冷凝水管的安装
3.1.7.冷凝水管的安装
在风机盘管机组、整体式空调器或者组合式空调机组等设备运行的过程中，都会产生冷凝水，这些冷凝水如不及时排走，会给工程造成严重后果。
由于本工程标准层高为3200mm，层高的限制使本工程的冷凝水管道应尽量分成小区域进行敷设，以最大可能的减少冷凝水水平管道的长度，使冷凝水及时排出。
冷凝水管道安装时要结合幕墙龙骨间隔、铝板与结构间隙等空间敷设，同时也要结合暖通、建筑节点、室内吊顶图，与外立面幕墙安装及室内装饰紧密配合，保证美观。
冷凝水管道在设计时如果发现与现场冲突，要及时与设计单位协商沟通，在保证外观的前提下做局部调整，。
3.1.7.1冷凝水管排放的施工要求及布置
（1）冷凝水管排放的施工要求：
1）冷凝水管安装前须将其内壁清理干净。
2）冷凝水管对接或拐弯时须用直通和弯头粘接。
3）冷凝水管须以设计规定的坡度排放,以保证出水畅通。
4）所有粘接须尽可能牢固，严防漏水。
5）保温管与冷凝水管须接触紧密，外观漂亮。
6）冷凝水管每1.5-2m左右须装吊钩。
7）冷凝水管在安装完毕后需注水试漏。
（2）冷凝水管的布置
1）若邻近有下水管或地沟时，可用冷凝水管将空调器接水盘所接的凝结水排放至邻近的下水管中或地沟内。
2）若相邻近的多台空调器距下水管或地沟较远，可用冷凝水干管将各台空调器的冷凝水支管和下水管或地沟连接起来。
3.1.7.2冷凝水管管径的确定
1）直接和空调器接水盘连接的冷凝水支管的管径应与接水盘接管管径一致（可从产品样本中查得）。
2）需设冷凝水干管时，某段干管的管径可依据与该管段连接的空调器总冷量 (KW)按下表查得。
说明：DN=15mm的管道不推荐使用。
立管的公称直径，应与同等负荷的水平干管的公称直径相同。
3.1.7.3冷凝水管保温
所有冷凝水管都应保温，以防冷凝水管温度低于局部空气露点温度时，其表面结露滴水。
采用带有网络线铝箔贴面的玻璃棉保温时，保温层厚度可取25mm。
3.1.7.4冷凝水管设计注意事项
1）沿水流方向，水平管道应保持不小于千分之一的坡度；且不允许有积水部位。
2）当冷凝水盘位于机组负压区段时，凝水盘的出水口处必须设置水封，水封的高度应比凝水盘处的负压（相当于水柱高度）大50％左右。
水封的出口，应与大气相通。
3）采用聚氯乙烯塑料管时，一般可以不必进行防结露的保温和隔汽处理。
4）采用镀锌钢管时，通常应设置保温层。
5）冷凝水立管的顶部，应设计通向大气的透气管。
6）设计和布置冷凝水管路时，必须认真考虑定期冲洗的可能性，并应设计安排必要的设施。
7）冷凝水管采用PVC管道时，应布置美观粘接牢固，试水试漏时，应打开设备的放气装置，让水充满整个PVC管道，持续24小时，以管道无渗漏，设备凝结水盘不承水为合格。
空调冷凝水安装工艺
8.4正确使用个人防护用品和安全防护措施，进入现场施工，必须戴好安全帽，禁止穿拖鞋，皮鞋或赤脚。在没有防护设施的高空。悬崖和陡坡施工，必须细好安全带，禁止穿硬底鞋登高作业，上下交叉作业有危险的和入口要求防护棚或其它隔离设施。
3.4.4、管段调直要放在调管架上或调管平台上，一般两人操作为宜，一人在管段端头目测，一人在弯曲处用手锤敲打，边敲打，边观测，直至调直管段无弯曲为止，并在两管段联接点处标明印记，卸下一段或数段，再接上另一段或数段直至调完为止。
3.4.5对于管段联接点处的弯曲过死或直径较大的管道可采用烘炉或气焊加热到600-800℃（火红色）时，放在管架上将管道不停的转动，利用管道自重使其平直，或用木版垫在加热处用锤轻击调直，调直后在冷却前要不停的转动，等温度将到适当时在加热处涂抹机油。凡是经过加热调直的丝扣，必须标号印记，卸下来重新涂铅油缠麻，再将管段对准印记拧紧。
3.1.2用砂轮锯断管，应将管材放在砂轮锯卡钳上，对准画线卡牢，进行断管。断管时压手柄用力要均匀，不要用力过猛，断管后要将管口断面的铁膜、毛刺清除干净。
3.1.3用手锯断管，应将管材固定在压力案的压力钳内，将锯条对准画线，双手推锯，锯条要保持与管的轴线垂直，推拉锯用力要均匀，锯口要锯到底，不许扭断或折断，以防管口断面变形。
（2） 排水塑料管必须按设计要求装伸缩节，如设计无要求，伸缩节间距不得大于4cm（检验方法：观察和尺量检查）
（3） 排水系统竣工后的通水试验结果必须符合设计要求和施工规范 冷凝水管的三通及四通口数量与空调室内机数量对应一致。
空调冷凝水管安装规范
空调冷凝水管安装规范空调冷凝水管安装规范空调冷凝水管是空调系统中一项重要的组成部分，它的安装质量直接影响到空调系统的正常运行和使用寿命。
以下是关于空调冷凝水管安装的一些规范，以确保安全和可靠的使用：1. 管道选材：冷凝水管道一般应采用高质量的PVC或者金属材料，具有良好的耐腐蚀性和耐高温性能。
2. 管道铺设：冷凝水管道应避免与电源线、信号线等其他线路横向交叉，且应保持一定的距离，避免互相干扰。
管道铺设应尽量避开易受损的区域和危险区域，如阳光直射、高温区域等。
3. 管道固定：冷凝水管道应有足够的支撑和固定，避免在使用过程中产生共振或者摇晃。
固定应使用专用的管夹或者固定架，均匀分布在管道各个连接点，并确保固定牢固。
4. 弯头和三通设置：在冷凝水管道中，存在弯头和三通等接头，应尽量减少接头数量并采用半径较大的弯头，以减小水流的阻力，避免堵塞和漏水现象。
5. 管道斜度：冷凝水管道应设置一定的斜度，以确保水能够顺利排出。
一般来说，每米管道的坡度不应小于3毫米。
6. 底板防漏：冷凝水管道的底板应采用防漏措施，以防止水渗漏到楼下。
可以在底板下铺设防水层，或者安装防漏板等措施。
7. 排水口设置：冷凝水管道应设置合适的排水口，以便将冷凝水及时排除。
排水口应设置在易于清理和维护的位置，并保持畅通。
8. 周期性检查：冷凝水管道在安装完成后，应定期检查一次，以确保其正常运行。
可检查冷凝水管道是否有渗漏和堵塞的情况，及时处理。
9. 安全阀设置：对于某些特殊情况下水流量较大的空调系统，应设置安全阀，以防止管道过载而破裂。
10. 操作规范：冷凝水管道在日常使用中，应注意避免过多沉积物或者杂质进入管道，以防止堵塞和水泄漏。
总之，空调冷凝水管的安装规范是确保空调系统正常运行和使用寿命的重要保障。
以上规范仅供参考，具体安装过程中还需根据实际情况进行具体规划和施工。
在安装过程中，要严格按照相关标准和要求操作，确保安全和可靠。
空调冷凝水管安装规范
定期清理冷凝水管内的杂质和沉淀物
定期检查：建议 每月至少检查一 次冷凝水管，查 看是否有堵塞或 沉淀物堆积。
清理方法：使用 高压水枪或专用 清洗设备对冷凝 水管内部进行清 洗，确保管内无 杂质和沉淀物。
注意事项：在清 理过程中，应注 意不要损坏管壁 或密封件，以免 影响冷凝水管的 正常使用。
维护建议：建议 定期对冷凝水管 进行全面检查和 维护，确保其正 常运行和使用寿 命。
检查冷凝水管的耐 压性能是否符合要 求，如是否能够承 受足够的压力。
确定冷凝水管的走向和坡度
确定冷凝水管的 走向：根据空调 设备的布置和建 筑物的结构，合 理规划冷凝水管 的走向，尽量减 少管路的弯曲和 交叉，确保管路 畅通。
确定冷凝水管的 坡度：为了保证 冷凝水能够顺利 排出，需要合理 设置冷凝水管的 坡度。一般来说， 坡度不宜太小， 应控制在千分之 五以上。
固定吊架和托架 ，确保稳定牢固
连接冷凝水管
确定冷凝水管的长度和直径，根据需要进行切割和连接 检查冷凝水管是否畅通，无堵塞或渗漏 将冷凝水管连接到蒸发器或冷凝器上，确保连接处密封良好 安装完成后，进行测试，确保无渗漏或堵塞现象
安装水封和排水口
安装水封：确保水封的型号与设备匹配，并安装在冷凝水排放管上。 安装排水口：根据设计图纸确定排水口的位置，并确保排水口与排水管道连接顺畅。 检查水封和排水口：在安装完成后，应检查水封和排水口是否正常工作，确保无泄漏现象。 注意事项：安装时应遵循相关规定和标准，确保安全和质量。
