Electrical duct heater 4 – 20 mA 電氣管道加熱器20 – 4毫安

Characteristics
特點(diǎn)
Power source:
電源：
electrical
電
Description
描述
A job specification can be prepared by using the following information. Simply darken the applicable circles. Material which is part of the basic specification has already been darkened. Additional copies of this specification guide are available from your local Heatrex representative.
可以使用以下信息來(lái)編寫(xiě)工作規(guī)范。簡(jiǎn)單地將適用的界。材料是基本規(guī)格的一部分，已經(jīng)被黑暗了。本規(guī)范指南額外的副本可從您當(dāng)?shù)氐膆eatrex代表。
Duct heaters shall be Heatrex:
管道加熱器應(yīng)heatrex：
Type HUA Custom Slip-in Heater
在加熱爐中鍵入“華定制”
Type HUP Custom Flanged Heater
該自定義類(lèi)型法蘭加熱器
Approvals – Heaters and panelboards (if required) shall meet the requirements of the National Electrical Code and shall be listed by Underwriters Laboratories for zero clearance to combustible surfaces and for use with heat pumps and air conditioning equipment.
批準(zhǔn)-加熱器和配電盤(pán)（如果需要）應(yīng)符合國(guó)家電氣規(guī)范的要求，應(yīng)當(dāng)由保險(xiǎn)商實(shí)驗(yàn)室列為零間隙可燃表面和用于熱泵和空調(diào)設(shè)備。
Heating elements shall be open coil, 80 nickel, 20 chromium, Grade A resistance wire. Type C alloys containing iron or other alloys are not acceptable. Coils shall be machine crimped into stainless steel terminals extending at least 1″ into the airstream and all terminal hardware shall be stainless steel. Coils shall be supported by ceramic bushings staked into supporting brackets.
加熱元件應(yīng)為開(kāi)路線圈，80鎳，20鉻，級(jí)電阻絲。含鐵或其他合金的含鐵合金是不可接受的。線圈應(yīng)機(jī)卷曲成不銹鋼終端延伸至少1”進(jìn)入氣流和所有終端硬件將不銹鋼。線圈由陶瓷套管押到支架支撐。
Heater frames and terminal boxes shall be corrosion resistant steel. Unless otherwise indicated, the terminal box shall be NEMA 1 construction and shall be provided with a hinged, latching cover and multiple concentric knockouts for field wiring.
加熱器和接線盒應(yīng)為耐腐蝕鋼。除非另有說(shuō)明，接線盒應(yīng)符合NEMA 1建筑應(yīng)設(shè)置鉸接，保持現(xiàn)場(chǎng)接線蓋和多個(gè)同心擊倒。

Electrical duct heater 4 – 20 mA 電氣管道加熱器20 – 4毫安