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Arzel Heat PumPro - User Manual

Arzel Heat PumPro
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Installation & Operation
Instructions
Arzel
®
Zoning Technology, Inc.
4801 Commerce Pkwy. Cleveland, OH 44128
Ph: (216) 831-6068
or Toll-Free (800) 611-8312 Fax: (216) 831-6074
www.arzelzoning.com
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Summary

Product Overview

Pro-Active Staging

System stages up automatically to avoid low supply air temps when heat pump capacity is insufficient.

Zone Weight Staging

Air handler stages independently from compressor/aux heaters, matching CFM to ductwork.

Thermostat Compatibility

Compatible with any conventional 24VAC thermostat including wireless, auto/manual, and programmable.

Humidification & Dehumidification

Controls 24VAC humidifier and can function as a whole house dehumidifier.

Additional Built-in Controls

Includes Dual Fuel control, Leaving Air Temperature settings, and Outdoor Air Temperature sensor.

INSTALLATION PRECAUTIONS

WARNING

Disconnect power before wiring, ensure HVAC compatibility, comply with codes, use safety gear.

CAUTION

Indoor use only, touch ground before handling, install between 40-140°F, check operations.

GENERAL SYSTEM OPERATION

Thermostat calls initiate HVAC operation and damper positioning. Mini pump activates dampers.

Installation & Setup Instructions

Install Dampers and Tubing

Install dampers into ductwork, orient port upstream, use one tubing run per zone.

Mount Control Panel

Mount vertically on exterior non-condensing wall, away from ductwork or equipment.

Connect Thermostats

Install thermostat per zone, use 18-gauge wire, and document locations.

Connect Equipment

Connect HVAC outputs to equipment using 18-gauge wire for air handler and condenser.

Connect Transformer

Connect R and C power input terminals to the 40VAC transformer.

Connect Sensors

Install LAT in supply duct and OAT outdoors; connect wires to terminals.

Start-Up Wizard

Power on the panel and follow the on-screen Set-Up Wizard instructions.

LAT & OAT Sensor Installation

Installation Notes

Sensors are identical; connect to board, use 18-3 wire if needed, keep power off.

LAT Sensor Installation

Install in supply trunk, downstream of heat exchanger, before dampers; avoid direct line of sight.

OAT Sensor Installation

Choose location: out of sunlight, above snow level, accessible; drill hole and mount sensor.

Alternative Sensor Mounting

Mount sensor inside outdoor condensing unit, away from equipment influence.

Pump Operation

Air Pump Operation

Pumps start with calls, position dampers, stop 3 min after last thermostat satisfied.

Manual Pump Switch (MPS)

Test damper system, bypass zoning. Starts pumps manually, opens dampers with Power switch OFF.

Bypass Zoning System Steps

Steps to bypass system: turn PWR OFF, disconnect thermostat, turn MPS to manual.

LCD Display Description

Status Message Menu

Explains status messages like Below Balance Point, Capacity Stage-Up, Resistance Lockout OAT.

Sequence of Operation

On a Call for Heat

Details thermostat signals, pump activation, and system staging for heating calls.

On a Call for Cooling

Details thermostat signals, pump activation, and system staging for cooling calls.

Set-Up Wizard

Show Temperature in

Determines temperature display scale: Fahrenheit or Centigrade.

Priority Settings

Allows mode interruption: Automatic, Heating, Cooling, or Zone Weight Priority.

Zone 1 Thermostat Type

Type of T-Stat used on Zone 1: Heat Pump or Heating/Cooling.

Zone Weights

Enter ductwork % to system capacity for each zone to set priority.

AH Stage-up Threshold %

Air handler stage-up threshold for Y2/W2 engagement based on ductwork percentage.

Heat Stage Threshold

Min leaving air temp for comfort at 30°F OAT; adjusts with OAT.

Cool Stage Threshold

Max cooling supply air temp for Y2 energization if LAT not met.

Balance Point OAT

Sets OAT for heat pump operation vs. fossil fuel furnace operation.

Resistance Lockout OAT

Sets OAT to lock out Aux Heat (Electric Resistance).

Cooling LAT Low Limit

Min supply air temp in cooling cycle to prevent coil freezing.

