ATI-C Gas Conversion Guide

Gas Conversion-110C,310C,510C
This water heater is configured for Natural Gas from the factory. However, if a field conversion to Propane Gas is
necessary, the conversion kit supplied with the water heater must be used and installed by a qualified service agency*.
Before you install the components in this Propane Gas conversion kit, verify the type of gas that will be used to fuel the
unit. An improper field conversion could cause potentially dangerous conditions that may cause an explosion or
fire resulting in property damage, bodily injury or both.
• This conversion kit shall be installed by a qualified service agency* or a gas utility service technician in
accordance with Manufacturer’s written instructions and all applicable codes and requirements of the
authority having jurisdiction. The information in these instructions must be followed to minimize the risk
of fire or explosion or to prevent property damage, personal injury or death. The qualified service agency*
is responsible for the proper installation of this kit. The installation is not proper and complete until
the operation of the converted appliance is checked as specified in the manufacturer’s instructions
suppied with the kit.
• If your water heater has been converted to use a different gas type in the past, the manufacturer
does NOT recommend converting it again.
• IN CANADA, THE CONVERSION SHALL BE CARRIED OUT IN ACCORDANCE WITH THE REQUIREMENTS
OF THE PROVINCIAL AUTHORITIES HAVING JURISDICTION AND IN ACCORDANCE WITH THE
REQUIREMENTS OF THE CSA-B149.1, NATURAL GAS AND PROPANE INSTALLATION CODE.
WARNING
* A qualified service agency is any individual, firm, corporation or company which either in person or through a
representative is engaged in and is responsible for the connection, utilization, repair or servicing of gas utilization
equipment or accessories; who is experienced in such work, familiar with all precautions required, and has
complied with all of the requirements of the authority having jurisdiction.
Tools Required:
• Phillips Screwdriver / Manometer / Gas Leak Detector
Included Items: 319143-580
LP Gas Manifold Nozzles Manifold gasket Gas Conversion Label
Qty: 2 Small / 1 Large
Qty: 1
Qty: 1
Before servicing the water heater, make sure that electrical power and gas service to the
water heater is turned OFF. Failure to do so may result in bodily injury, death, or property
damage.
WARNING
Procedure:
1. Turn off power supply.
2. Turn off both gas and water valves to the water heater.
3. Remove the front cover.
4. Once the front cover is removed, place it in a safe location to prevent accidental
damage. With the internal components exposed, locate the gas manifold near
the center of the unit.
5. Use a Phillips screwdriver to remove the 20 screws on the manifold plate
shown in Figure 1.
6. Remove the manifold plate. (Figure 2)
7. Remove the manifold gasket from the manifold plate. Discard it.
8. Install the new manifold gasket onto the manifold plate. Ensure that the gasket
is not compromised in any way. If it is, do not install the gasket. Replace it
with a new one. (Part number: 319143-581)
9. Refer to Figure 3 and identify the proper location for each LP Gas Manifold
Nozzle. The nozzle attachments are of two types: One small and one large. The
smaller nozzle attachments are for the left two sections and the larger one is for
the right section.
1W5220
100267297
Ensure that each manifold nozzle
includes a gasket prior to installation.
10.Install each LP Gas Manifold Nozzle as shown in Figure 3.
NOTE: The parts are keyed and cannot be installed incorrectly.
11.After making sure that the manifold nozzles are secure, install the
manifold cover using the 20 screws that were removed during step
5. See Figure 1.
Hand tighten the screws. Do not overtighten as this may damage or crack the components.
Do not use a powered screwdriver.
12. Set the Dip switches on the PCB to the correct position for propane. See the figures below for the proper propane
DIP switch settings.
• Turn off the power before changing the DIP switch settings.
• Only change the DIP switches specified above for the conversion to propane.
• Failure to properly set the DIP switches could cause carbon monoxide
poisoning, resulting in severe personal injury or death.
WARNING
Upper bank of
DIP Switches
<Upper bank of
DIP switches>
Gas type
Propane
OFF
ON
1 2 3 4 5 6 7 8
510C
Change to the above posion.
(No.1 SW : ON No.2 SW : OFF)
Gas type
Propane
OFF
ON
1 2 3 4 5 6 7 8 9 10
110C / 310C
DIP switches
Change to the above posion.
(No.1 SW : ON No.2 SW : OFF)
13. Verify that the gas supply pressure is within an acceptable range. For instructions, see “Gas Supply and Gas Pipe
Sizing for Propane” on the reverse side of this instruction sheet.
14. Turn power ON and turn on the gas supply.
15. Check for gas leaks around the manifold plate as fol-
lows:
a. Turn on a nearby hot water faucet.
b. Check for gas leaks by running a gas leak detector
along the edges of the manifold plate. If you find a
leak, do not proceed. Replace the manifold gasket
with a new one. (Part number: 319143-581)
16. Turn the water supply off.
17. After the water heater has completed its post-purge
process, turn off the gas supply and turn off power to
the water heater
18. Check the manifold pressures as described on the
reverse side of this instruction sheet.
19. Install the front cover with three screws.
20. Fill out all items on the gas conversion sticker with a
permanent marker. Affix the label on the heater as
shown in Figure 4.
21. Restart the water heater according to the Installation
Manual and Owner’s Guide. Verify proper operation before returning the water heater to service.
Figure 2
Figure 3
Small LP Gas
Manifold Nozzles
Large LP Gas
Manifold Nozzle
Remove
the 20 screws.
Figure 1
(continued overleaf)
Part No. : 319143-581
1W5240
This water heater was converted on
/ / (day-month-year)
to Propane gas with kit No. 319143-580
by
(name and address of organizaon making this conver-
sion, who accepts the responsibility for the correctness
of this conversion).
Ce chauffe-eau a été converti le
/ / (année-mois-jour)
pour le gaz propane avec le kit n ° 319143-580
par
(nom et adresse de l’organisme qui a effectué la
conversion), qui accepte l’entière responsabilité de la
qualité de la conversion.
Affix the label on the front cover in a conspicuous
location as close as possible to the rating plate on
the side case.
Collez l’étiquette sur la couverture dans un endroit
bien en vue le plus près possible de la plaque sig-
nalétique sur le boîtier de côté.
Model
110C
(AT-KJr3U-CV)
310C
(AT-K5U-CV)
510C
(AT-D3U-CV)
Inlet Gas Pressure
Pression de gaz d’entrée
Min. 8.0” W.C. (1.99 kPa)
Max. 14.0” W.C. (3.48 kPa)
Manifold Gas
Pressure
Pression de
gaz du
collecteur
Min.
inches WC
(pouces c.e.)
0.56 0.55 0.51
Max.
inches WC
(pouces c.e.)
1.8 3.5 3.7
BTU Input
Entrée BTU
Max.
BTU/h
15,000 15,000 15,000
Min.
BTU/h
140,000 190,000 199,000
Figure 4
Rang
Plate
Gas Conversion Label