Balboa Water Group BP 60Hz - Manual (Page 73)

73
Manufactured under one or more of these patents. U.S. Patents: 5332944, 5361215, 5550753, 5559720, 5,883,459, 6253227, 6282370, 6590188, 6976052, 6965815, 7030343, 7,417, 834 b2,
Canadian Patent: 2342614, Australian patent: 2373248 other patents both foreign and domestic applied for and pending. All material copyright of Balboa Water Group.
42211B
The heater requires at least 20 Gallons per Minute ( 1. GPM) of
flow for proper function.
Some systems may require at least 25 GPM.
2.
The suction system for the 2-speed pump or for the circ 3.
pump must be dedicated. There must not be any other
pumps connected to this suction system.
The suction system for the 2-speed pump or for the circ
4.
pump must include the following:
a. 2 suction fittings, or
b. 1 suction fitting and a skimmer.
If the suction system for the 2-speed pump or for the circ 5.
pump includes a filter, it is desirable that the filter incor-
porate a by-pass around the filter cartridge that opens
when the cartridge gets dirty. (Spring tension holding the
by-pass valve closed must be overcome by the vacuum
of the pump.) This by-pass should be capable of flowing
a minimum of 20 GPM during the low speed operation of
the 2-speed pump or during circ pump operation with the
cartridge 100% blocked. The inclusion of a suction fitting
appropriately plumbed into the suction circuit in conjunc-
tion with a vacuum filter may also meet this requirement.
The pressure system for the 2-speed pump or for the circ
6.
pump must be dedicated. There must not be any other
pumps connected to this pressure system.
The pressure system for the 2-speed pump or for the circ
7.
pump must discharge water freely into the spa.
If the pressure system for the 2-speed pump includes
8.
a diverter valve, or a diverter jet, there must not be an
“off” position that would stop water flow from the pump
or any other position that would throttle or reduce water
flow from the pump.
If the pressure system for the 2-speed pump includes
9.
flow adjustable jets that can be 100% closed, at least 2
non-adjustable jets must be included in each possible
inlet circuit so that a minimum of 20 GPM can flow
during low pump operation with all the jets closed. Any
other means of by-passing flow around the closed jets is
acceptable as long as the by-pass means is down stream
from the heater and allows a minimum of 20 GPM to
flow through the heater during low speed operation.
If the pressure system for the 2-speed pump includes
10.
flow adjustable jets that do not close 100%, at least 20
GPM must flow during low speed operation through each
possible inlet circuit with all the jets closed.
If the pressure system for a 2-speed pump or for a circ pump
11.
includes a filter, the filter must be equipped with a by-pass
around the cartridge that opens when the cartridge gets
dirty. (Spring tension holding the by-pass valve closed must
be overcome by the pressure of the pump.) This by-pass
must be capable of flowing a minimum of 20 GPM during
low pump operation with the cartridge 100% blocked.
If the pressure system for a 2-speed pump or for a circ pump
12.
includes branch circulation lines such as circuits intended
to operate ozone injection systems, these branch circulation
lines must be connected downstream from the heater.
Avoid inter-connection of the plumbing circuits for the
13.
2-speed pump or for the circ pump with other pumps in the
spa plumbing system for the purpose of freeze protection.
The Colossus control system will provide freeze protection.
There is also provision for remote sensing freeze protection
if required.
Position inlets and jets in the spa so that they do not direct
14.
water flow towards suction fittings or skimmers. This will
avoid a “thermal short circuit” and prevent excessive heater
and pump cycling.
If service valves are a part of the circulation system for the
15.
2-speed pump or for the circ pump, be sure to use valves
that incorporate a means of “locking” in the open position.
If the 2-speed pump or the circ pump is replaced in the field
16.
by service personnel, the replacement used must equal or
exceed the hydraulic specifications of the original pump.
To assure adequate performance, the spa plumbing must be
17.
1-1⁄2” minimum. The use of 2” is highly recommended. Either
schedule 40 or flexible PVC pipe is acceptable.
It is recommended that shut-off valves be installed in the
18.
suction and discharge lines.
Below are guidelines when designing replacing an older control system, or if designing a new spa system.
This information is included in order to offer more insight into spa plumbing and mechanics.
Spa Guidelines to Keep in Mind