www.poolpak.com | 800-959-7725
40
| ComPak
®
Series - Installation, Operation and Maintenance
CAUTION! Excessive water flow can cause premature erosion and pitting of the pool water condenser.
Adjust valve so that the water flow does not exceed the GPM or pressure drop listed in the table.
PoolPak® recommends a fixed flow control or adjustable flow circuit setter.
!
CAUTION
Do not run piping across service panels, evaporator coil face or air discharge outlet.
!
CAUTION
Pool Water Piping (AWH and AWV models only*)
If a new or existing pool water heater is piped within the same circuit, the ComPak® unit should be connected in
a parallel loop between the filter and the other heater. This allows the ComPak® unit to act as the primary water
heating source and the other heater as a backup or supplemental water heater.
All pool purification and chemical feed systems MUST be installed downstream of the unit. See Figure 4-11 for
typical water piping illustration. This includes the practice of adding chemicals directly to the skimmer which
results in highly concentrated, corrosive chemicals passing over and through the ComPak® water condenser.
Water chemistry must be maintained at a pH level between 7.2 and 7.6, with a free chlorine level not exceeding
3.0 PPM and a combined chlorine level less than 0.3 PPM.
If possible, install the ComPak® unit above the pool water level. If it is installed below the pool level, isolation
valves must be added. Breakable couplings should be located near the unit on both the water inlet and outlet
lines. When installing piping, connect the piping to these couplings last so as not to place stress on the other
connection in the plumbing system.
A constant flow of water is required through the ComPak® units’ condenser. The circuit to and from the unit must
be capable of maintaining the flow rate as specified for the installed unit (see ComPak® AW Performance in
Table 3-1
). To ensure correct water flow, the filter pump usually operates at the same time as the ComPak® unit.
However, to reduce energy consumption during filter off cycle times, a two-speed or small auxiliary water pump
which bypasses the filter may be used.
PoolPak recommends installing water pressure tap ports to check influent and effluent water pressure. See
ComPak® AW Performance in
Table 3-1
for the particular unit model in question for the proper flow rate and
pressure drop across the pool water condenser. The pressure tap ports should be installed in a straight length of
the water piping, exterior to the ComPak® unit. Install the port before any 90-degree turns and approximately 6
inches from the corner-post of the unit.
In some instances, piping from the ComPak® unit to the filter return line may not be feasible or economical.
The unit may be installed on its own supply and return line using a properly sized water pump and appropriate
strainer. Ensure that auxiliary water heating systems are staged to supplement the ComPak® unit water heating.
If the ComPak® unit is installed above the pool surface and the main circulating pump cannot provide the proper
water flow to it at the specified pressure, an auxiliary booster pump is required.
Condensate may be returned to the pool (if local codes allow), but PoolPak® LLC neither recommends nor
disapproves this practice. The installer should check local codes prior to making this decision. Condensate must
be filtered prior to being returned to the pool.
If multiple ComPak® units are installed on the pool water piping circuit, pipe them (and any auxiliary water
heater) in parallel. Piping ComPak® units in series may result in the downstream unit(s) sensing the pool water
temperature as satisfied and not reject heat to the water to its full capacity. The actual pool water temperature
should be sensed by each ComPak® unit and auxiliary water heater.
