48
PART 12 INSTALLATIONS
WARNING
Before starting the boiler, smell near the floor and around the
boiler for any gas odours or any unusual odour. Remove the
stainless steel jacket and smell the interior of the boiler. If
there is any sign of a gas leak, do not proceed with startup.
Repair all the leaks before attempting to start the boiler.
WARNING
Propane boilers ONLY – Your local propane supplier adds
an odorant to the propane gas to allow for propane gas leak
detection. In some cases, the added odorant can fade and
the gas may not give off any noticeable odour. Before
startup have the local propane supplier check for the correct
odorant level in the gas.
12.1
CHECKING THE INSTALLATION
•
Inspect the connections for water, gas and electricity.
•
Inlet gas pressure must be a minimum of 3” W.C. for
natural gas and 11” W.C. for propane.
•
With the boiler off, open the main gas supply valve and
vent the trapped air from the piping leading to the boiler.
Confirm that all gas connections to the heater are tight
and that there are no missing test plugs.
Refer to Section 10.1 Setting the Correct Combustion of the
manual for recommendations on setting combustion
characteristics
12.2
CHECKING THE CONSTRUCTION
•
Check the boiler wiring to see that it agrees with the
wiring diagram supplied.
•
Confirm that all terminal strips and field connections are
identified.
•
Confirm that the DynaMax Controller control is set in the
proper mode. In remote mode an external controller
determines the set point and the stage contacts on the
DynaMax Controller are always closed. Auto reset limits
are fixed in all Modes.
•
With the boiler running, check for flue gas leaks along
the inner cabinet joints and around the flue outlet.
•
Repair any leaks prior to proceeding to the next step.
•
At the factory, adjustments were made to achieve
proper input and acceptable burner performance at full
input and at minimum input.
12.3
HEATING BOILER INSTALLATIONS
Before beginning the installation, consult local codes for
specific plumbing requirements. The installation should have
unions and valves at the inlet and outlet of the appliance so
it can be isolated for service. An air separation device must
be supplied in the installation piping to eliminate trapped air
in the system. Locate a system air vent at the highest point
in the system. The system must also have a properly sized
expansion tank installed. Typically, an air charged
diaphragm-type expansion tank is used. The expansion tank
must be installed close to the boiler and on the suction side
of the system pump (appliance Inlet) to ensure proper
operation. Caution: This appliance should not be operated at
less than 12 PSIG cold. Pressure will rise when hot.
Expansion tank sizing will determine the pressure when the
system is hot. Do not operate the system at less than 18-20
PSIG when hot. Water piping must be supported by suitable
hangers or floor stands, NOT by the appliance. Pipe systems
will be subject to considerable expansion and contraction.
Pipe supports could allow the pipe to slide resulting in noise
transmitted into the system. Padding is recommended. The
boiler pressure relief valve must be piped to a suitable floor
drain. See Section 4.11.
12.4
INSPECT & RECHARGE CONDENSATE
COLLECTION/NEUTRALIZING RESERVOIR
1) Inspect the condensate reservoir in the DynaMax,
making sure the collection box is intact.
2) Remove screw holding lid on to condensate collection
box. Remove lid from the condensate collection box
3) Examine neutralizer medium and refill as necessary with
fresh medium
4) Fill with fresh water until the water begins to flow out of
drain
5) Re-install the lid and hold-down screw on the
condensate collection box.
WARNING
The condensate collection box must be filled with water to
prevent flue gas emissions from escaping during boiler
operation.
CAUTION
A leak in a boiler “System” will cause the fill system to
introduce fresh water constantly, which may cause the tubes
to accumulate a line/scale build up. Lime/scale buildup
leading to heat exchanger failure is NOT covered by
warranty.
12.5
WATER CONNECTIONS
Pipe size must be in accordance with Tables 4 or 6
(depending on model) and, between supply and return lines,
must not exceed 50 feet of equivalent length. Any reduction
in recommended pipe size may decrease flow resulting in
high temperature rise across the heat exchanger, boiler
noise, flashing to steam and non-warrantable heat
exchanger damage.
12.6
PIPING LENGTHS
The appliance circulator provides the water flow from the
primary boiler piping, through the boiler and back to the
primary system. Pipe diameter and length are critical to
ensure proper flow through the boiler.
The secondary loop piping to and from the appliance must
have a fully ported ball valve installed in both the supply and
return side piping and will be used for isolation only. The ball
valves must be the same diameter as the installed piping. If
flow control is required, other means of flow control such as
globe valve or flow setter should be used.
12.7
SUMMARY
a) Typical Boiler Installations
General Plumbing Rules
1) Check all local codes.
2) For serviceability, always install unions.
3) Always pipe pressure relief valve to an open
drain.
4) Locate system air vents at highest point of
system.
5) Expansion tank must be installed near the
boiler and on the suction side of the system
pump.
6) Support all water piping.
7) Place drip pan underneath boiler. (if required)
Summary of Contents for DMC 753
Page 20: ...16 ...
Page 63: ...59 PART 14 EXPLODED VIEW PARTS LIST DYNAMAX WALL HUNG ...
Page 64: ...60 DYNAMAX FLOOR MOUNT ...
Page 71: ...67 PART 15 ELECTRICAL DIAGRAMS 15 1 DM 80 250 INTERNAL WIRING DIAGRAM WALL HUNG MODELS ...
Page 72: ...68 15 2 DM 210 750 INTERNAL WIRING DIAGRAM FLOOR MOUNT MODELS ...
