Water Connections
Location
The heater requires water flow and positive pressure to fire and operate properly. It must therefore be installed downstream of the discharge side of the filter pump. A typical installation is plumbed as follows:
1.The inlet side of the filter is plumbed directly to the discharge side of the filter pump;
2.The outlet side of the filter is then plumbed to the inlet of the heater; and
3.The outlet of the heater is plumbed to the return line to the pool or spa. The pump, filter and heater are thus plumbed in series.
Heater must be located so that any water leaks will not damage the structure of adjacent area. High tempera- ture plastic pipe (CPVC) may be connected directly into the heater Models
CAUTION (Models
the time clock may be used for this purpose with instructions not to override this sequence manually. See wiring diagram section for electrical hookup loca- tion of the fireman switch in the electrical circuit.
NOTE: (Models
CONTROLS
Flow Switch
This dual purpose control shuts off the boiler in the case of a pump failure or low water condition. It is mounted and wired in series to the main gas valve. Standard on all models.
| NOTE: Flow switch will not operate if flow is less |
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| than: | Models | 60 gpm |
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| Models | 85 gpm |
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| Models | 180 gpm |
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Fig. 9: Flow Switch
Fig. 8: Plumbing
When local codes permit the use of less than four feet high temperature piping or two elbows, provisions should be made to always shut the heater off a mini- mum of 15 minutes prior to pump shut down in order to carry away residual heat and prevent damage to the low temperature piping. A fireman switch included in
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