flammable vapors
and liquids in the vicinity of this or any other appliance.
— WHAT TO DO IF YOU SMELL GAS
● Do not try to light any appliance.
● Do not touch any electrical switch; do not use any phone within
your building.
● Immediately call your gas supplier from a neighbor’s phone. Follow
the gas supplier’s installation.
● If you cannot reach to your gas supplier, call the fire department.
— Installation and service must be performed by a qualified
installer, service agency or the gas supplier.
WARNING:
Please place this manual in the water heater accessory for
reference whenmaintenance, adjustment or repair is required.
If you have any questions, please call or write to :
service@fogatti.com.cn
Tel.: +1(305)998-1595
Tankless Gas Hot Water Heater Installation Manual
If the information in these instructons is not
followed exactly, a fire or explosion mayresult
in property damage, personal injury or death.
02
1. Specification..................................
2. Introduction...................................
3. Safety Guide..................................
3.1 Security Definition...................
3.2 General....................................
4. Installation Instructions.................
4.1 General....................................
4.2 Installation Space....................
4.3 Installation Warning................
4.4 Typical Installation...................
4.5 Exhaust Pipe Specifications......
5. Venting Instructions.......................
6. Vent Termination Clearances.............
7. Combustion Air Supply......................
8. Gas And Gas Pipeline Specifications
9. Gas Connection..............................
10. Water Connection.........................
11. Pressure Reducing Valve...............
12. Electrical Connections..................
13. Initial Test Run..............................
5.1 General.....................................
8.1 General....................................
Contents
05
07
09
28
29
30
30
31
32
21
23
27
27
10
10
14
15
17
18
19
19
09
09
Owner'sGuide
14. Operational Safety....................
15. Operational Instructions...........
15.1 Built-in Controller..............
15.2 Controller Thermometer....
16. Troubleshooting........................
17. Maintenance.............................
18. Antifreeze System.....................
19. Gas pressure test position.........
20. Component Diagram.................
21. Wiring Diagram.........................
22. Packing List...............................
23. Warranty Notice........................
35
37
37
37
39
44
45
45
46
48
49
49
Installation Manual
11.1 Maintenance..........................
Tankless Gas Hot Water Heater Installation Manual
03
Congratulations and thank you for choosing
our tankless water heater. Before use, please
read this manual carefully and thoroughly .
Keep this manual for future reference. If you
need an additional manual, contact the
manufacturer or your local distributor. When
you call, please tell us the product name and
the serial number of your unit written on the
rating plate of the water heater.
Installation Manual
CONGRATULATIONS
Tankless Gas Hot Water Heater Installation Manual 04
Specification
MODEL
Natural Gas
Input(Operating Range)
BTU/h
PropaneInput(Operating
Range)BTU/h
Min:27,000
Max:145,000
Min:30,000
Max:170,000
Min:24,000M
Max:145,000
Min:24,000M
Max:170,000
15-150 (0.1-1)
3/4"NPT
3/4"NPT
psi(MPa)
"W.C.(kPa)Min 3.5 (0.87) Max. 10.5(2.61)
"W.C.(kPa)Min 8.0 (1.99) Max. 13.0(3.23)
lbs.(kg)40.8(18.5)
inch H 26.2 x W 17.1 x D7.3
H 665 x W 435 x D185
mm
Gas Connection
WaterConnections
Water Pressure*
Natural gas InletPressure
Propane InletPressure
Netweight
Dimensions
Ignition
Freeze-Protection
Electric Ignition
Electric
Supply VAC / Hz 120 /60
Consumption
Ratedpower W /A 43/0.6
Standby W /A 2/0.15
W /A 100/0.85
Water heater Category** CategoryⅢ
FDG370IN-NG
FDG370IN-LPG
FDG420IN-NG
FDG420IN-LPG
Tankless Gas Hot Water Heater Installation Manual
05
NOTE:
• Check the rating plate to ensure that this product matches your specifications.
• The manufacturer reserves the right to discontinue, or change at any time,
specifications or designs without notice and without incurring obligation.
Water heater Category — water heaters of other than direct vent type, for
outdoor installation, are divided into four categories based on static pressure
produced in the vent and flue loss.