固定冷凝水管
使用专用卡子进 行固定，确保管 子不晃动
在墙角或吊顶内 安装管子，保持 水平或稍微倾斜
连接冷凝水排放 口，确保连接处 密封良好
安装完成后进行 测试，确保无渗 漏现象
空调系统中的冷凝水管设计与安装全套
空调系统中的冷凝水管设计与安装全套-冷凝水管的选配和安装原则1、选配标准首先，我们需要考虑选择合适的管材。
通常情况下，常见的冷凝水管材质包括PVC和铜管。
PVC管具有轻便、抗腐蚀、低成本等优点，适用于大多数场景。
而铜管则更坚固耐用，适用于高负荷和高温度的系统。
因此，在选择管材时，需要根据具体的空调系统要求和建筑环境来做出决策。
其次，管径的选择也至关重要。
过小的管径会导致冷凝水排放不畅，容易堵塞，而过大的管径则会浪费材料和空间。
选择管径应该根据空调系统的容量和冷凝水的流量来确定，确保系统运行顺畅。
最后，管道的长度也需要根据建筑布局和地理环境来选择。
过长的管道可能会增加系统的阻力，而过短的管道则可能无法满足需要。
在选择长度时，需要充分考虑冷凝水的排放点和系统的布局。
2.安装原则为了保证冷凝水管的顺畅排水，以下是一些安装原则：(1)管道的坡度：冷凝水管应该具有适当的坡度，以确保水能够顺利流向排水点。
通常，每米长度的坡度应在5毫米到10毫米之间。
(2)弯头数量的最优化：过多的弯头会增加水流的阻力，降低排水效率。
因此，在设计中应尽量减少弯头的数量，或者使用弯头半径较大的型号。
(3)管道支架的稳固性：管道支架应安装稳固，以防止管道下垂或摇晃。
这有助于保持管道的坡度和排水效率。
(4)系统兼容性：不同类型的空调系统对冷凝水管材质和尺寸有特定的要求。
在安装新管道或更换现有管道时，必须确保其与系统兼容。
这包括管材的选配、管径的匹配以及连接方式的符合。
二冷凝水管设计安装的步骤(1)初步设计：从建筑结构和空调系统的布局出发，规划管道的初步走向。
考虑建筑的结构特点和使用功能，优化管道布局。
(2)详细规划：深入细化管道的具体布局，包括连接点、转弯处和坡度。
讨论如何在设计中融入检修和清洁的便利性。
(3)安装准备：列出安装所需的工具和材料清单，包括管道、接头、固定件和密封材料等。
准备阶段还包括施工人员的培训和安全教育。
(4)实际安装：实际安装阶段涵盖了从管道铺设到连接、固定以及密封的具体步骤。
冷凝水管安装工艺流程
冷凝水管安装工艺流程下载温馨提示:该文档是我店铺精心编制而成，希望大家下载以后，能够帮助大家解决实际的问题。
文档下载后可定制随意修改，请根据实际需要进行相应的调整和使用，谢谢!并且，本店铺为大家提供各种各样类型的实用资料，如教育随笔、日记赏析、句子摘抄、古诗大全、经典美文、话题作文、工作总结、词语解析、文案摘录、其他资料等等，如想了解不同资料格式和写法，敬请关注!Download tips: This document is carefully compiled by theeditor. I hope that after you download them,they can help yousolve practical problems. The document can be customized andmodified after downloading,please adjust and use it according toactual needs, thank you!In addition, our shop provides you with various types ofpractical materials,such as educational essays, diaryappreciation,sentence excerpts,ancient poems,classic articles,topic composition,work summary,word parsing,copy excerpts,other materials and so on,want to know different data formats andwriting methods,please pay attention!冷凝水管安装工艺流程一、准备工作阶段在进行冷凝水管安装之前，需要进行以下准备工作：1. 确定安装位置：根据空调系统的设计要求，确定冷凝水管的安装位置。
多联机冷凝水管安装操作方法
多联机冷凝水管安装操作方法随着现代化建筑的不断进步，人们的舒适要求也越来越高，多联机空调作为目前市面上最流行的空调类型之一，其节能、环保的功效已经深受大众的认可。
但是在多联机空调的安装过程中，冷凝水管的连接和安装是至关重要的一步。
正确的安装方式和步骤不仅能保证冷凝水的顺畅排出，还能延长空调的使用寿命，本文将介绍多联机冷凝水管的安装操作方法，希望能对广大空调安装维修人员提供一定的指导。
一、工具材料准备在安装多联机冷凝水管之前，首先需要准备必要的工具和材料。
常规情况下，需要准备冷凝水排水管、T接管、螺丝刀、扳手、万能钳、基础工具箱等。
二、准备工作在安装冷凝水管之前，需要进行必要的准备工作。
第一步是查看空调箱体的背面，确认多联机冷凝水排水口的位置，为后面的安装作好铺垫。
第二步是对接冷凝水排水管，需要将上方的侧板打开，然后将排水管伸入至约1-2厘米即可。
第三步是准备T接管，将其固定在多联机上方，保证其与排水口处于同一高度。
最后一步是在T接管和排水管之间进行连接，紧固好螺丝和扣环等配件，确保连接紧密牢固。
三、冷凝水管安装安装多联机冷凝水管的具体步骤如下：1. 将T形接头固定在空调主体上方，保证T形接头与空调主体底部平行，且两者之间距离约为10-15厘米。
2. 用钳子将T形接头固定在空调主体上方的螺丝上。
3. 在T形接头与空调主体之间连接冷凝水排水管，确保其连接紧密牢固。
在这个过程中需要特别注意排水管的长度和安装位置，不能太靠近地面，否则容易造成地面积水的情况，影响家居环境。
4. 最后在排水管的下方安装一个水尽头，保证冷凝水可以流畅的排出。
水尽头的安装位置需要在排水口的下方，距地面大概5-10厘米的位置，这样能够保证冷凝水有效排出，并达到预期的效果。
四、安装注意事项在安装多联机冷凝水管的过程中，需要注意以下事项：1. 确保连接部位牢固：在接头处使用T型管和螺丝之类的配件连接时，须将螺丝拧紧，以确保连接部位牢固可靠，不易损坏。
安装指南：冷凝锅炉冷凝排水管安装说明书
Condensing Boiler Industry guidance for installers - endorsed by HHIC membersBritish Standards, Building Regulations and industry guidance currently advise on how condensate discharge pipes should, be run either internally or externally, or a combination of both. This document gives guidance on how to install the pipes in order to reduce the possibility of freezing.However, in certain circumstances this guidance may not be sufficient to prevent freezing in extreme conditions with widespread and prolonged sub-zero temperatures.With the UK weather patterns showing more “extremes” in future due to the effects of global climate change, the following guidance updates previousrecommendations on condensate discharge pipe installation. In addition to this guidance all other technical requirements for condensate discharge installation given in British Standard BS 6798:2014, or in boiler manufacturers’ installation instructions should still be followed.