COMET 145 – INSTALLATION/OPERATION MANUAL
5IM-OB-COM0-00
Mar/11
5
THROUGH-THE-
Approved for use with the Granby Direct Vent and KPV -SS1C.
WALL VENTING
COMBUSTION &
The B139 Installation Code requires the installer to provide sufficient
VENTILATION AIR
outside air for ventilation. Always provide sufficient air to ensure safe
operation. See B139 for make up air requirements (Non-Direct Vent
only). Important for KPV-SS1C through-the-wall power vent system.
2.5 BOILER
CONFIGURATION
L OR R BREECH
To change, remove breech casing and breech. Rotate and replace.
Ensure gaskets are tight. See Figure – 4.
L OR R RETURN
1 1/4” x 1 1/4” return/drain Tee supplied in installation kit. May be
installed to give L or R return. See Figure – 4.
LEVELING BOLTS
Install in base frame as required. This is an optional feature.
2.6 ASSEMBLE
BOILER
CABINET
See
section
5.0 CABINET ASSEMBLY
or Figure – 6.
OIL BURNER
See
section
2.8 ASSEMBLE & INSTALL BURNER
.
AQUASTAT
Honeywell L8124L1029 and White Rogers 8B43A-601 or certified
equivalent. For remote bulb, use Honeywell L8151A1052. The Triple
Aquastat can be located on the tankless coil or on either side of the
boiler. The openings not used for the triple aquastat must be sealed
with the pipe plugs provided.
CIRCULATOR
As required.
DRAIN
1/2” IPS installs on return Tee.
TRIDICATOR
Combination temperature and pressure indicator.
RELIEF VALVE
Watts 335, 30 psig, ASME, 3/4” or equivalent.
BLOW DOWN
Install 3/4” blow down termination within 6” of floor on relief valve
outlet. Blow down must contain no fittings that could prevent proper
operation. Must terminate in a SAFE PLACE.
EXPANSION TANK
Diaphragm or cylinder as required.
FEED WATER
Watts 1156 or equivalent, 1/2” IPS.
VALVE
DRAFT CONTROL
5” CSA approved or equivalent. Strong draft may require a larger
control. Attach the balanced draft control to the smoke/vent pipe as
shown in control instruction sheet. Not applicable for Direct Vent.
WIRING HARNESS
Supplied with boiler installation kit, see Figure – 3.
