Removing A Water Heater From Wood Pallet; Gas Conversions - Smith XWH 150 Instruction Manual

REMOVING A WATER HEATER FROM WOOD
PALLET
1. After removing the outer shipping carton from the water
heater, remove the parts box.
2. Remove the front door to access the lag bolts in front of the
unit (see Figure below).
3. To remove the water heater from the pallet (after removing
the front door):
• Remove the two lag bolts from the wood pallet inside the
water heater. See Figure below.
• Detach the water heater from the lag bolts in the rear of
the unit, see Figure below.
Do not drop the water heater or bump the jacket on the floor or
pallet. Damage to the water heater can result.
Figure 4. Water Heater Mounting on Shipping Pallet

GAS CONVERSIONS

NOTE: The gas conversions for all the units must only be
performed by a qualified service technician.
The use of double-wall vent or insulated material for the For a
water heater already installed, you must turn off gas supply, turn
off power and allow the water heater to cool before proceeding.
You must also completely test the water heater after conversion
to verify performance as described under Start Up section of this
manual. Failure to comply could result in severe personal injury,
death, or substantial property damage.
For Models 150 - 400 you must install a propane orifice to operate
the XP water heater on propane gas. Verify when installing that
the orifice size marking matches water heater size (Models 150–
400, See Table below). The 500 - 800 Models do not require an
orifice installation for propane operation, but they will require a
valve adjustment.
Propane (LP) Conversion Table
Model
150
200
285
400
Models 150 - 285:
1. Remove the top and front access covers from the unit
(no tools required for removal).
2. Remove the three screws securing the gas valve to the
venturi. See Figure 5.
3. Locate the propane orifice disk from the conversion kit bag.
Verify that the stamping on the orifice disk matches the
water heater size (150 – 285) (see Table above).
Place the orifice into the black rubber grommet in the side of
the gas valve and secure in the valve (See Figure 5).
TABLE 7
Propane (LP) Orifice Stamping
150
210/ W150
285
8.0
4. Reposition the gas valve against the venturi and replace the
screws (See Figure 5) securing the valve to the venturi.
5. After installation is complete, attach the propane conversion
label (in the conversion kit bag) next to the water heater
rating plate. Attach the Propane (LP) caution label (in the
conversion kit bag) to the left side of the unit in the lower
left corner.
6. Replace the top and front access covers.
After converting to Propane (LP), check combustion per the
Start-up procedure on Page XX of this manual. Failure to check
and verify combustion could result in severe personal injury,
death, or substantial property damage.
Figure 5. Installing Propane Orifice - Models 150-285
Model 400:
1. Remove the top and front access covers from the unit
(no tools required for removal).
2. Remove the three screws securing the venturi to the
blower.
Note: When separating the venturi from the blower, take care
not to damage the O-ring inside the blower (see Figure 6).
3. Remove the four screws securing the gas valve to the
venturi (see Figure below).
4. Locate the propane orifice disk from the conversion kit
bag. Verify that the stamping on the orifice disk matches
the water heater size (see Table 7).
5. Remove the existing orifice from the O-ring in the side of
the gas valve and replace it with the orifice from the kit.
Position and secure the orifice in the valve as shown in
Figure below.
6. Reposition the gas valve against the venturi and replace
the screws (see Figure below) securing the valve to the
venturi.
7. Inspect the O-ring inside the blower. Handle the O-ring
with care, do not damage. Reposition the venturi against
the blower and replace the screws securing the venturi
to the blower (see Figure below).
Figure 6. Installing Propane Orifice - Model 400
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