To Next PageTo Next PageWhy Nortek VENMARCES VHC-36 enthalpy wheel freezing?
If the Nortek Heating System's enthalpy wheel is freezing, consider the following: * There may be an imbalance of supply and exhaust air. Check the filters and heat exchanger for blockage. * Check the balance of airflows. * The defrost damper may not be functioning. Check for operation of the damper actuator. * The pre-heater may not be functioning. Check for operation of the damper actuator.
Why Nortek Heating System compressor is running but there is no pressure buildup?
If the Nortek Heating System's compressor is running but there is no pressure buildup, it may be due to scroll reverse operation. To resolve this, reverse any two phases on the three-phase compressor.
Why only supply fan will turn on in Nortek VENMARCES VHC-36 Heating System?
If only the supply fan turns on in your Nortek Heating System, it may be because: * The unit is in recirc defrost (recirc units). Wait until the unit is out of defrost. * The unit is in unoccupied recirc (recirc units). Check the external wiring. * The damper end switch isn't made. Check the outdoor air damper for proper wiring and ensure that the end switch is making.
Why only exhaust fan will turn on in Nortek VENMARCES VHC-36?
If only the exhaust fan turns on in your Nortek Heating System, it could be because: * The unit is in defrost (exhaust units). Check the connection to the motor. * The motor wiring is incorrect. * The damper end switch isn't made. Check the exhaust air damper for proper wiring.
What to do if Nortek VENMARCES VHC-36 Heating System damper will not open?
If your Nortek Heating System's damper will not open, it could be due to: * Interrupted electrical supply. Check the wiring on the damper actuator. * A defrost relay issue in the control box. Check the relay wiring and operation.
General| Brand | Nortek |
|---|---|
| Model | VENMARCES VHC-36 |
| Category | Heating System |
| Language | English |
Defines different levels of alerts used in the manual for safety and damage prevention.
Guidelines for selecting the optimal placement of the unit for performance and access.
Principles for designing ductwork to ensure optimal fan performance and minimize noise.
Details on connecting the unit to the main electrical power source.
Explains different modes for controlling ventilation based on occupancy and system settings.
Instructions for connecting heating and cooling coils, including internal and external piping.
Details on the types and maintenance of compressors used in the system.
A checklist of essential steps to complete before initiating unit start-up.
Step-by-step guide for starting the unit in occupied ventilation mode.
Instructions for starting the unit in unoccupied recirculation mode.
Explanation of the free cooling function and its operation.
How CO2 sensors control ventilation via VFDs and other methods.
Using pre-heaters to prevent frost formation on the enthalpy wheel.
Procedures for adjusting fan speeds and sheaves to achieve correct airflow.
Instructions for inspecting and replacing air filters.
Procedures for adjusting drive belt tension for optimal fan operation.
Steps for removing the enthalpy wheel cassette for service.
Detailed steps for cleaning the unit's coils for optimal heat transfer.
Diagram showing base unit dimensions and required service clearances.
Illustrates the process of installing hoods on outdoor VHC units.
Diagram showing the recommended method for rigging and lifting the VHC unit.
Comprehensive technical specifications and data for VHC models.
Provides full load amperage data for various fan motor HP and voltages.
Table for selecting standard overcurrent protection based on MOP value.
Overview of low voltage terminal controls for electro-mechanical units.
Lists all available inputs for DDC control systems.
Wiring diagram for occupied ventilation control with DDC and electro-mechanical systems.
How head pressure is controlled using modulating valves.
Proper methods for piping two-way and three-way water valves.
Instructions for installing and wiring the water flow switch.
Data points to record during unit start-up for performance verification.
Safety warnings related to fire and explosion hazards with gas furnaces.
Conditions and clearances required for safe gas furnace installation.
Guidelines for proper venting of combustion gases from the furnace.
Explains error codes indicated by LED flashes on the ignition control.
Procedures for recovering the furnace from a lockout condition.
Instructions for the electrical installation of electric coil heaters.
Safety procedure for disconnecting power before electrical work.
Recommended visual checks for electric coil heaters during maintenance.
Formula for calculating pressure drop based on airflow and unit size.
A table listing common problems, their causes, and solutions for VHC units.
A chart detailing recommended maintenance tasks and their frequencies.
Steps for correctly measuring the required length for link belts.
Procedures for installing link belts onto sheaves.
Pre-charging steps and considerations for the refrigeration system.
Procedure for measuring and evaluating liquid sub-cooling for charge verification.
Data on temperature rise for VHC-36 gas furnace across various air volumes and firing rates.