Type of Back-up Heat

Specify Aux 'Back-Up' heat type when heat pump can't maintain threshold.

Dehum Caller Voltage

Required voltage for dehumidification call; set to 24v if unused.

Secondary Purge Time

End-of-cycle purge time to diffuse residual heating/cooling; opens all dampers.

Dehumidification Cycle Time

On Cycle time limit to prevent over-cooling space after cooling set-points.

Cooling Low Ambient Lock

Min OAT for mechanical cooling operation; locks out Y output.

Reversing Valve Energized

Set mode for reversing valve energization in heating or cooling.

Use Balance Point for Electric

Allows Balance Point to be used on all-electric systems.

System Commissioning

Damper Verification

Verify damper operation: set thermostats OFF, turn system ON, check airflow at registers.

Bypass Adjustment & Checkout

Adjust bypass for noise, verify closure with larger zone calls.

Air Handler & Heat Threshold Checkout

Checkout staging: remove LAT sensor, initiate heat calls, observe Y1, G, Y2, W1, W2 signals.

Cooling Stage Threshold Checkout

Checkout cooling staging: remove LAT sensor, initiate cooling calls, observe Y1, G, O, Y2 signals.

Balance Point Checkout (Fossil Fuel Backup)

Checkout balance point: adjust setting or submerge sensor, initiate heat call, observe W1 signal.

Customer Orientation

Review Set-Up Wizard, explain system function, advise on energy-saving settings.

Remote Emergency Heat Switch

Wire remote switch across Zone 1 'R' & 'E' terminals to engage emergency heat.

Ezy-Slide Damper Install

Apply Installation Template

Apply template with Air Flow Arrow pointed towards register for damper installation.

Cut Out Triangle for Damper

Drill 3/4" holes at corners and 4-1/8" screw holes for template opening.

Ezy-Slide Damper Install cont.

Insert Damper Blade

Hold damper closed, insert blade at wide end of triangle.

Twist Damper into Position

Rotate damper 180 degrees with tubing port facing main duct after insertion.

Ezy-Slide Damper Install cont.

Fasten Damper with Screws

Secure damper at two corners, add two more screws, tighten to seal gasket.

Attach Air Line to Damper

Cut 3/4" section from 'Homerun Tube', insert tee to connect to damper.

Ezy-Slide Damper Install cont.

Final Damper Installation Check

Check tubing neatness and organization for quality workmanship.

Rectangular Damper Install

Rectangular Damper Installation

Angle blade corner to corner, slide into opening, align and screw into duct.

Did You Know? FACT System

Online Resources

Access marketing, literature, videos, guides, manuals, and webinar recordings online.

Overview

The Arzel HeatPumPro is a non-proprietary residential and light commercial zoning system designed for heat pump or standard heat/cool control. It aims to enhance system performance and deliver precise heating and cooling to different areas of a home or building, maximizing efficiency and effectiveness.

Function Description:

The HeatPumPro system allows users to increase comfort by directing conditioned air to separate areas (zones) based on each zone's thermostat setting. It conserves energy by adjusting thermostat settings in unoccupied areas to energy-saving levels. When a zone calls for heating or cooling, the appropriate HVAC equipment is activated, and dampers in non-calling zones close, directing conditioned air to the calling zone(s) until the thermostat is satisfied. The system responds to each thermostat on a first-call/first-serve basis, but can be programmed for alternate priority approaches such as Automatic Priority (first-call/first-serve), Heat Priority, Cool Priority, or Zone Weight Priority. Users can also circulate air in individual zones by selecting the "Fan ON" function on each thermostat.

Pro-Active Staging: The system automatically "stages-up" to prevent low supply air temperatures when the heat pump's capacity is insufficient. It measures outdoor air temperature to control staging decisions based on calculated heating requirements, reducing or eliminating the need for two-stage thermostats.

Staging Based upon Zone Weight: The air handler or blower stages independently from the compressor and electric auxiliary heaters. Zone Weight staging of the blower reduces or eliminates the need for a bypass and matches the CFM to available ductwork. The HeatPumPro can also slow the air handler speed to increase latent heat removal during dehumidification cycles.

