Eco-King HWB-299, Installation And Service Manual

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E93.1801EN171 HWB installation manual 104
Conversion from natural gas to propane
Conversion of the water heater to a different gas type must be performed by a certified tech-
nician. Parameter 138 must be set correctly!
Wrong setting can lead to damage to the appliance or shorten the lifespan of the appliance!
The warranty of the device will expire if a wrong selection has been made.
Use only parts/conversion kits obtained from Eco King
and intended to be used with this particular boiler.
Every conversion kit is provided with instructions how to
assemble the kit to the boiler.
Converting the boiler to propane (LP) requires the following actions (details below).
1. check boiler model
2. check burner controller type
3. mount the orifice
4. set parameter 138
5. adjust the CO
2
/ O
2
percentage
6. confirmation: apply the propane sticker and mark the boxes
1. Check water heater model. Check if you have a 299, 399 or 499 water heater. The model number is on the
dataplate, on the inside of the water heater casing, top side.
2. Check burner controller type.
Check which controller type is installed, see picture.
- if a model number is on the sticker on the controller,
the water heater is equiped with an internal igniter.
- if a sticker "EXTERNAL IGNITER 299/399/499 MBH"
is present on the controller, the water heater is
equiped with an external igniter.
3. Mount the orifice:
Converting the boiler to propane is done by placing a pro-
pane orifice between gas valve and venturi. By using the cor-
rect orifice size (see table), the measured CO
2
(O
2
) percent-
age in the flue gas will already be close to the desired value.
Installing the orifice (see also picture):
Required tools: wrench 55, hex key 5 mm and hex key 4 mm.
1. Close the external gas shutoff valve and disconnect the elec-
trical power before opening the water heater.
2. Use a wrench to open the coupling in the gas line in the water
heater. The three screws, with which the venturi is mounted
onto the fan, can now be removed.
3. Venturi and gas combination valve can now be separated. The
orifice is to be placed between venturi and gas combination
valve. The rounded side of the orifice must be on the side of
the gas combination valve.
The orifice must be mounted into the gas entrance of the ven-
turi and secured with the rubber gasket.
4. Venturi and gas combination valve can now be reconnected.
5. Remount the gas combination valve and the venturi onto the
fan. Close the union in the internal gas line.
6. Now open the external gas valve.
7. Check for gas leaks.
8. Reconnect the electrical power.
9. If in operation, check again for gas leaks on all parts that have
been apart.
Required parts: (see § 5.1 Accessories)
Propane kit for VMS Venturi hole Ø 6.2 HWB-299
Propane kit for VMS Venturi hole Ø 6.7 HWB-399
Propane kit for VMS Venturi hole Ø 7.2 HWB-499
Picture 18. 1
Water heater type Orifice Inner Diameter
HWB-299 6.2
HWB-399 6.7
HWB-499 7.2
Table 18. 1
WARNING
Orifice
Gasket
Sticker
EXTERNAL IGNITER
299/399/499 MBH
299MBH VERSION
399MBH VERSION
499MBH VERSION