****Boiler Manufacturer’s Warranty InformationIt should be noted that where the manufacturer’s instructions have not been followed then the boiler warranty may not be valid.In April 2005 revisions to the Building Regulations came into force, stat-ing that all replacement gas or oil boilers must be a condensing type. The introduction of condensing boilers has been fundamental in reducing the UK’s carbon emissions.In 2010 and again in 2018 the UK experienced prolonged spells of sub-zero temperatures down to minus 20 centigrade and below in many areas. This resulted in a significant increase in the number of calls to boilermanufacturers and heating engineers from householders with condensing (high efficiency) boilers where the condensate discharge pipe had frozen and become blocked with ice causing the boiler to shut down. In the vast majority of cases such problems occur where the condensate discharge pipe is located externally to the building for some part or all of its length.Note - the Benchmark Commissioning checklistsupplied with the boiler and detailed in the manufacturer’s instructions requires the heating engineer to confirm that the condensate drain has been fitted correctly.Summary of main requirementsInternal Condensate Pipe Discharge ConnectionWhere an installer is fitting a new or replacement boiler, the condensate discharge pipe should be connected to an internal “gravity discharge point” such as an internal soil stack (preferred method), internal kitchen or bathroom waste pipe such as sink, basin, bath or shower waste. External pipes from sink wastes or washing machine outlets should be a minimum of 30mm internal diameter, insulated with waterproof UV resistant material, terminated below the grid but above the water line and a suitable drain/leaf guard fitted. The end of the waste pipe should be cut at 45 degrees where it terminates into the grid to help reduce the potential for the pipe to freeze. Condensate PumpsWhere it is not possible to connect the boiler condensate discharge pipe to an internal “gravity discharge point” then the installer should use a condensate pump connected to a suitable internal connection point such as an internal soil stack (preferred method), internal kitchen or bathroom waste pipe such as a sink, basin, bath or shower waste.Existing InstallationsWhen servicing or repairing a boiler the heating engineer should check any boiler installations especially those that have external condensate drains to see if they can be terminated internally or upgraded to the latest guidance. The responsible person (home owner) should be advised and it is recommended that the installer completes the responsible persons frozen condensate information leaflet as a suitable means for advising the work that is required. See annex AThis guidance should be followed where work is carried out to “upgrade” the condensate