P/N 474131 Rev. M 8/2020 MasterTemp Pool and Spa Heater
25
3. Install the metal Flue Collar in the Vent Body of
the heater (located under the outside vent cover).
Fasten the metal Flue Collar to the Vent Body with
two #10 sheet metal screws. Use high temperature
silicone RTV to seal the Flue Collar to the Vent
Body. Before connecting the metal Flue Collar 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 100 mm (4”) end of the metal Flue Collar.
Attach the metal Flue Collar to the Vent Body
using the RTV supplied with the kit, following
the vent manufacturer’s instructions (included
with kit).
4. Attach the vent pipe to the metal Flue Collar with
sheet-metal screws.
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 assembling 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, local code
requirements and AS/NZS 5601.1 standards carefully
during assembly and installation.
5. Use approved re stop for oor and ceiling
penetrations. Use approved thimble for wall
penetrations. Use a 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 re stop) with
insulation. The roof opening must be located so
that the vent is vertical.
Listed
Termination
Cap
Storm Collar
Flashing
Firestop
Vent
Body
Metal Flue
Collar
Class B Double Wall
Metal Vent Pipe
Support Vertical
Vent Pipe so
adapter does not
take weight of
pipe.
500 mm min.
15 cm (6 in) min.
Clearamce to
Combustible
materials
Approved
Te rmination
Cap
Storm Collar
Flashing
Firestop
Vent
Body
Metal Flue
Collar
Double Wall
Metal Vent Pipe
SupportVertical
Vent Pipe so
adapter does not
takeweight of
pipe. Dispose
of condensate
according to
local codes.
Double Wall
Metal Vent Te e
Condensate
Drain w/trap
500mm (min.)
* See note (C)
15 cm (6 in) min.
Clearamce to Combustible
materials
Figure 20. – Typical Metal Vent Pipe Installation
(Vertical Venting)
6. Install vent pipe so that it can expand and contract freely as the temperature changes. Support the vent pipe according
to applicable codes and the 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.
Slope horizontal pipe down to condensate trap at least 2 cm per meter (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.
Figure 19.
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