Pool And/Or Hot Tub Heating - Central Boiler Pallet Burner Dual Fuel Owner's Manual

Pool and/or Hot Tub Heating

Valves should be installed so the heat exchanger can be
isolated and bypassed when shock-treating or adding
chemicals to a pool or hot tub (Fig. 34). Incorrect
chemical concentrations can cause rapid corrosion to
the heat exchanger. Bypassing the heat exchanger is
recommended until the pH has stabilized between 7.2
and 7.8.
If the swimming pool or hot tub is salt water treated, the
heat exchanger should be a shell and tube type (p/n 148,
151 or 177). See the Hydronic Component Selection
Guide (p/n 2482) for more information.
CAUTION
Do not install a swimming pool heat exchanger
inside a building below the level of the pool as a
damaged heat exchanger may result in extensive
flooding and draining of the pool.
Fig. 34
Section 1 - Furnace Installation
Do not use automotive or ethylene glycol
antifreeze in an outdoor furnace connected to
a swimming pool heat exchanger as a damaged
heat exchanger may cause severe personal
injury, death, or substantial property damage.
Do not operate the outdoor furnace frequently
or for extended periods of time with the water
temperature below 150˚F (65˚C) as this will result
in more condensation in the firebox that can lead
to corrosion.
used to bypass a portion of the pool water. There should be
a shut-off valve installed on the supply and return line to and
from the pool. Close these valves and fully open the bypass
NOTE
balancing valve when chemically treating ("shocking") the pool
Outdoor furnace water temp
or hot tub to stop the flow of the low pH water to the heat
setpoint should be set at
185˚F (85˚C) minimum.
exchanger. These valves can be opened only after the pH has
reached the safe level as recommended by the pool or hot tub
manufacturer. Return the bypass balancing valve to the
previously adjusted position.
WARNING
CAUTION
Pools and hot tubs typically have high
water flow rates, from 30-50 gpm (114-189
lpm). Because the MP Series is a high
efficiency heat exchanger and does not require the
full pool gpm flow, a bypass balancing valve must be
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