discharge system to reduce the risk of freezing in extreme conditions and it is recommended that the condensate pipe is identified with a suitable label or marking even if the responsible person does not go ahead with the upgrade so as to allow easier identification in the future.Manufacturer’s instructions must be followed for the correct connection of the condensate discharge pipe from the boiler as this may vary due to the design of the boiler. For example a visible air break and trap is not required if there is a trap with a minimum condensate seal of 75 mm incorporated into the boiler. Internal Pipe Run In Unheated SpacesCondensate discharge pipes that are routed in an unheated space such as a loft or garage should be insulated to prevent freezing.Internal Condensate Pipe Discharge TerminationInternal condensate discharge pipework must be a minimum of 19mm ID (typically 22mm OD) plastic pipe or as per manufacturer’s instructions and this should “fall” a minimum of 45mm per metre away from the boiler, taking the shortest practicable route to the termination point.(45mm as per BS6798, 52mm per metre as per industry practice is specified in the following diagrams)To minimise the risk of freezing during prolonged sub-zero conditions, an internal “gravity discharge point” such as an internal soil stack (preferred method), internal kitchen, utility room or bathroom waste pipe e.g. from a sink, basin, bath or shower should be adopted, where possible.Note - A suitable permanent connection to the foul waste pipe should be used.Figures 1, 2(a), 2(b) show appropriate connection methods.182573Figure 2(a) – Connection of a condensate discharge pipe downstream of a sink, basin, bath or shower waste trap.Note – Check manufacturer’s instructions to see if an air break is required.Key 1 Boiler2 Visible air break3 75 mm trap4 Visible air break and trap not required if there is a trap with a minimum condensate seal of 75 mm incorporated into the boiler. In this case the 100 mm is measured to the trap in the boiler.5 Sink, basin, bath or shower6 Open end of condensate discharge pipe direct into gully 25 mm min below grating but above water level; end cut at 45 °Note – the maximum external condensate discharge length is 3 metres7 Sink lip8 Minimum internal diameter 19 mm 9 Pipe size transition10 Minimum internal diameter 30 mm 11 Water/weather proof insulation 12 Drain cover/leaf guard121059483761112Visible air break at plug hole – alternative connection can be below sink trap 75 mm sink, basin, bath or shower waste trap Sink, basin, bath or shower with integral overflowOpen end of condensate discharge pipe direct into gully 25 mm min below grating but above water level; end cut at 45 °12105948376The possibility of waste pipes freezing downstream of the connection point should be considered when determining a suitable connection point - e.g. a slightly longer pipe run to an internal soil stack may be preferable to a shorter run connecting into a kitchen waste pipe discharging directly through the wall to an external drain.Note - Where “gravity discharge” to an internal termination is not physically possible (e.g. the discharge point is above the appliance location, or access is obstructed by a doorway), or where very long internal pipe runs would be required