Circuit Breaker Sizing on HKSC10 and Smaller Heat Kits

Goodman released the following bulletin, G-GN-OT-1494, regarding circuit breaker sizing on heat kits:

Circuit breakers furnished with the heat kits of 10kw and less are for safety disconnect purposes only and are not supplied to be used for circuit protection. The 60 amp breaker has been tested and approved by ETL to be used with the HKSC10 and smaller heat kits. The breaker is sized for 208/230V operation and approved by ETL for use with both voltages.

Heat Kits are shipped with label indicating “CIRCUIT BREAKER IS NOT INTENDED FOR BRANCH CIRCUIT PROTECTION. IT SERVES AS A DISCONNECT ONLY.”

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At installation of the heater, this label should be affixed to the front of the indoor unit.

Note that the circuit breaker for the air handler branch circuit protection must be properly sized according to the MOP value. Please reference the product specification sheet for these values.

Paragraph 90.7.of the NEC states the following:
(It is the intent of this Code that factory-installed internal wiring or the construction of equipment need not be inspected at the time of installation of the equipment, except to detect alterations or damage, if the equipment has been listed by a qualified electrical testing laboratory that is recognized as having the facilities described in the preceding paragraph and that requires suitability for installation in accordance with this Code.)

If you have questions about this bulletin, HVAC Distributors customers can reach out to our Technical Service department at 800.228.4822 x5.

Updates to Lochinvar After-Hours Tech Support

Lochinvar has announced new hours for its Technical Service Hotline:

After Hours Support: 5 PM EST – 8 PM EST (Monday – Friday)
Emergency Support: 9 AM EST – 5 PM EST (Saturday – Sunday)
Holiday Support: 9 AM EST – 5 PM EST (Closed Thanksgiving Day & Christmas Day)
Hotline: 1.800.722.2101

This support is in addition to the support you receive as an HVAC Distributors customer.

HVAC Distributors’ Tech Service Department is available Monday – Friday from 8 AM – 5 PM EST by calling 1.800.228.4822 x 5.

Our Tech Service Department provides technical support on all of the products that we sell, which saves you time from calling individual manufacturer tech lines.

Defrost Timer Change on AVZC18/20 SEER Inverter Heat Pump Units

Goodman released Service Bulletin SR-072, regarding a software change on AVZC18 and AVZC20 Inverter Heat Pump units:

This bulletin is to inform you of a software change made to the Inverter Heat Pump models listed above. For units with a serial number prefix of 1706 and later the factory default setting for the defrost interval has been changed from 30 minutes to 120 minutes.

The defrost time interval can still be field adjustable to 30, 60, 90 or 120 minutes between defrost cycles to suit weather conditions and unit performance. This setting can be adjusted in the Comfortnet User Menu of the CTK04AE thermostat by selecting “Inverter” – “Heat Set Up” – “Defrost Interval”. When in this Sub Menu select 30, 60, 90,120 minutes setting.

NOTE: Oil Return Mode: In order to properly return the oil to the compressor, compressor speed may periodically adjust to assist oil circulation. These Inverter units utilize an oil return mode to properly return oil to the compressor which functions similar to a defrost cycle and may create the appearance of the unit having unnecessary defrosts.

If you have questions about this bulletin, HVAC Distributors customers can reach out to our Technical Service department at 800.228.4822 x5.

Incorrectly Labeled Transformers – 208/240 Volt Models

Goodman recently released Service Bulletin SA-029, regarding incorrectly labeled transformers affecting models AWUF, ACNF, ARPT, ARUF, ASPT, ASUF, AVPEC, AVPTC, AWUT, DVxx, FXTQ, MBR, MBVC, APC, APD, APG, APH, DCC, DCG, DCH, DPxx, DSC, DSG, DSH, DTC, DTG, DTH, GPC, GPD, GPG, and GPH.

From Goodman:

It has come to our attention that some recent Part# 0130M00138 transformers were incorrectly labeled. This could potentially affect the voltage adjustment from 240 volts to 208 volts. We are only aware of transformers on units serial date code 1609xxxxxx through 1612xxxxxx as potentially having incorrect labels.

Please refer to the illustrations of the transformers shown below and the listed instructions with each picture for proper wiring when adjusting the transformer from 240 volts to 208 volts. Incorrect wiring could result in damage to the transformer and 24 volt circuit components.

Note: No wiring change necessary if unit voltage is 240 volts. All product equipment is preset for 240 volts.

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If you have questions about this bulletin, HVAC Distributors customers can reach out to our Technical Service department at 800.228.4822 x5.

Beckett Technical Advisory Bulletin on Cleancut Pumps

Beckett recently released the following bulletin regarding Cleancut Pumps (A2EA-6527):

This bulletin advises that Cleancut pumps A2EA-6527 manufactured during months March, April, and May 2016 might present a tightness issue on Inlet/Return ¼-18 NPTF plugs.

In order to identify such pumps, it is necessary to check the date stamped on the top of the body:

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  1. Before starting your burner, confirm the pump is not in the affected date range.
    If the unit is in the date range, follow steps 2 and 3.
  2. Carefully verify the tightness of Inlet/Return plugs.
  3. For any recognized or suspected leak, unscrew plugs and apply pipe sealant, and re-insert them with a fitting torque of 12 to 20 Ft.Lbs.

If you have questions about this bulletin, HVAC Distributors customers can reach out to our Technical Service department at 800.228.4822 x5.

Economizer Installation Wiring for Residential Package Units

Goodman has recently released Service Bulletin SP-038 Rev. 1 regarding economizer installation wiring for residential package units.  The purpose of this bulletin is to provide instructions for the installation of an economizer on “H” and “M” Series residential package units that do not have a factory installed economizer wiring harness.

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CTK03 and CTK04A Displaying Improper Outdoor Temperature

Goodman has recently released Service Bulletin SR-066 regarding CTK03 and CTK04A thermostats displaying improper outdoor temperatures.

From Goodman:

On a limited amount of communicating systems, we have had reports of CTK03 and CTK04A thermostats not displaying the correct outside temperature. The root of this problem appears to be communications between the thermostat and outdoor sensor. This condition may cause an inaccurately initiated lockout of the compressor, errant dual fuel operation or improper electric auxiliary heat cycling in heat pump systems. Work is being done to identify the issue’s root cause.

As an interim solution, you can install a Honeywell RedLINK Wireless Outdoor Sensor to resolve the issue and also provide the customer with current outdoor relative humidity. The part number for the Honeywell Wireless Outdoor Sensor is C7089R1013; it can be ordered from your local distributor.

We will provide labor at the servicer’s Class “A” labor rate for installation of the RedLINK Outdoor Sensor when addressing the sticking outdoor temperature display condition. Claims must be filed using Warranty Express as an Authorization type claim, using Authorization Code number 8792.

  • The claim for the part and labor should be filed as one claim, using the Dealer’s account number.
  • The CTK03 and CTK04A should be filed as a part using the matched piece of equipment for the unit information.

All claims for this project must be submitted within the first 12 months after installation.

The Honeywell RedLINK Wireless Outdoor Sensor (C7089R1013) is in stock at HVAC Distributors and can be ordered by phone or through Web Order Entry.

If you have questions about this bulletin, HVAC Distributors customers can reach out to our Technical Service department at 800.228.4822 x5.