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For your furnace type. Section 1-59MN7A & 987MA 4-Way Multipoise, Hot Surface Ignition, Modulating Condensing Furnaces. This kit is designed for use in furnaces with 60,000 through 120,000 Btuh gas input rates. Section 2-59TN6A, 986TA, PG96VAT, 4-Way Multipoise, Hot Surface Ignition, 2-Stage, Variable-Speed Condensing Furnaces. – All sizes meet ENERGY STAR ® Version 4.1 criteria for gas furnaces: 95%+ AFUE – Cabinet air leakage less than 2.0% at 1.0 in. And cabinet air leakage less than 1.4% at 0.5 in. When tested in accordance with ASHRAE standard 193: LIMITED WARRANTY. Payne Gas Furnace Installation Manual Furnace Payne PG9MAB Series A Installation Manual 4-way multipoise fixed-capacity dual-vent condensing gas furnace sizes 040 thru 140 series a (64 pages) Furnace Payne. PG96VAT Product Data PAYNE GAS FURNACE OWNER'S MANUAL Pdf Download ManualsLib View and Page 2/15. Both furnace blowers operate simultaneously so air flows through the duct work rather than recirculating in a loop between the furnaces. Twinned two-stage furnaces can only operate as staged units. With the two-stage furnaces, low-heat in both furnaces is used for first-stage heat, and high-heat in both furnaces is used for second-stage heat.
Brand: Payne
Category: Furnace
Type: Product data for Payne PG96VAT
Pages: 16 (1.76 Mb)
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Hi there,
I recently had a new Payne PG96VAT 2-stage/variable speed furnace installed along with a Honeywell small bypass humidifier and third generation Nest learning thermostat. Following the installation I read the furnace installation manual and have read the forums including asked questions of my HVAC tech about the installation which on hindsight I should have done earlier.
Based on my current knowledge I'm questioning some of the dip switch settings that were configured for my new furnace. See below:
SW1-2 Low Heat Only (Adaptive Heat Mode) - OFF
I have a two-stage Nest thermostat with W2 wire connected that is capable of controlling the staging. I did post this in another thread, and was informed that this should have been set to ON.
SW1-3 Low Heat Rise Adjustment - OFF
Manual says that this should be set to ON when using a bypass humidifier to increase low heat airflow by 18% to compensate for increased return air temperature. Should this not have been set to ON?
SW1-4 Comfort/Efficiency Adjustment - ON
Manual says that with this set to ON low heat airflow is reduced by 7% and high heat airflow by 10% for comfort. Is having this setting ON and SW1-3 OFF not detrimental to the furnace as the bypass airflow is not compensated for for low heat airflow?
SW1-5 CFM per ton adjust - ON
Turned ON for 400 CFM per ton cooling settings in conjunction with SW2-2 in OFF position. Default setting is OFF for 350 CFM per ton. I trust that this is acceptable for climate zone 6.
SW2-3,4,5 Continuous Fan - OFF, OFF, ON
As per the manual, this dip switch setting is for 1050 CFM based on 350 CFM per ton, so approximately 1200 CFM for 400 CFM per ton. Technician informed me that this was set to 40% of maximum cooling airflow (600 CFM) which is impossible based on this setting.
SW2-6,7,8 Cooling Airflow - ON, OFF, ON
As per the technician, cooling airflow was set for maximum. This setting is the same as the default setting with all dip switches off which is for a 3 ton unit which is 1190 CFM based on 350 CFM per ton at 0.5 ESP In. WC., so approximately 1370 CFM at 400 CFM per ton. This is significantly more than what is required for my 2-ton condenser unit which is 800 CFM. I don't believe that this was configured correctly at all and this would need to be matched to the proper fan speed setting based on the ESP in the system.
I'm hesitant in calling the technician back to have this configured properly as I'm not a subject matter expert and don't want to offend anyone, but I believe my new furnace is not configured optimally.
I'm contemplating calling another technician and to have them commission the system altogether.
Thanks in advance for any feedback.