to reach a suitable discharge point, then a condensate pump should be used.External waste pipes from kitchens, utility rooms or bathrooms such as sink, basin, and bath or shower waste outlets should be insulated with waterproof UV resistant, class 0 material, terminated below the grid but above the water line and a drain/leaf guard fitted. The waste pipe should be cut at 45 degrees where it terminates into the grid. (See insulation section for guidance on suitable materials).Condensate PumpsUse of a Condensate Pump to an Internal TerminationCondensate can be removed using a proprietary condensate pump, of a specification recommended by the boiler or pump manufacturer. In order to minimise the risk of freezing during prolonged sub-zero spells, one of the following methods internal to the property for terminating the boiler condensate pump to a foul water discharge point should be adopted such as an internal soil stack (preferred method), internal kitchen, utility room or bathroom waste pipe such as sink, basin, and bath or shower waste. Figure 3 shows a typical connection method.Manufacturers Instructions must be referred to when installing boiler condensate discharge pipes Manufacturers Instructions must be referred to when installing boiler condensate discharge pipes 2543112345106789External ConnectionsOnly fit an external boiler condensate drain connection if an internal gravity or pumped connection is impractical to install.The pipe work from the boiler should be of a minimum 19mm ID or as per manufacturer’s instructions and the condensate discharge pipe shall be run in a standard drainpipe material, e.g. poly (vinyl chloride) (PVC), un-plasticized poly (vinyl chloride) (PVC-U), acrylonitrile butadiene-styrene (ABS), polypropylene (PP) or chlorinated poly (vinyl chloride) (PVC-C).Note - Fixing centres for brackets should be a maximum of 300mm for flexible pipe and 500mm for solid pipe and manufacturer’s recommendations should be followed.The condensate pipe should be run internally as far as possible before going externally and the pipe diameter should be increased to a minimum of 30mm ID (typically 32mm OD) before it passes through the wall. The angle of the pipe should slope downwards by at least 3 degrees as it passes through the wall to assist in maintaining a good velocity as the condensate exits the building.The external pipe run should be kept as short as possible to a maximum of 3 metres, taking the most direct and “most vertical” route to the discharge point, with no horizontal sections in which condensate might collect.Manufacturers Instructions must be referred to when installing boiler condensate discharge pipes Manufacturers Instructions must be referred to when installing boiler condensate discharge pipes Visible air break Visible air break and trap not required if there is a trap with a minimum condensate seal of 75mm incorporated into the boiler.Soil and vent stack 450mm minimum upto three storeysMinimum internal diameter 19 mm Pipe size transition pointMinimum internal diameter 30mm Water/weather proof insulation1210594837611Alternative SolutionsCold weather protection methods approved or endorsed by boiler manufacturers and/or service organisations may be adopted if these are considered suitable by the parties involved. It