P/N 474131 Rev. M 8/2020 MasterTemp Pool and Spa Heater
31
On an outdoor shelter installation, the exhaust discharges into a vent pipe. Orient
the heater so that the vent pipe does not interfere with adjustment of the operating
controls. The control panel located on the top panel can be rotated to any of the
three sides of the heater for easy access, see Figure 27.
1. Remove the bolts from the door panels. Remove both door access
panels.
2. Remove the four corner screws that secure the top panel. Lift the top
panel upward to remove the top panel.
3. Rotate the top panel to the desired position located at 90° angles. Note
that the control panel must NOT be located on the side where the vent
is located.
4. Replace the top panel down onto the side panels. Be sure that there are
no wires caught under the panel.
5. Secure the top panel using the four corner screws.
6. Reattach the door access panels.
After installation, the installer MUST test and check that the heater is operating and
functioning properly.
Some building codes require that the heater be anchored to the equipment
pad or platform to withstand high wind pressures created during hurricanes. A Bolt Down Bracket
Kit, P/N 42001-00855, is available with anchor clamps designed to hold the unit to the equipment
pad in high wind conditions, see Figure 28. Installation of the anchor clamps are recommended
for all installations.
Door
Access
Panel
Top Panel
Door
Access Panel
Figure 27.
Lead
Anchor
For Heater mounting
bolts and clamps,
purchase separately
Bolt Down Bracket Kit,
Part No. 460738.
Figure 28.
CONTROL PANEL INDEXING
FINAL INSTALLATION CHECK
Combustion PVC Air Intake 3 in. Pipe
(Vertical or Horizontal)
No. of 90° Elbows Maximum Length in M (ft)
0
(21.3 M) 70 ft.
1
(17.7 M) 58 ft.
2
(14.0 M) 46 ft.
3
(10.4 M) 34 ft.
4
(6.7 M) 22 ft.
15.24 cm (6 in) min. 30.4 cm (12 in) min.
91.44 cm (36 in) min.
30.4 cm (12 in) min.
7.62 cm (3 in)
PVC Pipe
7.62 cm (3 in) PVC Pipe
91.44 cm
(36 in) min.
Direct Air Intake Duct with 80 mm PVC Pipe (Indoor Installation)
For indoor heater installations where combustion air supply might be insufficient, the MasterTemp
Heater is certified
for a direct air intake duct using 80 mm PVC pipe. If outside air is drawn through 80 mm PVC duct directly into the
heater, PVC pipe can be installed in accordance with the following requirements: The air intake opening MUST be
installed at least 30 cm above the roof line or normal snow levels for free air flow. The Category I or III exhaust vent
termination cap must have at least 1 m minimum vertical clearance from air intake duct. See Figure 26).
WARNING
DO NOT USE PVC PIPE FOR FLUE EXHAUST VENT.
FLUE EXHAUST VENT TEMPERATURES CAN BE IN
EXCESS OF 250°C. FLUE EXHAUST VENT
MUST BE
CATEGORY I or CATEGORY III METAL VENT.
NOTE
Each 90-degree elbow reduces the maximum horizontal PVC air intake duct
run by 4 m and each 45-degree elbow in the PVC air intake duct run reduces
the maximum run by 2 m. See the Table above for the maximum lengths using
90-degree elbows.
Figure 26.
