Camus Hydronics DynaMax DMH081, Installation, Operation And Service Manual

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19
PART 5 ELECTRICAL &
CONTROLS
IT IS EXTREMELY IMPORTANT THAT THIS UNIT BE
PROPERLY GROUNDED!
5.1 ELECTRICAL CONECTIONS
Table 14: DynaMax HS Electrical Requirements
DynaMax HS Maximum Amp Draw
Model
Voltage
Requirement
Full Load
Amps
[Amperes]
Maximum Over
Current
Protection
[Amperes]
81, 82, 83
120VAC, 60Hz,
Single Phase
4 15
101, 102, 103 4 15
151, 152, 153 4 15
201, 202, 203 4 15
211, 212, 213 4 15
251, 252, 253 4 15
261, 262, 263 4 15
291, 292, 293 4 15
391, 392, 393 4 15
501, 502, 503 4 15
601, 603 4 15
701, 703 6 15
801, 803 6 15
602, 702, 802
230VAC, 60Hz,
Single Phase
8 15
The appliance, when installed, must be electrically grounded
in accordance with the requirements of the authority having
jurisdiction or in the absence of such requirements, with the
latest edition of the National Electrical Code ANSI/NFPA No.
70. When the unit is installed in Canada, it must conform to
the Canadian Electrical Code, C22.1, Part 1 and/or local
Electrical Codes.
•
All wiring between the appliance and field installed
devices shall be made with wire having minimum 220ºF
(105ºC) rating.
•
Line voltage wire exterior to the appliance must be
enclosed in approved conduit or approved metal clad
cable.
•
The pump must run continuously when appliance is
being fired.
•
To avoid serious damage, DO NOT ENERGIZE the
appliance until the system is full of water. Ensure that all
air is removed from the pump housing and piping before
beginning initial operation. Serious damage may result if
the appliance is operated without proper flow.
•
Provide the appliance with proper overload protection.
•
All wires being placed into the terminal block should be
horizontal for at least an inch to ensure sufficient
electrical conductivity.
5.2 HIGH LIMIT
A manual reset fail-safe high limit aqua-stat control is inside
the appliance and the control bulb is installed in a dry well in
the heat exchanger outlet. The setting of this control limits
maximum discharge water temperature to 210
o
F (CPVC,
AL29-4C, Stainless) and 185
o
F (PVC). The temperature of
the outlet water in the heat exchanger must drop a minimum
of 30°F (16.7°C) below the setting of the high limi t control
before the reset function can be activated.
5.3 DYNAMAX HS CONTROLLER
This appliance uses a direct spark ignition control system.
The operation of the DynaMax HS Controller for the direct
spark igniter proves the presence of main flame using a
flame sensor proof current (0.8µA). A status of Ignition
Failed will be displayed on the main panel if the boiler fails to
light after three (3) consecutive ignition attempts.
Figure 22: DynaMax HS Controller
Table 15: Connector Description
Connector Connector Description
J1 Flame Sensor, Ground Rod
J2
Fan Modulation
J3 Display, Lead lag, Modbus Comm.
J4
24VAC Power, Pump, VFD
J5 Gas Valve, Safety Interlock String
J6
Safety Annunciation, Remote Operator
J8 24VAC Power, Inlet, Outlet Sensor
J9 DHW, Stack Sensor
5.3.1 SERVICE PARTS
The DynaMax HS Controller is not repairable. Any
modification or repairs will invalidate the warranty and may
create hazardous conditions that result in property damage,
personal injury, fire, explosion and/or toxic gases. A faulty
direct spark igniter MUST be replaced with a new factory
part. DO NOT use general purpose field replacement parts.
Each appliance has one DynaMax HS Controller, one direct
spark igniter and one flame sensor. A list of recommended
spare parts is illustrated in parts breakdown in this manual.