is the responsibility of the manufacturer of these products to ensure they have completed the necessary testing or calculations to ensure the product offers suitable protection to prevent the condensate pipe from freezing. The product manufacturer should provide information as to what level of external temperature and for what time period the product can protect against sub-zero temperatures, i.e. -15°C for 48 hours. BS6798 refers to devices that pump the condensate produced by a condensing boiler to a fine misting nozzle in the boiler flue terminal so that the condensate is discharged with the hot flue gas. (BS6798 section 6.3.8 note 4). The boiler manufacturer’s instructions will provide advice regarding fitting and siting of the flue terminal to ensure safe disposal of the condensate.Additional MeasuresAt least one of the following measures should be fitted in addition to the measures detailed above for external condensate discharge pipes• Insulate external pipe with a minimum thickness of insulation to be 19mm “O” class PVC coated material.• Fit trace heating – with insulation as recommended by manufacturer.• Fit internal auxiliary(additional) high volume syphon unitAuxiliary Syphon – Fitted InternallyAuxiliary siphons fitted inside the premises assist with the siting of the boiler where an external condensate pipe must be fitted. The storage capacity of the auxiliary siphon increases the volume of condensate discharge reducing the risk of freezing. A further reduction in the potential for the pipe to freeze is achieved when combined with the external insulation requirements.Electric Trace HeatingTrace heating with an external thermostat can be fitted to the external condensate pipe to raise the temperature of the condensate pipe in freezing conditions. Trace heating takes the form of an electrical heating element run in physical contact along the length of the condensate pipe. The pipe is usually covered with thermal insulation to retain heat losses from the pipe. Heat generated by the element then maintains the temperature of the pipe. If such a system is used then the installation instructions of the trace heating manufacturer and any specific recommendations regarding pipe diameter, insulation, etc. should be followed. All other relevant guidance on condensate discharge pipe installation should also be followed.Insulation MaterialsInsulation used for external condensate pipes, sink or washing machine waste pipes should be of class ‘O’ grade with an outer coating that is weather proof, bird/animal proof, and UV resistant finish. A minimum of 19mm thick insulation is recommended for 32mm external pipes.Use of Air Breaks In Condensate Discharge PipesHeating engineers should follow manufacturer’s instructions on the use of air breaks in condensate discharge pipes. A visible air break is not required if the boiler condensate trap has a minimum condensate seal of 75mm incorporated into the boiler.Connecting to a rain water downpipe/External Soil StackWhen an external soil stack or rain water downpipe is used as the termination (NB only permissible if this downpipe passes to a combined foul and rainwater drainage system) an external air break must be installed between the condensate discharge pipe and the downpipe to avoid reverse flow of