Broad Thermostat Compatibility: It is compatible with any conventional 24VAC thermostat, including wireless, auto/manual changeover, programmable, and non-programmable models. Zone 1 accepts any heat/cool or heat pump thermostat, allowing for convenient control of emergency heat. Zones 2-4 require standard four or five-wire single-stage heat/cool thermostats only.

Humidification and Dehumidification: With a simple humidistat, the HeatPumPro can control a 24VAC humidifier, including opening and closing a humidifier bypass damper. It can also act as a whole-house dehumidifier, engaging low-stage cooling (Y1) with low-stage blower speed (G) and opening all zone dampers. When used with equipment that has a dehumidification function, the HeatPumPro passes the dehumidify signal from Zone 1 through the output terminals.

Built-in Controls:

  • Full function Dual Fuel control.
  • Leaving Air Temperature (LAT) settings (High/Low) for equipment protection at reduced CFM operation and stage-down capacity control.
  • Outdoor Air Temperature (OAT) sensor provides an outdoor reset function, balance point control, auxiliary resistant heat lockout, and low ambient cooling lockout.

Important Technical Specifications:

  • Power Input: 24VAC (Arzel transformer connections "R" & "C" (40VA)).
  • Fuse: 2-Amp fuse for protection against thermostat wiring shorts.
  • Thermostat Wiring: 18 gauge, multi-conductor, solid thermostat wire.
  • Sensor Wiring: Three conductors (red, white, black) for LAT and OAT sensors.
  • Operating Temperature: 40°F to 140°F (non-condensing area).
  • Damper Operation: Vacuum opens, pressure closes.
  • Purge Time: Adjustable Secondary Purge Time (0 to 180 seconds) to open all zone dampers for a soft start.
  • Compressor Lockout: 4-minute timed off cycle.
  • Dehumidification Cycle Time: Adjustable 5-15 minutes ON cycle, fixed 10 minutes OFF cycle.

Usage Features:

  • Simple Operation: Set or program each zone's thermostat to desired comfort/set-back settings.
  • LCD Display: Provides all system information at a glance and simplifies setup using a guided Set-Up Wizard. Displays operating software version, HVAC outputs, energized outputs, outdoor ambient temperature, zones being served, sum of zone weights, leaving air temperature, compressor stages, and purge time remaining.
  • Set-Up Wizard: Accessed by pressing the red "RESET" button and then the blue "ENTER" button. Allows customization of control sequences, balancing energy usage, comfort, and equipment operation. Settings are held in memory even if power is interrupted.
  • Manual Pump Switch (MPS): Allows testing of the damper system and bypassing the zoning system in emergencies. Starts pumps manually and opens all zone dampers when the power switch is OFF.
  • Damper Installation: Ezy-Slide dampers install directly into new or existing ductwork. A template is provided for precise cutting and mounting.
  • Remote Emergency Heat Switch: Can be wired to Zone 1 "R" and "E" terminals to engage auxiliary heat mode if the Zone 1 thermostat is not a heat pump model or lacks an "E" circuit.

Maintenance Features:

  • Warranty: Limited lifetime parts warranty, activated by online registration within 90 days of installation. Unregistered systems receive one year parts warranty.
  • Troubleshooting: The LCD display provides "ILL" (illegal) call indicators for input signals that don't make sense. Status Message Menu shows staging occurrences, Balance Point status, and LAT limit functions.
  • Technical Support: Available Monday-Friday 8 AM - 5 PM EST by calling 1-800-611-8312. Serial number required for support.
  • Online Resources: Access to marketing and technical literature, installation and troubleshooting videos, tech guides, charts, manuals, and webinar recordings via a contractor portal.
  • Sensor Installation: LAT sensor in the supply duct (12-18 inches from plenum, before dampers). OAT sensor outdoors (preferably north side, out of direct sunlight, above snow level, accessible for service).
  • Bypass Adjustment: Allows adjustment of bypass to eliminate objectionable air noise when a single zone calls, ensuring maximum airflow without excessive noise.

The HeatPumPro is designed for indoor use only, and proper grounding and adherence to electrical codes are essential for safe and effective operation.

Arzel Heat PumPro Specifications

General IconGeneral
BrandArzel
ModelHeat PumPro
CategoryFire and Smoke Dampers
LanguageEnglish