13
The conversion of the HU2 equipment package, from a
factory installed 120 volt system to a hardwired
120/240volt system, must be completed by a certified
licensed electrician. This procedure will convert the
heater from 120 volts (1000 watts) to 240 volts (4000
watts). All other electrical components will remain 120
volts, so it will be necessary to include a neutral wire in
the new electrical service. It will also be necessary to
select how the heater will operate, thereby dictating the
size of the new electrical service. If the heater will
operate only when the low-speed pump is running, then
a 30 amp service will be used and the #10 dip switch will
be set to the
low amp
position (page 17). If the heater
will operate when both high and low-speed pumps are
running, then a 50 amp service is required and the #10
dip switch will be set in the
high amp
position.
Re
gardless of your choice, the following will
also have to be done.
1.
Remove and discard the 120 volt GFCI
power cord.
2.
Remove and discard the white wire jumper between J28 and J57 (dotted line shown in above diagram.
3.
On J11, install small black jumper block on the two pins.
4.
Move #10 dip switch to proper position: low amp for a 30 amp service, or high amp for a 50 amp service.
5.
When supplying the new 4 wire service, connect line 2 to the terminal indicated by the dotted line in the above
diagram.
Additional wiring information:
GFCI PROTECTION: The new service must be protected with by a GFCI and a disconnect switch. The National Electrical Code requires that spas connected to 240 volts
circuits be equipped with a GFCI and disconnect switch. See National Electric Code Articles 680-12 and 680-42. P1 series spas are not equipped with a 240 volt GFCI or
a disconnect switch. A GFCI must be installed by a certified licensed electrician.
OUTDOOR LOAD CENTER: The addition of an outdoor load center such as a Siemens W0408ML 1125 or equal must be added to the circuit. This type of load center
provides both a GFCI and Disconnect Switch in a convenient configuration as required by the National Electric Code. (See next page for suggested wiring configuration)
ISOLATED, DEDICATED 240 VOLT, 30 OR 50 AMP CIRCUITS ARE REQUIRED An isolated, dedicated 240 volt, 30 or 50 amp circuit is required to provide the power
necessary to properly operate the 240V equipment package.
PERMANENTLY HARD WIRED: All 240 volt operations wiring must be permanently hard wired, installed in grounded conduit and installed in compliance with the
National Electrical Code and all local codes.
WIRE SIZING MUST MEET ELECTRICAL CODES: All installations are different. Wire sizing must meet the National Electrical Code and all local code specifications.
See next pages for more conversion details
H
H
U
U
2
2
C
C
O
O
N
N
V
V
E
E
R
R
S
S
I
I
O
O
N
N
F
F
R
R
O
O
M
M
1
1
2
2
0
0
V
V
T
T
O
O
2
2
4
4
0
0
V
V