rainwater/sewage into the boiler should the downpipe itself become flooded or frozen.Figure 5 shows a suitable connection method. Pipe insulation should be fitted.Figure 5 – External termination to rainwater downpipe (NB only combined foul/rainwater drain)Key1 Condensate discharge pipe from boiler2 Pipe size transition point3 Water/weather proof insulation4 43mm 90° male/female bend5 External rain water pipe into foul water6 External air break7 Air gap8 68mm PVCu strap on fitting 9 Minimum internal diameter 19mm 10 Minimum internal diameter 30mm 11 End cut at 45°1210594837611External Termination of the Condensate PipeWhere the condensate discharge pipe is terminated over an open foul drain or gully, the pipe should terminate below the grating level, but above water level, in order to minimise “wind chill” at the open end. Pipe drainage and resistance to freezing will be improved if the termination end of the condensate pipe is cut at 45 degrees as opposed to a straight cut.The use of a drain cover (such as those used to prevent blockage by leaves) must be fitted to offer further protection from wind chill. Figure 6 (following page)shows a suitable connection method. Where the condensate drain pipe terminates in a purpose-designed soakaway (see BS 6798:2014 or boiler installation manual for soakaway design requirements) any above-ground section of condensate discharge pipe should be run and insulated as described above. Figure 7 (following page) shows a suitable connection method.Unheated Areas in BuildingsInternal condensate drainage pipes run in unheated areas such as lofts, basements and garages should be treated as external connections and insulated accordingly. Weather proof materials may not be necessary and should be assessed by the heating engineer.Use of Air Breaks In Condensate Discharge PipesInstallers should follow the manufacturer’s instructions on the use of air breaks in condensate discharge pipes. A visible air break and trap is not required if the boiler condensate trap has a minimum condensate seal of 75 mm incorporated into the boiler.Figure 6 – External drain, gully or rainwater hopperKey 1 Boiler2 Visible air break3 38mm minimum trap4 Visible air break and trap not required if there is a trap with a minimum condensate seal of 38 mm incorporated into the boiler – refer to manufacturers instructions5 External length of pipe 3 m maximum6 Open end of condensate discharge pipe direct into gully 25 mm min below grating but above water level; end cut at 45 °7 Minimum internal diameter 19 mm8 Pipe size transition point 9 Minimum internal diameter 30 mm 10 Water/weather proof insulation 11 Fit drain cover/leaf guard12105948376Manufacturers Instructions must be referred to when installing boiler condensate discharge pipes Manufacturers Instructions must be referred to when installing boiler condensate discharge pipesManufacturers Instructions must be referred to w installing boiler condensate discharge pipes Figure 7 – Example of a purpose made soakawayKey1 Condensate discharge pipe from boiler2 Ground (this section of the condensate discharge pipe may be run either above or below round level); End cut at 45°3 Diameter 100 mm minimum plastic tube4 Bottom of tube sealed5 Limestone chippings6 Two rows of three 12 mm holes at 25 mm