Category I - a water heater that
operates with a non-positive vent
static pressure and with a vent gas
temperature that avoids excessive
condensate production in the vent.
Category II - a water heater that
operates with a non-positive vent
static pressure and with a vent gas
temperature that may cause
excessive condensate production in
the vent.
Category III - a water heater that
operates with a positive vent static
pressure and with a vent gas
temperature that avoids excessive
condensate production in the vent.
Category IV - a water heater that
operates with a positive vent static
pressure and with a vent gas
temperature that may cause
excessive condensate production in
the vent.
*15 psi or above is recommended for water maximum flow.
**The category of the water heater with respect to the venting system.
Tankless Gas Hot Water Heater Installation Manual 06
• This manual provides the information you need to install, operate, and
maintain your water heater.
• The model description is listed on the nameplate, which is located on the
side panel of the water heater.
• Read all installation instructions thoroughly before installing this product.
• If you have any questions or concerns about this device, please consult the
manufacturer or its local agent.
• The unit is a boxless gas fast water heater designed to effectively supply hot
water continuously during proper installation.
• This water heater can only be installed indoors for indoor models.
* This diagram illustrates tankless water heater design concepts only and
does not accurately represent the water heater's physical description.
Gas valves
Computer board
Gas
Water control valve
Flow sensor
Anti-freezing
Thermostat
Fan motor
Heat exchanger
Water temperature
sensor
Hot water
Cold water
Heating device
Over temperature
protection therm
Burners
Introduction
• The principle of an instant hot gas water heater is simple:
Tankless Gas Hot Water Heater Installation Manual
07
1. A hot water tap is turned on.
2. Water enters the heater.
3. The water flow sensor detects the water flow.
4. The computer initiates the fan motor and sends a signal to the igniter to
create an ignition spark.
5. The gas ignites and flames appear within the burner chamber.
6. Water circulates through the heat exchanger and then gets hot.
7. Using thermistors to measure temperatures throughout the water heater,
thecomputer modulates the gas and water valves to ensure proper output
watertemperature.
8. When the tap is turned off, the unit shuts down.
This series of gas water heaters with solar linkage function by default:
a. When it is detected that the inlet water temperature reaches a
predetermined value, the water heater does not start;
b. When the combustion work is started, and the inlet water temperature
is less than the set temperature by 4℉ (2℃), the water heater stops
working;
c. When the combustion work is started, if the inlet water temperature is
≥140℉(60°C), the water heater stops working.
System start condition Normal combustion
conditions
Inlet water
temperature
(℉)
Set temperature -
inlet water
temperature
(℉)
95~149
(35℃~65℃)＜113(45℃) ≥7(4℃) ＜140(60℃) ＞4(2℃)
Controller
temperature
adjustment
range ( ) ℉Inlet water
temperature
(℉)
Set temperature -
inlet water
temperature
(℉)
Tankless Gas Hot Water Heater Installation Manual 08
Safety Definition
Safety Guide
DANGER
Indicates an imminently hazardous situation which, if not avoided,will
result in death or serious injury.
WARNING
Indicates an imminently hazardous situation which, if not avoided,could
result in death or serious injury.
Indicates an imminently hazardous situation which, if not avoided,could
result in minor or moderate injury.
Indicates information considered important but not hazard related.
NOTICE
CAUTION
General
1. Follow all local regulations, or in the absence of local regulations, follow
the current version of the US National Gas Code: , US ANSI Z223.1/NFPA 54
and/or ,Natural Gas and Propane Installation Code. CSA B149.1
2. Ground the equipment properly in accordance with all local regulations
or without local regulations, using the National Electrical Code: ANSI / NFPA
70 Canadian CSA standard C 22.1 or Canadian Electrical Code Part 1.
3. Carefully plan where you plan to install the water heater. please ensure:
Your water heater will have enough flammable air and proper ventilation.
Install the water heater in a location where water leaks do not damage the
surrounding area.(See page 11)
4. Check the gas type, gas pressure, water pressure and rated current on the
nameplate.
* If the unit does not meet your requirements, please do not install and
consult the manufacturer.
5. If any problems occur, turn off all hot water taps and turn off the gas.Then
call a trained technician or gas company or manufacturer.
!
!
!
Tankless Gas Hot Water Heater Installation Manual
09
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