MASTERTEMP
125 Pool and Spa Heater Installation and User’s Guide 460906 Rev. D 8/2020
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CONNECTING SINGLE-WALL STAINLESS STEEL VENT TO THE HEATER
Metallic:
1. Order an optional appliance adapter kit,
(Pentair offers optional appliance adapter kits, call Customer Service):
- Part No. 77707-0086 for Saf-T Vent or Saf-T Vent CI.
- Part No. 77707-0087 for Z-Vent.
2. Remove the outside vent cover.
3. Install the Appliance Adapter in the Vent Body of the heater (located under the outside Vent Cover). Before connecting
the Appliance Adapter to the Vent Body, wet a clean cloth or paper towel with isopropyl alcohol (rubbing alcohol)
and vigorously wipe the socket of the Vent Body. Immediately wipe the cleaned surfaces dry with a clean cloth or
paper towel. Repeat for the exterior of the heater end of the Appliance Adapter. Attach the appliance adapter to the
vent body using the adhesive specied by the vent manufacturer, following the vent manufacturer’s instructions.
WARNING
Risk of carbon monoxide poisoning if adapter is improperly attached. Mechanical connections (such as screws) can cause
cracking and leaks in the adapter. Do NOT drill holes or use screws to connect the appliance adapter to the heater vent body.
Attach with manufacturer’s specified adhesive.
WARNING
Risk of fire or asphyxiation if vent is not assembled according to manufacturer’s instructions or if vent parts from
different manufacturers are mixed. Vent parts from different manufacturers ARE NOT interchangeable. Mixing parts from
more than one manufacturer may cause leaks or damage to vent. When installing a vent, pick one manufacturer and be sure
that all vent parts come from that manufacturer and are specified by the manufacturer for your system. Follow manufacturer’s
instructions and local code requirements carefully during assembly and installation.
4. Install vent pipe so that it can expand and contract freely as the temperature changes. Support the vent pipe according
to applicable codes and vent manufacturer’s instructions. Pipe support must allow the vent pipe free movement out
and back, from side to side, or up and down as necessary, without putting a strain on the heater or vent body. It is
recommended to slope the horizontal pipe down to condensate trap at least 2 cm/M (1/4 in per foot). Install “Approved”
condensate drains at low points where condensate might collect. Plumb condensate drains to a drain through hard
piping or high-temperature tubing such as silicone rubber or EPDM rubber – do not use vinyl or other low temperature
tubing. Follow drain manufacturer’s installation instructions.
5. Use an “Approved” restop for oor and ceiling penetrations. Use an “Approved” thimble for wall penetrations.
Use an “Approved” roof ashing, roof jack, or roof thimble for all roof penetrations. Do not ll the space around
the vent (that is, the clear air space in the thimble or restop) with insulation. The roof opening must be located so
that the vent is vertical.
6. VentTermination–Vertical (See page 30) for height of vent termination above the roof. Use an “Approved”
vent terminal specied by local and national codes and your manufacturer’s instructions. A roof termination must
be vertical.
7. Make sure entire installation is sealed according to approved standard.
Continue to page 29.
Section 1. Installation Instructions
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