centres, 50 mm from bottom of tube and facing away from house7 Hole depth 400 mm minimum by 300 mm diameter 8 Minimum internal diameter 19 mm 9 Pipe size transition point10 Minimum internal diameter 30 mm 11 Water/weather proof insulation11059483761101926 513777*************.ukCamden House Warwick Road Kenilworth CV8 1THOur customer information guide on frozen boiler condensatedischarge is also available for download.It includes a condensate assessment form, for engineers to complete and advice to customers during extreme cold weatherCondensing BoilerGuidance and advice for customers- endorsed by the Heating and Hotwater Industry Council, HHIC。
空调水管的制作、安装
空调水管的制作、安装1、管材使用及连接要求1）空调水管(冷冻、热水管)直径DN20-DN100采用热镀锌钢管，直径DN100以上采用无缝钢管。
2）空调冷凝水管(包括新风机组、风机盘管、分体空调器)采用PVC管。
3）风机盘管接口至关断阀之间的管道采用铜制软管，其工作压力为1.0MPa。
2、管道安装一般要求1）空调供回水立管及水平管翻高形成气囊的最高处设置排气装置，立管及水平管翻低的最低处设置排水装置，立管底部排水阀应有不小于100mm的集污管段长度。
2）空调冷凝水管应顺排水方向设置坡度安装，严禁倒坡。
空调机组（包括新风机组）冷凝水管出口处应设存水弯或其他隔气措施。
3、管道支、吊架安装1）管道的支、吊架按国标03SR417-2“装配式管道吊挂支架安装图”和95R417-1“室内热力管道支吊架”标准制作。
保冷管道与支、吊架之间应垫经防腐处理的木衬垫或高密度难燃型酚醛发泡鞍座，垫块厚度就与绝热厚度相同。
2）所有管道支吊架须符合设计规范要求，并按国家有关标准进行制作、安装，其中空调水管道支、吊架应设置隔热的硬木垫。
3）管道支吊架间距须满足下表要求：1）在某些重要设固定支架，其余均设置普通支架，各种支架形式见下图：注意事项：因楼面为预应力钢筋混凝土结构，为避免损坏钢筋，支吊架固定前要与土建施工单位配合好。
施工顺序为：能沿墙、柱敷设的尽可能沿墙面、柱面敷设。
单管支架形式普通排管吊架棚固定形式： 排管吊架梁固定形式：4、管道安装质量要求1）管道安装前必须将管内的污物清除干净，施工过程中主管上的三通孔用胶带封闭，待与支管连接时去掉封闭胶带，进行连接；2）管道切割：小管径管材采用机械切割；大管径管材采用氧气－乙炔切割，砂轮机打磨；3）管道穿墙或楼板处必须设置套管，套管直径应比管道直径大2号。
安装在墙体内的套管，其两端应与墙饰面相平；穿楼板的套管应高出建筑面层20mm （厨房、卫生间内应高出地面50mm ）。
4）管道的焊缝不得设在套管内，保温工程竣工后，套管与保温层外径之间的空隙用不燃保温材料塞紧。
空调安装：安装冷凝管
随着家用中央空调的普及，为了中央空调能够正常的使用，不管是安装人员还是用户都要掌握一点隐蔽工程安装知识，至少知道点隐蔽工程的安装细节。
第一、材料的选购，现在大部分工程公司都是采用给水U-PVC管，专用胶黏结。
其他可选用材质有：PP-R管、PP-C管和热镀锌钢管；不允许使用铝塑复合管。
第二、排水管安装准备:冷凝水管安装前，应确定其走向和标高，避免与其他管线交叉，以保证坡度顺直;管道吊架的固定卡子高度应当可以调节，并在保温外部固定。
通常可根据冷负荷的大小选择确定冷凝水管的公称直径。
第三、是管路的坡度,为了使冷凝水顺利排出室外，内机到主管道必须有1%的坡度，干管坡度不得少于0.3%，且不得出现倒坡。
这个坡度不能太大，坡度太大，后面的冷凝水管太低，影响用户的吊顶标高，如果影响了吊顶的高度，有可能就会被装修的抬高，虽然管路.上有提示标识，也不能保证装修的工人不抬高冷凝水管。
注：排水管干管的管径不宜小于32mm。
第四、防止对冲，水平排水管必须避免对冲现象，以免出现倒坡和排水不畅。
解决对冲的方法请参照下图：第五：设置通气孔，排水管最高点应设通气孔，以保证冷凝水顺利排出，排气口必须朝下，以免污物进入管道内。
第六、排水管吊架间距：具体操作方法是：首先把冷凝水管总出水口堵上，然后用水把每一个接水盘都充满水，检查水管的每一个接头是否有漏水或者渗水，如果没有渗水，四个小时以后就可以给冷凝水管保温。
第七、通水和满水试验:管道连接完成后，应做通水试验和满水试验，一方面检查排水是否畅通，另一方面检查管道系统是否漏水。
提醒:冷凝水管做完12小时已后，-定要做通水试验和满水试验,通水试验就是给每一个内机接水盘内倒入干净的水，查看冷凝水管是否能顺利排出，满水试验很多人不知道做，这个稍微有点复杂,第八、水管保温:保温材料接缝处，必须用专用胶粘接,然后缠橡塑.胶带，橡塑胶带宽度不小50mm,保证牢固，防止凝露。
因为冷凝水水温较低，流入冷凝水管之后会因为温度差在冷凝水管外壁产生凝露。
雨水管及空调冷凝水管安装技术交底
雨水管及空调冷凝水管管道安装技术交底一、施工准备（一）材料要求1、管材为硬质聚氯乙烯(UPVC)2、管材内外表层应光滑，无气泡、裂纹，管壁薄厚均匀，色泽一致。
直管段挠度不大于1%。
管件造型应规矩、光滑、无毛剌。
承口应有梢度，并与插口配套。
3、其它材料：粘结剂、圆钢、卡件、螺栓、螺母、肥皂等。
（二）主要机具吊篮、电锤、手锯、胶枪、水平尺、毛刷、棉布、线坠等。
（三）作业条件1、外墙吊篮已安装完成，并验收合格。
2、应核对各种管道的标高、排列有无矛盾。
预留孔洞已配合完成。
场地清理干净。
二、质量要求（一）主控项目1、管道的材质、规格、尺寸、粘接剂的技术性能必须符合设计要求。
2、排水塑料管必须按设计要求装伸缩节。
如设计无要求，伸缩节间距不大于4m。
检验方法：观察和尺量检查。
3、排水系统竣工后的通水试验结果，必须符合设计要求和施工规范规定。
检验方法：通水检查或检查通水试验记录。
（二）一般项目管道支(吊、托)架及管座(墩)的安装应符合以下规定：排列整齐，支架与管子接触紧密。
允许偏差项目见表：室内塑料排水管道安装的允许偏差三、工艺流程吊线→打眼→下管卡→安装管材、管件→调直、固定四、施工工艺1、预制加工：根据图纸要求并结合实际情况，按预留口位置测量尺寸，进行断管。
断口要平齐。
粘结前用棉布将承插口需粘结部位的水分、灰尘擦拭干净。
用毛刷涂抹粘结剂，先涂抹承口后涂抹插口，随即用力垂直插入，插入粘结时将插口稍作转动，以利粘结剂分布均匀，约30秒至一分钟即可粘结牢固。
粘牢后立即将溢出的粘结剂擦拭干净。
多口粘连时应注意预留口方向。
2、安装：根据图纸要求从上至下吊通线，雨水管用Φ110硬质聚氯乙烯(UPVC)，要求管外壁距墙2.5—3mm，用电锤在外墙上打眼，然后将洞内粉尘吹净，将管卡打入洞内固定牢固，雨水管与雨水斗粘接后紧贴铁制雨水口下沿，雨水管安装不加伸缩节。
3、空调板处立管每层居中打一个管卡，每层混凝土板处做吊洞处理。
4、空调冷凝水管用Φ50硬质聚氯乙烯(UPVC)管，在冷凝水立管上距空调板200mm使用Φ50斜三通做为空调冷凝水接口。