Boiler Mounting
1. Ensure that the boiler's mounting bracket is securely
bolted to the wall structure.
2. Fasten the bottom of the boiler to the wall (see
adjacent illustration).
Important: Not applicable for construction
heating such as fouled fans, burners, and ignitors not
covered under warranty.
Venting
(Sections 4.5 to 4.7)
Follow the venting specifications and information for the
correct venting material and venting length provided in the
above sections of the manual.
Important: Use appropriate appliance adapters
when using PP or stainless steel venting.
• Ensure that sidewall configurations have adequate vertical
separation, and that exhaust plumes are well away from all
building air intake vents.
• Ensure that all venting material is sloped towards the boiler.
PP venting must be sloped at a minimum of ⅝" per foot to
ensure that no leaks occur via gaskets.
• Ensure that PP venting is supported every 36" (min).
• On longer horizontal runs of PVC and CPVC, increase the
grade to ⅜" or more.
• Fully insert approved venting material (during twisting
stabilize the lower part of the internal duct to prevent
rotation) into the boiler's exhaust outlet with an approved
lubricant. Then tighten the
clamp to lock the venting in
place.
• Check that the venting is securely
attached to the exhaust flue
of the boiler by pulling on the
venting.
Condensate Trap
1. At the bottom of the boiler, remove the trap door.
2. Fill the trap assembly with water.
3. Attach the trap to the drain spout.
4. Re-install the trap door.
5. Check for leaks.
120-302E7 - Quick Reference Installation Guide - SL 10-85 G3, SL 14-115 G3, SL 20-160 G3, SL 30-199 G3
Quick Reference
(
)
Section 4.4 of the manual
(
)
Section 4.9
Software
(
4.12)
Section
We recommend that boilers be
commissioned with the latest
software version, available by
internet connection or by USB
(follow QR code for details).
Gas Supply
(
Section
For gas delivery to the boiler, we recommend using hard
piping rather than flexible piping. If you use flexible piping,
ensure that the gas pipe size is appropriate for the maximum
BTU input of the boiler.
Minimum Gas Pressure
Maximum Gas Pressure
Size piping for sufficient sustained gas delivery at sufficient
pressure to the boiler.
Recommended Supply Pressure at Full Load
Natural Gas
Propane
• Ensure that there is a minimum of 6 feet of piping
between the boiler and gas regulators.
• Use a manometer to test that gas delivered to the boiler
is delivered at sufficient pressure and that "lock up" does
not exceed the maximum pressure.
• If using a 5 psi to inches vented gas regulator, always
oversize the vent pipe to prevent hunting of the gas
regulator when boilers are firing at lower output levels.
• In retrofits with existing copper gas pipes, clean and clear
the gas piping of any debris before connecting to the
boiler. Failure to do so can result in a blocked gas valve.
and inconsistent performance.
Maximum Pipe
1/2" IPS
Length by Model
SL 10-85 G3/
SL 14-115 G3
30'
(Natural Gas)
SL 10-85 G3/
SL 14-115 G3
90'
(Propane)
SL 20-160 G3
10'
(Natural Gas)
SL 20-160 G3
50'
(Propane)
SL 30-199 G3
10'
(Natural Gas)
SL 30-199 G3
30'
(Propane)
LWCO Errors
To clear LWCO errors caused by air:
1. Ensure that there is no air trapped in the boiler and
boiler piping.
2. On the touchscreen controller Status Menu, go to
Clear Errors > Yes
Important: Before turning off the boiler, make
sure it is in "Standby" mode.
4.12)
4" w.c.
14" w.c.
7"
10"
1-1/4"
3/4" IPS 1" IPS
IPS
125'
400'
350'
1,000'
70'
200'
200'
600'
40'
150'
600'
125'
400'
1,600'
Need help?
Do you have a question about the SL 10-85 G3 and is the answer not in the manual?
Questions and answers