Fan-Pressure Optimization. As cooling loads change, the VAV terminals modulate to vary airflow supplied to the zones. This causes the pressure inside the supply ductwork to change. In many systems, a pressure sensor is located approximately two-thirds of the distance down the main supply duct....
-D-188-124A 2 FEBRUARY 1984 MILITARY STANDARD GROUNDING, BONDING AND SHIELDING for Common Long Haul/Tactical Communication Systems including Ground Based Communications- Electronics Facilities and Equipments "L-" AMSC NtA DISTRIBWION STATEMENT A. Approved for public rdease; distributi~ AREA SLHCITCT...
52、n and Insulation,Must leak-test ductworkif design static pressure 3 in. wg,mandatory HVAC provisionsCompletion Requirements,Documentation within 90 days of system acceptance: Drawings of actual installation Submittal data Operation and maintenance manuals Service agency information Control sequences 53...
coupling capacitor voltage transformers) No Transmitters (e.g., differential pressure transmitters, pressure transmitters, flow transmitters, level transmitters, radiation transmitters, static pressure transmitters) No Hydraulic-Operated Valves Yes (Bodies) Explosive Valves Yes (Bodies) Manual Valves Yes (Bod...
4.5.7 Duct Static Pressure Taps. Shall be per ASHRAE Standard 37 (Section 6). Figure 5. Typical Free Inlet Test Setup 4.5.6 Ductwork Required for Testing. Ductwork attached to the unit under test may influence the sound measured. Thus, care should be taken in the attachment and treatment ...
需要金币:*** 金币(10金币=人民币1元) AHRI Standard 210.240-2023 (2020)北美单元式空调能效认证.pdf 关闭预览 想预览更多内容,点击免费在线预览全文 免费在线预览全文 AHRI Standard 210/240 2023 (2020) Standard for Performance Rating of Unitary Air-conditioning Air-source Heat Pump Equipment Price $15....
door air mandatory HVAC provisions Construction Insulation Insulation must be suited to environment Duct, plenum insulation Climate zone Location Piping insulation Heating, domestic hot water, or cooling Temperature Pipe size Construction and Insulation Must leak-test ductwork if design static pressure 3 ...
DIN 11832-1 农场和牲畜饲养设备.输送液态粪肥的管道用阀门管件.第1部分:最大1巴的静压力闸阀 Farm and livestock husbandry equipment; shut-off valves for slurry pipes; gate valves for static pressure of max. 1 bar DIN 1185-1 排水.管道排水、明渠排水和底层土壤改良的地下水控制.一般说明和特殊情况 ...
DIN 14330-1S 28 消防软管用标称压力PN16 C型铝合金联轴器Aluminium alloy delivery coupling type C; nominal pressure 16, used for fire hoses S 28 DIN 14330-2S 38 消防软管用标称压力PN16 C型铝合金联轴器Aluminium alloy delivery coupling type C; nominal pressure 16, used for fire hoses S 32 ...
需要金币:*** 金币(10金币=人民币1元) AHRI_Standard_1230-2021北美变流量空调能效认证.pdf 关闭预览 想预览更多内容,点击免费在线预览全文 免费在线预览全文 AHRI Standard 1230 (I-P) 2021 Standard for Performance Rating of Variable Refrigerant Flow (VRF) Multi- Split Air-Conditioning and Heat Pump Eq...